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Zhou L, Zhang R, Jiang B, Meng Q, Chen J, Liu X. Efficient Production of an Alginate Lyase in Bacillus subtilis with Combined Strategy: Vector and Host Selection, Promoter and Signal Peptide Screening, and Modification of a Translation Initiation Region. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:19403-19412. [PMID: 39180506 DOI: 10.1021/acs.jafc.4c03532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/26/2024]
Abstract
Alginate lyases (ALys) whose degrading products, alginate oligosaccharides, exhibit various outstanding biochemical activities have aroused increasing interest of researchers in the marine bioresource field. However, their predominant sourcing from marine bacteria, with limited yields and unclear genetic backgrounds, presents a challenge for industrial production. In this study, ALys (Aly01) from Vibrio natriegens SK 42.001 was expressed in Bacillus subtilis (B. subtilis), a nonpathogenic microorganism recognized as generally safe (GRAS). This accomplishment was realized through a comprehensive strategy involving vector and host selection, promoter and signal peptide screening, and engineering of the ribosome binding site (RBS) and the N-terminal coding sequence (NCS). The optimal combination was identified as the pP43NMK and B. subtilis WB600. Among the 19 reported strong promoters, PnprE exhibited the best performance, showing intracellular enzyme activities of 4.47 U/mL. Despite expectations, dual promoter construction did not yield a significant increase. Further, SPydhT demonstrated the highest extracellular activity (1.33 U/mL), which was further improved by RBS/NCS engineering, reaching 4.58 U/mL. Finally, after fed-batch fermentation, the extracellular activity reached 18.01 U/mL, which was the highest of ALys with a high molecular weight expressed in B. subtilis. These findings are expected to offer valuable insights into the heterologous expression of ALys in B. subtilis.
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Affiliation(s)
- Licheng Zhou
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Ran Zhang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Bo Jiang
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Qing Meng
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jingjing Chen
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xiaoyong Liu
- Shandong Haizhibao Ocean Technology Co., Ltd., Weihai 264333, China
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Ai X, Niu Q, Li S, Liu C, Wu N, Yu G, Li G. Eco-friendly ozonation of alginate: Physicochemical characterization and degradation mechanism exploration through mass spectrometry. Int J Biol Macromol 2024; 279:135306. [PMID: 39236949 DOI: 10.1016/j.ijbiomac.2024.135306] [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: 07/01/2024] [Revised: 08/15/2024] [Accepted: 09/02/2024] [Indexed: 09/07/2024]
Abstract
The ozone degradation has been proven to be an effective degradation method for alginate, while the degradation mechanism remained to be unconfirmed. In this study, two high-molecular-weight alginates with different mannuronic/guluronic (G/M) ratios, HM and HG (G/M 0.49 vs 1.40), were depolymerized using established ozonation technology. Notably, HM can be degraded faster than HG especially within initial 30 min, indicating that the β-1, 4-mannuronic bonds are more susceptible to be ozonated than α-1, 4-guluronic bonds. However, HM/HG degraded to LMWA in 2 h and reached a plateau. Therefore, we employed mass spectrometry (MS) to profile the degraded products of LMWA polymannuronate (PM) and polyguluronate (PG) in more intense conditions. The results indicated that the oxidation process continued until all reducing ends were converted to carboxyl groups. The o-diol could directly oxidize to o-dialdehyde. This study provides a MS based elucidation of the mechanism by which alginate cleaves to oligosaccharides through ozonation.
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Affiliation(s)
- Xuze Ai
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao 266003, China
| | - Qingfeng Niu
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao 266003, China
| | - Shijie Li
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao 266003, China
| | - Chanjuan Liu
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao 266003, China
| | - Nianxi Wu
- Qingdao Gather Great Ocean Algae Industry Group CO., LTD, Qingdao 266500, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Qingdao Marine Science and Technology Center, Qingdao 266237, China.
| | - Guoyun Li
- Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, Qingdao 266003, China; Laboratory for Marine Drugs and Bioproducts, Qingdao Marine Science and Technology Center, Qingdao 266237, China.
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Wu E, Huang L, Shen Y, Wei Z, Li Y, Wang J, Chen Z. Application of gelatin-based composites in bone tissue engineering. Heliyon 2024; 10:e36258. [PMID: 39224337 PMCID: PMC11367464 DOI: 10.1016/j.heliyon.2024.e36258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 07/25/2024] [Accepted: 08/13/2024] [Indexed: 09/04/2024] Open
Abstract
Natural bone tissue has the certain function of self-regeneration and repair, but it is difficult to repair large bone damage. Recently, although autologous bone grafting is the "gold standard" for improving bone repair, it has high cost, few donor sources. Besides, allogeneic bone grafting causes greater immune reactions, which hardly meet clinical needs. The bone tissue engineering (BTE) has been developed to promote bone repair. Gelatin, due to its biocompatibility, receives a great deal of attention in the BTE research field. However, the disadvantages of natural gelatin are poor mechanical properties and single structural property. With the development of BTE, gelatin is often used in combination with a range of natural, synthetic polymers, and inorganic materials to achieve synergistic effects for the complex physiological process of bone repair. The review delves into the fundamental structure and unique properties of gelatin, as well as the excellent properties necessary for bone scaffold materials. Then this review explores the application of modified gelatin three-dimensional (3D) scaffolds with various structures in bone repair, including 3D fiber scaffolds, hydrogels, and nanoparticles. In addition, the review focuses on the excellent efficacy of composite bone tissue scaffolds consisting of modified gelatin, various natural or synthetic polymeric materials, as well as bioactive ceramics and inorganic metallic/non-metallic materials in the repair of bone defects. The combination of these gelatin-based composite scaffolds provides new ideas for the design of scaffold materials for bone repair with good biosafety.
