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Awan A, Bartlett A, Blakeley-Ruiz JA, Richie T, Theriot CM, Kleiner M. Dietary protein from different sources escapes host digestion and is differentially modified by the microbiota. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.26.600830. [PMID: 38979297 PMCID: PMC11230375 DOI: 10.1101/2024.06.26.600830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
Protein is an essential macronutrient and variations in its source and quantity have been shown to impact long-term health outcomes. Differential health impacts of dietary proteins from various sources are likely driven by differences in their digestibility by the host and subsequent availability to the intestinal microbiota. However, our current understanding regarding the fate of dietary proteins from different sources in the gut, specifically how component proteins within these sources interact with the host and the gut microbiota, is limited. To determine which dietary proteins are efficiently digested by the host and which proteins escape host digestion and are used by the gut microbiota, we used high-resolution mass spectrometry to quantify the proteins that make up different dietary protein sources before and after digestion in germ-free and conventionally raised mice. Contrary to expectation, we detected proteins from all sources in fecal samples of both germ-free and conventional mice suggesting that even protein sources with a high digestive efficiency make it in part to the colon where they can serve as a substrate for the microbiota. Additionally, we found clear patterns where specific component proteins of the dietary protein sources were used as a preferred substrate by the microbiota or were not as accessible to the microbiota. We found that specific proteins with functions that could impact host health and physiology were differentially enriched in germ-free or conventionally raised mice. These findings reveal large differences in the fate of dietary protein from various sources in the gut that could explain some of their differential health impacts.
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Yuasa H, Morino N, Wagatsuma T, Munekane M, Ueda S, Matsunaga M, Uchida Y, Katayama T, Katoh T, Kambe T. ZNT5-6 and ZNT7 play an integral role in protein N-glycosylation by supplying Zn 2+ to Golgi α-mannosidase II. J Biol Chem 2024; 300:107378. [PMID: 38762179 PMCID: PMC11209640 DOI: 10.1016/j.jbc.2024.107378] [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: 02/19/2024] [Revised: 04/20/2024] [Accepted: 05/07/2024] [Indexed: 05/20/2024] Open
Abstract
The stepwise addition of monosaccharides to N-glycans attached to client proteins to generate a repertoire of mature proteins involves a concerted action of many glycosidases and glycosyltransferases. Here, we report that Golgi α-mannosidase II (GMII), a pivotal enzyme catalyzing the first step in the conversion of hybrid- to complex-type N-glycans, is activated by Zn2+ supplied by the early secretory compartment-resident ZNT5-ZNT6 heterodimers (ZNT5-6) and ZNT7 homodimers (ZNT7). Loss of ZNT5-6 and ZNT7 function results in marked accumulation of hybrid-type and complex/hybrid glycans with concomitant reduction of complex- and high-mannose-type glycans. In cells lacking the ZNT5-6 and ZNT7 functions, the GMII activity is substantially decreased. In contrast, the activity of its homolog, lysosomal mannosidase (LAMAN), is not decreased. Moreover, we show that the growth of pancreatic cancer MIA PaCa-2 cells lacking ZNT5-6 and ZNT7 is significantly decreased in a nude mouse xenograft model. Our results indicate the integral roles of ZNT5-6 and ZNT7 in N-glycosylation and highlight their potential as novel target proteins for cancer therapy.
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Affiliation(s)
- Hana Yuasa
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Naho Morino
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Takumi Wagatsuma
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Masayuki Munekane
- Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Sachiko Ueda
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Mayu Matsunaga
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Yasuo Uchida
- Department of Molecular Systems Pharmaceutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima City, Japan
| | - Takane Katayama
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Toshihiko Katoh
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Taiho Kambe
- Division of Integrated Life Science, Graduate School of Biostudies, Kyoto University, Kyoto, Japan.
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Takada H, Katayama T, Katoh T. Cultivation of Microorganisms in Media Supplemented with Mucin Glycoproteins. Methods Mol Biol 2024; 2763:331-335. [PMID: 38347422 DOI: 10.1007/978-1-0716-3670-1_27] [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] [Indexed: 02/15/2024]
Abstract
To examine the mucin-utilizing capacity of bacterial isolates from fecal samples, an in vitro cultivation method using mucins as a carbon source should be considered. This chapter describes a practical method for cultivating bacteria in media containing mucin glycoproteins; for this cultivation method, several factors are considered due to the physical nature of mucin glycoproteins.
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Affiliation(s)
- Hiromi Takada
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Takane Katayama
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
| | - Toshihiko Katoh
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan.
