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Guo H, Xie W, Ji Z, Wang B, Ren W, Gao W, Yuan B. Oyster Peptides Ameliorate Dextran Sulfate Sodium-Induced Ulcerative Colitis via Modulating the Gut Microbiota and Inhibiting the TLR4/NF-κB Pathway. Nutrients 2024; 16:1591. [PMID: 38892524 PMCID: PMC11175164 DOI: 10.3390/nu16111591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 06/21/2024] Open
Abstract
Ulcerative colitis (UC) is an inflammatory bowel disease with an increasing prevalence year over year, and the medications used to treat patients with UC clinically have severe side effects. Oyster peptides (OPs) have anti-inflammatory and antioxidant properties as functional foods that can alleviate a wide range of inflammatory conditions. However, the application of oyster peptides in ulcerative colitis is not well studied. In this work, an animal model of acute colitis was established using 3% dextran sulfate sodium (DSS), and the impact of OP therapy on colitis in mice was examined. Supplementing with OPs prevented DSS-induced colitis from worsening, reduced the expression of oxidative stress and inflammatory markers, and restored the intestinal barrier damage caused by DSS-induced colitis in mice. The 16S rDNA results showed that the OP treatment improved the gut microbiota structure of the UC mice, including increasing microbial diversity, increasing beneficial bacteria, and decreasing harmful bacteria. In the UC mice, the OP therapy decreased the relative abundance of Family_XIII_AD3011_group and Prevotella_9 and increased the relative abundance of Alistipes. In conclusion, OP treatment can inhibit the TLR4/NF-κB pathway and improve the intestinal microbiota in UC mice, which in turn alleviates DSS-induced colitis, providing a reference for the treatment of clinical UC patients.
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Affiliation(s)
- Haixiang Guo
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
| | - Wenyin Xie
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
| | - Zhonghao Ji
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
- Department of Basic Medicine, Changzhi Medical College, Changzhi 046000, China
| | - Bingbing Wang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
| | - Wenzhi Ren
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
| | - Wei Gao
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
| | - Bao Yuan
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (H.G.); (W.X.); (Z.J.); (B.W.); (W.R.)
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Guo HX, Wang BB, Wu HY, Feng HY, Zhang HY, Gao W, Yuan B. Turtle peptide and its derivative peptide ameliorated DSS-induced ulcerative colitis by inhibiting inflammation and modulating the composition of the gut microbiota. Int Immunopharmacol 2024; 132:112024. [PMID: 38608475 DOI: 10.1016/j.intimp.2024.112024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/13/2024] [Accepted: 04/04/2024] [Indexed: 04/14/2024]
Abstract
Ulcerative colitis (UC) is a recurrent intestinal disease with an increasing incidence worldwide that seriously affects the life of patients. Turtle peptide (TP) is a bioactive peptide extracted from turtles that has anti-inflammatory, antioxidant and anti-aging properties. However, studies investigating the effect of TP on the progression of UC are lacking. The aim of this study was to investigate effects and underlying mechanisms of TP and its derivative peptide GPAGPIGPV (GP-9) in alleviating UC in mice. The results showed that 500 mg/kg TP treatment significantly ameliorated colitis symptoms and oxidative stress in UC mice. TP alleviated intestinal barrier damage in UC mice by promoting mucosal repair and increasing the expression of tight junction proteins (ZO1, occludin and claudin-1). TP also modulated the composition of the gut microbiota by increasing the abundance of the beneficial bacteria Anaerotignum, Prevotellaceae_UCG-001, Alistipes, and Lachno-spiraceae_NK4A136_group and decreasing the abundance of the harmful bacteria Prevotella_9 and Parasutterella. Furthermore, we characterized the peptide composition of TP and found that GP-9 ameliorated the symptoms of dextran sodium sulfate (DSS)-induced colitis in mice by inhibiting the TLR4/NF-κB signaling pathway. In conclusion, TP and its derivative peptides ameliorated DSS-induced ulcerative colitis by inhibiting the expression of inflammatory factors and modulating the composition of the intestinal microbiota; this study provides a theoretical basis for the application of TP and its derivative peptides for their anti-inflammatory activity.
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Affiliation(s)
- Hai-Xiang Guo
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China.
| | - Bing-Bing Wang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China.
| | - Hong-Yu Wu
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China; Jilin Academy of Agricultural Sciences, Jilin 132101, Jilin, China.
| | - Hao-Yuan Feng
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China.
| | - Hong-Yi Zhang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China.
| | - Wei Gao
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China.
| | - Bao Yuan
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, Jilin, China.
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Yu S, Guo H, Ji Z, Zheng Y, Wang B, Chen Q, Tang H, Yuan B. Sea Cucumber Peptides Ameliorate DSS-Induced Ulcerative Colitis: The Role of the Gut Microbiota, the Intestinal Barrier, and Macrophage Polarization. Nutrients 2023; 15:4813. [PMID: 38004208 PMCID: PMC10674221 DOI: 10.3390/nu15224813] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/14/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
The incidence of ulcerative colitis (UC) is increasing annually. There are few treatments for UC patients, and some drugs have serious side effects. Sea cucumber peptide (SCP) has anti-inflammatory, antioxidant and other biological activities, and various sea cucumber species are in pharmaceutical development. However, relevant studies on the effects of SCP on UC progression are still lacking. In this study, a mouse model of acute colitis was induced by 3% dextran sulfate (DSS), and the effect of 500 mg/kg SCP on colitis was investigated. The results showed that SCP can alleviate DSS-induced colon damage and intestinal barrier damage. SCP significantly inhibited the expression of inflammatory factors and oxidative stress in UC mice. SCP reversed the intestinal microbiota dysregulation induced by DSS, inhibited the growth of Sutterella, Prevotella_9 and Escherichia-Shigella harmful bacteria, and increased the abundance of Lachnospiraceae_NK4A136_group. At the same time, SCP treatment significantly inhibited the LPS-induced polarization of M1 macrophages, which may be mediated by two monopeptides, IPGAPGVP and TGPIGPPGSP, via FPR2. In conclusion, SCP can protect against colitis by modulating the intestinal microbiota composition and the intestinal barrier and inhibiting the polarization of M1 macrophages.
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Affiliation(s)
- Song Yu
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
| | - Haixiang Guo
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
| | - Zhonghao Ji
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
- Department of Basic Medicine, Changzhi Medical College, Changzhi 046000, China
| | - Yi Zheng
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
| | - Bingbing Wang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
| | - Qingqing Chen
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
| | - Hongyu Tang
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
| | - Bao Yuan
- Department of Laboratory Animals, College of Animal Sciences, Jilin University, Changchun 130062, China; (S.Y.); (H.G.); (Z.J.); (Y.Z.); (B.W.); (Q.C.)
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