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Yue Y, Han J, Shen X, Zhu F, Liu Y, Zhang W, Xia W, Wu M. Structural characteristics, immune-activating mechanisms in vitro, and immunomodulatory effects in vivo of the exopolysaccharide EPS53 from Streptococcus thermophilus XJ53. Carbohydr Polym 2024; 340:122259. [PMID: 38858019 DOI: 10.1016/j.carbpol.2024.122259] [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: 01/21/2024] [Revised: 05/08/2024] [Accepted: 05/10/2024] [Indexed: 06/12/2024]
Abstract
Our previous investigations have successfully identified the repeating structural units of EPS53, an exopolysaccharide derived from Streptococcus thermophilus XJ53 fermented milk, and substantiated its potential immunomodulatory properties. The present study further elucidated the structural characteristics of EPS53 and investigated the underlying mechanisms governing its in vitro immunoreactivity as well as its in vivo immunoreactivity. The results obtained from multi-detector high performance gel filtration chromatography revealed that EPS53 adopted a rigid rod conformation in aqueous solution, with the weight-average molecular weight of 1464 kDa, the number-average molecular weight of 694 kDa, and the polydispersity index of 2.11. Congo red experiment confirmed the absence of a triple helix conformation. Scanning electron microscopy showed that EPS53 displayed a three-dimensional fibrous structure covered with flakes. The in vitro findings indicated that EPS53 enhanced phagocytosis ability, reactive oxygen species (ROS) production, and cytokine levels of macrophages via the TLR4-mediated NF-κB/MAPK signaling pathways as confirmed by immunofluorescence staining experiments, inhibition blocking experiments, and Western blot assay. Additionally, the in vivo experiments demonstrated that EPS53 significantly increased macrophage and neutrophil number while enhancing NO and ROS levels in zebrafish larvae; thus, providing further evidence for the immunomodulatory efficacy of EPS53.
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Affiliation(s)
- Yun Yue
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jin Han
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Centre of Dairy Biotechnology, Dairy Research Institute, Bright Dairy & Food Co., Ltd., Shanghai 200436, PR China
| | - Xinyan Shen
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Fei Zhu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Yikang Liu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Wenqing Zhang
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Wei Xia
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Mengqi Wu
- Shanghai Key Laboratory of Functional Materials Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China; Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
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2
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Wang M, Geng L, Zhou J, Gu Z, Xue B, Shu C, Zhang J. Gut Microbiota Mediate Plutella xylostella Susceptibility to Bt Cry1Ac Protoxin and Exopolysaccharides. Int J Mol Sci 2024; 25:8483. [PMID: 39126052 PMCID: PMC11313015 DOI: 10.3390/ijms25158483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 07/31/2024] [Accepted: 08/01/2024] [Indexed: 08/12/2024] Open
Abstract
Exopolysaccharides (EPSs) are carbohydrate polymers that are synthesized and secreted into the extracellular during the growth of microorganisms. Bacillus thuringiensis (Bt) is a type of entomopathogenic bacterium, that produces various insecticidal proteins and EPSs. In our previous study, the EPSs produced by Bt strains were first found to enhance the toxicity of insecticidal crystal proteins against Plutella xylostella. However, the response of the intestinal bacterial communities of P. xylostella under the action of EPSs is still unelucidated. In this study, 16S rRNA amplicon sequencing was used to characterize the intestinal bacterial communities in P. xylostella treated with EPSs alone, Cry1Ac protoxin alone, and both the Cry1Ac protoxin and EPSs. Compared with the control group, alpha diversity indices, the Chao1 and ACE indices were significantly altered after treatment with EPSs alone, and no significant difference was observed between the groups treated with Cry1Ac protoxin alone and Cry1Ac protoxin + EPSs. However, compared with the gut bacterial community feeding on Cry1Ac protoxin alone, the relative abundance of 31 genera was significantly changed in the group treated with Cry1Ac protoxin and EPSs. The intestinal bacteria, through the oral of Cry1Ac protoxin and EPSs, significantly enhanced the toxicity of the Cry1Ac protoxin towards the axenic P. xylostella. In addition, the relative abundance of the 16S rRNA gene in the chloroplasts of Brassica campestris decreased after adding EPSs. Taken together, these results show the vital contribution of the gut microbiota to the Bt strain-killing activity, providing new insights into the mechanism of the synergistic insecticidal activity of Bt proteins and EPSs.
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Affiliation(s)
- Meiling Wang
- Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taigu 030801, China; (M.W.)
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (L.G.)
| | - Lili Geng
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (L.G.)
| | - Jinxi Zhou
- Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taigu 030801, China; (M.W.)
| | - Ziqiong Gu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (L.G.)
| | - Bai Xue
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (L.G.)
| | - Changlong Shu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (L.G.)
| | - Jie Zhang
- Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taigu 030801, China; (M.W.)
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; (L.G.)
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Wang Y, Liu R, Xie Z, Du L, Wang Y, Han J, Zhang L. Structure characterization and immunological activity of capsular polysaccharide from live and heat-killed Lacticaseibacillus paracasei 6235. Int J Biol Macromol 2024; 277:134010. [PMID: 39032891 DOI: 10.1016/j.ijbiomac.2024.134010] [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: 02/01/2024] [Revised: 06/22/2024] [Accepted: 07/17/2024] [Indexed: 07/23/2024]
Abstract
Capsular polysaccharide (CPS) as a probiotic component has the ability to regulate the function of the host's immune system. However, how the structure and function of heat-killed CPS are altered remains unclear. In the present study, CPS were isolated and purified from live (LCPS) and heat-killed (HCPS) Lacticaseibacillus paracasei 6235. The differences in structure and immunomodulation between LCPS and HCPS were compared and analyzed. The results demonstrate that after heat killed, the molecular weight of CPS decreased from 23.4 kDa to 17.5 kDa, with the disappearance of galactosamine in the monosaccharide composition, and changes in the microstructure. Methylation analysis and nuclear magnetic resonance analysis revealed that the LCPS and HCPS are similar in structure, which main units of →3,4)-α-D-Glcp-(1→4)-α-D-Galp-(1→3)-β-L-Rhap-(1→6)-β-D-Galp-(1→, and repeating units of →3,4)-α-D-Glcp-(1→, →3)-β-L-Rhap-(1→, and →4)-α-D-Galp-(1→ residues. Furthermore, both LCPS and HCPS significantly downregulated the expression of pro-inflammatory cytokines in RAW264.7 cells induced by LPS. Specifically, HCPS reduced the levels of IL-6 and IL-1β by 79.38 % and 88.42 %, respectively, compared to LCPS. Concurrently, both LCPS and HCPS effectively mitigated inflammatory responses through the NF-κB and MAPK signaling pathways. Moreover, compared to LCPS, HCPS increased the protein expression levels of NF-κB/p-NF-κB and IκB/p-IκB by 26.14 % and 28.92 %, respectively. These results suggest that CPS has a role in modulating immune responses and that HCPS is more effective. This study can be further developed into new products related to postbiotics.
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Affiliation(s)
- Yucong Wang
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Rongxu Liu
- Heilongjiang Green Food Science Research Institute, Harbin 150030, China
| | - Zhixin Xie
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Lei Du
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Yingnan Wang
- Heilongjiang Green Food Science Research Institute, Harbin 150030, China
| | - Jianchun Han
- College of Food Science, Northeast Agricultural University, Harbin 150030, China; Heilongjiang Green Food Science Research Institute, Harbin 150030, China.
| | - Lili Zhang
- College of Food Science, Northeast Agricultural University, Harbin 150030, China.
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4
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Goetsch AG, Ufearo D, Keiser G, Heiss C, Azadi P, Hershey DM. An exopolysaccharide pathway from a freshwater Sphingomonas isolate. J Bacteriol 2024:e0016924. [PMID: 39007563 DOI: 10.1128/jb.00169-24] [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: 04/23/2024] [Accepted: 06/17/2024] [Indexed: 07/16/2024] Open
Abstract
Bacteria embellish their cell envelopes with a variety of specialized polysaccharides. Biosynthesis pathways for these glycans are complex, and final products vary greatly in their chemical structures, physical properties, and biological activities. This tremendous diversity comes from the ability to arrange complex pools of monosaccharide building blocks into polymers with many possible linkage configurations. Due to the complex chemistry of bacterial glycans, very few biosynthetic pathways have been defined in detail. As part of an initiative to characterize novel polysaccharide biosynthesis enzymes, we isolated a bacterium from Lake Michigan called Sphingomonas sp. LM7 that is proficient in exopolysaccharide (EPS) production. We identified genes that contribute to EPS biosynthesis in LM7 by screening a transposon mutant library for colonies displaying altered colony morphology. A gene cluster was identified that appears to encode a complete wzy/wzx-dependent polysaccharide assembly pathway. Deleting individual genes in this cluster caused a non-mucoid phenotype and a corresponding loss of EPS secretion, confirming the role of this gene cluster in polysaccharide production. We extracted EPS from LM7 cultures and determined that it contains a linear chain of 3- and 4-linked glucose, galactose, and glucuronic acid residues. Finally, we show that the EPS pathway in Sphingomonas sp. LM7 diverges from that of sphingan-family EPSs and adhesive polysaccharides such as the holdfast that are present in other Alphaproteobacteria. Our approach of characterizing complete biosynthetic pathways holds promise for engineering polysaccharides with valuable properties. IMPORTANCE Bacteria produce complex polysaccharides that serve a range of biological functions. These polymers often have properties that make them attractive for industrial applications, but they remain woefully underutilized. In this work, we studied a novel polysaccharide called promonan that is produced by Sphingomonas sp. LM7, a bacterium we isolated from Lake Michigan. We extracted promonan from LM7 cultures and identified which sugars are present in the polymer. We also identified the genes responsible for polysaccharide production. Comparing the promonan genes to those of other bacteria showed that promonan is distinct from previously characterized polysaccharides. We conclude by discussing how the promonan pathway could be used to produce new polysaccharides through genetic engineering.
