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Lv Y, Yang Y, Chen Y, Wang D, Lei Y, Pan M, Wang Z, Xiao W, Dai Y. Structural characterization and immunomodulatory activity of a water-soluble polysaccharide from Poria cocos. Int J Biol Macromol 2024; 261:129878. [PMID: 38309394 DOI: 10.1016/j.ijbiomac.2024.129878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/14/2024] [Accepted: 01/30/2024] [Indexed: 02/05/2024]
Abstract
In order to investigate the structural characteristics and immunomodulatory effects of Poria cocos polysaccharides, a water-soluble homogeneous polysaccharide (PCP-2) was isolated by water extraction and alcohol precipitation and further purified by Cellulose DEAE-52 and Sephacryl S-100HR column chromatography. PCP-2 is a heteropolysaccharide composed of glucose, galactose, mannose, and fucose in a molar ratio of 42.0: 35.0: 13.9: 9.1. It exhibits a narrow molecular weight distribution at 2.35 kDa with a branching degree of 37.1 %. The main chain types of PCP-2 include 1,3-β-D-Glc and 1,6-β-D-Glc as the backbone glucans and 1,6-α-D-Gal as the backbone heterogalactan. In vitro experiments demonstrate that PCP-2 directly stimulate RAW264.7 cell proliferation and secretion of inflammatory factors such as NO and TNF-α. In cyclophosphamide (CTX)-induced mice, it promotes the development of thymus and spleen immune organs, elevates the blood levels of IgG, IgA, IgM and CD3+CD4+ T cells, increases the intestinal villus height/ crypt depth ratio and improves gut barrier dysfunctions. These findings suggest that PCP-2 is a natural fungal polysaccharide with broad spectrum of immunoenhancing effects, which can significantly ameliorate the immunocompromised state.
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Affiliation(s)
- Yaozhong Lv
- State Key Laboratory of Food Nutrition and Safety, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China; National Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, Lianyungang, Jiangsu 222001, China
| | - Yajun Yang
- State Key Laboratory of Food Nutrition and Safety, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Ying Chen
- National Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, Lianyungang, Jiangsu 222001, China; Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, Jiangsu 222001, China
| | - Dongfan Wang
- National Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, Lianyungang, Jiangsu 222001, China; Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, Jiangsu 222001, China
| | - Yipeng Lei
- Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, Jiangsu 222001, China
| | - Mingyue Pan
- Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, Jiangsu 222001, China
| | - Zhenzhong Wang
- National Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, Lianyungang, Jiangsu 222001, China; Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, Jiangsu 222001, China
| | - Wei Xiao
- National Key Laboratory on Technologies for Chinese Medicine Pharmaceutical Process Control and Intelligent Manufacture, Lianyungang, Jiangsu 222001, China; Jiangsu Kanion Pharmaceutical Co., Ltd, Lianyungang, Jiangsu 222001, China.
| | - Yujie Dai
- State Key Laboratory of Food Nutrition and Safety, College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China.
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2
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Fan X, Xiao X, Yu W, Yu B, He J, Zheng P, Yu J, Luo J, Luo Y, Yan H, Wang J, Wu A, Wang Q, Wang H, Mao X. Yucca schidigera purpurea-sourced arabinogalactan polysaccharides augments antioxidant capacity facilitating intestinal antioxidant functions. Carbohydr Polym 2024; 326:121613. [PMID: 38142074 DOI: 10.1016/j.carbpol.2023.121613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 11/12/2023] [Accepted: 11/16/2023] [Indexed: 12/25/2023]
Abstract
This study isolated and purified a novel homogeneous arabinogalactan polysaccharide from Yucca schidigera extract (YSE), unveiled its unique structure and explored its antioxidant function. Firstly, the antioxidant potential of YSE was demonstrated in piglet trials. A homogeneous polysaccharide with a molecular weight of 24.2 kDa, designated as Yucca schidigera polysaccharide B (YPB), was isolated and purified from YSE. The monosaccharide composition of YPB was Rha, Araf, Galp, and Glcp, whose molar percentages were 2.8 %, 11.6 %, 45.5 %, and 40.0 %, respectively. Methylation analysis combined with 1D and 2D nuclear magnetic resonance showed that YPB was a complex polysaccharide with a main glycosidic linkage pattern of →2)-α-ʟ-Rha-(1 → 3)-β-ᴅ-Galp-(1→3)-β-ᴅ-Galp-(1 → 3)-β-ᴅ-Galp-(1 → 3)-β-ᴅ-Glcp-(1→, and branched Araf and Galp fragments were connected with the main chain through →3,6)-β-ᴅ-Galp-(1→, →3,4)-β-ᴅ-Glcp-(1→, and →2,4)-α-ʟ-Rha-(1→ linkages. Following the in vitro biochemical assays of bioactive components, YPB should be the contributor to the antioxidant activity in YSE. Based on the establishment of oxidative stress model, YPB exhibited strong antioxidant capacity and activated NRF2 pathway, and then provided protection against the damage induced oxidative stress in IPEC-J2 cells and rats. Further analysis with inhibitors found that this antioxidant effect was attributed to its interaction with epidermal growth factor receptor and mannose receptor, and stimulating PI3K/AKT pathway.
