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Study on the Enhancing Effect of Polyporus Polysaccharide, Mycobacterium Polysaccharide and Lentinan on Lymphokine-activated Killer Cell Activity in vitro

Author

Li JF

Date

4/1996

Journal

Chung Kuo Chung Hsi I Chieh Ho Tsa Chih

Abstract

The actions of Polyporus polysaccharide (PPS), mycobacterium polysaccharide (MPS) and lentinan (LEN) on lymphokine-activated killer (LAK) cell activity in vitro were investigated in this study. Human peripheral blood mononuclear cells (PBMC) were cultured for 96 hours with medium containing different concentrations of the above-mentioned drugs in combination with recombinant interleukin 2 (rIL-2). Then cell-mediated lysis was determined by 1H-TdR release assay including NK sensitive and NK resistant target cells. The results demonstrated that, when combined with rIL-2 in a certain concentration, all three kinds of polysaccharides could enhance the LAK activity by 42%-56.9%, and reduce the dose of rIL-2 by 50% (P < 0.05-0.01). It suggested that the PPS, MPS and LEN could be used as bioactivity regulators in LAK cell therapy in tumor treatment.

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