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Zhang RJ, Rao QR, Jiang XQ, Ye N, Li N, Du HL, Zhang SJ, Ye HY, Wu WS, Zhao M. Exploring the Immunomodulatory Properties of Red Onion ( Allium cepa L.) Skin: Isolation, Structural Elucidation, and Bioactivity Study of Novel Onion Chalcones Targeting the A 2A Adenosine Receptor. J Agric Food Chem 2023. [PMID: 37931326 DOI: 10.1021/acs.jafc.3c03851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Onions are versatile and nutritious food widely used in various cuisines around the world. In our ongoing pursuit of bioactive substances with health benefits from red onion (Allium cepa L.) skin, a comprehensive chemical investigation was undertaken. Consequently, a total of 44 compounds, including three previously unidentified chalcones (1-3) were extracted from red onion skin. Of these isolates, chalcones 1-4 showed high affinity to A2A adenosine receptor (A2AAR), and chalcone 2 displayed the best binding affinity to A2AAR, with the IC50 value of 33.5 nM, good A2AAR selectivity against A1AR, A2BAR, and A3AR, and high potency in the cAMP functional assay (IC50 of 913.9 nM). Importantly, the IL-2 bioassay and the cell-mediated cytotoxicity assay demonstrated that chalcone 2 could boost T-cell activation. Furthermore, the binding mechanism of chalcone 2 with hA2AAR was elucidated by molecular docking. This work highlighted that the active chalcones in red onion might have the potential to be developed as A2AAR antagonists used in cancer immunotherapy.
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Affiliation(s)
- Rui-Jia Zhang
- Department of Urology, Institute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Qian-Ru Rao
- Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Xue-Qin Jiang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Neng Ye
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Na Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Hong-Ling Du
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Shun-Jie Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Hao-Yu Ye
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Wen-Shuang Wu
- Division of Thyroid Surgery, Department of General Surgery and Laboratory of Thyroid and Parathyroid Disease, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Min Zhao
- Department of Urology, Institute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
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Surayot U, Wangtueai S, You S, Palanisamy S, Krusong W, Brennan CS, Barba FJ, Phimolsiripol Y, Seesuriyachan P. Extraction, Structural Characterisation, and Immunomodulatory Properties of Edible Amanitahemibapha subspecies javanica (Corner and Bas) Mucilage Polysaccharide as a Potential of Functional Food. J Fungi (Basel) 2021; 7:683. [PMID: 34575721 PMCID: PMC8468940 DOI: 10.3390/jof7090683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/20/2021] [Accepted: 08/20/2021] [Indexed: 12/23/2022] Open
Abstract
This research aimed to extract mucilage polysaccharides (MP) from Amanita hemibapha subspecies javanica (Corner and Bas), and further fractionate them using anion-exchange chromatography, yielding two fractions (MPF1 and MPF2). The crude extract, and fractions mainly consisted of carbohydrates (83.5-93.2%) with minor amounts of proteins (5.40-7.20%), and sulphates (1.40-9.30%). Determination of the monosaccharide composition revealed that glucose was the major unit, followed by galactose, mannose, rhamnose, and arabinose. The average molecular weight (MW) of the crude extract and fractions was in the range 104.0-479.4 × 103 g/mol. Interestingly, the crude extract, and fractions did not cause any toxic effect in RAW264.7 cells. However, they stimulated the RAW264.7 cells to release nitric oxide and cytokines through the activation of nuclear factor-kappa B (NF-κB), and mitogen-activated protein kinase (MAPK) pathways via cell surface TLR4. Structural analysis of the most immunestimulating extract fraction, MPF2, revealed that the main backbone consisted of α-D-(1→6)-glucopyranoside. These results suggest that the MPs derived from A. hemibapha subspecies javanica (Corner and Bas) are potent in enhancing immunity; hence, they can be used as a functional ingredient in food products.
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Affiliation(s)
- Utoomporn Surayot
- College of Maritime Studies and Management, Chiang Mai University, Samut Sakhon 74000, Thailand; (U.S.); (S.W.)
| | - Sutee Wangtueai
- College of Maritime Studies and Management, Chiang Mai University, Samut Sakhon 74000, Thailand; (U.S.); (S.W.)
| | - SangGuan You
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangwon 210-702, Korea; (S.Y.); (S.P.)
- East Coast Life Sciences Institute, Gangneung-Wonju National University, Gangwon 210-720, Korea
| | - Subramanian Palanisamy
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangwon 210-702, Korea; (S.Y.); (S.P.)