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Affiliation(s)
- Xiangqi Fan
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Xiangjun Xiao
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Wei Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Bing Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Jun He
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Ping Zheng
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Jie Yu
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Junqiu Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Yuheng Luo
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Hui Yan
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Jiangping Wang
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Aimin Wu
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Quyuan Wang
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Huifen Wang
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China
| | - Xiangbing Mao
- Institute of Animal Nutrition, Sichuan Agricultural University, Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Key laboratory of Animal Disease-resistant Nutrition and Feed of China Ministry of Agriculture and Rural Affairs, Key laboratory of Animal Disease-resistant Nutrition of Sichuan Province, Chengdu 611130, People's Republic of China.
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Ollivier S, Legentil L, Yeni O, David LP, Ferrières V, Compagnon I, Rogniaux H, Ropartz D. Gas-Phase Behavior of Galactofuranosides upon Collisional Fragmentation: A Multistage High-Resolution Ion Mobility Study. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:627-639. [PMID: 36971653 DOI: 10.1021/jasms.2c00333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Carbohydrates are ubiquitous in nature but are among the least conserved biomolecules in life. These biopolymers pose a particular challenge to analytical chemists because of their high diversity and structural heterogeneity. In addition, they contain many isomerisms that complicate their structural characterization, notably by mass spectrometry. The tautomerism of the constitutive subunits is of particular interest. A given cyclized monosaccharide unit can take two forms: a most common 6-membered ring (pyranose, p) and a more flexible 5-membered ring (furanose, f). The tautomers impact the biological properties of polysaccharides, resulting in interesting properties of the derived oligosaccharides. From an analytical point of view, the impact of tautomerism on the gas-phase behavior of ions has scarcely been described in the literature. In this work, we study the behavior of Galf-containing oligosaccharides, ionized as [M+Li]+ species, under collisional dissociation (CID) conditions using high-resolution and multistage ion mobility (IMS) on a Cyclic IMS platform. In the first part of this work, we studied whether disaccharidic fragments released from Galf-containing (Gal)1(Man)2 trisaccharides (and their Galp counterpart) would match the corresponding disaccharide standards, and─despite the fragments generally being a good match─we showed the possibility of Galf migrations and other unidentified alterations in the IMS profile. Next, we expanded on these unknown features using multistage IMS and molecular dynamics, unveiling the contributions of additional gas-phase conformers in the profile of fragments from a Galf-containing trisaccharide compared with the corresponding disaccharides.
