1
|
Shang Z, Jiang Y, Yang F, Wu K, Zheng G, Lin Y, Wang C, Xin W, Zhao F. A homologous series of α-glucans from Hemicentrotus pulcherrimus and their immunomodulatory activity. Int J Biol Macromol 2024; 260:129657. [PMID: 38253154 DOI: 10.1016/j.ijbiomac.2024.129657] [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: 09/05/2023] [Revised: 12/20/2023] [Accepted: 01/19/2024] [Indexed: 01/24/2024]
Abstract
Seven macromolecular polysaccharides (HPP-2S-HPP-8S) were purified from the gonads of sea urchin Hemicentrotus pulcherrimus. They were characterized as α-glucan homologues, sharing the same α-1,4-glucan backbone substituted at C-6 positions by glucose with HPP-1S that occurs as the major polysaccharide in H. pulcherrimus, while with higher degrees of branching, and additionally possessing minor amounts of mannose and ribose. The branching degree and amounts of non-glucose branches showed a generally increasing tendency across HPP-2S - HPP-8S. These polysaccharides exhibited significant macrophage-activating effects by augmenting the secretion of NO, TNF-α and IL-6, which probably involves the activation of NF-κB and MAPKs signaling pathways. Notably, the polysaccharides with a higher degree of branching exhibited markedly enhanced immunomodulatory capacity with a lowest effective concentration of 1.95 μg/mL. This work provides new cases of bioactive α-glucans and reveals their potential application as immunomodulating agents.
Collapse
Affiliation(s)
- Zhipeng Shang
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Yan Jiang
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Fuhao Yang
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Ke Wu
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Gaoliang Zheng
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Yexi Lin
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Chunhua Wang
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China.
| | - Wenyu Xin
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China.
| | - Feng Zhao
- The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Shandong Collaborative Innovation Center of Ocean Engineering Technology, School of Pharmacy, Binzhou Medical University, Yantai 264003, China.
| |
Collapse
|
2
|
Zhang H, Xiao F, Li J, Han R, Li G, Wan Z, Shao S, Zhao D, Yan M. Immunomodulatory activity of semen Ziziphi Spinosae protein: a potential plant protein functional food raw material. NPJ Sci Food 2023; 7:32. [PMID: 37336871 DOI: 10.1038/s41538-023-00204-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 05/26/2023] [Indexed: 06/21/2023] Open
Abstract
Semen Ziziphi Spinosae protein (SZSP) is a new plant protein resource with good food functional properties and health care function. However, the biological activity of SZSP has not been further studied, which greatly limits the development and utilization of SZSP in the food industry. The aim of this study was to investigate the protective effect of SZSP on immunosuppressed mice and its inhibitory effect on immune-stimulated RAW264.7 cells. The results demonstrated that SZSP remarkably improved the immunomodulatory secretion in serum (interleukin-2, tumor necrosis factor-α [TNF-α], interferon-γ, immunoglobulin-A, immunoglobulin-G, immunoglobulin-M) and primary macrophages (nitric oxide, interleukin-1β, TNF-α) and promoted the NK-cell killing activity of primary splenocytes in CTX-induced immunosuppression mice. Immunohistochemical analysis results indicated that the secretion of CD4+ and CD8+ in the spleen and thymus can be regulated by SZSP, leading to inhibition of the damage induced by cyclophosphamide in mice. Meanwhile, in order to clarify the immunomodulatory mechanism of SZSP, we showed that SZSP significantly inhibited the secretion of NO, interleukin-6, and TNF-α and reduced the phosphorylation expression of p-ERK, p-JNK, and p-IκBα in lipopolysaccharide-stimulated RAW264.7 cells. Therefore, the immunomodulatory effect of SZSP may be related to the activation of MAPKs and NF-κB signaling pathways. Based on the above studies, the preliminary purification of SZSP was continued, and S1F2G1 with immunomodulatory activity was obtained. Taken together, SZSP has an immunoregulatory effect in vivo and in vitro and may be a favorable candidate of functional food raw material for regulating immune responses.
