Nature:研究人员利用细胞编程愈合伤口

2018-09-11 冯丽妃 中国科学报

美国科学家的一项新研究称,通过将伤口内的细胞重新编程为表皮细胞,可以治愈小鼠的伤口和溃疡。相关成果9月6日在线发表于《自然》。

美国科学家的一项新研究称,通过将伤口内的细胞重新编程为表皮细胞,可以治愈小鼠的伤口和溃疡。相关成果9月6日在线发表于《自然》。

伤口愈合的关键在于周围组织的角化细胞(皮肤最外层的原始细胞)移动至伤口处止住了损伤。但如果伤口较大,这个过程就缺乏效率,而且受伤者年龄越大,这种情况越明显。随着皮肤愈合功能的下降,小伤口更容易发展成为难以治愈的伤口,甚至是致命的溃疡。随着老龄人口的增长,慢性溃疡的发病率正处于上升趋势,因此需要一种更加简单,而且比目前的植皮和昂贵的人造移植物更加有效的治疗方法。

加利福尼亚州索尔克生物研究所的Juan Carlos Izpisua Belmonte及同事使用细胞重编程技术,将伤口结缔组织的细胞转变为角化细胞祖细胞,从而无须细胞迁移。他们鉴定出了4种编程皮肤细胞所需要的蛋白,并通过病毒直接将其递送至小鼠背部难以愈合的溃疡处,结果发现重编程细胞成功使受伤的皮肤愈合。尽管还需要进一步改进和安全测试,但研究人员认为,该技术有望用于治疗人体皮肤损伤,也可能用于治疗其他组织损伤和器官损伤。

原始出处:

Masakazu Kurita, Toshikazu Araoka, Tomoaki Hishida, et.al. In vivo reprogramming of wound-resident cells generates skin epithelial tissue. LETTER

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    2019-08-23 liye789132251
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    2018-10-19 zwjnj2

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    2018-09-13 zwjnj2

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    2018-09-11 明月清辉

    谢谢分享,学习了

    0

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