- 积分
- 281
- 威望
- 281
- 包包
- 3258
|
回复 weiyepan 的帖子; q8 l3 G3 D T& I& C. w+ Y; w" q
, u- L- d" m6 C) S1 N8 D
Original Article/ \# C7 p1 [/ E, j+ w! C
9 `, u" Z ~% M! i6 D7 P
Molecular Therapy (24 November 2014) | doi:10.1038/mt.2014.226" m' P1 Q) A, b$ W1 q# l
: r, p" A2 W# \2 o* k1 w6 T! V1 G, wEfficient and Allele-Specific Genome Editing of Disease Loci in Human iPSCs
- ~4 U4 H# b. ~$ K; S# Q9 R- b& f$ J% F7 A
Cory Smith, Leire Abalde-Atristain, Chaoxia He, Brett R Brodsky, Evan M Braunstein, Pooja Chaudhari, Yoon-Young Jang, Linzhao Cheng and Zhaohui Ye
5 d; \0 y* v4 w, s6 @4 g6 K, r( ^
Abstract$ B6 J) n4 V( L: b
3 v5 C/ [* K G' s _
Efficient and precise genome editing is crucial for realizing the full research and therapeutic potential of human induced pluripotent stem cells (iPSCs). Engineered nucleases including CRISPR/Cas9 and transcription activator like effector nucleases (TALENs) provide powerful tools for enhancing gene-targeting efficiency. In this study, we investigated the relative efficiencies of CRISPR/Cas9 and TALENs in human iPSC lines for inducing both homologous donor-based precise genome editing and nonhomologous end joining (NHEJ)-mediated gene disruption. Significantly higher frequencies of NHEJ-mediated insertions/deletions were detected at several endogenous loci using CRISPR/Cas9 than using TALENs, especially at nonexpressed targets in iPSCs. In contrast, comparable efficiencies of inducing homologous donor-based genome editing were observed at disease-associated loci in iPSCs. In addition, we investigated the specificity of guide RNAs used in the CRISPR/Cas9 system in targeting disease-associated point mutations in patient-specific iPSCs. Using myeloproliferative neoplasm patient-derived iPSCs that carry an acquired JAK2-V617F point mutation and α1-antitrypsin (AAT) deficiency patient-derived iPSCs that carry an inherited Z-AAT point mutation, we demonstrate that Cas9 can specifically target either the mutant or the wild-type allele with little disruption at the other allele differing by a single nucleotide. Overall, our results demonstrate the advantages of the CRISPR/Cas9 system in allele-specific genome targeting and in NHEJ-mediated gene disruption.
! \. h! Y2 s: P
$ Z* U; r& ~' _1 V2 a: Rpdf 文件如下》6 h( z: Z8 k# l9 f. J
8 S: Y8 q' U* U9 J5 u4 B4 D
|
附件: 你需要登录才可以下载或查看附件。没有帐号?注册
-
总评分: 威望 + 2
包包 + 10
查看全部评分
|