Collapse
Affiliation(s)
- Hongyin Zhang
- Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Fengqin Xiao
- Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Jia Li
- Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Rongxin Han
- Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Guangzhe Li
- Changchun University of Chinese Medicine, Changchun, Jilin, China
- Jinlin Provincial Science and Technology Innovation Center of Health Food of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Zhiqiang Wan
- Changchun University of Chinese Medicine, Changchun, Jilin, China
- Jinlin Provincial Science and Technology Innovation Center of Health Food of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Shuai Shao
- Changchun University of Chinese Medicine, Changchun, Jilin, China
- Jinlin Provincial Science and Technology Innovation Center of Health Food of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China
| | - Daqing Zhao
- Changchun University of Chinese Medicine, Changchun, Jilin, China.
- Jinlin Provincial Science and Technology Innovation Center of Health Food of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China.
| | - Mingming Yan
- Changchun University of Chinese Medicine, Changchun, Jilin, China.
- Jinlin Provincial Science and Technology Innovation Center of Health Food of Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin, China.
| |
Collapse
|
3
|
Structural elucidation and immunoregulatory activity of a new polysaccharide obtained from the edible part of Scapharca subcrenata. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
|
4
|
Shi H, Li J, Liu F, Bi S, Huang W, Luo Y, Zhang M, Song L, Yu R, Zhu J. Characterization of a novel polysaccharide from Arca subcrenata and its immunoregulatory activities in vitro and in vivo. Food Funct 2023; 14:822-835. [PMID: 36622059 DOI: 10.1039/d2fo03483b] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Arca subcrenata is an economical edible shellfish. A novel water-soluble α-D-glucan (ASPG-1) with a molecular weight of 2.56 × 106 Da was purified and characterized from A. subcrenata. Its structure was characterized as a repeating unit consisting of α-D-Glcp, (1 → 6)-α-D-Glcp and (1 → 4,6)-α-D-Glcp. ASPG-1 exerted potent immunoregulatory activity by promoting the viability of splenic lymphocytes. Moreover, it enhanced pinocytic capacity, and promoted the secretion of NO and cytokines in RAW264.7 cells. The immunomodulatory mechanism of ASPG-1 involved the activation of the TLR4-MAPK/Akt-NF-κB signaling pathway. ASPG-1 inhibited tumor growth in 4T1 breast cancer mice and its combination with doxorubicin increased antitumor efficacy. The ASPG-1 combination with DOX-treated group (64.8%) showed an improved tumor inhibition rate compared to that of the DOX-treated group (53.3%). The antitumor mechanism of ASPG-1 may involve an enhancement of the immune response of mice to tumors. These results indicated that ASPG-1 could be developed as a potential adjuvant in tumor immunotherapy.
Collapse
Affiliation(s)
- Hui Shi
- Biotechnological Institute of Chinese Materia Medica, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. .,Shandong Academy of Pharmaceutical Sciences, Jinan 250101, PR China
| | - Jianhuan Li
- Biotechnological Institute of Chinese Materia Medica, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Fei Liu
- Shandong Academy of Pharmaceutical Sciences, Jinan 250101, PR China
| | - Sixue Bi
- Biotechnological Institute of Chinese Materia Medica, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Weijuan Huang
- Department of Pharmacology, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Yuanyuan Luo
- Department of Pharmacology, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Man Zhang
- Biotechnological Institute of Chinese Materia Medica, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Liyan Song
- Department of Pharmacology, College of Pharmacy, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China.
| | - Rongmin Yu
- Biotechnological Institute of Chinese Materia Medica, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. .,Shandong Academy of Pharmaceutical Sciences, Jinan 250101, PR China
| | - Jianhua Zhu
- Biotechnological Institute of Chinese Materia Medica, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. .,Shandong Academy of Pharmaceutical Sciences, Jinan 250101, PR China
| |
Collapse
|
5
|
Jin Z, Ma Q, Chen X, Wang H, Zhu J, Lee YK, Zhang H, Zhao J, Lu W, Chen W. An α type gluco-oligosaccharide from brown algae Laminaria japonica stimulated the growth of lactic acid bacteria encoding specific ABC transport system components. Food Funct 2022; 13:11153-11168. [PMID: 36205751 DOI: 10.1039/d2fo01981g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Glucan is the most widely distributed glycan. Many probiotics such as lactic acid bacteria (LAB) encoded corresponding hydrolytic enzymes, which could use these glucans as energy substances. Brown alga is rich in glucan and has high edible and medicinal value, but research on its regulation to probiotics is not detailed enough. In this study, we determined a novel neutral α type gluco-oligosaccharide from the brown alga Laminaria japonica with a degree of polymerization (DP) of 2-8 and a structure that mainly consists of α-(1→4)-linked glycosidic bonds called Laminaria japonica gluco-oligosaccharide (LJGO). Fermentation in vitro and gene-phenotype correlation analyses revealed that LJGO selectively stimulated the growth of the LAB strain encoding a specific ATP-binding cassette (ABC) transport system in a GH13 gene cluster, with apparent differences among 14 tested species. Comparative genomics further revealed that this transport system is species-specific, implying a potential contribution to species evolution. Transcriptomic analysis based on LAB strains cultured on LJGO and 1H-NMR findings of LJGO residues after strain utilization showed that the GH13 gene cluster contains functional LAB genes involved in LJGO utilization. Further verification by gene knockout studies is needed to expand our findings.
