Search Results for: stem cell

A correction to a correction for stem cell researcher Jacob Hanna

A correction to a correction is the latest problem for highly cited researcher Jacob Hanna. The stem cell scientist — whose high-profile work has received scrutiny over the past year — has amended an earlier correction notice after a reader spotted an inadvertent “mistake.” We reported on the original correction, to the 2009 Cell Stem Cell paper “Metastable Pluripotent States in NOD-Mouse-Derived ESCs,” in July. The … Continue reading A correction to a correction for stem cell researcher Jacob Hanna

Paper on natural ways to fight cancer stem cells nixed for plagiarism

Expert Opinion on Therapeutic Patents has retracted a 2015 review article about natural fighters of cancer stem cells for reproducing “content to a high degree of similarity without appropriate attribution or acknowledgement” from a handful of papers. Although the editor and publisher pulled the paper, they did so with the cooperation of the authors, according to … Continue reading Paper on natural ways to fight cancer stem cells nixed for plagiarism

Judge dismisses cardiac stem cell researchers’ lawsuit against Harvard

A Massachusetts judge has dismissed a lawsuit by researchers who argued that an investigation by Harvard cost them job offers. Last year, Piero Anversa, a stem cell researcher at the Brigham & Women’s Hospital, and a colleague, Annarosa Leri, sued Harvard over an investigation into their work that they claim damaged their reputations:

JCI retracts paper by stem cell biologist Jacob Hanna, citing “figure irregularities”

The Journal of Clinical Investigation has retracted a 2004 paper by Jacob Hanna, a highly cited stem cell researcher in Israel whose work has been dogged by questions about its validity. Questions about the work, and other articles on which Hanna was an author, were raised on PubPeer last November. This is his first retraction. … Continue reading JCI retracts paper by stem cell biologist Jacob Hanna, citing “figure irregularities”

Are retractions more frequent in stem cell research?

There are a number of fields that seem to punch above their weight on Retraction Watch: Anesthesiology, home to the world record holder (and runner-up), and psychology, home to Diederik Stapel and others. But the red-hot field of stem cell research is another that makes frequent appearances, last year’s STAP controversy being particularly prominent. There’s … Continue reading Are retractions more frequent in stem cell research?

Bad image prompts correction of Harvard-Brigham stem cell paper by Anversa

A group of Harvard stem cell researchers who already have one retraction and an expression of concern now have a correction. This one’s in Circulation Research, and it involves an image that previously had been flagged as suspicious in our comments. The group is led by Piero Anversa, who as we reported last year is … Continue reading Bad image prompts correction of Harvard-Brigham stem cell paper by Anversa

Stem cell researcher Jacob Hanna responds to criticism

Over the past few months, there has been a great deal of criticism of the work of stem cell researcher Jacob Hanna, especially on PubPeer. Now, Hanna has responded in the comments of the PubPeer entries for a number of papers. He has also posted a number of PDFs, including his PhD thesis, and correspondence with scientists … Continue reading Stem cell researcher Jacob Hanna responds to criticism

Stem cell study retraction produces useless notice

We don’t have much to go on here, for a retraction from the International Journal of Stem Cells.  Here’s what we do know: Dental researchers at several universities in Egypt, including Cairo University, Future University, and Misr University published a paper together. According to the article, they gave dogs oral ulcers and then injected the ulcers … Continue reading Stem cell study retraction produces useless notice