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Takada H, Katoh T, Sakanaka M, Odamaki T, Katayama T. GH20 and GH84 β-N-acetylglucosaminidases with different linkage specificities underpin mucin O-glycan breakdown capability of Bifidobacterium bifidum. J Biol Chem 2023:104781. [PMID: 37146969 DOI: 10.1016/j.jbc.2023.104781] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 04/28/2023] [Accepted: 04/29/2023] [Indexed: 05/07/2023] Open
Abstract
Intestinal mucus layers mediate symbiosis and dysbiosis of host-microbe interactions. These interactions are influenced by the mucin O-glycan degrading ability of several gut microbes. The identities and prevalence of many glycoside hydrolyses (GHs) involved in microbial mucin O-glycan breakdown have been previously reported; however, the exact mechanisms and extent to which these GHs are dedicated to mucin O-glycan degradation pathways warrant further research. Here, using Bifidobacterium bifidum as a model mucinolytic bacterium, we revealed that two β-N-acetylglucosaminidases belonging to the GH20 (BbhI) and GH84 (BbhIV) families play important roles in mucin O-glycan degradation. Using substrate specificity analysis of natural oligosaccharides and O-glycomic analysis of porcine gastric mucin (PGM) incubated with purified enzymes or B. bifidum carrying bbhI and/or bbhIV mutations, we showed that BbhI and BbhIV are highly specific for β-(1→3)- and β-(1→6)-GlcNAc linkages of mucin core structures, respectively. Interestingly, we found that efficient hydrolysis of the β-(1→3)-linkage by BbhI of the mucin core 4 structure [GlcNAcβ1-3(GlcNAcβ1-6)GalNAcα-O-Thr] required prior removal of the β-(1→6)-GlcNAc linkage by BbhIV. Consistent with this, inactivation of bbhIV markedly decreased the ability of B. bifidum to release GlcNAc from PGM. When combined with a bbhI mutation, we observed that the growth of the strain on PGM was reduced. Finally, phylogenetic analysis suggests that GH84 members may have gained diversified functions through microbe-microbe and host-microbe horizontal gene transfer events. Taken together, these data strongly suggest GH84 family members in host glycan breakdown.
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Affiliation(s)
- Hiromi Takada
- Graduate School of Biostudies, Kyoto University, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Toshihiko Katoh
- Graduate School of Biostudies, Kyoto University, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Mikiyasu Sakanaka
- Graduate School of Biostudies, Kyoto University, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Toshitaka Odamaki
- Graduate School of Biostudies, Kyoto University, Sakyo-Ku, Kyoto 606-8502, Japan; Next Generation Science Institute, Morinaga Milk Industry Co. Ltd., Zama, Kanagawa 252-8583, Japan
| | - Takane Katayama
- Graduate School of Biostudies, Kyoto University, Sakyo-Ku, Kyoto 606-8502, Japan.
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5
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Zheng J, Cheng Y, Bao M, Li Z, Lü X, Shan Y. Ultrasound improves the thermal stability and binding capacity of ovomucin by promoting the dissociation of insoluble ovomucin aggregates. Int J Biol Macromol 2023; 228:478-486. [PMID: 36577472 DOI: 10.1016/j.ijbiomac.2022.12.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/11/2022] [Accepted: 12/21/2022] [Indexed: 12/26/2022]
Abstract
Ovomucin (OVM) is a natural glycoprotein with various biological activities but poor solubility. This study aimed to enhance the solubility of OVM by using an ultrasonic-assisted method. The effect of ultrasound (US) on the structure, thermal stability and biological functions of OVM aggregates was evaluated. It was found that insoluble OVM aggregates were dissociated and the solubility increased significantly to 90.0 % after US under 400 W for 45 min. US also improved the onset temperature (To) and denaturation temperature (Td) of OVM. More importantly, the cholesterol binding capacity of both OVM and its digestion products were significantly improved after US (p < 0.05). The gastrointestinal digestion products of US-OVM also showed higher α-amylase and α-glucosidase inhibition than native OVM aggregates. US-induced dissociation of OVM aggregates and the conversion of β-sheet and β-turn to random coil, resulting in the exposure of hydrophobic binding sites may be an important reason for the enhanced stability and adsorption capacity. These findings suggested that US was an effective method for preparing soluble OVM and improved its adsorption capacity, which can further facilitate the application of OVM in the food industry.
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Affiliation(s)
- Jiaqi Zheng
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Yujia Cheng
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Miaomiao Bao
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Zhirong Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Yuanyuan Shan
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China.
