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伪狂犬病毒抑制孕激素诱导的 TRPML1 失活,促进病毒进入。

Pseudorabies virus inhibits progesterone-induced inactivation of TRPML1 to facilitate viral entry.

机构信息

College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan Province, China.

Key Laboratory of Animal Biochemistry and Nutrition, Ministry of Agriculture and Rural Affairs, Zhengzhou, Henan Province, China.

出版信息

PLoS Pathog. 2024 Jan 31;20(1):e1011956. doi: 10.1371/journal.ppat.1011956. eCollection 2024 Jan.

Abstract

Viral infection is a significant risk factor for fertility issues. Here, we demonstrated that infection by neurotropic alphaherpesviruses, such as pseudorabies virus (PRV), could impair female fertility by disrupting the hypothalamus-pituitary-ovary axis (HPOA), reducing progesterone (P4) levels, and consequently lowering pregnancy rates. Our study revealed that PRV exploited the transient receptor potential mucolipin 1 (TRPML1) and its lipid activator, phosphatidylinositol 3,5-bisphosphate (PI(3,5)P2), to facilitate viral entry through lysosomal cholesterol and Ca2+. P4 antagonized this process by inducing lysosomal storage disorders and promoting the proteasomal degradation of TRPML1 via murine double minute 2 (MDM2)-mediated polyubiquitination. Overall, the study identifies a novel mechanism by which PRV hijacks the lysosomal pathway to evade P4-mediated antiviral defense and impair female fertility. This mechanism may be common among alphaherpesviruses and could contribute significantly to their impact on female reproductive health, providing new insights for the development of antiviral therapies.

摘要

病毒感染是导致生育问题的一个重要风险因素。在这里,我们证明了神经嗜性α疱疹病毒(如伪狂犬病病毒(PRV))的感染可以通过破坏下丘脑-垂体-卵巢轴(HPOA)、降低孕激素(P4)水平来损害女性生育能力,从而降低怀孕率。我们的研究表明,PRV 利用瞬时受体电位粘蛋白 1(TRPML1)及其脂质激活剂磷脂酰肌醇 3,5-二磷酸(PI(3,5)P2),通过溶酶体胆固醇和 Ca2+ 促进病毒进入。P4 通过诱导溶酶体储存障碍和通过鼠双微体 2(MDM2)介导的多泛素化促进 TRPML1 的蛋白酶体降解,从而拮抗这一过程。总的来说,该研究确定了 PRV 劫持溶酶体途径来逃避 P4 介导的抗病毒防御并损害女性生育能力的新机制。这种机制可能在α疱疹病毒中很常见,可能对它们对女性生殖健康的影响有重大贡献,为抗病毒治疗的发展提供了新的见解。

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