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回复 白巧克力 的帖子! v; c4 ]9 U& M
4 B* D' M! L3 Y" f. C$ ^几点讨论。
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Cellular differentiation and lineage commitment are considered to be robust and irreversible processes during development
5 _1 i( K6 `& K& M+ G, Z6 l" X$ ULineage commitment的操作性定义更接近“(细胞的)谱系趋向性”。
$ h+ `0 g" Y" h/ e! R, kRecent work has shown that mouse and human fibroblasts can be reprogrammed to a pluripotent state with a combination of four transcription factors s d" d; L5 E6 k& A% @
这是指亚马纳卡的经典研究,不宜反以为“我们近期的研究发现”,直接译为“近期研究表明”好些。1 A: @; t+ ~3 _ e' p; E
This raised the question of whether transcription factors could directly induce other defined3 e% I) G1 l' t5 E+ }
somatic cell fates, and not only an undifferentiated state.
# V2 R4 x, n: c+ J$ _* r# Q翻译为“问题出现在。。。”给人这类研究有问题的印象。其实是“这类研究提示了另一个问题”。“直接诱导为其他成体细胞状态”,defined...fates,说“诱导为某种命运”有点太直。意译就可以。
( U! Y, g) y3 U* d% Z. ]6 xWe hypothesized that combinatorial expression of neural-lineage-specific transcription factors could directly convert fibroblasts into neurons. Starting from a pool of nineteen candidate genes, we identified a combination of only three factors, Ascl1, Brn2 (also called Pou3f2) and Myt1l, that suffice to rapidly and efficiently convert mouse embryonic and postnatal fibroblasts into functional neurons in vitro. These induced neuronal (iN) cells express multiple neuron-specific proteins, generate action potentials and form functional synapses. Generation of iN cells from non-neural lineages could have important implications for studies of neural development, neurological disease modelling and regenerative medicine.
/ {6 u& L2 S/ S0 A \/ q! ~3 v最后一个意义是“再生医学”,没有提“药物的重发现”。“有”=“由”。
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, d }1 g0 A4 o5 @! a为什么说这篇算是最有意义的呢? |
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