Retraction Watch

Tracking retractions as a window into the scientific process

Archive for the ‘Stem Cell Res and Ther’ Category

Author of retracted gene editing paper alleges “bullying” by former PI

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In the fall of 2015, out-of-work stem cell biologist Mavi Camarasa decided she had waited long enough. It had been three years since she and a colleague were, best they could tell, the first to successfully correct the most common cystic fibrosis mutation in stem cells derived from a patient.

But her former lab director, Daniel Bachiller, had blocked her from writing even a short report, she told Retraction Watch:

He said we are not submitting at this time, wait until [the project is] complete. “Wait, wait,” is the only answer I’d had from him ever.

Though she’d left the Spanish regenerative medicine lab in 2013 to take care of an ailing parent and had mostly been scooped by another group in April of that year, Camarasa thought she still might be able to get something out of the project. She hatched a plan to make him an offer he couldn’t refuse — an already accepted manuscript where all he would have to do is attach his name at the last minute.

But this story didn’t turn out exactly how she’d hoped — and illustrates how the pressure to publish can affect researchers at different levels in the lab.

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Stem cell researchers fix two papers following PubPeer comments

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Screen Shot 2016-04-13 at 5.56.09 PMA pair of stem cell researchers have earned two corrections, the result of images that were mislabeled, distorted, or compiled incorrectly, according to the notices.

Kang Cheng prepared the gels when he was a research fellow in last author Sanjeev Gupta‘s lab at the Albert Einstein College of Medicine. Gupta told us he reviewed the original gels, and the errors didn’t affect the conclusions in the papers, which were reproducible. He noted he believes the problems are the result of honest mistakes:

The errors did not confer any benefits whatsoever either for the papers or for Dr. Cheng.

On PubPeer, commenters have raised questions about the now corrected papers — along with several others on which Gupta is the senior author, but Cheng is not a co-author.

Edward Burns, research integrity officer at Einstein, told us that the medical school looked into an allegation of misconduct against Gupta:  

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