英語資源頻道為大家整理的雙語新聞閱讀：美國科學家發(fā)現(xiàn)永葆青春的基因，供大家閱讀參考。
'Fountain of youth' gene is discovered - and scientists say it could help heal wounds
A ‘fountain of youth gene’ has been identified by scientists.Experts have long been puzzled as to why young animals recover from injuries more quickly than adults. The gene, Lin28a, is highly active in unborn children, but does less and less with age.
In tests on mice, it quickened the healing of wounds and sped up regrowth after a patch of fur was shaved.
It also helped repair tissues in the ear after they were injured.Lin28a achieved all of these effects by increasing the production of several metabolicenzymes and enhancing metabolic processes that are normally more active in embryos.
The Harvard Medical School scientists hope that waking the gene up in the adult body could speed up the healing of wounds after operations.
Researcher George Daley said it may be possible to produce a drug that has the same effect as the gene.
He added: ‘It sounds like science fiction but Lin28a could be part of a healing cocktail that gives adults the superior tissue repair seen in juvenile animals.’
He said: ‘Why some animals can fully regenerate organs when others cannot is a longstanding mystery of biology.
‘Our studies support the concept that mammalian tissue repair can be substantially improved by engineering the reactivation of genes that regulate juvenile developmental stages.’
The research is published in the journal Cell.
據(jù)英國《每日郵報》報道，美國哈佛大學科研人員近日宣布，他們發(fā)現(xiàn)了能使人保持年輕的基因。這組名為Lin28a的基因在未出生的胎兒身上非常活躍，但隨著人類年齡的增長，其功能開始逐漸退化。此前，科學家一直無法解釋為什么年輕的動物在受傷后會比成年的動物恢復(fù)得快。在一組實驗中，科學家把小白鼠的皮毛剃光，然后發(fā)現(xiàn)Lin28a能夠加快皮毛重生的速度。在另一組實驗中，科學家發(fā)現(xiàn)Lin28a能夠幫助小白鼠受傷的皮膚組織加速復(fù)原。研究發(fā)現(xiàn)，Lin28a基因能產(chǎn)生多種代謝酶，加快新陳代謝的速度，實現(xiàn)自我修復(fù)的效果。 科研人員希望能將此項研究成果用于幫助成年病人手術(shù)后的傷口愈合。
'Fountain of youth' gene is discovered - and scientists say it could help heal wounds
A ‘fountain of youth gene’ has been identified by scientists.Experts have long been puzzled as to why young animals recover from injuries more quickly than adults. The gene, Lin28a, is highly active in unborn children, but does less and less with age.
In tests on mice, it quickened the healing of wounds and sped up regrowth after a patch of fur was shaved.
It also helped repair tissues in the ear after they were injured.Lin28a achieved all of these effects by increasing the production of several metabolicenzymes and enhancing metabolic processes that are normally more active in embryos.
The Harvard Medical School scientists hope that waking the gene up in the adult body could speed up the healing of wounds after operations.
Researcher George Daley said it may be possible to produce a drug that has the same effect as the gene.
He added: ‘It sounds like science fiction but Lin28a could be part of a healing cocktail that gives adults the superior tissue repair seen in juvenile animals.’
He said: ‘Why some animals can fully regenerate organs when others cannot is a longstanding mystery of biology.
‘Our studies support the concept that mammalian tissue repair can be substantially improved by engineering the reactivation of genes that regulate juvenile developmental stages.’
The research is published in the journal Cell.
據(jù)英國《每日郵報》報道，美國哈佛大學科研人員近日宣布，他們發(fā)現(xiàn)了能使人保持年輕的基因。這組名為Lin28a的基因在未出生的胎兒身上非常活躍，但隨著人類年齡的增長，其功能開始逐漸退化。此前，科學家一直無法解釋為什么年輕的動物在受傷后會比成年的動物恢復(fù)得快。在一組實驗中，科學家把小白鼠的皮毛剃光，然后發(fā)現(xiàn)Lin28a能夠加快皮毛重生的速度。在另一組實驗中，科學家發(fā)現(xiàn)Lin28a能夠幫助小白鼠受傷的皮膚組織加速復(fù)原。研究發(fā)現(xiàn)，Lin28a基因能產(chǎn)生多種代謝酶，加快新陳代謝的速度，實現(xiàn)自我修復(fù)的效果。 科研人員希望能將此項研究成果用于幫助成年病人手術(shù)后的傷口愈合。