Abstract
Fibroblast adhesion can be modulated by proteins released by neuroendocrine cells and neurons, such as chromogranin A (CgA) and its N-terminal fragment vasostatin-1 (VS-1, CgA1–78). We have investigated the mechanisms of the interaction of VS-1 with fibroblasts and of its pro-adhesive activity and have found that the proadhesive activity of VS-1 relies on its interaction with the fibroblast membrane via a phospholipid-binding amphipathic α-helix located within residues 47–66, as well as on the interaction of the adjacent C-terminal region 67–78, which is structurally similar to ezrin–radixin–moesin-binding phosphoprotein 50 (a membrane-cytoskeleton adapter protein), with other cellular components critical for the regulation of cell cytoskeleton.
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Abbreviations
- CgA:
-
Chromogranin A
- VS-1:
-
Recombinant Ser-Thr-Ala-CgA1–78
- mAb:
-
Monoclonal antibody
- ERM:
-
Ezrin–radixin–moesin
- EBP50:
-
ERM-binding phosphoprotein 50
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Acknowledgments
This work was supported by Associazione Italiana per la Ricerca sul Cancro (AIRC) and Ministero della Sanità of Italy. We thank Alessandra Boletta for helpful discussion.
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Dondossola, E., Gasparri, A., Bachi, A. et al. Role of vasostatin-1 C-terminal region in fibroblast cell adhesion. Cell. Mol. Life Sci. 67, 2107–2118 (2010). https://doi.org/10.1007/s00018-010-0319-5
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DOI: https://doi.org/10.1007/s00018-010-0319-5