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Affiliation(s)
- Simon Ollivier
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, PROBE Research Infrastructure, BIBS Facility, F-44316 Nantes, France
| | - Laurent Legentil
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS ISCR-UMR 6226, F-35000 Rennes, France
| | - Oznur Yeni
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - Louis-Philippe David
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS ISCR-UMR 6226, F-35000 Rennes, France
| | - Vincent Ferrières
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS ISCR-UMR 6226, F-35000 Rennes, France
| | - Isabelle Compagnon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - Hélène Rogniaux
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, PROBE Research Infrastructure, BIBS Facility, F-44316 Nantes, France
| | - David Ropartz
- INRAE, UR BIA, F-44316 Nantes, France
- INRAE, PROBE Research Infrastructure, BIBS Facility, F-44316 Nantes, France
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4
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Wei M, Geng L, Wang Q, Yue Y, Wang J, Wu N, Wang X, Sun C, Zhang Q. Purification, characterization and immunostimulatory activity of a novel exopolysaccharide from Bacillus sp. H5. Int J Biol Macromol 2021; 189:649-656. [PMID: 34450152 DOI: 10.1016/j.ijbiomac.2021.08.159] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 02/07/2023]
Abstract
Crude exopolysaccharides from extracellular polymeric substances produced by the marine bacterium Bacillus sp. H5 were fractionated using DEAE-Sepharose FF and Sephadex G-75 chromatography. The high molecular weight fraction (89.0 kD) from the neutral fraction was designated EPS5SH; it contained mannose, glucosamine, glucose, and galactose in a molar ratio of 1.00: 0.02: 0.07: 0.02. Infra-red, gas chromatography-mass spectrometry, electrospray ionisation-tandem mass spectrometry analysis and nuclear magnetic resonance revealed EPS5SH was a mannan with α-(1 → 4)-Manp, α-(1 → 2)-Manp, α-(1 → 4, 6)-Manp and β-terminal-Manp. Preliminary in vitro experiments revealed that EPS5SH significantly upregulated nitric oxide synthesis and release of pro-inflammatory factors in murine macrophage RAW264.7 cells. Western blot experiments verified the immunostimulatory effects of EPS5SH through the modulation of the NF-κB and MAPK signalling pathways. In conclusion, EPS5SH was a novel immunostimulatory mannan.
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Affiliation(s)
- Maosheng Wei
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Lihua Geng
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| | - Qingchi Wang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yang Yue
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jing Wang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ning Wu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiaoqing Wang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; University of Chinese Academy of Sciences, Beijing, China
| | - Chaomin Sun
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Quanbin Zhang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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5
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Favreau B, Yeni O, Ollivier S, Boustie J, Dévéhat FL, Guégan JP, Fanuel M, Rogniaux H, Brédy R, Compagnon I, Ropartz D, Legentil L, Ferrières V. Synthesis of an Exhaustive Library of Naturally Occurring Gal f-Man p and Gal p-Man p Disaccharides. Toward Fingerprinting According to Ring Size by Advanced Mass Spectrometry-Based IM-MS and IRMPD. J Org Chem 2021; 86:6390-6405. [PMID: 33877829 DOI: 10.1021/acs.joc.1c00250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Nature offers a huge diversity of glycosidic derivatives. Among numerous structural modulations, the nature of the ring size of hexosides may induce significant differences on both biological and physicochemical properties of the glycoconjugate of interest. On this assumption, we expect that small disaccharides bearing either a furanosyl entity or a pyranosyl residue would give a specific signature, even in the gas phase. On the basis of the scope of mass spectrometry, two analytical techniques to register those signatures were considered, i.e., the ion mobility (IM) and the infrared multiple photon dissociation (IRMPD), in order to build up cross-linked databases. d-Galactose occurs in natural products in both tautomeric forms and presents all possible regioisomers when linked to d-mannose. Consequently, the four reducing Galf-Manp disaccharides as well as the four Galp-Manp counterparts were first synthesized according to a highly convergent approach, and IM-MS and IRMPD-MS data were second collected. Both techniques used afforded signatures, specific to the nature of the connectivity between the two glycosyl entities.
