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Iwamoto W, Ikeda T, Nishikawa H, Hirano M, Kinoshita H, Ono M, Kurogi K, Sakakibara Y, Suiko M, Yasuda S. Regulatory effects of antioxidants on indoxyl sulfate-enhanced intracellular oxidation and impaired phagocytic activity in differentiated U937 human macrophage cells. Biosci Biotechnol Biochem 2024; 88:1081-1089. [PMID: 38849302 DOI: 10.1093/bbb/zbae077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 05/28/2024] [Indexed: 06/09/2024]
Abstract
Indoxyl sulfate (IS), a uremic toxin, is a physiologically active sulfated metabolite, specifically in kidney failure patients. Our previous studies have shown that IS downregulates phagocytic immune function in a differentiated HL-60 human macrophage cell model. However, it remains unclear whether IS exerts similar effects on macrophage function in other cell types or in lipopolysaccharide (LPS)-sensitive immune cell models. Therefore, this study aimed to investigate the effects of IS on intracellular oxidation levels and phagocytic activity in a differentiated U937 human macrophage cell model, both in the absence and presence of LPS. Our results demonstrated that IS significantly increases intracellular oxidation levels and decreases phagocytic activity, particularly in cells activated by LPS. Furthermore, we found that 2-acetylphenothiazine, an NADH oxidase inhibitor, attenuates the effects of IS in LPS-activated macrophage cells. Representative antioxidants, trolox, α-tocopherol, and ascorbic acid, significantly mitigated the effects of IS on the macrophages responding to LPS.
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Affiliation(s)
- Wakana Iwamoto
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
| | - Tomohiro Ikeda
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
| | - Hirotaka Nishikawa
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
| | - Masashi Hirano
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
- Department of Food and Life Sciences, School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
| | - Hideki Kinoshita
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
- Department of Food and Life Sciences, School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
| | - Masateru Ono
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
- Department of Food and Life Sciences, School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
| | - Katsuhisa Kurogi
- Department of Biochemistry and Applied Biosciences, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Yoichi Sakakibara
- Department of Biochemistry and Applied Biosciences, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan
| | - Masahito Suiko
- Support Office for the Next Generation Researcher, University of Miyazaki, Miyazaki, Japan
| | - Shin Yasuda
- Graduate School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
- Department of Food and Life Sciences, School of Agriculture, Tokai University, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, Japan
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Liu WJ, Hu ZC, Wu YX, Deng SH, Ren ZL, Dong ZB. Selective Construction of C-S/S-N Bonds from N-Substituted O-Thiocarbamates and Indoles under Transition-Metal-Free Conditions. J Org Chem 2024; 89:4098-4112. [PMID: 38421813 DOI: 10.1021/acs.joc.3c02940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A method for the selective construction of S-N/C(sp2)-S bonds using N-substituted O-thiocarbamates and indoles as substrates is reported. This protocol features good atom utilization, mild conditions, short reaction time, and wide substrate scope, which can provide a convenient path for the functionalization of indoles. In addition, the reaction could be scaled up on gram scale, showing potential application value in industry synthesis.
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Affiliation(s)
- Wen-Jie Liu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhi-Chao Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yu-Xi Wu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Shi-Hao Deng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhi-Lin Ren
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Zhi-Bing Dong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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Morita C, Tokunaga Y, Ueda Y, Ono M, Kinoshita H, Kurogi K, Sakakibara Y, Suiko M, Liu MC, Yasuda S. Investigation of radical scavenging effects of acetaminophen, p-aminophenol and their O-sulfated conjugates. J Toxicol Sci 2022; 47:421-428. [PMID: 36184561 DOI: 10.2131/jts.47.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Acetaminophen (APAP) and p-aminophenol (p-AP) are the analogous simple phenolic compounds that undergo sulfate conjugation (sulfation) by cytosolic sulfotransferases. Sulfation is generally thought to lead to the inactivation and disposal of endogenous as well as xenobiotic compounds. This study aimed to investigate the antioxidative effects of O-sulfated form of APAP and p-AP, i.e., APAPS and p-APS, in comparison with their unsulfated counterparts. Using a 1,1-diphenyl-2-picrylhydrazyl radical scavenging assay, the antioxidant capacity of APAPS was shown to be approximately 126-times lower than that of APAP. In contrast, p-APS displayed comparable activity as unsulfated p-AP. Similar trends concerning the suppressive effects of these chemicals on cellular O2- radical generation were found using an activated granulocytic neutrophil cell model. Collectively, these results indicated that, depending on the presence of an additional "active site", sulfation may not always decrease the antioxidant activities of phenolic compounds.
