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Kumar V, Narisawa M, Cheng XW. Overview of multifunctional Tregs in cardiovascular disease: From insights into cellular functions to clinical implications. FASEB J 2024; 38:e23786. [PMID: 38979903 DOI: 10.1096/fj.202400839r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/01/2024] [Accepted: 06/21/2024] [Indexed: 07/10/2024]
Abstract
Regulatory T cells (Tregs) are crucial in regulating T-cell-mediated immune responses. Numerous studies have shown that dysfunction or decreased numbers of Tregs may be involved in inflammatory cardiovascular diseases (CVDs) such as atherosclerosis, hypertension, myocardial infarction, myocarditis, cardiomyopathy, valvular heart diseases, heart failure, and abdominal aortic aneurysm. Tregs can help to ameliorate CVDs by suppressing excessive inflammation through various mechanisms, including inhibition of T cells and B cells, inhibition of macrophage-induced inflammation, inhibition of dendritic cells and foam cell formation, and induction of anti-inflammatory macrophages. Enhancing or restoring the immunosuppressive activity of Tregs may thus serve as a fundamental immunotherapy to treat hypertension and CVDs. However, the precise molecular mechanisms underlying the Tregs-induced protection against hypertension and CVDs remain to be investigated. This review focuses on recent advances in our understanding of Tregs subsets and function in CVDs. In addition, we discuss promising strategies for using Tregs through various pharmacological approaches to treat hypertension and CVDs.
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Affiliation(s)
- Vipin Kumar
- Department of Cardiology and Hypertension, Jilin Provincial Key Laboratory of Stress and Cardiovascular Disease, Yanbian University Hospital, Yanji, Jilin, P.R. China
| | - Megumi Narisawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Xian Wu Cheng
- Department of Cardiology and Hypertension, Jilin Provincial Key Laboratory of Stress and Cardiovascular Disease, Yanbian University Hospital, Yanji, Jilin, P.R. China
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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2
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Vatankhah M, Panahizadeh R, Safari A, Ziyabakhsh A, Mohammadi-Ghalehbin B, Soozangar N, Jeddi F. The role of Nrf2 signaling in parasitic diseases and its therapeutic potential. Heliyon 2024; 10:e32459. [PMID: 38988513 PMCID: PMC11233909 DOI: 10.1016/j.heliyon.2024.e32459] [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: 10/17/2023] [Revised: 05/24/2024] [Accepted: 06/04/2024] [Indexed: 07/12/2024] Open
Abstract
In response to invading parasites, one of the principal arms of innate immunity is oxidative stress, caused by reactive oxygen species (ROS). However, oxidative stresses play dual functions in the disease, whereby free radicals promote pathogen removal, but they can also trigger inflammation, resulting in tissue injuries. A growing body of evidence has strongly supported the notion that nuclear factor erythroid 2-related factor 2 (NRF) signaling is one of the main antioxidant pathways to combat this oxidative burst against parasites. Given the important role of NRF2 in oxidative stress, in this review, we investigate the activation mechanism of the NRF2 antioxidant pathway in different parasitic diseases, such as malaria, leishmaniasis, trypanosomiasis, toxoplasmosis, schistosomiasis, entamoebiasis, and trichinosis.
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Affiliation(s)
- Mohammadamin Vatankhah
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
- Students Research Committee, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Reza Panahizadeh
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
- Students Research Committee, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ali Safari
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Alireza Ziyabakhsh
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | | | - Narges Soozangar
- Zoonoses Research Center, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Farhad Jeddi
- Department of Genetics and Pathology, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
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Wang Y, Yang H, Hu J, Jiang Y, Ma W, Gao S, Chen D. Preparation and application of fluorescent monoclonal antibodies recognizing goat CD4 +CD25 + regulatory T cells. Appl Microbiol Biotechnol 2024; 108:327. [PMID: 38717623 PMCID: PMC11078799 DOI: 10.1007/s00253-024-13115-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 03/04/2024] [Accepted: 03/19/2024] [Indexed: 05/12/2024]
Abstract
Regulatory T cells (Tregs) are a subset of T cells participating in a variety of diseases including mycoplasmal pneumonia, contagious ecthyma, and so on. The role of Tregs in goat contagious ecthyma is not completely understood due to the lack of species-specific antibodies. Here, we developed a combination of CD4 and CD25 fluorescence monoclonal antibodies (mAb) to recognize goat Tregs and assessed its utility in flow cytometry, immunofluorescence staining. Using immunofluorescence staining, we found that the frequency of Treg cells was positively correlated with the viral load during orf virus infection. These antibodies could serve as important tools to monitor Tregs during orf virus infection in goats. KEY POINTS: • A combination of fluorescent mAbs (C11 and D12) was prepared for the detection of goat Tregs. • C11 and D12 are effective in flow cytometry, immunofluorescence staining, and C11 has excellent species specificity. • The frequency of Treg cells was positively correlated with the viral load during orf virus infection.
