Involvement of extracellular Ca2+ influx through voltage-independent Ca2+ channels in endothelin-1 function.
This article reviews the types and roles of voltage-independent Ca(2+) channels involved in the endothelin-1 (ET-1)-induced functional responses such as vascular contraction, cell proliferation, and intracellular Ca(2+)-dependent signaling pathways and discusses the molecular mechanisms for the activation of voltage-independent Ca(2+) channels by ET-1. ET-1 activates some types of voltage-independent Ca(2+) channels, such as Ca(2+)-permeable nonselective cation channels (NSCCs) and store-operated Ca(2+) channels (SOCC). Extracellular Ca(2+) influx through these voltage-independent Ca(2+) channels plays essential roles in ET-1-induced vascular contraction, cell proliferation, activation of epidermal growth factor receptor tyrosine kinase, regulation of proline-rich tyrosine kinase, and release of arachidonic acid. The experiments using various constructs of endothelin receptors reveal the importance of G(q) and G(12) families in activation of these Ca(2+) channels by ET-1. These findings provide a potential therapeutic mechanism of a functional interrelationship between G(q)/G(12) proteins and voltage-independent Ca(2+) channels in the pathophysiology of ET-1, such as in chronic heart failure, hypertension, and cerebral vasospasm.
Kawanabe
Yoshifumi
Y
Renal Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA. kawanabe@takatsuki.jrc.or.jp
Nauli
Surya M
SM
D000818:Animals; D016718:Arachidonic Acid / Q000378:metabolism; D016466:CHO Cells; D002118:Calcium / Q000378:metabolism*; D015220:Calcium Channels / Q000737:chemistry / Q000378:metabolism / Q000502:physiology*; D049109:Cell Proliferation; D006224:Cricetinae; D019332:Endothelin-1 / Q000378:metabolism*; D004730:Endothelium, Vascular / Q000166:cytology; D066246:ErbB Receptors / Q000378:metabolism; D051417:Focal Adhesion Kinase 1; D051416:Focal Adhesion Protein-Tyrosine Kinases; D044365:GTP-Binding Protein alpha Subunits, G12-G13 / Q000378:metabolism; D043802:GTP-Binding Protein alpha Subunits, Gq-G11 / Q000378:metabolism; D006801:Humans; D008954:Models, Biological; D019869:Phosphatidylinositol 3-Kinases / Q000378:metabolism; D011505:Protein-Tyrosine Kinases / Q000378:metabolism; D044022:Receptor, Endothelin A / Q000737:chemistry / Q000378:metabolism; D015398:Signal Transduction
D015220:Calcium Channels; D019332:Endothelin-1; D044022:Receptor, Endothelin A; D016718:Arachidonic Acid; D019869:Phosphatidylinositol 3-Kinases; D066246:ErbB Receptors; D011505:Protein-Tyrosine Kinases; D051417:Focal Adhesion Kinase 1; D051416:Focal Adhesion Protein-Tyrosine Kinases; C496050:PTK2 protein, human; D044365:GTP-Binding Protein alpha Subunits, G12-G13; D043802:GTP-Binding Protein alpha Subunits, Gq-G11; D002118:Calcium