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Affiliation(s)
- Alexandra G Goetsch
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Daniel Ufearo
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Griffin Keiser
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Christian Heiss
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - David M Hershey
- Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, USA
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5
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Fan X, Li K, Qin X, Li Z, Du Y. Structural Characterization and Screening for Anti-inflammatory Activity of Polysaccharides with Different Molecular Weights from Astragali Radix. Chem Biodivers 2024; 21:e202400262. [PMID: 38705857 DOI: 10.1002/cbdv.202400262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/30/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
Astragali Radix polysaccharides (APSs) exhibit a broad spectrum of biological activity, which is mainly related to immune regulation. At present, most available studies focus on total APSs or a certain component of APSs. However, systematic structural study and screening for the anti-inflammatory activity of polysaccharides with different molecular weights (MW) have yet to be conducted. In this study, lipopolysaccharide (LPS)-induced RAW264.7 macrophages were used as a model to investigate the anti-inflammatory activity of APSs and its fractions. The results revealed that fraction APS-I had better anti-inflammatory effects than APS-II. After APS-I was hydrolyzed by trifluoroacetic acid (TFA), the resulting degradation products oligosaccharides were fully methylated. These derivatized oligosaccharides were further analyzed by MALDI-TOF-MS and UPLC-Q-Exactive-MS/MS. The results showed that APS-I was a hetero-polysaccharide with a molecular weight of about 2.0×106 Da, mainly consisting of glucose (46.8 %) and galactose (34.4 %). The degree of polymerization of Astragali Radix oligosaccharides (APOS) was 2-16. APOS were identified as 1,4-glucooligosaccharides and 1,4-galactooligosaccharides. The findings of this study lay the foundation for further elucidation of structure-function relationships of APSs and provide guidance for the development of anti-inflammatory drugs.
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Affiliation(s)
- Xinhui Fan
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, China
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China
- Engineering Research Center of Glycoconjugates of Ministry of Education, School of Life Sciences, Northeast Normal University, Changchun, China
| | - Ke Li
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, China
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
| | - Xuemei Qin
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, China
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China
| | - Zhenyu Li
- Modern Research Center for Traditional Chinese Medicine, Shanxi University, Taiyuan, China
- The Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, Taiyuan, China
| | - Yuguang Du
- Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
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6
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Akhtar N, Wani AK, Sharma NR, Sanami S, Kaleem S, Machfud M, Purbiati T, Sugiono S, Djumali D, Retnaning Prahardini PE, Purwati RD, Supriadi K, Rahayu F. Microbial exopolysaccharides: Unveiling the pharmacological aspects for therapeutic advancements. Carbohydr Res 2024; 539:109118. [PMID: 38643705 DOI: 10.1016/j.carres.2024.109118] [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: 12/16/2023] [Revised: 04/15/2024] [Accepted: 04/15/2024] [Indexed: 04/23/2024]
Abstract
Microbial exopolysaccharides (EPSs) have emerged as a fascinating area of research in the field of pharmacology due to their diverse and potent biological activities. This review paper aims to provide a comprehensive overview of the pharmacological properties exhibited by EPSs, shedding light on their potential applications in various therapeutic areas. The review begins by introducing EPSs, exploring their various sources, significance in microbial growth and survival, and their applications across different industries. Subsequently, a thorough examination of the pharmaceutical properties of microbial EPSs unveils their antioxidant, immunomodulatory, antimicrobial, antidepressant, antidiabetic, antiviral, antihyperlipidemic, hepatoprotective, anti-inflammatory, and anticancer activities. Mechanistic insights into how different EPSs exert these therapeutic effects have also been discussed in this review. The review also provides comprehensive information about the monosaccharide composition, backbone, branches, glycosidic bonds, and molecular weight of pharmacologically active EPSs from various microbial sources. Furthermore, the factors that can affect the pharmacological activities of EPSs and approaches to improve the EPSs' pharmacological activity have also been discussed. In conclusion, this review illuminates the immense pharmaceutical promise of microbial EPS as versatile bioactive compounds with wide-ranging therapeutic applications. By elucidating their structural features, biological activities, and potential applications, this review aims to catalyze further research and development efforts in leveraging the pharmaceutical potential of microbial EPS for the advancement of human health and well-being, while also contributing to sustainable and environmentally friendly practices in the pharmaceutical industry.
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Affiliation(s)
- Nahid Akhtar
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, (144411), Punjab, India
| | - Atif Khurshid Wani
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, (144411), Punjab, India.
| | - Neeta Raj Sharma
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, (144411), Punjab, India
| | - Samira Sanami
- Health Promotion Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Shaikh Kaleem
- School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, (144411), Punjab, India
| | - Moch Machfud
- Research Center for Estate Crops, National Research and Innovation Agency, Bogor, (16911), Indonesia
| | - Titiek Purbiati
- Research Center for Horticulture, National Research and Innovation Agency, Bogor, (16911), Indonesia
| | - Sugiono Sugiono
- Research Center for Horticulture, National Research and Innovation Agency, Bogor, (16911), Indonesia
| | - Djumali Djumali
- Research Center for Estate Crops, National Research and Innovation Agency, Bogor, (16911), Indonesia
| | | | - Rully Dyah Purwati
- Research Center for Estate Crops, National Research and Innovation Agency, Bogor, (16911), Indonesia
| | - Khojin Supriadi
- Research Center for Food Crops, National Research and Innovation Agency, Bogor, (16911), Indonesia
| | - Farida Rahayu
- Research Center for Genetic Engineering, National Research and Innovation Agency, Bogor, (16911), Indonesia
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Tao T, Zhang L, Yu T, Ma J, Lu S, Ren J, Li X, Guo X. Exopolysaccharide production by Lactobacillus plantarum T10 is responsible for the probiotic activity in enhancing intestinal barrier function in vitro and in vivo. Food Funct 2024; 15:3583-3599. [PMID: 38469921 DOI: 10.1039/d4fo00526k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
Lactobacillus probiotics exert their effects in a strain-specific and metabolite-specific manner. This study aims to identify lactobacilli that can effectively enhance the intestinal barrier function both in vitro and in vivo and to investigate the underlying metabolite and molecular mechanisms involved. Nine Lactobacillus isolates were evaluated for their ability to enhance the IPEC-J2 cellular barrier function and for their anti-inflammatory and anti-apoptotic effects in IPEC-J2 cells after an enterotoxigenic Escherichia coli challenge. Of the nine isolates, L. plantarum T10 demonstrated significant advantages in enhancing the cellular barrier function and displayed anti-inflammatory and anti-apoptotic activities in vitro. The bioactivities of L. plantarum T10 were primarily attributed to the production of exopolysaccharides, which exerted their effects through the TLR-mediated p38 MAPK pathway in ETEC-challenged IPEC-J2 cells. Furthermore, the production of EPS by L. plantarum T10 led to the alleviation of dextran sulfate sodium-induced colitis by reducing intestinal damage and enhancing the intestinal barrier function in mice. The EPS is classified as a heteropolysaccharide with an average molecular weight of 23.0 kDa. It is primarily composed of mannose, glucose, and ribose. These findings have practical implications for the targeted screening of lactobacilli used in the production of probiotics and postbiotics with strain-specific features of exopolysaccharides.
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Affiliation(s)
- Ting Tao
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
| | - Li Zhang
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
| | - Tianfei Yu
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
| | - Jiaxue Ma
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
| | - Shuang Lu
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
| | - Jing Ren
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
| | - Xiangyu Li
- Hubei Province Nutrition Chemicals Biosynthetic Engineering Technology Research Center, Wuhan 430073, China
| | - Xiaohua Guo
- College of Life Science, South-Central Minzu University, No. 182, Minyuan Road, Hongshan District, Wuhan City, 430074, China.
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8
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Huang L, Sun Q, Li Q, Li X. Screening and characterization of an anti-inflammatory pectic polysaccharide from Cucurbita moschata Duch. Int J Biol Macromol 2024; 264:130510. [PMID: 38447847 DOI: 10.1016/j.ijbiomac.2024.130510] [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: 08/05/2023] [Revised: 01/15/2024] [Accepted: 02/26/2024] [Indexed: 03/08/2024]
Abstract
Pectin polysaccharides have demonstrated diverse biological activities, however, the inflammatory potential of pectin polysaccharides extracted from Cucurbita moschata Duch remains unexplored. This study aims to extract, characterize and evaluate the effects of pumpkin pectin polysaccharide on lipopolysaccharide (LPS)-induced inflammatory response in RAW264.7 cells and dextran sulfate sodium (DSS)-induced colitis in mice, along with its underlying mechanism of action. Initially, we extracted three fractions of pectin polysaccharides from pumpkin and screened them for anti-inflammatory activity in LPS-induced macrophages, identifying CMDP-3a as the most potent anti-inflammatory fraction. Subsequently, CMDP-3a underwent comprehensive characterization through chromatography and spectroscopic analysis, revealing CMDP-3a as an RG-I-HG type pectin polysaccharide with →4)-α-D-GalpA-(1 → and →4)-α-D-GalpA-(1 → 2,4)-α-L-Rhap-(1 → as the main chain. Further, in the LPS-induced RAW264.7 cells model, treatment with CMDP-3a significantly down-regulated the mRNA expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), and pro-inflammatory cytokines (IL-1β, TNF-α, and IL-6) by inhibiting the MAPK and NF-κB signaling pathways. Finally, in a mouse colitis model, CMDP-3a administration obviously inhibited DSS-induced pathological alterations and reduced inflammatory cytokine expressions in the colonic tissues by down-regulating the TLR4/NF-κB and MAPK pathways. These findings provide a molecular basis for the potential application of CMDP-3a in reducing inflammatory responses.
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Affiliation(s)
- Linlin Huang
- The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan 250014, PR China
| | - Qi Sun
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Quanhong Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China
| | - Xin Li
- The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Jinan 250014, PR China; School of Clinical and Basic Medical Sciences, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250117, PR China; State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China.
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9
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Zhang J, Zhang H, Xiao Y, Wang H, Zhang H, Lu W. Interspecific differences and mechanisms of Lactobacillus-derived anti-inflammatory exopolysaccharides. Int J Biol Macromol 2024; 263:130313. [PMID: 38395278 DOI: 10.1016/j.ijbiomac.2024.130313] [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: 09/12/2023] [Revised: 01/08/2024] [Accepted: 02/18/2024] [Indexed: 02/25/2024]
Abstract
Accumulating evidence has revealed the anti-inflammatory properties of Lactobacillus-derived exopolysaccharides (EPSs). However, interspecific differences among these Lactobacillus-derived anti-inflammatory EPSs have not been investigated. Cell experiments showed that Limosilactobacillus fermentum, Lacticaseibacillus rhamnosus, and Lactiplantibacillus plantarum-derived EPSs exhibited excellent anti-inflammatory efficacy in vitro. Subsequently, we used Lactobacillus-derived EPSs to treat colitis in mice. There was no significant difference in EPS's repair of the intestinal barrier from the five Lactobacillus species. However, Ligilactobacillus salivarius-derived EPSs and L. plantarum-derived EPSs more potently reduced proinflammatory cytokines (TNF-α, IL-1β, IL-6, TNF-γ, and IL-17), increasing IL-10 concentrations in the colon. Lactobacillus-derived EPS moieties from five species regulate intestinal bacteria at the strain level. Immunofluorescence staining revealed that owing to the different infiltration and polarization effects of Lactobacillus-derived EPSs on macrophages, the in vitro and in vivo anti-inflammatory effects of Lactobacillus-derived EPSs were inconsistent. The structure-activity relationship showed that Lactobacillus-derived EPSs with high fructose content had excellent anti-inflammatory activity in vivo. The results mentioned above revealed that the anti-inflammatory activity of Lactobacillus-derived EPSs had interspecific variability, and the mechanism of anti-inflammatory action in vitro and in vivo was different.