- East Coast Life Sciences Institute, Gangneung-Wonju National University, Gangwon 210-720, Korea
| | - Warawut Krusong
- Division of Fermentation Technology, Faculty of Food Industry, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;
| | - Charles S. Brennan
- School of Science, STEM College, RMIT University, Melbourne 3000, Australia;
| | - Francisco J. Barba
- Department of Preventive Medicine and Public Health, Food Science, Toxicology and Forensic Medicine, Faculty of Pharmacy, Universitat de València, Avda. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain;
| | - Yuthana Phimolsiripol
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
- Cluster of Agro Bio-Circular-Green Industry, Chiang Mai University, Chiang Mai 50100, Thailand
| | - Phisit Seesuriyachan
- Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
- Cluster of Agro Bio-Circular-Green Industry, Chiang Mai University, Chiang Mai 50100, Thailand
- Advanced Manufacturing and Management Technology Research Center (AM2Tech), Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
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Joo H, Oh MK, Kang JY, Park HS, Chae DH, Kim J, Lee JH, Yoo HM, Choi U, Kim DK, Lee H, Kim S, Yu KR. Extracellular Vesicles from Thapsigargin-Treated Mesenchymal Stem Cells Ameliorated Experimental Colitis via Enhanced Immunomodulatory Properties. Biomedicines 2021; 9:209. [PMID: 33670708 DOI: 10.3390/biomedicines9020209] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/15/2021] [Accepted: 02/15/2021] [Indexed: 02/08/2023] Open
Abstract
Therapeutic applications of extracellular vesicles (EVs) derived from mesenchymal stem cells (MSCs) have attracted considerable attention because of their immunomodulatory properties against immune-mediated, inflammatory diseases. Here, we demonstrated enhanced immunomodulatory properties of EVs secreted from endoplasmic reticulum (ER) stress inducer thapsigargin (TSG)-primed human Wharton's jelly-derived MSCs (WJ-MSCs). EVs from TSG-primed WJ-MSCs (TSG-EV) showed increased yield and expression of immunomodulatory factors, such as transforming growth factor-β1 (TGFβ), cyclooxygenase-2 (COX2), and especially indoleamine 2,3-dioxygenase (IDO), compared to control EVs. TSG-EV showed a significantly enhanced immunosuppressive effect on human peripheral blood-derived T cell proliferation and Th1 and Th17 differentiation, whereas Treg and M2-type macrophage were enriched compared to a control EV-treated group. Furthermore, TSG-EV substantially mitigated mouse experimental colitis by reducing the inflammatory response and maintaining intestinal barrier integrity. A significant increase of Tregs and M2-type macrophages in colitic colons of a TSG-EV-treated mouse suggests an anti-inflammatory effect of TSG-EV in colitis model, possibly mediated by Treg and macrophage polarization. These data indicate that TSG treatment promoted immunomodulatory properties of EVs from WJ-MSCs, and TSG-EV may provide a new therapeutic approach for treatment of colitis.
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Kang JY, Oh MK, Joo H, Park HS, Chae DH, Kim J, Lee HR, Oh IH, Yu KR. Xeno-Free Condition Enhances Therapeutic Functions of Human Wharton's Jelly-Derived Mesenchymal Stem Cells against Experimental Colitis by Upregulated Indoleamine 2,3-Dioxygenase Activity. J Clin Med 2020; 9:jcm9092913. [PMID: 32927587 PMCID: PMC7565923 DOI: 10.3390/jcm9092913] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 09/05/2020] [Indexed: 12/15/2022] Open
Abstract
The therapeutic applications of mesenchymal stem cells (MSCs) have been actively explored due to their broad anti-inflammatory and immunomodulatory properties. However, the use of xenogeneic components, including fetal bovine serum (FBS), in the expansion media might pose a risk of xenoimmunization and zoonotic transmission to post-transplanted patients. Here, we extensively compared the physiological functions of human Wharton’s jelly-derived MSCs (WJ-MSCs) in a xeno-free medium (XF-MSCs) and a medium containing 10% FBS (10%-MSCs). Both groups showed similar proliferation potential; however, the 10%-MSCs showed prolonged expression of CD146, with higher colony-forming unit-fibroblast (CFU-F) ability than the XF-MSCs. The XF-MSCs showed enhanced adipogenic differentiation potential and sufficient hematopoietic stem cell (HSC) niche activity, with elevated niche-related markers including CXCL12. Furthermore, we demonstrated that the XF-MSCs had a significantly higher suppressive effect on human peripheral blood-derived T cell proliferation, Th1 and Th17 differentiation, as well as naïve macrophage polarization toward an M1 phenotype. Among the anti-inflammatory molecules, the production of indoleamine 2,3-dioxygenase (IDO) and nitric oxide synthase 2 (NOS2) was profoundly increased, whereas cyclooxygenase-2 (COX-2) was decreased in the XF-MSCs. Finally, the XF-MSCs had an enhanced therapeutic effect against mouse experimental colitis. These findings indicate that xeno-free culture conditions improved the immunomodulatory properties of WJ-MSCs and ex vivo-expanded XF-MSCs might be an effective strategy for preventing the progression of colitis.
