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Eluppai Asthagiri Kumaraswamy N, Jayaramamurthy S, Martin CA, Srinivasan B. Unlocking the potential of beta-glucans: a comprehensive review from synthesis to drug delivery carrier potency. Drug Deliv Transl Res 2024:10.1007/s13346-024-01694-8. [PMID: 39120791 DOI: 10.1007/s13346-024-01694-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2024] [Indexed: 08/10/2024]
Abstract
Modernization and lifestyle changes have resulted in a number of diseases, including cancer, that require complicated and thorough treatments. One of the most important therapies is the administration of antibiotics and medicines. This is known as chemotherapy for cancer, and it is a regularly utilised treatment plan in which the medications used have negative side effects. This has resulted in extensive research on materials capable of delivering pharmaceuticals to particular targets over an extended period of time. Biopolymers have often been preferred as effective drug delivery carriers. Of these, β-glucan, a natural polysaccharide, has not been extensively studied as a drug delivery carrier, despite its unique properties. This review discusses the sources, extraction techniques, structures, and characteristics of β-glucan to provide an overview. Furthermore, the different methods employed to encapsulate drugs into β-glucan and its role as an efficient drug, SiRNA and Plasmid DNA carrier have been elaborated in this article. The capacity of β-glucan-based to specifically target and alter tumour-associated macrophages, inducing an immune response ultimately resulting in tumour suppression has been elaborated. Finally, this study aims to stimulate further research on β-glucan by thoroughly describing its many characteristics and demonstrating its effectiveness as a drug delivery vehicle.
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Affiliation(s)
| | - Sivasankari Jayaramamurthy
- Department of Physics, B S Abdur Rahman Crescent Institute of Science and Technology, Vandalur, Chennai, 600048, India
| | - Catherine Ann Martin
- Dr. Rela Institute and Medical Centre, National Foundation for Liver Research, Chromepet, Chennai, 600044, India
| | - Baskar Srinivasan
- Department of Physics, Easwari Engineering College, Ramapuram, Chennai, 600089, India
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Zhang J, Xu X, Liu X, Chen M, Bai B, Yang Y, Bo T, Fan S. The Separation, Purification, Structure Identification, and Antioxidant Activity of Elaeagnus umbellata Polysaccharides. Molecules 2023; 28:6468. [PMID: 37764243 PMCID: PMC10534330 DOI: 10.3390/molecules28186468] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
In order to investigate the antioxidant activity of Elaeagnus umbellata polysaccharides, the physicochemical characteristics of purified Elaeagnus umbellata polysaccharides (EUP, consisting of two fractions, EUP1 and EUP2) were investigated using UV spectrophotometry, high-performance liquid chromatography (HPLC), high-performance gel permeation chromatography (HPGPC), and Fourier transform infrared spectroscopy (FT-IR). This revealed that EUP1 and EUP2 were acidic polysaccharides with an average molecular weight (MW) of 63 and 38 kDa, respectively. EUP1 mainly consisted of L-rhamnose and D-galactose in a molar ratio of 2.05:1, and EUP2 consisted of D-mannose, L-rhamnose, D-galactose, and D-arabinose in a molar ratio of 2.06:1:2.78:1. Furthermore, EUP exhibited considerable antioxidant potential for scavenging hydroxyl, superoxide anion, DPPH, and ABTS radicals. Therefore, EUP can be developed as a potential antioxidant for the functional food or pharmaceutical field.
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Affiliation(s)
- Jinhua Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
| | - Xin Xu
- School of Life Science, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
| | - Xinyi Liu
- School of Life Science, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
| | - Min Chen
- Shanxi Food Research Institute, Co., Ltd., Taiyuan 030024, China
| | - Baoqing Bai
- School of Life Science, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
| | - Yukun Yang
- School of Life Science, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
| | - Tao Bo
- Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Sanhong Fan
- School of Life Science, Shanxi University, Taiyuan 030006, China
- Shanxi Key Laboratory for Research and Development of Regional Plants, Shanxi University, Taiyuan 030006, China
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Tang L, Sun Y, Ge P, Chen L, Cheung PCK, Ding Z, Fang J. Biogenetic nanocarriers with enhanced pH stability formed by zein and selectively depolymerized mushroom hyperbranched β-glucans. Int J Biol Macromol 2022; 209:1771-1783. [PMID: 35472365 DOI: 10.1016/j.ijbiomac.2022.04.147] [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: 01/18/2022] [Revised: 04/18/2022] [Accepted: 04/19/2022] [Indexed: 11/30/2022]
Abstract
Hyperbranched polysaccharide from Pleurotus tuber-regium (PTR-HBPS) is a β-glucan with high degree of branching (DB, 0.69) and a molecular weight (Mw) of 31.2 × 105 g/mol with mixed β-1, 4/β-1, 4, 6/β-1, 6 glucosidic linkages. PTR-HBPS was depolymerized by cellulase and β-glucosidase under optimized conditions to form PC (PTR-HBPS depolymerized by cellulase) and PG (PTR-HBPS depolymerized by β-glucosidase) fractions with a minimum Mw of 2.74 × 105 and 3.98 × 105 g/mol, respectively. PC fractions had no significant changes for its primary structure in terms of glycosidic linkages, DB, and triple helical structure, while the DB of PG fractions was reduced to 0.63 with the loss of triple helical structure. Nanoparticles fabricated by PC fractions with zein showed better stability under different pH conditions. Enzymatic depolymerized low Mw β-glucan derived from PTR-HBPS with similar structural characteristics as the native one has potential as nanocarriers for food bioactive substances.
