Scientists Have Successfully Grown Human Eggs In A Lab

Scientists Have Successfully Grown Human Eggs In A Lab

Scientists Have Successfully Grown Human Eggs In A Lab

The team say the technique could lead to new ways of preserving the fertility of children having cancer treatment. Saitou also notes that cells called polar bodies that pinch off from an egg during development are typically small because they don't receive as much cytoplasm as the egg itself, but the polar bodies in the study were unusually large.

Although more work is needed, the breakthrough finding has the potential to improve fertility treatments.

Women are born with immature eggs that only develop after puberty.

After decades of research, scientists can now grow eggs to maturity outside of the ovary, the report said. It requires carefully controlling conditions including oxygen levels, hormones and proteins that simulate growth, with only 10 percent of eggs reaching maturity.

The scientists from Britain and the United States published their result in the journal Molecular Human Reproduction on Friday. The technique will also need further development to boost efficiency - out of dozens of eggs harvested, only a few could be pushed to full maturity during the study.

Scientists will now focus on examining how healthy the eggs are and whether they can be fertilised.

Professor Evelyn Telfer, lead researcher on the project, told the BBC: "It's very exciting to obtain proof of principle that it's possible to reach this stage in human tissue. But that has to be tempered by the whole lot of work needed to improve the culture conditions and test the quality of the oocytes [eggs]".

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Telfer adds that the new approach could also be useful for women whose eggs fail to fully develop in the body and, more fundamentally, will help boost our understanding of the mechanisms underpinning the development of human eggs.

Modern medical technology allows mature eggs to be extracted and frozen for years, until a patient wants to use them for an IVF procedure. Then, in 2015, a group of researchers at Northwestern University in Chicago created mature eggs from these partially developed follicles.

Darren Griffin, professor of genetics at the University of Kent, says: The main "selling point" of this paper is that, in the past, the authors have been successful in developing 2 stages of the process through which ovary material can be taken and an egg ready for fertilisation can be produced.

Chemotherapy and radiotherapy risks making you sterile.

Women facing infertility have been given new hope after British scientists managed to grow human eggs in a laboratory for the first time.

But making eggs in the laboratory is considered a safer option.

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