|
 
- 积分
- 3053
- 威望
- 3053
- 包包
- 5595
|
元旦休息了一阵子，新年新气象，新闻更好看！11年会议还真不少
5 z+ F& t6 X: q0 x: i# h
- n# ^& ~6 Y$ T7 f1 HGlance at last issue:& ?& ?* C8 O4 X
' r" L! `4 u! H. N4 D% i$ U
“One could say that stem cells are stamped with an “expiration date" during the maturation process. Therefore, all specialised cells in our bodies have a limited lifespan. The reason for this is that the chromosomes′ ends, telomeres, act as a DNA clock that measures the cells′ age. Each time a specialised cell divides, the telomeres′ DNA shrinks. When the telomeres have become too short, the cell can no longer divide and it dies."--Associate Professor Tomas Simonsson from the SahlgrenskaAcademy at the University of Gothenburg.
4 L( K8 g: t$ H2 @
% R( r# r* S( ]7 k$ R"In addition to the ethical considerations, human parthenogenetic stem cells offer a potentially superior solution to stem‐cell based therapies because they allow immune‐matching that may alleviate immune rejection problems that are likely to hamper other stem cell therapies. This is especially important when the patients have a genetically‐based disease, and cannot use their own stem cells. ISCO is one of the few therapeutic research organizations pursing the utilization of these unique cells because of not only the ethical advantages, but also because of these important medical considerations."--Jeffrey Janus.9 z' ~) O" V2 n& c
/ w5 o! ~- y. g
“The big challenge with embryonic stem cells is getting all the cells in a culture to do the same thing together, in order to make specific cells types. This work is a big step towards that. Using the same principles we could adapt the procedure to produce not just chondrocytes, but other types of cells, for different clinical applications.”--Professor Kimber, Co-director of the North West Embryonic Stem Cell Centre." Q" v- L5 S% [+ h1 ?
2 X. B7 u; B" B8 f7 ?, A"This is going to be an enormous resource for researchers interested in tracking cells involved in early human development. It will be very interesting to learn how these enhancers affect gene expression in each cell type...We are interested in understanding how genomic information is integrated with epigenetic changes to produce cell‐type‐specific regulation — in this case in the embryonic stem cells. Often this regulation is accomplished via gene activation mediated by a distant enhancer."--Joanna Wysocka, PhD, assistant professor of developmental biology and of chemical and systems biology and senior author of the study, was quoted as saying.
; W6 p3 P$ I* i/ o6 u+ c' l
3 a: G+ s$ _9 |3 o9 P( I! K$ ^"It's almost as if these cells are lurking in the background, waiting to pounce after chemotherapy has wiped out most of the other cells."--Ash Alizadeh, MD, PhD. from Stanford University. @1 u" V3 @# j4 [9 Z
1 A* j$ W5 h9 k3 Y. ?
" i6 W& ]! K( VThis issue:* F( i+ t, @" \9 ~8 s
. ]1 g. t0 ^; w8 e8 F
, J, I# w( `% B" y- b, m9 ~7 iVideo news:. X: E9 V( @* s0 h8 s. ~/ @0 ^
/ @9 `9 [( p* q
Trial under way to test treatment of ALS using human stem cells?
' q( Y) Y- [ T: |3 h4 shttp://www.ktvb.com/news/health/112774654.html |
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 + 20
包包 + 30
查看全部评分
|
发表于 2011-1-6 19:57