Collapse
Affiliation(s)
- Zhen Jin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Qingqing Ma
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Xuemei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
| | - Hongchao Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Jinlin Zhu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
| | - Yuan-Kun Lee
- Department of Microbiology & Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Wenwei Lu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
- (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
| |
Collapse
|
6
|
Structure elucidation and antitumor activity of a water soluble polysaccharide from Hemicentrotus pulcherrimus. Carbohydr Polym 2022; 292:119718. [PMID: 35725190 DOI: 10.1016/j.carbpol.2022.119718] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 05/18/2022] [Accepted: 06/06/2022] [Indexed: 11/20/2022]
Abstract
Sea urchin nowadays serves as a delicacy around the world, and its gonads accumulate abundant polysaccharides before gametogenesis. However, the structure and bioactivity of these polysaccharides remain less well understood. Herein, a water soluble polysaccharide (HPP-1S) with a molecular weight of 2.996 × 107 Da was purified from the gonads of Hemicentrotus pulcherrimus. Chemical, spectroscopic and oligosaccharide sequencing analyses revealed that HPP-1S was a highly homogeneous polysaccharide featuring a linear backbone of 1,4-linked α-d-glucose with 1,6-α-d-glucose and 1,6-α-D-glucuronic acid side chains grafted on the backbone in an alternating pattern. In vitro, HPP-1S can arrest the cell cycle at G2/M and sub-G1 phases, and induce apoptosis in Hela cells potentially by increasing expression ratio of Bax/Bcl-2. In vivo, HPP-1S exhibited obvious antitumor efficacy in Hela xenograft-bearing nude mice with low toxicity. These findings indicated that HPP-1S might serve as a potential low toxic antitumor agent.
Collapse
|
7
|
Li F, Wang K, Dong X, Xu H. Structure, conformation and immunomodulatory activity of a polysaccharide from
Morchella sextelata. Int J Food Sci Technol 2022. [DOI: 10.1111/ijfs.15801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Feng Li
- College of Food Science and Engineering Northwest A&F University Yangling 712100 China
| | - Kunhua Wang
- College of Food Science and Engineering Northwest A&F University Yangling 712100 China
| | - Xiaobo Dong
- College of Food Science and Engineering Northwest A&F University Yangling 712100 China
- Edible Fungi Center Northwest A&F University Yangling 712100 China
| | - Huaide Xu
- College of Food Science and Engineering Northwest A&F University Yangling 712100 China
| |
Collapse
|
8
|
A highly branched α-D-glucan facilitates antitumor immunity by reducing cancer cell CXCL5 expression. Int J Biol Macromol 2022; 209:166-179. [PMID: 35390399 DOI: 10.1016/j.ijbiomac.2022.03.217] [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: 10/25/2021] [Revised: 03/22/2022] [Accepted: 03/31/2022] [Indexed: 11/22/2022]
Abstract
Tumor immunotherapy has emerged as a major pillar of anticancer therapeutic strategies. Natural polysaccharides, known for their strong immunomodulatory activities with relatively low cost and toxicity, are becoming promising prospects for cancer immunotherapy. In this study, we investigated the antitumor mechanism of JNY2PW, a highly branched α-D-glucan previously purified from the traditional marine Chinese medicine Arca inflata. JNY2PW was shown to enhance the sensitivity of tumor cells to co-culture macrophage supernatants by decreasing cancer cell CXCL5 expression. Furthermore, JNY2PW exerted antitumor effects without obvious toxic side effects in tumor-bearing mice by triggering the Akt/mTOR and ERK/GSK3β/β-catenin pathways and attenuating expression of CXCL5 in cancer cells. Remarkably, JNY2PW reduced tumor proliferation and dampened CXCL5 expression in tumor cells overexpressing CXCL5 both in vitro and in vivo. Additionally, JNY2PW blocked epithelial-mesenchymal transition (EMT) in both CXCL5-overexpressing and wild type tumor cells. Our data therefore uncovered a previously unrecognized antitumor mechanism for JNY2PW, suggesting that JNY2PW is a promising adjuvant as an immunomodulator for cancer immunotherapy.
