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Wang R, Yan B, Yin Y, Wang X, Wu M, Wen T, Qian Y, Wang Y, Huang C, Zhu Y. Polysaccharides extracted from larvae of Lucilia sericata ameliorated ulcerative colitis by regulating the intestinal barrier and gut microbiota. Int J Biol Macromol 2024; 270:132441. [PMID: 38761897 DOI: 10.1016/j.ijbiomac.2024.132441] [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: 03/19/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 05/20/2024]
Abstract
Pest management technology has been a promising bioconversion method for waste resource utilization. Unlike many pests that consume waste, the larvae of Lucilia sericata, also known as maggots, have many outstanding advantages as following: with their strong adaption to environment and not easily infected and exhibiting a medicinal nutritional value. Herein, the potential efficacies of maggot polysaccharides (MP), as well as their underlying mechanisms, were explored in Dextran sulfate sodium (DSS)-induced colitis mice and TNF-α-elicited Caco-2 cells. We extracted two bioactive polysaccharides from maggots, MP-80 and MP-L, whose molecular weights were 4.25 × 103 and 2.28 × 103 g/mol, respectively. MP-80 and MP-L contained nine sugar residues: 1,4-α-Arap, 1,3-β-Galp, 1,4,6-β-Galp, 1,6-α-Glcp, 1-α-Glcp, 1,4-β-Glcp, 1-β-Xylp, 1,2-α-Manp, and 1-β-Manp. We demonstrated that MP-80 and MP-L significantly ameliorated DSS-induced symptoms and histopathological damage. Immuno-analysis revealed that compared with MP-L, MP-80 could better restore intestinal barrier and reduced inflammation by suppressing NLRP3/NF-κB pathways, which might be attributed to its enriched galactose fraction. Moreover, 16S rRNA sequencing revealed that MP-80 and MP-L both improved the dysbiosis and diversity of gut microbiota and acted on multiple microbial functions. Our study sheds new light on the possibility of using maggot polysaccharides as an alternative therapy for colitis.
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Affiliation(s)
- Rong Wang
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210000, Jiangsu, PR China
| | - Bowen Yan
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210000, PR China
| | - Yourui Yin
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210000, Jiangsu, PR China
| | - Xueyuan Wang
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210000, Jiangsu, PR China
| | - Mei Wu
- The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou 225500, Jiangsu, PR China
| | - Tiantian Wen
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210000, Jiangsu, PR China
| | - Yin Qian
- Taizhou Second People's Hospital, Taizhou 225500, Jiangsu, PR China
| | - Yong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical school, Nanjing University, Nanjing 210000, PR China.
| | - Caoxing Huang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210000, PR China.
| | - Yongqiang Zhu
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing 210000, Jiangsu, PR China.
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Chen H, Zhang T, Yan S, Zhang S, Fu Q, Xiong C, Zhou L, Ma X, Wang R, Chen G. Protective effects of the bioactive peptide from maggots against skin flap ischemia‒reperfusion injury in rats. Heliyon 2024; 10:e29874. [PMID: 38694094 PMCID: PMC11058300 DOI: 10.1016/j.heliyon.2024.e29874] [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: 10/31/2023] [Revised: 04/16/2024] [Accepted: 04/16/2024] [Indexed: 05/03/2024] Open
Abstract
Ischemia‒reperfusion (I/R) injury is a frequently observed complication after flap surgery, and it affects skin flap survival and patient prognosis. Currently, there are no proven safe and effective treatment options to treat skin flap I/R injury. Herein, the potential efficacies of the bioactive peptide from maggots (BPM), as well as its underlying mechanisms, were explored in a rat model of skin flap I/R injury and LPS- or H2O2-elicited RAW 264.7 cells. We demonstrated that BPM significantly ameliorated the area of flap survival, and histological changes in skin tissue in vivo. Furthermore, BPM could markedly restore or enhance Nrf2 and HO-1 levels, and suppress the expression of pro-inflammatory cytokines, including TLR4, p-IκB, NFκB p65, p-p65, IL-6, and TNF-α in I/R-injured skin flaps. In addition, BPM treatment exhibited excellent biocompatibility with an adequate safety profile, while it exhibited superior ROS-scavenging ability and the upregulation of antioxidant enzymes in vitro. Mechanistically, the above benefits related to BPM involved the activation of Nrf2/HO-1 and suppression of TLR4/NF-κB pathway. Taken together, this study may provide a scientific basis for the potential therapeutic effect of BPM in the prevention of skin flap I/R injury and other related diseases.