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Affiliation(s)
- Luying Tang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Yanhui Sun
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Peipei Ge
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Lei Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China.
| | - Peter C K Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Zhongyang Ding
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
| | - Jinshan Fang
- Jiangxi Province Fuzhou city Jinshan Biotechnology Co., Ltd., Fuzhou 344103, China
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Research on Extraction, Structure Characterization and Immunostimulatory Activity of Cell Wall Polysaccharides from Sparassis latifolia. Polymers (Basel) 2022; 14:polym14030549. [PMID: 35160537 PMCID: PMC8840611 DOI: 10.3390/polym14030549] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 01/22/2022] [Accepted: 01/25/2022] [Indexed: 02/01/2023] Open
Abstract
The cell wall polysaccharides were extracted from Sparassis latifolia fruit bodies by acid–alkali and superfine-grinding assisted methods, and the chemical characterization and in vitro immunity activities of these polysaccharide fractions were studied and compared. Results showed that superfine-grinding assisted extraction exhibited the highest yield of polysaccharides (SP, 20.80%) and low β-glucan content (19.35%) compared with alkaline extracts. The results revealed that the 20% ethanol precipitated fraction (20E) from SP was mainly composed of β-(1→3)-glucan and α-(1→4)-glucan. With the increase of ethanol precipitation, the fractions (30E, 40E, 50E) were identified as α-(1→4)-glucan with different molecular weights and conformations. Cell wall polysaccharides extracted through NaOH (NSP) and KOH (KSP) extraction had similar yields with 8.90% and 8.83%, respectively. Structural analysis indicated that the purified fraction from KSP (KSP-30E) was a β-(1→3)-glucan backbone branched with β-(1→6)-Glcp, while the purified fraction from NSP (NSP-30E) mainly contained β-(1→3)-glucan with a small number of α-linked-Glcp. The two fractions both exhibited rigid chain conformation in aqueous solutions. All polysaccharide fractions exerted the activity of activating Dectin-1 receptor in vitro, and the KSP-30E mainly identified as β-(1→3)-glucan with the terminal group via 1→6-linkage attached at every third residue exhibited a stronger enhancing effect than other fractions. Results suggested that KOH extraction could be efficient for the preparation of bioactive β-(1→3, 1→6)-glucan as a food ingredient.
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Stimulating mechanism of corn oil on biomass and polysaccharide production of Pleurotus tuber-regium mycelium. Int J Biol Macromol 2021; 201:93-103. [PMID: 34973980 DOI: 10.1016/j.ijbiomac.2021.12.149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/05/2021] [Accepted: 12/23/2021] [Indexed: 01/03/2023]
Abstract
Hyperbranched polysaccharides (HBPSs) are the main components in cell wall and exopolysaccharide (EPS) of Pleurotus tuber-regium. To enhance the yield of these macromolecules, corn oil at 4% addition exhibited the best effect for production of mycelial biomass at 20.49 g/L and EPS at 0.59 g/L, which was 2.56 folds and 1.90 folds of the control, respectively. The treated hyphae were much thicker with smooth surface, while its cell wall content (43.81 ± 0.02%) was 1.96 times of the control (22.34 ± 0.01%). Moreover, a large number of lipid droplets could be visualized under the view of confocal laser scanning microscopy (CLSM). RNA-seq analysis revealed that corn oil could enter the cells and result in the up-regulation of genes on cell morphology and membrane permeability, as well as the down-regulation on expression level of polysaccharide hydrolase and genes involved in the MAPK pathway, all of which probably contribute to the increase of polysaccharides production.
