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Wu QC, Zhang YY, Li YB, Alitongbieke G, Xue Y, Li XM, Lin ZC, Huang JF, Pan T, Pan XM, You JP, Lin JM, Pan YT. A novel cell-wall polysaccharide derived from the stipe of Agaricus bisporus inhibits mouse melanoma proliferation and metastasis. Arch Biochem Biophys 2023:109678. [PMID: 37356609 DOI: 10.1016/j.abb.2023.109678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 05/18/2023] [Accepted: 06/22/2023] [Indexed: 06/27/2023]
Abstract
Malignant melanoma is an invasive and highly aggressive skin cancer that-if diagnosed-poses a serious threat to the patient's health and life. In this work, a novel purified cell-wall polysaccharide (termed Abwp) was obtained from the discarded stipe of Agaricus bisporus (A. bisporus) and characterized to be a novel homogeneous polysaccharide consisted of a β-(1 → 4)- glucosyl backbone with β-(1 → 2) and (1 → 6)-d-glucosyl side-chains. The anti-melanoma effects of Abwp and its associated mechanisms in mice were then explored using in vitro and in vivo approaches. In vitro results showed that Abwp inhibited B16 melanoma cell proliferation and promoted their apoptosis in both time- and dose-dependent manners. In B16 cells induced with tumor necrosis factor (TNF-α), Abwp significantly decreased the protein expression of inflammatory-related signaling pathway (e.g., p38 MAPK and NF-κB) in time-, concentration-, and dose-dependent manners. Moreover, Abwp blocked nuclear entry of NF-κB-p65. In an in vivo mouse model featuring neoplasm transplantation with B16 melanoma cells, Abwp significantly inhibited the growth and proliferation of mouse melanoma. Hematoxylin staining showed that the invasion of melanoma cells into the lung tissue of the Abwp-treated group was significantly reduced. Immunohistochemical analysis showed that the expression of proliferation cell nuclear antigen (PCNA), N-cadherin, MMP-9, and Snail in the lung of mouse was significantly inhibited. Immunofluorescence showed that Abwp significantly interfered with the nuclear transcription of NF-κB-p65 in a dose-dependent manner. Collectively, these results showed that Abwp mediated p38 MAPK and NF-κB signaling pathways to inhibit the inflammatory response and malignant proliferation and metastasis of melanoma in mice.
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Affiliation(s)
- Qi-Ci Wu
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China; Fujian Engineering Technology Research Center of Fungal Active Substances, 363000, Zhangzhou, China
| | - Yin-Ying Zhang
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China; Fujian Engineering Technology Research Center of Fungal Active Substances, 363000, Zhangzhou, China
| | - Yun-Bing Li
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China
| | - Gulimiran Alitongbieke
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China
| | - Yu Xue
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China; Fujian Engineering Technology Research Center of Fungal Active Substances, 363000, Zhangzhou, China
| | - Xiu-Min Li
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China
| | - Zhi-Chao Lin
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China; Fujian Engineering Technology Research Center of Fungal Active Substances, 363000, Zhangzhou, China
| | - Jia-Fu Huang
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China
| | - Tao Pan
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China; Mendel (Xiamen) Biotechnology Co., Ltd., 361000, Xiamen, China; Fujian Polysaccharide Biotechnology Co., Ltd., 363000, Zhangzhou, China
| | - Xiao-Ming Pan
- Mendel (Xiamen) Biotechnology Co., Ltd., 361000, Xiamen, China
| | - Jing-Ping You
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China
| | - Jin-Mei Lin
- College of Chemistry, Chemical Engineering and Environment, Minnan Normal University, 363000, Zhangzhou, China.
| | - Yu-Tian Pan
- Engineering Technological Center of Mushroom Industry, Minnan Normal University, 363000, Zhangzhou, China.
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Chen X, He X, Yang YY, Wang Y. Amyotrophic Lateral Sclerosis-Associated Mutants of SOD1 Modulate miRNA Biogenesis through Aberrant Interactions with Exportin 5. ACS Chem Biol 2022; 17:3450-3457. [PMID: 36475596 PMCID: PMC9867941 DOI: 10.1021/acschembio.2c00591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mutations in the SOD1 (superoxide dismutase 1) gene are associated with amyotrophic lateral sclerosis (ALS), a fatal neurodegenerative disease. By employing ascorbate peroxidase-based proximity labeling, coupled with LC-MS/MS analysis, we uncovered 43 and 24 proteins exhibiting higher abundance in the proximity proteomes of SOD1G85R and SOD1G93A, respectively, than that of wild-type SOD1. Immunoprecipitation followed by western blot analysis indicated the preferential binding of one of these proteins, exportin 5 (XPO5), toward the two mutants of SOD1 over the wild-type counterpart. In line with the established function of XPO5 in pre-miRNA transport, we observed diminished nucleocytoplasmic transport of pre-miRNAs in cells with ectopic expression of the two SOD1 mutants over those expressing the wild-type protein. On the other hand, RT-qPCR results revealed significant elevations in mature miRNA in cells expressing the two SOD1 mutants, which are attributed to the diminished inhibitory effect of XPO5 on Dicer-mediated cleavage of pre-miRNA to mature miRNA. Together, our chemoproteomic approach led to the revelation of a novel mechanism through which ALS-associated mutants of SOD1 perturb miRNA biogenesis, that is, through aberrant binding toward XPO5.
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Affiliation(s)
- Xingyuan Chen
- Environmental Toxicology Graduate Program, University of California, Riverside, California 92502, United States
| | - Xiaomei He
- Department of Chemistry, University of California, Riverside, California 92502, United States
| | - Yen-Yu Yang
- Department of Chemistry, University of California, Riverside, California 92502, United States
| | - Yinsheng Wang
- Environmental Toxicology Graduate Program, University of California, Riverside, California 92502, United States
- Department of Chemistry, University of California, Riverside, California 92502, United States
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