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Affiliation(s)
- Hao Chen
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
| | - Tianqi Zhang
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
| | - Su Yan
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
| | - Shan Zhang
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
| | - Qiuyue Fu
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
| | - Chuchu Xiong
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
| | - Lina Zhou
- Zhangjiagang Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, Jiangsu, PR China
| | - Xiao Ma
- Yixing Hospital of Traditional Chinese Medicine Affiliated to Nanjing University of Chinese Medicine, Yixing, Jiangsu, PR China
| | - Rong Wang
- College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, PR China
| | - Gang Chen
- Department of Plastic Surgery, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, PR China
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Chu L, Zhang S, Wu W, Gong Y, Chen Z, Wen Y, Wang Y, Wang L. Grape seed proanthocyanidin extract alleviates inflammation in experimental colitis mice by inhibiting NF-κB signaling pathway. ENVIRONMENTAL TOXICOLOGY 2024; 39:2572-2582. [PMID: 38205677 DOI: 10.1002/tox.24129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/07/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024]
Abstract
Ulcerative colitis (UC) is a complex inflammatory disease of colorectum that induces abnormal immune responses and severely affects the quality of life of the patients. Grape seed proanthocyanidin extract (GSPE) exerts anti-inflammatory and antioxidant functions in many inflammatory diseases. The objective of this study was to investigate the potential therapeutic effects and underlying mechanisms of GSPE in UC using a dextran sodium sulfate (DSS)-induced mouse UC model and a lipopolysaccharide (LPS)-stimulated RAW264.7 macrophage model. In this study, we found that the GSPE markedly prevented DSS-induced weight loss and colon length shortening in UC mice. Further investigations showed that GSPE significantly attenuated the expression of pro-inflammatory cytokines TNF-α, IL-6, and IL-1β, and elevated the expression of anti-inflammatory cytokine IL-10 in the colon tissues and serum of DSS-induced colitis mice by suppressing NF-κB signaling pathway. Furthermore, LPS-induced inflammation in RAW264.7 cells was also reversed by GSPE. Taken together, our results confirm that GSPE can ameliorate inflammatory response in experimental colitis via inhibiting NF-κB signaling pathway. This study advances the research progress on a potentially effective therapeutic strategy for inflammatory bowel diseases.