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6
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Egg Freshness Indexes Correlations with Ovomucin Concentration during Storage. J FOOD QUALITY 2022. [DOI: 10.1155/2022/9562886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The relationship between protein changes and egg quality during storage is a critical area of investigation in both basic science and egg product preservation. Viscosity changes in albumen are a sensitive sign of the deterioration process. Ovomucin, which is present in albumen, plays an important role in the gelation of the albumen. Egg freshness indices and ovomucin concentration will alter in response to storage time. This paper analyzed the correlation and gray relational degree between the Haugh unit (HU), yolk index, albumen pH, and ovomucin concentration. We studied the differences in the ovomucin concentration at different levels of HU, yolk index, and pH during storage. We established an equivalent egg age prediction model using ovomucin concentration as the independent variable. The findings indicated a correlation between the freshness indices and the ovomucin concentration. There was a good, significantly positive relationship between HU and ovomucin concentration (r = 0.713,
), a positive correlation between the yolk index and ovomucin concentration (r = 0.699,
), and a negative correlation between albumen pH and ovomucin concentration (r = −0.683,
). The highest Pearson correlation coefficient (r = 0.970,
) was obtained between the albumen and ovomucin concentration. Significant differences in ovomucin concentration were observed when HU, yolk index, and pH were varied. The gray relational degree between each freshness parameter and ovomucin concentration was greater than 0.8. Between the HU and ovomucin concentration, there was a gray correlation degree of 0.885, indicating that the HU was the primary factor affecting ovomucin concentration variation during storage. During storage, at 22°C, the ovomucin concentration in albumen was significantly and negatively related to storage time (r = −0.926,
). The coefficient of determination for the equivalent egg age prediction model with ovomucin concentration as the independent variable was 0.985 (
), indicating strong reliability. The study’s findings show the possibility of nondestructive prediction of an egg’s internal microscopic protein composition using its freshness index value.
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2019-2020. MASS SPECTROMETRY REVIEWS 2022:e21806. [PMID: 36468275 DOI: 10.1002/mas.21806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
This review is the tenth update of the original article published in 1999 on the application of matrix-assisted laser desorption/ionization (MALDI) mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2020. Also included are papers that describe methods appropriate to analysis by MALDI, such as sample preparation techniques, even though the ionization method is not MALDI. The review is basically divided into three sections: (1) general aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, fragmentation, quantification and the use of arrays. (2) Applications to various structural types such as oligo- and polysaccharides, glycoproteins, glycolipids, glycosides and biopharmaceuticals, and (3) other areas such as medicine, industrial processes and glycan synthesis where MALDI is extensively used. Much of the material relating to applications is presented in tabular form. The reported work shows increasing use of incorporation of new techniques such as ion mobility and the enormous impact that MALDI imaging is having. MALDI, although invented nearly 40 years ago is still an ideal technique for carbohydrate analysis and advancements in the technique and range of applications show little sign of diminishing.
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Affiliation(s)
- David J Harvey
- Nuffield Department of Medicine, Target Discovery Institute, University of Oxford, Oxford, UK
- Department of Chemistry, University of Oxford, Oxford, Oxfordshire, United Kingdom
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Gao W, Xiao M, Gu Z, Fu X, Ren X, Yu Y, Liu Z, Zhu C, Kong Q, Mou H. Genome analysis and 2'-fucosyllactose utilization characteristics of a new Akkermansia muciniphila strain isolated from mice feces. Mol Genet Genomics 2022; 297:1515-1528. [PMID: 35948738 DOI: 10.1007/s00438-022-01937-8] [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: 03/14/2022] [Accepted: 07/29/2022] [Indexed: 11/26/2022]
Abstract
Akkermansia muciniphila is considered to be a next-generation probiotic, and closely related to host metabolism and immune response. Compared with other probiotics, little is known about its genomic analysis. Therefore, further researches about isolating more A. muciniphila strains and exploring functional genes are needed. In the present study, a new strain isolated from mice feces was identified as A. muciniphila (MucX). Whole-genome sequencing and annotation revealed that MucX possesses key genes necessary for human milk oligosaccharides (HMO) utilization, including α-L-fucosidases, β-galactosidases, exo-α-sialidases, and β-acetylhexosaminidases. The complete metabolic pathways for γ-aminobutyric acid and squalene and genes encoding functional proteins, such as the outer membrane protein Amuc_1100, were annotated in the MucX genome. Comparative genome analysis was used to identify functional genes unique to MucX compared to six other A. muciniphila strains. Results showed MucX genome possesses unique genes, including sugar transporters and transferases. Single-strain incubation revealed faster utilization of 2'-fucosyllactose (2'-FL), galacto-oligosaccharides, and lactose by MucX than by A. muciniphila DSM 22959. This study isolated and identified an A. muciniphila strain that can utilize 2'-FL, and expolored the genes related to HMO utilization and special metabolites, which provided a theoretical basis for the further excavation of A. muciniphila function and the compound application with fucosylated oligosaccharides.
