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.

Cancers
|June 27, 2020
PubMed

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.

Related Concept Videos

Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.6K
Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow01:26

Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow

Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug...
145
Effect of Hepatic Disease on Pharmacokinetics: Active Drug, Metabolite and Fraction of Metabolized Drug01:14

Effect of Hepatic Disease on Pharmacokinetics: Active Drug, Metabolite and Fraction of Metabolized Drug

In pharmacotherapy, monitoring drug concentrations is paramount, especially for drugs whose therapeutic effects hinge on both the active compound and its metabolite. Hepatic impairment profoundly influences drug potency by altering liver function. If the drug is more potent than its metabolite, impaired liver function amplifies drug activity due to elevated drug concentration levels. Conversely, if the metabolite holds greater potency, diminished liver function diminishes drug activity by...
133
Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test01:22

Effect of Hepatic Disease on Pharmacokinetics: Pathophysiologic Assessment and Liver Function Test

In clinical practice, the direct measurement of hepatic blood flow to evaluate liver function presents significant challenges due to the intricate and specialized nature of the necessary techniques. Consequently, healthcare professionals often rely on empirical estimates derived from thorough patient examinations and liver function tests to gauge liver health. Among the tools at their disposal, the Child–Pugh and MELD scoring systems stand out for their ability to categorize and assess...
115
Hepatic Drug Excretion: Influencing Factors01:16

Hepatic Drug Excretion: Influencing Factors

The biliary system of the liver, crucial for bile secretion and drug excretion, comprises intrahepatic bile ducts that merge to form the common hepatic duct. This duct, carrying hepatic bile, combines with the cystic duct, draining the gallbladder and forming the common bile duct, which empties into the duodenum. Bile, produced by hepatic cells lining the bile canaliculi, is composed primarily of water, bile salts, pigments, electrolytes, and lesser amounts of cholesterol and fatty acids. Bile...
452
Hepatic Drug Clearance: Role of Transporters01:14

Hepatic Drug Clearance: Role of Transporters

In the liver and bile canaliculi, influx and efflux transporters modification can influence intrinsic clearance. Transporters play a significant role in moving drugs within liver cells. Elaborate models, such as the Biopharmaceutical Classification System (BCS), are essential to relate transporters to drug disposition. This system categorizes drugs into four classes based on solubility and permeability, providing insights into elimination routes and the effects of transporters following oral...
233