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Al-Awadhi FH, Kokkaliari S, Ratnayake R, Paul VJ, Luesch H. Isolation and Characterization of the Cyanobacterial Macrolide Glycoside Moorenaside, an Anti-Inflammatory Analogue of Aurisides Targeting the Keap1/Nrf2 Pathway. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 39315953 DOI: 10.1021/acs.jnatprod.4c00420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/25/2024]
Abstract
A new 14-membered ring brominated macrolide glycoside, named moorenaside (1), was discovered from a marine cyanobacterial sample collected from Shands Key in Florida. The structure of 1 was established by analysis of spectroscopic data including its relative configuration. The absolute configuration was inferred from optical rotation data and comparison with related compounds. The structure of 1 features an α,β-unsaturated carbonyl system, which is also found in aurisides. The presence of this motif in 1 prompted us to evaluate its effect on Keap1/Nrf2 signaling, a cytoprotective pathway culminating in the activation of antioxidant genes activated upstream by the cysteine alkylation of Keap1. Moorenaside exhibited moderate ARE luciferase activity at 32 μM. Due to the established crosstalk between Nrf2 and NF-κB pathways, we investigated the anti-inflammatory effects of 1 in LPS-induced mouse macrophages (RAW264.7 cells), a commonly used model for inflammation. Moorenaside significantly upregulated Nqo1 (Nrf2 target gene) and downregulated iNos (NF-κB target gene) at 32 μM by 5.0- and 2.5-fold, respectively, resulting in a significant reduction of nitric oxide (NO) levels. Furthermore, we performed RNA-sequencing and demonstrated the transcriptional activity of 1 on a global level and identified canonical pathways and upstream regulators involved in inflammation, immune response, and certain oxidative-stress-underlying diseases such as multiple sclerosis and chronic kidney disease.
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Affiliation(s)
- Fatma H Al-Awadhi
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, Florida 32610, United States
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait
| | - Sofia Kokkaliari
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, Florida 32610, United States
| | - Ranjala Ratnayake
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, Florida 32610, United States
| | - Valerie J Paul
- Smithsonian Marine Station, Fort Pierce, Florida 34949, United States
| | - Hendrik Luesch
- Department of Medicinal Chemistry and Center for Natural Products, Drug Discovery and Development (CNPD3), University of Florida, Gainesville, Florida 32610, United States
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Li S, Wang Z, Liu G, Chen M. Neurodegenerative diseases and catechins: (-)-epigallocatechin-3-gallate is a modulator of chronic neuroinflammation and oxidative stress. Front Nutr 2024; 11:1425839. [PMID: 39149548 PMCID: PMC11326534 DOI: 10.3389/fnut.2024.1425839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Accepted: 07/11/2024] [Indexed: 08/17/2024] Open
Abstract
Catechins, a class of phytochemicals found in various fruits and tea leaves, have garnered attention for their diverse health-promoting properties, including their potential in combating neurodegenerative diseases. Among these catechins, (-)-epigallocatechin-3-gallate (EGCG), the most abundant polyphenol in green tea, has emerged as a promising therapeutic agent due to its potent antioxidant and anti-inflammatory effects. Chronic neuroinflammation and oxidative stress are key pathological mechanisms in neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD). EGCG has neuroprotective efficacy due to scavenging free radicals, reducing oxidative stress and attenuating neuroinflammatory processes. This review discusses the molecular mechanisms of EGCG's anti-oxidative stress and chronic neuroinflammation, emphasizing its effects on autoimmune responses, neuroimmune system interactions, and focusing on the related effects on AD and PD. By elucidating EGCG's mechanisms of action and its impact on neurodegenerative processes, this review underscores the potential of EGCG as a therapeutic intervention for AD, PD, and possibly other neurodegenerative diseases. Overall, EGCG emerges as a promising natural compound for combating chronic neuroinflammation and oxidative stress, offering novel avenues for neuroprotective strategies in the treatment of neurodegenerative disorders.
