title: Phospholipase A2 as a Molecular Determinant of Store-Operated Calcium Entry.
abstract: Activation of phospholipases A2 (PLA2) leads to the generation of biologically active lipid products that can affect numerous cellular events. Ca(2+)-independent PLA2 (iPLA2), also called group VI phospholipase A2, is one of the main types forming the superfamily of PLA2. Beside of its role in phospholipid remodeling, iPLA2 has been involved in intracellular Ca(2+) homeostasis regulation. Several studies proposed iPLA2 as an essential molecular player of store operated Ca(2+) entry (SOCE) in a large number of excitable and non-excitable cells. iPLA2 activation releases lysophosphatidyl products, which were suggested as agonists of store operated calcium channels (SOCC) and other TRP channels. Herein, we will review the important role of iPLA2 on the intracellular Ca(2+) handling focusing on its role in SOCE regulation and its implication in physiological and/or pathological processes.
authors.affiliation: Department of Medical Physiology and Biophysic, Institute of Biomedicine of Seville (IBiS), University Hospital of Virgen del Rocío/CSIC/University of Seville, Sevilla, 41013, Spain. tasmani@us.es.
authors.forename: Tarik
authors.initials: T
authors.lastname: Smani
authors.affiliation: Department of Medical Physiology and Biophysic, Institute of Biomedicine of Seville (IBiS), University Hospital of Virgen del Rocío/CSIC/University of Seville, Sevilla, 41013, Spain.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Domínguez-Rodriguez
authors.affiliation: Department of Medical Physiology and Biophysic, Institute of Biomedicine of Seville (IBiS), University Hospital of Virgen del Rocío/CSIC/University of Seville, Sevilla, 41013, Spain.
authors.forename: Paula
authors.initials: P
authors.lastname: Callejo-García
authors.affiliation: Departamento de Fisiología, University of Extremadura, Cáceres, Spain.
authors.forename: Juan A
authors.initials: JA
authors.lastname: Rosado
authors.affiliation: Department of Medical Physiology and Biophysic, Institute of Biomedicine of Seville (IBiS), University Hospital of Virgen del Rocío/CSIC/University of Seville, Sevilla, 41013, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Avila-Medina
mesh_terms: D002118:Calcium / Q000378:metabolism*; D020013:Calcium Signaling; D006801:Humans; D052139:Intracellular Calcium-Sensing Proteins; D017136:Ion Transport; D008565:Membrane Proteins / Q000378:metabolism; D054467:Phospholipases A2 / Q000378:metabolism*
chemical_list: D052139:Intracellular Calcium-Sensing Proteins; D008565:Membrane Proteins; C572578:SARAF protein, human; D054467:Phospholipases A2; D002118:Calcium
keywords: Lysophospholipids; Orai1; Phospholipases A2; SOCE; STIM1; TRP channels