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Affiliation(s)
- Bénédicte Favreau
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Oznur Yeni
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Simon Ollivier
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Joël Boustie
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Françoise Le Dévéhat
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Jean-Paul Guégan
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Mathieu Fanuel
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Hélène Rogniaux
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Richard Brédy
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Isabelle Compagnon
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - David Ropartz
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Laurent Legentil
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
| | - Vincent Ferrières
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France.,Université de Lyon, CNRS, Université Claude Bernard Lyon 1, CNRS, Institut Lumiére Matiére, F-69622 Lyon, France.,INRAE, UR BIA, F-44316 Nantes, France, and.,INRAE, BIBS Facility, F-44316 Nantes, France.,Univ Rennes, CNRS, ISCR - UMR 6226, F-35000 Rennes, France
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6
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Yao HYY, Wang JQ, Yin JY, Nie SP, Xie MY. A review of NMR analysis in polysaccharide structure and conformation: Progress, challenge and perspective. Food Res Int 2021; 143:110290. [PMID: 33992390 DOI: 10.1016/j.foodres.2021.110290] [Citation(s) in RCA: 146] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 02/28/2021] [Accepted: 02/28/2021] [Indexed: 12/31/2022]
Abstract
Nuclear magnetic resonance (NMR) has been widely used as an analytical chemistry technique to investigate the molecular structure and conformation of polysaccharides. Combined with 1D spectra, chemical shifts and coupling constants in both homo- and heteronuclear 2D NMR spectra are able to infer the linkage and sequence of sugar residues. Besides, NMR has also been applied in conformation, quantitative analysis, cell wall in situ, degradation, polysaccharide mixture interaction analysis, as well as carbohydrates impurities profiling. This review summarizes the principle and development of NMR in polysaccharides analysis, and provides NMR spectra data collections of some common polysaccharides. It will help to promote the application of NMR in complex polysaccharides of biochemical interest, and provide valuable information on commercial polysaccharide products.
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Affiliation(s)
- Hao-Ying-Ye Yao
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, 235 Nanjing East Road, Nanchang 330047, China.
| | - Jun-Qiao Wang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, 235 Nanjing East Road, Nanchang 330047, China.
| | - Jun-Yi Yin
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, 235 Nanjing East Road, Nanchang 330047, China.
| | - Shao-Ping Nie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, 235 Nanjing East Road, Nanchang 330047, China.
| | - Ming-Yong Xie
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, 235 Nanjing East Road, Nanchang 330047, China; National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, Jiangxi 330022, China.
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7
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Purification, characterization and functional properties of exopolysaccharide from a novel halophilic Natronotalea sambharensis sp. nov. Int J Biol Macromol 2019; 136:547-558. [DOI: 10.1016/j.ijbiomac.2019.06.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/30/2019] [Accepted: 06/11/2019] [Indexed: 12/13/2022]
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8
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Rashid ZM, Mormann M, Steckhan K, Peters A, Esch S, Hensel A. Polysaccharides from lichen Xanthoria parietina: 1,4/1,6-α-d-glucans and a highly branched galactomannan with macrophage stimulating activity via Dectin-2 activation. Int J Biol Macromol 2019; 134:921-935. [PMID: 31078591 DOI: 10.1016/j.ijbiomac.2019.05.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 04/30/2019] [Accepted: 05/08/2019] [Indexed: 11/25/2022]
Abstract
Hot-water soluble polysaccharides H-1-3 and H-2-1 were isolated from the thalli of the lichen Xanthoria parietina (L.) Th. Fr. and purified by ion exchange and gel permeation chromatography. Structure elucidation was mainly based on 2D-NMR and nano-ESI-Q-TOF MS/MS experiments. H-1-3 (13.7 kDa) was shown to be linear α-glucan with α-d-Glcp-(1 → [→[4)-α-d-Glcp-(1]2 → [6)-α-d-Glcp-(1]3 → 4)]n core backbone. The (1,4)- and (1,6)-α-d-Glcp linkages were in a 2:3 M ratio. H-2-1 (525 kDa) was characterized as a complex branched β-galacto-α-mannan with →[6)-α-d-Manp-(1 → [2,6)-α-d-Manp-(1]2 → [2)-α-d-Manp-(1]2→]n core units and main side chains of (1,3)-β-d-Galf linked at O-6 to →2)-α-d-Manp-(1→, together with minor terminal units of 1,4/1,6-α-D -Glcp units attached to the core chain at O-6 position and α-L-Rhap linked to Galf side chain at O-2 position (Manp: Galf: Glcp: Rhap linkage ratio = 9:3:2:1). H-2-1 exerted strong immunoactivity in vitro and activated murine RAW macrophages 264.7 towards significantly increased phagocytosis, TNF-α and IL-1β secretion. These effects are due to an interaction of the galactomannan with the transmembrane pattern-recognition protein Dectin-2 of the macrophages.
