山中当年在美国也是整天对着老鼠笼子默默流泪来的 后来回日本接着博后得了抑郁症要退的时候突然拿到那个二流大学的faculty 进去以后还整天被劝说做点有用的东西不好么 再后来...就搞大了 不过相比只需要转四种就可以reprogramming 我觉得最近说的ips其实不是induced的ps只是immortalized的ps比较靠谱 Multilineage-differentiating stress-enduring (Muse) cells are a primary source of induced pluripotent stem cells in human fibroblasts. 当然不管怎样山中最后还是可能拿奖 但是ips会成为有史以来最大的生物泡沫也说不定
I'll comment from my memory, some facts could be wrong but shouldn't be too far off....here it goes... was just wondering how many of you are working in the related field and knows the history...Some comments here are just so off...e.g: i would be extremely surprised that if Thomas would have a share for iPS...the reprogramming has been there for so long--it has a rich and very clear path, I am sure many many have been thinking about using several factors to reprogram to stemness...In fact there are a long list of researches/attempts before Shinya in term of reprogramming(some may be better called as transdifferentiations with many different ways--factors, small molecules, culture conditions/medium, cell fusion, nuclear cloning etc etc...From Xonpus work(Sir John Gurdon, and some other groups tried before Gurdon but take it negatively as a failure due to it is extremely rare happening...and Gurdon took it positively and improve it, then come to cell fusion, cell extracts, and dolly etc etc, and eventually the iPS... In term of Shinya, if one has read through his research records, one would know Shinya is one of the guys who were at the best position to think along the research direction and have the necessary knowledge/expertise and experimental accumulations to possibly give it a try and make it happen.... However, all that said, it was a crazy experimentation and only those stupid -like bold mind would want to give it a try....the idea was simple, but the assay, the design and the feasibility, and the extreme demand for labor could deter anyone other than those stupid-like bold mind...And I bet no one including Shinya could ever predict that it worked out so nicely and robustly, NO ONE! That's why once it was reported, it was so easy for any one to follow... With that, I would solute Shinya for their boldness and very smart experimental designs...and as far as I am concerned, a Nobel is for sure expected some time in the future...Frankly, I the student would deserve a share as well but I don't think it would ever happen....
【在 n********k 的大作中提到】 : I'll comment from my memory, some facts could be wrong but shouldn't be too : far off....here it goes... : was just wondering how many of you are working in the related field and : knows the history...Some comments here are just so off...e.g: i would be : extremely surprised that if Thomas would have a share for iPS...the : reprogramming has been there for so long--it has a rich and very clear path, : I am sure many many have been thinking about using several factors to : reprogram to stemness...In fact there are a long list of researches/attempts : before Shinya in term of reprogramming(some may be better called as : transdifferentiations with many different ways--factors, small molecules,
h*y
54 楼
You are absolutely right about the ground-breaking contributions of Yamanka' s to the iPSC. Thomson deserves credit for the first to isolate human ESC, but his contributions in making human iPSC was not as great as Yamanaka. Shinya is humble and kept telling the audience the story that it was his postdoc's (Kazutoshi Takahashi) original idea to transduce all 20 factors together to see if his hypothesis would work, which anyone would think to be a "stupid idea". Alas, it worked and they were then able to use the 20-1 approach to identify the 4 factors. Now people are using the same approach to find different combinations of TFs for transdifferentiation studies. In retrospect, their success not only depended on their ingenious idea, excellent experiment design and hard work, but also because of the plasticity of MEFs. It might not work if they choose another cell. Luck is definitely an important ingredient for success.
too path, attempts
【在 n********k 的大作中提到】 : I'll comment from my memory, some facts could be wrong but shouldn't be too : far off....here it goes... : was just wondering how many of you are working in the related field and : knows the history...Some comments here are just so off...e.g: i would be : extremely surprised that if Thomas would have a share for iPS...the : reprogramming has been there for so long--it has a rich and very clear path, : I am sure many many have been thinking about using several factors to : reprogram to stemness...In fact there are a long list of researches/attempts : before Shinya in term of reprogramming(some may be better called as : transdifferentiations with many different ways--factors, small molecules,
n*g
55 楼
MEF is a easy choice.
