Wen Mengke, Yi Na, Mijiti Bulabiyamu, Zhao Shihong, Shen Guqun
The Second Department of Gynecology, Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, 830011, China.
Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xinjiang Medical University, Urumqi, 830011, China.
J Bioenerg Biomembr. 2024 Dec;56(6):657-668. doi: 10.1007/s10863-024-10042-x. Epub 2024 Oct 19.
N-methyladenosine (mA) modification is, a more common epigenetic modification, mainly found in mRNA. More and more researches have shown the important functions of mA on human cancers. This study seeks to explore the role of hnRNPA2B1 and mA-dependent mechanism in cervical cancer. Elevated hnRNPA2B1 indicated the poor prognosis of cervical cancer patients. Enforced hnRNPA2B1 reduced the apoptosis, and accelerated the proliferation and migration of cervical cancer cells in vitro. Besides, hnRNPA2B1 promoted the aerobic glycolysis of cervical cancer cells, including the lactate secretion, glucose uptake, ATP production, extracellular acidification rate (ECAR) and oxygen consumption rate (OCR). LDHA was found as the downstream target of hnRNPA2B1 by mA site. Moreover, hnRNPA2B1 enhanced the mRNA stability of LDHA through mA-dependent manner. LDHA inhibitor (FX-11) could reverse the effect of hnRNPA2B1. Taken together, the data revealed that hnRNPA2B1 promoted the proliferation, migration and aerobic glycolysis of cervical cancer cells by mA/LDHA-dependent manner. These findings might bring a new idea for cervical cancer treatment.
N-甲基腺苷(mA)修饰是一种较为常见的表观遗传修饰,主要存在于信使核糖核酸(mRNA)中。越来越多的研究表明,mA在人类癌症中具有重要作用。本研究旨在探讨异质性核糖核蛋白A2B1(hnRNPA2B1)和mA依赖机制在宫颈癌中的作用。hnRNPA2B1水平升高表明宫颈癌患者预后不良。在体外,过表达hnRNPA2B1可减少细胞凋亡,并加速宫颈癌细胞的增殖和迁移。此外,hnRNPA2B1促进宫颈癌细胞的有氧糖酵解,包括乳酸分泌、葡萄糖摄取、三磷酸腺苷(ATP)生成、细胞外酸化率(ECAR)和耗氧率(OCR)。通过mA位点发现乳酸脱氢酶A(LDHA)是hnRNPA2B1的下游靶点。此外,hnRNPA2B1通过依赖mA的方式增强LDHA的信使核糖核酸稳定性。LDHA抑制剂(FX-11)可逆转hnRNPA2B1的作用。综上所述,数据表明hnRNPA2B1通过mA/LDHA依赖的方式促进宫颈癌细胞的增殖、迁移和有氧糖酵解。这些发现可能为宫颈癌治疗带来新的思路。