The Spin1 interactor, Spindoc, is dispensable for meiotic division, but essential for haploid spermatid development in mice.

The Spin1 interactor, Spindoc, is dispensable for meiotic division, but essential for haploid spermatid development in mice.
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DOI:
10.1186/s12958-021-00828-8
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发表时间:
2021-09-15
期刊:
Reproductive biology and endocrinology : RB&E
影响因子:
--
通讯作者:
Bao J
Bao J
中科院分区:
其他
文献类型:
--
作者:
Jiang X;Zhu X;Cheng Y;Azhar M;Xing X;Li W;Cao Y;Shi Q;Bao J

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在哺乳动物中,生殖细胞的发育经历了戏剧性的形态和分子变化,并在表观遗传学上受到复杂而精致的调控。哪些表观遗传参与者以及他们如何参与生殖系发育过程还没有完全确定。Spin 1是一种多功能表观遗传蛋白阅读器,已显示其识别H3“K4 me 3-R8 me 2a”组蛋白标记,最近还识别非规范二价H3“K4 me 3-K9 me 3/2”标记。Spindoc作为一种与Spin 1相互作用的辅因子,可以增强Spin 1与其底物组蛋白标记的结合,从而调节下游信号传导;然而,Spindoc在生殖细胞发育中的生理作用尚不清楚。我们通过CRISPR/Cas9策略产生了两个Spindoc敲除小鼠模型,这表明Spindoc是单倍体精子细胞发育所特异性需要的,但不是精母细胞减数分裂所必需的。这项研究揭示了一个新的表观遗传参与者,参与单倍体生殖系的发展。
In mammals, germline development undergoes dramatic morphological and molecular changes and is epigenetically subject to intricate yet exquisite regulation. Which epigenetic players and how they participate in the germline developmental process are not fully characterized. Spin1 is a multifunctional epigenetic protein reader that has been shown to recognize H3 “K4me3-R8me2a” histone marks, and more recently the non-canonical bivalent H3 “K4me3-K9me3/2” marks as well. As a robust Spin1-interacting cofactor, Spindoc has been identified to enhance the binding of Spin1 to its substrate histone marks, thereby modulating the downstream signaling; However, the physiological role of Spindoc in germline development is unknown. We generated two Spindoc knockout mouse models through CRISPR/Cas9 strategy, which revealed that Spindoc is specifically required for haploid spermatid development, but not essential for meiotic divisions in spermatocytes. This study unveiled a new epigenetic player that participates in haploid germline development.
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