MIR4458 host gene (MIR4458HG)

MIR4458 host gene (MIR4458HG) is a long non-coding RNA (lncRNA) that functions as a significant oncogenic driver in hepatocellular carcinoma (HCC) [2, 3]. It is notably overexpressed in HCC tissues and correlates with advanced disease stages and poor survival outcomes [2, 5]. The primary biological role of MIR4458HG involves the regulation of cellular metabolism, specifically by enhancing the glycolytic pathway [2, 6]. It achieves this by binding to the m6A reader protein IGF2BP2, which in turn stabilizes the transcripts of hexokinase 2 (HK2) and the glucose transporter GLUT1 [2, 3]. Beyond its intracellular roles, MIR4458HG is secreted in exosomes, where it facilitates the polarization of tumor-associated macrophages toward a pro-tumorigenic M2-like state [2, 3]. This dual action on tumor metabolism and the immune microenvironment makes it a critical factor in cancer progression and immune evasion [2]. While no clinical drugs currently target MIR4458HG, it is being investigated as a potential therapeutic target for RNA-based interventions [2, 3]. Experimental studies using siRNA-mediated knockdown have demonstrated reduced tumor growth and metabolic activity in preclinical models [2, 6]. Consequently, MIR4458HG serves as both a promising candidate for drug development and a potential biomarker for HCC diagnosis and prognosis [2, 3].

Other names

MIR4458 host gene (non-protein coding)RP11-480D4.3Long non-coding RNA miR4458HGLNC-MTRR-3:1HSALNG0040004

Inhibition of lncRNA expression and disruption of RNA-protein interactions