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The Thrombospondins

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Publisher Elsevier
Date 2004 Apr 20
PMID 15094109
Citations 208
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Abstract

Thrombospondin-1 (TSP-1) was studied in the 1980s as a major component of platelet alpha-granules released upon platelet activation and also as a cell adhesion molecule. In 1993, we published a short review that discussed the exciting identification by molecular cloning of four additional vertebrate gene products related to TSP-1 [Current Biology 3 (1993) 188]. We put forward a structurally based classification for the newly identified proteins and discussed the functional and evolutionary implications of the new gene family. Since that time, the depth and breadth of knowledge on vertebrate TSPs and their functions in cells and tissues in health and disease has expanded into important new areas. Of particular interest is the new knowledge on the complex, domain and cell-type specific effects of TSPs on cell-signaling and cell-adhesion behaviour, the roles of TSP-1 and TSP-2 as anti-angiogenic agents, the roles of TSP-1 and TSP-2 in wound-healing, and associations of point mutations and polymorphisms in TSP-1, TSP-4 and TSP-5/COMP with human genetic diseases. The TSP family also now includes invertebrate members. In this article, we give the 2004 view on TSPs and our perspectives on the significant challenges that remain. Other articles in this issue discuss the functions of vertebrate TSPs in depth.

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