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Affiliation(s)
- Enguang Wu
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Lianghui Huang
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Yao Shen
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Zongyi Wei
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Yangbiao Li
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Jin Wang
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
| | - Zhenhua Chen
- Jiangxi Province Key Laboratory of Drug Design and Evaluation, School of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang, 330013, China
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Fang X, Li S, Kang W, Lin C, Wang J, Ke Q, Wang C, Wang Q, Chen Q. Enhanced algin oligosaccharide production through selective breeding and optimization of growth and degradation conditions in Cobetia sp. cqz5-12-M1. Sci Rep 2024; 14:19550. [PMID: 39174820 PMCID: PMC11341896 DOI: 10.1038/s41598-024-70472-w] [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: 03/01/2024] [Accepted: 08/16/2024] [Indexed: 08/24/2024] Open
Abstract
Algin oligosaccharides have been applied in diverse industries and could be innovative synthesized by alginate-degrading bacteria. For enhance the alginate degradation efficiency to produce more algin oligosaccharides, a mutant strain (Cobetia sp. cqz5-12-M1) was obtained through the complex mutagenesis using UV and the alkylating agent 1-methyl-3-nitro-1-nitrosoguanidine. The enzyme activity of the fermentation supernatant of mutant exhibited a significant 38.09% (53.98 ± 0.69 U/mL) increase, and its optimal growth conditions were determined as: 5 g/L sodium alginate, 5 g/L yeast powder, 30 g/L NaCl, 2 g/L K2HPO4, 2 g/L KH2PO4, 1 g/L MgSO4•7H2O, 0.01 g/L FeSO4•7H2O, pH 6.5, and 34 ℃. Moreover, its optimal degradation conditions were identified as: 5 g/L sodium alginate, 5 g/L yeast powder, 30 g/L NaCl, 2 g/L K2HPO4, 2 g/L KH2PO4, 1 g/L MgSO4•7H2O, 0.01 g/L FeSO4•7H2O, pH 6.5, 31 ℃ and 72 h, yielding an enzyme activity of 120.98 ± 1.40 U/mL in the fermentation supernatant. Conclusive experiments on reagent tolerance revealed the growth of the mutant strain was significantly inhibited by 3% hydrogen peroxide, 5% carbolic acid, and 10 mg/mL gatifloxacin. Additionally, the alginate degradation capacity of mutant strain was highly significantly inhibited by 75% ethanol and all tested antibiotics.
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Affiliation(s)
- Xinru Fang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Shuang Li
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Weixiao Kang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Chaoyou Lin
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Jiangmei Wang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Qiang Ke
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Chuanhua Wang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Qi Wang
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China
| | - Qiongzhen Chen
- College of Life and Environmental Science, Wenzhou University, Wenzhou, 325035, People's Republic of China.
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Liu M, Deng X, Zhao Y, Everaert N, Zhang H, Xia B, Schroyen M. Alginate Oligosaccharides Enhance Antioxidant Status and Intestinal Health by Modulating the Gut Microbiota in Weaned Piglets. Int J Mol Sci 2024; 25:8029. [PMID: 39125598 PMCID: PMC11311613 DOI: 10.3390/ijms25158029] [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: 06/16/2024] [Revised: 07/16/2024] [Accepted: 07/21/2024] [Indexed: 08/12/2024] Open
Abstract
Alginate oligosaccharides (AOSs), which are an attractive feed additive for animal production, exhibit pleiotropic bioactivities. In the present study, we investigated graded doses of AOS-mediated alterations in the physiological responses of piglets by determining the intestinal architecture, barrier function, and microbiota. A total of 144 weaned piglets were allocated into four dietary treatments in a completely random design, which included a control diet (CON) and three treated diets formulated with 250 mg/kg (AOS250), 500 mg/kg (AOS500), and 1000 mg/kg AOS (AOS1000), respectively. The trial was carried out for 28 days. Our results showed that AOS treatment reinforced the intestinal barrier function by increasing the ileal villus height, density, and fold, as well as the expression of tight junction proteins, especially at the dose of 500 mg/kg AOS. Meanwhile, supplementations with AOSs showed positive effects on enhancing antioxidant capacity and alleviating intestinal inflammation by elevating the levels of antioxidant enzymes and inhibiting excessive inflammatory cytokines. The DESeq2 analysis showed that AOS supplementation inhibited the growth of harmful bacteria Helicobacter and Escherichia_Shigella and enhanced the relative abundance of Faecalibacterium and Veillonella. Collectively, these findings suggested that AOSs have beneficial effects on growth performance, antioxidant capacity, and gut health in piglets.
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Affiliation(s)
- Ming Liu
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China; (M.L.)
- Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China (H.Z.)
| | - Xiong Deng
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China; (M.L.)
| | - Yong Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China (H.Z.)
| | - Nadia Everaert
- Nutrition and Animal Microbiota Ecosystems Laboratory, Department of Biosystems, KU Leuven, 3001 Leuven, Belgium
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China (H.Z.)
| | - Bing Xia
- Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China; (M.L.)
| | - Martine Schroyen
- Precision Livestock and Nutrition Unit, Gembloux Agro-Bio Tech, University of Liège, Passage des Déportés 2, 5030 Gembloux, Belgium
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6
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Liu Y, Song J, Liu S, Nan Y, Zheng W, Pang X, Chen X, Liang H, Zhang J, Ma B. A universal method for profiling and characterization of oligosaccharides in traditional Chinese medicines. J Pharm Biomed Anal 2024; 244:116129. [PMID: 38579408 DOI: 10.1016/j.jpba.2024.116129] [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: 02/05/2024] [Revised: 03/11/2024] [Accepted: 03/22/2024] [Indexed: 04/07/2024]
Abstract
Oligosaccharides constitute fundamental components in numerous traditional Chinese medicines (TCMs). Conventional chromatographic methods for natural product analysis are not suitable for oligosaccharides due to their large polarity and structural similarity. Herein, an ultra-high performance liquid chromatography with charged aerosol detector (UHPLC-CAD) method was developed for the profiling of oligosaccharides using 9 neutral (DP3-DP11) reference oligosaccharides. Various factors, including columns, mobile phase, elution conditions, flow rate, and column temperature were systematically examined. Optimal separation was achieved using an Amide column with gradient elution within 18 min, at 0.5 mL/min flow rate and 30°C column temperature. Moreover, an ultra-high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC-Q-TOF/MS) method was also optimized to provide structural information. The developed method was applied to detect oligosaccharides in several TCMs, including Morindae Officinalis Radix (MOR), Ziziphi Spinosae Semen (ZSS), Menthae Haplocalycis Herba (MHH) and Chrysanthemi Indici Flos (CIF), revealing 9 and 16 oligosaccharides being uncovered from MHH and CIF respectively for the first time. This study presents a versatile UHPLC-CAD and UHPLC-Q-TOF/MS method with the potential for advancing oligosaccharides discovery and contributing to the quality analysis of TCMs.
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Affiliation(s)
- Yue Liu
- Guangdong Pharmaceutical University, Guangzhou 510060, China; Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Juan Song
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Si Liu
- Beijing Institute of Radiation Medicine, Beijing 100850, China; Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Yi Nan
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Wei Zheng
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xu Pang
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Xiaojuan Chen
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Haizhen Liang
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Jie Zhang
- Beijing Institute of Radiation Medicine, Beijing 100850, China
| | - Baiping Ma
- Guangdong Pharmaceutical University, Guangzhou 510060, China; Beijing Institute of Radiation Medicine, Beijing 100850, China.
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7
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Zhou T, Li X. Chemically modified seaweed polysaccharides: Improved functional and biological properties and prospective in food applications. Compr Rev Food Sci Food Saf 2024; 23:e13396. [PMID: 38925601 DOI: 10.1111/1541-4337.13396] [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: 01/08/2024] [Revised: 05/14/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024]
Abstract
Seaweed polysaccharides are natural biomacromolecules with unique physicochemical properties (e.g., good gelling, emulsifying, and film-forming properties) and diverse biological activities (e.g., anticoagulant, antioxidant, immunoregulatory, and antitumor effects). Furthermore, they are nontoxic, biocompatible and biodegradable, and abundant in resources. Therefore, they have been widely utilized in food, cosmetics, and pharmaceutical industries. However, their properties and bioactivities sometimes are not satisfactory for some purposes. Modification of polysaccharides can impart the amphiphilicity and new functions to the biopolymers and change the structure and conformation, thus effectively improving their functional properties and biological activities so as to meet the requirement for targeted applications. This review outlined the modification methods of representative red algae polysaccharides (carrageenan and agar), brown algae polysaccharides (fucoidan, alginate, and laminaran), and green algae polysaccharides (ulvan) that have potential food applications, including etherification, esterification, degradation, sulfation, phosphorylation, selenylation, and so on. The improved functional properties and bioactivities of the modified seaweed polysaccharides and their potential food applications are also summarized.
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Affiliation(s)
- Tao Zhou
- Key Laboratory for Food Microbial Technology of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
| | - Xinyue Li
- Key Laboratory for Food Microbial Technology of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, Zhejiang, P. R. China
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Wang P, Cai Y, Zhong H, Chen R, Yi Y, Ye Y, Li L. Expression and Characterization of an Efficient Alginate Lyase from Psychromonas sp. SP041 through Metagenomics Analysis of Rotten Kelp. Genes (Basel) 2024; 15:598. [PMID: 38790228 PMCID: PMC11121350 DOI: 10.3390/genes15050598] [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: 04/05/2024] [Revised: 04/26/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024] Open
Abstract
Alginate is derived from brown algae, which can be cultivated in large quantities. It can be broken down by alginate lyase into alginate oligosaccharides (AOSs), which exhibit a higher added value and better bioactivity than alginate. In this study, metagenomic technology was used to screen for genes that code for high-efficiency alginate lyases. The candidate alginate lyase gene alg169 was detected from Psychromonas sp. SP041, the most abundant species among alginate lyase bacteria on selected rotten kelps. The alginate lyase Alg169 was heterologously expressed in Escherichia coli BL21 (DE3), Ni-IDA-purified, and characterized. The optimum temperature and pH of Alg169 were 25 °C and 7.0, respectively. Metal ions including Mn2+, Co2+, Ca2+, Mg2+, Ni2+, and Ba2+ led to significantly increased enzyme activity. Alg169 exhibited a pronounced dependence on Na+, and upon treatment with Mn2+, its activity surged by 687.57%, resulting in the highest observed enzyme activity of 117,081 U/mg. Bioinformatic analysis predicted that Alg169 would be a double-domain lyase with a molecular weight of 65.58 kDa. It is a bifunctional enzyme with substrate specificity to polyguluronic acid (polyG) and polymannuronic acid (polyM). These results suggest that Alg169 is a promising candidate for the efficient manufacturing of AOSs from brown seaweed.
