Tianjin Beichen Traditional Chinese Medicine Hospital, Tianjin, China.
NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, China.
PeerJ. 2023 Jan 18;11:e14591. doi: 10.7717/peerj.14591. eCollection 2023.
Emerging articles have reported that N-methyladenosine (mA) modification is mainly involved in clear-cell renal cell carcinoma (ccRCC) tumorigenesis. However, the regulatory mechanisms of mA reader IGF2BP1 involved in ccRCC tumor energy metabolism are currently unknown. Results showed that the mA reader IGF2BP1 exhibited significantly higher expression in ccRCC cells. Functionally, results by gain/loss functional assays indicated that IGF2BP1 promoted the glycolytic characteristics, including glucose uptake, lactate production and extracellular acidification rate (ECAR). Mechanistically, IGF2BP1 recognized the mA modified sites on LDHA mRNA and enhanced its mRNA stability, thereby accelerating tumor energy metabolism. Thus, our work reveals a novel facet of the mA that promoted mRNA stability and highlighted the functional importance of IGF2BP1 as mA readers in post-transcriptional gene regulation.
新兴的研究表明,N6-甲基腺苷(m6A)修饰主要参与透明细胞肾细胞癌(ccRCC)的肿瘤发生。然而,m6A 读码器 IGF2BP1 参与 ccRCC 肿瘤能量代谢的调控机制目前尚不清楚。结果表明,m6A 读码器 IGF2BP1 在 ccRCC 细胞中表达明显升高。功能实验结果表明,IGF2BP1 促进了糖酵解特征,包括葡萄糖摄取、乳酸生成和细胞外酸化率(ECAR)。在机制上,IGF2BP1 识别 LDHA mRNA 上的 mA 修饰位点并增强其 mRNA 稳定性,从而加速肿瘤能量代谢。因此,我们的工作揭示了 mA 促进 mRNA 稳定性的新方面,并强调了 IGF2BP1 作为 m6A 读码器在转录后基因调控中的功能重要性。