Abstract Volume-sensitive outwardly rectifying anion channels (VSOACs) are expressed in pulmonary artery smooth muscle cells (PASMCs) and have been implicated in cell proliferation, growth, apoptosis and protection against oxidative stress. In this chapter, we review the properties of native VSOACs in PASMCs, and consider the evidence that ClC-3, a member of the ClC superfamily of voltage dependent Cl- channels, may be responsible for native VSOACs in PASMCs. Finally, we examine whether or not native VSOACs and heterologously expressed ClC-3 channels function as bona fide chloride channels or as chloride/proton antiporters.
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Our work was supported by National Institutes of Health grants HL-49254 and P20RR1581 from the National Center for Research Resources.
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Hume, J.R., Wang, GX., Yamazaki, J., Ng, L.C., Duan, D. (2010). CLC-3 Chloride Channels in the Pulmonary Vasculature. In: Yuan, JJ., Ward, J. (eds) Membrane Receptors, Channels and Transporters in Pulmonary Circulation. Advances in Experimental Medicine and Biology, vol 661. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-60761-500-2_15
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