Abstract
Novel proanthocyanidin fractions from grape stem extracts were purified using Amberlite XAD-1180N, Sephadex-LH-20, Toyopearl HW40F and reverse phase high-performance liquid chromatography. Two key compounds were estimated as epigallocatechin-(epicatechin)7 gallate using electron-spray ionization time-of-flight mass spectrometry. Epigallocatechin-(epicatechin)7 gallate (compound 1) showed significant anti-cancer activity in PC-3 prostate cancer cells. In particular, compound 1 suppressed the gene expression of fatty acid-binding protein 5 (FABP5), which is involved in promoting cell proliferation and metastasis in prostate cancer cells.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Antineoplastic Agents, Phytogenic / chemistry*
-
Antineoplastic Agents, Phytogenic / isolation & purification
-
Cell Cycle Checkpoints / drug effects
-
Cell Line, Tumor
-
Cell Proliferation / drug effects
-
Chromatography, High Pressure Liquid
-
Fatty Acid-Binding Proteins / genetics
-
Gene Expression Regulation, Neoplastic / drug effects
-
Humans
-
Magnetic Resonance Spectroscopy
-
Plant Extracts / chemistry*
-
Plant Extracts / isolation & purification
-
Plant Stems / chemistry*
-
Polymers*
-
Proanthocyanidins / chemistry*
-
Proanthocyanidins / isolation & purification
-
Vitis / chemistry*
Substances
-
Antineoplastic Agents, Phytogenic
-
FABP5 protein, human
-
Fatty Acid-Binding Proteins
-
Plant Extracts
-
Polymers
-
Proanthocyanidins
-
proanthocyanidin