title: Roles of extracellular nucleotides and P2 receptors in ectodomain shedding.
abstract: Ectodomain shedding of integral membrane receptors results in the release of soluble molecules and modification of the transmembrane portions to mediate or modulate extracellular and intracellular signalling. Ectodomain shedding is stimulated by a variety of mechanisms, including the activation of P2 receptors by extracellular nucleotides. This review describes in detail the roles of extracellular nucleotides and P2 receptors in the shedding of various cell surface molecules, including amyloid precursor protein, CD23, CD62L, and members of the epidermal growth factor, immunoglobulin and tumour necrosis factor families. This review discusses the mechanisms involved in P2 receptor-mediated shedding, demonstrating central roles for the P2 receptors, P2X7 and P2Y2, and the sheddases, ADAM10 and ADAM17, in this process in a number of cell types.
authors.affiliation: School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia.|Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia.|Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.|Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia.
authors.forename: Aleta
authors.initials: A
authors.lastname: Pupovac
authors.affiliation: School of Biological Sciences, University of Wollongong, Wollongong, NSW, 2522, Australia. rsluyter@uow.edu.au.|Centre for Medical and Molecular Bioscience, University of Wollongong, Wollongong, NSW, 2522, Australia. rsluyter@uow.edu.au.|Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia. rsluyter@uow.edu.au.
authors.forename: Ronald
authors.identifier: 0000-0003-4909-686X
authors.initials: R
authors.lastname: Sluyter
mesh_terms: D000818:Animals; D005110:Extracellular Space / Q000378:metabolism*; D006801:Humans; D008954:Models, Biological; D009711:Nucleotides / Q000378:metabolism*; D018048:Receptors, Purinergic P2 / Q000378:metabolism*
chemical_list: D009711:Nucleotides; D018048:Receptors, Purinergic P2
keywords: Extracellular ATP; Extracellular UTP; Metalloprotease; P2X receptors; P2Y receptors; Purinergic signalling