Kidney-Specific Membrane-Bound Serine Proteases CAP1/Prss8 and CAP3/St14 Affect ENaC Subunit Abundances but Not Its Activity

نویسندگان

چکیده

The serine proteases CAP1/Prss8 and CAP3/St14 are identified as ENaC channel-activating in vitro, highly suggesting that they required for proteolytic activation of vivo. present study tested whether is relevant renal affects ENaC-mediated Na+ absorption following deprivation conditions. knockout mice exhibit a significant decrease protein expression with altered subunit decreased pNCC abundances but overall maintain sodium balance. RNAscope-based analyses reveal co-expression alpha distal tubules the cortex from wild-type mice. Double CAP1/Prss8; CAP3/St14-deficiency maintained K+ balance on Na+-deprived diet, restored showed reduced NCC activity under deprivation. Overall, our data clearly show not direct its abundance. Our reveals complex regulation by these level rather than activation.

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ژورنال

عنوان ژورنال: Cells

سال: 2023

ISSN: ['2073-4409']

DOI: https://doi.org/10.3390/cells12192342