Protein kinase C (PKC) and mitogen-activated protein kinase (MAPK) signaling proteins (PKC/MAPK)

Protein kinase C (PKC) and mitogen-activated protein kinase (MAPK) signaling proteins are two distinct but highly interconnected families of serine/threonine kinases that mediate vital cellular processes (PMID: 22123811). The PKC family, which includes multiple isoforms like alpha, beta, and delta, is primarily activated by lipid-derived second messengers and calcium to regulate cell polarity, transport, and survival (UniProt P17252). The MAPK signaling cascade, particularly the Raf-MEK-ERK pathway, serves as a central conduit for growth factor signaling, controlling cell proliferation and differentiation (PMID: 17327480). PKC isoforms often act upstream of the MAPK cascade, where they can directly phosphorylate and activate Raf-1, creating a synergistic signaling network (PMID: 10748117). Dysregulation of these pathways is a major driver in various cancers, inflammatory diseases, and cardiovascular disorders, making them significant therapeutic targets (PMID: 28211444). While drugs like midostaurin (targeting PKC) and trametinib (targeting MEK) have been developed, the complexity and crosstalk between these proteins often lead to therapeutic challenges such as drug resistance and off-target toxicities (PMID: 24204714).

Other names

PKC-MAPK pathwayProtein kinase C and MAPK cascadePKC and mitogen-activated protein kinase signaling

Inhibition of serine/threonine kinase activity to disrupt downstream phosphorylation cascades and modulate gene expression.