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l-Methionine potentiates anticancer activity of Sorafenib by epigenetically altering DUSP3/ERK pathway in hepatocellular carcinoma. | LitMetric

l-Methionine potentiates anticancer activity of Sorafenib by epigenetically altering DUSP3/ERK pathway in hepatocellular carcinoma.

J Biochem Mol Toxicol

Laboratory of Epigenetics and Diseases, Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar (Mohali), Punjab, India.

Published: March 2024

AI Article Synopsis

  • Hepatocellular carcinoma (HCC) is a major cause of cancer-related deaths, and the common treatment, Sorafenib, quickly leads to drug resistance, worsening patient outcomes.
  • The study found that l-methionine significantly enhanced the effectiveness of Sorafenib against HCC cells by reducing its inhibitory concentration and increasing oxidative stress while activating certain cellular pathways.
  • In a rat model resistant to Sorafenib, l-methionine reduced tumor growth and inflammation, improved survival rates, and altered gene expression related to drug resistance, suggesting that it may be a promising complementary treatment for HCC.

Article Abstract

Hepatocellular carcinoma (HCC) is the third most common cancer-related cause of death worldwide. Although Sorafenib is the standard systemic therapy for treating HCC, but it develops resistance very quickly, leading to poor prognosis. The current study was planned to explore the effect of l-methionine on the anticancer activity of Sorafenib in HCC. Ten millimolar of l-methionine treatment significantly reduced the IC of Sorafenib from 5.513 ± 0.171 to 0.8095 ± 0.0465 µM in HepG2 cell line. It also resulted in concomitant increase in oxidative stress and deactivation of ERK/AMPK/AKT pathway. Additionally, it also resulted in the increased expression of dual specificity phosphatase 3 (DUSP3). In a rat model of sorafenib-resistant HCC induced by diethylnitrosamine (DEN) (100 mg/L/day) and Sorafenib (10 mg/kg), l-methionine (300 and 500 mg/kg/day) supplementation overcame the drug resistance, as indicated by the reduced formation of surface tumor nodules, prevention of cellular hypertrophy, hyperplasia and inflammation, and improved animal survival. Furthermore, l-methionine in combination with Sorafenib also inhibited AMPK/AKT and ERK pathway. At chromatin level, l-methionine supplementation prevented global methylation of H3K27me3, an inactivation mark, and demethylation of H3K36me2, an activation mark. Interestingly, our findings suggest that inhibition of the ERK pathway via increased activity of DUSP3 is epigenetically regulated. Besides, chromatin immunoprecipitation data exhibited augmented H3K36me2 (an activation mark) levels on the DUSP3 promoter region. To the best of our knowledge, we are the first to report that l-methionine supplementation improves the chemosensitivity in Sorafenib-resistant HCC via modulating the epigenetic landscape and can be a potential therapeutic strategy.

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Source
http://dx.doi.org/10.1002/jbt.23663DOI Listing

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