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Affiliation(s)
- Ping Wang
- Qingdao Academy of Chinese Medical Sciences, Shandong University of Traditional Chinese Medicine, Qingdao 266112, China;
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China;
| | - Yi Cai
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (Y.C.); (R.C.)
| | - Hua Zhong
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China;
| | - Ruiting Chen
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (Y.C.); (R.C.)
| | - Yuetao Yi
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China;
| | - Yanrui Ye
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, China; (Y.C.); (R.C.)
| | - Lili Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China;
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Cai J, Zhang D, Xie F. The role of alginate in starch nanocrystals-stabilized Pickering emulsions: From physical stability and microstructure to rheology behavior. Food Chem 2024; 431:137017. [PMID: 37562336 DOI: 10.1016/j.foodchem.2023.137017] [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: 03/23/2023] [Revised: 06/25/2023] [Accepted: 07/24/2023] [Indexed: 08/12/2023]
Abstract
Sodium alginate (SA) was used as a co-stabilizer to improve the Pickering emulsions stabilized by starch nanocrystals (SNC). Compared with pure SNC, SNC/SA complexes possess better neutral wettability with the contact angle approaching to 90°, more surface negative charges, and lower oil-water interfacial tension. These properties of particles make as-prepared emulsion higher stability with the lower creaming index and average droplet size. Furthermore, the emulsion exhibited good stability against salt (0-600 mM) and pH (2.0-6.0) at higher SA concentration (1.0 wt%). Confocal laser scanning microscopy (CLSM) images proved that SNC could be effectively adsorbed at the oil-water interface with the aid of SA. Rheological analysis showed that higher content of SA resulted in improved strength and higher viscosity of emulsion system. Results from this work indicating that SA could be a useful co-stabilizer to fulfill the demands of Pickering emulsions stabilized by SNC with stable characteristics.
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Affiliation(s)
- Jie Cai
- National R&D Center for Se-rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China.
| | - Die Zhang
- National R&D Center for Se-rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China; Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China
| | - Fang Xie
- National R&D Center for Se-rich Agricultural Products Processing, Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products, School of Modern Industry for Selenium Science and Engineering, Wuhan Polytechnic University, Wuhan 430023, China.
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10
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Zhang W, Ren H, Wang X, Dai Q, Liu X, Ni D, Zhu Y, Xu W, Mu W. Rational design for thermostability improvement of a novel PL-31 family alginate lyase from Paenibacillus sp. YN15. Int J Biol Macromol 2023; 253:126919. [PMID: 37717863 DOI: 10.1016/j.ijbiomac.2023.126919] [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: 06/12/2023] [Revised: 09/13/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023]
Abstract
Currently, alginate oligosaccharides (AOS) become attractive due to their excellent physiological effects. AOS has been widely used in food, pharmaceutical, and cosmetic industries. Generally, AOS can be produced from alginate using alginate lyase (ALyase) as the biocatalyst. However, most ALyase display poor thermostability. In this study, a thermostable ALyase from Paenibacillus sp. YN15 (Payn ALyase) was characterized. It belonged to the polysaccharide lyase (PL) 31 family and displayed poly β-D-mannuronate (Poly M) preference. Under the optimum condition (pH 8.0, 55 °C, 50 mM NaCl), it exhibited maximum activity of 90.3 U/mg and efficiently degraded alginate into monosaccharides and AOS with polymerization (DP) of 2-4. Payn ALyase was relatively stable at 55 °C, but the thermostability dropped rapidly at higher temperatures. To further improve its thermostability, rational design mutagenesis was carried out based on a combination of FireProt, Consensus Finder, and PROSS analysis. Finally, a triple-point mutant K71P/Y129G/S213G was constructed. The optimum temperature was increased from 55 to 70 °C, and the Tm was increased from 62.7 to 64.1 °C. The residual activity after 30 min incubation at 65 °C was enhanced from 36.0 % to 83.3 %. This study provided a promising ALyase mutant for AOS industrial production.
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Affiliation(s)
- Wenli Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China
| | - Hu Ren
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xinxiu Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Quanyu Dai
- China Rural Technology Development Center, Beijing 100045, China
| | - Xiaoyong Liu
- Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China
| | - Dawei Ni
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wei Xu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China; Shandong Haizhibao Ocean Technology Co., Ltd, Weihai, Shandong 264333, China.
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
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11
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Zhang E, Shang C, Ma M, Zhang X, Liu Y, Song S, Li X. Polyguluronic acid alleviates doxorubicin-induced cardiotoxicity by suppressing Peli1-NLRP3 inflammasome-mediated pyroptosis. Carbohydr Polym 2023; 321:121334. [PMID: 37739547 DOI: 10.1016/j.carbpol.2023.121334] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/24/2023]
Abstract
Polyguluronic acid (PG), a polysaccharide from alginate, possesses excellent bioactivities. We prepared high-purity PG with 10.41 kDa molecular weight (Mw) and a 59 average degree of polymerization (DP) by acid hydrolysis, three pH grades, Q-Sepharose column elution, and Sephadex G-25 column desalination. Then, we evaluated the PG protective effects on doxorubicin-induced cardiotoxicity (DIC) in vitro and in vivo. The nontoxic PG enhanced cellular viability, reduced cell pyroptosis morphology, diminished the LDH and IL-1β release, and downregulated expressions of ASC oligomerization, NLRP3, cl-CASP1, and GSDMD, by which PG protected the cardiomyocytes from NLRP3 inflammasome-mediated pyroptosis in doxorubicin-stimulated HL-1 cells and C57BL/6J mice. The probable underlying mechanism may be that PG downregulated doxorubicin -induced Peli1, the deficiency of which could inhibit doxorubicin-induced NLRP3 inflammasome-mediated pyroptosis. These results suggested that polysaccharide PG from alginate could prevent DIC and may be a potential therapeutic agent or bioactive material for preventing DIC.
