Archive by category | stem cells

Investigator of controversial stem-cell study resigns

The head of a Japanese committee investigating claims that stem cells could be made using mechanical stress or acid resigned from the committee today over anonymous allegations that at least one of his own papers contained problematic data. He says he resigned out of concern that the incident could complicate the current investigation.  Read more

Former NIH stem-cell chief joins New York foundation

Stem-cell biologist Mahendra Rao, who resigned last week as director of the US National Institutes of Health’s Center for Regenerative Medicine (CRM), has a new job. On April 9, he was appointed vice-president for regenerative medicine at the New York Stem Cell Foundation (NYSCF), a non-profit organization that funds embryonic stem cell research.  Read more

Acid-bath stem-cell scientist apologizes and appeals

Haruko Obokata, the Japanese scientist at the centre of a controversy over studies purporting to turn mature cells to stem cells simply by bathing them in acid or subjecting them to mechanical stress, today apologized for her errors in the work.  Read more

Call for acid-bath stem-cell paper to be retracted

Less than 40 days after a team led by Haruko Obokata of the RIKEN Center for Developmental Biology in Kobe, Japan, presented two stunning papers claiming a method of using a simple acid-bath method to reprogramme mature mammalian cells back to an embryonic state – so called STAP cells – researchers in Japan, including one of the paper’s co-authors, are calling for them to be retracted.  Read more

South Korean Supreme Court confirms Hwang’s sentence

The South Korean Supreme Court has upheld a 2010 ruling which sentences disgraced cloning expert Woo Suk Hwang to a one-and-a-half-year prison term for embezzlement and violation of the country’s bioethics law. The term comes with a two-year probation, however, and if Hwang does not commit a crime during that period, he will not have to serve jail time at all. This is the final judgment on a trial that started in 2006 and reached its first verdict in 2009 after 43 hearings involving 60 witnesses.  Read more