Related Experiment Video
Updated: Aug 24, 2026

Utilizing Functional Genomics Screening to Identify Potentially Novel Drug Targets in Cancer Cell Spheroid Cultures
Published on: December 26, 2016
Sphingolipid metabolism enzymes as targets for anticancer therapy
1Department of Cell Biology, Section Membrane Cell Biology, Groningen University Institute for Drug Exploration, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands. j.w.kok@med.rug.nl
Abstract:
Treatment with anti-cancer agents in most cases ultimately results in apoptotic cell death of the target tumor cells. Unfortunately, tumor cells can develop multidrug resistance, e.g., by a reduced propensity to engage in apoptosis by which they become insensitive to multiple chemotherapeutics. Ceramide. the central molecule in cellular sphingolipid metabolism, has been recognized as an important mediator of apoptosis. Moreover, an increased cellular capacity for ceramide glycosylation has been identified as a novel multidrug resistance mechanism. Indeed, virtually all multidrug resistant cell types exhibit a deviating sphingolipid composition, most typically an increased level of glucosylceramide. Thus, the enzyme glucosylceramide synthase, which converts ceramide into glucosylceramide, has emerged as a potential target to increase apoptosis and decrease drug resistance of tumor cells. In addition, several other steps in the pathways of sphingolipid metabolism arc altered in multidrug resistant cells, opening a perspective on additional sphingolipid metabolism enzymes as targets for anti-cancer therapy. In this article, we present an overview of the current understanding concerning drug resistance-related changes in sphingolipid metabolism and how interference with this metabolism can be exploited to over come multidrug resistance.
Insights
Targeting sphingolipid metabolism, particularly glucosylceramide synthase, offers a novel strategy to overcome cancer multidrug resistance by enhancing apoptotic cell death. This approach aims to restore sensitivity to anti-cancer agents.
Area of Science:
- Biochemistry
- Cell Biology
- Oncology
Background:
- Anti-cancer treatments typically induce apoptotic cell death.
- Multidrug resistance (MDR) in tumor cells hinders treatment efficacy, often by reducing apoptosis.
- Sphingolipid metabolism, particularly ceramide, plays a key role in apoptosis.
Purpose of the Study:
- To explore the role of sphingolipid metabolism in MDR.
- To identify potential therapeutic targets within sphingolipid pathways to overcome MDR.
- To review how modulating sphingolipid metabolism can enhance anti-cancer therapy.
Main Methods:
- Review of current literature on sphingolipid metabolism and MDR.
- Analysis of changes in sphingolipid composition in multidrug-resistant cells.
- Identification of key enzymes in sphingolipid metabolism as potential therapeutic targets.
Main Results:
- Increased glucosylceramide levels, due to elevated glucosylceramide synthase activity, are a hallmark of MDR.
- Altered sphingolipid metabolism is a common feature of multidrug-resistant cancer cells.
- Targeting glucosylceramide synthase can potentially restore apoptosis and overcome MDR.
Conclusions:
- Modulating sphingolipid metabolism presents a promising strategy to combat cancer multidrug resistance.
- Glucosylceramide synthase is a key target for restoring sensitivity to chemotherapeutics.
- Further investigation into sphingolipid metabolic pathways may reveal additional targets for anti-cancer therapy.
Related Concept Videos
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Targeted Cancer Therapies
There are several types of targeted therapies against specific...
Transducer Mechanism: Enzyme-Linked Receptors
Major types that are helpful drug targets include:
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Combination Therapies and Personalized Medicine
The combination of the drug acetazolamide and sulforaphane is a good example of combination therapy to treat cancer. The cells in the interior of a large tumor often die due to the hypoxic and...
Pharmacogenomics: Identification of New Drug Targets