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Teng Y, Li J, Guo J, Yan C, Wang A, Xia X. Alginate oligosaccharide improves 5-fluorouracil-induced intestinal mucositis by enhancing intestinal barrier and modulating intestinal levels of butyrate and isovalerate. Int J Biol Macromol 2024; 276:133699. [PMID: 38972652 DOI: 10.1016/j.ijbiomac.2024.133699] [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: 07/03/2024] [Accepted: 07/04/2024] [Indexed: 07/09/2024]
Abstract
Chemotherapy-induced mucositis (CIM) is the typical side effect of chemotherapy. This study investigates the potential of alginate oligosaccharide (AOS) in ameliorating CIM induced by 5-fluorouracil (5-FU) in a murine model and its underlying mechanisms. AOS effectively mitigated body weight loss and histopathological damage, modulated inflammatory cytokines and attenuated the oxidative stress. AOS restored intestinal barrier integrity through enhancing expression of tight junction proteins via MLCK signaling pathway. AOS alleviated intestinal mucosal damage by inhibiting TLR4/MyD88/NF-κB signaling pathway, downregulating the pro-apoptotic protein Bax and upregulating the anti-apoptotic protein Bcl-2. Moreover, AOS significantly enriched intestinal Akkermansiaceae and increased the production of short-chain fatty acids (SCFAs), most notably butyrate and isovalerate. Pre-treatment with butyrate and isovalerate also alleviated 5-FU-induced CIM. In conclusion, AOS effectively mitigated CIM through strenghthening intestinal barrier, attenuating inflammation, and modulating gut microbiota and intestianl levels of butyrate and isovalerate. These finding indicate that AOS could be potentially utilized as a supplemental strategy for prevention or mitigation of CIM.
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Affiliation(s)
- Yue Teng
- Dalian Jinshiwan Laboratory, Dalian, Liaoning 116034, China; State Key Laboratory of Marine Food Processing and Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, China
| | - Jiahui Li
- Dalian Jinshiwan Laboratory, Dalian, Liaoning 116034, China; State Key Laboratory of Marine Food Processing and Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, China
| | - Jian Guo
- Dalian Jinshiwan Laboratory, Dalian, Liaoning 116034, China; State Key Laboratory of Marine Food Processing and Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, China
| | - Chunhong Yan
- Dalian Jinshiwan Laboratory, Dalian, Liaoning 116034, China; State Key Laboratory of Marine Food Processing and Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, China
| | - Ailing Wang
- Dalian Jinshiwan Laboratory, Dalian, Liaoning 116034, China; State Key Laboratory of Marine Food Processing and Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, China
| | - Xiaodong Xia
- Dalian Jinshiwan Laboratory, Dalian, Liaoning 116034, China; State Key Laboratory of Marine Food Processing and Safety Control, National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning 116034, China.
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He X, Tan T, Yang S, Feng Y, Wen Q. Characterisation of an anticomplement polysaccharide BP-S1 from seeds of Brucea javanica. Nat Prod Res 2024:1-13. [PMID: 38189427 DOI: 10.1080/14786419.2023.2300399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/24/2023] [Indexed: 01/09/2024]
Abstract
Bioactivity-guided purification obtained polysaccharide BP-S1 from seeds of Brucea javanica. The results showed that BP-S1 was a homogenous polysaccharide with molecular weight of 45.7 kDa, mainly composed of arabinose and glucose in the ratio of 1.0:1.0 and the backbone of BP-S1 was deduced to be →3,4)-α-Glup-(1→ with branches of →2)-α-Arap-(1→and α-Arap-(1→, and the possible repetitive units were speculated according to result of methylation and 2D-NMR. Moreover, BP-S1 is a periodic rope-like structure. Functional analysis revealed that BP-S1 inhibited complement activation on the classic and alternative pathways with values of CH50 0.073 ± 0.012 mg/mL and AP50 0.097 ± 0.004 mg/mL, respectively. In mechanism study, using complement component depleted-sera methods indicated that BP-S1 selectively interacted with C3 and C4 components.
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Affiliation(s)
- Xiao He
- Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, P. R. China
| | - Ting Tan
- Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, P. R. China
| | - Shilin Yang
- Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, P. R. China
- State Key Laboratory of Innovative Drug and Efficient Energy- Saving Pharmaceutical Equipment, Nanchang, Jiangxi, China
| | - Yulin Feng
- Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, P. R. China
- State Key Laboratory of Innovative Drug and Efficient Energy- Saving Pharmaceutical Equipment, Nanchang, Jiangxi, China
| | - Quan Wen
- Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, P. R. China
- State Key Laboratory of Innovative Drug and Efficient Energy- Saving Pharmaceutical Equipment, Nanchang, Jiangxi, China
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