Team:Freiburg Bioware/NoteBook/Labjournal/October

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Revision as of 20:49, 9 October 2010 (view source) Bea (Talk | contribs) (→Site-directed mutagenesis of pSB1C3_phtert_mgmk_tk30) ← Older edit		Revision as of 20:53, 9 October 2010 (view source) Bea (Talk | contribs) (→Cellculture) Newer edit →
Line 1,809:		Line 1,809:
	Investigator Patrick <br>		Investigator Patrick <br>
-	Transduction of HT1080 and A431. Yesterday 3 6-well plates of HT1080 and A431 were seeded with 200.000 cells into each well. The transductions were performed with the following AAV2s:	+	Transduction of HT1080 and A431. Yesterday 3 6-well plates of HT1080 and A431 were seeded with 200.000 cells into each well. The transductions were performed with the following AAV2s [[Image: Mistake.png|thumb|right|100px|Nothing to complain about, but to compliment on this nice wiki entry! well done pat! ;-)
	* mVenus without beta-globin		* mVenus without beta-globin
	* mVenus without HGH		* mVenus without HGH

---

Revision as of 20:53, 9 October 2010

Team:Freiburg Bioware/SubNoteBook

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• March (labday 1)
• April (labday 2 - 5)
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• August part 2 (labday 93 - 106)
• September part 1 (labday 107 - 123)
• September part 2 (labday 124 - 135)
• October part 1 (labday 136 - 145 )
• October part 2 (labday 146 - 155 )
• October part 3 (labday 156 - 166 )
• November (labday 167 - 170 )
• Cellculture

Contents 1 136. labday 01.10.2010 1.1 Test Digestions of yesterdays minipreps 1.2 mini preps of CD clones 1.3 test digestion of CD clones 1.4 Biobrick assembly pSB1C3_lITR_hTERT_beta-globin_CD 1.5 Sequencing results of pCerulean_Zegfr:1907_MiddleLinker_VP2/3_HSPG-KO 1.6 Picking clones of pGA14_MiddleLinker_VP2/3_insCap and pGA14_MiddleLinker_VP2/3_HSPG-KO 1.7 Sequencing results of pSB1C3_001_VP2/3_587-KO_BAP and pSB1C3_001_VP2/3_587-KO_6xHis 1.8 Impressions of transfection of AAV293 with pCerulean_VP1up_NLS_mVenus_VP2/3 1.9 Cloning of hGH_rITR into pSB1C3_lITR_phTERT_beta-globin_CFP and lITR_phTERT_beta-globin_mGMK_TK30 into pSB1C3_hGH_rITR 1.10 New BL21 cells ready to use! 2 137. labday 02.10.2010 2.1 Repetition of the approach of subcloning the ViralBricks HSPG-ko BAP and His into VP2/3 with different strategies 2.2 BioBrick Assembly of CD and mCherry 2.3 Mini Prep and test digestion of pGa14_MiddleLinker_VP2/3_HSPG-KO 2.4 Sequencing analysis of HSPG-ko in several IRCK constructs 2.5 Mini Prep of pGa14_MiddleLinker_VP2/3_inscap and pSB1C3_Darpin 2.6 Test digestion of pGA14_MiddleLinker_VP2/3_inscap 2.7 Mass Midi-Prep III 2.8 Analysis of viral harvest via spectrometer 2.9 200µl-Transduction for testing the pTERT-promoter 2.10 Transfection 3 138. labday 03.10.2010 3.1 Proceeding with the approach of subcloning the ViralBricks HSPG-ko BAP and His into VP2/3 with different strategies 3.2 Midi-Prep of pSB1C3_lITR_CMV_betaglobin_mVenus_hGH_rITR clone1 4 139. labday 04.10.2010 4.1 Three fragment ligation: pSB1C3_001_CMV_VP1up_NLS_Targeting_HSPG-KO_VP2/3 4.2 ´Seeding AAV293 for Transfection 4.3 FACS Analysis of pTERT_mVenus-loaded-viral particles and pCerulean_VP1up_His_VP2/3 4.3.1 Assembly of pSB1C3_CMV_DARPin_VP2/3_insCap and pSB1C3_CMV_DARPin_VP2/3_HSPG-KO 4.4 Miniprep of serveral constructs 5 140. labday 05.10.2010 5.1 Site-directed mutagenesis in pSB1C3_mGMK_TK30 construct 5.2 Cellculture: Bad news 5.3 Repetition of pCerulean_VP1up_NLS_DARPin 5.4 Harvest of viral stocks 5.5 Repetition of Cloning lITR_phTERT_beta-globin_mGMK_TK30 into pSB1C3_hGH_rITR 5.6 Seeding HT1080 and AAV431 for transduction 5.7 Cloning of pSB1C3_lITR_phTERT_beta-globin_CD and pSB1C3_lITR_CMV_beta-globin_CD 5.8 Repetition of the test-digestion of p714,p715,p719,p720,p721,p724 and p726 5.9 Repetition: Cloning of VP2/3_BAP_HSPG-KO and VP2/3_His_HSPG-KO into pCerulean_Zegfr:1907_Middlelinker and VP2/3_His_HSPG-KO into pCerulean_VP1up_NLS_mVenus 5.10 PCR of VP1-3 6 141. labday 06.10.2010 6.1 Cellculture 6.2 Transduction of HT1080 and A431 cells 6.3 Sequence analysis of pSB1C3_CD 6.4 Site-directed mutagenesis of pSB1C3_CD 6.5 Sequencing analysis 6.6 Test Digestion of pSB1C3_CMV_DARPin_MiddleLinker_VP2/3_insCap and pSB1C3_CMV_DARPin_MiddleLinker_VP2/3_HSPG-KO 6.7 Repetition: Cloning of CFP into pSB1C3_lITR_phTERT_beta-globin and hgH_rITR into pSB1C3_lITR_CMV_beta-globin_mCherry and into pSB1C3_lITR_phTERT_beta-globin_mCherry 6.8 Biotinylation of the monoclonal IgG antibody A20 6.9 Repetition of VP1-3 PCR 6.10 Cloning of Rep into Rep52 and Rep78 7 142. labday 07.10.2010 7.1 DARPin VP2 Fusion: Sequencing results 7.2 Repetition of cloning of ordered Rep into Rep78 7.3 Transformation of VP1-3 & pSB1C3_001 and p190 &Rep52 8 143. labday 08.10.2010 8.1 Mini-Prep and test digestion of several constructs 8.2 Test-PCR of pSB1C3_lITR_phTERT_beta-globin_mGMK_TK30_hgH_rITR 8.3 Trafo evaluation of VP1-3 and Rep52 constructs 8.4 Repetiton: Site-directed mutagenesis in pSB1C3_mGMK_TK30 construct 9 144. labday 09.10.2010 9.1 Mini-Prep of pSB1C3_CD_SDM-PstI 9.2 Preparation of competent cells and Test-Trafo 9.3 Test PCR of qPCR primer for phTERT 9.4 Cloning of p40 in front of VP123 9.5 Site-directed mutagenesis of pSB1C3_phtert_mgmk_tk30 9.6 Cloning HSPG-KO_empty into pSB1C3-001_pCMV_[AAV2]VP123_453_RGD and pSB1C3-001_pCMV_[AAV2]VP123_453_Z34C 9.7 Cellculture 10 145. labday 10.10.2010

136. labday 01.10.2010

Test Digestions of yesterdays minipreps

Investigator: Achim, Anna

• 001_CMV: Cut with EcoRI, PstI & PvuII
  • P654 (Lane 1)
  • P655 (Lane 2)
  • P686 (Lane 3)
  • Control P320 (Lane 4)

• CMV_ZEGFR:1907_VP2/3_inscap: Cut with EcoRI & SspI
  • P678 (Lane 5)
  • P679 (Lane 6)
  • Control P514 (Lane 7)
    • Results:The expected bands should run at 1700 and 3000 bp. P679 was sent for sequencing.

