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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Feng, Zifang Wang, Zhixue Yang, Min Zhou, Lijing Bao, Yixi |
| Description | Author Affiliation: Feng Z ( Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China.); Wang Z ( Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China.); Yang M ( Department of Laboratory Medicine, Key Laboratory of Diagnostic Medicine Designated by the Chinese Ministry of Education, Chongqing Medical University, Chongqing 400010, PR China.); Zhou L ( Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China.); Bao Y ( Department of Clinical Laboratory, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, PR China. Electronic address: yixibao111@163.com.) |
| Abstract | AIMS: The present study is to investigate the immunomodulatory mechanism and related pathways of polysaccharopeptide (PSP) in mice bearing Ehrlich's ascites carcinoma (EAC). METHODS: Twelve female wild-type C57 mice were randomly divided into three groups. Another twelve female myeloid differentiation factor 88 (MyD88)-deficient mice were randomly assigned to three groups. Cell survival and peritoneal macrophage phagocytosis were measured using WST8 assay. Nitric oxide concentration was determined by Griess reaction. ELISA was used to measure tumor necrosis factor- and interferon-γ levels. Quantitative real-time PCR was employed to measure mRNA levels. Western blotting was performed to determine protein expression. RESULTS: PSP significantly inhibited the proliferation of EAC cells via macrophage activation. PSP-primed macrophages exhibited a higher tumoricidal activity than untreated macrophages. PSP markedly inhibited the growth of the tumor and increased macrophage phagocytosis, nitric oxide release and cytokine secretion. Expression of MyD88 was markedly increased in PSP-treated groups, while ST2825 inhibited MyD88 signaling and interfered with nitric oxide release and the secretion of tumor necrosis factor- and interferon-γ. Moreover, mRNA and protein levels associated with MyD88-dependent signaling pathway in MyD88-deficient mice group were significantly down-regulated compared with wild-type mice group. CONCLUSIONS: PSP plays an immunoregulatory effect through MyD88-dependent signaling pathway. |
| File Format | HTM / HTML |
| ISSN | 01418130 |
| Volume Number | 82 |
| e-ISSN | 18790003 |
| Journal | International Journal of Biological Macromolecules |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2016-01-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry Immunologic Factors Pharmacology Myeloid Differentiation Factor 88 Metabolism Proteoglycans Signal Transduction Drug Effects Animals Antineoplastic Agents Carcinoma, Ehrlich Tumor Drug Therapy Immunology Pathology Cell Line, Tumor Cytokines Cytotoxicity, Immunologic Disease Models, Animal Female Immunomodulation Macrophages Mice Spleen Thymus Gland Toll-like Receptor 4 Tumor Burden Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Structural Biology Molecular Biology Biochemistry |
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