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Affiliation(s)
- Ji Yeon Kang
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
| | - Mi-Kyung Oh
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
| | - Hansol Joo
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
| | - Hyun Sung Park
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
| | - Dong-Hoon Chae
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
| | - Jieun Kim
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
- Futuristic Animal Resource & Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungcheongbuk-do 28116, Korea
| | - Hae-Ri Lee
- Catholic High-Performance Cell Therapy Center & Department of Medical Life Science, College of Medicine, The Catholic University, Seoul 08826, Korea;
| | - Il-Hoan Oh
- Catholic High-Performance Cell Therapy Center & Department of Medical Life Science, College of Medicine, The Catholic University, Seoul 08826, Korea;
- Correspondence: (I.-H.O.); (K.-R.Y.)
| | - Kyung-Rok Yu
- Department of Medical Life Sciences, College of Medicine, The Catholic University of Korea, Seoul 08826, Korea; (J.Y.K.); (M.-K.O.); (H.J.); (H.S.P.); (D.-H.C.); (J.K.)
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
- Correspondence: (I.-H.O.); (K.-R.Y.)
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Park C, HwangBo H, Lee H, Kim GY, Cha HJ, Choi SH, Kim S, Kim HS, Yun SJ, Kim WJ, Jeon YJ, Choi YH. The immunostimulatory effect of indole-6-carboxaldehyde isolated from Sargassum thunbergii (Mertens) Kuntze in RAW 264.7 macrophages. Anim Cells Syst (Seoul) 2020; 24:233-241. [PMID: 33029301 PMCID: PMC7473310 DOI: 10.1080/19768354.2020.1808529] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Indole-6-carboxaldehyde (I6CA), an indole derivative isolated from the marine brown algae Sargassum thunbergii, is known to have several beneficial effects, but no studies on immune regulation have been conducted. In this study, the immunomodulatory properties of I6CA on murine RAW 264.7 monocyte/macrophage cells were evaluated. As the concentration of I6CA increased, the morphology of RAW 264.7 cells changed to a typical active macrophage shape, and the phagocytic activity increased significantly. I6CA effectively enhanced the production and secretion of immunomodulatory mediators and cytokines due to increased expression of their respective genes. Additionally, I6CA markedly stimulated the expression of Toll-like receptor 4 (TLR4) and its adapter molecule, myeloid differentiation factor 88 (Myd88), and increased TLR4 complexed with Myd88. Furthermore, I6CA promoted the nuclear translocation of nuclear factor-kappa B (NF-κB) by increasing the degradation of the inhibitor of NF-κB-α. Meanwhile, similar trends were also found in lipopolysaccharide-treated cells as a positive control. Furthermore, molecular docking simulation showed that I6CA interacted with TLR4-myeloid differentiation 2 complex. Taken together, the results support the concept that I6CA may increase the activity of the TLR4/NF-κB signaling pathway in order to enhance the immunomodulatory activity of RAW 264.7 cells.
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Affiliation(s)
- Cheol Park
- Division of Basic Sciences, College of Liberal Studies, Dong-eui University, Busan, Republic of Korea
| | - Hyun HwangBo
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
| | - Hyesook Lee
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan, Republic of Korea
| | - Sung Hyun Choi
- Department of System Management, Korea Lift College, Geochang, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, College of Natural Sciences, Pusan National University, Busan, Republic of Korea
| | - Heui-Soo Kim
- Department of Biological Sciences, College of Natural Sciences, Pusan National University, Busan, Republic of Korea
| | - Seok Joong Yun
- Department of Urology, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Wun-Jae Kim
- Department of Urology, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - You-Jin Jeon
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju, Republic of Korea
| | - Yung Hyun Choi
- Anti-Aging Research Center, Dong-eui University, Busan, Republic of Korea.,Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan, Republic of Korea
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Sheu JR, Chen ZC, Hsu MJ, Wang SH, Jung KW, Wu WF, Pan SH, Teng RD, Yang CH, Hsieh CY. CME-1, a novel polysaccharide, suppresses iNOS expression in lipopolysaccharide-stimulated macrophages through ceramide-initiated protein phosphatase 2A activation. J Cell Mol Med 2017; 22:999-1013. [PMID: 29214724 PMCID: PMC5783865 DOI: 10.1111/jcmm.13424] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 09/20/2017] [Indexed: 12/22/2022] Open
Abstract
CME-1, a novel water-soluble polysaccharide purified from Ophiocordyceps sinensis mycelia, has anti-oxidative, antithrombotic and antitumour properties. In this study, other major attributes of CME-1, namely anti-inflammatory and immunomodulatory properties, were investigated. Treating lipopolysaccharide (LPS)-stimulated RAW 264.7 cells with CME-1 concentration-dependently suppressed nitric oxide formation and inducible nitric oxide synthase (iNOS) expression. In the CME-1-treated RAW 264.7 cells, LPS-induced IκBα degradation and the phosphorylation of p65, Akt and mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase, c-Jun N-terminal kinase and p38, were reduced. Treatment with a protein phosphatase 2A (PP2A)-specific inhibitor, significantly reversed the CME-1-suppressed iNOS expression; IκBα degradation; and p65, Akt and MAPK phosphorylation. PP2A activity up-regulation and PP2A demethylation reduction were also observed in the cells. Moreover, CME-1-induced PP2A activation and its subsequent suppression of LPS-activated RAW 264.7 cells were diminished by the inhibition of ceramide signals. LPS-induced reactive oxygen species (ROS) and hydroxyl radical formation were eliminated by treating RAW 264.7 cells with CME-1. Furthermore, the role of ceramide signalling pathway and anti-oxidative property were also demonstrated in CME-1-mediated inhibition of LPS-activated primary peritoneal macrophages. In conclusion, CME-1 suppressed iNOS expression by up-regulating ceramide-induced PP2A activation and reducing ROS production in LPS-stimulated macrophages. CME-1 is a potential therapeutic agent for treating inflammatory diseases.
