July 15, 2020

The Niche

Knoepfler lab stem cell blog

stem cell retraction

4 min read

What’s the deal with lung stem cells and stem cells for lungs? For a long time researchers found that stem cells were elusive in adult lungs. There was debate about whether they even existed, but it now seems fairly established that there are some of the little guys in there. Just because one of the early papers on purported human lung stem cells came from Piero Anversa and has been retracted doesn’t mean these stem cell cells don’t exist at all. Other groups have reported …Read More

3 min read

In a stunner, Harvard and Brigham & Women’s Hospital reportedly have jointly called for the retraction of 31 papers on heart stem cell research authored by embattled heart stem cell researcher Piero Anversa. The scoop on this by STAT/Retraction Watch written by Ivan Oransky and Adam Marcus gives further details on this mess and past travails of Anversa. He was the prime proponent of the idea of endogenous heart stem cells in adults, but things have gone south since his prime time as a …Read More

3 min read

A researcher working at Kyoto University has reportedly engaged in misconduct leading to an institutional request for retraction of a paper from the journal Stem Cell Reports. The paper in question appears to have rather large-scale problems: “Kohei Yamamizu, a specially appointed assistant professor at the university’s Center for iPS Cell Research and Application, falsified all six main figures in the paper that claimed he had succeeded in generating a brain structure in vitro using iPS cells, according to Kyoto University.” The Center for iPS Cell …Read More

3 min read

STAP is back? Really? No, I don’t believe so, but there’s an interesting development and twist on the STAP cell front. Just a few days ago on January 4, 2017 Dr. Charles Vacanti, the originator of the STAP cells concept, submitted a declaration to the USPTO affirming the belief that STAP cells are real and requesting that the patent office allow the rejected STAP patent application to be reconsidered. I find a number of aspects of this development notable: The declaration says they have generated new data …Read More