Scientists Grow First Fully Developed Human Eggs in Laboratory
For the first time ever, scientists have succeeded in growing human eggs from the earliest stages to full maturity in a laboratory.
Before now, scientists had only succeeded in doing so with the eggs of mice, maturing those eggs to the stage where they produced living babies. They had also grown human eggs from a later stage of development.
Scientists at two research hospitals in Edinburgh, Scotland and the Center for Human Reproduction in New York completed this latest experiment. They published the results of their research in the journal Molecular Human Reproduction in early February.
They said this research could one day help in developing medicines and new treatments for people who are unable to produce children.
Normally, microscopic eggs develop in the part of the female reproductive system called ovaries. However, this is the first time human eggs have been developed outside the human body from their earliest stage to full maturity.
Evelyn Telfer is a co-leader of the research. She told the Reuters news service, "Being able to fully develop human eggs in the laboratory could widen the scope of available fertility treatments. We are now working on optimizing the conditions that support egg development in this way and studying how healthy they are."
Independent experts not directly involved in this work supported it by calling it important. But they also warned that there is much more to do before laboratory-grown human eggs could be safely made ready for reproduction with sperm.
Ali Abbara is a medical expert at Imperial College London. He said this latest research suggests it may be possible to fully combine human eggs and sperm outside the body in the future.
"But the technology remains at an early stage," he added. "And much more work is needed to make sure that the technique is safe and optimized before we ascertain whether these eggs remain normal during the process, and can...form embryos that could lead to healthy babies."
Darren Griffin is a genetics professor at Kent University in the United Kingdom. He called the work a surprising technical success. If success and safety rates were improved, it could help future cancer patients receiving chemotherapy treatment protect their fertility, said Griffin. It could also improve fertility treatments, and deepen scientific understanding of the biology of the earliest stages of human life.
I'm Pete Musto.
1.lead to 导致
A lack of prudence may lead to financial problems.
2.fertility treatments 受孕治疗
She conceived the babies following fertility treatments, after suffering a number of miscarriages.
3.Before now 过去；从前
Something ought to have been done before now.
4.human eggs 人类卵子
They stressed they had made no attempt to fertilise human eggs with the sperm.
5.For the first time ever, scientists have succeeded in growing human eggs from the earliest stages to full maturity in a laboratory.
For the first time ever 有史以来第一次
For the first time ever, the halls were not fully booked
And I felt this fear for the first time ever.
6.He said this latest research suggests it may be possible to fully combine human eggs and sperm outside the body in the future.
in the future 未来
We expect better of you in the future.
In the future the machines will need spare parts and maintenance.
此前，科学家们只在老鼠卵子中完成了这一实验，培育老鼠卵子直至其可以孕育 。科学家们在后期阶段也曾培育过人类卵子 。
苏格兰爱丁堡市的两家研究医院与纽约人类生殖中心的科学家们合力完成了这项最新实验 。他们将研究成果发表在2月初的《人类生殖》杂志上 。
通常，微型卵子在雌性生殖系统的卵巢中孕育 。然而，这是人类卵子首次在人体外从最初阶段发育至完全成熟 。
伊芙琳·特尔弗（Evelyn Telfer）是这项研究的联合负责人 。她对路透社表示：“在实验室培育出成熟的人类卵子扩大了现有不孕不育治疗的范围 。我们正在努力优化这种支持卵子发育的条件并研究卵子的健康程度 。”
未直接参与这项研究的独立专家对这项研究十分支持，称其非常重要 。但他们也警告称，在实验室培育的人类卵子可安全地与精子繁殖之前，还有很多工作需要完成 。
艾力·阿巴拉（Ali Abbara）是伦敦帝国学院的医学专家 。他说，这项最新研究表明，未来有可能实现人类卵子和精子在体外结合 。
他补充说，“但这项技术仍处于初期阶段 。”“我们还需要做更多工作来确保这项技术的安全和完善，这样才能确保卵子在发育过程中能否保持正常以及形成可孕育健康生命的胚胎 。”
达伦·格里芬（Darren Griffin）是英国肯特大学的遗传学教授 。他称，这是一项令人称奇的技术成就 。如果成功率和安全率得到保障，该技术可帮助未来接受化疗的癌症患者保护自己的生育能力 。该技术还可以改善不孕不育疗法，深化人们对人类生命最早期阶段生物学的科学认知 。