Targeting the protein kinase C family: are we there yet?

Nat Rev Cancer. 2007 Jul;7(7):554-62. doi: 10.1038/nrc2168.


Protein kinase C (PKC) comprises a family of serine/threonine kinases that are involved in the transduction of signals for cell proliferation, differentiation, apoptosis and angiogenesis. Unsurprisingly, disruption of PKC regulation is implicated in tumorigenesis and drug resistance. PKC function is complex in this context owing to the differing roles of individual isozymes within the cell and across tumour types. Therapeutically targeting PKC isozymes is not new; however, with many of the early PKC inhibitor cytotoxic drug combinations being discarded at the phase II level, and recent phase III studies in non-small-cell lung cancer proving negative, what's going wrong?

Publication types

  • Review

MeSH terms

  • Apoptosis
  • Cell Differentiation
  • Cell Division
  • Enzyme Inhibitors / therapeutic use
  • Humans
  • Isoenzymes / metabolism
  • Kinetics
  • Neoplasms / drug therapy
  • Neovascularization, Pathologic
  • Neovascularization, Physiologic
  • Protein Kinase C / antagonists & inhibitors
  • Protein Kinase C / classification
  • Protein Kinase C / metabolism*
  • Signal Transduction


  • Enzyme Inhibitors
  • Isoenzymes
  • Protein Kinase C