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International Journal of Medicinal Mushrooms
IF: 1.211 5-Year IF: 1.394 SJR: 0.433 SNIP: 0.661 CiteScore™: 1.38

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v8.i4.20
pages 315-320

Immunomodulatory Effects of Ganoderma lucidum (W. Curt.:Fr.) P. Karst. (Aphyllophoromycetideae) on CD4+/CD8+ Tumor Infiltrating Lymphocytes in Breast-Cancer-Bearing Mice

Shafi Mojadadi
Department of Immunology, School of Medical Sciences, Tarbiat Modares University, P.O. Box: 14115-111, Tehran; and Department of Microbiology & Immunology, School of Medicine, Kerman Medical University, Kerman, Iran
Massoumeh Ebtekar
Department of Immunology, School of Medical Sciences, Tarbiat Modares University, P.O. Box: 14115-111, Tehran, Iran
Zuhair Mohammad Hassan
Department of Immunology, School of Medical Sciences, Tarbiat Modares University, P.O. Box: 14115-111, Tehran, Iran

ABSTRACT

Ganoderma lucidum (Basidiomycetes) has been recognized as an immunomodulatory natural product. This study was performed in order to investigate the effects of G. lucidum polysaccharide (GL-PS) extract on tumor volume and T(CD4+/CD8+) ratio of tumor infiltrating lymphocytes (TILs) in breast cancer bearing mice. Initially, we performed the DTH (delayed type hypersensitivity) test for obtaining the most effective dose of GL-PS extract on induction of cell-mediated immune response. Then, we evaluated the effect of this dose on tumor volume and CD4+/CD8+ T subpopulations that infiltrated into cancerous breast tissue. Results indicated that GL-PS 100 mg/kg/day could effectively increase DTH response against sRBC in BALB/c mice. Furthermore, intraperitoneal injection of this extract in breast cancer bearing mice could increase T-cell infiltration into the tumor. Also, there was a significant increase in the CD4+/CD8+ ratio in tumor infiltrating lymphocytes as well as a decrease in tumor volume. We concluded that GL-PS can exhibit a potent immunomodulatory effect and may be used for potentiation of the immune system against diseases such as cancer and other conditions in which the immune response has been compromised.