• CMV_ZEGFR:1907_VP2/3_inscap_HSPG-KO: Cut with EcoRI & SspI
  • P680 (Lane 8)
  • P681 (Lane 9)
  • P684 (Lane 10)
  • P685 (Lane 11)
  • Control P613 (Lane 12)
    • Results:The expected bands should run at 1700 and 3000 bp. P684 was sent for sequencing.

• pCerulean_Vp1up_NLS_Darpin: Cut with BamHI & XbaI
  • P676 (Lane 13)
  • P677 (Lane 14)
  • P683 (Lane 15)
  • Control P365 (Lane 20)
    • Results:The expected bands should run at 500 and 4500 bp. However, just one band at ~3000 bp is visible on the gel.

Samples Stefan: Cut with Xba & Spe

• • P670 (Lane 16)
  • P671 (Lane 17)
  • P672 (Lane 18)
  • P673 (Lane 19)

I guess that the pSB1C3_001_CMV did NOT work since the control with BLA looks nearly the same. We should repeat the experiment by cloning the CMV promoter into another vector. I would recommend it because we have a lot of constructs which we should fuse to the CMV promoter and in order to avoid the three-fragment ligation.

mini preps of CD clones

Investigator: Kira

c(p689)= 115 ng/ul
c(690)= 151, 20 ng/ul
c(691)= 122,27 ng/ul
c(p692) = 126,42 ng/ul

test digestion of CD clones

Investigator: Kira

Components	sample Volume/µL
DNA	4,0 µl
BSA (10x)	2 µl
Buffer no. 4	2,0 µl
Enzyme 1 XbaI	1,0 µl
Enzyme 2 AgeI	1,5 µl
H2O	9,5 µl
Total volume	20

incubation @ 37 C for approx. 2 h

1% agarose gel

Biobrick assembly pSB1C3_lITR_hTERT_beta-globin_CD

Investigator: Kira

c(pSB1C3_lITR_hTERT_beta-globin)= 333 ng/ul
c(pSB1C3_CD)= 151 ng/ul

Components	vector Volume/µL	insert Volume/µL
DNA	4,5 µl	6
BSA (10x)	3 µl	3
Buffer no. 4	3,0 µl	3
Enzyme 1 XbaI	0 µl	1,5
Enzyme 2 SpeI	1,5 µl	0
Enzyme 3 PstI-HF	1,0	1
H2O	17	15,5
Total volume	25

incubation @ 37 C for approx. 2 h

1% agarose gel

Ligation

DNA-mix: 8 ul (vector 4,6ul)+(insert 3,4 ul)
T4 ligase: 1 ul
T4 buffer: 1 ul
Incubation @ RT for 30 min

Transformation was performed according to the standard protocol w BL21 cells.

Sequencing results of pCerulean_Zegfr:1907_MiddleLinker_VP2/3_HSPG-KO

Investigator: Hanna

Comment: All N-terminal fusion approaches with VP2/3_HSPG-KO revealed positive results except of pCerulean_Zegfr:1907_MiddleLinker_VP2/3_HSPG-KO. Another clone was picked, preped, test digested and sent for sequencing.

Conclusion: Sequencing results revealed positive results.

Picking clones of pGA14_MiddleLinker_VP2/3_insCap and pGA14_MiddleLinker_VP2/3_HSPG-KO

Investigator: Hanna

Unfortunately there grew a bacteria lawn over night - it was hardly not possible to pick clones. Nevertheless I tried and picked 2 clones of pGA14_MiddleLinker_VP2/3_insCap and pGA14_MiddleLinker_VP2/3_HSPG-KO.
To do: Mini-Prep and test digestion.

Sequencing results of pSB1C3_001_VP2/3_587-KO_BAP and pSB1C3_001_VP2/3_587-KO_6xHis

Investigator: Hanna

Comment: For the creation of our super constructs, the His-Tag and the BAP motif need to be cloned into VP2/3 for N-terminal fusion to VP2. Sequencing results showed that the 6xHis and BAP motif was not cloned into VP2/3_insCap.

Sample gallery

To do: Clone 587-KO_6xHis and 587-KO_BAP into pSB1C3_001_VP2/3_insCap 1. via digestion of inserts and 2. via hybridization of referring oligos - digestion of vector with 800-900 ng.

Impressions of transfection of AAV293 with pCerulean_VP1up_NLS_mVenus_VP2/3

Investigator: Adrian

Yesterday AAV293 cells were transfected with pCerulean_VP1up_NLS_mVenus_VP2/3 and GMK-TK30 as gene of interest. Today, nuclear localization of the produced mVenus_VP2/3 fusion protein was visible and can be nicely seen in the following pictures:

Conclusion: The VP2/3 fusion particle was transcribed and translated AND was transported back into the nucleus in order to be packaged by the ITR-flanked gene of interest.

Cloning of hGH_rITR into pSB1C3_lITR_phTERT_beta-globin_CFP and lITR_phTERT_beta-globin_mGMK_TK30 into pSB1C3_hGH_rITR

Investigator: Stefan

Vector name:

• pSB1C3_lITR_phTERT_beta-globin_CFP (P682)
• pSB1C3_hGH_rITR (P186)

Insert name:

• pSB1C3_hGH_rITR (P186)
• pSB1C3_lITR_phTERT_beta-globin_mGMK_TK30 (P672)
• pSB1C3_lITR_phTERT_beta-globin_mGMK_TK30 (P673)

components	volume for P186 /µl	volume of P186 X+E /µl	volume of P672 + P673 /µl	volume of P682 /µl
DNA	12	12	5	14
BSA (10x)	2,5	2	2	2
Buffer 4 (10x)	3	2	2	2
Enzyme XbaI	1	1	-	-
Enzyme PstI	1	-	-	1
Enzyme EcoI	-	1	1	-
Enzyme SpeI	-	-	1	1
H2O	6	6	9	-
Total volume (e.g. 15,20,25,30 µl)	25	25	20	20

Gel:
0,5 g Agarose, 50 ml TAE (1%), 3 µl GELRED , at 115 Volt

Comment: Since the first gel revealed problems with samples 672, 673 and 682 another digestion was prepared (same approach as shown above), this time using a 0,8% gel and another loading dye (without SDS).

0,4 g Agarose, 50 ml TAE (0,8%), 3 µl GELRED , at 115 Volt

Comment: Since sample 672 showed no bands this sample was discarded and cloning continued only using 673.

Gel extraction:
Was performed according to protocol.

T4 Ligation:
Ligation was performed over night.

ligation name	186 (X+E) + 673	186 + 682
volume of vector	3,51	4,49
volume of insert	5,38	2,64

Transformation:
Will be done tomorrow using BL21 cells.

New BL21 cells ready to use!

Investigator: Stefan

137. labday 02.10.2010

Repetition of the approach of subcloning the ViralBricks HSPG-ko BAP and His into VP2/3 with different strategies

Investigator: Bea

Comment: Unfortunately, the last experiment revealed that subcloning of the two ViralBricks did not work out which was shown by the sequencing results. Therefore we need to repeat the approach of subcloning the ViralBricks into the pSB1C3_VP2/3 which than can be used for fusing it to the n-terminal targeting approaches. Two different strategies will be carried out which means that we are digesting the pSB1C3_Viralbricks AND hybridize the oligos (BAP and His) in order to obtain some positive results.

The vector and ViralBricks were digested with BamHi and PvuII. The vector was dephosphorylated following the standard protocol. The vector was loaded on a 1% agarose gel before dephosphorylation was conducted. The results can be seen above in the gel picture:

Result:

The ligation was performed over night at 18°C with T4-ligase.