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Affiliation(s)
- Lei Chu
- Clinical Laboratory, The People's Hospital of Danyang & Affiliated Danyang Hospital of Nantong University, Danyang, China
| | - Shaoru Zhang
- Clinical Laboratory, The People's Hospital of Danyang & Affiliated Danyang Hospital of Nantong University, Danyang, China
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Weidong Wu
- Clinical Laboratory, The People's Hospital of Danyang & Affiliated Danyang Hospital of Nantong University, Danyang, China
| | - Yuqing Gong
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Zhenshi Chen
- Clinical Laboratory, The People's Hospital of Danyang & Affiliated Danyang Hospital of Nantong University, Danyang, China
| | - Yanting Wen
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Yong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Lihui Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
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Park BM, Jung BG, Lee JA, Lee BJ. Mitigating Effects of Tenebrio molitor Larvae Powder Administration in Mice with Dextran Sodium Sulfate (DSS)- Induced Colitis. Asian Pac J Cancer Prev 2023; 24:1751-1758. [PMID: 37247298 PMCID: PMC10495887 DOI: 10.31557/apjcp.2023.24.5.1751] [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: 01/26/2023] [Accepted: 05/16/2023] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Ulcerative colitis (UC) is an inflammatory bowel disease that affects people worldwide. The causes of UC are diverse, and symptoms include diarrhea, weight loss, anemia, rectal bleeding, and bloody stools. Tenebrio molitor larvae have recently gained attention as edible insects with various physiological and medical effects. Research on the anti-inflammatory effects of ingesting Tenebrio molitor larvae powder (TMLP) is being actively conducted. In this study, TMLP was administered to mice with dextran sodium sulfate (DSS)-induced colitis to investigate its effects in reducing colitis symptoms. METHODS Mice were initially given 3% DSS in water to induce colitis and then feed containing 0%, 2%, or 4% TMLP. Pathologic changes in colon tissues were assessed by histology, and neutrophil levels were measured by myeloperoxidase (MPO) assay. Levels of IL-1β, IL-6, and TNF-α were measured using real-time PCR and ELISA assays, and IκB and NF-kB protein levels were measured by western blotting. RESULT Disease Activity Index (DAI) scores and MPO activity were reduced in TMLP-treated mice, and colon length increased as much as normal mice. Pathologic changes in the colon tissues of DSS-induced mice were attenuated, and the expression of inflammatory cytokine genes IL-1β, IL-6, and TNF-α decreased. Concomitant decreases in the protein expression of IL-1β and IL-6 were confirmed using ELISA. Western blotting revealed that levels of phosphorylated forms of IκB and NF-κB also decreased. CONCLUSION These results show that feeding TMLP to DSS-induced mice inhibited the typical inflammatory pathway of colitis. Therefore, TMLP shows potential as a food additive that can help treat colitis. .
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Affiliation(s)
- Bo Mi Park
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea.
| | - Bock Gie Jung
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea.
- Department of Pulmonary Immunology, University of Texas Health Science Center at Tyler, Tyler, TX 75708-3154, USA.
| | - Jin-A Lee
- Biology Department at Morrissey College of Arts and Sciences, Boston College, Chestnut Hill, MA 02467, USA.
| | - Bong Joo Lee
- College of Veterinary Medicine, Chonnam National University, Gwangju 500-757, Korea.
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Liu L, Deng YQ, Jiao WE, Qiao YL, Tao ZZ, Wang Y, Hua QQ, Chen SM. Maggot extracts promote regulatory T cell differentiation by upregulating Foxp3 in allergic rhinitis. Am J Transl Res 2021; 13:13540-13554. [PMID: 35035695 PMCID: PMC8748152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 10/19/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND AND OBJECTIVE Maggots are the larval stage of Lucilia sericata and have strong antibacterial activity and immunomodulatory effects. The objective of our study was to investigate whether maggot extracts can modulate regulatory T cells (Tregs) and treat allergic rhinitis (AR). METHODS Mice were randomly assigned to five groups (n=6/group): normal, AR, Maggot, AR+ Maggot, and AR+ dexamethasone (DXM). The Total Nasal Symptom Score (TNSS), ovalbumin (OVA)-sIgE titers, histopathological characteristics and Th1-/Th2-/Th17-related cytokine levels were evaluated. The expression of T-bet, GATA3, RORγt and Foxp3 in the spleen and nasal mucosa of mice was detected, and the proportion of differentiated Tregs in the spleen of mice was determined. In addition, the effects of maggot extracts on the expression level of Foxp3 and the differentiation of Tregs in vitro were studied. Histological evaluation of the potential toxicity was also performed. RESULTS Compared with the AR group, the AR+ Maggot group showed reduction in histopathological inflammation, downregulated OVA-sIgE titers, and restoration of the imbalance in cytokine profiles (P<0.05). After treatment with maggot extracts, the proportions of Tregs and Foxp3 expression in the spleen were significantly increased, the expression of GATA3 and RORγt was decreased (P<0.05), and the expression of T-bet showed no significant change (P>0.05). In vitro, maggot extracts promoted the expression of Foxp3 and differentiation of Tregs in a dose- and time-dependent manner (P<0.05). In addition, no obvious organ damage was observed in mice treated with maggot extracts. CONCLUSION Maggot extracts can inhibit the progression of AR by upregulating the level of Foxp3 and promoting the differentiation of Tregs, thus serving as an alternate treatment for AR.