Collapse
|
9
|
Characterization of a neutral polysaccharide from pumpkin (Cucurbita moschata Duch) with potential immunomodulatory activity. Int J Biol Macromol 2021; 188:729-739. [PMID: 34389393 DOI: 10.1016/j.ijbiomac.2021.08.053] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 08/02/2021] [Accepted: 08/06/2021] [Indexed: 01/05/2023]
Abstract
A neutral polysaccharide designated as CMDP-1a (molecular mass 9.263 kDa) was isolated from Cucurbita moschata Duch through hot water extraction, ethanol precipitation, and column chromatography. On the basis of methylation, fourier-transform infrared, monosaccharide composition, and one- and two-dimensional nuclear magnetic resonance spectroscopy analyses, the structure of CMDP-1a was determined to be a backbone composed of α-1,4 linked glucopyranosyl residues with α-Glcp residue linkage at backbone C-6. Atomic force microscopy and scanning electron microscopy analyses revealed that CMDP-1a had a spherical conformation in solution. In immunostimulation assays, CMDP-1a promoted the proliferation of RAW 264.7 macrophages and significantly enhanced their pinocytic and phagocytic capacity. Furthermore, CMDP-1a induced the M1 polarization of original macrophages and the conversion of macrophages from M2 to M1, thereby modulating the balance of M1/M2 macrophages. These results indicated that CMDP-1a might be a potential immunomodulator for food purposes.
Collapse
|
10
|
Yang X, Wei S, Lu X, Qiao X, Simal-Gandara J, Capanoglu E, Woźniak Ł, Zou L, Cao H, Xiao J, Tang X, Li N. A neutral polysaccharide with a triple helix structure from ginger: Characterization and immunomodulatory activity. Food Chem 2021; 350:129261. [PMID: 33610845 DOI: 10.1016/j.foodchem.2021.129261] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/25/2021] [Accepted: 01/30/2021] [Indexed: 02/08/2023]
Abstract
A neutral ginger polysaccharide fraction (NGP) was isolated from ginger, and its primary structures and immunomodulatory activity were investigated. The results showed that NGP had a low molecular weight of 6305 Da. NGP principally consisted of glucose (93.88%) together with minor levels of galactose (3.27%) and arabinose (1.67%). Besides, results of methylation analysis and 1D/2D NMR spectroscopy demonstrated that NGP was α-glucan which had the main chain of 1,4-linked α-d-Glcp and α-d-Glcp residues branched at C-6 position which was different from the common triple helical β-glucans. NGP also displayed a remarkable immunological activity on the RAW264.7 cells in vitro. It could significantly enhance the proliferation of macrophages without cytotoxicity and increase the production of immune substances (NO, TNF-α, IL-1β and IL-6). The secretion at the concentration of 200 μg/mL was 29.41 μM, 1496.71, 44.30 and 1889.83 pg/mL for each substance, respectively. The results indicated that NGP could be a potential immune agent and might provide meaningful information for further chain conformation and immune mechanism research.
Collapse
Affiliation(s)
- Xiaolong Yang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Siqing Wei
- Shandong Foreign Trade Vocational College, Tai'an 271018, China
| | - Xiaoming Lu
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China
| | - Xuguang Qiao
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China.
| | - Jesus Simal-Gandara
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, E-32004 Ourense, Spain.
