A proteomic screen reveals novel Fas ligand interacting proteins within nervous system Schwann cells

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Abstract

Fas ligand (FasL) binds Fas (CD95) to induce apoptosis or activate other signaling pathways. In addition, FasL transduces bidirectional or 'reverse signals'. The intracellular domain of FasL contains consensus sequences for phosphorylation and an extended proline rich region, which regulate its surface expression through undetermined mechanism(s). Here, we used a proteomics approach to identify novel FasL interacting proteins in Schwann cells to investigate signaling through and trafficking of this protein in the nervous system. We identified two novel FasL interacting proteins, sorting nexin 18 and adaptin β, as well as two proteins previously identified as FasL interacting proteins in T cells, PACSIN2 and PACSIN3. These proteins are all associated with endocytosis and trafficking, highlighting the tight regulation of cell surface expression of FasL in the nervous system. © 2007 Federation of European Biochemical Societies.

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Thornhill, P. B., Cohn, J. B., Drury, G., Stanford, W. L., Bernstein, A., & Desbarats, J. (2007). A proteomic screen reveals novel Fas ligand interacting proteins within nervous system Schwann cells. FEBS Letters, 581(23), 4455–4462. https://doi.org/10.1016/j.febslet.2007.08.025

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