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Affiliation(s)
- Li Liu
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
| | - Yu-Qin Deng
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
| | - Wo-Er Jiao
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
| | - Yue-Long Qiao
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
| | - Ze-Zhang Tao
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
- Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
| | - Yong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing UniversityNanjing 210093, Jiangsu, China
| | - Qing-Quan Hua
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
- Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
| | - Shi-Ming Chen
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
- Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University238 Jie-Fang Road, Wuhan 430060, Hubei, China
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Wang R, Zheng L, Xu Q, Xu L, Wang D, Li J, Lu G, Huang C, Wang Y. Unveiling the structural properties of water-soluble lignin from gramineous biomass by autohydrolysis and its functionality as a bioactivator (anti-inflammatory and antioxidative). Int J Biol Macromol 2021; 191:1087-1095. [PMID: 34600953 DOI: 10.1016/j.ijbiomac.2021.09.124] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/08/2021] [Accepted: 09/18/2021] [Indexed: 12/12/2022]
Abstract
Due to its low molecular weight and abundant functional groups, water-soluble lignin (WSL) is considered as a more potent antioxidant than traditional industrial lignin in biofields. However, few studies have been conducted to evaluate its intracellular and endogenous reactive oxygen species (ROS)-scavenging ability, especially for the intervention of ROS-related disease in vivo. In this work, WSL in bamboo autohydrolysate (WSL-BM) and wheat stalk autohydrolysate (WSL-WS) were isolated and characterized to comparably analyze their bioactivities. The composition analysis and NMR characterization showed that both WSL-BM and WSL-WS contained relatively similar components and substructures, but WSL-BM contained higher contents of phenolic OH groups. Both WSL samples exhibited excellent biocompatibility with the concentration below 50 μg/mL, while WSL-BM exhibited superior ROS-scavenging ability and ROS-related ulcerative colitis treatment potential at same concentration. In addition, WSL-BM also showed better performance in ameliorating inflammation and oxidative stress in RAW 264.7 cells and colitis mice by activating Nrf2 and suppressing NFκB signaling, resulting in an overall improvement in both macroscopic and histological parameters. Overall, these results implied that WSL from gramineous biomass can be used as a novel anti-inflammatory and antioxidative agent in the biomedical field.
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Affiliation(s)
- Rong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, Jiangsu, PR China
| | - Liming Zheng
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Qinmei Xu
- Department of Medical Imaging, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210000, Jiangsu, PR China
| | - Liang Xu
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Daojuan Wang
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Jinyang Li
- The First Affiliated Hospital of Nanjing Medical University, Nanjing 210000, Jiangsu, PR China
| | - Geng Lu
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, Jiangsu, PR China
| | - Caoxing Huang
- Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, PR China.
| | - Yong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, Jiangsu, PR China.