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Zhang R, Xu Q, Tao Y, Wang X. Rheological and pH dependent properties of injectable and controlled release hydrogels based on mushroom hyperbranched polysaccharide and xanthan gum. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2021. [DOI: 10.1016/j.carpta.2021.100063] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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7
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Zheng Z, Huang Q, Kang Y, Liu Y, Luo W. Different molecular sizes and chain conformations of water-soluble yeast β-glucan fractions and their interactions with receptor Dectin-1. Carbohydr Polym 2021; 273:118568. [PMID: 34560979 DOI: 10.1016/j.carbpol.2021.118568] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/29/2021] [Accepted: 08/15/2021] [Indexed: 02/09/2023]
Abstract
Although β-glucan could bind to Dectin-1 to exert bioactivity, the influence of molecular size and chain conformation of β-glucan on its interaction with Dectin-1 is still unclear. This work investigated the molecular sizes and chain conformations of five water-soluble yeast β-glucan (WYG1-5) fractions as well as their interactions with Dectin-1 by fluorescence spectroscopy and microscale thermophoresis. Results revealed a spherical conformation for higher molecular weight WYG and a stiff chain conformation for smaller molecular weight WYG. The WYG and Dectin-1 interactions were in the order of WYG-2 > WYG-1 > WYG-3 > WYG-4 > WYG-5. The spherical WYG-2 exhibited the largest binding constant of 7.91 × 105 M1 and the lowest dissociation constant of 22.1 nM to Dectin-1. Additionally, the underlying interaction mechanism showed that it may be easier for spherical WYG with longer side chains to interact with receptor Dectin-1.
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Affiliation(s)
- Zhaomin Zheng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Department of Cuisine and Nutrition, Hubei University of Economics, Wuhan 430205, China
| | - Qilin Huang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Yu Kang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
| | - Yonggang Liu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, China
| | - Wei Luo
- School of Chemistry and Food Engineering, Changsha University of Science & Technology, Changsha 410114, China
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Functional perspective of black fungi (Auricularia auricula): Major bioactive components, health benefits and potential mechanisms. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.05.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Wang YX, Xin Y, Huang XJ, Yin JY, Nie SP. A branched galactoglucan with flexible chains from the basidioma of Macrolepiota albuminosa (Berk.) Pegler. Food Chem 2021; 367:130738. [PMID: 34384978 DOI: 10.1016/j.foodchem.2021.130738] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 11/30/2022]
Abstract
A homogeneous galactoglucan was purified from the alkali-extracted polysaccharides from the basidioma of Macrolepiota albuminosa by gradient ethanol precipitation, whose proposed structure was given for the first time. Results showed it had a molecular weight of 210 kDa, and mainly consisted of glucose and galactose. There were abundant filaments, randomly distributed sheet-like and flaky appearance in its surface by SEM observation. Its backbone comprised β-(1 → 6)-Glcp, α-(1 → 6)-Galp and β-(1 → 3,6)-Glcp residues at 4:1:1, terminated by β-(1 → 3)-Glcp and T-Glcp residues. Rheological measurements suggested its steady flow behavior was highly dependent on concentrations. Newtonian behavior was evident at low concentrations, whereas pseudoplastic behavior was observed at high concentrations. Besides, the X-ray diffraction patterns proved the presence of amorphous structure. The conformational parameters were detected by HPSEC-MALLS-RI, revealing a random coil conformation in NaNO3 aqueous solution. This work provides a theoretical basis for the application of polysaccharides from M. albuminosa in food- and drug-based therapies.
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Affiliation(s)
- Yu-Xiao Wang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, Jiangxi Province 330047, China
| | - Yue Xin
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, Jiangxi Province 330047, China
| | - Xiao-Jun Huang
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, Jiangxi Province 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, Nanchang, Jiangxi Province 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, Nanchang, Jiangxi Province 330047, China
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10
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Wang ZQ, Zhu CX, Dai AR, Chen L, You CP, Zhang BB. Chemical Characterization and Antioxidant Properties of Cell Wall Polysaccharides from Antrodia cinnamomea mycelia. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.100932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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11
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Ma G, Du H, Hu Q, Yang W, Pei F, Xiao H. Health benefits of edible mushroom polysaccharides and associated gut microbiota regulation. Crit Rev Food Sci Nutr 2021; 62:6646-6663. [PMID: 33792430 DOI: 10.1080/10408398.2021.1903385] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Edible mushrooms have been an important part of the human diet for thousands of years, and over 100 varieties have been cultivated for their potential human health benefits. In recent years, edible mushroom polysaccharides (EMPs) have been studied for their activities against obesity, inflammatory bowel disease (IBD), and cancer. Particularly, accumulating evidence on the exact causality between these health risks and specific gut microbiota species has been revealed and characterized, and most of the beneficial health effects of EMPs have been associated with its reversal impacts on gut microbiota dysbiosis. This demonstrates the key role of EMPs in decreasing health risks through gut microbiota modulation effects. This review article compiles and summarizes the latest studies that focus on the health benefits and underlying functional mechanisms of gut microbiota regulation via EMPs. We conclude that EMPs can be considered a dietary source for the improvement and prevention of several health risks, and this review provides the theoretical basis and technical guidance for the development of novel functional foods with the utilization of edible mushrooms.