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Affiliation(s)
- Yunpeng Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Haoyue Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Jiajin Hu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yuecai Jiang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Wentao Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.
| | - Shikong Gao
- Shenmu Animal Husbandry Development Center, Shenmu, 719300, Shaanxi, China.
| | - Dekun Chen
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.
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Long SR, Shang WX, Zhang HR, Jiang M, Wang JJ, Liu RD, Wang ZQ, Cui J, Sun H. Trichinella-derived protein ameliorates colitis by altering the gut microbiome and improving intestinal barrier function. Int Immunopharmacol 2024; 127:111320. [PMID: 38064817 DOI: 10.1016/j.intimp.2023.111320] [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: 08/24/2023] [Revised: 10/29/2023] [Accepted: 11/27/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) encompasses Crohn's Disease and Ulcerative Colitis. Reports have highlighted the potential use of helminths or their byproducts as a possible treatment for IBD; however, the mechanisms underlying their ability to modulate inflammation remain incompletely understood. In the present study, we analyze the possible mechanism of a serine protease inhibitor from adult T. spiralis excretion-secretion products (rTsSPI) on the improvement of colitis. METHODS The immune protective effect of rTsSPI was studied by using DSS or Salmonella-induced colitis in female C56BL/6 mice. The effect of rTsSPI on the immune and inflammatory responses, gut microbiota, permeability of colon epithelium and junction proteins was analyzed. RESULTS Treating mice with rTsSPI induced type 2 immunity and significantly attenuated clinical symptoms, macroscopical and histological features of DSS or bacteria-induced colonic inflammation. This was accompanied by decreasing neutrophil recruitment in the colonic lamina propria, and reducing TNF-α mRNA levels in the colon; in contrast, the recruitment of M2 macrophages, the expression level of IL-10 and adhesion molecules increased in the colon tissue. Moreover, treatment with rTsSPI led to an improvement in gut microbiota diversity, as well as an increase in the abundance of the bacterial genera Bifidobacterium and Ruminclostridium 5. CONCLUSIONS Collective findings suggest that pretreatment with rTsSPI can ameliorate colitis in mice by inducing a Th2-type response with M2 macrophages. Data also indicate that immunotherapy with rTsSPI represents an additional strategy to ameliorate inflammatory processes in IBD by enhancing probiotic colonization and maintaining intestinal epithelial barrier function.
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Affiliation(s)
- Shao Rong Long
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Wen Xuan Shang
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Hui Ran Zhang
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Miao Jiang
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jing Jing Wang
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Ruo Dan Liu
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Zhong Quan Wang
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Jing Cui
- Department of Parasitology, Medical College of Zhengzhou University, Zhengzhou, Henan 450001, China.
| | - Hualei Sun
- Department of Nutrition, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China.
