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International Journal of Medicinal Mushrooms
Facteur d'impact: 1.423 Facteur d'impact sur 5 ans: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.2018028823
pages 1173-1183

Antiproliferative Effects of a Triterpene-Enriched Extract from Lingzhi or Reishi Medicinal Mushroom, Ganoderma lucidum (Agaricomycetes), on Human Lung Cancer Cells

Sanda Zolj
Department of Biology, Bellarmine University, Louisville, KY, USA
Melissa P. Smith
Department of Biology, Bellarmine University, Louisville, KY, USA
Jillian C. Goines
Department of Biology, Bellarmine University, Louisville, KY, USA
T'Shura S. Ali
Department of Biology, Bellarmine University, Louisville, KY, USA
Mary O. Huff
Department of Biology, Bellarmine University, Louisville, KY, USA
David L. Robinson
Department of Biology, Bellarmine University, Louisville, KY, USA
Joann M. Lau
Department of Biology, Bellarmine University, Louisville, KY, USA

RÉSUMÉ

Ganoderma lucidum, a mushroom that has been used to treat disease in East Asia for centuries, has been shown to be effective against many types of tumors, but the exact cellular mechanism of action is unknown. In this study we examined proliferation of a lung cancer cell line after treatment with 12 concentrations of powdered G. lucidum for 24, 48, and 120 hours. Based on half-maximal inhibitory concentrations values, proliferation of the H1793 cell line seemed to be sensitive to the extract in a time- and dose-dependent manner. We used immunoblot analysis to examine the amounts of cell cycle proteins (cyclin D, Cdk4, and Cdc2) and apoptotic proteins (Bcl-xL and Bax) after treatment with a range of G. lucidum concentrations. Changes in amounts of proteins that regulate the cell cycle were consistent with longer G1 and G2 phases. Proapoptotic protein (Bax) levels increased 6.5-fold, with a commensurate increase in the Bax-to-Bcl ratio, especially at 48 and 120 hours. These results suggest that the decrease in cellular proliferation correlated with a change in both cell cycle progression and apoptosis, and that the triterpenoid in G. lucidum is the bioactive component. Further biochemical characterization of this ancient herbal remedy could hold promise for treating lung cancer.


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