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Affiliation(s)
- E Zhang
- Marine College, Shandong University, Weihai, Shandong 264209, China.
| | - Chuangeng Shang
- Marine College, Shandong University, Weihai, Shandong 264209, China.
| | - Mingtao Ma
- Marine College, Shandong University, Weihai, Shandong 264209, China.
| | - Xuanfeng Zhang
- Marine College, Shandong University, Weihai, Shandong 264209, China.
| | - Yu Liu
- Marine College, Shandong University, Weihai, Shandong 264209, China.
| | - Shuliang Song
- Marine College, Shandong University, Weihai, Shandong 264209, China.
| | - Xia Li
- Marine College, Shandong University, Weihai, Shandong 264209, China; School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
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12
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Wu Q, Hu Y, Yu B, Hu H, Xu FJ. Polysaccharide-based tumor microenvironment-responsive drug delivery systems for cancer therapy. J Control Release 2023; 362:19-43. [PMID: 37579973 DOI: 10.1016/j.jconrel.2023.08.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/05/2023] [Accepted: 08/11/2023] [Indexed: 08/16/2023]
Abstract
The biochemical indicators of tumor microenvironment (TME) that are different from normal tissues provide the possibility for constructing intelligent drug delivery systems (DDSs). Polysaccharides with good biocompatibility, biodegradability, and unique biological properties are ideal materials for constructing DDSs. Nanogels, micelles, organic-inorganic nanocomposites, hydrogels, and microneedles (MNs) are common polysaccharide-based DDSs. Polysaccharide-based DDSs enable precise control of drug delivery and release processes by incorporating TME-specific biochemical indicators. The classification and design strategies of polysaccharide-based TME-responsive DDSs are comprehensively reviewed. The advantages and challenges of current polysaccharide-based DDSs are summarized and the future directions of development are foreseen. The polysaccharide-based TME-responsive DDSs are expected to provide new strategies and solutions for cancer therapy and make important contributions to the realization of precision medicine.
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Affiliation(s)
- Qimeng Wu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Yang Hu
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bing Yu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China
| | - Hao Hu
- College of Chemistry and Chemical Engineering, College of Materials Science and Engineering, Institute of Biomedical Materials and Engineering, Qingdao University, Qingdao 266071, China.
| | - Fu-Jian Xu
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology), Ministry of Education, Beijing Laboratory of Biomedical Materials, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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13
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Sun XH, Chen XL, Wang XF, Zhang XR, Sun XM, Sun ML, Zhang XY, Zhang YZ, Zhang YQ, Xu F. Cost-effective production of alginate oligosaccharides from Laminaria japonica roots by Pseudoalteromonas agarivorans A3. Microb Cell Fact 2023; 22:179. [PMID: 37689719 PMCID: PMC10492272 DOI: 10.1186/s12934-023-02170-7] [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: 05/15/2023] [Accepted: 08/07/2023] [Indexed: 09/11/2023] Open
Abstract
BACKGROUND Alginate oligosaccharides (AOs) are the degradation products of alginate, a natural polysaccharide abundant in brown algae. AOs generated by enzymatic hydrolysis have diverse bioactivities and show broad application potentials. AOs production via enzymolysis is now generally with sodium alginate as the raw material, which is chemically extracted from brown algae. In contrast, AOs production by direct degradation of brown algae is more advantageous on account of its cost reduction and is more eco-friendly. However, there have been only a few attempts reported in AOs production from direct degradation of brown algae. RESULTS In this study, an efficient Laminaria japonica-decomposing strain Pseudoalteromonas agarivorans A3 was screened. Based on the secretome and mass spectrum analyses, strain A3 showed the potential as a cell factory for AOs production by secreting alginate lyases to directly degrade L. japonica. By using the L. japonica roots, which are normally discarded in the food industry, as the raw material for both fermentation and enzymatic hydrolysis, AOs were produced by the fermentation broth supernatant of strain A3 after optimization of the alginate lyase production and hydrolysis parameters. The generated AOs mainly ranged from dimers to tetramers, among which trimers and tetramers were predominant. The degradation efficiency of the roots reached 54.58%, the AOs production was 33.11%, and the AOs purity was 85.03%. CONCLUSION An efficient, cost-effective and green process for AOs production directly from the underutilized L. japonica roots by using strain A3 was set up, which differed from the reported processes in terms of the substrate and strain used for fermentation and the AOs composition. This study provides a promising platform for scalable production of AOs, which may have application potentials in industry and agriculture.
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Affiliation(s)
- Xiao-Hui Sun
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Xiao-Fei Wang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Xin-Ru Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
| | - Xiao-Meng Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
| | - Mei-Ling Sun
- Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China
| | - Xi-Ying Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China
| | - Yu-Zhong Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China
- Frontiers Science Center for Deep Ocean Multispheres and Earth System & College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China
| | - Yu-Qiang Zhang
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China.
| | - Fei Xu
- State Key Laboratory of Microbial Technology, Marine Biotechnology Research Center, Shandong University, Qingdao, 266237, China.
