stap cell

Note on policy on commenting and how it relates to STAP stem cell situation

Haruko-Obokata

It is important for the stem cell field to gain clarity on STAP stem cells. For this reason it is reasonable and at times helpful to critically discuss the data, past findings, concerns about elements of publications, and such. However, it is not helpful and is in fact against the policy of this blog to …

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

PH-STAP-test

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

stap-stem-cells-fetus-300x2251

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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Do you believe in STAP stem cells new poll: week two

STAP-cells-300x300

I’m interested in tracking potential dynamic changes in people’s view of STAP stem cells. So about once a week I’m going to start a new poll on the extent to which you readers believe in them. Below is week two’s STAP poll. So if you’ve voted in the previous poll (which garnered more than 500 responses) you …

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

in-a-pickle

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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Big patent & IP implications or even ‘war’ from STAP stem cells?

A new article in the major Japanese newspaper, Asahi Shimbun, just came out suggest major intellectual property (IP) and patent issues related to stem cells including the new stress induced STAP stem cells. The piece is entitled provocatively enough “Global patent war looms with epoch-making discovery of STAP cells“. That’s strong language. The article begins …

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STAP stem cell poll: interesting results & regional differences

I’ve been doing a poll on the extent to which people believe or do not believe in the stress-induced STAP stem cells reported in Nature last week. In just a few days of poll, we’ve got almost 400 respondents, which is great. It’s still not a scientific poll, but the results (above) are interesting for …

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Interview with Charles Vacanti on STAP Cells: Link to Spore Stem Cells & More

Obokata-FIg.-2a

The recent publication of two Nature papers by a team in part led by Dr. Charles Vacanti on acid treatment produced stem cells (so-called STAP stem cells) has been a blockbuster story in the stem cell field and has grabbed major global media attention as well. For background my review of the paper here and more thoughts here. Many …

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