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A Decline in p38 MAPK Signaling Underlies Immunosenescence in Caenorhabditis elegans

Figure 4

A gradual reduction in the levels of total and activated PMK-1 protein throughout adulthood in C. elegans.

Immunoblot analysis of total and activated PMK-1 during aging. Total protein isolated from L4 larval stage pmk-1(km25) (lane 1), L4 sek-1(km4) (lane 2) or L4 and adult wild type N2 strain (lanes 3-8) was separated by SDS-PAGE, and immunoblots were decorated with antibodies to either PMK-1 (Total PMK-1), phosphorylated PMK-1 (Active PMK-1) or β-tubulin (Tubulin).

Figure 4