[Experimental study on MCF-7 cell apoptosis induced by ursolic acid]

Area of Science:

• Molecular Biology
• Cancer Research
• Pharmacology

Context:

• MCF-7 cells, a human breast adenocarcinoma cell line, are widely used in cancer research.
• Apoptosis, or programmed cell death, is a critical mechanism in cancer therapy.
• Ursolic acid (UA) is a naturally occurring pentacyclic triterpene found in various medicinal plants.

Purpose:

• To investigate the effects of ursolic acid (UA) on inducing apoptosis in MCF-7 cells.
• To determine the mechanism by which UA affects MCF-7 cell viability and cell cycle.
• To analyze the role of p53 protein expression in UA-induced apoptosis.

Summary:

• Ursolic acid (UA) demonstrated a dose-dependent inhibition of MCF-7 cell proliferation with an IC50 of 22.6 ± 3.0 µmol/L.
• Cell cycle analysis revealed G0-G1 phase arrest in MCF-7 cells treated with 50 µmol/L UA.
• Morphological and molecular analyses confirmed UA-induced apoptosis, characterized by chromatin condensation, DNA fragmentation, and increased p53 protein expression.

Impact:

• UA treatment leads to significant apoptosis in MCF-7 cells, suggesting its potential as an anti-cancer agent.
• The observed up-regulation of p53 protein correlates with UA-induced apoptosis, highlighting a key molecular pathway.
• This study supports the potential of ursolic acid as a component in traditional Chinese medicine for treating breast neoplasms.