High Concentrations of Genistein Decrease Cell Viability Depending on Oxidative Stress and Inflammation in Colon...

Area of Science:

• Molecular biology
• Cancer research
• Cell biology

Background:

• Genistein's role in cancer is complex, potentially affecting oxidative stress, mitochondrial biogenesis, and inflammation.
• Its specific impact on colorectal cancer, particularly in primary (HT29) and metastatic (SW620) cells, requires clarification.

Purpose of the Study:

• To investigate the effects of genistein on colon cancer cell viability, oxidative stress, cell cycle, mitochondrial biogenesis, and inflammation.
• To compare genistein's impact on primary (HT29) versus metastatic (SW620) colorectal cancer cells.

Main Methods:

• Genistein treatment of HT29 and SW620 cells.
• Assays for cell viability, hydrogen peroxide (H2O2) production, cell cycle analysis (flow cytometry).
• RT-qPCR and Western blot for gene and protein expression, confocal microscopy for cytoskeleton and NF-κB translocation.

Main Results:

• Genistein (100 µM) decreased viability and induced G2/M arrest in SW620 cells, increasing H2O2 and filopodia.
• HT29 cells showed increased cell death, H2O2, and stress fibers.
• Mitochondrial biogenesis was upregulated in HT29 but downregulated in SW620 cells.
• Inflammation markers and NF-κB nuclear translocation were elevated in both, more so in SW620 cells.

Conclusions:

• High genistein concentrations may exacerbate oxidative stress and inflammation in colon cancer cells.
• Genistein treatment can decrease colon cancer cell viability.
• Differential effects observed between primary and metastatic colon cancer cells warrant further investigation.