J Exp Med:对睾丸巨噬细胞的研究帮助科学家了解男性不孕症

2017-08-12 佚名 来宝网

两种类型的睾丸巨噬细胞的起源,发展和特征已经由马赛Luminy免疫学中心(CNRS / INSERM / Aix-Marseille University)的CNRS小组描述。为了阐明这些免疫细胞的性质,研究人员使用了一种新颖的细胞追踪方法。他们的研究结果于2017年8月7日发表在“实验医学杂志”上,具有重要的意义。他们可能有助于了解男性的某些不育症,并为他们寻找新的治疗方法。

两种类型的睾丸巨噬细胞的起源,发展和特征已经由马赛Luminy免疫学中心(CNRS / INSERM / Aix-Marseille University)的CNRS小组描述。为了阐明这些免疫细胞的性质,研究人员使用了一种新颖的细胞追踪方法。他们的研究结果于2017年8月7日发表在“实验医学杂志”上,具有重要的意义。他们可能有助于了解男性的某些不育症,并为他们寻找新的治疗方法。

从生命的开始,个体的免疫系统学会区分自身,即天然细胞与其他潜在的致病细胞。但是在男性身上,由于精子只出现在青春期,它们可能被免疫系统的某些元素误认为是外来细胞。睾丸巨噬细胞是专门针对精子的防御的免疫细胞。通过释放特定的分子,这些生育能力的监护人防止其他免疫系统药物进入睾丸。
巨噬细胞不仅迁移到感染和吞噬病原体的位点,而且还调节免疫系统活性,以确保器官的功能和再生。它们可能来自成年胚胎祖细胞或骨髓细胞。研究小鼠使得马赛Luminy免疫学中心(CNRS / INSERM / Aix-Marseille大学)的Michael Sieweke团队能够深入描述睾丸巨噬细胞群体。

睾丸分为两个隔室。在间质空间中发现一种睾丸巨噬细胞,其中也产生产生睾酮的Leydig细胞。这些间质性巨噬细胞是胚胎起源的:它们是从个体生命的开始出现的。另一种是管状的,即位于容纳精子细胞前体的生精小管的表面上。每个巨噬细胞群体具有独特的细胞标记。

研究人员使用新的细胞追踪方法来跟随肾小管巨噬细胞从骨髓向睾丸的运动。他们发现这些巨噬细胞只出现在小鼠出生后的两周,这对应于人类男性的短柔毛体。令人惊讶的是,一旦他们在睾丸中被建立,两个人群的巨噬细胞在其余的长寿命中仍然存在。 Sieweke的团队将重点研究巨噬细胞,精子和睾酮生产之间的关系,这可能为某些种类的男性不育症产生创新的治疗。

原始出处:
Mossadegh-Keller N, Gentek R, Gimenez G1,et al.Developmental origin and maintenance of distinct testicular macrophage populations.J Exp Med. 2017 Aug 7. pii: jem.20170829. doi: 10.1084/jem.20170829. [Epub ahead of print]

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    2017-08-18 虈亣靌

    讲解的非常好,值得学习

    0

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    2017-08-14 zhangph
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    2017-08-13 184****9840

    学习了受益匪浅

    0

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    2017-08-12 三生有幸9135

    学习一下谢谢分享

    0