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Affiliation(s)
- Zalilawati Mat Rashid
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstrasse 48, D-48149 Münster, Germany
| | - Michael Mormann
- University of Münster, Institute for Hygiene, Robert-Koch-Strasse 41, D-48149 Münster, Germany
| | - Katja Steckhan
- University of Münster, Institute for Hygiene, Robert-Koch-Strasse 41, D-48149 Münster, Germany
| | - Alena Peters
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstrasse 48, D-48149 Münster, Germany
| | - Stefan Esch
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstrasse 48, D-48149 Münster, Germany
| | - Andreas Hensel
- University of Münster, Institute of Pharmaceutical Biology and Phytochemistry, Corrensstrasse 48, D-48149 Münster, Germany.
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9
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Wang J, Nie S, Chen S, Phillips AO, Phillips GO, Li Y, Xie M, Cui SW. Structural characterization of an α-1, 6-linked galactomannan from natural Cordyceps sinensis. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.07.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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10
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Wang Y, Xu W, Bai Y, Zhang T, Jiang B, Mu W. Identification of an α-(1,4)-Glucan-Synthesizing Amylosucrase from Cellulomonas carboniz T26. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:2110-2119. [PMID: 28240031 DOI: 10.1021/acs.jafc.6b05667] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Amylosucrase, catalyzing the synthesis of α-(1,4)-glucan from sucrose, has been widely studied and used in carbohydrate biotransformation because of its versatile activities. In this study, a novel amylosucrase was characterized from Cellulomonas carboniz T26. The recombinant enzyme was overexpressed in Escherchia coli and purified by nickel affinity chromatography. It was determined to be a monomeric protein with a molecular mass of 72 kDa. The optimum pH and temperature for transglucosylation were measured to be pH 7.0 and 40 °C. The transglucosylation activity was significantly higher than the hydrolytic activity. The main product generated from sucrose was structurally determined to be α-(1,4)-glucan. A small amount of glucose was produced by hydrolysis, and sucrose isomers including turanose and trehalulose were generated as minor products. The ratio of hydrolytic, polymerization, and isomerization reactions was calculated to be 5.8:84.0:10.2. The enzyme favored production of long-chain insoluble α-glucan at lower temperature.
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Affiliation(s)
- Yongchun Wang
- State Key Laboratory of Food Science and Technology and ‡Ministry of Education, Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University , Wuxi, 214122, Jiangsu China
| | - Wei Xu
- State Key Laboratory of Food Science and Technology and ‡Ministry of Education, Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University , Wuxi, 214122, Jiangsu China
| | - Yuxiang Bai
- State Key Laboratory of Food Science and Technology and ‡Ministry of Education, Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University , Wuxi, 214122, Jiangsu China
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology and ‡Ministry of Education, Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University , Wuxi, 214122, Jiangsu China
| | - Bo Jiang
- State Key Laboratory of Food Science and Technology and ‡Ministry of Education, Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University , Wuxi, 214122, Jiangsu China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology and ‡Ministry of Education, Key Laboratory of Carbohydrate Chemistry and Biotechnology, Jiangnan University , Wuxi, 214122, Jiangsu China
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11
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Zhang BW, Xu JL, Zhang H, Zhang Q, Lu J, Wang JH. Structure Elucidation of a Polysaccharide from Umbilicaria esculenta and Its Immunostimulatory Activity. PLoS One 2016; 11:e0168472. [PMID: 27997616 PMCID: PMC5172621 DOI: 10.1371/journal.pone.0168472] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 12/01/2016] [Indexed: 01/05/2023] Open
Abstract
Umbilicaria esculenta has been used as a tonic food in China for several centuries owing to its pleasant flavor and health benefits. In this study, a water soluble polysaccharide, which we designated as UP2, with an average molecular weight of 3.33 × 105 Da, was isolated from U. esculenta cultivated in the Huangshan Mountain, by consecutive hot water extraction and anion-exchange chromatography. Gas chromatography analysis indicated that UP2 contained three kinds of monosaccharides, including mannose, glucose, and galactose at a molar ratio of 1.7:1.0:1.2. Linkage analysis of UP2 revealed the presence of (1 → 6)-linked glucosyl, (1 → 3,6)-linked glucosyl, t-linked galactosyl, (1 → 6)-linked galactosyl and (1 → 6)-linked mannosyl at a molar ratio of 0.7:4.6:4.1:2.2:9.1. Structural analysis determined that UP2 possessed a backbone consisting of (1 → 6)-linked β-D-glucopyranosyl and (1 → 6)-linked α-D-mannopyranosyl residues, which substituted at the O-3 position of (1 → 6)-linked β-D-glucopyranosyl residues by branches of (1 → 6)-linked α-D-galactopyranosyl and 1-linked β-D-galactopyranosyl residues. Immunostimulatory activity analysis showed that UP2 could stimulate the proliferation of RAW264.7 cells in a dose-dependent manner, and all the samples (20-500 μg/mL) were found to enhance nitric oxide production. The highest phagocytic activity of UP2 was observed at 200 μg/mL. Thus, UP2 may be a potential source of biological and pharmacological agents.