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, 266237, China.
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14
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Pritchard MF, Powell LC, Adams JYM, Menzies G, Khan S, Tøndervik A, Sletta H, Aarstad O, Skjåk-Bræk G, McKenna S, Buurma NJ, Farnell DJJ, Rye PD, Hill KE, Thomas DW. Structure-Activity Relationships of Low Molecular Weight Alginate Oligosaccharide Therapy against Pseudomonas aeruginosa. Biomolecules 2023; 13:1366. [PMID: 37759766 PMCID: PMC10527064 DOI: 10.3390/biom13091366] [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: 06/29/2023] [Revised: 08/26/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Abstract
Low molecular weight alginate oligosaccharides have been shown to exhibit anti-microbial activity against a range of multi-drug resistant bacteria, including Pseudomonas aeruginosa. Previous studies suggested that the disruption of calcium (Ca2+)-DNA binding within bacterial biofilms and dysregulation of quorum sensing (QS) were key factors in these observed effects. To further investigate the contribution of Ca2+ binding, G-block (OligoG) and M-block alginate oligosaccharides (OligoM) with comparable average size DPn 19 but contrasting Ca2+ binding properties were prepared. Fourier-transform infrared spectroscopy demonstrated prolonged binding of alginate oligosaccharides to the pseudomonal cell membrane even after hydrodynamic shear treatment. Molecular dynamics simulations and isothermal titration calorimetry revealed that OligoG exhibited stronger interactions with bacterial LPS than OligoM, although this difference was not mirrored by differential reductions in bacterial growth. While confocal laser scanning microscopy showed that both agents demonstrated similar dose-dependent reductions in biofilm formation, OligoG exhibited a stronger QS inhibitory effect and increased potentiation of the antibiotic azithromycin in minimum inhibitory concentration and biofilm assays. This study demonstrates that the anti-microbial effects of alginate oligosaccharides are not purely influenced by Ca2+-dependent processes but also by electrostatic interactions that are common to both G-block and M-block structures.
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Affiliation(s)
- Manon F. Pritchard
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
| | - Lydia C. Powell
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
- Microbiology and Infectious Disease Group, Swansea University Medical School, Swansea SA2 8PP, UK
| | - Jennifer Y. M. Adams
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
| | - Georgina Menzies
- School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK;
| | - Saira Khan
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
| | - Anne Tøndervik
- Department of Bioprocess Technology, SINTEF Materials and Chemistry, N-7465 Trondheim, Norway; (A.T.); (H.S.)
| | - Håvard Sletta
- Department of Bioprocess Technology, SINTEF Materials and Chemistry, N-7465 Trondheim, Norway; (A.T.); (H.S.)
| | - Olav Aarstad
- Department of Biotechnology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway; (O.A.); (G.S.-B.)
| | - Gudmund Skjåk-Bræk
- Department of Biotechnology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway; (O.A.); (G.S.-B.)
| | - Stephen McKenna
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
| | - Niklaas J. Buurma
- Physical Organic Chemistry Centre, School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK;
| | - Damian J. J. Farnell
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
| | - Philip D. Rye
- AlgiPharma AS, Industriveien 33, N-1337 Sandvika, Norway;
| | - Katja E. Hill
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
| | - David W. Thomas
- Advanced Therapies Group, School of Dentistry, Cardiff University, Cardiff CF14 4XY, UK; (L.C.P.); (J.Y.M.A.); (S.K.); (S.M.); (D.J.J.F.); (K.E.H.); (D.W.T.)
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15
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Bi D, Li M, Yao L, Zhu N, Fang W, Guo W, Wu Y, Xu H, Hu Z, Xu X. Enhancement of the chemical stability of nanoemulsions loaded with curcumin by unsaturated mannuronate oligosaccharide. Food Chem 2023; 414:135670. [PMID: 36827777 DOI: 10.1016/j.foodchem.2023.135670] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 01/18/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
Unsaturated mannuronate oligosaccharide (MOS) is an acidic oligosaccharide prepared from alginate-derived polymannuronate by enzymatic depolymerization, followed by double bond formation between C-4 and C-5 at the nonreducing end. In this study, MOS was used as a stabilizer to fabricate O/W nanoemulsions loaded with curcumin (MOS-CUR) for the first time. The results revealed that the MOS-CUR showed small droplet sizes and narrow size distributions and was slightly more stable than normal oil-in-water (O/W) curcumin nanoemulsions (water-CUR). Additionally, MOS can improve the superoxide anion scavenging ability and iron ion reducing ability of the curcumin nanoemulsion system. Although the digestion behaviour of MOS-CUR and water-CUR was similar, the bioavailability of curcumin in MOS-CUR was significantly higher than that in water-CUR. All these results indicated that MOS could be used as a stabilizer for preparing nanoemulsions to easily encapsulate labile nutrients and to enhance the bioavailability and antioxidant capacity of these nutrients.
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Affiliation(s)
- Decheng Bi
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Meiting Li
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China; Quality and Standards Academy, Shenzhen Technology University, Shenzhen 518118, PR China
| | - Lijun Yao
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Nanting Zhu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Weishan Fang
- Department of Experimental Teaching Center, School of Basic Medical Sciences, Shenzhen University, Shenzhen 518060, PR China
| | - Wushuang Guo
- Department of Stomatology, Shenzhen University General Hospital, Shenzhen University, Shenzhen, Guangdong 518055, PR China; Institute of Stomatological Research, Shenzhen University, Shenzhen, Guangdong 518055, PR China
| | - Yan Wu
- Instrumental Analysis Center, Shenzhen University, Shenzhen 518060, PR China
| | - Hong Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, PR China.