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
| | - Łukasz Woźniak
- Department of Fruit and Vegetable Product Technology, Institute of Agricultural and Food Biotechnology, 36 Rakowiecka Street, 02532 Warsaw, Poland.
| | - Liang Zou
- Key Laboratory of Coarse Cereal Processing, Ministry of Agriculture and Rural Affairs, Chengdu University, Chengdu 610106, China.
| | - Hui Cao
- College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China.
| | - Jianbo Xiao
- Nutrition and Bromatology Group, Department of Analytical Chemistry and Food Science, Faculty of Food Science and Technology, University of Vigo - Ourense Campus, E-32004 Ourense, Spain; College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China; International Research Center for Food Nutrition and Safety, Jiangsu University, Zhenjiang 212013, China.
| | - Xiaozhen Tang
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China.
| | - Ningyang Li
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, College of Food Science and Engineering, Shandong Agricultural University, Tai'an, China.
| |
Collapse
|
11
|
Development of Broad-Spectrum Antiviral Agents-Inspiration from Immunomodulatory Natural Products. Viruses 2021; 13:v13071257. [PMID: 34203182 PMCID: PMC8310077 DOI: 10.3390/v13071257] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/20/2021] [Accepted: 06/23/2021] [Indexed: 01/04/2023] Open
Abstract
Developing broad-spectrum antiviral drugs remains an important issue as viral infections continue to threaten public health. Host-directed therapy is a method that focuses on potential targets in host cells or the body, instead of viral proteins. Its antiviral effects are achieved by disturbing the life cycles of pathogens or modulating immunity. In this review, we focus on the development of broad-spectrum antiviral drugs that enhance the immune response. Some natural products present antiviral effects mediated by enhancing immunity, and their structures and mechanisms are summarized here. Natural products with immunomodulatory effects are also discussed, although their antiviral effects remain unknown. Given the power of immunity and the feasibility of host-directed therapy, we argue that both of these categories of natural products provide clues that may be beneficial for the discovery of broad-spectrum antiviral drugs.
Collapse
|
12
|
Li LF, But GWC, Zhang QW, Liu M, Chen MM, Wen X, Wu HY, Cheng HY, Puno PT, Zhang JX, Fung HY, Bai SP, Wong TL, Zhao ZZ, Cao H, Tsim KWK, Shaw PC, Han QB, Sun HD. A specific and bioactive polysaccharide marker for Cordyceps. Carbohydr Polym 2021; 269:118343. [PMID: 34294350 DOI: 10.1016/j.carbpol.2021.118343] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 12/18/2022]
Abstract
Cordyceps is one of the most expensive and widely used functional foods. But the authenticity is still a concern due to the lack of appropriate markers. By targeting polysaccharides, this study aimed to develop a specific, and bioactive marker for Cordyceps. Firstly, the results of screening tests of 250 samples by examining both genetic markers and polysaccharide profile showed that a unique polysaccharide fraction (named CCP) was particular to the caterpillar parts. Its potential as a marker was further demonstrated by its ability to induce NO and cytokine production in RAW 264.7 cells. CCP was characterized to be an α-1,4-glucan with a branch at C-6 by the conventional structure analyzing and de novo oligosaccharides sequencing. The content of CCP was closely correlated to the traditional classification criteria. Generally, CCP was a marker that simultaneously enables qualitative and quantitative analysis of Cordyceps.
Collapse
Affiliation(s)
- Li-Feng Li
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; Hong Kong Authentication Centre of Valuable Chinese Medicines, Hong Kong, China
| | - Grace Wing-Chiu But
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Quan-Wei Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Man Liu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Miao-Miao Chen
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Xin Wen
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Hoi-Yan Wu
- Li Dak Sum Yip Yio Chin R & D Centre for Chinese Medicine, The Chinese University of Hong Kong, Hong Kong, China; Institute of Chinese Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Hui-Yuan Cheng
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Pema-Tenzin Puno
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| | - Ji-Xia Zhang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Hau-Yee Fung
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Su-Ping Bai
- School of Pharmacy, Xinxiang Medical University, Xinxiang, China
| | - Tin-Long Wong
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Zhong-Zhen Zhao
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Hui Cao
- School of Pharmacy, Jinan University, Guangzhou, China
| | - Karl Wah-Keung Tsim
- Division of Life Sciences, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Pang-Chui Shaw
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China; Li Dak Sum Yip Yio Chin R & D Centre for Chinese Medicine, The Chinese University of Hong Kong, Hong Kong, China; Institute of Chinese Medicine, The Chinese University of Hong Kong, Hong Kong, China.
| | - Quan-Bin Han
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; Hong Kong Authentication Centre of Valuable Chinese Medicines, Hong Kong, China..
