现在iPS领域一个很关键的问题就是如何用virus free or integration free的方法成功诱导iPS。我有个想法,请大家讨论。( b+ ^! h$ Y( E% E
microRNA在干细胞更新和分化过程中起到很重要的作用(please read review by Haifan Lin on 2008)。而且,microRNA可以人工合成。. P I# T# K& p6 C
我们可以用microRNA chip的方法找出在ESC和MEF表达显著差异的microRNA,然后用yamanaka的方法去筛选最佳组合。 * M% K) X( y3 p' D请拍砖作者: 双刀 时间: 2010-1-17 15:52
楼主可以给出Haifan Lin 的文章么 想看看 谢谢作者: Yedan 时间: 2010-1-18 12:14
miRNA的chip data网上早就有了,但是miRNA的准确功能不是预测或chip数据就可以说明的,必须实验验证的。miRNA在iPS领域还很新,我现在的课题就是这个,有兴趣可以联系。" q, }% X2 w T) ^8 A/ b
还有林海帆的那篇文章讲的是miRNA和三种干细胞的关系,不是iPS.作者: susanliuxue 时间: 2010-1-18 18:56
回复 9#maxiaorongqp : z. m- m" A0 @5 T: y# u( w6 K * M: r) `1 b. A+ `/ K7 i; J. mthank you, 7 B3 [8 l& ?8 Ocan you tell me the title of this paper?作者: freewangjianwei 时间: 2010-1-19 16:26
Lin S L,chang D C,chang-Lin S,et al.Mir-302 reprograms human skin cancer cells into a pluripotent ES-cell-like state,RNA,2008,14:2115-2124作者: zlightmiss 时间: 2010-2-1 15:01
回复 3#freewangjianwei 3 \& S: ]* w, R3 g : K( K" u4 b- g * D7 S. }: u% W) I! s 这样的话RNA可能就更加不稳定了。作者: iyaofying888 时间: 2010-2-2 22:20
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, ]+ k5 z3 `0 q- {3 G, K3 ] : T4 J. l4 F) N& y, Y4 f) k0 @Nature Biotechnology,doi:10.1038/nbt.1535,Robert L Judson,Robert Blelloch0 i- u9 B# T* N/ h9 x4 Q C8 o- q+ o4 i# _! k& N `
, B% ?6 D4 v" @* |5 F+ e, c) [ # y( X4 ~1 E) ^Embryonic stem cell–specific microRNAs promote induced pluripotency$ ~2 W0 x/ n3 o n8 ~
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/ _0 k6 M# P MRobert L Judson1, Joshua E Babiarz1, Monica Venere1 & Robert Blelloch12 w6 @+ s4 w* j* r1 g3 x
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( O* N# l$ q0 m0 }& @: Z8 oThis report demonstrates that introduction of microRNAs (miRNAs) specific to embryonic stem cells enhances the production of mouse induced pluripotent stem (iPS) cells. The miRNAs miR-291-3p, miR-294 and miR-295 increase the efficiency of reprogramming by Oct4, Sox2 and Klf4, but not by these factors plus cMyc. cMyc binds the promoter of the miRNAs, suggesting that they are downstream effectors of cMyc during reprogramming. However, unlike cMyc, the miRNAs induce a homogeneous population of iPS cell colonies. ( y5 V+ d# s4 [/ X, a# {' Y* B, W3 X2 J! l+ o . B' g& n( Y% E" }! [; H+ ?/ D, n! f* H8 R( i6 KThe Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Center for Reproductive Sciences, and Department of Urology, University of California, San Francisco, San Francisco, California, USA.作者: liulilin 时间: 2010-5-18 13:56