Yamanka' be
【在 h******y 的大作中提到】 : You are absolutely right about the ground-breaking contributions of Yamanka' : s to the iPSC. Thomson deserves credit for the first to isolate human ESC, : but his contributions in making human iPSC was not as great as Yamanaka. : Shinya is humble and kept telling the audience the story that it was his : postdoc's (Kazutoshi Takahashi) original idea to transduce all 20 factors : together to see if his hypothesis would work, which anyone would think to be : a "stupid idea". Alas, it worked and they were then able to use the 20-1 : approach to identify the 4 factors. Now people are using the same approach : to find different combinations of TFs for transdifferentiation studies. In : retrospect, their success not only depended on their ingenious idea,
n*g
56 楼
Thompson and Yamanaka are in huge different level. I don't know why people put them together, because Thompson is a super nice boss?
Yamanka' be
【在 h******y 的大作中提到】 : You are absolutely right about the ground-breaking contributions of Yamanka' : s to the iPSC. Thomson deserves credit for the first to isolate human ESC, : but his contributions in making human iPSC was not as great as Yamanaka. : Shinya is humble and kept telling the audience the story that it was his : postdoc's (Kazutoshi Takahashi) original idea to transduce all 20 factors : together to see if his hypothesis would work, which anyone would think to be : a "stupid idea". Alas, it worked and they were then able to use the 20-1 : approach to identify the 4 factors. Now people are using the same approach : to find different combinations of TFs for transdifferentiation studies. In : retrospect, their success not only depended on their ingenious idea,
n*k
57 楼
Luck is definitely an important ingredient for success----In this particular case, I would say it was more due to their "stupidity"(I solute them for this)...I think simply many are too smart to try it and disprove it once the idea surfaces, confronted with the sheer complexity of the numberless possibility and extreme uncertainty, no one knows whether it would ever work , how many factors, what conditions...Basically it was virtually a completely dark box...another important factor I personally think was: The student (later postdoc) already had a Nature or Science paper for his degree ---he had no pressure but freedom to mess around...It was a very challenging but enjoyable trial for him to take...the history could be completely different, if it was in another guy's hand...In fact, a female postdoc made some headway but gave it up and even left the lab once for all before he picked up the project...This is why I think he deserves a share...like Rudolf Jeniesch, sadly Thomas James will miss Nobel despite his seminal contribution on human ESC... I don't see his chance to get one even before iPS...now here comes the iPS... like XD Wang's, before autophagy and other form of PCD...With 2002(3?) Nobel and with the prime time for autophagy etc and the limited usage of apoptosis in cancers etc, XD Wang's chance is virtually non-existent unless future studies prove the otherwise...
Yamanka' be
【在 h******y 的大作中提到】 : You are absolutely right about the ground-breaking contributions of Yamanka' : s to the iPSC. Thomson deserves credit for the first to isolate human ESC, : but his contributions in making human iPSC was not as great as Yamanaka. : Shinya is humble and kept telling the audience the story that it was his : postdoc's (Kazutoshi Takahashi) original idea to transduce all 20 factors : together to see if his hypothesis would work, which anyone would think to be : a "stupid idea". Alas, it worked and they were then able to use the 20-1 : approach to identify the 4 factors. Now people are using the same approach : to find different combinations of TFs for transdifferentiation studies. In : retrospect, their success not only depended on their ingenious idea,
n*k
58 楼
what made you think so?? Are you referring to iPS or generally? for iPS, Yes , no doubt about it..generally, I am not sure you could say that...I am not even sure how we would compare them...
nice
【在 n***g 的大作中提到】 : Thompson and Yamanaka are in huge different level. : I don't know why people put them together, because Thompson is a super nice : boss? : : Yamanka' : be
n*g
59 楼
Even generally, they are in totally different level.
