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International Journal of Medicinal Mushrooms

Impact factor: 1.357

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

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushr.v13.i5.20
pages 427-440

Antitumor Effect of Culinary-Medicinal Oyster Mushroom, Pleurotus ostreatus (Jacq.: Fr.) P. Kumm., Derived Protein Fraction on Tumor-Bearing Mice Models

Swatilekha Maiti
Department of Biotechnology, Indian Institute of Technology, Kharagpur, India
Sanjaya Kumar Mallick
Department of Biotechnology, Indian Institute of Technology, Kharagpur, India
Sujit Kumar Bhutia
Department of Biotechnology, Indian Institute of Technology, Kharagpur, India
Birendra Behera
Department of Biotechnology, Indian Institute of Technology, Kharagpur, India
Mohitosh Mandal
School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, India
Tapas K Maiti
Department of Biotechnology, Indian Institute of Technology Kharagpur, India

ABSTRACT

Previously, we reported the in vitro anticancer and immunomodulatory effect of a protein fraction designated as Cibacron blue affinity purified protein (CBAEP) obtained from the culinary-medicinal oyster mushroom, Pleurotus ostreatus. In the present study, we investigated the in vivo antitumor potential of CBAEP in different tumor-bearing mice models and studied the detailed mechanism of tumor regression in Dalton lymphoma (DL)-bearing mice. The lethal dose (LD50) of CBAEP was found to be 55 mg/kg body weight and sublethal doses (5 mg/kg and 10 mg/kg body weight) showed a prolonged tumor survival time in DL, Sarcoma-180, and B16F0 melanoma tumor-bearing mice. Further, CBAEP reduced about 35.68 and 51.43% DL cell growth in 5 and 10 mg/kg body weight, respectively. The in vivo CBAEP treatment showed an apoptotic feature as demonstrated in morphological study and sub-G0/G1 population in cell cycle and Western blot of DL cells. CBAEP also activated immunosuppression condition in DL tumor-bearing host. It also stimulated immune cells in the presence of nonspecific immunostunulator (LPS and ConA) ex vivo as well as enhanced Th1 response with production of TNF-α, IFN-γ, and IL-2. Moreover, it activated tumor-associated macrophages and NK cells. The present findings revealed the potent antitumor property of CBAEP, which might help in developing a new anticancer drug.