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Homology-directed gene repair

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Presentation on theme: "Homology-directed gene repair"— Presentation transcript:

1 Homology-directed gene repair
exogenous repair substrate I-SceI xx sister chromatids xx Rad51… Sequence correction xx

2 Homology-directed gene repair
exogenous repair substrate I-SceI xx sister chromatids xx Rad51K313Q Sequence correction xx

3 GFP reporter w/ exogenous donor
repair substrate BcgI CA puroR I-SceI STOP gene conversion CA GFP+ puroR BcgI

4 DRGFP reporter puroR GFP+ puroR gene conversion CA CA I-SceI STOP
BcgI gene conversion CA GFP+ puroR BcgI BcgI

5 013108 Nalm6 Transfection no DNA 24hr 1µg pmaxGFP 24hr

6 Nalm-6 DRGFP Functional screen of puroR cell lines
in 1?/24 I-SceI  nuc dependent GFP+

7 Nalm-6 DRGFP#13 72 hrs No I-SceI 72 hrs + I-SceI No TSA + TSA 030308

8 Possibilities Check more clones Chromatin Nalm-6 defect acetylation
methylation Nalm-6 defect Msh2-… try other cell lines

9 David Bednarski Amber Caracol Jason Cummings Luther Davis Johanna Eddy Nicolle Hamilton Jana Mandic Ellen Ordinario Liz Sacho Michael Stevenson Aarthy Vallur Munehisa Yabuki Nancy Maizels

10

11 GFP x FL2-H No DNA + pEGFP

12 New GFP reporter w/ exogenous donor
repair substrate CMV NeoR lacO intron I-SceI… STOP (x2)

13 Transfection Efficiency
48 hrs 72 hrs 96 hrs 10 1 2 3 4 FL2-H: FL2-Height FL1-H: GFP 10 1 2 3 4 FL2-H: FL2-Height FL1-H: GFP 10 1 2 3 4 FL2-H: FL2-Height FL1-H: GFP No pGFP 10 1 2 3 4 FL2-H: FL2-Height FL1-H: GFP 29.3 10 1 2 3 4 FL2-H: FL2-Height FL1-H: GFP 19.5 10 1 2 3 4 FL2-H: FL2-Height FL1-H: GFP 13.3 + pGFP

14 I-SceI Expression  Dead Cells?
No DNA pEGFP pCMV-Sce 200 400 600 800 1000 FSC-H: Forward Scatter SSC-H: Side Scatter 83.1 0.81 200 400 600 800 1000 FSC-H: Forward Scatter SSC-H: Side Scatter 83.2 1.23 200 400 600 800 1000 FSC-H: Forward Scatter SSC-H: Side Scatter 76.3 3.19 48 hrs 030308

15 Nalm-6 DRGFP GFP+ clone No I-SceI + I-SceI #13 72 hrs


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