Cell:释放自愈的“再生源泉”

2013-11-12 佚名 环球时报

最近,《细胞》杂志发表文章,称研究发现一种名叫Lin28a的蛋白质,这种蛋白质能够有助于组织的修复,这将对治疗癌症有积极作用。 研究表明,那些会产生Lin28a型蛋白质的老鼠,其毛发会比普通的老鼠长得更快,如果这种老鼠的耳朵被刺伤,则几乎能够完全愈合。而携带这种蛋白质的老鼠在幼年时被剪掉脚趾,则会完全长出新的来。 然而,研究人员发现,并不是带有Lin28a蛋白质

最近,《细胞》杂志发表文章,称研究发现一种名叫Lin28a的蛋白质,这种蛋白质能够有助于组织的修复,这将对治疗癌症有积极作用。

研究表明,那些会产生Lin28a型蛋白质的老鼠,其毛发会比普通的老鼠长得更快,如果这种老鼠的耳朵被刺伤,则几乎能够完全愈合。而携带这种蛋白质的老鼠在幼年时被剪掉脚趾,则会完全长出新的来。

然而,研究人员发现,并不是带有Lin28a蛋白质就一定具备特别的愈合能力。比如,心脏再生就没有表现出任何改进。如果老鼠已经进入青年期,那么其被剪掉的脚趾就没法再长回来了,然而其毛发仍会迅速生长,耳朵的软骨和结缔组织还会继续生长。【原文下载】


密歇根大学的Daniel Goldman一直研究Lin28a在斑马鱼视网膜再生过程中的作用,他认为,类似于心脏的组织具有某种抗拒重置的机制。

波士顿儿童医院细胞生物学家吴轼昌也是该项研究的作者之一,他说,事实上,代谢机制在组织愈合中的作用是最令人惊讶的,大多数生物学家都认为只有特定要素才能够产生愈合效用,而这一最新的研究结果则表明,每一个细胞都可以做到这一点。这一最新的研究成果要实现临床医疗应用还有很长的道路要走。

原文出处:

Monya Baker. Fountain-of-youth gene unleashes healing power. Nature, 07 November 2013; doi:10.1038/nature.2013.14128

Ng Shyh-Chang,Hao Zhu,T. Yvanka de Soysa,Gen Shinoda,Marc T. Seligson,Kaloyan M. Tsanov,Liem Nguyen,John M. Asara,Lewis C. Cantley,George Q. Daley. Lin28 Enhances Tissue Repair by Reprogramming Cellular Metabolism. Cell, 7 November 2013; DOI: 10.1016/j.cell.2013.09.059【原文下载】

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    2014-07-28 维他命
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    2014-06-11 jxrzshh