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Affiliation(s)
- Jie Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Huiqin Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Yue Xiao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Hongchao Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Hao Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Wenwei Lu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China.
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10
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Al-Najjar MAA, Abdulrazzaq SB, Alzaghari LF, Mahmod AI, Omar A, Hasen E, Athamneh T, Talib WH, Chellappan DK, Barakat M. Evaluation of immunomodulatory potential of probiotic conditioned medium on murine macrophages. Sci Rep 2024; 14:7126. [PMID: 38531887 DOI: 10.1038/s41598-024-56622-0] [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: 07/24/2023] [Accepted: 03/08/2024] [Indexed: 03/28/2024] Open
Abstract
Probiotics are a mixture of beneficial live bacteria and/or yeasts that naturally exist in our bodies. Recently, numerous studies have focused on the immunostimulatory effects of single-species or killed multi-species probiotic conditioned mediums on macrophages. This study investigates the immunostimulatory effect of commercially available active, multi-species probiotic conditioned medium (CM) on RAW264.7 murine macrophages. The probiotic CM was prepared by culturing the commercially available probiotic in a cell-culture medium overnight at 37 °C, followed by centrifugation and filter-sterilization to be tested on macrophages. The immunostimulatory effect of different dilution percentages (50%, 75%, 100%) of CM was examined using the MTT assay, proinflammatory cytokine (tumor necrosis factor TNF-alpha) production in macrophages, migration, and phagocytosis assays. For all the examined CM ratios, the percentages of cell viability were > 80%. Regarding the migration scratch, TNF-alpha and phagocytosis assays, CM demonstrated a concentration-dependent immunostimulatory effect. However, the undiluted CM (100%) showed a significant (p-value < 0.05) stimulatory effect compared to the positive and negative controls. The findings suggest that the secretions and products of probiotics, as measured in the CM, may be closely associated with their immune-boosting effects. Understanding this relationship between probiotic secretions and immune function is crucial for further exploring the potential benefits of probiotics in enhancing overall health and well-being.
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Affiliation(s)
| | | | | | | | - Amin Omar
- Faculty of Pharmacy, Applied Science Private University, 11937, Amman, Jordan
| | - Eliza Hasen
- MEA Research Center, Middle East University, Amman, Jordan
| | - Tamara Athamneh
- Institute of Nanotechnology, Jordan University of Science and Technology, Irbid, Jordan
| | - Wamidh H Talib
- Faculty of Allied Medical Sciences, Applied Science Private University, 11937, Amman, Jordan
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, 57000, Bukit Jalil, Kuala Lumpur, Malaysia
| | - Muna Barakat
- Faculty of Pharmacy, Applied Science Private University, 11937, Amman, Jordan.
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11
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López-García E, Marín-Gordillo A, Sánchez-Hidalgo M, Ávila-Román J, Romero-Gil V, Bermúdez-Oria A, Benítez-Cabello A, Garrido-Fernández A, Rodríguez-Gómez F, Arroyo-López FN. Functional features of the exopolysaccharide extracts produced by Lactiplantibacillus strains isolated from table olives. Food Funct 2024; 15:1938-1947. [PMID: 38269604 DOI: 10.1039/d3fo04223e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
This study evaluates the functional characteristics of the exopolysaccharide (EPS) extracts produced by various strains of Lactiplantibacillus pentosus (LPG1, 119, 13B4, and Lp13) and Lactiplantibacillus plantarum (Lp15) isolated from table olives. None of the EPS crude extracts showed cytotoxicity when administered to THP-1 human macrophage cells at dosages ranging from 6.25 to 50 μg mL-1. Many exhibited anti-inflammatory properties (reduction of pro-inflammatory cytokines TNF-α and IL-6 production) and antioxidant activity (reduction of ROS%) when macrophages were stimulated with Escherichia coli lipopolysaccharide. Notably, the EPS extract produced by the L. pentosus LPG1 strain had the best results corroborated by western blot immune analysis for differential expression of COX-2, Nrf-2, and HO-1 proteins, with the most significant antioxidant and anti-inflammatory response observed at a dosage of 50 μg mL-1. Chemical analysis revealed that the EPS extract produced by this strain contains a heteropolymer composed of mannose (35.45%), glucose (32.99%), arabinose (17.93%), xylose (7.48%), galactose (4.03%), rhamnose (1.34%), and fucose (0.77%). Finally, we conducted response surface methodology to model the EPS extract production by L. pentosus LPG1 considering pH (3.48-8.52), temperature (16.59-33.41 °C) and salt concentration (0.03-8.77% NaCl) as independent variables. The model identified linear effects of salt and pH and quadratic effects of salt as significant terms. The maximum EPS extract production (566 mg L-1) in a synthetic culture medium (MRS) was achieved at pH 7.5, salt 7.0%, and a temperature of 20 °C. These findings suggest the potential for novel applications for the EPS produced by L. pentosus LPG1 as nutraceutical candidates for use in human diets.
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Affiliation(s)
- Elio López-García
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Ana Marín-Gordillo
- Technological Applications for Improvement of the Quality and Safety in Foods. R&D Division, Avda. Diego Martín Barrio 10. Second Floor, 41013, Seville, Spain
| | - Marina Sánchez-Hidalgo
- Department of Pharmacology, Faculty of Pharmacy. University of Seville, 41012, Seville, Spain
| | - Javier Ávila-Román
- Department of Pharmacology, Faculty of Pharmacy. University of Seville, 41012, Seville, Spain
| | - Verónica Romero-Gil
- Department of Food Science and Technology. University of Cordoba, Carretera Madrid-Cádiz Km 396A. Darwin Building, 14071, Cordoba, Spain
| | - Alejandra Bermúdez-Oria
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Antonio Benítez-Cabello
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Antonio Garrido-Fernández
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Francisco Rodríguez-Gómez
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Francisco Noé Arroyo-López
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
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12
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Wang K, Sun J, Zhao J, Gao Y, Yao D, Sun D, Tai M, Pan Y, Wang Y, Lu B, Zuo F. Immunomodulatory activity and protective effect of a capsular polysaccharide in Caenorhabditis elegans, isolated from Lactobacillus fermentum GBJ. Int J Biol Macromol 2023; 253:127443. [PMID: 37844812 DOI: 10.1016/j.ijbiomac.2023.127443] [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: 04/07/2023] [Revised: 08/31/2023] [Accepted: 10/12/2023] [Indexed: 10/18/2023]
Abstract
A capsular polysaccharide, namely CPS-2, was isolated from Lactobacillus fermentum GBJ, purified using DEAE-52 anion exchange chromatography, and structurally characterized. We found that CPS-2 is homogenous, has an average molecular weight of 377 KDa, and is mainly composed of galactose and glucose at a molar ratio of 1.54:1.00. Its backbone comprises α-D-Galp-(1 → 3), α-D-Galp-(1 → 3,6), β-D-Glcp-(1 → 2), β-D-Galp-(1 → 6), and α-D-Galp-(1 → 4) residues with a side chain of β-D-Glcp-(1→). CPS-2 exerts an immunomodulatory effect by improving the proliferation and phagocytosis of macrophage RAW264.7 and promoting the secretion of NO and cytokines. The maximum secretion levels of IL-1β, IL-6, IL-10, and TNF-α were 1.96-, 0.11-, 0.22-, and 0.46-fold higher than those of the control, respectively. Furthermore, CPS-2 could significantly enhance the antioxidant system, extend lifespan, and improve stress tolerance of Caenorhabditis elegans at both exposure doses of 31.25 and 62.5 μg/mL. The average lifespan of nematodes reached a maximum in the 62.5 μg/mL-treated group after 10.39 days, 6.56 h, and 23.56 h in normal, oxidative stress, and heat shock environment, with extension percentages of 16.61 %, 43.23 %, and 15.77 %, respectively; therefore, CPS-2 displays an anti-aging effect. The significant bioactivity of CPS-2 promotes its application as a promising immunomodulatory and anti-aging ingredient in the food or pharmaceutical field.
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Affiliation(s)
- Kun Wang
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing 163319, PR China
| | - Jingchen Sun
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Jing Zhao
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Yongjiao Gao
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Di Yao
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Daqing Sun
- National Coarse Cereals Engineering Research Center, Daqing 163319, PR China
| | - Mengdie Tai
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Yuxi Pan
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Yanjie Wang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Baoxin Lu
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing 163319, PR China.
| | - Feng Zuo
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, PR China.
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13
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Goetsch AG, Ufearo D, Keiser G, Heiss C, Azadi P, Hershey DM. A novel exopolysaccharide pathway from a freshwater Sphingomonas isolate. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.03.565537. [PMID: 37961232 PMCID: PMC10635127 DOI: 10.1101/2023.11.03.565537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Bacteria embellish their cell envelopes with a variety of specialized polysaccharides. Biosynthesis pathways for these glycans are complex, and final products vary greatly in their chemical structures, physical properties and biological activities. This tremendous diversity comes from the ability to arrange complex pools of monosaccharide building blocks into polymers with many possible linkage configurations. Due to the complex chemistry of bacterial glycans, very few biosynthetic pathways have been defined in detail. To better understand the breadth of polysaccharide production in nature we isolated a bacterium from Lake Michigan called Sphingomonas sp. LM7 that is proficient in exopolysaccharide (EPS) production. We identified genes that contribute to EPS biosynthesis in LM7 by screening a transposon mutant library for colonies displaying altered colony morphology. A gene cluster was identified that appears to encode a complete wzy/wzx-dependent polysaccharide assembly pathway. Deleting individual genes in this cluster caused a non-mucoid phenotype and a corresponding loss of EPS secretion, confirming that LM7 assembles a novel wzy/wzx-dependent polysaccharide. We extracted EPS from LM7 cultures and showed that it contains a linear chain of 3- and 4- linked glucose, galactose, and glucuronic acid residues. Finally, we found that the EPS pathway we identified diverges from those of adhesive polysaccharides such as the holdfast that are conserved in higher Alphaproteobacteria. Our approach of characterizing complete biosynthetic pathways holds promise for engineering of polysaccharides with valuable properties.