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Unveiling the structural properties of water-soluble lignin from gramineous biomass by autohydrolysis and its functionality as a bioactivator (anti-inflammatory and antioxidative). Int J Biol Macromol 2021. [DOI: 10.1016/j.ijbiomac.2021.09.124
expr 902102837 + 985201983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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Gazi U, Taylan-Ozkan A, Mumcuoglu KY. The effect of Lucilia sericata larval excretion/secretion (ES) products on cellular responses in wound healing. MEDICAL AND VETERINARY ENTOMOLOGY 2021; 35:257-266. [PMID: 33314340 DOI: 10.1111/mve.12497] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/20/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
Chronic wounds are still regarded as a serious public health concern, which are on the increase mainly due to the changes in life styles and aging of the human population. There are different types of chronic wounds, each of which requires slightly different treatment strategies. Nevertheless, wound bed preparation is included in treatment of all types of chronic wounds and involves tissue debridement, inflammation, and infection control, as well as moisture balance and epithelial edge advancement. Maggot therapy (MT) is a form of biological debridement which involves the application of live medical grade Lucilia sericata (Meigen, 1826) (Diptera: Calliphoridae) larvae. Whereas it was initially thought to act mainly through debridement, today MT is known to influence all four overlapping physiological phases of wound repair: homeostasis, inflammation, proliferation, and remodelling/maturing. During MT, medical-grade larvae are applied either freely or enclosed in tea-bag like devices (biobag) inside the wounds, which suggests that larva excretion/secretion (ES) products can facilitate the healing processes directly without the need of direct contact with the larvae. This review summarizes the relevant literature on ES-mediated effects on the cellular responses involved in wound healing.
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Affiliation(s)
- U Gazi
- Department of Medical Microbiology and Clinical Microbiology, Faculty of Medicine, Near East University, Nicosia, Cyprus
| | - A Taylan-Ozkan
- Department of Medical Microbiology and Clinical Microbiology, Faculty of Medicine, Near East University, Nicosia, Cyprus
- Department of Medical Microbiology, Faculty of Medicine, Hitit University, Corum, Turkey
| | - K Y Mumcuoglu
- Parasitology Unit, Department of Microbiology and Molecular Genetics, The Kuvin Center for the Study of Infectious and Tropical Diseases, The Hebrew University-Hadassah Medical School, Jerusalem, Israel
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Wang R, Wang D, Wang H, Wang T, Weng Y, Zhang Y, Luo Y, Lu Y, Wang Y. Therapeutic Targeting of Nrf2 Signaling by Maggot Extracts Ameliorates Inflammation-Associated Intestinal Fibrosis in Chronic DSS-Induced Colitis. Front Immunol 2021; 12:670159. [PMID: 34456904 PMCID: PMC8387595 DOI: 10.3389/fimmu.2021.670159] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 07/27/2021] [Indexed: 12/15/2022] Open
Abstract
Intestinal fibrosis is induced by excessive myofibroblast proliferation and collagen deposition, which has been regarded as a general pathological feature in inflammatory bowel disease (IBD). Therefore, identifying clinical markers and targets to treat and prevent intestinal fibrosis is urgently needed. The traditional Chinese medicine maggot, commonly known as “wu gu chong”, has been shown to reduce oxidative stress and alleviate inflammation in chronic colitis. This study investigated the mechanisms underlying the effects of maggot extract (ME) on inflammation-associated intestinal fibrosis in TGF-β1-stimulated human intestinal fibroblasts (CCD-18Co cells) and dextran sodium sulphate (DSS)-induced chronic colitis murine model. To assess the severity of inflammation and fibrosis, histological and macroscopic evaluation were carried out. The results showed that ME was a significant inhibitor of body weight loss and colon length shortening in mice with chronic colitis. In addition, ME suppressed the intestinal fibrosis by downregulating TGF-β1/SMADs pathway via upregulation of Nrf2 expression at both protein and mRNA levels. ME markedly increased the expression of Nrf2, thus resulting in a higher level of HO-1. After treatment with Nrf2 inhibitor (ML385) or siRNA-Nrf2 for deactivating Nrf2 pathway, the protective effects of ME were abolished both in vitro and in vivo. Moreover, the histopathological results for the major organs of DSS mice treated with ME showed no signs of clinically important abnormalities. Treatment with ME had no effect on the viability of CCD-18Co cells, suggesting its low in vitro cytotoxicity. Furthermore, ME could mediate intestine health by keeping the balance of the gut microbes through the enhancement of beneficial microbes and suppression of pathogenic microbes. In conclusion, this is the first ever report demonstrating that ME ameliorates inflammation-associated intestinal fibrosis by suppressing TGF-β1/SMAD pathway via upregulation of Nrf2 expression. Our findings highlight the potential of Nrf2 as an effective therapeutic target for alleviating intestinal fibrosis.
