TY - JOUR
T1 - Expression of protein kinase C gamma promotes cell migration in colon cancer
AU - Dowling, Catríona M.
AU - Hayes, Sheri L.
AU - Phelan, James J.
AU - Cathcart, Mary Clare
AU - Finn, Stephen P.
AU - Mehigan, Brian
AU - McCormick, Paul
AU - Coffey, John C.
AU - O'sullivan, Jacintha
AU - Kiely, Patrick A.
PY - 2017/9/22
Y1 - 2017/9/22
N2 - Despite extensive efforts, Protein Kinase Cs (PKCs) have proven to be an intractable target in cancer therapies. Traditionally it was accepted that PKCs act as tumour promoters, however new research suggests that PKCs may play an important role in the suppression of cancer. A challenge in targeting PKCs is the limited data available in patient samples. One of the PKC isozymes, PKC gamma, is thought to be present only in the brain and has been largely neglected in the context of cancer. Analysis of gene expression levels of PKC gamma in patient matched normal and colon cancer tissue samples revealed an up-regulation of the gene in the cancer tissue of 54% of the patients examined. Mechanistically we demonstrate that a reduction in the levels of PKC gamma in the colon cancer cells inhibits cell migration and foci formation. Further to this, we observe an increase in cell adhesion and proliferation following the reduction of PKC gamma levels in the cell. Thus, PKC gamma plays a key role in colon cancer; making it an important isozyme that needs to be reconsidered in the context of cancer therapies.
AB - Despite extensive efforts, Protein Kinase Cs (PKCs) have proven to be an intractable target in cancer therapies. Traditionally it was accepted that PKCs act as tumour promoters, however new research suggests that PKCs may play an important role in the suppression of cancer. A challenge in targeting PKCs is the limited data available in patient samples. One of the PKC isozymes, PKC gamma, is thought to be present only in the brain and has been largely neglected in the context of cancer. Analysis of gene expression levels of PKC gamma in patient matched normal and colon cancer tissue samples revealed an up-regulation of the gene in the cancer tissue of 54% of the patients examined. Mechanistically we demonstrate that a reduction in the levels of PKC gamma in the colon cancer cells inhibits cell migration and foci formation. Further to this, we observe an increase in cell adhesion and proliferation following the reduction of PKC gamma levels in the cell. Thus, PKC gamma plays a key role in colon cancer; making it an important isozyme that needs to be reconsidered in the context of cancer therapies.
KW - colon cancer
KW - protein kinase C gamma
KW - tumor promoter
UR - http://www.scopus.com/inward/record.url?scp=85032470729&partnerID=8YFLogxK
U2 - 10.18632/oncotarget.18916
DO - 10.18632/oncotarget.18916
M3 - Article
C2 - 29069771
AN - SCOPUS:85032470729
SN - 1949-2553
VL - 8
SP - 72096
EP - 72107
JO - Oncotarget
JF - Oncotarget
IS - 42
ER -