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Affiliation(s)
- Gaoxing Ma
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing, People's Republic of China.,Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
| | - Hengjun Du
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
| | - Qiuhui Hu
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing, People's Republic of China
| | - Wenjian Yang
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing, People's Republic of China
| | - Fei Pei
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing, People's Republic of China
| | - Hang Xiao
- Department of Food Science, University of Massachusetts, Amherst, Massachusetts, USA
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Liu M, Li X, Zhou S, Wang TTY, Zhou S, Yang K, Li Y, Tian J, Wang J. Dietary fiber isolated from sweet potato residues promotes a healthy gut microbiome profile. Food Funct 2020; 11:689-699. [PMID: 31909777 DOI: 10.1039/c9fo01009b] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This study investigated the impact of dietary fiber from sweet potato residue (SPDF) on the diversity of the gut microbiota. An in vitro batch culture system simulating the human gut was used to understand the prebiotic role of SPDF. The results showed that SPDF mediated a significant increase in the concentrations of Bifidobacterium and Lactobacillus, whereas induced a significant decrease of Enterobacillus, Clostridium perfringens and Bacteroides. The prebiotic index and Bifidobacterium/Enterobacillus value were also significantly increased in SPDF groups compared to those of the control group, suggesting that SPDF had prebiotic effects. Furthermore, to investigate the effects of SPDF on the intestinal microecosystem, diets containing different concentrations of SPDF were used to feed Wistar rats for 4 weeks. 16S rRNA gene sequencing, short chain fatty acid quantification and physiochemical property analysis in the rat feces were then conducted. The results showed that SPDF significantly increased the Bacteroidetes to Firmicutes ratio at the phylum level and the amount of Akkermansia was also increased at the genus level, which was confirmed by qRT-PCR. The production of propionate and butyrate in the rat feces of both 3% and 15% SPDF groups was higher than that in the control group, which was further confirmed by the decrease of pH. Additionally, SPDF supplementation in this study resulted in a higher villus height to fossa depth ratio, which indicated improved digestion and absorption in the GI tract. Our findings support the utilization of SPDF from sweet potato residue in the development of potentially prebiotic food products for improving intestinal health.
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Affiliation(s)
- Man Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 10048, China.
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Su Y, Chen L, Yang F, Cheung PCK. Beta-d-glucan-based drug delivery system and its potential application in targeting tumor associated macrophages. Carbohydr Polym 2020; 253:117258. [PMID: 33278940 DOI: 10.1016/j.carbpol.2020.117258] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 09/16/2020] [Accepted: 10/13/2020] [Indexed: 02/09/2023]
Abstract
Use of polysaccharides as carriers in drug delivery system is a hot topic, especially those with specific recognition of immune cells, enabling them to be applied in targeting delivery system. β-d-glucans are naturally occurring non-digestible polysaccharides with immunomodulatory activities that have attracted increasing attention to serve as therapeutic agents or immune-adjuvants. Being able to be specifically recognized by immune cells like macrophages, β-d-glucans can be developed as promising carriers for targeting delivery with stability, biocompatibility and specificity when applied in immunotherapy. Targeting tumor associated macrophages (TAMs) is an emerging strategy for cancer immunotherapy since it exerts anti-cancer effects based on modulating body immunity in tumor microenvironment (TME). This new strategy does not require high concentration of drugs to kill cancer cells directly and lessen tumor recurrence by creating unique immune memory for malignant cells. In this review, construction strategies of polysaccharide-based drug delivery system of three types of β-d-glucan including non-yeast and yeast β-d-glucans as well as hyper-branched β-d-glucan are discussed with reference to their branching characteristics and conformation. The applications of these β-d-glucans as nano-carrier for drug delivery targeting TAMs are also discussed.
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Affiliation(s)
- Yuting Su
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Lei Chen
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | - Fan Yang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Peter C K Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
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Su Y, Li X, Lam KL, Cheung PCK. pH-sensitive PEG-coated hyper-branched β-d-glucan derivative as carrier for CpG oligodeoxynucleotide delivery. Carbohydr Polym 2020; 246:116621. [PMID: 32747260 DOI: 10.1016/j.carbpol.2020.116621] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 10/24/2022]
Abstract
β-d-glucan is a natural non-digestible polysaccharide that can be selectively recognized by recognition receptors such as Dectin-1 receptors, resulting in an emerging interest on exploring its capacity for carrying biological information to desired organs or cells. CpG oligodeoxynucleotide (ODN) has the potentiality to initiate an immune-stimulatory cascade via activating B cells inducing proinflammatory cytokines, which is conducive to immunotherapy and nucleic acid vaccine. Herein, we developed a pH-sensitive delivery system loading with CpG ODN by introducing poly-ethylenimine (PEI) to a hyperbranched β-d-glucan (HBB) and coating with poly-ethylene glycol (PEG) shell via acidic liable Schiff bond. This delivery system exhibited a favorable biocompatibility and facilitated the cellular uptake of CpG ODN at pH 6.8 with the possibility of having higher accumulation in acidic cancer microenvironment. Furthermore, this carrier together with class B CpG ODN could enhance the secretion of cytokines including interleukin-6 and interferon-α as well as capable of interferon-α induction.