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Affiliation(s)
- Alexandra G. Goetsch
- Department of Bacteriology, University of Wisconsin – Madison, Madison, WI 53706, USA
| | - Daniel Ufearo
- Department of Bacteriology, University of Wisconsin – Madison, Madison, WI 53706, USA
| | - Griffin Keiser
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Christian Heiss
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602, USA
| | - David M. Hershey
- Department of Bacteriology, University of Wisconsin – Madison, Madison, WI 53706, USA
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14
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Xie Y, Pei F, Liu Y, Liu Z, Chen X, Xue D. Fecal fermentation and high-fat diet-induced obesity mouse model confirmed exopolysaccharide from Weissella cibaria PFY06 can ameliorate obesity by regulating the gut microbiota. Carbohydr Polym 2023; 318:121122. [PMID: 37479437 DOI: 10.1016/j.carbpol.2023.121122] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 05/23/2023] [Accepted: 06/11/2023] [Indexed: 07/23/2023]
Abstract
Obesity associated with diet and intestinal dysbiosis is a worldwide public health crisis, and exopolysaccharides (EPS) produced by lactic acid bacteria (LAB) have prebiotic potential to ameliorate obesity. Therefore, the present study obtained LAB with the ability to produce high EPS, examined the structure of EPS, and explained its mechanism of alleviating obesity by in vivo and in vitro models. The results showed that Weissella cibaria PFY06 with a high EPS yield was isolated from strawberry juice, and pure polysaccharide (PFY06-EPS) was purified by Sephadex G-100. The structural characteristics of PFY06-EPS showed that the molecular weight was 8.08 × 106 Da and composed of α-(1,6)-D glucosyl residues. An in vitro simulated human colon fermentation test demonstrated that PFY06-EPS increased the abundance of Prevotella and Bacteroides. Cell tests confirmed that PFY06-EPS after fecal fermentation inhibited fat accumulation by promoting the secretion of endogenous gastrointestinal hormones and insulin and inhibiting the secretion of inflammatory factors. Notably, PFY06-EPS reduced weight gain, fat accumulation, inflammatory reactions and insulin resistance in a high-fat diet-induced obesity mouse model and improved glucolipid metabolism. PFY06-EPS intervention reversed obesity-induced microflora disorders, such as reducing the Firmicutes/Bacteroides ratio and increasing butyrate-producing bacteria (Roseburia and Oscillibacter), and reduced endotoxemia to maintain intestinal barrier integrity. Therefore, in vivo and in vitro models showed that PFY06-EPS had potential as a prebiotic that may play an anti-obesity role by improving the function of the gut microbiota.
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Affiliation(s)
- Yinzhuo Xie
- Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar, 161006, China
| | - Fangyi Pei
- Office of Academic Research, Qiqihar Medical University, Qiqihar 161006, China.
| | - Yuchao Liu
- Office of Academic Research, Qiqihar Medical University, Qiqihar 161006, China
| | - Zhenyan Liu
- Office of Academic Research, Qiqihar Medical University, Qiqihar 161006, China
| | - Xiaoting Chen
- Office of Academic Research, Qiqihar Medical University, Qiqihar 161006, China
| | - Di Xue
- Research Institute of Medicine and Pharmacy, Qiqihar Medical University, Qiqihar, 161006, China
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15
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Kumari M, Haranahalli Nataraj B, Prasad WG, Ali SA, Behare PV. Multi-Faceted Bioactivity Assessment of an Exopolysaccharide from Limosilactobacillus fermentum NCDC400: Antioxidant, Antibacterial, and Immunomodulatory Proficiencies. Foods 2023; 12:3595. [PMID: 37835248 PMCID: PMC10572761 DOI: 10.3390/foods12193595] [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: 08/18/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/15/2023] Open
Abstract
Exopolysaccharides (EPS) are acknowledged for their diverse functional and technological properties. This study presents the characterization of EPS400, an acidic exopolysaccharide sourced from the native probiotic Limosilactobacillus fermentum NCDC400. Notably, this strain has demonstrated previous capabilities in enhancing dairy food texture and displaying in vivo hypocholesterolemic activity. Our investigation aimed to unveil EPS400's potential biological roles, encompassing antioxidant, antibacterial, and immunomodulatory activities. The results underscore EPS400's prowess in scavenging radicals, including the 2,2-diphenyl-1-picrylhydrazyl radical, 2,2'-azino-di-(3-ethylbenzthiazoline sulfonic acid) radical, superoxide radical, hydroxyl radical, and chelating activity targeting the ferrous ion. Furthermore, EPS400 displayed substantial antibacterial effectiveness against prevalent food spoilage bacteria such as Pseudomonas aeruginosa NCDC105 and Micrococcus luteus. Remarkably, EPS400 exhibited the ability to modulate cytokine production, downregulating pro-inflammatory cytokines TNF-α, IL-1β, IL-6, and nitric oxide, while concurrently promoting the release of anti-inflammatory cytokine IL-10 within lipopolysaccharide-activated murine primary macrophages. Additionally, EPS400 significantly (p ≤ 0.05) enhanced the phagocytic potential of macrophages. Collectively, our findings spotlight EPS400 as a promising contender endowed with significant antioxidant, antibacterial, and immunomodulatory attributes. These characteristics propose EPS400 as a potential pharmaceutical or bioactive component, with potential applications in the realm of functional food development.
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Affiliation(s)
- Manorama Kumari
- Technofunctional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India
| | - Basavaprabhu Haranahalli Nataraj
- Dairy Chemistry and Bacteriology Section, Southern Regional Station, ICAR-National Dairy Research Institute, Bengaluru 560030, India
| | - Writdhama G. Prasad
- Dairy Technology Division, ICAR-National Dairy Research Institute, Karnal 132001, India;
| | - Syed Azmal Ali
- Cell Biology and Proteomics Lab, Animal Biotechnology Center, ICAR-National Dairy Research Institute, Karnal 132001, India
- Proteomics of Stem Cells and Cancer, German Cancer Research Center (DKFZ), 69121 Heidelberg, Germany
| | - Pradip V. Behare
- Technofunctional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India
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16
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Zhou Y, Duan L, Zeng Y, Song X, Pan K, Niu L, Pu Y, Li J, Khalique A, Fang J, Jing B, Zeng D, Shen B, Ni X. The panda-derived Lactiplantibacillus plantarum BSG201683 improves LPS-induced intestinal inflammation and epithelial barrier disruption in vitro. BMC Microbiol 2023; 23:249. [PMID: 37674107 PMCID: PMC10481503 DOI: 10.1186/s12866-023-02928-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 07/03/2023] [Indexed: 09/08/2023] Open
Abstract
Captive pandas are suffering from intestinal infection due to intestinal microbiota characterized by a high abundance of Enterobacteriaceae induced by long-term captivity. Probiotic supplements showed improvement in intestinal barrier function and inflammation. However, the effects of panda-derived probiotics on the intestinal epithelium and inflammation have not been elucidated. In the present study, lipopolysaccharide (LPS) impaired Caco-2 and RAW264.7 inflammatory models were applied to assess the protection of Lactiplantibacillus plantarum BSG201683 (L. plantarum G83) on barrier disruption and inflammation. The results showed that treatment with L. plantarum G83 significantly decreased the paracellular permeability to fluorescein isothiocyanate conjugated dextran (MW 4000, FITC-D4) after LPS induction. Meanwhile, L. plantarum G83 alleviated the reduction in tight junction (TJ) proteins and downregulated proinflammatory cytokines caused by LPS in Caco-2 cells. L. plantarum G83 also significantly decreased the expression and secretion of pro-inflammatory cytokines in LPS-induced RAW264.7 cells. In addition, the IL-10 increased in both Caco-2 and RAW264.7 cells after L. plantarum G83 treatment. The phagocytosis activity of RAW264.7 cells was significantly increased after L. plantarum G83 treatment. Toll-like receptor 4/ nuclear factor kappa-B (TLR4/NF-κB) signaling pathways were significantly down-regulated after L. plantarum G83 intervention, and the phosphorylation of NF-κB/p65 was consistent with this result. Our findings suggest that L. plantarum G83 improves intestinal inflammation and epithelial barrier disruption in vitro.
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Affiliation(s)
- Yi Zhou
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
- Department of Urology and Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 611130, Sichuan, China
| | - Ling Duan
- Animal Feed Affairs of Sichuan Province, Sichuan Provincial Department of Agriculture and Rural Affairs, Chengdu, 610041, Sichuan, China
| | - Yan Zeng
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Xu Song
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Kangcheng Pan
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Lili Niu
- Chengdu Wildlife Institute, Chengdu Zoo, Chengdu, 610081, Sichuan, China
| | - Yang Pu
- Chengdu Wildlife Institute, Chengdu Zoo, Chengdu, 610081, Sichuan, China
| | - Jiakun Li
- Department of Urology and Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 611130, Sichuan, China
| | - Abdul Khalique
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Jing Fang
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Bo Jing
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Dong Zeng
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China
| | - Bairong Shen
- Department of Urology and Institutes for Systems Genetics, Frontiers Science Center for Disease-Related Molecular Network, West China Hospital, Sichuan University, Chengdu, 611130, Sichuan, China.
| | - Xueqin Ni
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.
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17
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Zhang J, Xiao Y, Wang H, Zhang H, Chen W, Lu W. Lactic acid bacteria-derived exopolysaccharide: Formation, immunomodulatory ability, health effects, and structure-function relationship. Microbiol Res 2023; 274:127432. [PMID: 37320895 DOI: 10.1016/j.micres.2023.127432] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023]
Abstract
Exopolysaccharides (EPSs) synthesized by lactic acid bacteria (LAB) have implications for host health and act as food ingredients. Due to the variability of LAB-EPS (lactic acid bacteria-derived exopolysaccharide) gene clusters, especially the glycosyltransferase genes that determine monosaccharide composition, the structure of EPS is very rich. EPSs are synthesized by LAB through the extracellular synthesis pathway and the Wzx/Wzy-dependent pathway. LAB-EPS has a strong immunomodulatory ability. The EPSs produced by different genera of LAB, especially Lactobacillus, Leuconostoc, and Streptococcus, have different immunomodulatory abilities because of their specific structures. LAB-EPS possesses other health effects, including antitumor, antioxidant, intestinal barrier repair, antimicrobial, antiviral, and cholesterol-lowering activities. The bioactivities of LAB-EPS are tightly related to their structures such us monosaccharide composition, glycosidic bonds, and molecular weight (MW). For the excellent physicochemical property, LAB-EPS acts as product improvers in dairy, bakery food, and meat in terms of stability, emulsification, thickening, and gelling. We systematically summarize the detailed process of EPS from synthesis to application, with emphasis on physiological mechanisms of EPS, and specific structure-function relationship, which provides theoretical support for the potential commercial value in the pharmaceutical, chemical, food, and cosmetic industries.