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Affiliation(s)
- Siying Li
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
- Department of Neurology, The Yuhuan People's Hospital, Taizhou, Zhejiang, China
| | - Zaoyi Wang
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Gang Liu
- Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, China
| | - Meixia Chen
- Department of Neurology, The Yuhuan People's Hospital, Taizhou, Zhejiang, China
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Ge J, Li M, Yao J, Guo J, Li X, Li G, Han X, Li Z, Liu M, Zhao J. The potential of EGCG in modulating the oral-gut axis microbiota for treating inflammatory bowel disease. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155643. [PMID: 38820660 DOI: 10.1016/j.phymed.2024.155643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 04/07/2024] [Accepted: 04/13/2024] [Indexed: 06/02/2024]
Abstract
Inflammatory bowel disease (IBD) is a recurrent chronic intestinal disorder that includes ulcerative colitis (UC) and Crohn's disease (CD). Its pathogenesis involves intricate interactions between pathogenic microorganisms, native intestinal microorganisms, and the intestinal immune system via the oral-gut axis. The strong correlation observed between oral diseases and IBD indicates the potential involvement of oral pathogenic microorganisms in IBD development. Consequently, therapeutic strategies targeting the proliferation, translocation, intestinal colonization and exacerbated intestinal inflammation of oral microorganisms within the oral-gut axis may partially alleviate IBD. Tea consumption has been identified as a contributing factor in reducing IBD, with epigallocatechin gallate (EGCG) being the primary bioactive compound used for IBD treatment. However, the precise mechanism by which EGCG mediates microbial crosstalk within the oral-gut axis remains unclear. In this review, we provide a comprehensive overview of the diverse oral microorganisms implicated in the pathogenesis of IBD and elucidate their colonization pathways and mechanisms. Subsequently, we investigated the antibacterial properties of EGCG and its potential to attenuate microbial translocation and colonization in the gut, emphasizing its role in attenuating exacerbations of IBD. We also elucidated the toxic and side effects of EGCG. Finally, we discuss current strategies for enhancing EGCG bioavailability and propose novel multi-targeted nano-delivery systems for the more efficacious management of IBD. This review elucidates the role and feasibility of EGCG-mediated modulation of the oral-gut axis microbiota in the management of IBD, contributing to a better understanding of the mechanism of action of EGCG in the treatment of IBD and the development of prospective treatment strategies.
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Affiliation(s)
- Jiaming Ge
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Mengyuan Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jingwen Yao
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jinling Guo
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiankuan Li
- Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Gang Li
- State Key Laboratory of Precision Measurement Technology and Instruments, Tianjin University, Tianjin 300072, China
| | - Xiangli Han
- Department of Geriatric, Fourth Teaching Hospital of Tianjin University of TCM, Tianjin 300450, China
| | - Zheng Li
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent and Green Pharmaceuticals for Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Ming Liu
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, 236 Baidi Road, Nankai District, Tianjin 300192, China.
| | - Jing Zhao
- College of Pharmaceutical Engineering of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent TCM Diagnosis and Treatment Technology and Equipment, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; Tianjin Key Laboratory of Intelligent and Green Pharmaceuticals for Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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Shaikh TB, Chandra Y, Andugulapati SB, Sistla R. Vistusertib improves pulmonary inflammation and fibrosis by modulating inflammatory/oxidative stress mediators via suppressing the mTOR signalling. Inflamm Res 2024; 73:1223-1237. [PMID: 38789791 DOI: 10.1007/s00011-024-01894-5] [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: 03/25/2024] [Revised: 05/06/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
INTRODUCTION Inflammation and oxidative stress are key factors in the development of pulmonary fibrosis (PF) by promoting the differentiation of fibroblasts through modulating various pathways including Wnt/β-catenin, TGF-β and mTOR signalling. OBJECTIVE AND METHODS This study aimed to evaluate the effects and elucidate the mechanisms of vistusertib (VSB) in treating pulmonary inflammation/fibrosis, specifically by targeting the mTOR pathway using various in vitro and in vivo models. RESULTS Lipopolysaccharide (LPS)-induced inflammation model in macrophages (RAW 264.7), epithelial (BEAS-2B) and endothelial (HMVEC-L) cells revealed that treatment with VSB significantly reduced the IL-6, TNF-α, CCL2, and CCL7 expression. TGF-β induced differentiation was also significantly reduced upon VSB treatment in fibrotic cells (LL29 and DHLF). Further, bleomycin-induced inflammation and fibrosis models demonstrated that treatment with VSB significantly ameliorated the severe inflammation, and lung architectural distortion, by reducing the inflammatory markers expression/levels, inflammatory cells and oxidative stress indicators. Further, fibrosis model results exhibited that, VSB treatment significantly reduced the α-SMA, collagen and TGF-β expressions, improved the lung architecture and restored lung functions. CONCLUSION Overall, this study uncovers the anti-inflammatory/anti-fibrotic effects of VSB by modulating the mTOR activation. Although VSB was tested for lung fibrosis, it can be tested for other fibrotic disorders to improve the patient's survival and quality of life.