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Affiliation(s)
- Yuting Su
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Xiaojie Li
- Shenzhen Key Laboratory of Marine Microbiome Engineering, Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, 518060, China.
| | - Ka Lung Lam
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
| | - Peter C K Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
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15
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Xu W, Liu Y, Zhang F, Lei F, Wang K, Jiang J. Physicochemical characterization of Gleditsia triacanthos galactomannan during deposition and maturation. Int J Biol Macromol 2020; 144:821-828. [DOI: 10.1016/j.ijbiomac.2019.09.161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/20/2019] [Accepted: 09/25/2019] [Indexed: 10/25/2022]
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16
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Structure, bioactivity and applications of natural hyperbranched polysaccharides. Carbohydr Polym 2019; 223:115076. [PMID: 31427017 DOI: 10.1016/j.carbpol.2019.115076] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 07/07/2019] [Accepted: 07/09/2019] [Indexed: 11/23/2022]
Abstract
In recent years, hyperbranched polymers, especially the natural hyperbranched polysaccharides (HBPSs), are receiving much attention due to their diverse biological activities and applications. With high degree of branching (DB), HBPSs mainly exist in the form of either a comb-brush shape, dendrimer-like particulate, or globular particle. HBPSs also possess some unique properties, such as high density, large spatial cavities, and numerous terminal functional groups, which distinguish them from other polymers. As a natural biopolymer, HBPS has excellent bioavailability, biocompatibility, and biodegradability, which have versatile applications in the fields of food, medicine, cosmetic, and nanomaterials. In this review, the source and structure of HBPSs from plant, animal, microbial and fungal origins as well as their biological functions and applications are covered, with the aim of further advancing the research of their structure and bioactivity.
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Chen L, Wang Z, Zhang B, Ge M, Ng H, Niu Y, Liu L. Production, structure and morphology of exopolysaccharides yielded by submerged fermentation of Antrodia cinnamomea. Carbohydr Polym 2019; 205:271-278. [DOI: 10.1016/j.carbpol.2018.10.070] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 10/07/2018] [Accepted: 10/22/2018] [Indexed: 12/14/2022]
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Huang Y, Wu X, Zhou S, Lin Y, Zhang W, Fu C, Luo L, Wang K, Xie X, Fan H. Biphasic extraction of different polysaccharides from Radix Sophorae Tonkinensis by microwave-assisted aqueous two-phase extraction: Process optimization, structural characterization and mechanism exploration. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.06.038] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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19
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Wu D, Yang S, Tang C, Liu Y, Li Q, Zhang H, Cui F, Yang Y. Structural Properties and Macrophage Activation of Cell Wall Polysaccharides from the Fruiting Bodies of Hericium erinaceus. Polymers (Basel) 2018; 10:E850. [PMID: 30960775 PMCID: PMC6403720 DOI: 10.3390/polym10080850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 07/30/2018] [Accepted: 07/30/2018] [Indexed: 12/02/2022] Open
Abstract
In this study, water-soluble and alkali-soluble cell wall polysaccharides were obtained from fruiting body extracted residual micropowders of Hericium erinaceus, harvested at seven different growing stages. The structural properties and in vitro immunity activities of cell wall polysaccharides extracted successively by hot water and sodium hydroxide solution were studied, and the results indicated that the yield and content of polysaccharides increased during the reproductive growth stage and decreased with the maturity of the fruiting body. Water-soluble cell wall polysaccharides mainly composed of glucose and galactose at a molar ratio of 3.4⁻14:1.0, and also contained a small ratio of glucuronic acid. The alkali-soluble cell wall polysaccharides were glucans with lower molecular weight and higher macrophage activation activity in vitro than water-soluble ones. Our findings suggest that the growth stages (H4 and H5) are suitable for harvesting H. erinaceus fruiting bodies with higher cell wall polysaccharide yield and functional benefits.
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Affiliation(s)
- Di Wu
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
| | - Shan Yang
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
- College of Food Science &Engineering, Shanghai Ocean University, Shanghai 201306, China.
| | - Chuan Tang
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
| | - Yanfang Liu
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
| | - Qiaozhen Li
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
| | - Henan Zhang
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
| | - Fengjie Cui
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
| | - Yan Yang
- National Engineering Research Center of Edible Fungi, Key Laboratory of Edible Fungi Resources and Utilization (South), Institute of Edible Fungi, Shanghai Academy of Agriculture Sciences, Ministry of Agriculture, Shanghai 201403, China.
