基础细胞生物学告诉我们细胞分化方向由细胞质而不是细胞核操纵,细胞所处的微环境影响细胞分裂的不对称性,最终决定细胞命运。1 T6 _, w0 f3 q, `
细胞重编程(reprogramming)指细胞的表观遗传学(Epigenetics)重构,包括自发重编程(disease)和人为重编程(iPS)。 ) O/ U. C5 a0 ?+ h3 W' Y3 H. ~# y* k0 l" N# @
人工细胞重编程技术已经历了核移植重编程、整合DNA病毒重编程、miRNA重编程几个阶段,不久单纯的细胞因子重编程及化学小分子重编程技术也将实现... ) n `/ w6 B! k2 M ; ?/ w% ^( R7 [/ }) O/ B山雨欲来风满楼,激动人心的时刻即将到来,仅仅通过微环境调控对细胞质进行操纵,就可以实现细胞命运的无限变换——细胞微环境重编程(niche reprogramming )作者: BioMan 时间: 2011-5-31 01:19
Interesting post. I believe the recent paper from Scadden lab showed the effect of oncogenic niche on HSC3 c( m; r( q. l! N, O! r
Do you know other studies or a review about niche reprogramming for determining cell fate? 0 T0 Q L# _& U" l2 V9 a& r7 F
$ C0 J1 ]& y% k! TLink to the Scadden paper http://bit.ly/l2bCS5 " b5 G9 ?7 R& O : E" o8 I d/ x2 k; n! yThank you!作者: zyyzyy1985 时间: 2011-5-31 02:35
回复 BioMan 的帖子 - U4 H7 g# c; h" s9 G4 f: B' I & y( T( ~- M# [7 t& G) |. xBone progenitor dysfunction induces myelodysplasia and secondary leukaemia( o, z8 U3 |7 v7 x h
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文献我刚才给上传了,支持一下。哈哈 作者: 懵懂干细胞 时间: 2011-5-31 09:28
BioMan 发表于 2011-5-31 01:19 ! Q. T$ v. A+ B: |/ ?
Interesting post. I believe the recent paper from Scadden lab showed the effect of oncogenic niche o ...
6 K! {3 q7 C' l8 B6 r# |附件中提供几个微环境重编程(niche reprogramming)的典型案例,当然这场革命烈焰最终目的将是烧到体内——直接重编程(in vivo direct reprogramming )) ~1 D& V" Y# w" L
回复 临床干细胞 的帖子 1 {! I3 o' ]) N; t) H; o; E ]0 l `1 n6 g
不好意思,niche reprogramming 这个词是老狼杜撰的$ [- r- k* Z& C; ^( ]& ~' }2 L
1 _ ^" M% K# H H- ]- W9 Y其他还杜撰了一些东西,参见:“细胞生物学魔鬼词典(A Devil’s Dictionary of Cell Biology)http://www.stemcell8.cn/thread-40154-1-1.html ” 2 Y n p; n2 z5 }6 M& `- l( B+ \% [4 G
子曰:上善若水 大成若缺 干细胞治疗的终极解决方案就是不使用外源干细胞(cell-free is the final solution of stem cell therapy )作者: regene 时间: 2011-5-31 15:06
密切关注~~~作者: huangcong1988 时间: 2011-5-31 16:59
有道理,期待。。。作者: liulipingldyy 时间: 2011-5-31 17:58
需要学习作者: zhenhua 时间: 2011-6-1 00:12
It is a very interesting idea!7 ^, M+ s; u; H- Y o
I think reprogramming is controlled by gene expression and its level. 1 u. E6 a7 Z. l6 ]$ d4 I* ^Niche may provide signal molecule,physical condiction or others,eventually, alter gene expression.作者: songtianlong 时间: 2011-6-1 09:28
The theory of the”stem cell niche”was originally proposed for the hematopoietic system.and niches also exist in testicular tissues.The niche for spermatogonial stem cells is a semi-isolation system,characteristic of specific number regulation and changing with the age.(http://www.ncbi.nlm.nih.gov/pubmed/18077919) - R# m- B- G' Q' z* f& GBy the way,I agree with the idea that Cell-free is the final solution of stem cell therapy. Just like Chinese medicine theory,Cell factors which compared to medicine were used to help regulate the inner balance of our body and prevent diseases.作者: qizhi502 时间: 2011-6-1 22:17
回复 sunsong7 的帖子" d' Y* W0 X& a. r* `
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Thanks for sharing this interesting in formation. 4 S6 N5 [' m5 l6 i) n [- tIf the theory really worked in the way that cancer is not a result of the so-called genetic mutation but a consequence of niche reprograming it would mean that 1) the evironment out of the nucleus and 2) the environment out of the cell and 3) the natural environment, i.e. macro-environment, have been playing a decisive role. And it would be a revolutionary finding that guides the anti-cancer research into a new stage! x# l2 Z& |% Y, l4 mTo control the both micro-and-macro-environments, i.e. to stop the interaction between the micro-and-macro-enviroments will be the focus for against cancer. Or frankly, the key is how to stop the niche reprograming by barring any factors as the necessary conditions enviroments out of the nucleus. Mama mia it is still a great project! 作者: JOEL 时间: 2012-6-9 06:50
回复 sunsong7 的帖子6 C$ [+ p/ E$ Y% O
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Quotation ------"子曰:上善若水 大成若缺 干细胞治疗的终极解决方案就是不使用外源干细胞(cell-free is the final solution of stem cell therapy )" 6 k" {3 m# ~: }0 w# [This is wisdom!作者: 626630192 时间: 2012-7-26 10:21