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Updated: May 22, 2026
Analysis of Schwann-astrocyte Interactions Using In Vitro Assays
Published on: January 13, 2011
Identification of C(6) -ceramide-interacting proteins in D6P2T Schwannoma cells
Venkatesh Kota1, Zdzislaw M Szulc, Hiroko Hama
1Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston,, SC, USA.
Abstract:
Ceramide is a bioactive molecule involved in numerous cell signaling pathways that are associated with cell cycle control, differentiation, senescence, and apoptosis. Although substantial knowledge about ceramide-regulated pathways has accumulated in the past decade, molecular mechanisms of ceramide action remain poorly understood, primarily due to limited information about ceramide-binding proteins. In the present study, we used affinity purification with a synthetic biotin-conjugated C(6) -ceramide analogue and LC-MS/MS to identify potential ceramide-interacting proteins in D6P2T Schwannoma cells. The purification resulted in identification of 97 unique proteins. The identified proteins are involved in various cellular processes, including apoptosis, cellular stress, cell cycle, cell differentiation, signaling, transcription, translation, protein biogenesis, metabolism, and transport.
Insights
Researchers identified 97 proteins that interact with ceramide, a key molecule in cell signaling. This discovery advances understanding of ceramide
Area of Science:
- Cell Biology
- Biochemistry
- Molecular Signaling
Background:
- Ceramide is a bioactive lipid mediator crucial for cell signaling pathways.
- Understanding ceramide's molecular mechanisms is limited by a lack of identified ceramide-binding proteins.
- Cellular processes regulated by ceramide include cell cycle control, differentiation, senescence, and apoptosis.
Purpose of the Study:
- To identify novel ceramide-binding proteins using a proteomic approach.
- To elucidate the molecular mechanisms underlying ceramide's cellular functions.
Main Methods:
- Affinity purification using a synthetic biotin-conjugated C(6)-ceramide analogue.
- Liquid chromatography-tandem mass spectrometry (LC-MS/MS) for protein identification.
- Utilized D6P2T Schwannoma cells as the experimental model.
Main Results:
- Successfully identified 97 unique proteins that potentially interact with ceramide.
- The identified proteins are implicated in diverse cellular functions such as apoptosis, cellular stress, and metabolism.
- This dataset provides a foundation for further investigation into ceramide-protein interactions.
Conclusions:
- The study presents a comprehensive list of potential ceramide-interacting proteins.
- These findings offer new molecular targets for understanding ceramide-mediated cellular processes.
- Further research is warranted to validate these interactions and their functional significance.