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16
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Cheong KL, Chen S, Teng B, Veeraperumal S, Zhong S, Tan K. Oligosaccharides as Potential Regulators of Gut Microbiota and Intestinal Health in Post-COVID-19 Management. Pharmaceuticals (Basel) 2023; 16:860. [PMID: 37375807 DOI: 10.3390/ph16060860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 06/05/2023] [Accepted: 06/07/2023] [Indexed: 06/29/2023] Open
Abstract
The COVID-19 pandemic has had a profound impact worldwide, resulting in long-term health effects for many individuals. Recently, as more and more people recover from COVID-19, there is an increasing need to identify effective management strategies for post-COVID-19 syndrome, which may include diarrhea, fatigue, and chronic inflammation. Oligosaccharides derived from natural resources have been shown to have prebiotic effects, and emerging evidence suggests that they may also have immunomodulatory and anti-inflammatory effects, which could be particularly relevant in mitigating the long-term effects of COVID-19. In this review, we explore the potential of oligosaccharides as regulators of gut microbiota and intestinal health in post-COVID-19 management. We discuss the complex interactions between the gut microbiota, their functional metabolites, such as short-chain fatty acids, and the immune system, highlighting the potential of oligosaccharides to improve gut health and manage post-COVID-19 syndrome. Furthermore, we review evidence of gut microbiota with angiotensin-converting enzyme 2 expression for alleviating post-COVID-19 syndrome. Therefore, oligosaccharides offer a safe, natural, and effective approach to potentially improving gut microbiota, intestinal health, and overall health outcomes in post-COVID-19 management.
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Affiliation(s)
- Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Shutong Chen
- Department of Biology, College of Science, Shantou University, Shantou 515063, China
| | - Bo Teng
- Department of Biology, College of Science, Shantou University, Shantou 515063, China
| | - Suresh Veeraperumal
- Department of Biology, College of Science, Shantou University, Shantou 515063, China
| | - Saiyi Zhong
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and Safety, Guangdong Province Engineering Laboratory for Marine Biological Products, Guangdong Provincial Engineering Technology Research Center of Seafood, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Karsoon Tan
- Guangxi Key Laboratory of Beibu Gulf Biodiversity Conservation, Beibu Gulf University, Qinzhou 535000, China
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17
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Putri AP, Bose RK, Chalid M, Picchioni F. Rheological and Self-Healing Behavior of Hydrogels Synthesized from l-Lysine-Functionalized Alginate Dialdehyde. Polymers (Basel) 2023; 15:polym15041010. [PMID: 36850295 PMCID: PMC9959054 DOI: 10.3390/polym15041010] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/22/2023] Open
Abstract
Alginate dialdehyde and l-lysine-functionalized alginate dialdehyde were prepared to provide active aldehyde and l-lysine sites along the alginate backbone, respectively. Different concentrations of substrates and the reduction agent were added, and their influence on the degree of l-lysine substitution was evaluated. An amination reduction reaction (with l-lysine) was conducted on alginate dialdehyde with a 31% degree of oxidation. The NMR confirmed the presence of l-lysine functionality with the degree of substitution of 20%. The structural change of the polymer was observed via FTIR spectroscopy, confirming the formation of Schiff base covalent linkage after the crosslinking. The additional l-lysine sites on functionalized alginate dialdehyde provide more crosslinking sites on the hydrogel, which leads to a higher modulus storage rate than in the original alginate dialdehyde. This results in dynamic covalent bonds, which are attributed to the alginate derivative-gelatin hydrogels with shear-thinning and self-healing properties. The results suggested that the concentration and stoichiometric ratio of alginate dialdehyde, l-lysine-functionalized alginate dialdehyde, and gelatin play a fundamental role in the hydrogel's mechanical properties.
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Affiliation(s)
- Arlina Prima Putri
- Department of Chemical Engineering—Product Technology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Metallurgical and Material Engineering Department, Universitas Indonesia, Depok 16424, Indonesia
| | - Ranjita K. Bose
- Department of Chemical Engineering—Product Technology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Mochamad Chalid
- Metallurgical and Material Engineering Department, Universitas Indonesia, Depok 16424, Indonesia
| | - Francesco Picchioni
- Department of Chemical Engineering—Product Technology, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- Correspondence:
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18
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Wei B, Ren P, Yang R, Gao Y, Tang Q, Xue C, Wang Y. Ameliorative Effect of Mannuronate Oligosaccharides on Hyperuricemic Mice via Promoting Uric Acid Excretion and Modulating Gut Microbiota. Nutrients 2023; 15:nu15020417. [PMID: 36678288 PMCID: PMC9865265 DOI: 10.3390/nu15020417] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/04/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
Mannuronate oligosaccharide (MOS) is α-D-mannuronic acid polymer with 1,4-glycosidic linkages that possesses beneficial biological properties. The aim of this study was to investigate the hypouricemic effect of MOS in hyperuricemic mice and demonstrate the possible protective mechanisms involved. In this research, 200 mg/kg/day of MOS was orally administered to hyperuricemic mice for four weeks. The results showed that the MOS treatment significantly reduced the serum uric acid (SUA) level from 176.4 ± 7.9 μmol/L to 135.7 ± 10.9 μmol/L (p < 0.05). MOS alleviated the inflammatory response in the kidney. Moreover, MOS promoted uric acid excretion by regulating the protein levels of renal GLUT9, URAT1 and intestinal GLUT9, ABCG2. MOS modulated the gut microbiota in hyperuricemic mice and decreased the levels of Tyzzerella. In addition, research using antibiotic-induced pseudo-sterile mice demonstrated that the gut microbiota played a crucial role in reducing elevated serum uric acid of MOS in mice. In conclusion, MOS may be a potential candidate for alleviating HUA symptoms and regulating gut microbiota.
