title: Antitumor effect of a polysaccharide isolated fromPhellinus pullusas an immunostimulant.
abstract: The antitumor function of fungal polysaccharides is a popular area of interest in the research field due to their high efficiency and low side effects. The main mechanism of fungal polysaccharides is immune enhancement. The polysaccharose (APS-3) was extracted from the fruit body ofPhellinus pullus. The proliferation inhibition to mouse sarcoma 180 (S180) tumor cells was studied by the MTT method. Mice models of transplanted S180 tumor were established and treated with APS-3 to verify the antitumor activityin vivo. Natural killer (NK) and lymphokine-activated killer (LAK) cytotoxicities of the mice were evaluated by the lactate dehydrogenase method. APS-3 can significantly inhibit the proliferation of the S180 cells. Cells could be completely inhibited by 1.6 mg/ml APS-3 after 24 h treatment. After 18 days of treatment, the antitumor rate of the high-dose group was 85.47%. Histopathology detection showed that for the APS-3-treated mice, the tumor cells dissolved, and exhibited a large range of structureless necrotic areas. NK and LAK cytotoxicities of the APS-3 treated mice increased by 61.85 and 56.16%, respectively, compared with the normal control mice. APS-3 can be used as an antitumor agent by way of immune enhancement.
authors.affiliation: Diagnosis Center of Medical Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China.
authors.forename: Weihua
authors.initials: W
authors.lastname: Yang
authors.affiliation: Department of Oncology, The Third People's Hospital of Jinan, Jinan, Shandong 250132, P.R. China; The Institute of Basic Medicine, Shandong Academic of Medicine Science, Jinan, Shandong 250062, P.R. China.
authors.forename: Henglan
authors.initials: H
authors.lastname: Zhang
authors.affiliation: Diagnosis Center of Medical Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China.
authors.forename: Mingyu
authors.initials: M
authors.lastname: Ji
authors.affiliation: Diagnosis Center of Medical Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China.
authors.forename: Fengyan
authors.initials: F
authors.lastname: Pei
authors.affiliation: Diagnosis Center of Medical Laboratory, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China.
authors.forename: Yunshan
authors.initials: Y
authors.lastname: Wang
keywords: Phellinus pullus; S180; antitumor; immune enhancement; polysaccharides