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Anti‐colon cancer activity tracking isolation of peptide from ginseng leaves and potential mechanisms evaluation in vitro and in vivo
Journal of Peptide Science  (IF1.905),  Pub Date : 2021-01-18, DOI: 10.1002/psc.3297
Zhuo Liu, Xiaolei Liu, Wei Li, Qiang Luo, Jie Liu, Dongxin Wang

The ginseng has been used for over hundred years, in the belief of promoting longevity. However, the anticancer activity of ginseng leaf peptide (GP) has been never explored. In current study, we isolated the GPs and explored the anti‐colon cancer activity in vitro and in vivo. MTT results showed that the GP‐1 (GP‐1~FKEHGY) performed most antiproliferative activity against colon cancer CT‐26 cells with an IC50 of 86.4 ± 9.46 μM (48 h). Further study indicated that GP‐1 activated the caspases, regulated the p53/murine double minute 2 (MDM2) state, and induced the CT‐26 cells apoptosis in a mitochondrial pathway. Meanwhile, the GP‐1 arrested the CT‐26 cells in G0/G1 phase accompanied with cyclin expression regulation. In addition, GP‐1 significantly suppressed the tumor growth and induced the tumor cells apoptosis in vivo. Notably, the GP‐1 would be a potential anti‐colon cancer candidate.