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Division of Pulmonary and Critical Care Medicine, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14610, USA, Steve_Georas@urmc.rochester.edu.
Lysophosphatidic acid (LPA) can affect the growth, migration, and activation of many different cell types. Research in this field has recently accelerated due to the molecular cloning of LPA receptors as well as advances in our understanding of LPA metabolism. A major pathway for LPA generation is the hydrolysis of lysophosphatidylcholine by the enzyme autotaxin (ATX). Although most research to-date has been conducted in other disciplines (e.g., neurobiology and cardiovascular diseases), emerging data point to an important role for LPA and ATX in regulating immune responses. Here we review current understanding of LPA and ATX in immunity with an emphasis on migration and activation of lymphocytes and dendritic cells. New gene-targeted and transgenic mice, receptor-specific antibodies, and pathway antagonists should rapidly enhance our understanding of this versatile lysolipid in immune responses in the near future.
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