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Affiliation(s)
- Rong Wang
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Daojuan Wang
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Hongwei Wang
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Tingyu Wang
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Yajing Weng
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Yaling Zhang
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
| | - Yongzheng Luo
- School of Chemistry and Life Sciences, Jinling College, Nanjing University, Nanjing, China
| | - Yadong Lu
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Yong Wang
- State Key Laboratory of Analytacal Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing, China
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Li X, Liu X, Zhang Y, Zhang Y, Liu S, Zhang N, Li Y, Wang D. Protective effect of Gloeostereum incarnatum on ulcerative colitis via modulation of Nrf2/NF‑κB signaling in C57BL/6 mice. Mol Med Rep 2020; 22:3418-3428. [PMID: 32945507 PMCID: PMC7453623 DOI: 10.3892/mmr.2020.11420] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 06/16/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic non-specific inflammatory cell infiltration of the colon is generally considered to be the cause of ulcerative colitis (UC). Gloeostereum incarnatum (GI), a fungus rich in amino acids and fatty acids, exhibits a variety of biological functions. In the present study, GI was identified to contain 15 fatty acids, 17 amino acids and 11 metallic elements. The protective effect of GI against UC was investigated in C57BL/6 mice with UC induced by free drinking 3.5% dextran sulfate sodium (DSS). After a 21-day oral administration, GI prevented weight loss, enhancement of the disease activity index and colonic pathological alterations in mice with UC. GI reduced the levels of pro-inflammatory factors including interleukin (IL)-1β, IL-2, IL-6 and IL-12, tumor necrosis factor α and -β, interferon α and -γ, and pro-oxidative factors including reactive oxygen species and nitric oxide. In addition, it enhanced the levels of immunological factors including immunoglobulin (Ig)A, IgM and IgG, and antioxidative factors including superoxide dismutase and catalase in the serum and/or colon tissues. GI enhanced the expression levels of nuclear factor erythroid 2-related factor 2 (Nrf2) and its downstream proteins and suppressed the phosphorylation of NF-κB signaling in colon tissues. Together, GI was shown to alleviate the physiological and pathological state of DSS-induced UC in mice via its antioxidant and anti-inflammatory functions, which may be associated with its modulation of the activation of Nrf2/NF-κB signaling.
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Affiliation(s)
- Xiao Li
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, Jilin 130118, P.R. China
| | - Xin Liu
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, P.R. China
| | - Yongfeng Zhang
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, P.R. China
| | - Yaqin Zhang
- School of Life Sciences, Jilin University, Changchun, Jilin 130012, P.R. China
| | - Shuyan Liu
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, Jilin 130118, P.R. China
| | - Nan Zhang
- Gastroenterology and Endoscopy Center, The First Bethune Hospital of Jilin University, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yu Li
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, Jilin 130118, P.R. China
| | - Di Wang
- Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi, Jilin Agricultural University, Changchun, Jilin 130118, P.R. China
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11
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Li MY, Luo HJ, Wu X, Liu YH, Gan YX, Xu N, Zhang YM, Zhang SH, Zhou CL, Su ZR, Huang XQ, Zheng XB. Anti-Inflammatory Effects of Huangqin Decoction on Dextran Sulfate Sodium-Induced Ulcerative Colitis in Mice Through Regulation of the Gut Microbiota and Suppression of the Ras-PI3K-Akt-HIF-1α and NF-κB Pathways. Front Pharmacol 2020; 10:1552. [PMID: 32038240 PMCID: PMC6984456 DOI: 10.3389/fphar.2019.01552] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 12/02/2019] [Indexed: 12/19/2022] Open