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Zhang Y, Hardy LC, Kapita CM, Hall JA, Arbeeva L, Campbell E, Urban JF, Belkaid Y, Nagler CR, Iweala OI. Intestinal Helminth Infection Impairs Oral and Parenteral Vaccine Efficacy. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:389-402. [PMID: 37272847 PMCID: PMC10524302 DOI: 10.4049/jimmunol.2300084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/18/2023] [Indexed: 06/06/2023]
Abstract
The impact of endemic parasitic infection on vaccine efficacy is an important consideration for vaccine development and deployment. We have examined whether intestinal infection with the natural murine helminth Heligmosomoides polygyrus bakeri alters Ag-specific Ab and cellular immune responses to oral and parenteral vaccination in mice. Oral vaccination of mice with a clinically relevant, live, attenuated, recombinant Salmonella vaccine expressing chicken egg OVA (Salmonella-OVA) induced the accumulation of activated, OVA-specific T effector cells rather than OVA-specific regulatory T cells in the GALT. Intestinal helminth infection significantly reduced Th1-skewed Ab responses to oral vaccination with Salmonella-OVA. Activated, adoptively transferred, OVA-specific CD4+ T cells accumulated in draining mesenteric lymph nodes of vaccinated mice, regardless of their helminth infection status. However, helminth infection increased the frequencies of adoptively transferred OVA-specific CD4+ T cells producing IL-4 and IL-10 in the mesenteric lymph node. Ab responses to the oral Salmonella-OVA vaccine were reduced in helminth-free mice adoptively transferred with OVA-specific CD4+ T cells harvested from mice with intestinal helminth infection. Intestinal helminth infection also significantly reduced Th2-skewed Ab responses to parenteral vaccination with OVA adsorbed to alum. These findings suggest that vaccine-specific CD4+ T cells induced in the context of helminth infection retain durable immunomodulatory properties and may promote blunted Ab responses to vaccination. They also underscore the potential need to treat parasitic infection before mass vaccination campaigns in helminth-endemic areas.
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Affiliation(s)
- Yugen Zhang
- Department of Medicine, Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, Chapel Hill, NC, 27599
- Department of Pediatrics, University of North Carolina Food Allergy Initiative, Division of Allergy and Immunology, University of North Carolina School of Medicine, Chapel Hill, NC, 27599
| | - LaKeya C. Hardy
- Department of Medicine, Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, Chapel Hill, NC, 27599
- Department of Pediatrics, University of North Carolina Food Allergy Initiative, Division of Allergy and Immunology, University of North Carolina School of Medicine, Chapel Hill, NC, 27599
| | - Camille M. Kapita
- Department of Medicine, Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, Chapel Hill, NC, 27599
| | - Jason A. Hall
- National Institute of Allergy and Infectious Diseases Microbiome Program and Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, Center for Human Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Liubov Arbeeva
- Department of Medicine, Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, Chapel Hill, NC, 27599
| | - Evelyn Campbell
- Biological Sciences Division, University of Chicago, Chicago, IL, 60637
| | - Joseph F. Urban
- United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Animal Parasitic Diseases Laboratory and Beltsville Human Nutrition Research Center, Diet, Genomics, and Immunology Laboratory, 10300 Baltimore Avenue BLDG 307-C BARC-East, Beltsville, MD, 20705
| | - Yasmine Belkaid
- National Institute of Allergy and Infectious Diseases Microbiome Program and Metaorganism Immunity Section, Laboratory of Host Immunity and Microbiome, Center for Human Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Cathryn R. Nagler
- Biological Sciences Division, University of Chicago, Chicago, IL, 60637
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637
- Center for Immunology and Inflammatory Disease, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Charlestown, MA 02129
| | - Onyinye I. Iweala
- Department of Medicine, Thurston Arthritis Research Center, Division of Rheumatology, Allergy, and Immunology, Chapel Hill, NC, 27599
- Department of Pediatrics, University of North Carolina Food Allergy Initiative, Division of Allergy and Immunology, University of North Carolina School of Medicine, Chapel Hill, NC, 27599
- Center for Immunology and Inflammatory Disease, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Charlestown, MA 02129
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Cheng T, Xu C, Shao J. Updated immunomodulatory roles of gut flora and microRNAs in inflammatory bowel diseases. Clin Exp Med 2023; 23:1015-1031. [PMID: 36385416 PMCID: PMC9668223 DOI: 10.1007/s10238-022-00935-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 10/27/2022] [Indexed: 11/17/2022]
Abstract
Inflammatory bowel disease is a heterogeneous intestinal inflammatory disorder, including ulcerative colitis (UC) and Crohn's disease (CD). Existing studies have shown that the pathogenesis of IBD is closely related to the host's genetic susceptibility, intestinal flora disturbance and mucosal immune abnormalities, etc. It is generally believed that there are complicated interactions between host immunity and intestinal microflora/microRNAs during the occurrence and progression of IBD. Intestinal flora is mainly composed of bacteria, fungi, viruses and helminths. These commensals are highly implicated in the maintenance of intestinal microenvironment homeostasis alone or in combination. MiRNA is an endogenous non-coding small RNA with a length of 20 to 22 nucleotides, which can perform a variety of biological functions by silencing or activating target genes through complementary pairing bonds. A large quantity of miRNAs are involved in intestinal inflammation, mucosal barrier integrity, autophagy, vesicle transportation and other small RNA alterations in IBD circumstance. In this review, the immunomodulatory roles of gut flora and microRNAs are updated in the occurrence and progression of IBD. Meanwhile, the gut flora and microRNA targeted therapeutic strategies as well as other immunomodulatory approaches including TNF-α monoclonal antibodies are also emphasized in the treatment of IBD.