Yes not
【在 n********k 的大作中提到】 : what made you think so?? Are you referring to iPS or generally? for iPS, Yes : , no doubt about it..generally, I am not sure you could say that...I am not : even sure how we would compare them... : : nice
n*k
60 楼
I know what you mean and I knew that's what you would say ...but I just don' t think one shall compare/rank them that way...Should iPS never exist, Thomas James' contribution would be a lot a lot more impacting on the science and the applications, agree?? Before iPS, most people were thinking about to use hESC to do what they are doing with iPS now...and that's why the Huang was in line for Nobel likely together with Thomas and the scandal was so so huge, right? We can not undo the history, should Huang's results have been real and could be highly efficient and easily reproduced by other labs, maybe iPS would never surface...or much later...the hell knows... if we had to rank them, sure Shinya is probably above Thomas James...the same with you might not want to compare some nobel winners today V some decades ago, or compare a cell paper today with one 20 ys ago...When science itself is concerned, I would rather not rank them...They are both great scientists and their science equally deserves the highest scientific respects...there should be no difference there...
【在 n***g 的大作中提到】 : Even generally, they are in totally different level. : : Yes : not
Thompson just isolated hESCs from blastcyst and culture them. mouse ESC isolation are already succeeded. iPSC is to change nature. I think Yamanaka deserve 100 nobel prize if Thompson deserve one nobel Prize. Do you think Einstein and Zhenning Yang are in the same level?
don' thinking scandal results other one
【在 n********k 的大作中提到】 : I know what you mean and I knew that's what you would say ...but I just don' : t think one shall compare/rank them that way...Should iPS never exist, : Thomas James' contribution would be a lot a lot more impacting on the : science and the applications, agree?? Before iPS, most people were thinking : about to use hESC to do what they are doing with iPS now...and that's why : the Huang was in line for Nobel likely together with Thomas and the scandal : was so so huge, right? We can not undo the history, should Huang's results : have been real and could be highly efficient and easily reproduced by other : labs, maybe iPS would never surface...or much later...the hell knows... if : we had to rank them, sure Shinya is probably above Thomas James...the same with you might not want to compare some nobel winners today V some decades ago, or compare a cell paper today with one 20 ys ago...When science itself is concerned, I would rather not rank them...They are both great
I'll comment from my memory, some facts could be wrong but shouldn't be too far off....here it goes... was just wondering how many of you are working in the related field and knows the history...Some comments here are just so off...e.g: i would be extremely surprised that if Thomas would have a share for iPS...the reprogramming has been there for so long--it has a rich and very clear path, I am sure many many have been thinking about using several factors to reprogram to stemness...In fact there are a long list of researches/attempts before Shinya in term of reprogramming(some may be better called as transdifferentiations with many different ways--factors, small molecules, culture conditions/medium, cell fusion, nuclear cloning etc etc...From Xonpus work(Sir John Gurdon, and some other groups tried before Gurdon but take it negatively as a failure due to it is extremely rare happening...and Gurdon took it positively and improve it, then come to cell fusion, cell extracts, and dolly etc etc, and eventually the iPS... In term of Shinya, if one has read through his research records, one would know Shinya is one of the guys who were at the best position to think along the research direction and have the necessary knowledge/expertise and experimental accumulations to possibly give it a try and make it happen.... However, all that said, it was a crazy experimentation and only those stupid -like bold mind would want to give it a try....the idea was simple, but the assay, the design and the feasibility, and the extreme demand for labor could deter anyone other than those stupid-like bold mind...And I bet no one including Shinya could ever predict that it worked out so nicely and robustly, NO ONE! That's why once it was reported, it was so easy for any one to follow... With that, I would solute Shinya for their boldness and very smart experimental designs...and as far as I am concerned, a Nobel is for sure expected some time in the future...Frankly, I the student would deserve a share as well but I don't think it would ever happen....
