PPP1R12C Promotes Atrial Hypocontractility in Atrial Fibrillation

CONCLUSIONS: Patients with AF exhibit increased levels of PPP1R12C protein compared with controls. PPP1R12C overexpression in mice increases PP1c targeting to MLC2a and causes MLC2a dephosphorylation, which reduces atrial contractility and increases AF inducibility. These findings suggest that PP1 regulation of sarcomere function at MLC2a is a key determinant of atrial contractility in AF.PMID:37737016 | DOI:10.1161/CIRCRESAHA.123.322516

Source: Circulation Research - September 22, 2023 Category: Cardiology Authors: Srikanth Perike Francisco J Gonzalez-Gonzalez Issam Abu-Taha Frederick W Damen Laurin M Hanft Ken S Lizama Anahita Aboonabi Andrielle E Capote Yuriana Aguilar-Sanchez Benjamin Levin Zhenbo Han Arvind Sridhar Jacob Grand Jody Martin Joseph G Akar Chad M Wa Source Type: research