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Affiliation(s)
- Wei Gao
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Mengshi Xiao
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Ziqiang Gu
- College of Food Science and Engineering, Ocean University of China, 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, Nanchang, 330047, Jiangxi Province, People's Republic of China
| | - Xinmiao Ren
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Ying Yu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Zhemin Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Changliang Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Qing Kong
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China
| | - Haijin Mou
- College of Food Science and Engineering, Ocean University of China, Qingdao, 266003, Shandong Province, People's Republic of China.
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Zheng J, Wang H, Deng Z, Shan Y, Lü X, Zhao X. Structure and biological activities of glycoproteins and their metabolites in maintaining intestinal health. Crit Rev Food Sci Nutr 2021:1-16. [PMID: 34619993 DOI: 10.1080/10408398.2021.1987857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Glycoproteins formed by covalent links between oligosaccharide and polypeptides are abundant in various food sources. They are less sensitivity to gastrointestinal enzymes, and hence many of them undergo fermentation in the colon by microorganisms. Therefore, the confer various health benefits on the intestinal ecosystem. However, the current understanding of the effect of glycoproteins on intestinal microorganisms and gut health is limited. This is probably due to their heterogeneous structures and complex metabolic programming patterns. The structure and biological activities of glycoproteins and their microbial metabolites were summarized in this review. The metabolic pathways activated by intestinal bacteria were then discussed in relation to their potential benefits on gut health. Food-derived glycoproteins and their metabolites improve gut health by regulating the intestinal bacteria and improving intestinal barrier function, thereby amplifying immune response. The data reviewed here show that food-derived glycoproteins are promising candidates for preventing various gastrointestinal diseases. Further studies should explore the interaction mechanisms between intestinal microorganisms and host metabolites.
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Affiliation(s)
- Jiaqi Zheng
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Haotian Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Zhanfei Deng
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Yuanyuan Shan
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Yangling, PR China
| | - Xue Zhao
- Department of Nursing, Shandong College of Traditional Chinese Medicine, Yantai, PR China
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10
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Tu A, Wang XC, Chen H, Jia X, Wang T, Yi Y, Liu B, Xin W, Lü X, Shan Y. Ovomucin Ameliorates Intestinal Barrier and Intestinal Bacteria to Attenuate DSS-Induced Colitis in Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5887-5896. [PMID: 34013725 DOI: 10.1021/acs.jafc.1c00865] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Egg white ovomucin (OVM) is homologically related to MUC2, the key component of colonic mucous layer. This study investigated the effects of orally administered OVM from egg white on the colonic mucosal barrier and the development of colitis using a colitis C57BL/6J mice model. The results showed that daily supplementation of 125 and 250 mg/kg BW of OVM partially relieved the villous destruction and loss of intestinal barrier integrity, and hence decreased the epithelial barrier permeability. The supplementation also reduced the secretion of proinflammatory cytokines TNF-α and IL-6. Besides, OVM administration significantly increased the relative abundance of intestinal beneficial bacteria including Lactobacilli, Faecalibaculum, Ruminococcus, etc. and further upregulated the production of bacterial metabolites such as short-chain fatty acids (SCFAs), which is a direct source of energy for the proliferation of epithelia and goblet cells. In conclusion, OVM from egg white ameliorates colitis by enhancing the intestinal barrier function and abundance of intestinal bacteria, thereby increasing the number of SCFAs.
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Affiliation(s)
- Aobai Tu
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Xiu Chao Wang
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Hongwang Chen
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Xin Jia
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Tao Wang
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Yanglei Yi
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Bianfang Liu
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Wang Xin
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
| | - Yuanyuan Shan
- College of Food Science and Engineering, Northwest A&F University, No. 22 Xinong Road, Yangling, Shannxi 712100, P. R. China
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11
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Potential role of ovomucin and its peptides in modulation of intestinal health: A review. Int J Biol Macromol 2020; 162:385-393. [PMID: 32569696 PMCID: PMC7305749 DOI: 10.1016/j.ijbiomac.2020.06.148] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 06/11/2020] [Accepted: 06/16/2020] [Indexed: 01/06/2023]
Abstract
Intestinal dysfunction, which may cause a series of metabolic diseases, has become a worldwide health problem. In the past few years, studies have shown that consumption of poultry eggs has the potential to prevent a variety of metabolic diseases, and increasing attention has been directed to the bioactive proteins and their peptides in poultry eggs. This review mainly focused on the biological activities of an important egg-derived protein named ovomucin. Ovomucin and its derivatives have good anti-inflammatory, antioxidant, immunity-regulating and other biological functions. These activities may affect the physical, biological and immune barriers associated with intestinal health. This paper reviewed the structure and the structure-activity relationship of ovomucin,the potential role of ovomucin and its derivatives in modulation of intestinal health are also summarized. Finally, the potential applications of ovomucin and its peptides as functional food components to prevent and assist in the pretreatment of intestinal health problems are prospected.
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