【在 n********k 的大作中提到】 : I'll comment from my memory, some facts could be wrong but shouldn't be too : far off....here it goes... : was just wondering how many of you are working in the related field and : knows the history...Some comments here are just so off...e.g: i would be : extremely surprised that if Thomas would have a share for iPS...the : reprogramming has been there for so long--it has a rich and very clear path, : I am sure many many have been thinking about using several factors to : reprogram to stemness...In fact there are a long list of researches/attempts : before Shinya in term of reprogramming(some may be better called as : transdifferentiations with many different ways--factors, small molecules,
【在 s******r 的大作中提到】 : 那篇2006的cell是很突破,很大胆,但是说不上设计得很精巧吧。 : : I'll comment from my memory, some facts could be wrong but shouldn't be too : far off....here it goes... : was just wondering how many of you are working in the related field and : knows the history...Some comments here are just so off...e.g: i would be : extremely surprised that if Thomas would have a share for iPS...the : reprogramming has been there for so long--it has a rich and very clear path, : I am sure many many have been thinking about using several factors to : reprogram to stemness...In fact there are a long list of researches/attempts
【在 s******r 的大作中提到】 : 那篇2006的cell是很突破,很大胆,但是说不上设计得很精巧吧。 : : I'll comment from my memory, some facts could be wrong but shouldn't be too : far off....here it goes... : was just wondering how many of you are working in the related field and : knows the history...Some comments here are just so off...e.g: i would be : extremely surprised that if Thomas would have a share for iPS...the : reprogramming has been there for so long--it has a rich and very clear path, : I am sure many many have been thinking about using several factors to : reprogram to stemness...In fact there are a long list of researches/attempts
【在 n***g 的大作中提到】 : Thompson just isolated hESCs from blastcyst and culture them. mouse ESC : isolation are already succeeded. : iPSC is to change nature. : I think Yamanaka deserve 100 nobel prize if Thompson deserve one nobel Prize. : Do you think Einstein and Zhenning Yang are in the same level? : : don' : thinking : scandal : results
You're talking about 野口英世, the guy's portrait is printed on Japnese Yen bill. But he's really messy, all the "pathogens" he "discovered" are all not correct. He just had the fame when he was alive. 渡边淳一write one book about him.
这哥太牛逼了,诺贝尔提名了9次。。。 宣称发现了polio, rabies, syphilis, trachoma, and yellow fever的病原体,没一 个是对的。造假一身,还能被印到钞票上,绝对成功人士啊
Yen
【在 z*t 的大作中提到】 : You're talking about 野口英世, the guy's portrait is printed on Japnese Yen : bill. : But he's really messy, all the "pathogens" he "discovered" are all not : correct. He just had the fame when he was alive. : 渡边淳一write one book about him.
n*k
79 楼
With ur second setence, iI don't think kneed to argue with u anymore, u probably want to know more about hescs etc...btw, there was tons history about reprogramming before ips...
Prize.
【在 n***g 的大作中提到】 : Thompson just isolated hESCs from blastcyst and culture them. mouse ESC : isolation are already succeeded. : iPSC is to change nature. : I think Yamanaka deserve 100 nobel prize if Thompson deserve one nobel Prize. : Do you think Einstein and Zhenning Yang are in the same level? : : don' : thinking : scandal : results
n*k
80 楼
With ur second setence, iI don't think kneed to argue with u anymore, u probably want to know more about hescs etc...btw, there was tons history about reprogramming before ips...
Prize.