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Affiliation(s)
- Jie Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yue Xiao
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongchao Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wei Chen
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wenwei Lu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, Jiangsu 214122, China.
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18
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Yang Y, Jiang G, Tian Y. Biological activities and applications of exopolysaccharides produced by lactic acid bacteria: a mini-review. World J Microbiol Biotechnol 2023; 39:155. [PMID: 37039945 DOI: 10.1007/s11274-023-03610-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/05/2023] [Indexed: 04/12/2023]
Abstract
Exopolysaccharides (EPSs) are naturally occurring high-molecular-weight carbohydrates that have been widely studied for their biological activities, including antioxidant, immunomodulatory, anticancer and gut microbiota regulation activities. Polysaccharides are abundant in nature and can be derived from animals, plants, algae, and microorganisms, but among polysaccharides with potential uses, EPSs from microorganisms have the advantages of a short production cycle, high yield, and independence of production from season and climate and thus have broad prospects. While the safety of the producing microorganism can represent a problem in application of microbial EPSs, lactic acid bacteria (LAB) have been used by humans for thousands of years, and they and their products are generally recognized as safe. This makes LAB excellent sources for exopolysaccharides. EPS-producing LAB are readily found in nature. Through screening of strains, optimization of culture conditions, and improvement of the growth medium, the yield of EPSs from LAB can be increased and the scope of application broadened. This review summarizes EPSs from LAB in terms of structure, function and applications, as well as yield optimization, and introduces recent research on the biological activities and practical applications of LAB EPSs, aiming to provide references for researchers in related areas.
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Affiliation(s)
- Yi Yang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, PR China
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, PR China
| | - Guangyang Jiang
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, PR China
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, PR China
| | - Yongqiang Tian
- College of Biomass Science and Engineering, Sichuan University, Chengdu, 610065, PR China.
- Key Laboratory of Leather Chemistry and Engineering, Sichuan University, Ministry of Education, Chengdu, 610065, PR China.
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19
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Xiong J, Liu DM, Huang YY. Exopolysaccharides from Lactiplantibacillus plantarum: isolation, purification, structure–function relationship, and application. Eur Food Res Technol 2023. [DOI: 10.1007/s00217-023-04237-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
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20
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Yang R, Li J, Jiang C, Shi J. Preventive and therapeutic effects of an exopolysaccharide produced by Lacticaseibacillus rhamnosus on alcoholic gastric ulcers. Int J Biol Macromol 2023; 235:123845. [PMID: 36863673 DOI: 10.1016/j.ijbiomac.2023.123845] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 01/26/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023]
Abstract
Crude exopolysaccharides produced by Lacticaseibacillus rhamnosus SHA113 were previously found to exhibit anti-alcoholic gastric ulcer activity in mice, but their major active fraction, structural characteristics, and underlying mechanisms remain unknown. Here, LRSE1 was identified as the active exopolysaccharide fraction produced by L. rhamnosus SHA113 responsible for the above effects. Purified LRSE1 had a molecular weight of 4.9 × 104 Da and was comprised of L-fucose, D-mannose, D-glucuronic acid, d-glucose, D-galactose, and L-arabinose in the molar ratio of 2.4:6.5:1.2:1.00:0.3:0.6, respectively. The oral administration of LRSE1 resulted in a significant protective and therapeutic effect on alcoholic gastric ulcers in mice. These effects were identified to involve a reduction in reactive oxygen species, apoptosis, and the inflammatory response, increases in antioxidant enzyme activities, and increases in the phylum Firmicutes and decreases in the genera Enterococcus, Enterobacter, and Bacteroides in the gastric mucosa of mice. In vitro experiments showed that the administration of LRSE1 both inhibited apoptosis in GEC-1 cells via the TRPV1-P65-Bcl-2 pathway and inhibited the inflammatory response in RAW264.7 cells via the TRPV1-PI3K pathway. For the first time, we have identified the active exopolysaccharide fraction produced by Lacticaseibacillus that protects against alcoholic gastric ulcers and determined that its effect involves TRPV1-mediated pathways.
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Affiliation(s)
- Rongrong Yang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shanxi Province 710072, China
| | - Junjun Li
- College of Enology, Northwest A&F University, Yangling, Shaanxi, China
| | - Chunmei Jiang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shanxi Province 710072, China
| | - Junling Shi
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, 127 Youyi West Road, Xi'an, Shanxi Province 710072, China.
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21
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Kaur N, Dey P. Bacterial Exopolysaccharides as Emerging Bioactive Macromolecules: From Fundamentals to Applications. Res Microbiol 2022; 174:104024. [PMID: 36587857 DOI: 10.1016/j.resmic.2022.104024] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022]
Abstract
Microbial exopolysaccharides (EPS) are extracellular carbohydrate polymers forming capsules or slimy coating around the cells. EPS can be secreted by various bacterial genera that can help bacterial cells in attachment, environmental adaptation, stress tolerance and are an integral part of microbial biofilms. Several gut commensals (e.g., Lactobacillus, Bifidobacterium) produce EPS that possess diverse bioactivities. Bacterial EPS also has extensive commercial applications in the pharmaceutical and food industries. Owing to the structural and functional diversity, genetic and metabolic engineering strategies are currently employed to increase EPS production. Therefore, the current review provides a comprehensive overview of the fundamentals of bacterial exopolysaccharides, including their classification, source, biosynthetic pathways, and functions in the microbial community. The review also provides an overview of the diverse bioactivities of microbial EPS, including immunomodulatory, anti-diabetic, anti-obesity, and anti-cancer properties. Since several gut microbes are EPS producers and gut microbiota helps maintain a functional gut barrier, emphasis has been given to the intestinal-level bioactivities of the gut microbial EPS. Collectively, the review provides a comprehensive overview of microbial bioactive exopolysaccharides.
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Affiliation(s)
- Navneet Kaur
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, Punjab, India
| | - Priyankar Dey
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, Punjab, India.
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22
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Zhu H, Guo L, Yu D, Du X. New insights into immunomodulatory properties of lactic acid bacteria fermented herbal medicines. Front Microbiol 2022; 13:1073922. [DOI: 10.3389/fmicb.2022.1073922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 11/10/2022] [Indexed: 11/29/2022] Open
Abstract
The COVID-19 pandemic has brought more attention to the immune system, the body’s defense against infectious diseases. The immunomodulatory ability of traditional herbal medicine has been confirmed through clinical trial research, and has obvious advantages over prescription drugs due to its high number of potential targets and low toxicity. The active compounds of herbal drugs primarily include polysaccharides, saponins, flavonoids, and phenolics and can be modified to produce new active compounds after lactic acid bacteria (LAB) fermentation. LAB, primary source of probiotics, can produce additional immunomodulatory metabolites such as exopolysaccharides, short-chain fatty acids, and bacteriocins. Moreover, several compounds from herbal medicines can promote the growth and production of LAB-based immune active metabolites. Thus, LAB-mediated fermentation of herbal medicines has become a novel strategy for regulating human immune responses. The current review discusses the immunomodulatory properties and active compounds of LAB fermented herbal drugs, the interaction between LAB and herbal medicines, and changes in immunoregulatory components that occur during fermentation. This study also discusses the mechanisms by which LAB-fermented herbal medicines regulate the immune response, including activation of the innate or adaptive immune system and the maintenance of intestinal immune homeostasis.
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23
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Yi C, Wu Y, Wang ZG, Wang KM, Zhang ZK, Wang B, Luo HY. Evaluation of the Anti-Inflammatory Activity of Enzymatic Hydrolysis Peptide SEP-3 from Skipjack ( Katsuwonus pelamis) Based on NF-κB and MAPK Pathways. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2022. [DOI: 10.1080/10498850.2022.2133582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Chong Yi
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Yue Wu
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Zhi-gao Wang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Kun-mei Wang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Ze-kun Zhang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Bin Wang
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
| | - Hong-yu Luo
- Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province, College of Food Science and Pharmacy, Zhejiang Ocean University, Zhoushan, China
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24
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The Purification and Biochemical Characterization of a Weissella cibaria F1 Derived β-Mannanase for Its Use in the Preparation of Konjac Oligo-Glucomannan with Immunomodulatory Properties. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8090468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mannanase with a molecular weight of 33.1 kDa was purified from Weissella cibaria F1. The F1 mannanase contained 289 amino acid residues and shared 70.0% similarity with mannanase from Bacillus subtilis (P55278 (MANB_BACIU)). The optimum reaction conditions of F1 mannanase were 50 °C and pH 6.5. After incubation at pH 4.5–8.0 and 30–60 °C for 2 h, the enzyme activity remained above 60%. The effects of metal ions on mannanase enzyme activity were measured, and Mn2+, Mg2+, and Cu2+ increased enzyme activity. The Km (16.96 ± 0.01 μmol·mL−1) and Vmax (1119.05 ± 0.14 μmol·min−1) values showed that the enzyme exhibited high affinity for locust bean gum. Mannanase was used to hydrolyze konjac glucomannan to produce konjac oligo-glucomannan (KOGM). KOGM increased the proliferation and phagocytosis of RAW264.7 macrophages and enhanced nitric oxide, and cytokine production in macrophages, which showed potent immunostimulatory activity. In this study, the advantages of mannanase derived from lactic acid bacteria were utilized to expand the application of KOGM in the medical field, which is helpful to explore the broad prospects of KOGM in functional food or medicine.