BioBrick Assembly of CD and mCherry

Investigator: Bea

Comment: We decided to choose some additional GOI´s for the vectorplasmid so the "new" GOI´s need to be fused to the leftITR_Promoter_betaglobin constructs. Since only one clone grew on the plate prepared by Kira where she fused the CD (cytosine deaminase) to the above mentioned construct I am going to repeat it aswell.

Digestion of the constructs:

• P689 = pSB1C3_CD
• P626 = iGEM_mCherry
• P434 = pSB1C3_leftITR_CMV_betaglobin
• P434 = pSB1C3_leftITR_phTERT_betaglobin
• P525 = pSB1C3_VP2/capins

Loading plan:

P689 (pSB1C3_CD)     P626 (iGEM mCherry)     P434 (pSB1C3_lITR_CMV_ß-globin)     P437 (pSB1C3_lITR_phTERT_ß-globin)

Results:

After gel extraction has been performed, the ligation was carried out.

Ligation:

The ligation mix was transformed into XL1-Blue cells and plated on agar plates containing chloramphenicol.

Next steps:
Picking clones and perform Mini-Prep. After the Mini-Preps have been performed this construct needs to be sequenced and tested in cell culture.

comment: just one clone? uhhhh, when did you take out the plate? i put it at around 1 am..maybe they need a while to grow, no? (Kira)
Yep, I found another clone ;-) But the two look pretty good. I took them out today in the afternoon - I guess that is enough time! But if you want I can put them back into the 37° C room??! (Bea)

Mini Prep and test digestion of pGa14_MiddleLinker_VP2/3_HSPG-KO

Investigator: Hanna
Comment: In order to fuse the DARPin to the N-terminus of VP2/3_insCap and VP2/3_HSPG-KO, these motifs need to be fused to the Middle Linker (performed on 30.9.2010). In order to be able to immediately continue with cloning, BL21 cells were transformed and clones were picked in the noon. Now, the DNA needs to be preped and test digested in order to perform a 3-fragment-ligation with the DARPin and the pSB1C3_001_CMV plasmid. Unfortunately the cells of the VP2/3_insCap construct grew not densely enough. Therefore two new clones were picked from the plate and were inoculated in 10 mL LB medium. The other construct (pGa14_MiddleLinker_VP2/3_HSPG-KO) was preped and test digested.

TEST DIGESTION: For both clones:

• DNA: 4 µL
• Buffer 4: 1 µL
• BSA: 1 µL
• EcoRI: 0.5 µL
• PstI: 0.5 µL
• H2O: 3 µL

Incubation: 1 hour.
Agarose gel: 0.8 %, 115 Volt, 1 hour.
Comment: The choice of these restriction enzymes was not clever, because if cloning didn't work, I expect one band at 2379 bp (the insert should hardly be seen) - if it worked one band at 2379 bp and a second at 2005 bp. Fortunately the bands could be separated ans revealed positive results for both clones :


Next steps:

• Mini-Prep and test digestion of pGa14_MiddleLinker_VP2/3_ins Cap.
• 3 fragment ligation of MiddleLinker_VP2/3_ins Cap or MiddleLinker_VP2/3_HSPG-KO + DARPin + pSB1C3_001_CMV backbone.

Sequencing analysis of HSPG-ko in several IRCK constructs

Investigator: Stefan

pSB1C3_001_RC_IRCK_HSPG-ko_P5tataless_RFC10 clone 1 (P687):

pSB1C3_001_RC_IRCK_HSPG-ko_P5tataless_RFC10 clone 2(P688):

pSB1C3_001_RC_IRCK_VP1-ko_HSPG-ko_P5tataless cl1 (P644):

pSB1C3_001_RC_IRCK_VP2-ko_HSPG-ko_P5tataless cl1 (P646):

Comment: Sequencing results show that all plasmids contain the HSGP-ko. Working will be continued using P644, P646 and P687.

Mini Prep of pGa14_MiddleLinker_VP2/3_inscap and pSB1C3_Darpin

Investigator: Jessica

• pSB1C3_Darpin clone1 c=158.5 ng/µl
• pSB1C3_Darpin clone2 c=205.6 ng/µl
• pGA14_MiddleLinker_VP2/3_inscap clone 1 c=147.5 ng/µl
• pGA14_MiddleLinker_VP2/3_inscap clone 2 c=121.0 ng/µl

Test-digestion:

Components	pSB1C3_Darpin clone1/2
DNA	1,5 µl
BSA (10x)	1 µl
Buffer no. 4	1 µl
Enzyme 1 XbaI	0,4 µl
Enzyme 2 AgeI	0,4 µl
H2O	5,7 µl
Total volume	10

Hanna wrote that a 3rd enzyme is need for the test digestion of pGA14_MiddleLinker_VP2/3_inscap but I couln't find any sequence of pGA14_MiddleLinker_VP2/3_inscap or pGA14

You can either find these constructs in my workingfolder "DARPin" or the pGA14_MiddleLinker in the "Linker-Folder" and the VP2/3_insCap in many workingfolders!!!! You could have also digest the construct with EcoRI and SpeI... then you would expect a 2 and a 2.3 kb fragment... menas: you have to run the gel at least 1 hour - but it works (see the previous test digestion of the MiddleLinker_VP2/3_insCap construct!!!!).

Test digestion of pGA14_MiddleLinker_VP2/3_inscap

Investigator: Achim

• pGA14_MiddleLinker_VP2/3_inscap clone 1 c=147.5 ng/µl (P698)
• pGA14_MiddleLinker_VP2/3_inscap clone 2 c=121.0 ng/µl (P699)
• Control: pGA14_MiddleLinker (P301)

• Digestion with EcoRI & SalI; should yield two bands of 3400 & 1000 bp. The negative control should only be cut once.

Both samples show correctly sized bands. The negative control ran further than expected, it should be located at 4500 bp.

Mass Midi-Prep III

Investigator: Chris W.

Midi-Prep of:

pSB1C3_001_RC_IRCK_VP1-ko_HSPG-ko_P5tataless cl1 =P700 =B521
pSB1C3_001_RC_IRCK_VP2-ko_HSPG-ko_P5tataless cl1 =P701 =B523
pSB1C3_001_RC_IRCK_HSPG-ko_P5tataless_RFC10 clone 1 =P702 =B561
pCerulean_ZEGFR:1907_MiddleLinker_VP2/3_HSPG-KO clone 2 =P703 =B543
pCerulean_CFP_MiddleLinker_VP2/3_HSPG-KO =P704 =B507
pCerulean_ZEGFR:1907_SEG_VP2/3_HSPG-KO =P705 =B509
pCerulean_ZEGFR:1907_ShortLinker_VP2/3_HSPG-KO =P706 =B510
pCerulean_ZEGFR:1907_LongLinker_VP2/3_HSPG-KO =P707 =B511
pCerulean_6xHis_MiddleLinker_VP2/3_HSPG-KO =P708 =B512
pCerulean_VP1up_NLS_ZEGFR:1907_VP2/3_HSPG-KO =P709 =B513
pCerulean_VP1up_NLS_6xHis_VP2/3_HSPG-KO =P710 =B514
pCerulean_VP1up_NLS_mVenus_VP2/3_HSPG-KO =P711 =B515
pSB1C3_001_RC_IRCK_P5tataless clone 1 =P712 =B516

The Midi-Preps were performed according to the standard protocol yielding the following concentrations:

plasmid-no.	P700	P701	P702	P703	P704	P705	P706	P707	P708	P709	P710	P711	P712
concentration (ng/µl)	695	370	601	1548	3996	3630	2460	2610	1860	2913	2964	3030	1200