Abstract
Objective Huangqin decoction (HQD), a classical traditional Chinese medicinal formula, has been commonly used to treat gastrointestinal diseases for thousands of years. We investigated the anti-inflammatory effects and underlying mechanisms of HQD on dextran sulfate sodium (DSS)-induced ulcerative colitis (UC). Methods Experimental mice were given 3% DSS, and HQD (2.275, 4.55, and 9.1 g/kg), or mesalazine (ME, 200 mg/kg) orally for 7 days. Body weight loss, disease activity index (DAI), colon length, histology, and levels of inflammatory cytokines were measured to evaluate the effects of HQD on colitis. The effects of HQD on the Ras-phosphoinositide-3-kinase (PI3K)-Akt-hypoxia inducible factor 1 alpha (HIF-1α) and nuclear factor-kappa B (NF-κB) pathways were evaluated by Western blot analysis. In addition, the gut microbiota was characterized using high-throughput Illumina MiSeq sequencing. Results The results showed that HQD significantly reduced the body weight loss, ameliorated DAI, restored colon length, and improved the intestinal epithelial cell barrier in mice with DSS-induced colitis. The messenger RNA (mRNA) expression levels of inflammatory mediators were decreased following HQD treatment. Furthermore, the Ras-PI3K-Akt-HIF-1α and NF-κB pathways were significantly inhibited by HQD. Finally, treatment with HQD resulted in recovery of gut microbiota diversity. Conclusions HQD ameliorates DSS-induced colitis through regulation of the gut microbiota, and suppression of Ras-PI3K-Akt-HIF-1α and NF-κB pathways. Our results suggested that HQD may be a potential candidate for treatment of UC.
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Affiliation(s)
- Min-Yao Li
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Hui-Juan Luo
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xue Wu
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yu-Hong Liu
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yu-Xuan Gan
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Nan Xu
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yao-Min Zhang
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China.,Dongguan Songshan Lake Yidao TCM Clinic, Dongguan, China
| | - Shu-Hua Zhang
- Graduate School, Guangdong Medical University, Dongguan, China
| | - Chang-Lin Zhou
- Graduate School, Guangdong Medical University, Dongguan, China
| | - Zi-Ren Su
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiao-Qi Huang
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xue-Bao Zheng
- Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China.,Dongguan Songshan Lake Yidao TCM Clinic, Dongguan, China
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12
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Targeting NLRP3 Inflammasome in Inflammatory Bowel Disease: Putting out the Fire of Inflammation. Inflammation 2020; 42:1147-1159. [PMID: 30937839 DOI: 10.1007/s10753-019-01008-y] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Inflammatory bowel disease (IBD) is a group of inflammatory conditions of the colon and small intestine, comprised of ulcerative colitis and Crohn's disease. Among the complicated pathogenic factors of IBD, the overaction of inflammatory and immune reaction serves as an important factor. Inflammasome is a form of innate immunity as well as inflammation. Among all kinds of inflammasomes, the NOD-like receptor family, pyrin domain-containing 3 (NLRP3) inflammasome is the most studied one, and has been revealed to be involved in the pathogenesis and progression of IBD. Here, in this review, the association between the NLRP3 inflammasome and IBD will be discussed. Furthermore, several NLRP3 inflammasome inhibitors which have been demonstrated to be effective in the alleviation of IBD will be described in this review.
