Abstract
The research investigated the effect of Patrinia heterophylla Bunge (Valerianaceae) polysaccharides (PHB-P1) on U14-bearing mice. The tumor weight of mice treated with PHB-P1 (30, 60 mg/kg body weight) was significantly lower than that of the control group, a decrease of serum lactate dehydrogenase (LDH) activity was observed, and the serum alkaline phosphatase (AKP) level was increased slightly. The number of apoptotic tumor cells was significantly increased in the mice by treatment of PHB-P1 (30, 60 mg/kgbw). Cell cycle analysis showed the accumulation of tumor cells in the G2/M phase and a relative decrease of the S phase. By the immunohistochemical analysis, PHB-P1 (30, 60 mg/kgbw) might up-regulate the expression of p53 and Bax, and significantly inhibited the expression of Bcl-2 in tumor tissues. In conclusion, PHB-P1 could inhibit tumor growth and induce tumor cell apoptosis.
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