【在 n***g 的大作中提到】 : Thompson just isolated hESCs from blastcyst and culture them. mouse ESC : isolation are already succeeded. : iPSC is to change nature. : I think Yamanaka deserve 100 nobel prize if Thompson deserve one nobel Prize. : Do you think Einstein and Zhenning Yang are in the same level? : : don' : thinking : scandal : results
what.s ur point here? Btw, reprogramming takes place other than in experimental condition, there was even a germ stem cell in blood reports, likely false though, people could.t reproduce... Emt, fly germ cells, maybe 【 在 nanog (大家好) 的大作中提到: 】
O*e
83 楼
他那么崇拜iPS,你说再多也没用
【在 n********k 的大作中提到】 : what.s ur point here? Btw, reprogramming takes place other than in : experimental condition, there was even a germ stem cell in blood reports, : likely false though, people could.t reproduce... : Emt, fly germ cells, maybe 【 在 nanog (大家好) 的大作中提到: 】
n*g
84 楼
呵呵,把oncogene的发现跟iPS相提并论太过了
【在 O******e 的大作中提到】 : 他那么崇拜iPS,你说再多也没用
n*k
85 楼
I have to say u either a genius or have too high expectation...I though their assay system was decent and their design was very smart then...don.t tell me hinder sight or blabla...shiny a and his student definitely deserve q big wow...well, if they fail, it would be different...
因为我曾经在一个iPS group边上,所以比较关心iPS这方面。 在yamanaka之前,有这样的观念,用1-2个cDNA transformation,然后得到什么什么细胞系 这个本质是stable cell line和transgenic 路数 iPS 开辟的是reprogramming这个路线,在iPS之后,马上很多人就做了 transdifferentiation,依据同样的思路。 在Yamanaka之前,有些人搞过这个XXX细胞到iP,比如Stanford 胡继繁就有类似的想法,还申请了 专利,但毕竟没有成功。 当然,iPS有很多要细化的研究,比如gene deletion duplication trouble in the final iPS iPS generated from somatic cell? or from few tissue stem cells in the primary culture??? 无论如何,这个是reprogramming的事情,是的,某些伙计说的,或许弄出了生物学有 史以来最大的reprogramming 泡沫,呵呵
too
【在 n********k 的大作中提到】 : I'll comment from my memory, some facts could be wrong but shouldn't be too : far off....here it goes... : was just wondering how many of you are working in the related field and : knows the history...Some comments here are just so off...e.g: i would be : extremely surprised that if Thomas would have a share for iPS...the : reprogramming has been there for so long--it has a rich and very clear path, : I am sure many many have been thinking about using several factors to : reprogram to stemness...In fact there are a long list of researches/attempts : before Shinya in term of reprogramming(some may be better called as : transdifferentiations with many different ways--factors, small molecules,
因为我因为我边上曾经iPS group,所以我对iPS的关注恐怕仅次于iPS lab。这个还很 难说 iPS有可能来自于primary culture的及其少量的成体干细胞,转化-维持-扩增了这些细 胞。 这个疑问2009-2010年,Jaenisch实验有论文讨论过,不过我不太信。 当然,唠叨这些次级话题,不否认iPS的意义。2009年4月,nature上一期两论文, cells still maintain the phenotype even inserted exogeneous cDNAs were genetically removed. I was so convinced.
Exactly, I am sure many had been thinking along the line and some were trying...it is obvious if one reads literature...I am not even working on iPS, but I am generally interested in epigenetics...that's why I know a bit of the history...As for iPS application, as of now, it is still hype in term of clinical stuff, tons of road blocks ahead. However, I do think it could offer some revolutionary avenues in term of basic research, disease research/modeling and drug discover etc etc...time will tell whether it will live up to it...in this aspect, I disagree with peoblem's point, I think it could be more impacting than RNAi stuff..(However, if RNAi can be very efficient in clinics, then maybe RNAi would be a most important discovery ever...only time knows)... Finally, I think Nanog thinks much too highly of the iPS while Fugu etc could be a bit more generous/positive...
细胞系 法,还申请了 final iPS
【在 i*****g 的大作中提到】 : 因为我曾经在一个iPS group边上,所以比较关心iPS这方面。 : 在yamanaka之前,有这样的观念,用1-2个cDNA transformation,然后得到什么什么细胞系 : 这个本质是stable cell line和transgenic 路数 : iPS 开辟的是reprogramming这个路线,在iPS之后,马上很多人就做了 : transdifferentiation,依据同样的思路。 : 在Yamanaka之前,有些人搞过这个XXX细胞到iP,比如Stanford 胡继繁就有类似的想法,还申请了 : 专利,但毕竟没有成功。 : 当然,iPS有很多要细化的研究,比如gene deletion duplication trouble in the final iPS : iPS generated from somatic cell? or from few tissue stem cells in the : primary culture???
