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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 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/IntJMedMushrooms.2018025836
pages 321-335

Autophagy Inhibition Enhances SPCA-1 Cell Proliferation Inhibition Induced by By-1 from the Stout Camphor Medicinal Mushroom, Taiwanofungus camphoratus (Agaricomycetes)

Hairui Yang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China; WuXi AppTec Co. Ltd., Shanghai, China
Wenbo Sun
Shandong Provincial Key Laboratory of Animal Disease Control and Breeding, Institute of Animal Science and Veterinary Medicine, Shandong Academy of Agricultural Sciences, Jinan, China
Jinsong Zhang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Yaping Zhang
College of Life Sciences, Shihezi University, Shihezi, China
Henan Zhang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Yan Yang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Di Wu
Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China; National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, China
Yanfang Liu
National Engineering Research Centre of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilisation, Ministry of Agriculture, Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Shanghai, People's Republic of China
Zheng Qiankun
Delisi Co. Ltd., Zhucheng, China
Li Min
Delisi Co. Ltd., Zhucheng, China
Wenhan Wang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Wei Jia
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China

ABSTRACT

Taiwanofungus camphoratus has been reported to have antitumor effects against various cancer cells. The aim of this study was to investigate the direct inhibitory effect of By-1 (3-isobutyl-l-methoxy-4-[4'-(3-methylbut-2-enyloxy)phenyl]-1H-pyrrole-2,5-dione), a compound from spent broth from submerged cultures of T. camphoratus, on human lung adenocarcinoma cells and to determine the molecular mechanism underlying this effect. The growth-inhibitory assay and colony formation assay showed that cell viability was significantly decreased. A By-1 concentration of 300 μmol/L caused 73.55% cell death and at a concentration of 240 μmol/L led to a 58% reduction in the number of colonies. The wound-healing assay showed that the distance of migration was 0.3 times shorter than that of untreated cells. Flow cytometry revealed that By-1 could suppress DNA synthesis, cause cell cycle arrest at the S phase, and induce apoptosis in a reactive oxygen species-dependent manner. Furthermore, the expression of caspase-3 and P53 was 4 times higher than that in untreated cells, and the antiapoptotic protein Bcl-2 was decreased 2 times compared with the protein in untreated cells. It is interesting to note that apoptosis and autophagy were both induced during treatment with By-1, and autophagy inhibition decreased cell proliferation. By-1 potently inhibited the growth of SPCA-1 cells by inducing cell cycle arrest and apoptosis. The combination of proapoptosis agents and antiautophagy agents could effectively enhance anticancer efficacy, which may be a new strategy in treating non-small cell lung cancer.


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