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Updated: Feb 7, 2026

Saturated Fatty Acids Induce Ceramide-associated Macrophage Cell Death
Published on: October 31, 2017
Mechanisms of Ceramide-Dependent Cancer Cell Death
Rose Nganga1, Natalia Oleinik1, Besim Ogretmen1
1Department of Biochemistry and Molecular Biology, and Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States.
Abstract:
Mechanistic details for the roles of sphingolipids and their downstream targets in the regulation of tumor growth, response to chemo/radiotherapy, and metastasis have been investigated in recent studies using innovative molecular, genetic and pharmacologic tools in various cancer models. Induction of ceramide generation in response to cellular stress by chemotherapy, radiation, or exogenous ceramide analog drugs mediates cell death via apoptosis, necroptosis, or mitophagy. In this chapter, distinct functions and mechanisms of action of endogenous ceramides with different fatty acyl chain lengths in the regulation of cancer cell death versus survival will be discussed. In addition, importance of ceramide subcellular localization, trafficking, and lipid-protein binding between ceramide and various target proteins in cancer cells will be reviewed. Moreover, clinical trials from structure-function-based studies to restore antiproliferative ceramide signaling by activating ceramide synthesis will also be analyzed. Future studies are important to understand the mechanistic involvement of ceramide-mediated cell death in anticancer therapy, including immunotherapy.
Insights
Sphingolipids, like ceramides, are key in cancer progression and treatment response. Understanding their mechanisms can enhance cancer therapies, including immunotherapy.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Sphingolipids, particularly ceramides, play crucial roles in cancer biology.
- Cellular stress from treatments like chemotherapy and radiation can induce ceramide generation.
- Ceramides influence cancer cell death pathways, including apoptosis, necroptosis, and mitophagy.
Purpose of the Study:
- To investigate the mechanistic roles of sphingolipids and ceramides in tumor growth, treatment response, and metastasis.
- To explore the distinct functions of endogenous ceramides with varying fatty acyl chain lengths in cancer cell fate.
- To review the significance of ceramide localization, trafficking, and interactions with proteins in cancer cells.
Main Methods:
- Utilizing innovative molecular, genetic, and pharmacologic tools in various cancer models.
- Analyzing cellular stress responses, including ceramide generation, induced by chemotherapy, radiation, and ceramide analogs.
- Reviewing structure-function-based studies and clinical trials focused on restoring ceramide signaling.
Main Results:
- Ceramide generation mediates cancer cell death through apoptosis, necroptosis, or mitophagy.
- Different ceramide species exhibit distinct functions in regulating cancer cell survival versus death.
- Ceramide subcellular localization, trafficking, and lipid-protein interactions are critical in cancer cells.
Conclusions:
- Restoring antiproliferative ceramide signaling by activating ceramide synthesis shows therapeutic potential.
- Further research into ceramide-mediated cell death mechanisms is vital for advancing anticancer therapies, including immunotherapy.
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