Search Results for: vacanti

STAP stem cell update 2.0: method isn’t working so far, investigations & more

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Today may be a turning point in the STAP stem cell story. Nature itself opened up in a newsy piece about the events that have occurred in the past couple weeks since they published two related papers on acid/other stimulus-induced powerful pluripotent or totipotent stem cells (aka STAP stem cells). Update: Science also published a …

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STAP stem cell update: more prelim data, missing data, & 2011 paper problems

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What’s the latest on the now two-week-old STAP stem cell saga? More preliminary data from around the world.  People continue to deposit their data into our crowdsourcing page with 8 reports so far and I know some of them are from top-notch labs. Only one of them is even slightly encouraging with a report of …

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Latest developments and scoops on STAP stem cells

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Acid-induced pluripotent or even totipotent stem cells, called STAP stem cells, have thrown the stem cell field for a bit of a loop. For more background see my interview with the key public face of STAP, Dr. Charles Vacanti, as well as my review of their paper, my top 5 reasons for skepticism, and some other thoughts. Do you believe in …

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In a pickle over STAP stem cells: main reasons for skepticism

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If you take an ordinary cucumber and soak it in a mild acid solution of vinegar for a few weeks you get a pickle, which is where we find STAP stem cells. Recently, some scientists reported in Nature that if you take ordinary cells and soak them in a mild acid solution for 30 minutes, …

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Review of Obokata STAP cells Nature papers

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In two Nature papers (here and here) published today researchers report the astounding finding of reprogramming differentiated cells back to a pluripotent or even totipotent state simply by exposing the cells to extreme environmental stress, creating cells they called STAP cells. Update: see more thoughts on STAP stem cells here. No genes. No proteins. No …

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Interviews

I’ve been fortunate to interview some of the greats in the stem cell field for this blog and host debates between key players. Please note that just because I have interviewed folks does not mean I agree with them or that they agree with me. The point is to establish dialogue on key issues. As …

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