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Affiliation(s)
- Taslim B Shaikh
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, 500 007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India
| | - Yogesh Chandra
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, 500 007, India
| | - Sai Balaji Andugulapati
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, 500 007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India.
| | - Ramakrishna Sistla
- Division of Applied Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana, 500 007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201 002, India.
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Zeng M, Hodges JK, Pokala A, Khalafi M, Sasaki GY, Pierson J, Cao S, Brock G, Yu Z, Zhu J, Vodovotz Y, Bruno RS. A green tea extract confection decreases circulating endotoxin and fasting glucose by improving gut barrier function but without affecting systemic inflammation: A double-blind, placebo-controlled randomized trial in healthy adults and adults with metabolic syndrome. Nutr Res 2024; 124:94-110. [PMID: 38430822 DOI: 10.1016/j.nutres.2024.02.001] [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: 11/28/2023] [Revised: 01/11/2024] [Accepted: 02/01/2024] [Indexed: 03/05/2024]
Abstract
Anti-inflammatory activities of catechin-rich green tea extract (GTE) in obese rodents protect against metabolic endotoxemia by decreasing intestinal permeability and absorption of gut-derived endotoxin. However, translation to human health has not been established. We hypothesized that GTE would reduce endotoxemia by decreasing gut permeability and intestinal and systemic inflammation in persons with metabolic syndrome (MetS) compared with healthy persons. A randomized, double-blind, placebo-controlled, crossover trial in healthy adults (n = 19, 34 ± 2 years) and adults with MetS (n = 21, 40 ± 3 years) examined 4-week administration of a decaffeinated GTE confection (890 mg/d total catechins) on serum endotoxin, intestinal permeability, gut and systemic inflammation, and cardiometabolic parameters. Compared with the placebo, the GTE confection decreased serum endotoxin (P = .023) in both healthy persons and those with MetS, while increasing concentrations of circulating catechins (P < .0001) and γ-valerolactones (P = .0001). Fecal calprotectin (P = .029) and myeloperoxidase (P = .048) concentrations were decreased by GTE regardless of health status. Following the ingestion of gut permeability probes, urinary lactose/mannitol (P = .043) but not sucralose/erythritol (P > .05) was decreased by GTE regardless of health status. No between-treatment differences (P > .05) were observed for plasma aminotransferases, blood pressure, plasma lipids, or body mass nor were plasma tumor necrosis factor-α, interleukin-6, or the ratio of lipopolysaccharide-binding protein/soluble cluster of differentiation-14 affected. However, fasting glucose in both study groups was decreased (P = .029) by the GTE confection compared with within-treatment arm baseline concentrations. These findings demonstrate that catechin-rich GTE is effective to decrease circulating endotoxin and improve glycemic control in healthy adults and those with MetS, likely by reducing gut inflammation and small intestinal permeability but without affecting systemic inflammation.