Analysis of viral harvest via spectrometer

Investigator: Adrian, Patrick

The motivation: We want to figure out if it is possible to purify our viral stocks via centrifugation with 10.000 g and/or 20.000 g. In theory/ according to the literature the viral particles should be in the cells and attached to the HSPGs at the cellular surfaces.
The plan: Two different viral stocks were prepared:

Stock 1 with VP2-mVenus-fusion-Capsid loaded with TKGMK (4 wells from a 6 well plate)

• R/C 1: 50% pCerulean_VP1up_NLS_mVenus_Vp2/3 P501
• R/C 2: 50% Rep/Cap2: P449 pAAV_RC_4fachmut_VP1-ko:
• GOI: TKGMK: P82.b
• pHelper

Stock 2 "standard" virus (4 wells from a 6 well plate)

• R/C 1 P486
• GOI: TKGMK: P82.b
• pHelper

These two stocks got harvested according to standard protocol (scratching cells, transfer them in to 15 ml falcons, resuling 12ml solution total). After centrifugation (10 min 200g), the supernatant got transferred into two new 15 ml falcons and the pellets were resuspended with 10 ml DMEM Medium. The Stocks got freezed thawed two times so finally there were:

1. DMEM as negative control
2. resuspended Pellet with mVenus-fusioned viral capsids
3. resuspended Pellet with "standard virus"
4. supernatant with mVenus-fusioned viral capsids
5. supernatant with "standard virus"

The fluorescence of each stock was measured via spectrometer. After that, stocks 2 and 4 were centrifugated 10min with 10.000 g followed by an other fluorescence measuring. Finally the stocks got spin down with 20.000 g for 10 min
The results:

The conclusions: The highest amount of fluorescence was measured in the supernatant, the individual centrifugation steps had no decrease in fluorescence as consequence!

Keep in mind, without further investigation it is not valid to say that we can purify our stocks via 10-20.000 g centrifugation steps, because we dont know if the viral capsids are still intact! The FACS analysis are not sufficient enough to make a decision, because our last samples had YFP as GOI (=> so efficient cell sorting was not possible). We need to do qPCRs to make a valid evidence.

200µl-Transduction for testing the pTERT-promoter

Investigator: Adrian, Patrick
We transduced A431, HT1080 and AAV293 cells with 4 different viral stocks:

1. control vector from 15.9, 750.000 cells, 3.3 µg approach
2. P25 R/C= 326 pTERT_mVenus
3. P26 pAAV_RC_RepCapIns_SDMKpnI clone 1 P431 pTERT_mVenus
4. His-linker-fusion

CRUCIAL: There was not enough viral stock: so the whole Transduction was performed with 200µl instead of 1000µl

There are 45 samples to FACS on monday 4.10. Tripple values for each stock of each cell lines.

Transfection

Investigators: Adrian, Patrick
Transfection followed standard protocol (3.3 µg of each plasmid, 1 ml 0.3M CaCl₂ and 1 ml of 2xHBS buffer PH 11.12) but with 20 min incubation time (Ca-DNA-2xHBS)
following stocks:

• mVenus standard stock 10 x cm R/C: P468² plates
• TKGMK stock 10 x cm² plates R/C: P468
• viral particles with GOI (mVenus) missing HGH one 6well plate
• viral particles with GOI (mVenus) missing beta globin one 6well plate
• viral particles with R/C missing HSPG binding motif (P687) one 6well plate
• viral particles with new standard R/C (P668) one 6well plate

138. labday 03.10.2010

Proceeding with the approach of subcloning the ViralBricks HSPG-ko BAP and His into VP2/3 with different strategies

Investigator: Bea

Comment: Ligation was carried out over night and transformation will be performed today.

Since the digested vector was not sufficient for all four ligation I decided to perform the ligation only with the hybridized oligos 587-ko His and the digested Viralbricks 587-HSPG-ko His and BAP. If the digested BAP insert reverals no positive results, the hybrizied oligos for BAP can be used for another approach. The transformation was carried out in

• BL-21 cells
• and plated on agar plastes containing chloramphenicol

Midi-Prep of pSB1C3_lITR_CMV_betaglobin_mVenus_hGH_rITR clone1

Investigator: Chris W.

Midi-Preps of pSB1C3_lITR_CMV_betaglobin_mVenus_hGH_rITR clone1 =P713 =B200

The Midi-Prep were performed according to the standard protocol yielding the following concentrations:

139. labday 04.10.2010

Three fragment ligation: pSB1C3_001_CMV_VP1up_NLS_Targeting_HSPG-KO_VP2/3

Investigator: Achim

Four ligations in total:

• Cloning CMV & VP1up_NLS_mVenus_HSPG-KO_VP2/3 into pSB1C3_001
• Cloning CMV & VP1up_NLS_His_HSPG-KO_VP2/3 into pSB1C3_001
• Cloning CMV & VP1up_NLS_affibody_HSPG-KO_VP2/3 into pSB1C3_001
• Cloning CMV into pSB1C3_001

Used plasmids:

• pSB1C3_CMV (P145)
  • c=225.5 ng/µl -> 8 µl
  • Cut with EcoRI & SpeI
• pCerulean_VP1up_NLS_mVenus_HSPG-KO_VP2/3 (P711)
  • c=3030 ng/µl -> 0.7 µl
  • Cut with XbaI & PstI
• pCerulean_VP1up_NLS_His_HSPG-KO_VP2/3 (P710)
  • c=2965 ng/µl -> 0.7 µl
  • Cut with XbaI & PstI
• pCerulean_VP1up_NLS_affibody_HSPG-KO_VP2/3 (P709)
  • c=2913 ng/µl -> 0.7 µl
  • Cut with XbaI & PstI
• pSB1C3_001_BLA (P320)
  • c=408.5 ng/µl -> 5 µl
  • Cut with EcoRI & PstI for three fragment ligations
  • Cut with EcoRI & SpeI for ligation with CMV

´Seeding AAV293 for Transfection

Investigator: Patrick

9 6-well plates were prepared for the transfection tomorrow. 480000 cells were seeded into each well.

FACS Analysis of pTERT_mVenus-loaded-viral particles and pCerulean_VP1up_His_VP2/3

Investigators: Kerstin, Anissa

45 samples of the three cell lines: AAV293, A431 and HT1080 got transduced (see 2.10) with following viral stocks:

1.

• pHelper
• R/C : 326
• pTERT-mVenus

2.

• pHelper
• R/C : P431
• pTERT-mVenus

3.

• pHelper
• R/C P158a
• CMV_mVenus

4.

• pHelper
• R/C: pCerulean_VP1up_His_VP2/3
• pAAV_RC_4fachmut_VP1-ko
• CMV_mVenus

Assembly of pSB1C3_CMV_DARPin_VP2/3_insCap and pSB1C3_CMV_DARPin_VP2/3_HSPG-KO

Investigators: Hanna

Comment: We also want to test the DARPin_E01 for the N-terminal fusion approaches. Today a 3 fragment ligation will be performed in order to complete the VP2 fusion constructs with the DARPin.
Because 2 test digestions showed that the fusion of the DARPin to VP1up_NLS didn't work as ecpected (insert is too large) this has to be repeated before also the VP1 insertion with the DARPin can be completed.