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Affiliation(s)
- Bi-Wei Zhang
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, People’s Republic of China
| | - Jin-Long Xu
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, People’s Republic of China
| | - Hua Zhang
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, People’s Republic of China
| | - Qiang Zhang
- Anhui Qiangwang Flavouring Food Co., LTD, Dongcheng Development Zone, Jieshou City, Anhui, China
| | - Jie Lu
- Anhui Qiangwang Flavouring Food Co., LTD, Dongcheng Development Zone, Jieshou City, Anhui, China
| | - Jun-Hui Wang
- School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, People’s Republic of China
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12
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Purification, structural features and inhibition activity on α-glucosidase of a novel polysaccharide from Lachnum YM406. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.08.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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Li H, Liu X, Xu Y, Wang X, Zhu H. Structure and antitumor activity of the extracellular polysaccharides from Aspergillus aculeatus via apoptosis and cell cycle arrest. Glycoconj J 2016; 33:975-984. [DOI: 10.1007/s10719-016-9717-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Revised: 06/28/2016] [Accepted: 07/14/2016] [Indexed: 12/16/2022]
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14
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Guo S, Mao W, Yan M, Zhao C, Li N, Shan J, Lin C, Liu X, Guo T, Guo T, Wang S. Galactomannan with novel structure produced by the coral endophytic fungus Aspergillus ochraceus. Carbohydr Polym 2014; 105:325-33. [DOI: 10.1016/j.carbpol.2014.01.079] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 01/17/2014] [Accepted: 01/22/2014] [Indexed: 10/25/2022]
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15
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Zhang L, Deng W. Structure Characterization and Adhesive Ability of a Polysaccharide from Tendrils of Parthenocissus heterophylla. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In order to reveal the structure of the polysaccharide and its contribution to the biological adhesion system of Parthenocissus heterophylla, a water-soluble polysaccharide (PT-A) was isolated from tendrils using DEAE-cellulose and Sephadex G-100 columns. PT-A mainly consisted of a backbone of (1→3)-linked-β-D-Galp residues and substituted at O-6 with side chains of (1→5)-linked-α-L-Ara f residues and glucomannopyranosyl residues. Individual polysaccharide chains of PT-A with the approximately height of 0.75 nm were observed by AFM. The analysis of force curves indicated that PT-A was a kind of elastic polysaccharide with a maximum adhesion force of 279.98 nN, which could be applied as a potential bio-adhesive.
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Affiliation(s)
- Li Zhang
- College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wenli Deng
- College of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
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16
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Sun Y, Liu J, Yue L, Zhang C, Yu H, Wu Q, Bi Y, Yue D, Liu J, Li T. One proteoglycan from the fruiting bodies of Chroogomphis rutilus (Schaeff.: Fr.) O.K. Miller: purification and structural features. Carbohydr Polym 2011. [DOI: 10.1016/j.carbpol.2011.06.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Sun YX, Liu JC, Yang XD, Kennedy JF. Purification, structural analysis and hydroxyl radical-scavenging capacity of a polysaccharide from the fruiting bodies of Russula virescens. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.02.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Godefroid M, Svensson MV, Cambier P, Uzureau S, Mirabella A, De Bolle X, Van Cutsem P, Widmalm G, Letesson JJ. Brucella melitensis 16M produces a mannan and other extracellular matrix components typical of a biofilm. ACTA ACUST UNITED AC 2010; 59:364-77. [PMID: 20497223 DOI: 10.1111/j.1574-695x.2010.00689.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mutations in the Brucella melitensis quorum-sensing (QS) system are involved in the formation of clumps containing an exopolysaccharide. Here, we show that the overexpression of a gene called aiiD in B. melitensis gives rise to a similar clumping phenotype. The AiiD enzyme degrades AHL molecules and leads therefore to a QS-deficient strain. We demonstrated the presence of exopolysaccharide and DNA, two classical components of extracellular matrices, in clumps produced by this strain. We also observed that the production of outer membrane vesicles is strongly increased in the aiiD-overexpressing strain. Moreover, this strain allowed us to purify the exopolysaccharide and to obtain its composition and the first structural information on the complex exopolysaccharide produced by B. melitensis 16M, which was found to have a molecular weight of about 16 kDa and to be composed of glucosamine, glucose and mostly mannose. In addition, we found the presence of 2- and/or 6-substituted mannosyl residues, which provide the first insights into the linkages involved in this polymer. We used a classical biofilm attachment assay and an HeLa cell infection model to demonstrate that the clumping strain is more adherent to polystyrene plates and to HeLa cell surfaces than the wild-type one. Taken together, these data reinforce the evidence that B. melitensis could form biofilms in its lifecycle.