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20
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Wang W, Wu Z, Wang X, Li C, Zhang K, Zhou J, Cheng S, Lu F. Enzymatic hydrolysis combined with high-pressure homogenisation for the preparation of polysaccharide-based nanoparticles from the by-product of Flammulina velutipes. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13836] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Wenhang Wang
- State Key Laboratory of Food Nutrition and Safety; Tianjin 300457 China
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Zinan Wu
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Xiao Wang
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Cong Li
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Kai Zhang
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Jingyang Zhou
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Shan Cheng
- Key Laboratory of Food Nutrition and Safety; Ministry of Education; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Fuping Lu
- State Key Laboratory of Food Nutrition and Safety; Tianjin 300457 China
- College of Biotechnology; Tianjin University of Science & Technology; Tianjin 300457 China
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21
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Immunomodulatory effect of structurally-characterized mushroom sclerotial polysaccharides isolated from Polyporus rhinocerus on human monoctyes THP-1. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.12.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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22
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Li X, Zhou J, Liu C, Xiong Q, Duan H, Cheung PCK. Stable and Biocompatible Mushroom β-Glucan Modified Gold Nanorods for Cancer Photothermal Therapy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:9529-9536. [PMID: 28994280 DOI: 10.1021/acs.jafc.7b03895] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Naturally occurring β-glucans have been widely regarded as a natural source for functional foods and pharmaceuticals due to their immunomodulatory property and antitumor activity. However, physicochemically stable and biocompatible β-glucans are rarely explored as a carrier for nanomaterials to overcome the problems of aggregation and nanotoxicity. Here, we developed highly stable and biocompatible mushroom β-glucan coated gold nanorods (AuNR-Glu) for cancer photothermal therapy by integrating Pleurotus tuber-regium sclerotial β-glucan (Glu) and plasmonic gold nanorods (AuNRs) possessing photothermal property in the second near-infrared (NIR-II) window. AuNR-Glu showed high colloidal stability in various biological media, even in simulated gastric fluid. Moreover, AuNR-Glu had low cytotoxicity and high photothermal stability, which are excellent characteristics for photothermal agents for cancer therapy. In vitro experiments showed that AuNR-Glu nanohybrid was effective against MCF-7 (only 4.5 ± 0.9% viability) at a low dose of 20 μg/mL under NIR-II at a safe laser power density (0.75 W/cm2). Natural mushroom β-glucans are potential functional polymers that can be used to fabricate nanohybrids for biomedical applications.
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Affiliation(s)
- Xiaojie Li
- School of Life Sciences, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
| | - Jiajing Zhou
- School of Chemical and Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive 637457, Singapore
| | - Chaoran Liu
- School of Life Sciences, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
| | - Qirong Xiong
- School of Chemical and Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive 637457, Singapore
| | - Hongwei Duan
- School of Chemical and Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive 637457, Singapore
| | - Peter C K Cheung
- School of Life Sciences, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong, China
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23
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Lin S, Ching LT, Lam K, Cheung PC. Anti-angiogenic effect of water extract from the fruiting body of Agrocybe aegerita. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.08.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Purification, Characterization and Biological Activity of Polysaccharides from Dendrobium officinale. Molecules 2016; 21:molecules21060701. [PMID: 27248989 PMCID: PMC6272863 DOI: 10.3390/molecules21060701] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 05/24/2016] [Accepted: 05/25/2016] [Indexed: 11/16/2022] Open
Abstract
Polysaccharide (DOPA) from the stem of D. officinale, as well as two fractions (DOPA-1 and DOPA-2) of it, were isolated and purified by DEAE cellulose-52 and Sephacryl S-300 chromatography, and their structural characteristics and bioactivities were investigated. The average molecular weights of DOPA-1 and DOPA-2 were 394 kDa and 362 kDa, respectively. They were mainly composed of d-mannose, d-glucose, and had a backbone consisting of 1,4-linked β-d-Manp and 1,4-linked β-d-Glcp with O-acetyl groups. Bioactivity studies indicated that both DOPA and its purified fractions (DOPA-1 and DOPA-2) could activate splenocytes and macrophages. The D. officinale polysaccharides had stimulatory effects on splenocytes, T-lymphocytes and B-lymphocytes, promoting the cell viability and NO production of RAW 264.7 macrophages. Furthermore, DOPA, DOPA-1 and DOPA-2 were found to protect RAW 264.7 macrophages against hydrogen peroxide (H₂O₂)-induced oxidative injury by promoting cell viability, suppressing apoptosis and ameliorating oxidative lesions. These results suggested that D. officinale polysaccharides possessed antioxidant activity and mild immunostimulatory activity.
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25
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Zhao W, Xie W, Du S, Yan S, Li J, Wang Q. Changes in physicochemical properties related to the texture of lotus rhizomes subjected to heat blanching and calcium immersion. Food Chem 2016; 211:409-14. [PMID: 27283649 DOI: 10.1016/j.foodchem.2016.05.075] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 05/09/2016] [Accepted: 05/12/2016] [Indexed: 11/19/2022]
Abstract
Pretreatments such as low temperature blanching and/or calcium soaking affect the cooked texture of vegetal food. In the work, lotus rhizomes (Nelumbo nucifera Gaertn.) were pretreated using the following 4 treatments, blanching at 40°C, blanching at 90°C, soaking in 0.5% CaCl2, and blanching at 40°C followed by immersion in 0.5% CaCl2. Subsequently, the cell wall material of pretreated samples was isolated and fractioned to identify changes in the degree of esterification (DE) and monosaccharide content of each section, and the texture of the lotus rhizomes in different pre-treatments was determined after thermal processing with different time. The results showed that the greatest hardness was obtained after blanching at 40°C in CaCl2, possibly attributing to the formation of a pectate calcium network, which maintains the integrity of cell walls. Furthermore, the content of galactose, rhamnose and arabinose decreased due to the breakage of sugar backbones and subsequent damage to cell walls. Our results may provide a reference for lotus rhizome processing.