Digestion

• Incubation: 2.5 h

Agarose-Gel:

0.5 g Agarose, 50 mL TAE (1 %), 3 µL GELRED, at 115 Volt, running time: 45 minutes

Gelex

• CMV: 48.99 ng/µL
• MiddleLinker_VP2/3_insCap: 12.95 ng/µL
• MiddleLinker_VP2/3_HSPG-KO ng/µL
• DARPin: 9.59 ng/µL

Ligation

Trafo

Was performed following the standard protocol.
Cells: XL1b

Miniprep of serveral constructs

Investigator: Stefan

Glycerol stocks were prepared:
B573 pSB1C3_lITR_CMV_betaglobin_mCherry clone1
B574 pSB1C3_lITR_CMV_betaglobin_mCherry clone2
B575 pSB1C3_lITR_CMV_betaglobin_CD clone1
B576 pSB1C3_lITR_CMV_betaglobin_CD clone2
B577 pSB1C3_lITR_phTERT_betaglobin_mCherry clone1
B578 pSB1C3_lITR_phTERT_betaglobin_mCherry clone2
B579 pSB1C3_lITR_phTERT_betaglobin_CFP_hgH_rITR clone 1
B580 pSB1C3_lITR_phTERT_betaglobin_CFP_hgH_rITR clone 2
B581 pSB1C3_lITR_phTERT_betaglobin_CFP_hgH_rITR clone 1
B582 pSB1C3_lITR_phTERT_betaglobin_CFP_hgH_rITR clone 2
B583 pSB1C3_lITR_phTERT_betaglobin_CD clone 1
B584 pSB1C3_lITR_phTERT_betaglobin_CD clone 2
B585 pSB1C3_lITR_phTERT_betaglobin_CD clone 3
B586 pSB1C3_001_VP2/3_capins_587_KO_His_clone1
B587 pSB1C3_001_VP2/3_capins_587_KO_His_clone2
B588 pSB1C3_001_VP2/3_capins_587_KO_His_clone3
B589 pSB1C3_001_VP2/3_capins_587_KO_His_oligo_clone1
B590 pSB1C3_001_VP2/3_capins_587_KO_His_oligo_clone2
B591 pSB1C3_001_VP2/3_capins_587_KO_His_oligo_clone3
B592 pSB1C3_001_VP2/3_capins_587_KO_Bap_clone1
B593 pSB1C3_001_VP2/3_capins_587_KO_Bap_clone2
B594 pSB1C3_001_VP2/3_capins_587_KO_Bap_clone3

Mini-Prep was performed according to the standard protocol

P714 pSB1C3_lITR_CMV_betaglobin_mCherry clone1 c = 89,3 ng/µl
P715 pSB1C3_lITR_CMV_betaglobin_mCherry clone2 c = 312,4 ng/µl
P716 pSB1C3_lITR_CMV_betaglobin_CD clone1 c = 254,4 ng/µl
P717 pSB1C3_lITR_CMV_betaglobin_CD clone2 c = 314,8 ng/µl
P718 pSB1C3_lITR_phTERT_betaglobin_mCherry clone1 c = 409,8 ng/µl
P719 pSB1C3_lITR_phTERT_betaglobin_mCherry clone2 c = 322,1 ng/µl
P720 pSB1C3_lITR_phTERT_betaglobin_CFP_hgH_rITR clone 1 c = 265,1 ng/µl
P721 pSB1C3_lITR_phTERT_betaglobin_CFP_hgH_rITR clone 2 c = 238,8 ng/µl
P722 pSB1C3_lITR_phTERT_betaglobin_mGMK_TK30_hgH_rITR clone 1 c = 145,9 ng/µl
P723 pSB1C3_lITR_phTERT_betaglobin_mGMK_TK30_hgH_rITR clone 2 c = 100,5 ng/µl
P724 pSB1C3_lITR_phTERT_betaglobin_CD clone 1 c = 176,9 ng/µl
P725 pSB1C3_lITR_phTERT_betaglobin_CD clone 2 c = 165,0 ng/µl
P726 pSB1C3_lITR_phTERT_betaglobin_CD clone 3 c = 149,0 ng/µl
P727 pSB1C3_CMV c = 225,5 ng/µl
P728 pSB1C3_hGH_rITR c = 129,6 ng/µl
P729 pSB1C3_leftITR_CMV_beta-globin c = 243,4 ng/µl
P730 pSB1C3_leftITR_hTERT_beta-globin c = 81,8 ng/µl
P731 pSB1C3_001_VP2/3_insCap c = 466,1 ng/µl
P732 pSB1C3_001_VP2/3_capins_587_KO_His_clone1 c = 107,6 ng/µl
P733 pSB1C3_001_VP2/3_capins_587_KO_His_clone2 c = 110,3 ng/µl
P734 pSB1C3_001_VP2/3_capins_587_KO_His_clone3 c = 121,7 ng/µl
P735 pSB1C3_001_VP2/3_capins_587_KO_His_oligo_clone1 c = 101,0 ng/µl P736 pSB1C3_001_VP2/3_capins_587_KO_His_oligo_clone2 c = 101,6 ng/µl
P737 pSB1C3_001_VP2/3_capins_587_KO_His_oligo_clone3 c = 87,0 ng/µl
P738 pSB1C3_001_VP2/3_capins_587_KO_Bap_clone1 c = 106,5 ng/µl
P739 pSB1C3_001_VP2/3_capins_587_KO_Bap_clone2 c = 110,2 ng/µl
P740 pSB1C3_001_VP2/3_capins_587_KO_Bap_clone3 c = 71,46 ng/µl
P741 pGGTBT7-ZEGFR:1907_Middlelinker_EGFP_His c = 115,4 ng/µl

140. labday 05.10.2010

Site-directed mutagenesis in pSB1C3_mGMK_TK30 construct

Investigator: Bea

Comment: Since we are still waiting for the ordered TK30, idea was to mutate the PstI site in the TK30 region. After mutating the PstI it is ready for submitting. Addtionally the ordered and received sr3ß can be subcloned.

Protocol using the QuickChange Ligthning Kit from Stratagene:

https://2010.igem.org/Image:Freiburg10_SDM_PstI_TK30_05_10.tif

The follwoing PCR was used:

• 95 °C 2'
• 95 °C 20"
• 60 °C 1'
• 68 °C 2'
• Goto 2 repeat 17
• 68 °C 5'

After the PCR program was conducted, I added 1 µL of DpnI provided with the Kit to each sample and incubated it for 10 minutes.
For transformation XL-10 Gold cells with 2µL beta-mercaptoethanol have been used and plated on agar plates containing chloramphenicol.

Cellculture: Bad news

Something happened to our virus-production cell line AAV293.

Nearly all AAV293 cells are dead.

The whole Loop-Insertion Transfection from 3.10 is lost, our actual culture flasks aswell. We dont know exactly the cause of this cellular mass mortality. Maybe someting is wrong with the new FCS-stocks.

Repetition of pCerulean_VP1up_NLS_DARPin

Investigators: Achim

• The Test Digestion (1.10.) of the last attempts clones didn't look convincing. We sent clone 1 for sequencing yesterday, but we didn't recieve any results yet. That's why I decided to repeat the experiment today, in case results are negative.

• Details: See first run from 28.9.

Prep. Gel:

Harvest of viral stocks

Investigators:

Number of viral stocks: 4

• mVenus standard stock 10 x cm R/C: P468² plates => Harvest in 2 50 ml Falcons, four times freeze thaw centrifugation step with 2500g for 10 min
• TKGMK stock 10 x cm² plates R/C: P468 => Harvest in 2 50 ml Falcons, four times freeze thaw centrifugation step with 2500g for 10 min
• viral particles with GOI (mVenus) missing HGH one 6well plate => Harvest in 1 50 ml Falcon, four times freeze thaw centrifugation step with 2500g for 10 min
• viral particles with GOI (mVenus) missing beta globin one 6well plate => Harvest in 1 50 ml Falcon, four times freeze thaw centrifugation step with 2500g for 10 min
• viral particles with R/C missing HSPG binding motif one 6well plate => Harvest in 1 50 ml Falcon, four times freeze thaw centrifugation step with 2500g for 10 min
• viral particles with new standard R/C (intact HSPG binding motif) one 6well plate => Harvest in 1 50 ml Falcon, four times freeze thaw centrifugation step with 2500g for 10 min

Motivation:
The two new standard vectors are from now on called Control Vectors, to get valide data. The TKGMK Stock will be used for the MTT-ASSAY.