【在 n********k 的大作中提到】 : Exactly, I am sure many had been thinking along the line and some were : trying...it is obvious if one reads literature...I am not even working on : iPS, but I am generally interested in epigenetics...that's why I know a bit : of the history...As for iPS application, as of now, it is still hype in : term of clinical stuff, tons of road blocks ahead. However, I do think it : could offer some revolutionary avenues in term of basic research, disease : research/modeling and drug discover etc etc...time will tell whether it will : live up to it...in this aspect, I disagree with peoblem's point, I think it : could be more impacting than RNAi stuff..(However, if RNAi can be very : efficient in clinics, then maybe RNAi would be a most important discovery
【在 z*t 的大作中提到】 : You're talking about 野口英世, the guy's portrait is printed on Japnese Yen : bill. : But he's really messy, all the "pathogens" he "discovered" are all not : correct. He just had the fame when he was alive. : 渡边淳一write one book about him.
s*t
130 楼
他没有造假吧?只是水平不够,弄错了。后来他终于意识到自己的发现都是错的,最后 在负罪感和绝望中死去
【在 a********k 的大作中提到】 : 这哥太牛逼了,诺贝尔提名了9次。。。 : 宣称发现了polio, rabies, syphilis, trachoma, and yellow fever的病原体,没一 : 个是对的。造假一身,还能被印到钞票上,绝对成功人士啊 : : Yen
I have to say u either a genius or have too high expectation...I though their assay system was decent and their design was very smart then...don.t tell me hinder sight or blabla...shiny a and his student definitely deserve q big wow...well, if they fail, it would be different...
【在 n********k 的大作中提到】 : I have to say u either a genius or have too high expectation...I though : their assay system was decent and their design was very smart then...don.t : tell me hinder sight or blabla...shiny a and his student definitely deserve : q big wow...well, if they fail, it would be different...
【在 s******r 的大作中提到】 : 那我们定义不同,decent,不能算多精巧, : Yamanaka主要使用了一个knock-in的reporter,这也是常规手段, : 病毒感染也是常规手段。 : 他的想法很新很大胆,实验也很严密,设计上也就是常规吧, : 两位称赞他很精巧的,能不能稍微具体一点。 : : I have to say u either a genius or have too high expectation...I though : their assay system was decent and their design was very smart then...don.t : tell me hinder sight or blabla...shiny a and his student definitely deserve : q big wow...well, if they fail, it would be different...
alright, u corned me:)) so here is my take: The entire system can work out was really amazing and it must be a decent/smart one, bold too and clearly luck was with them... The highlight I personally think was to pool 24 factors and then do 24-1 to reduce the sheer demand for labor. Luckily it worked out, it could be a trash/disastrous design---when one pool things together, God knows what may happen: either needs to be sequential, or some may be antagonists...Anyway, you can say, that's very simple/obvious but I think it was smart and beautiful--a smart design meets serendipity! BTW, it is kind of amusing to hear "如果只用OCT4,SOX2,Nanog他也会成功,KLF4 也不是必需的,只是提高了效率"...is this called hinder sighted? If people had know neural stem cells are one of the easiest to do it and only takes a single factor, people could have performed a screening one cDNA for all the 20-40k genes at a time, right? In a way, people should have thought about that since neural crest cells...But the problem is who is gonna bet his entire career and lab resources on something no one knows the answer...I am sure, many (at least I would have) would spend their 5/10 years or more and work their asses off if they have known four factors could work and they would be the first one to get there....Sounds like we shall communicate with God more:))))
The people working in ESC field are mostly from animal reproduction field and they don't have good knowledge in genetic screening before 2006. So Yamanaka's screening strategy is very outstanding in ESC field but maybe not so good in drosophila or C-elegants field.
