Sgpl1 deletion elevates S1P levels, contributing to NPR2 inactivity and p21 expression that block germ cell development.

Sgpl1 deletion elevates S1P levels, contributing to NPR2 inactivity and p21 expression that block germ cell development.
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Sgpl1 缺失会提高 S1P 水平,导致 NPR2 失活和 p21 表达,从而阻碍生殖细胞发育

DOI:
10.1038/s41419-021-03848-9
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发表时间:
2021-06-03
影响因子:
9
通讯作者:
Zhang M
Zhang M
中科院分区:
生物学1区
文献类型:
--
作者:
Yuan F;Wang Z;Sun Y;Wei H;Cui Y;Wu Z;Zhang C;Xie KP;Wang F;Zhang M

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鞘氨醇磷酸裂解酶1(SGPL 1)是一种高度保守的酶,其不可逆地降解鞘氨醇-1-磷酸(S1 P)。sgpl 1基因敲除小鼠不能发育生殖细胞,导致不育。然而,其分子机制仍不清楚。本研究结果表明,SGPL 1主要表达于颗粒细胞、间质细胞、精母细胞和圆形精子细胞。Sgpl 1缺失导致S1 P在性腺中积累。在卵巢中,S1 P降低颗粒细胞中的利钠肽受体2(NPR 2)活性,并抑制早期卵泡生长。在睾丸中,S1 P增加细胞周期蛋白依赖性激酶抑制因子1A(p21)的水平和Leydig细胞的凋亡,从而导致精子发生停滞。这些结果表明,Sgpl 1缺失增加细胞内S1 P水平,导致通过不同的信号传导途径阻止雌性和雄性生殖细胞发育。
Sphingosine phosphate lyase 1 (SGPL1) is a highly conserved enzyme that irreversibly degrades sphingosine-1-phosphate (S1P). Sgpl1-knockout mice fail to develop germ cells, resulting in infertility. However, the molecular mechanism remains unclear. The results of the present study showed that SGPL1 was expressed mainly in granulosa cells, Leydig cells, spermatocytes, and round spermatids. Sgpl1 deletion led to S1P accumulation in the gonads. In the ovary, S1P decreased natriuretic peptide receptor 2 (NPR2) activity in granulosa cells and inhibited early follicle growth. In the testis, S1P increased the levels of cyclin-dependent kinase inhibitor 1A (p21) and apoptosis in Leydig cells, thus resulting in spermatogenesis arrest. These results indicate that Sgpl1 deletion increases intracellular S1P levels, resulting in the arrest of female and male germ cell development via different signaling pathways.
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