US News Human eggs fully grown in lab for first time

06:44  09 february  2018
06:44  09 february  2018 Source:   Sky News

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  Human eggs fully grown in lab for first time © Sky News

Human eggs have been fully grown in a laboratory setting for the first time, potentially paving the way for new fertility treatments.

The eggs were removed from ovary tissue as early as possible and grown in a laboratory up until the point they were ready for fertilisation, according to research published in the journal Molecular Human Reproduction.

If the eggs were healthy it could allow women who were undergoing medical treatments that damage their eggs, such as chemotherapy, to store and save them for future fertilisation.

However, scientists have cast doubts on whether the study proved that the eggs were fully grown in good health.

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For the first time , scientists have managed to grow mature human eggs from immature cells in the lab , a The traditional way to preserve a female cancer patient’s fertility is to surgically remove fully mature eggs from her ovary, fertilize the eggs immediately in the lab , and freeze the resulting embryos.

  Human eggs fully grown in lab for first time © Sky News

Lead researcher Professor Evelyn Telfer, of the University of Edinburgh's school of biological sciences, said: "Being able to fully develop human eggs in the lab could widen the scope of available fertility treatments.

"We are now working on optimising the conditions that support egg development in this way and studying how healthy they are. We also hope to find out, subject to regulatory approval, whether they can be fertilised."

However, not all onlookers agree that the research is so promising.

  Human eggs fully grown in lab for first time © Sky News

Professor Simon Fishel of the CARE Fertility Group said: "The press release is perhaps more encouraging than the science or the authors promulgate.

"As has been seen in many attempts to develop human gametes in vitro over the years, what looks normal may not indeed be what we call 'developmentally competent', or indeed healthy."

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Professor Daniel Brison, the scientific director of the Department of Reproductive Medicine at University of Manchester, said that it was "an exciting breakthrough".

He added: "As the authors acknowledge, there is much more important research still to do, but this could pave the way for fertility preservation in women and girls with a wider variety of cancers than is possible using existing methods."

The study, carried out by the Royal Infirmary Edinburgh, the Centre for Human Reproduction in New York and the Royal Hospital for Sick Children in Edinburgh, was supported by the Medical Research Council.

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