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Affiliation(s)
- Marie Godefroid
- Unité de Recherche en Biologie Moléculaire, Facultés Universitaires Notre-Dame de la Paix, Namur, Belgium
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19
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He Y, Liu C, Chen Y, Ji A, Shen Z, Xi T, Yao Q. Isolation and structural characterization of a novel polysaccharide prepared from Arca subcrenata Lischke. J Biosci Bioeng 2007; 104:111-6. [PMID: 17884655 DOI: 10.1263/jbb.104.111] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Accepted: 05/12/2007] [Indexed: 11/17/2022]
Abstract
A water-soluble polysaccharide was isolated from Arca subcrenata Lischke (named ASLP) by hot-water extraction, anion-exchange, and gel-permeation chromatography. The average molecular weight of ASLP was estimated to be 3500 Da. The structural characterization of ASLP was performed by sugar composition analysis, methylation analysis, and partial acidic hydrolysis. Further analysis of ASLP was carried out by UV, FT-IR and NMR spectroscopies (1D, COSY, and HSQC, respectively). Our data suggests that ASLP is an alpha-(1-->4)-D-glucan, with an alpha-(1-->6)-D-glucan at the C-6 position every fourth residue along the main chain. The branch chain has three glucose residues. The possible structure, determined on the basis of structural analyses results, was also determined. Preliminary in vitro tests revealed that ASLP can stimulate mouse spleen lymphocyte proliferation and its branches are extremely important for its immunological activity.
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Affiliation(s)
- Yunmian He
- School of Life Science and Technology, China Pharmaceutical University, Nanjing 210009, PR China
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20
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Omarsdottir S, Freysdottir J, Olafsdottir ES. Immunomodulating polysaccharides from the lichen Thamnolia vermicularis var. subuliformis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2007; 14:179-84. [PMID: 17222542 DOI: 10.1016/j.phymed.2006.11.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2006] [Accepted: 04/19/2006] [Indexed: 05/13/2023]
Abstract
Three heteroglycans Ths-4, Ths-5 and thamnolan and a beta-glucan, Ths-2, isolated from the lichen Thamnolia vermicularis var. subuliformis were tested for in vitro immunomodulating activities and shown to have various influences on the immune system. All the polysaccharides except Ths-4 caused a stimulation of rat spleen cell proliferation. In contrast, Ths-4 caused cell death early in the culture, probably due to over-stimulation. Moreover, the galactofuranomannans, Ths-4, Ths-5 and the beta-glucan Ths-2, induced rat spleen cells to secrete IL-10 significantly above background levels. In addition, Ths-4 and Ths-5 stimulated significant TNF-alpha secretion by rat peritoneal macrophages. The galactofuranomannans Ths-4 and Ths-5 have similar structures apart from the molecular weight. Thus, it may be concluded that the molecular size might influence the potency but not the pattern of activity for Ths-4 and Ths-5. The galactofuranorhamnan thamnolan had less mitogenic effect than Ths-5 and Ths-2 and neither induced IL-10 secretion by rat spleen cells nor TNF-alpha secretion by peritoneal macrophages to significant levels. This shows that thamnolan with its unusual galactofuranorhamnan structure differs from the other Thamnolia polysaccharides in its immunomodulatory activity.
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