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25
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Zheng Z, Huang Q. New insight into the structure-dependent two-way immunomodulatory effects of water-soluble yeast β-glucan in macrophages. Carbohydr Polym 2022; 291:119569. [DOI: 10.1016/j.carbpol.2022.119569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/28/2022] [Accepted: 05/01/2022] [Indexed: 12/15/2022]
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26
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Fucose-containing Abroma augusta mucilage hydrogel as a potential probiotic carrier with prebiotic function. Food Chem 2022; 387:132941. [DOI: 10.1016/j.foodchem.2022.132941] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 02/28/2022] [Accepted: 04/07/2022] [Indexed: 11/22/2022]
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27
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Li J, Feng S, Yu L, Zhao J, Tian F, Chen W, Zhai Q. Capsular polysaccarides of probiotics and their immunomodulatory roles. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Srivastava U, Nataraj BH, Kumari M, Kadyan S, Puniya AK, Behare PV, Nagpal R. Antioxidant and immunomodulatory potency of Lacticaseibacillus rhamnosus NCDC24 fermented milk-derived peptides: A computationally guided in-vitro and ex-vivo investigation. Peptides 2022; 155:170843. [PMID: 35878657 DOI: 10.1016/j.peptides.2022.170843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 07/10/2022] [Accepted: 07/19/2022] [Indexed: 10/17/2022]
Abstract
Infections of microbial and non-microbial origins have been associated with significant immunological manifestations, thereby underscoring the need for a thorough understanding and investigation of novel immunomodulatory and antioxidant molecules that could prevent these incidences. To this end, we herein aim to identify fermented milk peptides with antioxidant and immunomodulatory properties that could be exploited for specific future applications. Our computational prediction models indicate that these peptides are non-toxic and possess considerable hydrophobicity (19.82-38.96 %) and functionality. Further analyses reveal that two of the four peptides, i.e., Pep 1 (AGWNIPM) and Pep 4 (YLGYLEQLLR), possess higher in-vitro antioxidant activity. The immunomodulatory potential of these two peptides (Pep 1 and Pep 4) is further demonstrated by using a combination of molecular simulation trajectory and ex-vivo approaches. Both peptides demonstrate ability to control the production of pro- inflammatory (TNF-α, IL-1, and IL-6) and anti-inflammatory (IL-10) cytokines as well as nitric oxide release in LPS-stimulated murine peritoneal macrophages. Similarly, peptide interferences also lead to significant (P < 0.05) improvement in macrophage phagocytic capacity. Taken together, these findings highlight the antioxidant and immunomodulatory properties of fermented milk peptides (Pep 1 and Pep 4) within the cellular environment and should facilitate prospective studies exploring such bioactive peptides and related functional molecules mediating the benefits of fermented milk products on human health.
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Affiliation(s)
- Umang Srivastava
- Techno-functional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India
| | - Basavaprabhu H Nataraj
- Techno-functional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India
| | - Manorama Kumari
- Techno-functional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India
| | - Saurabh Kadyan
- Techno-functional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India; Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL 32306, USA
| | - Anil K Puniya
- Anaerobic Microbiology Lab, Dairy Microbiology Division, National Dairy Research Institute, Karnal 132001, India
| | - Pradip V Behare
- Techno-functional Starters Lab, National Collection of Dairy Cultures (NCDC), Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal 132001, India.
| | - Ravinder Nagpal
- Department of Nutrition and Integrative Physiology, Florida State University, Tallahassee, FL 32306, USA.
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29
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Xia Y, Kuda T, Nakamura S, Yamamoto M, Takahashi H, Kimura B. Effects of soy protein and β-conglycinin on microbiota and in vitro antioxidant and immunomodulatory capacities of human faecal cultures. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.107516] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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30
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Cong L, Xie X, Liu S, Xiang L, Fu X. Genistein promotes M1 macrophage apoptosis and reduces inflammatory response by disrupting miR-21/TIPE2 pathway. Saudi Pharm J 2022; 30:934-945. [PMID: 35903524 PMCID: PMC9315303 DOI: 10.1016/j.jsps.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/20/2022] [Indexed: 11/29/2022] Open
Abstract
Cardiovascular diseases are a major cause of mortality, and vascular injury, a common pathological basis of cardiovascular disease, is deeply correlated with macrophage apoptosis and inflammatory response. Genistein, a type of phytoestrogen, exerts cardiovascular protective activities, but the underlying mechanism has not been fully elucidated. In this study, RAW264.7 cells were treated with genistein, lipopolysaccharide (LPS), nuclear factor-kappa B (NF-κB) inhibitor, and/or protein kinase B (AKT) agonist to determine the role of genistein in apoptosis and inflammation in LPS-stimulated cells. Simultaneously, high fat diet-fed C57BL/6 mice were administered genistein to evaluate the function of genistein on LPS-induced cardiovascular injury mouse model. Here, we demonstrated that LPS obviously increased apoptosis resistance and inflammatory response of macrophages by promoting miR-21 expression, and miR-21 downregulated tumor necrosis factor-α-induced protein 8-like 2 (TIPE2) expression by targeting the coding region. Genistein reduced miR-21 expression by inhibiting NF-κB, then blocked toll-like receptor 4 (TLR4) pathway and AKT phosphorylation dependent on TIPE2, resulting in inhibition of LPS. Our research suggests that miR-21/TIPE2 pathway is involved in M1 macrophage apoptosis and inflammatory response, and genistein inhibits the progression of LPS-induced cardiovascular injury at the epigenetic level via regulating the promoter region of Vmp1 by NF-κB.
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Affiliation(s)
- Li Cong
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, Changsha 410013, China
- School of Medicine, Hunan Normal University, Changsha 410013, China
- Corresponding authors at: School of Medicine, Hunan Normal University, Changsha 410013, China.
| | - Xiaolin Xie
- School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Sujuan Liu
- School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Liping Xiang
- School of Medicine, Hunan Normal University, Changsha 410013, China
| | - Xiaohua Fu
- School of Medicine, Hunan Normal University, Changsha 410013, China
- Corresponding authors at: School of Medicine, Hunan Normal University, Changsha 410013, China.
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31
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Xiao M, Ren X, Yu Y, Gao W, Zhu C, Sun H, Kong Q, Fu X, Mou H. Fucose-containing bacterial exopolysaccharides: Sources, biological activities, and food applications. Food Chem X 2022; 13:100233. [PMID: 35498987 PMCID: PMC9039932 DOI: 10.1016/j.fochx.2022.100233] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/22/2022] [Accepted: 01/24/2022] [Indexed: 12/15/2022] Open
Abstract
Bacterial exopolysaccharides are high molecular weight polysaccharides that are secreted by a wide range of bacteria, with diverse structures and easy preparation. Fucose, fucose-containing oligosaccharides (FCOs), and fucose-containing polysaccharides (FCPs) have important applications in the food and medicine fields, including applications in products for removing Helicobacter pylori and infant formula powder. Fucose-containing bacterial exopolysaccharide (FcEPS) is a prospective source of fucose, FCOs, and FCPs. This review systematically summarizes the common sources and applications of FCPs and FCOs and the bacterial strains capable of producing FcEPS reported in recent years. The repeated-unit structures, synthesis pathways, and factors affecting the production of FcEPS are reviewed, as well as the degradation methods of FcEPS for preparing FCOs. Finally, the bioactivities of FcEPS, including anti-oxidant, prebiotic, anti-cancer, anti-inflammatory, anti-viral, and anti-microbial activities, are discussed and may serve as a reference strategy for further applications of FcEPS in the functional food and medicine industries.
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Key Words
- 2′-FL, 2′-fucosyllactose
- 3-FL, 3-fucosyllactose
- ABTS, 2,2′-azinobis-3-ethylbenzothiazoline-6-sulphonate
- Bacterial exopolysaccharides
- Bioactivity
- DPPH, 2,2-diphenyl-1-picrylhydrazyl
- EPS, exopolysaccharides
- FCOs, fucose-containing oligosaccharides
- FCPs, fucose-containing polysaccharides
- FcEPS, fucose-containing EPS
- Food application
- Fucose
- HMOs, human milk oligosaccharides
- MAPK, mitogen-activated protein kinase
- PBMCs, peripheral blood mononuclear cells
- ROS, reactive oxygen species
- SCFAs, short-chain fatty acids
- Structure
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Affiliation(s)
- Mengshi Xiao
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Xinmiao Ren
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Ying Yu
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Wei Gao
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Han Sun
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Qing Kong
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
| | - Xiaodan Fu
- State Key Laboratory of Food Science and Technology, China-Canada Joint Laboratory of Food Science and Technology (Nanchang), Key Laboratory of Bioactive Polysaccharides of Jiangxi Province, Nanchang University, No. 235 Nanjing East Road, Nanchang 330047, Jiangxi Province, People's Republic of China
- Corresponding authors.
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, Shandong Province, People's Republic of China
- Corresponding authors.
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Lu J, Zhu B, Zhou F, Ding X, Qian C, Ding Z, Ye X. Polysaccharides From the Aerial Parts of Tetrastigma Hemsleyanum Diels et Gilg Induce Bidirectional Immunity and Ameliorate LPS-Induced Acute Respiratory Distress Syndrome in Mice. Front Pharmacol 2022; 13:838873. [PMID: 35370633 PMCID: PMC8965720 DOI: 10.3389/fphar.2022.838873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Tetrastigma hemsleyanum Diels et Gilg (Sanyeqing, SYQ) has traditionally been used to treat inflammation, high fever and improve immune function of patients. Polysaccharides have been proved to be one of the important components of SYQ. Previous studies have confirmed the antipyretic and antitumor effects of polysaccharides from SYQ (SYQP), and clarified that SYQP could enhance immunity through TLR4 signalling pathway. However, there were more possibilities for the mechanism by which SYQP exerted immunomodulatory effects and the role of SYQP in acute respiratory distress syndrome (ARDS) is elusive. The purpose of this study was further to explain the bidirectional modulation of immunity mechanism of SYQP in vitro and its effect in LPS-induced ARDS in vivo. Experimental results showed that SYQP significantly stimulated gene expressions of TLR1, TLR2 and TLR6 and secretion of cytokines in RAW264.7 cells. Individual or combined application of TLR2 antagonist C29 and TLR4 antagonist TAK-242 could reduce SYQP-mediated stimulation of cytokine secretion in RAW264.7 cells and mouse peritoneal macrophages (MPMs) to varying degrees. On the other hand, SYQP markedly inhibited the expression levels of inflammatory cytokines, NO, iNOS and COX-2 in LPS-treatment RAW264.7 cells. Moreover, in vivo results indicated that SYQP significantly reduced LPS-induced damage in ARDS mice through alleviating LPS-induced pulmonary morphological damage, inhibiting myeloperoxidase (MPO) expression levels, ameliorating the inflammatory cells in bronchoalveolar lavage fluid (BALF) and improving hematological status. Meanwhile, SYQP evidently reduced IL-6, TNF-α and IFN-γ secretion, the overexpression levels of TLR2 and TLR4, as well as the phosphorylation of NF-κB p65. In addition, SYQP reduced the phosphorylation of JAK2 and STAT1 and the overexpression of NLRP3, caspase-1, caspase-3 and caspase-8 in lung tissues of ARDS mice. In summary, our study confirmed that SYQP induced bidirectional immunity and ameliorated LPS-induced acute respiratory distress syndrome in mice through TLR2/TLR4-NF-κB, NLRP3/caspase and JAK/STAT signaling pathways, which provided a theoretical basis for further use of SYQP.
