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Review
, 11 (2)

The Enigmatic Protein Kinase C-eta

Affiliations
Review

The Enigmatic Protein Kinase C-eta

Alakananda Basu. Cancers (Basel).

Abstract

Protein kinase C (PKC), a multi-gene family, plays critical roles in signal transduction and cell regulation. Protein kinase C-eta (PKCη) is a unique member of the PKC family since its regulation is distinct from other PKC isozymes. PKCη was shown to regulate cell proliferation, differentiation and cell death. It was also shown to contribute to chemoresistance in several cancers. PKCη has been associated with several cancers, including renal cell carcinoma, glioblastoma, breast cancer, non-small cell lung cancer, and acute myeloid leukemia. However, mice lacking PKCη were more susceptible to tumor formation in a two-stage carcinogenesis model, and it is downregulated in hepatocellular carcinoma. Thus, the role of PKCη in cancer remains controversial. The purpose of this review article is to discuss how PKCη regulates various cellular processes that may contribute to its contrasting roles in cancer.

Keywords: PKCη; apoptosis; cell proliferation; differentiation; drug resistance; protein kinase C; senescence; tumor promotion; tumor suppression.

Conflict of interest statement

The author declares no conflict of interest.

Figures

Figure 1
Figure 1
Various functions of protein kinase C-eta (PKCη).

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