Sunday Times 2
Scientists ‘reset’ stem cells to study start of human development
View(s):LONDON (Reuters) – British and Japanese scientists have managed to “reset” human stem cells to their earliest state, opening up a new realm of research into the start of human development and potentially life-saving regenerative medicines.
Stem cells viewed on a screen at the University of Connecticut's Stem Cell Institute in Farmington (AFP)
In work described by one independent expert as “a major step forward”, the scientists said theyhad successfully rebooted pluripotent stem cells so they were equivalent to those of a 7 to 10-day old embryo, before it implants in the womb.
By studying the reset cells, they said they hoped they would now be able to learn more about embryo development, and how it can go wrong and cause miscarriage and developmental disorders. “These cells may represent the real starting point for formation of tissues in the human embryo,” said Austin Smith, director of the Britain’s Cambridge Stem Cell Institute, who co-led the research. “We hope that in time they will allow us to unlock the fundamental biology of early development, which is impossible to study directly in people,” he added.
Experts say that by helping to regenerate tissue, stem cell science could offer new ways of treating conditions for which there are currently no cures – including heart and eye diseases, Parkinson’s and stroke.