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13
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Wang R, Luo Y, Lu Y, Wang D, Wang T, Pu W, Wang Y. Maggot Extracts Alleviate Inflammation and Oxidative Stress in Acute Experimental Colitis via the Activation of Nrf2. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4703253. [PMID: 31827675 PMCID: PMC6885191 DOI: 10.1155/2019/4703253] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/23/2019] [Accepted: 10/14/2019] [Indexed: 12/12/2022]
Abstract
Ulcerative colitis (UC) is a common chronic remitting disease driven through altered immune responses with production of inflammatory cytokines. Oxidant/antioxidant balance is also suggested to be an important factor for the recurrence and progression of UC. Maggots are known as a traditional Chinese medicine also known as "wu gu chong." NF-E2-related factor-2 (Nrf2) transcription factor regulates the oxidative stress response and also represses inflammation. The aim of this study was to investigate the effects of maggot extracts on the amelioration of inflammation and oxidative stress in a mouse model of dextran sulfate sodium- (DSS-) induced colitis and evaluate if the maggot extracts could repress inflammation and oxidative stress using RAW 264.7 macrophages stimulated by lipopolysaccharide (LPS). In the present study, we found that the maggot extracts significantly prevented the loss of body weight and shortening of colon length in UC induced by DSS. Furthermore, DSS-induced expression of proinflammatory cytokines at both mRNA and protein levels in the colon was also attenuated by the maggot extracts. In addition, the maggot extracts could significantly suppress the expression of interleukin- (IL-) 1β, IL-6, TNF-α, NFκB p65, p-IκB, p22-phox, and gp91-phox in LPS-stimulated RAW 264.7 cells and colonic tissues. The maggot extracts increased the level of Nrf2 and prevented the degradation of Nrf2 through downregulating the expression of Keap1, which resulted in augmented levels of HO-1, SOD, and GSH-Px and reduced levels of MPO and MDA. However, after administering an Nrf2 inhibitor (ML385) to block the Nrf2/HO-1 pathway, we failed to observe the protective effects of the maggot extracts in mice with colitis and RAW 264.7 cells. Taken together, our data for the first time confirmed that the maggot extracts ameliorated inflammation and oxidative stress in experimental colitis via modulation of the Nrf2/HO-1 pathway. This study sheds light on the possible development of an effective therapeutic strategy for inflammatory bowel diseases.
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Affiliation(s)
- Rong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, China
| | - Yongzheng Luo
- School of Chemistry and Life Sciences, Nanjing University Jinling College, 210089, China
| | - Yadong Lu
- Neonatal Medical Center, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - Daojuan Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, China
| | - Tingyu Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, China
| | - Wenyuan Pu
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, China
| | - Yong Wang
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, Nanjing 210093, China
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14
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Vargas-Robles H, Castro-Ochoa KF, Citalán-Madrid AF, Schnoor M. Beneficial effects of nutritional supplements on intestinal epithelial barrier functions in experimental colitis models in vivo. World J Gastroenterol 2019; 25:4181-4198. [PMID: 31435172 PMCID: PMC6700707 DOI: 10.3748/wjg.v25.i30.4181] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/12/2019] [Accepted: 07/05/2019] [Indexed: 02/06/2023] Open
Abstract
Acute and chronic colitis affect a huge proportion of the population world-wide. The etiology of colitis cases can be manifold, and diet can significantly affect onset and outcome of colitis. While many forms of acute colitis are easily treatable, chronic forms of colitis such as ulcerative colitis and Crohn's disease (summarized as inflammatory bowel diseases) are multifactorial with poorly understood pathogenesis. Inflammatory bowel diseases are characterized by exacerbated immune responses causing epithelial dysfunction and bacterial translocation. There is no cure and therapies aim at reducing inflammation and restoring intestinal barrier function. Unfortunately, most drugs can have severe side effects. Changes in diet and inclusion of nutritional supplements have been extensively studied in cell culture and animal models, and some supplements have shown promising results in clinical studies. Most of these nutritional supplements including vitamins, fatty acids and phytochemicals reduce oxidative stress and inflammation and have shown beneficial effects during experimental colitis in rodents induced by dextran sulphate sodium or 2,4,6-trinitrobenzene sulfonic acid, which remain the gold standard in pre-clinical colitis research. Here, we summarize the mechanisms through which such nutritional supplements contribute to epithelial barrier stabilization.
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Affiliation(s)
- Hilda Vargas-Robles
- Department for Molecular Biomedicine, Cinvestav-IPN, Mexico City 07360, Mexico
| | | | | | - Michael Schnoor
- Department for Molecular Biomedicine, Cinvestav-IPN, Mexico City 07360, Mexico
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