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Annexin 1: the new face of an old molecule

Lina H. K. Lim^* and Shazib Pervaiz^*,,1

^* Department of Physiology, Yong Loo Lin School of Medicine, and

NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore

¹Correspondence: Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 2 Medical Dr., Bldg MD9, Singapore 117597. E-mail: phssp{at}nus.edu.sg

The annexin superfamily consists of 13 calcium or calcium and phospholipid binding proteins with a significant degree of biological and structural homology (40–60%). First described in the late 1970s and subsequently referred to as macrocortin, renocortin, lipomodulin, lipocortin-1, and more recently Annexin 1, this 37 kDa calcium and phospholipid binding protein is a strong inhibitor of glucocorticoid-induced eicosanoid synthesis and PLA2. Recent interest in the biological activity of this intriguing molecule has unraveled important functional attributes of Annexin 1 in a variety of inflammatory pathways, on cell proliferation machinery, in the regulation of cell death signaling, in phagocytic clearance of apoptosing cells, and most importantly in the process of carcinogenesis. Here we attempt to present a short review on these diverse biological activities of an interesting and important molecule, which could be a potential target for novel therapeutic intervention in a host of disease states.— Lim, L. H. K., Pervaiz, S. Annexin 1: the new face of an old molecule.

Key Words: inflammation • glucocorticoids • apoptosis • cancer

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