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Affiliation(s)
- Jingjing Lu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Bingqi Zhu
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fangmei Zhou
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xinghong Ding
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chaodong Qian
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhishan Ding
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
- *Correspondence: Zhishan Ding, ; Xiaoqing Ye,
| | - Xiaoqing Ye
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical University, Hangzhou, China
- *Correspondence: Zhishan Ding, ; Xiaoqing Ye,
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33
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Dedhia N, Marathe SJ, Singhal RS. Food polysaccharides: A review on emerging microbial sources, bioactivities, nanoformulations and safety considerations. Carbohydr Polym 2022; 287:119355. [DOI: 10.1016/j.carbpol.2022.119355] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 03/10/2022] [Accepted: 03/10/2022] [Indexed: 12/13/2022]
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Wu J, Han X, Ye M, Li Y, Wang X, Zhong Q. Exopolysaccharides synthesized by lactic acid bacteria: biosynthesis pathway, structure-function relationship, structural modification and applicability. Crit Rev Food Sci Nutr 2022; 63:7043-7064. [PMID: 35213280 DOI: 10.1080/10408398.2022.2043822] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Probiotics and their fermentation products are increasingly been focused on due to their health-boosting effects. Exopolysaccharides (EPS) synthetized by lactic acid bacteria (LAB) are widely applied as texture modifiers in dairy, meat and bakery products owning to their improved properties. Moreover, LAB-derived EPS have been confirmed to possess diverse physiological bioactivities including antioxidant, anti-biofilm, antiviral, immune-regulatory or antitumor. However, the low production and high acquisition cost hinder their development. Even though LAB-derived EPS have been extensively studied for their production-improving, there are only few reports on the systematic elucidation and summary of the relationship among biosynthesis pathway, strain selection, production parameter, structure-function relationship. Therefore, a detailed summary on biosynthesis pathway, production parameter and structure-function relationship of LAB-derived EPS is provided in this review, the structural modifications together with the current and potential applications are also discussed in this paper.
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Affiliation(s)
- Jinsong Wu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
- Department of Science, Henan University of Animal Husbandry and Economy, Henan, Zhengzhou, China
| | - Xiangpeng Han
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Meizhi Ye
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Yao Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
| | - Xi Wang
- Department of Science, Henan University of Animal Husbandry and Economy, Henan, Zhengzhou, China
| | - Qingping Zhong
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, China
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35
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Wang J, Li M, Gao Y, Li H, Fang L, Liu C, Liu X, Min W. Effects of Exopolysaccharides from Lactiplantibacillus plantarum JLAU103 on Intestinal Immune Response, Oxidative Stress, and Microbial Communities in Cyclophosphamide-Induced Immunosuppressed Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:2197-2210. [PMID: 35118857 DOI: 10.1021/acs.jafc.1c06502] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study investigated the effects of the exopolysaccharide from Lactiplantibacillus plantarum JLAU103 (EPS103) on the intestinal immune response, oxidative stress, intestinal mucosal barrier, and microbial community in cyclophosphamide-induced immune-suppressed mice. The results showed that EPS103 promoted the secretion of cytokines and the generation of secretory immunoglobulin A and mucin-2 in the small intestine of mice, which might be related to the activation of the MAPK pathway. Additionally, EPS103 protected against oxidative stress by activating antioxidation enzymes and Nrf2/Keap1 pathways. It also improved the intestinal physical barrier functions via regulating the ratio of villous height to crypt depth and upregulating the expression of tight-junction proteins. Meanwhile, EPS103 promoted the generation of short-chain fatty acids (SCFAs) and modulated the constituents of gut microbiota. These results suggested that EPS103 may modulate the intestinal immunoresponse relying on the regulation of SCFA production and gut microbiota in immunosuppressed mice, resulting in the activation of systemic immunity.
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Affiliation(s)
- Ji Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Meihe Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Yawen Gao
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Hongmei Li
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Li Fang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Chunlei Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Xiaoting Liu
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
| | - Weihong Min
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, Jilin, P. R. China
- National Engineering Laboratory of Wheat and Corn Deep Processing, Changchun 130118, Jilin, P. R. China
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Ultrasonic-Assisted Extraction of Codonopsis pilosula Glucofructan: Optimization, Structure, and Immunoregulatory Activity. Nutrients 2022; 14:nu14050927. [PMID: 35267905 PMCID: PMC8912531 DOI: 10.3390/nu14050927] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 02/13/2022] [Accepted: 02/18/2022] [Indexed: 01/27/2023] Open
Abstract
In recent years, multiple edible polysaccharides from Codonopsis pilosula were mainly isolated with high average molecular weights and exhibited various bioactivities, but it was proven that low-molecular-weight polysaccharides could exert stronger activities due to the superior water solubility and permeability. In the present study, the water-soluble polysaccharide C. pilosula with low molecular weight was isolated under ultrasonic assistance at 30 °C, the extraction process was optimized via response surface method (RSM), and the structure and immunoregulatory activity were further investigated. The maximum yield (4.86%) for crude polysaccharides (cCPPs) was obtained under following parameters: ultrasonic power of 370 W, liquid/material ratio of 33 mL/g, ultrasonic time of 81 min. Subsequently, the cCPPs were further purified through dialysis and Sephadex G-25 column to acquire purified polysaccharide (CPPs). Structural analysis indicated that CPPs was a glucofructan (average molecular weight of 4.23 × 103 Da) with (2→1)-β-D-Fruf and (1→)-α-D-Glcp as the backbone branched by (2→6)-β-D-Fruf. Additionally, CPPs could enhance immunoregulatory function by stimulating NO production and cytokine (IL-6 and TNF-α) secretion of RAW264.7 macrophages dose-dependently, which presented no cytotoxic effects. These data suggest that CPPs have the potential to be used as a nutritional dietary compound and natural immunostimulant supplement in the food industry.
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Immunomodulatory Activity of Extracellular Vesicles of Kimchi-Derived Lactic Acid Bacteria ( Leuconostoc mesenteroides, Latilactobacillus curvatus, and Lactiplantibacillus plantarum). Foods 2022; 11:foods11030313. [PMID: 35159463 PMCID: PMC8834128 DOI: 10.3390/foods11030313] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 01/21/2022] [Accepted: 01/21/2022] [Indexed: 12/12/2022] Open
Abstract
Lactic acid bacteria present in Kimchi, such as Leuconostoc mesenteroides (Lm), Latilactobacillus curvatus (Lc), and Lactiplantibacillus plantarum (Lp) produce extracellular vesicles (ECVs) that modulate immune responses. The ECVs of probiotic Kimchi bacteria are abbreviated as LmV, LcV, and LpV. Treatment of macrophages (RAW264.7) with ECVs (LmV, LcV, and LpV) increased the production of nitric oxide (NO), tumor necrosis factor (TNF)-α, and interleukin-6 (IL-6). Immunostimulatory effects exerted on the RAW264.7 cells were stronger after treatments with LmV and LcV than with LpV. Treatment of mice with LcV (1 mg/kg, orally) induced splenocyte proliferation and subsequent production of both NO and cytokines (INF-γ, TNF-α, IL-4, and IL-10). Furthermore, pre-treatment of macrophages and microglial cells with ECVs prior to LPS stimulation significantly attenuated the production of NO and pro-inflammatory cytokines (TNF-α, IL-1β, and IL-6). Therefore, ECVs (LmV, LcV, and LpV) prevent inflammatory responses in the LPS-stimulated microglial cells by blocking the extracellular signal-regulated kinase (Erk) and p38 signaling pathways. These results showed that LmV, LcV, and LpV from Kimchi probiotic bacteria safely exert immunomodulatory effects.
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In vitro antioxidant and immunomodulation capacities of low-molecular weight-alginate- and laminaran-responsible gut indigenous bacteria. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.112127] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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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.
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Mu Z, Yang Y, Xia Y, Wang F, Sun Y, Yang Y, Ai L. Probiotic yeast BR14 ameliorates DSS-induced colitis by restoring the gut barrier and adjusting the intestinal microbiota. Food Funct 2021; 12:8386-8398. [PMID: 34355721 DOI: 10.1039/d1fo01314a] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The probiotic Saccharomyces boulardii has been widely used in colitis treatment; however, the beneficial effects of other yeast species are rarely studied. Saccharomyces cerevisiae with great stress tolerance and potential in colitis treatment was investigated in this study. Among 16 yeast strains, BR14, BR54, and BR174 strains showed good stress-resistant capacity, anti-inflammatory activity, and little toxicity to macrophages. As for the colitis mice, BR14 inhibited weight loss the most, as well as the disease activity index and colon shortening. After treatment with BR14, the expression levels of genes related to histological damage were all upregulated. BR14 significantly attenuated the expression levels of TNF-α and IL-6, while the expression of IL-10 was upregulated. Additionally, BR14 rebalanced the intestinal microbial composition of colitis mice by increasing the abundance of Muribaculaceae, Lactobacillus and Rikenellaceae and decreasing the abundance of Turicibacter, Escherichia-Shigella, Desulfovibrio, and Lachnospiraceae. In summary, BR14 exhibited great potential in alleviating colitis through restoring the gut barrier and adjusting the intestinal microbiota.
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Affiliation(s)
- Zhiyong Mu
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.
| | - Yijin Yang
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China. and School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China
| | - Yongjun Xia
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.
| | - Fukang Wang
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.
| | - Yiwei Sun
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.
| | - Ying Yang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, PR China
| | - Lianzhong Ai
- Shanghai Engineering Research Center of Food Microbiology, School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, PR China.