【在 n********k 的大作中提到】 : Really? what are u talking about, I am so lost with you:))))
n*k
151 楼
Come on, I don't think the second part is the case...of course they know, I think it is more about the feasibility and practical or not...Naive as me, when I applied to Kevin Eggan's lab for postdoc ys ago, I (as a small and ambitious piece of my letter) proposed to use nuclear cloning to screen for reprogramming factors...Now, I knew why he didn't even bother to respond to me...
maybe
【在 n***g 的大作中提到】 : The people working in ESC field are mostly from animal reproduction field : and they don't have good knowledge in genetic screening before 2006. : So Yamanaka's screening strategy is very outstanding in ESC field but maybe : not so good in drosophila or C-elegants field.
Those two labs and possibly other labs started working on iPS at approximately the same time and at least Yamanaka and Thomson group were using the same strategy. Yamanaka worked with mouse cells, which grow much faster. Thomson worked with human cells, which grow much slower. Although it looks like everybody was copying Yamanaka, the truth is he just got a faster system and published first. The sad thing is that is all that matters ...Also, without Thomson lab's work on growth conditions, how can other groups derive iPS so easily?
Prize.
【在 n***g 的大作中提到】 : Thompson just isolated hESCs from blastcyst and culture them. mouse ESC : isolation are already succeeded. : iPSC is to change nature. : I think Yamanaka deserve 100 nobel prize if Thompson deserve one nobel Prize. : Do you think Einstein and Zhenning Yang are in the same level? : : don' : thinking : scandal : results
t*d
164 楼
fairly said.
it matters
【在 s*******m 的大作中提到】 : Those two labs and possibly other labs started working on iPS at : approximately the same time and at least Yamanaka and Thomson group were : using the same strategy. Yamanaka worked with mouse cells, which grow much : faster. Thomson worked with human cells, which grow much slower. Although it : looks like everybody was copying Yamanaka, the truth is he just got a : faster system and published first. The sad thing is that is all that matters : ...Also, without Thomson lab's work on growth conditions, how can other : groups derive iPS so easily? : : Prize.
l*d
165 楼
it matters 这一点我完全不同意,Yamanaka不仅第一个做出mouse ips,而且Yamanaka还和Thomson 同时做出human ips,所以你的论点"Those two labs and possibly other labs started working on iPS at approximately the same time.....Yamanaka worked with mouse cells, which grow much faster. Thomson worked with human cells, which grow much slower"是很难成立的。两个人都作了human ips,而且同时出来的, 怎么能用所谓大家选择faster或者slower system来解释Yamanaka更早做出ips呢?基于 这个事实,很明显Yamanaka是第一个原创者,至于Thomson,他对human ES的贡献的确不 能抹杀,但也绝不能一味拔高他在ips上的功劳,这个功劳怎么也是Yamanaka的。
【在 s*******m 的大作中提到】 : Those two labs and possibly other labs started working on iPS at : approximately the same time and at least Yamanaka and Thomson group were : using the same strategy. Yamanaka worked with mouse cells, which grow much : faster. Thomson worked with human cells, which grow much slower. Although it : looks like everybody was copying Yamanaka, the truth is he just got a : faster system and published first. The sad thing is that is all that matters : ...Also, without Thomson lab's work on growth conditions, how can other : groups derive iPS so easily? : : Prize.
I*a
166 楼
差点错了里面得八卦,
s*m
167 楼
The reason I said it is sad that publishing first is all that matters is exactly what you said below. People always believed that Thomson copied whatever Yamanaka did because Yamanaka published mouse iPS first and human iPS strategy is pretty much the same. If you know the time line of mouse iPS (~15days) and human iPS (~30-40days) process, you would understand if you started your screen in human cells, it would take much longer to narrow down the final factors. Yamanaka, to his credit, used a faster system to do the screen and sure it took much shorter to repeat the same experiment in human. Also, I would find it really hard to believe that Yamanaka did not start the same work in human right after he got the preliminary result in mouse and long before he published his work in mouse iPS. The fact he barely published at the same time Thomson did (see how fast his paper got accepted), also suggested to me Thomson started the work long before Yamanaka's mouse iPS publication. What I said above is not to diminish Yamanaka's contribution. I am just trying to say that he was not the only one who had the idea and got it to work. It is understandable and perfectly fine that most people believe that Yamanaka is the one who originated the idea. However, for people on this board, who work in life sciences field, it is also important to know sometimes, that only means someone published first.
