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Updated: Mar 26, 2026

Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
Protein Kinase D Enzymes as Regulators of EMT and Cancer Cell Invasion
Nisha Durand1, Sahra Borges2, Peter Storz3
1Department of Cancer Biology, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA. durand.nisha@mayo.edu.
Abstract:
The Protein Kinase D (PKD) isoforms PKD1, PKD2, and PKD3 are effectors of the novel Protein Kinase Cs (nPKCs) and diacylglycerol (DAG). PKDs impact diverse biological processes like protein transport, cell migration, proliferation, epithelial to mesenchymal transition (EMT) and apoptosis. PKDs however, have distinct effects on these functions. While PKD1 blocks EMT and cell migration, PKD2 and PKD3 tend to drive both processes. Given the importance of EMT and cell migration to the initiation and progression of various malignancies, abnormal expression of PKDs has been reported in multiple types of cancers, including breast, pancreatic and prostate cancer. In this review, we discuss how EMT and cell migration are regulated by PKD isoforms and the significance of this regulation in the context of cancer development.
Insights
Protein Kinase D (PKD) isoforms have distinct roles in cell migration and epithelial to mesenchymal transition (EMT). Understanding these roles is crucial, as dysregulated PKD expression is linked to cancer progression.
Area of Science:
- Molecular Biology
- Cell Biology
- Oncology
Background:
- Protein Kinase D (PKD) isoforms (PKD1, PKD2, PKD3) are downstream effectors of novel Protein Kinase Cs (nPKCs) and diacylglycerol (DAG).
- PKDs regulate critical cellular functions including protein transport, cell migration, proliferation, epithelial to mesenchymal transition (EMT), and apoptosis.
- Distinct roles of PKD isoforms in cellular processes are emerging, with PKD1 inhibiting EMT and cell migration, while PKD2 and PKD3 promote these processes.
Purpose of the Study:
- To review the regulatory mechanisms of EMT and cell migration by PKD isoforms.
- To elucidate the significance of PKD-mediated regulation in cancer development.
Main Methods:
- Literature review focusing on studies investigating PKD isoforms, EMT, cell migration, and cancer.
- Analysis of experimental data and findings from published research.
Main Results:
- PKD isoforms exhibit differential regulation of EMT and cell migration.
- PKD1 acts as an inhibitor of EMT and cell migration.
- PKD2 and PKD3 function as promoters of EMT and cell migration.
Conclusions:
- Aberrant expression of PKD isoforms is implicated in various cancers, including breast, pancreatic, and prostate cancer.
- The distinct roles of PKD isoforms in EMT and cell migration highlight their importance in cancer initiation and progression.
- Targeting PKD isoforms may offer therapeutic strategies for managing malignancies associated with altered EMT and cell migration.
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