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Anticancerous potential of polysaccharides sequentially extracted from Polygonatum cyrtonema Hua in Human cervical
Ling Li1, Kiran Thakur2, Yu-Yao Cao2
1School of life Science, Hefei Normal University, Hefei 230006, People's Republic of China; School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China.
Abstract:
The anticancerous effects of PCHPs (HBSS, CHSS, DASS, and CASS) were investigated on Human cervical cancer Hela cells proliferation inhibition, cytotoxicity, caspase-3 activity, cell cycle, and apoptosis. The inhibition rate was expressed as CASS > HBSS > CHSS > DASS, with the maximum inhibition of 74.453 ± 3.399%. Cell cytotoxicity was observed (CASS > CHSS > HBSS > DASS) with the maximum cell death rate of 82.472 ± 3.488%. The caspase-3 activity was induced by CASS > HBSS > DASS > CHSS, with the maximum multiple of 2.954 ± 0.103. CASS induced cell cycle block at the G2/M phase by elevating mRNA expression of CyclinD1, p21, p53 and Wee1, and lowering the expression of Survivin, CHK2, Wee1, CyclinB1, and CDK-1. CASS enhanced the mRNA expression of DR3, DR5, FasL, FADD, PARP, TNF- α, TNF- R1, TRDAA, caspases-8, caspases-10 and the protein expression of FasL and caspases-8, -10 in the death receptor pathway; while, lowered the mRNA expression of antiapoptotic genes (Bcl - 2 and Bcl-xL) and the protein expression of Bcl - 2. The mRNA expression of apoptosis genes (Bak, Cytc, Puma, and caspases-3, -7, -9) and the protein expression of caspases-3, -9 of mitochondria pathway was up regulated which led to cell apoptosis.