Thomson
【在 l***d 的大作中提到】 : : it : matters : 这一点我完全不同意,Yamanaka不仅第一个做出mouse ips,而且Yamanaka还和Thomson : 同时做出human ips,所以你的论点"Those two labs and possibly other labs : started working on iPS at approximately the same time.....Yamanaka worked : with mouse cells, which grow much faster. Thomson worked with human cells, : which grow much slower"是很难成立的。两个人都作了human ips,而且同时出来的, : 怎么能用所谓大家选择faster或者slower system来解释Yamanaka更早做出ips呢?基于 : 这个事实,很明显Yamanaka是第一个原创者,至于Thomson,他对human ES的贡献的确不
n*k
168 楼
I would agree with you that many may have the ideas...however, either it would work or how and what facts etc...A question for you: do you think Yamanaka's mouse work help TJ's human work substantially, except using a faster system?...that said, I highly both Yu and TJ for their exceptional work and contribution and in no means I am trying to downplay that... Mouse work: Induction of Pluripotent Stem Cells from Mouse Embryonic and Adult Fibroblast Cultures by Defined Factors Kazutoshi Takahashi1, Shinya Yamanaka1, 2, , Received 24 April 2006; revised 18 June 2006; Accepted 20 July 2006. Published online: August 10, 2006. Available online 10 August 2006. And also, they reported their results at the ISSC meeting about half year earlier(?)... Human work: Yu's work: Received for publication 9 October 2007. Accepted for publication 14 November 2007. Shinya's work: Received 29 October 2007; revised 7 November 2007; Accepted 12 November 2007 . Don't forget the same times, Shinya's group are publishing at least one more on the same topic. Also, for a comparison, the following study is clearly after shinya...and see how fast the group has pulled out the study... Directly Reprogrammed Fibroblasts Show Global Epigenetic Remodeling and Widespread Tissue Contribution Received 31 March 2007; revised 4 May 2007; Accepted 14 May 2007.
iPS down the human. the
【在 s*******m 的大作中提到】 : The reason I said it is sad that publishing first is all that matters is : exactly what you said below. People always believed that Thomson copied : whatever Yamanaka did because Yamanaka published mouse iPS first and human : iPS strategy is pretty much the same. If you know the time line of mouse iPS : (~15days) and human iPS (~30-40days) process, you would understand if you : started your screen in human cells, it would take much longer to narrow down : the final factors. Yamanaka, to his credit, used a faster system to do the : screen and sure it took much shorter to repeat the same experiment in human. : Also, I would find it really hard to believe that Yamanaka did not start the : same work in human right after he got the preliminary result in mouse and
s*m
169 楼
Fair enough. All I wanted to say is that Yamanaka is not the godfather of iPS. It is fine to think that way for people working outside the field. But for people within this field, it is good to think one step further. "A question for you: do you think Yamanaka's mouse work help TJ's human work substantially, except using a faster system?"----Maybe, maybe not. This is something only the authors would know.
【在 n********k 的大作中提到】 : I would agree with you that many may have the ideas...however, either it : would work or how and what facts etc...A question for you: do you think : Yamanaka's mouse work help TJ's human work substantially, except using a : faster system?...that said, I highly both Yu and TJ for their exceptional : work and contribution and in no means I am trying to downplay that... : Mouse work: : Induction of Pluripotent Stem Cells from Mouse Embryonic and Adult : Fibroblast Cultures by Defined Factors : Kazutoshi Takahashi1, Shinya Yamanaka1, 2, , : Received 24 April 2006; revised 18 June 2006; Accepted 20 July 2006.