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Updated: Dec 17, 2025

A Three-Dimensional Spheroid Model to Investigate the Tumor-Stromal Interaction in Hepatocellular Carcinoma
Published on: September 30, 2021
Molecular Bases of Drug Resistance in Hepatocellular Carcinoma
Jose J G Marin1,2, Rocio I R Macias1,2, Maria J Monte1,2
1Experimental Hepatology and Drug Targeting (HEVEFARM) Group, University of Salamanca, IBSAL, 37007 Salamanca, Spain.
Abstract:
The poor outcome of patients with non-surgically removable advanced hepatocellular carcinoma (HCC), the most frequent type of primary liver cancer, is mainly due to the high refractoriness of this aggressive tumor to classical chemotherapy. Novel pharmacological approaches based on the use of inhibitors of tyrosine kinases (TKIs), mainly sorafenib and regorafenib, have provided only a modest prolongation of the overall survival in these HCC patients. The present review is an update of the available information regarding our understanding of the molecular bases of mechanisms of chemoresistance (MOC) with a significant impact on the response of HCC to existing pharmacological tools, which include classical chemotherapeutic agents, TKIs and novel immune-sensitizing strategies. Many of the more than one hundred genes involved in seven MOC have been identified as potential biomarkers to predict the failure of treatment, as well as druggable targets to develop novel strategies aimed at increasing the sensitivity of HCC to pharmacological treatments.
Insights
Advanced hepatocellular carcinoma (HCC) shows poor outcomes due to chemoresistance. Understanding molecular mechanisms of chemoresistance (MOC) can identify biomarkers and targets for improved HCC treatment strategies.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Advanced hepatocellular carcinoma (HCC) presents a significant clinical challenge due to its poor prognosis and resistance to conventional chemotherapy.
- Current treatments, including tyrosine kinase inhibitors (TKIs) like sorafenib and regorafenib, offer only modest survival benefits for HCC patients.
Purpose of the Study:
- This review updates current knowledge on the molecular mechanisms of chemoresistance (MOC) in HCC.
- It aims to identify factors influencing HCC response to various pharmacological treatments, including chemotherapy, TKIs, and immunotherapy.
Main Methods:
- A comprehensive review of existing literature on HCC chemoresistance.
- Analysis of molecular data related to gene expression and drug response in HCC.
Main Results:
- Over one hundred genes implicated in seven distinct MOC have been identified.
- These genes offer potential biomarkers for predicting treatment failure in HCC.
Conclusions:
- Understanding MOC is crucial for improving HCC treatment efficacy.
- Identified genes represent potential therapeutic targets for novel strategies to enhance HCC sensitivity to pharmacological agents.
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