Protein kinase C Inhibitors selectively modulate dynamics of cell adhesion molecules and cell death in human colon...

Area of Science:

• Oncology
• Molecular Biology
• Cell Biology

Background:

• Protein Kinase Cs (PKCs) play a role in regulating genes involved in cellular mechanisms during colon cancer development.
• Understanding the role of PKCs in cell adhesion and death pathways is crucial for advancing colorectal cancer therapies.

Purpose of the Study:

• To investigate the impact of Protein Kinase Cs (PKCs) on cell adhesion molecules and their role in colorectal cancer progression.
• To explore the effects of PKC inhibition on colon cancer cell viability, apoptosis, and autophagy.

Main Methods:

• Analysis of cell adhesion molecules (EpCAM, claudins, tetraspanins) and PKC expression.
• Treatment of colon cancer cells with PKC inhibitors at low concentrations.
• Assessment of cell viability using MTT assay.
• Immunoblotting and qRT-PCR to evaluate apoptosis and autophagy.
• Measurement of intracellular Reactive Oxygen Species (ROS), lipid peroxidation, and protein carbonyl levels.

Main Results:

• PKC signaling was found to affect the expression of EpCAM, claudins, and tetraspanins.
• Low concentrations of PKC inhibitors decreased colon cancer cell viability.
• PKC inhibition led to suppressed apoptosis and induced autophagy in colon cancer cells.
• Reduced intracellular ROS, lipid peroxidation, and protein carbonyl levels were observed, supporting the inhibition of ROS-induced apoptosis.

Conclusions:

• PKC signaling is a key regulator of cell adhesion dynamics in colorectal cancer.
• PKC inhibition modulates cell death mechanisms, including apoptosis and autophagy.
• These findings highlight the potential of targeting PKC signaling for colorectal cancer treatment.