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Affiliation(s)
- Ting Cheng
- Laboratory of Infection and Immunity, College of Integrated Chinese and Western Medicine (College of Life Science), Anhui University of Chinese Medicine, Zhijing Building, 433 Room, 350 Longzihu Road, Xinzhan District, Hefei, 230012, Anhui, People's Republic of China
| | - Chen Xu
- Laboratory of Infection and Immunity, College of Integrated Chinese and Western Medicine (College of Life Science), Anhui University of Chinese Medicine, Zhijing Building, 433 Room, 350 Longzihu Road, Xinzhan District, Hefei, 230012, Anhui, People's Republic of China
| | - Jing Shao
- Laboratory of Infection and Immunity, College of Integrated Chinese and Western Medicine (College of Life Science), Anhui University of Chinese Medicine, Zhijing Building, 433 Room, 350 Longzihu Road, Xinzhan District, Hefei, 230012, Anhui, People's Republic of China.
- Institute of Integrated Traditional Chinese and Western Medicine, Anhui Academy of Chinese Medicine, 350 Longzihu Road, Xinzhan District, Hefei, 230012, Anhui, People's Republic of China.
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Atagozli T, Elliott DE, Ince MN. Helminth Lessons in Inflammatory Bowel Diseases (IBD). Biomedicines 2023; 11:1200. [PMID: 37189818 PMCID: PMC10135676 DOI: 10.3390/biomedicines11041200] [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: 03/20/2023] [Revised: 04/10/2023] [Accepted: 04/11/2023] [Indexed: 05/17/2023] Open
Abstract
Helminths are multicellular invertebrates that colonize the gut of many vertebrate animals including humans. This colonization can result in pathology, which requires treatment. It can also lead to a commensal and possibly even a symbiotic relationship where the helminth and the host benefit from each other's presence. Epidemiological data have linked helminth exposure to protection from immune disorders that include a wide range of diseases, such as allergies, autoimmune illnesses, and idiopathic inflammatory disorders of the gut, which are grouped as inflammatory bowel diseases (IBD). Treatment of moderate to severe IBD involves the use of immune modulators and biologics, which can cause life-threatening complications. In this setting, their safety profile makes helminths or helminth products attractive as novel therapeutic approaches to treat IBD or other immune disorders. Helminths stimulate T helper-2 (Th2) and immune regulatory pathways, which are targeted in IBD treatment. Epidemiological explorations, basic science studies, and clinical research on helminths can lead to the development of safe, potent, and novel therapeutic approaches to prevent or treat IBD in addition to other immune disorders.
