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Sphingolipids in neuroblastoma: their role in drug resistance mechanisms
Hannie Sietsma1, Anne Jan Dijkhuis, Willem Kamps
1Department of Pathology and Laboratory Medicine, University Hospital Groningen, The Netherlands.
Abstract:
Disseminated neuroblastoma usually calls for chemotherapy as the primary approach for treatment. Treatment failure is often attributable to drug resistance. This involves a variety of cellular mechanisms, including increased drug efflux through expression of ATP-binding cassette transporters (e.g., P-glycoprotein) and the inability of tumor cells to activate or propagate the apoptotic response. In recent years it has become apparent that sphingolipid metabolism and the generation of sphingolipid species, such as ceramide, also play a role in drug resistance. This may involve an autonomous mechanism, related to direct effects of sphingolipids on the apoptotic response, but also a subtle interplay between sphingolipids and ATP-binding cassette transporters. Here, we present an overview of the current understanding of the multiple levels at which sphingolipids function in drug resistance, with an emphasis on sphingolipid function in neuroblastoma and how modulation of sphingolipid metabolism may be used as a novel treatment paradigm.
Insights
Sphingolipids influence neuroblastoma drug resistance by affecting apoptosis and drug efflux. Modulating sphingolipid metabolism offers a potential new treatment strategy for overcoming chemotherapy resistance.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Disseminated neuroblastoma treatment relies on chemotherapy, but drug resistance frequently leads to treatment failure.
- Mechanisms of drug resistance include increased drug efflux via ATP-binding cassette transporters and impaired apoptosis.
- Sphingolipid metabolism, including ceramide generation, is increasingly recognized for its role in chemoresistance.
Purpose of the Study:
- To review the role of sphingolipids in neuroblastoma drug resistance.
- To explore the interplay between sphingolipids and ATP-binding cassette transporters in chemoresistance.
- To discuss sphingolipid metabolism modulation as a potential therapeutic strategy.
Main Methods:
- Literature review and synthesis of current research on sphingolipids and neuroblastoma drug resistance.
- Analysis of cellular mechanisms involving sphingolipid metabolism, apoptosis, and drug efflux transporters.
- Discussion of potential therapeutic interventions targeting sphingolipid pathways.
Main Results:
- Sphingolipids impact drug resistance through direct effects on apoptosis and indirect interactions with ATP-binding cassette transporters.
- Dysregulation of sphingolipid metabolism contributes to chemotherapy failure in neuroblastoma.
- Targeting sphingolipid pathways presents a novel approach to enhance treatment efficacy.
Conclusions:
- Sphingolipid metabolism is a critical determinant of neuroblastoma chemoresistance.
- Understanding the complex role of sphingolipids offers new avenues for therapeutic development.
- Modulation of sphingolipid metabolism may overcome drug resistance and improve patient outcomes.
