Polysaccharide peptide isolated from grass-culturedinduces anti-proliferative and pro-apoptotic effects in the human U251 glioma cell line.
Oncol Lett. 2018 Apr ;15(4):4330-4336. Epub 2018 Jan 19. PMID: 29541200
The() mushroom is one of the most extensively studied functional foods, known for its numerous health benefits, including the inhibition of tumor cell growth. The present study assessed the anti-proliferative and pro-apoptotic activity of a novelpolysaccharide peptide (GL-PP) in human glioma U251 cells, which was purified from grass-cultured. GL-PP is a glycopeptide with an average molecular weight of 42,635 Da and a polysaccharide-to-peptide ratio of 88.70:11.30. The polysaccharides were composed of l-arabinose, d-mannose and d-glucose at a molar ratio of 1.329:0.372:2.953 and a total of 17 amino acids were detected. The results of the current study demonstrated that GL-PP significantly inhibited U251 cellular proliferation. The proportion of G/Gphase cells and sub-Gphase cells significantly increased as the concentration of GL-PP increased, as did the activity of caspase-3. These results indicate that GL-PP directly inhibited human glioma U251 proliferation by inducing cell cycle arrest and promoting apoptosis.