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Affiliation(s)
- Joen-Rong Sheu
- Department of Pharmacology, School of Medicine, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Medical Sciences, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Zhih-Cherng Chen
- Graduate Institute of Medical Sciences, School of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Cardiology, Chi-Mei Medical Center, Tainan City, Taiwan.,Department of Pharmacy, Chia Nan University of Pharmacy & Science, Tainan City, Taiwan
| | - Ming-Jen Hsu
- Department of Pharmacology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Shwu-Huey Wang
- Core Facility Center, Office of Research and Development, Taipei Medical University, Taipei, Taiwan
| | - Kuo-Wei Jung
- Graduate Institute of Medical Sciences, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wei-Fan Wu
- Graduate Institute of Medical Sciences, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Szu-Han Pan
- Department of Pharmacology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ruei-Dun Teng
- Department of Pharmacology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chih-Hao Yang
- Department of Pharmacology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Cheng-Ying Hsieh
- Department of Pharmacology, School of Medicine, Taipei Medical University, Taipei, Taiwan
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Wu J, Zhou X, Zhang M, Yao Y, Han J, Liu K. Cereus sinensis Polysaccharide and Its Immunomodulatory Properties in Human Monocytic Cells. Mar Drugs 2017; 15:md15050140. [PMID: 28524080 PMCID: PMC5450546 DOI: 10.3390/md15050140] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Revised: 04/24/2017] [Accepted: 05/04/2017] [Indexed: 12/19/2022] Open
Abstract
In this study, the extraction conditions of the crude polysaccharide from Cereus sinensis were optimized by response surface methodology. The optimum extraction conditions were: a ratio of raw material to water volume of 1:80 (g/mL); an extraction temperature of 72 °C; and an extraction time of 3 h. Then, a purified polysaccharide named Cereus sinensis polysaccharide-1 (CSP-1) was obtained from the crude polysaccharide by the Diethylaminoethyl cellulose-52 (DEAE-52) cellulose chromatography column and Sephadex G-100 column. The molecular weight and monosaccharide composition of CSP-1 was determined through Gel Permeation Chromatography (GPC) and Gas Chromatography–Mass Spectrometer (GS–MS), respectively. The results showed that CSP-1 with an average molecular weight of 56,335 Da was composed of l-(−)-Fucose, d-(+)-Mannose, d-Glucose and mainly possessed 1→2, 1→2, 6, 1→4, and 1→4, 6 of glycosyl linkages. The immunomodulatory activities of CSP-1 were also evaluated using lipopolysaccharide (LPS)-induced human monocytic (THP-1) cells. The results demonstrated that CSP-1 dose-dependently protected against LPS-induced toxicity, and CSP-1 significantly inhibited the Toll-like receptor 4 (TLR-4) mRNA, myeloid differentiation factor 88 (MyD88) mRNA and tumour necrosis factor receptor-associated factor-6 (TRAF-6) mRNA expression of the LPS-induced THP-1 cells, as well as suppressing reactive oxygen species (ROS) generation.
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Affiliation(s)
- Junwen Wu
- Department of Biopharmaceutics, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Xuefei Zhou
- Department of Biopharmaceutics, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Min Zhang
- Department of Biopharmaceutics, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Yun Yao
- Department of Biopharmaceutics, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Juanjuan Han
- Department of Biopharmaceutics, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
| | - Kehai Liu
- Department of Biopharmaceutics, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China.
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