Goal
Inhibit breast cancer tumor growth and metastasis and provide a chemopreventive dietary supplement.
Problem
Breast cancer proliferation and spread (metastasis).
Concept Summary
Peach-derived polyphenolic compounds, when administered as an extract or dietary supplement, reduce tumor growth, suppress lung metastasis, and inhibit angiogenesis in mouse xenograft models. The effect is mediated through antioxidant activity, inhibition of metalloproteinase gene expression, and induction of apoptosis in cancer cells.
Detailed Description
The research involved feeding mice xenografted with MDA-MB-435 breast cancer cells with varying doses of peach polyphenols (0.8-1.6 mg/day). High-dose groups showed smaller tumors, fewer lung metastases, reduced blood-vessel formation, and lower expression of metalloproteinases (MMP-2, MMP-3, MMP-13). In vitro studies demonstrated dose-dependent cytotoxicity against cancer cell lines while sparing normal breast cells. The human-equivalent dose was estimated at ~370 mg/day, corresponding to two to three fresh peaches or a powdered supplement.
Principles
- Antioxidant activity
- Inhibition of metalloproteinase gene expression
- Anti-proliferative cytotoxicity
- Apoptosis induction
Scientific Domains
Materials
- Peach polyphenols
- Quercetin 3-beta-glucoside
- Chlorogenic acid
- Neo-chlorogenic acid
- Procyanidins
- Anthocyanins
Mechanisms of Action
- DNA protection via antioxidant polyphenols
- Suppression of tumor-associated metalloproteinases
- Induction of cancer cell apoptosis
- Inhibition of angiogenesis
Applications
- Cancer prevention
- Adjunct therapy for breast cancer
- Dietary supplement for chemoprevention
Claimed Performance
Tumor growth and lung metastasis inhibited in mice at 0.8-1.6 mg/day of peach polyphenols; human equivalent dose ~370 mg/day (~=2-3 peaches).
Experimental Evidence
In vivo mouse xenograft study (MDA-MB-435) and multiple in vitro cell-line assays (MDA-MB-435, MCF-7, MCF-10A, colon cancer lines).
Limitations
- No human clinical trial data
- Bioavailability of polyphenols not quantified
- Dosage translation from mice to humans uncertain
