Selective proapoptotic activity of polyphenols from red wine on teratocarcinoma cell, a model of cancer stem-like...

Area of Science:

• * Cancer Biology
• * Pharmacology
• * Molecular Oncology

Background:

• * Cancer stem cells (CSCs) drive tumor initiation and metastasis, making them key therapeutic targets.
• * Lack of reliable CSC models hinders the development of novel anticancer therapies.
• * Teratocarcinoma cells, as malignant totipotent stem cells, serve as a valuable model for CSC research.

Purpose of the Study:

• * To evaluate the chemopreventive activity of red wine polyphenols (RWPs) on cancer stem cells.
• * To elucidate the cellular and molecular mechanisms underlying RWPs' effects.
• * To validate embryonal carcinoma (EC) cell lines as a model for CSC drug screening.

Main Methods:

• * Investigated RWPs' effects on the P19 embryonal carcinoma (EC) cell line, a CSC model.
• * Utilized NIH/3T3 fibroblasts as a normal cell counterpart for comparative analysis.
• * Analyzed cell proliferation, cell cycle progression (G1 arrest), apoptosis, p53 gene expression, and caspase-3 activation.

Main Results:

• * RWPs selectively inhibited P19 EC cell proliferation in a dose-dependent manner.
• * RWPs induced G1 cell cycle arrest in P19 EC cells.
• * RWPs triggered apoptosis in P19 EC cells, associated with p53 upregulation and caspase-3 activation.

Conclusions:

• * RWPs exhibit chemopreventive activity against tumor initiation and development by inhibiting CSC proliferation and inducing apoptosis.
• * The observed effects are mediated through a p53-dependent apoptotic pathway in teratocarcinoma cells.
• * EC cell lines are suitable models for studying CSC responses to potential anticancer agents.