Repetition of Cloning lITR_phTERT_beta-globin_mGMK_TK30 into pSB1C3_hGH_rITR

Investigator: Anna

Comment: Second approach of Cloning lITR_phTERT_beta-globin_mGMK_TK30 into pSB1C3_hGH_rITR, first one didn't work (see labday 01.10.).

Vector name:

• pSB1C3_hGH_rITR (P186)

c= 129,6 ng/µl

Insert name:

• pSB1C3_lITR_phTERT_beta-globin_mGMK_TK30 (P673)

c= 266,4 ng/µl

0,4 g Agarose, 50 ml TAE (0,8%), 3 µl GELRED , at 115 Volt

Gel extraction:
Was performed according to the standard protocol.

T4 Ligation:

Transformation:
Was done following the standard protocol using BL21 cells.

Seeding HT1080 and AAV431 for transduction

• 3*6well plates HT1080
• 3*6well plates A431

for transduction with following viral stocks:

• mVenus Control Vector to quantify the other stocks
• mVenus without beta-globin
• mVenus without HGH
• mVenus in viral vectors without HSPG-Binding-site(P667)
• mVenus in viral vectors with HSPG-Binding-site, the new state-of-the-art-R/C (P668)

Cloning of pSB1C3_lITR_phTERT_beta-globin_CD and pSB1C3_lITR_CMV_beta-globin_CD

Investigator: Anissa

Vector name:

• pSB1C3_lITR_phTERT_beta-globin (p730)
• pSB1C3_lITR_CMV_beta-globin (P729)

Insert name:

• VB:pSB1C3_CD(P690)

Gel:
for vectors and insert :
0,5 g Agarose, 50 ml TAE (1%), 3 µl GELRED , at 110 Volt

Gel extraction:
Was performed according to protocol.

T4 Ligation:

• Volume vector P729: 1,39 µl
• Volume insert: 6,61 µl

• Volume vector P730: 3,55 µl
• Volume insert: 4,45 µl

Transformation:
Was performed according to standard protocol using BL21 cells.

Repetition of the test-digestion of p714,p715,p719,p720,p721,p724 and p726

Investigator: Anissa

• pSB1C3_lITR_CMV_beta-globin_mCherry: Cut with EcoRI, PstI & NdeI
  • P714 (Lane 1)
  • P715 (Lane 2)
    • Results:Looks good.

• pSB1C3_lITR_phTERT_beta-globin_mCherry: Cut with EcoRI, PstI & SacII
  • P719 (Lane 3)
    • Results:Looks good.

• pSB1C3_lITR_phTERT_beta-globin_CFP_hgh_rITR: Cut with EcoRI, AgeI & PstII
  • P720 (Lane 4)
  • P721 (Lane 5)
    • Results:The expected bands should run at 671 bp,2033 bp and 1855 bp. Sequencing has to be repeated

• pSB1C3_lITR_phTERT_beta-globin_CD: Cut with PstI & EcoRI
  • P724 (Lane 6)
  • P726 (Lane 7)
    • Results:The expected bands should run at 2035 and 2460 bp. The experiment has been repeated already today.

Repetition: Cloning of VP2/3_BAP_HSPG-KO and VP2/3_His_HSPG-KO into pCerulean_Zegfr:1907_Middlelinker and VP2/3_His_HSPG-KO into pCerulean_VP1up_NLS_mVenus

Investigator: Stefan

Comment: Cloning of 587-ko_His and 587-ko_BAP into pSB1C3_001_VP2/3_capins did not work out last time. Since cloning of VP2/3_capins started before sequencing results arrived, this experiment has to be repeated.

Vector name:

• pCerulean_Zegfr:1907_Middlelinker (P408)
• pCerulean_VP1up_NLS_mVenus (P426)

Insert name:

• pSB1C3_001_VP2/3_capins_587_KO_His_clone3 (P734)
• pSB1C3_001_VP2/3_capins_587_KO_Bap_clone1 (P738)

Gel:
0,4 g Agarose, 50 ml TAE (0,8%), 3 µl GELRED , at 115 Volt

Gel extraction:
Was performed according to protocol.

T4 Ligation:

Transformation:
Was performed according to standard protocol using BL21 cells.

PCR of VP1-3

Investigator: Kira

Comment: this approach was already repeated at least 2 times, but still even if its not one of the very important constructs, it should be finished by end of the month.

PCR*PCR program:

c(pKEX_VP1)=488 ng/ul
c(pKEX_VP2)=484 ng/ul
c(pKEX_VP2)=485 ng/ul

VP-1 praefix primer: 089 VP-2 praefix primer: 090 VP-3 praefix primer: 091 VP1-3 suffix reg_25: 0120

The PCR programm for all 3 samples was the same due to the weakest primer, which is VP-1 praefix primer

1% agarose gel

The gel shows only the primer bands on the bottom of the gel --> PCR failed again. Its going to be repeated tomorrow.

141. labday 06.10.2010

Cellculture

Investigator Patrick
Not only the 293 cells look bad. The A431 cells and the HT1080 cells die, too. There is no contamination detectable. Maybe there is something wrong with the DMEM because the now 100 % serum-free AAV293 cells dont die.

Transduction of HT1080 and A431 cells

The cells are not adherent so no transduction was performed.

Sequence analysis of pSB1C3_CD

Investigator: Bea

Comment: After test digestion revealed positive results, we sent one clone for sequencing (P690) with VF-2 and VR-2 primers. The tube numbers are: SB_1 and SB_2.

Results:

• Prefix looks well. Alle restriction sites can be found in the prefix RFC25.
• Suffixlooks well. Alle restriction sites can be found in the suffix RFC25.
• BUT: There seems to be a PstI recognition site within the sequence. Therefore the site-directed mutagenesis needs to be repeated.

Site-directed mutagenesis of pSB1C3_CD

Investigator: Bea

Comment: Since the sequence analysis revealed that the PstI restriction iste within the CD is NOT removed I prepared another Quickchange in order to mutate the PstI site.

Protocol:

The following PCR was used:

• 95 °C 2'
• 95 °C 20"
• 60 °C 10"
• 68 °C 1'45"
• Goto 2 repeat 17
• 68 °C 5'

After the PCR program was conducted, I added 1 µL of DpnI provided with the Kit to each sample and incubated it for 10 minutes at 37°C.
For transformation XL-10 Gold cells with 2µL beta-mercaptoethanol have been used and plated on agar plates containing chloramphenicol.

Sequencing analysis

Investigator: Stefan
Comment:
Sequencing reults of pSB1C3_CMV_Z_EGFR:1907_VP2/3_CapIns (P679), pSB1C3_CMV_Z_EGFR:1907_VP2/3_CapIns_HSPG-ko (P684), pSB1C3_001_VP2/3_587_HSPG-ko_His(P734) and pSB1C3_001_VP2/3_587_HSPG-ko_BAP(P738). In P679 and P684, CMV_Z_EGFR:1907 was cloned in front of VP2/3, in P734 and P738, 587_HSPG-ko_His/BAP was cloned into the 587 loop.

Test Digestion of pSB1C3_CMV_DARPin_MiddleLinker_VP2/3_insCap and pSB1C3_CMV_DARPin_MiddleLinker_VP2/3_HSPG-KO

Investigator: Hanna
Comment: Besides the Affibody we also want to test and characterize the DARPin E01 as a targeting motif for EGFR over expressing tumor cells. The day before yesterday a 3 fragment ligation was performed with the CMV promoter, DARPin and pSB1C3_VP2/3_insCap/pSB1C3_VP2/3_HSPG-KO.
2 clones were picked from each approach and preped today.