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Affiliation(s)
- Min Zeng
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Joanna K Hodges
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA; Department of Nutritional Sciences, The Pennsylvania State University, State College, PA, 16801, USA
| | - Avinash Pokala
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Mona Khalafi
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Geoffrey Y Sasaki
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Jillian Pierson
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Sisi Cao
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Guy Brock
- Department of Biomedical Informatics, The Ohio State University, Columbus, OH, 43210, USA
| | - Zhongtang Yu
- Department of Animal Sciences, The Ohio State University, Columbus, OH, 43210, USA
| | - Jiangjiang Zhu
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Yael Vodovotz
- Department of Food Science and Technology, The Ohio State University, Columbus, OH, 43210, USA
| | - Richard S Bruno
- Human Nutrition Program, The Ohio State University, Columbus, OH, 43210, USA.
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Wang Y, Hu Y, Niu Z, Zhang X, Fan D, Ji X, Lv H, Wang S, Zhao Y. Immunomodulation of nutritional formula containing epigallocatechin-3-gallate, ginseng extract, and polydextrose on inflammation and macrophage polarization. Front Nutr 2024; 11:1370608. [PMID: 38445210 PMCID: PMC10912162 DOI: 10.3389/fnut.2024.1370608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 02/05/2024] [Indexed: 03/07/2024] Open
Abstract
Single nutrient likes polyphenol or dietary fiber have been exhaustively investigated to validate their positive intervention in health or disease. Meanwhile, the common interaction of inner systems with the nutrient complex has not been well elucidated, which raises the scientific issue of the modulatory effect of the nutrient complex on immunity. The representative prebiotics of epigallocatechin-3-gallate (EGCG), ginseng extract, and polydextrose (PDX) were selected on behalf of the classification of polyphenol, flavone or polysaccharides, and dietary fiber to generally cover the daily food intake in this study to explore their intervention in inflammation and macrophage polarization. The intervention of selected nutrients on inflammation and macrophage polarization has been evaluated against macrophages to unveil their comprehensive effects. The synergistic effect of selected nutrients was demonstrated by inhibiting M1 macrophage polarization and the promotion of M2 macrophage polarization. Then, the nutrient formula was set up to verify the intervention effect, and the results revealed the significant inhibition of cell inflammation and the effect on cell proliferation through promoting the cell cycle in the G2 phase. The nutrient complex could inhibit M1 macrophage polarization to inhibit M1-mediated inflammation and promote M2 macrophages for anti-inflammatory effect and enhance cell phagocytosis. Moreover, the varied intervention effects of the nutrient complex with different formulas could be summarized. In general, the formula containing EGCG, ginseng extract, and PDX was demonstrated to possess an enhanced immunomodulatory effect on cell inflammation and macrophage polarization, which could potentially inspire the investigation of complex nutrients in health and diseases.
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Affiliation(s)
- Yi Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Yaozhong Hu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Zhenhua Niu
- Shanghai M-Action Health Technology Co., Ltd., Shanghai, China
| | - Xuejiao Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Dancai Fan
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Xuemeng Ji
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Huan Lv
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Yanrong Zhao
- Shanghai M-Action Health Technology Co., Ltd., Shanghai, China
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Martins-Gomes C, Nunes FM, Silva AM. Natural Products as Dietary Agents for the Prevention and Mitigation of Oxidative Damage and Inflammation in the Intestinal Barrier. Antioxidants (Basel) 2024; 13:65. [PMID: 38247489 PMCID: PMC10812469 DOI: 10.3390/antiox13010065] [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: 12/07/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 01/23/2024] Open
Abstract
Food intake is a basic need to sustain life, but foodborne pathogens and food-related xenobiotics are also the main health concerns regarding intestinal barrier homeostasis. With a predominant role in the well-being of the entire human body, intestinal barrier homeostasis is strictly regulated by epithelial and immune cells. These cells are also the main intervenients in oxidative stress and inflammation-related diseases in the intestinal tract, triggered, for example, by genetic/epigenetic factors, food additives, pesticides, drugs, pathogens, and their metabolites. Nevertheless, the human diet can also be seen as a solution for the problem, mainly via the inclusion of functional foods or nutraceuticals that may act as antioxidant/anti-inflammatory agents to prevent and mitigate acute and chronic oxidative damage and inflammation. A literature analysis of recent advances in this topic highlights the significant role of Nrf2 (nuclear factor erythroid 2-related factor 2) and NF-kB (nuclear factor kappa-light-chain-enhancer of activated B cells) pathways in these biological processes, with many natural products and phytochemicals targeting endogenous antioxidant systems and cytokine production and balance. In this review, we summarized and discussed studies using in vitro and in vivo models of the intestinal tract used to reproduce oxidative damage and inflammatory events, as well as the role of natural products as modulators of Nrf2 and NK-kB pathways.
