Cathrine Nordgaard, Anna Constance Vind, Amy Stonadge, Rasmus Kjøbsted, Goda Snieckute, Pedro Antas, Melanie Blasius, Marie Sofie Reinert, Ana Martinez Del Val, Dorte Breinholdt Bekker-Jensen, Peter Haahr, Yekaterina A Miroshnikova, Abdelghani Mazouzi, Sarah Falk, Emeline Perrier-Groult, Christopher Tiedje, Xiang Li, Jens Rithamer Jakobsen, Nicolas Oldenburg Jørgensen, Jørgen Fp Wojtaszewski, Frederic Mallein-Gerin, Jesper Løvind Andersen, Cristian Pablo Pennisi, Christoffer Clemmensen, Moustapha Kassem, Abbas Jafari, Thijn Brummelkamp, Vivian Sw Li, Sara A Wickström, Jesper Velgaard Olsen, Gonzalo Blanco, Simon Bekker-Jensen
Mechanical inputs give rise to p38 and JNK activation, which mediate adaptive physiological responses in various tissues. In skeletal muscle, contraction-induced p38 and JNK signaling ensure adaptation to exercise, muscle repair, and hypertrophy. However, the mechanisms by which muscle fibers sense mechanical load to activate this signaling have remained elusive. Here, we show that the upstream MAP3K ZAKβ is activated by cellular compression induced by osmotic shock and cyclic compression in vitro, and muscle contraction in vivo...
July 28, 2022: EMBO Journal