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Affiliation(s)
- Wenlin Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; Aquatic Vegetables Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, People's Republic of China
| | - Wei Xie
- Department of Biological & Chemical Engineering, Tongren University, Tongren 554300, People's Republic of China
| | - Shenglan Du
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; Aquatic Vegetables Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, People's Republic of China
| | - Shoulei Yan
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; Aquatic Vegetables Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, People's Republic of China.
| | - Jie Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; Aquatic Vegetables Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, People's Republic of China
| | - Qingzhang Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; Aquatic Vegetables Preservation and Processing Technology Engineering Center of Hubei Province, Wuhan 430070, People's Republic of China
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26
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Liu C, Chen J, Chen L, Huang X, Cheung PCK. Immunomodulatory Activity of Polysaccharide-Protein Complex from the Mushroom Sclerotia of Polyporus rhinocerus in Murine Macrophages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:3206-3214. [PMID: 27054263 DOI: 10.1021/acs.jafc.6b00932] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A novel water-soluble polysaccharide-protein complex (PRW1) isolated from the sclerotia of an edible mushroom Polyporus rhinocerus which was purified by membrane ultrafiltration could significantly activate murine macrophages RAW264.7 in vitro. PRW1 had a molecular weight of less than 50 kDa and was found to be a highly branched heteropolysaccharide-protein complex composed of 45.7 ± 0.97% polysaccharide and 44.2 ± 0.41% protein. Based on the results of total acid hydrolysis, methylation analysis, and Fourier transform infrared spectroscopy, the carbohydrate moiety of PRW1 was found to be a β-d-mannoglucan with its backbone containing →1)-d-Glcp-(4→, →1)-d-Glcp-(6→, and →1)-d-Manp-(2→ residues (molar ratio of 5:4:6) and having terminal d-Glcp as side chain (degree of branching of 0.62). In vitro studies showed that PRW1 significantly induced NO production and enhanced the release of a variety of cytokines including G-CSF, GM-CSF, IL-6, IL12p40/70, MCP-1, MCP-5, MIP-1-α, MIP-2, RANTES, sTNFRI, and TNF-α. Mechanistically, PRW1 treatment triggered ERK phosphorylation to activate macrophages within 15 min and significantly increased the expression level of inducible NOS after 6 h. In summary, this study indicates that PRW1 derived from the sclerotia of P. rhinocerus is a potential immunomodulatory agent for cancer immunotherapy.
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Affiliation(s)
- Chaoran Liu
- Food and Nutritional Sciences, School of Life Sciences, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong SAR (HKSAR), China
| | - Jialun Chen
- Food and Nutritional Sciences, School of Life Sciences, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong SAR (HKSAR), China
| | - Lei Chen
- Key Laboratory of Biofuels, Qingdao Engineering Research Center of Biomass Resources and Environment, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences , Qingdao 266101, China
| | - Xuesong Huang
- Department of Food Science and Engineering, Jinan University , Guangzhou 510632, China
| | - Peter C K Cheung
- Food and Nutritional Sciences, School of Life Sciences, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong SAR (HKSAR), China
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27
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Li C, You L, Fu X, Huang Q, Yu S, Liu RH. Structural characterization and immunomodulatory activity of a new heteropolysaccharide from Prunella vulgaris. Food Funct 2016; 6:1557-67. [PMID: 25825862 DOI: 10.1039/c4fo01039f] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new heteropolysaccharide, here called P1, was isolated from the fruit clusters of Prunella vulgaris using a hot water extraction method. Chemical and physical analyses indicated that P1 had a spherical conformation with an average molecular weight of 1750 kDa and consisted of arabinose (28.37%), xylose (54.67%), mannose (5.61%), glucose (5.46%), and galactose (5.89%). The main types of P1 linkages were proved to be (1→5)-linked α-L-Ara, (1→)-linked α-L-Ara, (1→3)-linked α-D-xyl, (1→3)-linked β-D-Gal, (1→3,6)-linked β-D-Gal, (1→3,6)-linked α-D-Man and (1→6)-linked α-D-Glc according to the periodate oxidation-Smith degradation and NMR analyses. P1 could significantly enhance the secretion of NO, TNF-α, and IL-6 in murine RAW 264.7 cells, involving the toll-like receptor 2 (TLR2), TLR4 and complement receptor 3 (CR3). Further studies showed that P1 exhibited stable immune activities in the pH range of 4.0-10.0 and below 121 °C. The results suggested that P1 could be used as a potent immunomodulatory agent in functional foods and pharmacological fields.
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Affiliation(s)
- Chao Li
- College of Light Industry and Food Science, South China University of Technology, 381 Wushan Road, Guangzhou 510640, China.