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Affiliation(s)
- Carlos Martins-Gomes
- Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Cell Biology and Biochemistry Laboratory, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
- Chemistry Research Centre-Vila Real (CQ-VR), Food and Wine Chemistry Laboratory, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal;
| | - Fernando M. Nunes
- Chemistry Research Centre-Vila Real (CQ-VR), Food and Wine Chemistry Laboratory, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal;
- Department of Chemistry, School of Life Sciences and Environment, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
| | - Amélia M. Silva
- Centre for Research and Technology of Agro-Environmental and Biological Sciences (CITAB), Cell Biology and Biochemistry Laboratory, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
- Institute for Innovation, Capacity Building and Sustainability of Agri-food Production (Inov4gro), University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801 Vila Real, Portugal
- Department of Biology and Environment, School of Life Sciences and Environment, University of Trás-os-Montes and Alto Douro (UTAD), 5000-801 Vila Real, Portugal
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Lin H, Li W, Sun R, Xu C, Zhang C, Gao J, Cao W, Qin X, Zhong S, Chen Y. Purification and characterization of a novel immunoregulatory peptide from Sipunculus nudus L. protein. Food Sci Nutr 2023; 11:7779-7790. [PMID: 38107114 PMCID: PMC10724601 DOI: 10.1002/fsn3.3695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 09/04/2023] [Accepted: 09/07/2023] [Indexed: 12/19/2023] Open
Abstract
This study aimed to purify and characterize immunoregulatory peptides from Sipunculus nudus L. and to explore the underlying mechanisms. Ultrafiltration, gel filtration chromatography, and reverse phase high-performance liquid chromatography (RP-HPLC) were used to purify the peptide following enzymatic hydrolysis. Rates of lymphocyte proliferation and phagocytosis as well as nitric oxide (NO) production levels were used as indicators of immunoregulatory activity to screen the fractions. The amino acid sequence of the peptide, designated as SNLP, was identified as Arg-Val-Lys-Gly-Lys-Ile-Leu-Ala-Lys-Arg-Leu-Asn (RVKGKILAKRLN) by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Treatment with the synthetic SNLP increased the proliferation and phagocytosis of RAW 264.7 macrophages and promoted the secretion of tumor necrosis factor-ɑ (TNF-α), interleukin-6 (IL-6), interleukin-1β (IL-1β), and NO levels. The mRNA levels of these cytokines and iNOS were also increased by SNLP. Our results provide preliminary evidence suggesting that SNLP acts as a dual immunomodulatory peptide with immunostimulatory and anti-inflammatory activities. In summary, SNLP derived from Sipunculus nudus L. is a potent immunoregulatory peptide and represents a potential functional food or immunoregulatory drug.
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Affiliation(s)
- Haisheng Lin
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Wan Li
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Ruikun Sun
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Cheng Xu
- Empress TherapeuticsCambridgeMassachusettsUSA
| | - Chaohua Zhang
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Jialong Gao
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Wenhong Cao
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Xiaoming Qin
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Saiyi Zhong
- College of Food Science and TechnologyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Key Laboratory of Aquatic Product Processing and SafetyGuangdong Ocean UniversityZhanjiangChina
- Guangdong Province Engineering Laboratory for Marine Biological ProductsGuangdong Ocean UniversityZhanjiangChina
- Guangdong Provincial Engineering Technology Research Center of Marine FoodGuangdong Ocean UniversityZhanjiangChina
| | - Yibin Chen
- Hainan Semnl Biotechnology Co. Ltd.ChengmaiChina
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