Therapeutic effect and transcriptome-methylome characteristics of METTL3 inhibition in liver hepatocellular carcinoma

Author:

Liu Qingbin,Qi Jingjing,Li Weiyang,Tian Xinchen,Zhang Jiaqi,Liu Fen,Lu Xiulian,Zang Hengchang,Liu Chenqiao,Ma Changlin,Yu Yong,Jiang Shulong

Abstract

AbstractMethyltransferase-like 3 (METTL3) is the key subunit of methyltransferase complex responsible for catalyzing N6-methyladenosine (m6A) modification on mRNA, which is the most prevalent post-transcriptional modification in eukaryotes. In this study, we utilized online databases to analyze the association between METTL3 expression and various aspects of tumorigenesis, including gene methylation, immunity, and prognosis. Our investigation revealed that METTL3 serves as a prognostic marker and therapeutic target for liver hepatocellular carcinoma (LIHC). Through experimental studies, we observed frequent upregulation of METTL3 in LIHC tumor tissue and cells. Subsequent inhibition of METTL3 using a novel small molecule inhibitor, STM2457, significantly impeded tumor growth in LIHC cell lines, spheroids, and xenograft tumor model. Further, transcriptome and m6A sequencing of xenograft bodies unveiled that inhibition of METTL3-m6A altered genes enriched in SMAD and MAPK signaling pathways that are critical for tumorigenesis. These findings suggest that targeting METTL3 represents a promising therapeutic strategy for LIHC.

Funder

Doctoral Fund of Jining First People’s Hospital

Jining Key Research and Development Program

Shandong Medical and Health Science and Technology Development Plan Project

National Natural Science Foundation of China

Natural Science Foundation of Shandong Province

Young Taishan Scholars Program of Shandong Province

Publisher

Springer Science and Business Media LLC

Subject

Cancer Research,Genetics,Oncology

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