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Affiliation(s)
- Tyler Atagozli
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Iowa Carver College of Medicine, Iowa City, IA 52246, USA
| | - David E. Elliott
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Iowa Carver College of Medicine, Iowa City, IA 52246, USA
- Iowa City Veterans Affairs Medical Center, Iowa City, IA 52246, USA
| | - Mirac Nedim Ince
- Department of Internal Medicine, Division of Gastroenterology and Hepatology, University of Iowa Carver College of Medicine, Iowa City, IA 52246, USA
- Iowa City Veterans Affairs Medical Center, Iowa City, IA 52246, USA
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Metformin suppresses LRG1 and TGFβ1/ALK1-induced angiogenesis and protects against ultrastructural changes in rat diabetic nephropathy. Biomed Pharmacother 2023; 158:114128. [PMID: 36525822 DOI: 10.1016/j.biopha.2022.114128] [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: 09/28/2022] [Revised: 12/04/2022] [Accepted: 12/11/2022] [Indexed: 12/15/2022] Open
Abstract
Diabetic nephropathy (DN) has high prevalence and poor prognosis which make it a research priority for scientists. Since metformin, a hypoglycaemic drug, has been found to prolong the survival of mice with DN. This study aims at investigating the molecular mechanisms leading to DN in rats and to explore the role of leucine-rich α-2-glycoprotein-1 (LRG1), activin-like kinase1 (ALK1), and transforming growth factor-β (TGFβ1) in the pathologic alterations seen in DN. The aim was also extended to explore the protective action of metformin against DN in rats and its influence on LRG1and ALK1/TGFβ1 induced renal angiogenesis. 24 male rats were used. Rats were assigned as, the vehicle group, the diabetic control group and diabetic + metformin (100 and 200 mg/kg) groups. Kidney samples were processed for histopathology, immunohistochemistry and biochemical analysis. Bioinformatic analysis of studied proteins was done to determine protein-protein interactions. Metformin reduced serum urea and creatinine significantly, decreased the inflammatory cytokine levels and reduced LRG1, TGFβ1, ALK1 and vascular endothelial growth factor (VEGF) proteins in rat kidneys. Bioinformatic analysis revealed interactions between the studied proteins. Metformin alleviated the histopathological changes observed in the diabetic rats such as the glomerular surface area and increased Bowman's space diameter. Metformin groups showed decreased VEGF immunostaining compared to diabetic group. Metformin shows promising renoprotective effects in diabetic model that was at least partly mediated by downregulation of LRG1 and TGFβ1/ALK1-induced renal angiogenesis. These results further explain the molecular mechanism of metformin in DN management.
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Ali Q, Ma S, Farooq U, Niu J, Li F, Li D, Wang Z, Sun H, Cui Y, Shi Y. Pasture intake protects against commercial diet-induced lipopolysaccharide production facilitated by gut microbiota through activating intestinal alkaline phosphatase enzyme in meat geese. Front Immunol 2022; 13:1041070. [PMID: 36569878 PMCID: PMC9774522 DOI: 10.3389/fimmu.2022.1041070] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022] Open
Abstract
Introduction Diet strongly affects gut microbiota composition, and gut bacteria can influence the intestinal barrier functions and systemic inflammation through metabolic endotoxemia. In-house feeding system (IHF, a low dietary fiber source) may cause altered cecal microbiota composition and inflammatory responses in meat geese via increased endotoxemia (lipopolysaccharides) with reduced intestinal alkaline phosphatase (ALP) production. The effects of artificial pasture grazing system (AGF, a high dietary fiber source) on modulating gut microbiota architecture and gut barrier functions have not been investigated in meat geese. Therefore, this study aimed to investigate whether intestinal ALP could play a critical role in attenuating reactive oxygen species (ROS) generation and ROS facilitating NF-κB pathway-induced systemic inflammation in meat geese. Methods The impacts of IHF and AGF systems on gut microbial composition via 16 sRNA sequencing were assessed in meat geese. The host markers analysis through protein expression of serum and cecal tissues, hematoxylin and eosin (H&E) staining, localization of NF-қB and Nrf2 by immunofluorescence analysis, western blotting analysis of ALP, and quantitative PCR of cecal tissues was evaluated. Results and Discussion In the gut microbiota analysis, meat geese supplemented with pasture showed a significant increase in commensal microbial richness and diversity compared to IHF meat geese demonstrating the antimicrobial, antioxidant, and anti-inflammatory ability of the AGF system. A significant increase in intestinal ALP-induced Nrf2 signaling pathway was confirmed representing LPS dephosphorylation mediated TLR4/MyD88 induced ROS reduction mechanisms in AGF meat geese. Further, the correlation analysis of top 44 host markers with gut microbiota showed that artificial pasture intake protected gut barrier functions via reducing ROS-mediated NF-κB pathway-induced gut permeability, systemic inflammation, and aging phenotypes. In conclusion, the intestinal ALP functions to regulate gut microbial homeostasis and barrier function appear to inhibit pro-inflammatory cytokines by reducing LPS-induced ROS production in AGF meat geese. The AGF system may represent a novel therapy to counteract the chronic inflammatory state leading to low dietary fiber-related diseases in animals.