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Affiliation(s)
| | | | - Yuto Ueda
- Department of Life Science, Shokei University
| | - Masateru Ono
- Graduate School of Agriculture, Tokai University.,Department of Food and Life Sciences (Formerly, Department of Bioscience), School of Agriculture, Tokai University
| | - Hideki Kinoshita
- Graduate School of Agriculture, Tokai University.,Department of Food and Life Sciences (Formerly, Department of Bioscience), School of Agriculture, Tokai University
| | - Katsuhisa Kurogi
- Department of Biochemistry and Applied Biosciences, Faculty of Agriculture, University of Miyazaki
| | - Yoichi Sakakibara
- Department of Biochemistry and Applied Biosciences, Faculty of Agriculture, University of Miyazaki
| | - Masahito Suiko
- Support Office for the Next Generation Researcher, University of Miyazaki
| | - Ming-Cheh Liu
- Department of Pharmacology and Experimental Therapeutics, College of Pharmacy and Pharmaceutical Sciences, The University of Toledo, USA
| | - Shin Yasuda
- Graduate School of Agriculture, Tokai University.,Department of Food and Life Sciences (Formerly, Department of Bioscience), School of Agriculture, Tokai University
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Ganoderma lucidum Spore Polysaccharide Inhibits the Growth of Hepatocellular Carcinoma Cells by Altering Macrophage Polarity and Induction of Apoptosis. J Immunol Res 2021; 2021:6696606. [PMID: 33748291 PMCID: PMC7954632 DOI: 10.1155/2021/6696606] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/02/2021] [Accepted: 02/10/2021] [Indexed: 12/14/2022] Open
Abstract
Background Ganoderma lucidum has certain components with known pharmacological effects, including strengthening immunity and anti-inflammatory activity. G. lucidum seeds inherit all its biological characteristics. G. lucidum spore polysaccharide (GLSP) is the main active ingredient to enhance these effects. However, its specific biological mechanisms are not exact. Our research is aimed at revealing the specific biological mechanism of GLSP to enhance immunity and inhibit the growth of H22 hepatocellular carcinoma cells. Methods We extracted primary macrophages (Mø) from BALB/c mice and treated them with GLSP (800 μg/mL, 400 μg/mL, and 200 μg/mL) to observe its effects on macrophage polarization and cytokine secretion. We used GLSP and GLSP-intervened macrophage supernatant to treat H22 tumor cells and observed their effects using MTT and flow cytometry. Moreover, real-time fluorescent quantitative PCR and western blotting were used to observe the effect of GLSP-intervened macrophage supernatant on the PI3K/AKT and mitochondrial apoptosis pathways. Results In this study, GLSP promoted the polarization of primary macrophages to M1 type and the upregulation of some cytokines such as TNF-α, IL-1β, IL-6, and TGF-β1. The MTT assay revealed that GLSP+Mø at 400 μg/mL and 800 μg/mL significantly inhibited H22 cell proliferation in a dose-dependent manner. Flow cytometry analysis revealed that GLSP+Mø induced apoptosis and cell cycle arrest at the G2/M phase, associated with the expression of critical genes and proteins (PI3K, p-AKT, BCL-2, BAX, and caspase-9) that regulate the PI3K/AKT pathway and apoptosis. GLSP reshapes the tumor microenvironment by activating macrophages, promotes the polarization of primary macrophages to M1 type, and promotes the secretion of various inflammatory factors and cytokines. Conclusion Therefore, as a natural nutrient, GLSP is a potential agent in hepatocellular carcinoma cell treatment and induction of apoptosis.
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