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Affiliation(s)
- Biqian Wei
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Pengfei Ren
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Ruzhen Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Yuan Gao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Qingjuan Tang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
- Correspondence: ; Tel.: +86-186-6140-2667
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China
| | - Yuming Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China
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19
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Chen C, Cao S, Zhu B, Jiang L, Yao Z. Biochemical characterization and elucidation the degradation pattern of a new cold-adapted and Ca2+ activated alginate lyase for efficient preparation of alginate oligosaccharides. Enzyme Microb Technol 2023; 162:110146. [DOI: 10.1016/j.enzmictec.2022.110146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/16/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
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20
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Bi D, Huang J, Cao J, Yao L, Guo W, Zhang Z, Wu Y, Xu H, Hu Z, Xu X. Preparation, characterization and immunomodulatory effects of unsaturated sulfated oligoguluronic acid. Carbohydr Polym 2022; 301:120370. [DOI: 10.1016/j.carbpol.2022.120370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/04/2022] [Accepted: 11/16/2022] [Indexed: 11/22/2022]
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21
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Bi D, Li M, Zhu N, Yao L, Fang W, Wu Y, Xu H, Hu Z, Xu X. Unsaturated guluronate oligosaccharide used as a stabilizer of oil-in-water nanoemulsions loaded with bioactive nutrients. Food Chem X 2022; 16:100469. [PMID: 36299863 PMCID: PMC9589015 DOI: 10.1016/j.fochx.2022.100469] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 08/23/2022] [Accepted: 10/08/2022] [Indexed: 11/19/2022] Open
Abstract
Unsaturated guluronate oligosaccharide (GOS) is generated via alginate-derived polyguluronate (PG) degradation by alginate lyase, followed by formation of a double bond between C-4 and C-5 at the nonreducing end. In this study, GOS was first used as a stabilizer to fabricate O/W nanoemulsions loaded with resveratrol (GOS-RES). Our results revealed that both the GOS-RES and normal O/W resveratrol nanoemulsions (water-RES) showed small droplet sizes and narrow size distributions under certain experimental conditions. However, the particle size and stability of the GOS-RES were slightly greater than those of the water-RES in acidic and neutral environments and at high temperatures. Furthermore, the GOS-RES exhibited a better sustained release effect for resveratrol than the water-RES. Moreover, the GOS-RES showed a significant superoxide radical scavenging effect. All these results demonstrated that GOS has good prospects for preparing nanoemulsions to encapsulate hydrophobic nutrients, which could be applied as food-grade components in beverages and other foods.
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Affiliation(s)
- Decheng Bi
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Meiting Li
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- Quality and Standards Academy, Shenzhen Technology University, Shenzhen 518118, China
| | - Nanting Zhu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Lijun Yao
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Weishan Fang
- Department of Experimental Teaching Center, School of Basic Medical Sciences, Shenzhen University, Shenzhen 518060, China
| | - Yan Wu
- Instrumental Analysis Center, Shenzhen University, Shenzhen 518060, China
| | - Hong Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- Corresponding authors.
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- Corresponding authors.
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Bi D, Yang X, Yao L, Hu Z, Li H, Xu X, Lu J. Potential Food and Nutraceutical Applications of Alginate: A Review. Mar Drugs 2022; 20:md20090564. [PMID: 36135753 PMCID: PMC9502916 DOI: 10.3390/md20090564] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 11/16/2022] Open
Abstract
Alginate is an acidic polysaccharide mainly extracted from kelp or sargassum, which comprises 40% of the dry weight of algae. It is a linear polymer consisting of β-D-mannuronic acid (M) and α-L-guluronic acid (G) with 1,4-glycosidic linkages, possessing various applications in the food and nutraceutical industries due to its unique physicochemical properties and health benefits. Additionally, alginate is able to form a gel matrix in the presence of Ca2+ ions. Alginate properties also affect its gelation, including its structure and experimental conditions such as pH, temperature, crosslinker concentration, residence time and ionic strength. These features of this polysaccharide have been widely used in the food industry, including in food gels, controlled-release systems and film packaging. This review comprehensively covers the analysis of alginate and discussed the potential applications of alginate in the food industry and nutraceuticals.
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Affiliation(s)
- Decheng Bi
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xu Yang
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
| | - Lijun Yao
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Zhangli Hu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Hui Li
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Xu Xu
- Shenzhen Key Laboratory of Marine Bioresources and Ecology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
- Correspondence: (X.X.); (J.L.); Tel.: +86-755-86532680 (X.X.); +64-9-9219999 (ext. 7381) (J.L.)
| | - Jun Lu
- School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland 1142, New Zealand
- College of Food Science and Technology, Nanchang University, Nanchang 330031, China
- Maurice Wilkins Centre for Molecular Biodiscovery, Auckland 1142, New Zealand
- Correspondence: (X.X.); (J.L.); Tel.: +86-755-86532680 (X.X.); +64-9-9219999 (ext. 7381) (J.L.)
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