Figure 5

Selumetinib inhibits ERK1/2 phosphorylation in skeletal muscles from LmnaH222P/H222Pmice. Representative immunoblots using antibodies against phosphorylated ERK1/2 (pERK1/2) and total ERK1/2 (ERK1/2) to probe proteins extracts from quadriceps, diaphragm, and tibialis anterior from 20-week-old male LmnaH222P/H222P mice treated with selumetinib or DMSO for 4 weeks. The immunoblot shown is representative of three separately performed experiments.