Stem cells likely to be safe for use in regenerative medicine, study confirms

Cambridge researchers have found the strongest evidence to date that human pluripotent stem cells – cells that can give rise to all tissues of the body – will develop normally once transplanted into an embryo. The findings, published in the journal Cell Stem Cell, could have important implications for regenerative medicine.

 

Our study provides strong evidence to suggest that human stem cells will develop in a normal – and importantly, safe – way. This could be the news that the field of regenerative medicine has been waiting for.
   - Roger Pedersen









Human pluripotent stem cells for use in regenerative medicine or biomedical research come from two sources: embryonic stem cells, derived from fertilised egg cells discarded from IVF procedures; and induced pluripotent stem cells, where skin cells are ‘reset’ to their original, pluripotent form. They are seen as having promising therapeutic uses in regenerative medicine to treat devastating conditions that affect various organs and tissues, particularly those that have poor regenerative capacity, such as the heart, brain and pancreas.

However, some scientists have been concerned that the cells may not incorporate properly into the body and hence not proliferate or distribute themselves as intended, resulting in tumours. Today’s study suggests that this will not be the case and that stem cells, when transplanted appropriately, are likely to be safe for use in regenerative medicine.

Professor Roger Pedersen from the Anne McLaren Laboratory for Regenerative Medicine at the University of Cambridge, commenting on co-author Victoria Mascetti’s research findings, says: “Our study provides strong evidence to suggest that human stem cells will develop in a normal – and importantly, safe – way. This could be the news that the field of regenerative medicine has been waiting for.”


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Image: Mouse embryo yolk sac with human pluripotent stem cells (green) incorporated
Credit: Roger Pederson/Victoria Mascetti

Reproduced courtesy of the University of Cambridge
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