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Sirin S, Aslim B. Protective effect of exopolysaccharides from lactic acid bacteria against amyloid beta1-42induced oxidative stress in SH-SY5Y cells: Involvement of the AKT, MAPK, and NF-κB signaling pathway. Process Biochem 2021. [DOI: 10.1016/j.procbio.2021.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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42
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Potential of probiotics for use as functional foods in patients with non-infectious gastric ulcer. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.02.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Yu L, Yu Y, Yin R, Duan H, Qu D, Tian F, Narbad A, Chen W, Zhai Q. Dose-dependent effects of lead induced gut injuries: An in vitro and in vivo study. CHEMOSPHERE 2021; 266:129130. [PMID: 33310514 DOI: 10.1016/j.chemosphere.2020.129130] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Lead (Pb) toxicity has been widely studied, but its dose-dependent toxic effects on the gut remain unclear, therefore, the aim of this study was to evaluate the effects of different doses of Pb exposure on the gut microbiota and gut barrier in vitro and in vivo. The HT-29 cell model was used to determine the Pb-induced effects on cell viability, reactive oxygen species (ROS), and tight junction proteins (TJPs) in vitro, and C57BL/6 mice models exposed to 0, 20, 100, 500, and 1000 mg/kg Pb were used to investigate the Pb-induced dose-dependent effects on the gut microbiota, TJP expression, and colon histopathology. Our results showed that the exposure of HT-29 cells to 8 mM Pb decreased cell viability by 50%, elevated ROS levels by 200%, and suppressed the expression of the TJPs, zonula occludens-1 (ZO-1) and occludin by 23% and 35%, respectively. Consistently, Pb-exposed mice showed significant increases in colon tissue damage and inflammation and reductions in ZO-1 mRNA levels in a dose-dependent manner. The occludin mRNA levels decreased in the 500 and 1000 mg/kg groups. At the genus level, the relative abundance of Coprococcus and Oscillospira decreased and that of Lactobacillus increased in linear manner with the Pb exposure dose. PICRUSt analysis based on 16S rRNA sequencing revealed Pb dose-dependent alterations in metabolism through the gut microbiota. These findings suggest that Pb exposure can not only disrupt the barrier by generating oxidative stress, but can also induce gut dysbiosis, colon tissue damage, and gut inflammation in a dose-dependent manner.
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Affiliation(s)
- Leilei Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China
| | - Yaqi Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Ruijie Yin
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Hui Duan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Dingwu Qu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Fengwei Tian
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China; (Yangzhou) Institute of Food Biotechnology, Jiangnan University, Yangzhou, 225004, China
| | - Arjan Narbad
- International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China; Gut Health and Microbiome Institute Strategic Programme, Quadram Institute Bioscience, Norwich, 16 NR4 7UQ, UK
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi, 214122, China; Beijing Innovation Centre of Food Nutrition and Human Health, Beijing Technology & Business University, Beijing, 100048, PR China
| | - Qixiao Zhai
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi, 214122, China; International Joint Research Laboratory for Probiotics at Jiangnan University, Wuxi, 214122 China.
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Spangler JR, Caruana JC, Medintz IL, Walper SA. Harnessing the potential of Lactobacillus species for therapeutic delivery at the lumenal-mucosal interface. Future Sci OA 2021; 7:FSO671. [PMID: 33815818 PMCID: PMC8015674 DOI: 10.2144/fsoa-2020-0153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Lactobacillus species have been studied for over 30 years in their role as commensal organisms in the human gut. Recently there has been a surge of interest in their abilities to natively and recombinantly stimulate immune activities, and studies have identified strains and novel molecules that convey particular advantages for applications as both immune adjuvants and immunomodulators. In this review, we discuss the recent advances in Lactobacillus-related activity at the gut/microbiota interface, the efforts to probe the boundaries of the direct and indirect therapeutic potential of these bacteria, and highlight the continued interest in harnessing the native capacity for the production of biogenic compounds shown to influence nervous system activity. Taken together, these aspects underscore Lactobacillus species as versatile therapeutic delivery vehicles capable of effector production at the lumenal-mucosal interface, and further establish a foundation of efficacy upon which future engineered strains can expand.
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Affiliation(s)
- Joseph R Spangler
- National Research Council Postdoctoral Fellow sited in US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
| | - Julie C Caruana
- American Society for Engineering Education Postdoctoral Fellow sited in US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
| | - Igor L Medintz
- US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
| | - Scott A Walper
- US Naval Research Laboratory, Code 6900, Center for Bio/Molecular Science & Engineering, 4555 Overlook Ave SW, Washington DC, 20375, USA
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Characterization and chemical modification of PLN-1, an exopolysaccharide from Phomopsis liquidambari NJUSTb1. Carbohydr Polym 2021; 253:117197. [DOI: 10.1016/j.carbpol.2020.117197] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 09/16/2020] [Accepted: 10/03/2020] [Indexed: 12/13/2022]
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Xu X, Qiao Y, Peng Q, Shi B, Dia VP. Antioxidant and Immunomodulatory Properties of Partially purified Exopolysaccharide from Lactobacillus Casei Isolated from Chinese Northeast Sauerkraut. Immunol Invest 2021; 51:748-765. [PMID: 33416001 DOI: 10.1080/08820139.2020.1869777] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background: Exopolysaccharides (EPS) from Lactobacillus spp. have been found to have biological activities. Our previous work demonstrated the antibiofilm activity of EPS from Lactobacillus casei NA-2 (L.casei NA-2) isolated from northeast Chinese sauerkraut (Suan Cai). The present study has focussed on the antioxidant and immunomodulatory activities of the EPS in vitro.Methods: Antioxidant properties of the EPS were evaluated by the radical-scavenging activities in vitro. The immunomodulatory effects of EPS were assayed by measuring nitric oxide (NO), interleukin 6 (IL-6), tumor necrosis factor-alpha (TNF-α), and reactive oxygen species (ROS) in RAW 264.7 macrophages, and the mechanism was investigated through NF-κB and JNK.Result: EPS contains 88% total sugar, with the molecular weights (Mw) of 1.3 × 106 Da, 6.4 × 105 Da, 2.0 × 105 Da, and 1.4 × 104 Da. EPS showed antioxidant activity by scavenging hydroxyl radicals (42% at 1.2 mg/mL), superoxide radicals (76% at 100 µg/mL), and DPPH (80% at 10 mg/mL); and did not affect the proliferation of unstimulated or lipopolysaccharide (LPS)-induced RAW 264.7 cells at the concentrations ranging from 31.25 to 500 µg/mL. Results showed EPS promoted the production of ROS and TNF-α involved in NF-κB p65 and JNK signaling pathways in unstimulated RAW 264.7 cells. On the other hand, the levels of NO and iNOS were reduced after EPS treatment in LPS-induced RAW 264.7 cells.Conclusion: Our results showed the protective effect against oxidative damage and potential immunomodulatory and anti-inflammatory properties of EPS from Lactobacillus casei NA-2.
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Affiliation(s)
- Xiaoqing Xu
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China.,Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, Tennessee, USA
| | - Yu Qiao
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qing Peng
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bo Shi
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Vermont P Dia
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, Tennessee, USA
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Angelin J, Kavitha M. Exopolysaccharides from probiotic bacteria and their health potential. Int J Biol Macromol 2020; 162:853-865. [PMID: 32585269 PMCID: PMC7308007 DOI: 10.1016/j.ijbiomac.2020.06.190] [Citation(s) in RCA: 218] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 01/06/2023]
Abstract
Exopolysaccharides (EPS) are extracellular macromolecules excreted as tightly bound capsule or loosely attached slime layer in microorganisms. They play most prominent role against desiccation, phagocytosis, cell recognition, phage attack, antibiotics or toxic compounds and osmotic stress. In the last few decades, natural polymers have gained much attention among scientific communities owing to their therapeutic potential. In particular the EPS retrieved from probiotic bacteria with varied carbohydrate compositions possess a plenty of beneficial properties. Different probiotic microbes have unique behavior in expressing their capability to display significant health promoting characteristics in the form of polysaccharides. In this new era of alternative medicines, these polysaccharides are considered as substitutes for synthetic drugs. The EPS finds applications in various fields like textiles, cosmetics, bioremediation, food and therapeutics. The present review is focused on sources, chemical composition, biosynthetic pathways of EPS and their biological potential. More attention has been given to the scientific investigations on antimicrobial, antitumor, anti-biofilm, antiviral, anti-inflammatory and immunomodulatory activities.
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Affiliation(s)
- J Angelin
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
| | - M Kavitha
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
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Wu J, Zhang Y, Ye L, Wang C. The anti-cancer effects and mechanisms of lactic acid bacteria exopolysaccharides in vitro: A review. Carbohydr Polym 2020; 253:117308. [PMID: 33278957 DOI: 10.1016/j.carbpol.2020.117308] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/27/2020] [Accepted: 10/20/2020] [Indexed: 02/05/2023]
Abstract
Probiotic lactic acid bacteria (LAB) are a particular group of gram-positive bacteria that are usually involved in natural ferments and widely used in food manufacture industry. Most of them can produce exopolysaccharides (EPS), surface carbohydrate polymers with diverse biological functions. LAB EPS are potentially complementary and alternative medicines against cancer. EPS show anti-proliferative effects on a variety of tumor cells from intestine, liver, breast, etc. They modulate the development of tumors through various mechanisms including promoting apoptosis, inducing cell cycle arrest as well as anti-mutagenic, anti-oxidative, anti-angiogenesis and anti-inflammatory effects. Bacterial origin, existence form, chemical structure, purity et al. are important factors affecting the anticancer effects of EPS. The future challenge lies in elucidating the precise structure-function relationship of LAB EPS. Besides, more in vivo studies and further clinical trials are indispensable to confirm the anticancer effects.
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Affiliation(s)
- Jiayi Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Endodontics Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
| | - Yuheng Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Endodontics Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
| | - Ling Ye
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Endodontics Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
| | - Chenglin Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Dept. of Endodontics Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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Yılmaz T, Şimşek Ö. Potential Health Benefits of Ropy Exopolysaccharides Produced by Lactobacillus plantarum. Molecules 2020; 25:molecules25143293. [PMID: 32698491 PMCID: PMC7396996 DOI: 10.3390/molecules25143293] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/10/2020] [Accepted: 07/15/2020] [Indexed: 01/31/2023] Open
Abstract
The ability of Lactobacillus plantarum to produce exopolysaccharides (EPS) of various structures and properties is effective in showing both starter and probiotic culture qualification. In this study, the potential health promoting functions of the ropy EPS produced by Lactobacillus plantarum strains isolated from tarhana were tested. A stimulation of the pro-inflammatory IL-12 and TNF-α cytokines was observed in the presence of the ropy EPS suggesting an in vitro immune modulation. Similarly, the tested EPS demonstrated promoted the growth of the probiotic strains in fermentation medium. A medium level of radical scavenging activities of ropy EPS was observed whereas the superoxide and hydroxyl scavenging activities were more effective. The ropy EPS also showed α-glucosidase inhibition and cholesterol removal characteristics depending on their concentration. These findings revealed the potential health-promoting functions of ropy EPS from L. plantarum strains and EPS from L. plantarum PFC311 and PFC310 strains demonstrated multiple health-improving effects that can be further evaluated in food and other industries.
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