TEST DIGESTION:

• DNA: 2 µL
• Buffer 3: 1 µL
• BSA (10x): 1 µL
• XbaI: 0.5 µL
• BmgBI (cuts in the DARPin sequence): 0.5 µL
• H2O: 5 µL

Incubation: 2 hours.

Conclusion: Test digestion looks well: Expected fragments = 756 bp and 4409 bp.
Two samples were sent for sequencing to GATC using the CMV-F primer.

Repetition: Cloning of CFP into pSB1C3_lITR_phTERT_beta-globin and hgH_rITR into pSB1C3_lITR_CMV_beta-globin_mCherry and into pSB1C3_lITR_phTERT_beta-globin_mCherry

Investigator: Stefan

Comment:

Vector name:

• pSB1C3_lITR_phTERT_beta-globin (P437)
• pSB1C3_lITR_CMV_beta-globin_mCherry (P715)
• pSB1C3_lITR_phTERT_beta-globin_mCherry (P719)

Insert name:

• pSB1C3_CFP (P666)
• pSB1C3_hgH_rITR (P728)

Gel:
0,4 g Agarose, 50 ml TAE (0,8%), 3 µl GELRED , at 115 Volt

Gel extraction:
Was performed according to protocol.

T4 Ligation:

Transformation:
Was performed according to standard protocol using BL21 cells.

Biotinylation of the monoclonal IgG antibody A20

The biotinylation of the A20 antibody that recognizes the assembled virus was performed with a biotinylation Kit purchased from Dojindo.

• The first biotinylation reaction was performed according to the protocol with 150µg of the purified antibody but resulted in not detectable protein concentrations.
• The biotinylation reaction was repeated for a second time with 200µg and resulted in satisfying protein concentrations.
  • Successful biotinylation has to be tested in an other experiment.

Repetition of VP1-3 PCR

Investigator: Kira
PCR program:

c(pKEX_VP1)=488 ng/ul
c(pKEX_VP2)=484 ng/ul
c(pKEX_VP2)=485 ng/ul

VP-1 praefix primer: 089 VP-2 praefix primer: 090 VP-3 praefix primer: 091 VP1-3 suffix reg_25: 0120

Regarding the primer sequences, DMSO will be added to the PCR samples.

The PCR programm for all 3 samples was the same due to the weakest primer, which is VP-1 praefix primer

1% agarose gel
File:Freiburg10 VP1-3 PCR.jpg

Digestion of plasmid backbone:

pSB1C3_001 is used as backbone

incubation @ 37 C for approx. 2 h

1% agarose gel
File:Freiburg10 digestion-pSB1C3 001.jpg

Digestion of PCR product:

incubation @ 37 C for approx. 2 h

ligation with T4 ligase was performed over-night

Cloning of Rep into Rep52 and Rep78

Investigator: Kira
Comment: In order to perfom PCR, we have to clone the ordered Rep gene into Rep52 and Rep78 backbones.

Regarding the activity conditions of the enzymes, digestion was performed in 2 steps.

incubation @ 25 C for approx. 2 h
Dephosphorylation was performed because of the blunt cleavage. PCR phosphorylation followed in order to get rid off the buffer because Buffer 3 is not appropriate for further digestion. after PCR phosphorylation:
c(pMA_RC-insert)= 21,75 ng/ul c(rep52)= 75,82 ng/ul c(rep78)= 2,47 ng/ul

incubation for 2h at 37C

File:Rep52&Rep78.jpg

the gel shows that Rep78 backbone got lost.. Regarding the concentration, which was measured after PCR purification it might be possible --> digestion of Rep78 will be repeated tomorrow, while Rep52 is ready for ligation.

142. labday 07.10.2010

DARPin VP2 Fusion: Sequencing results

Investigator: Hanna

COMMENT: The DARPin was fused with the Middle Linker to the VP2/3 BioBrick and cloned into the pSB1C3 backbone. Yesterday's test digestion looked well, so one clone of the VP2/3_insCap and one clone of the VP2/3_HSPG-KO construct was sent for sequencing.

pSB1C3_CMV_DARPin_MiddleLinker_VP2/3_HSPG-KO

pSB1C3_CMV_DARPin_MiddleLinker_VP2/3_insCap

CONCLUSION: Sequencing looked well: 3 fragment ligation was successful - because the CMV-F primer was used for sequencing, the CMV promoter was successfully inserted. As shown in the alignments also the DARPin was inserted. This is the first time that the DARPin was sequenced - thus the original sequence must also be OK!
These two constructs are finished and are ready to be tested in cell culture via qPCR, ELISA,... and can be stored in our BioBrick Box for submitting.

Repetition of cloning of ordered Rep into Rep78

Investigator: Kira
Comment: Because the gel from yesterday did not show any bands in the Rep78 line, I desided to repeat this approach but to use more DNA, in order to be able to continue with the second digestion (see labday 06.10.2010)

The same procedure but with 7 ul Rep78 (c=556 ng/ul). After the first digestion, dephosporylation and PCR purification were performed and DNA was measured.

As a control, the ordered Rep was used again.

c(p190)= 28 ng/ul
c(Rep78)= 6,90 ng/ul

the second digestion as performed despite the low concentration.

File:Freiburg10 2010-10-07.jpg

The gel shows once again no detectable DNA of Rep78.

Transformation of VP1-3 & pSB1C3_001 and p190 &Rep52

Investigator: Kira

The transformation was performed according to the standard protocol with BL21. Compared to VP1-3 transformed cells, Rep52 cells revealed no visible pellet after centrifugation, thus 300 ul of the cells suspension was plated.

143. labday 08.10.2010

Mini-Prep and test digestion of several constructs

Investigator: Stefan

Comment: Mini-Preps were performed according to protocol:

Glycerol stocks were prepared:

• B641 pSB1C3_lITR_phTERT_beta-globin_CFP clone 1
• B642 pSB1C3_lITR_phTERT_beta-globin_CFP clone 2
• B643 pSB1C3_lITR_CMV_beta-globin_mCherry_hgH_rITR clone 1
• B644 pSB1C3_lITR_CMV_beta-globin_mCherry_hgH_rITR clone 2
• B645 SB1C3_lITR_phTERT_beta-globin_mCherry_hgH_rITR clone 1
• B646 pSB1C3_lITR_phTERT_beta-globin_mCherry_hgH_rITR clone 2

Mini-Prep was performed according to standard protocol:

• P791 pSB1C3_lITR_phTERT_beta-globin_CFP clone 1 c = 244.3 ng/µl
• P792 pSB1C3_lITR_phTERT_beta-globin_CFP clone 2 c = 214.3 ng/µl
• P793 pSB1C3_lITR_CMV_beta-globin_mCherry_hgH_rITR clone 1 c = 209.2 ng/µl
• P794 pSB1C3_lITR_CMV_beta-globin_mCherry_hgH_rITR clone 2 c = 262.4 ng/µl
• P795 pSB1C3_lITR_phTERT_beta-globin_mCherry_hgH_rITR clone 1 c = 234.7 ng/µl
• P796 pSB1C3_lITR_phTERT_beta-globin_mCherry_hgH_rITR clone 2 c = 207.2 ng/µl

Test digestion:

Comment:Additionally, P771 and P781 from yesterday's Mini-Prep were digested again.

Results:

Comment:Samples P791 to P796 perform like expected, they can be used for further cloning or testing in cell culture. P771 show strange bands, a test PCR will be performed to verify successful cloning. P781 does not show any DNA at all like last time. A new SDm will be performed for pSB1C3_mGMK_TK30 (P675).

