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男性福音!利用干细胞可生成睾酮间质细胞治疗性腺功能减退症

2016-12-25 MedSci MedSci原创

近1/3的老年男性受男性性腺功能减退症的困扰,而男性性腺功能减退症最常见的治疗选择是睾酮替代疗法,但是这种治疗存在明显的副作用,包括静脉血栓栓塞和深静脉血栓形成的风险。近日,来自中国暨南大学的一项新的研究发现表明,或可利用干细胞来治疗性腺功能减退症,该研究成果已发表于Stem Cell Reports。睾丸间质细胞可产生雄激素,然后雄激素可合成睾酮,新的研究发现涉及将成人的皮肤细胞直接转化成睾酮产

近1/3的老年男性受男性性腺功能减退症的困扰,而男性性腺功能减退症最常见的治疗选择是睾酮替代疗法,但是这种治疗存在明显的副作用,包括静脉血栓栓塞和深静脉血栓形成的风险。

近日,来自中国暨南大学的一项新的研究发现表明,或可利用干细胞来治疗性腺功能减退症,该研究成果已发表于Stem Cell Reports

睾丸间质细胞可产生雄激素,然后雄激素可合成睾酮,新的研究发现涉及将成人的皮肤细胞直接转化成睾酮产生细胞。


研究中,研究人员探究了直接细胞重编程来生成睾丸间质样细胞的可能性。直接细胞重编程是比常规表观遗传变成可更快且更安全获得目标细胞类型的技术,因此,考虑使用该方法获得睾丸间质细胞来治疗男性性腺功能减退症或是最佳的再生方法。


研究采用性腺机能减退雄性老鼠模型,使用携带mCherry基因的载体来感染小鼠胚胎成纤维细胞,由此可从成纤维细胞中分离出类固醇生成细胞。然后,研究人员筛选了11个他们认为可能调节睾丸间质细胞类固醇激素合成基因表达的转录因子。

通过逐步筛选,最后研究人员确定了3个目标转录因子:DMRT1,GATA4和NR5A1。然后,研究小组利用慢病毒载体来控制这3个转录因子的基因表达。

结果研究人员成功将小鼠皮肤细胞直接转变成全能的、可分泌雄激素的睾丸间质细胞。

最后,科学家们将这些睾丸间质细胞移植于睾酮缺乏的大鼠和小鼠的睾丸中。

结果这些细胞不仅存活了下来,而且还恢复了小鼠和大鼠正常的睾酮水平。

该研究结果表明研究所用的方法或成为目前雄激素替代疗法的一个有效替代疗法。研究人员希望未来研究可着眼于提高该方法的效率,有助于生产出纯的睾丸间质细胞群体。

目前研究人员正在探究皮肤细胞直接重编程为睾丸间质细胞更为详细的机制细节。此外,研究人员也在探究使用非病毒或小分子来实现直接细胞转换的方法。

原始出处:

[1] Ana Sandoiu. Scientists use stem cells to restore testosterone. MNT, 23 December 2016.

[2] Yan Yang et al., Direct reprogramming of mouse fibroblasts toward Leydig-like cells by defined factors, Stem Cell Reports, 22 December 2016.

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    2016-12-27 tm10051981
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    2016-12-26 stomach

    StemCellReports这篇杂志不错。

    0

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    2016-12-25 知难而进

    学习了!!!!!!!!

    0

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    2016-12-25 陈安安

    0

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    2016-12-25 1e184d7bm65(暂无匿称)

    棒棒哒????????

    0

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