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Journal of Proteome Research

Journal of Proteome Research

IF: 3.6
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EIF4G2 Promotes Hepatocellular Carcinoma Progression via IRES-dependent PLEKHA1 Translation Regulation

Published:4 October 2024 DOI: 10.1021/acs.jproteome.4c00457 PMID: 39213495
Manman Li,?Lijuan Lou,?Liangliang Ren,?Chaoying Li,?Rui Han,?Junyi Jiang,?Lihui Qi,?Ying Jiang

Abstract

Hepatocellular carcinoma (HCC) is a highly lethal cancer, and proteomic studies have shown increased protein diversity and abundance in HCC tissues, whereas the role of protein translation has not been extensively explored in HCC. Our research focused on key molecules in the translation process to identify a potential contributor in HCC. We discovered that EIF4G2, a crucial translation initiation factor, is significantly upregulated in HCC tissues and associated with poor prognosis. This study uniquely highlights the impact of EIF4G2 deletion, which suppresses tumor growth and metastasis both in vitro and in vivo. Furthermore, polysome analysis and nascent protein synthesis assays revealed EIF4G2's role in regulating protein translation, specifically identifying PLEKHA1 as a key translational product. This represents a novel mechanistic insight into HCC malignancy. RNA immunoprecipitation (RIP) and Dual-luciferase reporter assays further revealed that EIF4G2 facilitates PLEKHA1 translation via an IRES-dependent manner. Importantly, the synergistic effects of EIF4G2 depletion and PLEKHA1 reduction in inhibiting cell migration and invasion underscore the therapeutic potential of targeting this axis. This study not only advances our understanding of translational regulation in HCC but also identifies the EIF4G2-PLEKHA1 axis as a promising therapeutic target, offering new avenues for intervention in HCC treatment.

Substances (4)

Materials
Procduct Name CAS Molecular Formula Supplier Price
PUROMYCIN DIHYDROCHLORIDE 58-58-2 C22H30ClN7O5 492 suppliers $11.00-$5076.00
PUROMYCIN DIHYDROCHLORIDE 58-58-2 C22H30ClN7O5 492 suppliers $11.00-$5076.00
PUROMYCIN DIHYDROCHLORIDE 58-58-2 C22H30ClN7O5 492 suppliers $11.00-$5076.00
PUROMYCIN DIHYDROCHLORIDE 58-58-2 C22H30ClN7O5 492 suppliers $11.00-$5076.00

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