Test-PCR of pSB1C3_lITR_phTERT_beta-globin_mGMK_TK30_hgH_rITR

Investigator: Stefan

Comment: Test digestion showed strange results (an additional band at 500bp which does not fit any expectations), therfore an additional test-PCR was performed to verify successful cloning of the complete constructs.

Gel:
0,5 g agarose, 50 ml TAE (1%), 115V, 50 minutes

Comment: Test PCR showed successful cloning of lITR_phTERT_beta-globin_mGMK_TK30 into pSB1C3_hgH_rITR. SDM to remove PstI in TK30 can be performed.

Trafo evaluation of VP1-3 and Rep52 constructs

Investigator: Kira
VP1-3 contain lots of colonies, while Rep52 plate is empty

Repetiton: Site-directed mutagenesis in pSB1C3_mGMK_TK30 construct

Investigator: Stefan

Comment: The first try to remove the PstI restriction site delivered no plasmid DNA, so another approach needs to be started.

Protocol using the QuickChange Lightning Kit from Stratagene:

Ingredients:

The following PCR program was used:

• 95 °C 2 minutes
• 95 °C 20 seconds
• 60 °C 1 minute
• 68 °C 2 minutes
• Goto step 2 repeat 17 times
• 68 °C 5 minutes

Digestion using DpnI:
To digest methylated and hemi-methylated DNA, 1 µl of DpnI was added and the mixture was incubated for 10 minutes at 37 °C.
Transformation:
Since XL-10 Gold cells delivered a bacteria lawn on the plates, this time XL1b cells were used.

144. labday 09.10.2010

Mini-Prep of pSB1C3_CD_SDM-PstI

Investigator: Stefan

Comment: Mini-Prep was performed according to standard protocol.

Glycerol stocks were prepared:

• B647 = pSB1C3_CD_SDM-PstI clone 1
• B648 = pSB1C3_CD_SDM-PstI clone 2

Mini-Prep was performed according to standard protocol:

• P797 = pSB1C3_CD_SDM-PstI clone 1 c = 8,2 ng/µl
• P798 = pSB1C3_CD_SDM-PstI clone 2 c = 7,1 ng/µl

Comment: Since Mini-Prep from XL-10 cells yielded that little plasmid, a re-trafo will be performed using BL21 cells.

Transformation:
A 1:10 dilution of both plasmids was prepared and 1 µl was added to BL21 cells.
Transformation was performed according to standard protocol. Cells were plated on agar plates containing chlorampenicol.

Preparation of competent cells and Test-Trafo

Investigator: Stefan

Preparation of BL21 (red line) and XL1-blue (green X) cells was performed according to standard protocol.
Do not use cells until further notice!

Test PCR of qPCR primer for phTERT

Investigator: Bea

Comment: The GOI which is flanked by the ITRs and encapsidated in the capsid is the mGMK_T30 driven by the pHTERT promoter which is only active in several tumor cells. Since we have never tested the primers if they work I wanted to do that. This time I tried to use the TAQ polymerase which we received from Peqlab. Since I could not find a standard protocol for the PCR provided by peqlab I tried to compare several manuals.

Protocol:

[[Image:|thumb|center|700px]]

The following PCR was used:

• 94 °C 3'
• 94 °C 30"
• 50 °C 30"
• 72 °C 10"
• Goto 2 repeat 17
• 68 °C 7'

Result:
Unfortunately the expected PCR product with a size of 182 bp could not be detected as it can be seen in the agarose gel. I can not say if the protocol needs to be modified or if the primer pair did not anneal adequatly. Therefore, I am going to repeat the PCR tomorrow by using the Phsuion polymerase for checking the results.

Cloning of p40 in front of VP123

Investigator: Bea

Comment: We want to test the promoter strenth of several promoters (CMV, P40, p5, p5tataless) and compare them in order to provide the possibility of choosing the proper promoter for each experiment and to titrate the plasmids during transfection. Therefore, the p40 promoter needs to be fused in front of the VP123 construct in order to compare the CMV and the p40 promter

Protocol:

[[Image:|thumb|center|700px]]

The following results of the agarose gel can be seen. The fragments were cut out and a gel extraction has been performed:
[[Image:|thumb|center|700px]]
For transformation BL21 cells have been used and plated on agar plates containing chloramphenicol.

Site-directed mutagenesis of pSB1C3_phtert_mgmk_tk30

Investigator: Bea

Comment:

Protocol:

[[Image:|thumb|center|700px]]

The following PCR was used:

• 95 °C 2'
• 95 °C 20"
• 60 °C 10"
• 68 °C 2'50"
• Goto 2 repeat 17
• 68 °C 5'

After the PCR program was conducted, I added 1 µL of DpnI provided with the Kit to each sample and incubated it for 10 minutes at 37°C.
For transformation XL-1 cells have been used because the bacterias of the last site-directed mutageneis approaches using XL-10 cells showes extensive grwoth (bacterial lawn). I plated on the transformaned cells on agar plates containing chloramphenicol.

Cloning HSPG-KO_empty into pSB1C3-001_pCMV_[AAV2]VP123_453_RGD and pSB1C3-001_pCMV_[AAV2]VP123_453_Z34C

Investigator: Achim

• In order to obtain transduction data for our targeting approaches, we still need constructs with RGD/Z34C in the 453 loop as well as HSPG_KO_empty in the 587 loop.

• I digested pSB1C3_HSPG-KO_empty (P611) as well as pSB1C3-001_pCMV_[AAV2]VP123_453_RGD (P634) and pSB1C3-001_pCMV_[AAV2]VP123_453_Z34C (P641)with BamHI and PvuII and ligated the HSPG-KO_empty motive into both vectors.

• Digestion:20µl,Buffer 4, BSA, 1µl enzyme, 37°

• • VB:pSB1C3_001_587_KO_empty (P611)
    • c=160 ng/µl ->14 µl
  • pSB1C3-001_pCMV_[AAV2]VP123_453_RGD (P634)
    • c=239 ng/µl (1:10 dilution of midiprep)->5 µl
  • pSB1C3-001_pCMV_[AAV2]VP123_453_Z34C (P641)
    • c=229 ng/µl (1:10 dilution of midiprep) -> 5µl

• Dephosphorylation:

• Prep gel:

• Ligation: T4

Cellculture

Investigator Patrick
Transduction of HT1080 and A431. Yesterday 3 6-well plates of HT1080 and A431 were seeded with 200.000 cells into each well. The transductions were performed with the following AAV2s [[Image: Mistake.png|thumb|right|100px|Nothing to complain about, but to compliment on this nice wiki entry! well done pat! ;-)

• mVenus without beta-globin
• mVenus without HGH
• mVenus HSPG KO
• mVenus standard
• mVenus new standard

Expected results:

• mVenus without beta-globin: beta globin is said to improve the expression therefore we expect a worse mVenus expression compared to the standard AAVs.
• mVenus without HGH: HGH is responsible for the mRNA polyadenylation of the virus so we expect expect a worse mVenus expression compared to the standard AAVs, too.
• mVenus HSPG KO: the primary AAV2 receptor (the HSPG receptor) was knocked out therefore we expect a worse tranduction rate (about 0,3 to 0,4 of the standard transduction rate, assuming that there are HSPGs on the HT1080 and A431 cell surface). The worse the better.
• mVenus standard: this will be the reference for the other four transduction experiments (no point mutations, GOI: mVenus)
• mVenus new standard: AAV2 with 4 point mutations, inserted rep & cap and "remutated" KpnI restriction site hopefully yiels results similar to the mVenus standard.

145. labday 10.10.2010