mTOR信号通路关键蛋白4E-BP1与S6K1对抑郁症的调控作用研究进展
收稿日期: 2025-10-13
修回日期: 2025-12-05
录用日期: 2026-05-26
网络出版日期: 2026-05-26
基金资助
黑龙江省中医药科研项目(ZHY2023-143);黑龙江省自然科学基金(H2018057)
Advances in the Study of the Regulatory Roles of mTOR Signaling Pathway Proteins 4E-BP1 and S6K1 in Depression
Received date: 2025-10-13
Revised date: 2025-12-05
Accepted date: 2026-05-26
Online published: 2026-05-26
哺乳动物雷帕霉素靶蛋白(mammalian target of rapamycin,mTOR)信号通路作为一个关键的信号传导通路,其下游效应分子4E-BP1(eIF4E结合蛋白1)和S6K1(核糖体蛋白S6激酶1)在抑郁症的神经发生、突触重塑及抗抑郁治疗中发挥重要作用。本研究从抑郁症的病理机制出发,结合现代分子生物学的研究,梳理了mTOR信号通路以及其下游效应分子4E-BP1与S6K1在抑郁症中的关系:当抑郁症发生时,mTOR信号通路被激活,激活的mTORC1磷酸化4E-BP1,使其与eIF4E的结合能力减弱,释放eIF4E,促进翻译起始,增加蛋白质的合成;被mTORC1磷酸化的S6K1则通过磷酸化核糖体蛋白S6(rpS6)等底物,促进核糖体的生物合成和蛋白质翻译。阐明二者在抑郁症发展过程中的作用,深化对抑郁症分子机制的理解,为抑郁症的临床治疗提供思路。
李家华
,
田旭升
.
mTOR信号通路关键蛋白4E-BP1与S6K1对抑郁症的调控作用研究进展
The mammalian target of rapamycin (mTOR) signaling pathway is a critical conduit for cellular information. Its downstream effectors 4E-BP1 (eIF4E-binding protein 1) and S6K1 (ribosomal protein S6 kinase 1) play pivotal roles in neurogenesis, synaptic remodeling, and antidepressant responses in major depressive disorder. Beginning with the pathological mechanisms of depression and integrating contemporary molecular-biology findings, this review maps the relationship between the mTOR pathway and its effectors 4E-BP1 and S6K1. In the depressive state, mTOR signaling is activated: mTORC1 phosphorylates 4E-BP1, weakening its affinity for eIF4E, thereby releasing eIF4E to facilitate translation initiation and enhance protein synthesis. Concurrently, mTORC1-phosphorylated S6K1 phosphorylates substrates such as ribosomal protein S6 (rpS6), promoting ribosome biogenesis and translational capacity. Elucidating the coordinated actions of 4E-BP1 and S6K1 during depression deepens the molecular understanding of the disease and may inspire novel therapeutic strategies.
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