| | - Han-Dong Sun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
| |
Collapse
|
13
|
Nagasaki Y, Abe M, Onishi S, Okamoto Y, Toida T, Higashi K. Structure and Immunomodulatory Activity of Glycogen Derived from Honeybee Larvae (Apis mellifera). Biol Pharm Bull 2021; 44:1156-1159. [PMID: 34092709 DOI: 10.1248/bpb.b21-00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Honeybee larvae have been recognized as nutrient-rich food in many countries. Although glycogen, a storage form of glucose in animals, is synthesized in honeybee larvae, there is no information on the structure of glycan and its biological activity. In this study, we successfully extracted glycogen from honeybee larvae using hot water extraction and investigated the structure and biological activity of glycan. It was found that the molecular weight of glycogen from honeybee larvae is higher than that of glycogen from bovine liver and oysters. In addition, treatment of RAW264.7 cells with glycogen from honeybee larvae resulted in a much higher production of tumor necrosis factor (TNF)-α and interleukin (IL)-6 than treatment with glycogen from either bovine liver or oysters. These results suggest that the high molecular weight glycogen from honeybee larvae is a functional food ingredient with immunomodulatory activity.
Collapse
Affiliation(s)
- Yuto Nagasaki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Misato Abe
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Shoichi Onishi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Yusuke Okamoto
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Toshihiko Toida
- Graduate School of Pharmaceutical Sciences, Chiba University
| | - Kyohei Higashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| |
Collapse
|
14
|
Structural characteristics and in vitro and in vivo immunoregulatory properties of a gluco-arabinan from Angelica dahurica. Int J Biol Macromol 2021; 183:90-100. [PMID: 33872613 DOI: 10.1016/j.ijbiomac.2021.04.077] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 04/11/2021] [Accepted: 04/13/2021] [Indexed: 02/07/2023]
Abstract
A water-soluble polysaccharide identified here as ADP80-2 was acquired from Angelica dahurica. ADP80-2 was a gluco-arabinan composed of arabinose and a trace of glucose with a molecular weight of 9950 g/mol. The backbone of ADP80-2 comprised →5)-α-L-Araf-(1→, →3, 5)-α-L-Araf-(1→, →6)-α-D-Glcp-(1→, with a terminal branch α-L-Araf-(1 → residue. In terms of immunoregulatory activity, ADP80-2 can significantly promote the phagocytosis, the production of nitric oxide (NO), and the secretion of cytokines (IL-6, IL-1β, and TNF-α) of macrophage. In addition to the cellular immunomodulatory activities, the chemokines related to immunoregulation were significantly increased in the zebrafish model after treated with ADP80-2. These biological results indicated that ADP80-2 with immunomodulatory effects was expected to be useful for the development of new immunomodulatory agents. Simultaneously, the discovery of ADP80-2 further revealed the chemical composition of A. dahurica used as a traditional Chinese medicine and spice.
Collapse
|
15
|
Purification and characterization of a novel mixed-linkage α,β-d-glucan from Arca subcrenata and its immunoregulatory activity. Int J Biol Macromol 2021; 182:207-216. [PMID: 33831453 DOI: 10.1016/j.ijbiomac.2021.03.196] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/13/2021] [Accepted: 03/30/2021] [Indexed: 01/03/2023]
Abstract
Arca subcrenata Lischke is a seafood with high nutritional value. In this study, we purified and characterized a novel water-soluble polysaccharide (ASPG-2) from Arca subcrenata with significant immunoregulatory effects and no apparent cell toxicity. ASPG-2 is a class of mixed-linkage α,β-d-glucan backbones with α-linked side chains with a molecular weight of 4.39 × 105 Da. Its structure was characterized as a repeating unit consisting of (1 → 3)-β-d-Glcp, (1 → 4)-α-d-Glcp, (1 → 4,6)-α-d-Glcp and (1 → 6)-α-d-Glcp. Using mouse RAW264.7 macrophages, we demonstrated that ASPG-2 exerted marked immunoregulatory effects by promoting the secretion of NO and increasing the phagocytosis of RAW264.7 cells in vitro. Moreover, flow cytometry analysis of the expression of the cell surface molecule CD86 revealed that ASPG-2 could polarize RAW264.7 cells into the M1 type. The immunomodulatory mechanism of ASPG-2 in macrophages was associated with the activation of the TLR4-MAPK/Akt-NF-κB signalling pathways. These results indicated that ASPG-2 might be researched and developed as a potential immunomodulatory agent or health product from marine organisms.
Collapse
|