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Sphingolipids and acid ceramidase as therapeutic targets in cancer therapy
N Govindarajah1, R Clifford1, D Bowden1
1Institute of Translational Medicine, The University of Liverpool, Liverpool, United Kingdom; Department of General Surgery, The Countess of Chester Hospital NHS Foundation Trust, Chester, United Kingdom.
Background:
Sphingolipids have been shown to play a key part in cancer cell growth and death and have increasingly become the subject of novel anti-cancer therapies. Acid ceramidase, a sphingolipid enzyme, has an important role in the regulation of apoptosis. In this review we aim to assess the current evidence supporting the role of sphingolipids in cancer and the potential role that acid ceramidase may play in cancer treatment.
Methods:
A literature search was performed for published full text articles using the PubMed, Cochrane and Scopus databases using the search criteria string "acid ceramidase", "sphingolipid", "cancer". Additional papers were detected by scanning the references of relevant papers. A summary of the evidence for each cancer subgroup was then formed. Given the nature of the data extracted, no meta-analysis was performed.
Results:
Over expression of acid ceramidase has been demonstrated in a number of human cancers. In vitro data demonstrate that manipulation of acid ceramidase may present a useful therapeutic target. In the clinical setting, a number of drugs have been investigated with the ability to target acid ceramidase, with the most promising of those being small molecular inhibitors, such as LCL521.
Conclusion:
The role of the sphingolipid pathway in cancer is becoming very clearly established by promoting ceramide accumulation in response to cancer or cellular stress. Acid ceramidase is over expressed in a variety of cancers and has a role as a potential target for inhibition by novel specific inhibitors or off-target effects of traditional anti-cancer agents. Further work is required to develop acid ceramidase inhibitors safe for progression to clinical trials.
Insights
Sphingolipids are crucial in cancer progression and apoptosis. Acid ceramidase, an enzyme in this pathway, is overexpressed in many cancers, making it a potential therapeutic target for novel anti-cancer drugs.
Area of Science:
- Oncology
- Biochemistry
- Molecular Biology
Background:
- Sphingolipids are integral to cancer cell proliferation and survival, emerging as targets for new anti-cancer therapies.
- Acid ceramidase, a key sphingolipid metabolic enzyme, significantly influences cancer cell apoptosis.
- This review synthesizes evidence on sphingolipids in cancer and acid ceramidase's therapeutic potential.
Purpose of the Study:
- To review the role of sphingolipids in cancer development and progression.
- To evaluate the potential of targeting acid ceramidase in cancer treatment strategies.
Main Methods:
- A comprehensive literature search was conducted across PubMed, Cochrane, and Scopus databases.
- Search terms included "acid ceramidase", "sphingolipid", and "cancer".
- Relevant articles were identified, and their references were scanned for additional pertinent studies.
Main Results:
- Acid ceramidase overexpression is observed in various human cancers.
- In vitro studies indicate that modulating acid ceramidase activity is a viable therapeutic strategy.
- Clinical investigations have explored acid ceramidase inhibitors, with small molecules like LCL521 showing promise.
Conclusions:
- The sphingolipid pathway's role in cancer is increasingly recognized, particularly its influence on ceramide levels under stress.
- Acid ceramidase is a promising therapeutic target in multiple cancer types, amenable to inhibition by specific agents or affected by existing drugs.
- Further research is needed to develop safe and effective acid ceramidase inhibitors for clinical application.
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