Administration of polysaccharide from Panax notoginseng prolonged the survival of H22 tumor-bearing mice
Authors Li H, Gu L, Zhong Y, Chen Y, Zhang L, Zhang AR, Sobol RW, Chen T, Li J
Received 17 December 2014
Accepted for publication 7 March 2016
Published 8 June 2016 Volume 2016:9 Pages 3433—3441
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 5
Editor who approved publication: Prof. Dr. Geoffrey Pietersz
Huaiyu Li,1,* Longlong Gu,1,2,* Yuanyuan Zhong,1 Yajuan Chen,1 Lei Zhang,1 Annie R Zhang,3 Robert W Sobol,4,5 Tong Chen,1,6 Jianfeng Li4,5
1Yunnan Key Laboratory of Pharmacology for Natural Products, School of Pharmaceutical Sciences, 2Haiyuan College, Kunming Medical University, Kunming, Yunnan, People’s Republic of China; 3Graduate School of Applied and Professional Psychology, Rutgers, The State University of New Jersey, Piscataway, NJ, 4Department of Oncologic Sciences, 5Mitchell Cancer Institute, University of South Alabama, Mobile, AL, USA; 6Yunnan Panax notoginseng (Burk) F.H. Chen Biotechnology and Pharmaceutical Engineering Research Center, Kunming, Yunnan, People’s Republic of China
*These authors contributed equally to this work
Background: Polysaccharides from various sources are being considered potential sources for the treatment of liver cancer. The aim of this study was to investigate the impact of polysaccharide isolated from Panax notoginseng (PPN) on the proliferation of H22 liver cancer cells and the survival of the tumor-bearing mice transplanted with H22 cells.
Materials and methods: Polysaccharide from PPN was added to the culture medium of mouse hepatoma H22 cells at different doses. Cell proliferation was assayed with a standard MTT assay. Survival rates of tumor-bearing mice were recorded. Peripheral blood lymphocytes were assayed by flow cytometry. Serum interleukin-2 levels in peripheral blood were measured by enzyme-linked immunosorbent assay.
Results: Polysaccharide from PPN inhibited the growth of H22 cells and significantly prolonged the survival of tumor-bearing mice. The increase in activated CD4+ T-cells and the elevation of serum interleukin-2 may contribute to the antitumor activity of PPN.
Conclusion: PPN has potential antitumor activity for the treatment of liver cancer.
Keywords: polysaccharide, Panax notoginseng, liver cancer, immunotherapy, IL-2
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