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28
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Chen L, Cheng WN, Zhang BB, Cheung PCK. Structural and thermal analysis of a hyper-branched exopolysaccharide produced by submerged fermentation of mushroom mycelium. RSC Adv 2016. [DOI: 10.1039/c6ra23383j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
An exopolysaccharide (PTR-EPS1) purified from the culture medium of the mycelial fermentation of Pleurotus tuber-regium had a weight-average molecular mass of 173.6 kDa and a radius of 55.6 nm.
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Affiliation(s)
- L. Chen
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi 214122
| | - W. N. Cheng
- Department of Pharmacy
- Affiliated Hospital of Binzhou Medical University
- Binzhou 256603
- China
| | - B. B. Zhang
- Key Laboratory of Industrial Biotechnology
- Ministry of Education
- School of Biotechnology
- Jiangnan University
- Wuxi 214122
| | - P. C. K. Cheung
- School of Life Sciences
- The Chinese University of Hong Kong
- Hong Kong
- China
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29
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β-(1→3),(1→6)-Glucans: medicinal activities, characterization, biosynthesis and new horizons. Appl Microbiol Biotechnol 2015; 99:7893-906. [DOI: 10.1007/s00253-015-6849-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 07/12/2015] [Accepted: 07/14/2015] [Indexed: 02/07/2023]
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30
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Preparation and structural characterization of a partially depolymerized beta-glucan obtained from Poria cocos sclerotium by ultrasonic treatment. Food Hydrocoll 2015. [DOI: 10.1016/j.foodhyd.2014.12.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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31
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Zhang L, Ning C, Zhou T, Liu X, Yeung KWK, Zhang T, Xu Z, Wang X, Wu S, Chu PK. Polymeric nanoarchitectures on Ti-based implants for antibacterial applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17323-17345. [PMID: 25233376 DOI: 10.1021/am5045604] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Because of the excellent mechanical properties and good biocompatibility, titanium-based metals are widely used in hard tissue repair, especially load-bearing orthopedic applications. However, bacterial infection and complication during and after surgery often causes failure of the metallic implants. To endow titanium-based implants with antibacterial properties, surface modification is one of the effective strategies. Possessing the unique organic structure composed of molecular and functional groups resembling those of natural organisms, functionalized polymeric nanoarchitectures enhance not only the antibacterial performance but also other biological functions that are difficult to accomplish on many conventional bioinert metallic implants. In this review, recent advance in functionalized polymeric nanoarchitectures and the associated antimicrobial mechanisms are reviewed.
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Affiliation(s)
- Long Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Province Key Laboratory of Industrial Biotechnology, Faculty of Materials Science & Engineering, Hubei University , Wuhan, China
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32
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Cell wall structure of mushroom sclerotium (Pleurotus tuber-regium): Part 2. Fine structure of a novel alkali-soluble hyper-branched cell wall polysaccharide. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2013.11.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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33
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Chen L, Cheung PCK. Mushroom dietary fiber from the fruiting body of Pleurotus tuber-regium: fractionation and structural elucidation of nondigestible cell wall components. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:2891-2899. [PMID: 24625260 DOI: 10.1021/jf500112j] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The cell wall of mushroom fruiting body is constituted of nondigestible macromolecules that are a rich source of dietary fiber with biological functions that are beneficial to human health. The cell wall components of an edible mushroom fruiting body from Pleurotus tuber-regium (PTR) were fractionated, and their chemical structures were investigated by chemical, physicochemical, and microscopic analyses. The present results suggest that the cell wall of the PTR mushroom fruiting body contains four main fractions: an outer fraction of polysaccharide and protein complex, which can be extracted using boiling water; a cold alkali-soluble fraction of heteropolysaccharides associated with a small amount of proteins; a hot alkali-soluble fraction of hyper-branched glucans; and an alkali-insoluble fraction of glucan-chitin complex with a normalized relative percentage of 3.6:21.9:55.7:18.8. The anomeric linkage of all the glucans was revealed by infrared spectroscopy to be β type. The structure of the major mushroom fruiting body cell wall polysaccharide (the hot alkali-soluble one, FHA-I) was elucidated by the methylation analysis to be composed of →1)-Glcp-(4→ linkages as the backbone with a 52% degree of branching consisting of →1)-Glcp-(6→ linkages in the side chains, whereas some →1)-Glcp-(3→ linkages might exist in the backbone or side chains. Size exclusion chromatography coupled with multiangle laser light scattering analysis revealed that FHA-I had a molecular weight of 4.224 × 10(6) g/mol and a root-mean-square radius of 30.4 nm. Both scanning electron and atomic force microscopy further showed the highly branched microstructure of FHA-I when dispersed in an aqueous sodium dodecyl sulfate solution.
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Affiliation(s)
- Lei Chen
- Institute of Food and Nutraceutical Science, School of Agriculture and Biology, Shanghai Jiao Tong University , Shanghai 200240, China
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