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Affiliation(s)
- Qasim Ali
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China
| | - Sen Ma
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China,Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Henan Agricultural University, Zhengzhou, Henan, China,Henan Herbage Engineering Technology Research Center, Henan Agricultural University, Zhengzhou, Henan, China
| | - Umar Farooq
- Department of Poultry Science, University of Agriculture Faisalabad, Toba Tek Singh, Pakistan
| | - Jiakuan Niu
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China
| | - Fen Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China
| | - Defeng Li
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China,Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Henan Agricultural University, Zhengzhou, Henan, China,Henan Herbage Engineering Technology Research Center, Henan Agricultural University, Zhengzhou, Henan, China
| | - Zhichang Wang
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China,Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Henan Agricultural University, Zhengzhou, Henan, China,Henan Herbage Engineering Technology Research Center, Henan Agricultural University, Zhengzhou, Henan, China
| | - Hao Sun
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China,Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Henan Agricultural University, Zhengzhou, Henan, China,Henan Herbage Engineering Technology Research Center, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yalei Cui
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China,Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Henan Agricultural University, Zhengzhou, Henan, China,Henan Herbage Engineering Technology Research Center, Henan Agricultural University, Zhengzhou, Henan, China
| | - Yinghua Shi
- Department of Animal Nutrition and Feed Science, College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan, China,Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Henan Agricultural University, Zhengzhou, Henan, China,Henan Herbage Engineering Technology Research Center, Henan Agricultural University, Zhengzhou, Henan, China,*Correspondence: Yinghua Shi,
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10
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Arai T, Lopes F. Potential of human helminth therapy for resolution of inflammatory bowel disease: The future ahead. Exp Parasitol 2021; 232:108189. [PMID: 34848244 DOI: 10.1016/j.exppara.2021.108189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/06/2021] [Accepted: 11/24/2021] [Indexed: 12/23/2022]
Abstract
Inflammatory bowel disease (IBD) is associated with a dysregulated mucosal immune response in the gastrointestinal tract. The number of patients with IBD has increased worldwide, especially in highly industrialized western societies. The population of patients with IBD in North America is forecasted to reach about four million by 2030; meanwhile, there is no definitive therapy for IBD. Current anti-inflammatory, immunosuppressive, or biological treatment may induce and maintain remission, but not all patients respond to these treatments. Recent studies explored parasitic helminths as a novel modality of therapy due to their potent immunoregulatory properties in humans. Research using IBD animal models infected with a helminth or administered helminth-derived products such as excretory-secretory products has been promising, and helminth-microbiota interactions exert their anti-inflammatory effects by modulating the host immunity. Recent studies also indicate that evidence that helminth-derived metabolites may play a role in anticolitic effects. Thus, the helminth shows a potential benefit for treatment against IBD. Here we review the current feasibility of "helminth therapy" from the laboratory for application in IBD management.
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Affiliation(s)
- Toshio Arai
- Institution of Parasitology, McGill University, Quebec, Canada; Department of Gastroenterology, Hashimoto Municipal Hospital, Wakayama, Japan
| | - Fernando Lopes
- Institution of Parasitology, McGill University, Quebec, Canada.
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11
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Gao Z, Xu X, Li Y, Sun K, Yang M, Zhang Q, Wang S, Lin Y, Lou L, Wu A, Liu W, Nie B. Mechanistic Insight into PPARγ and Tregs in Atherosclerotic Immune Inflammation. Front Pharmacol 2021; 12:750078. [PMID: 34658891 PMCID: PMC8511522 DOI: 10.3389/fphar.2021.750078] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/17/2021] [Indexed: 12/19/2022] Open
Abstract
Atherosclerosis (AS) is the main pathological cause of acute cardiovascular and cerebrovascular diseases, such as acute myocardial infarction and cerebral apoplexy. As an immune-mediated inflammatory disease, the pathogenesis of AS involves endothelial cell dysfunction, lipid accumulation, foam cell formation, vascular smooth muscle cell (VSMC) migration, and inflammatory factor infiltration. The nuclear receptor peroxisome proliferator-activated receptor gamma (PPARγ) plays an important role in lipid metabolism, inflammation, and apoptosis by antagonizing the Wnt/β-catenin pathway and regulating cholesterol efflux and inflammatory factors. Importantly, PPARγ-dependant fatty acid uptake is critical for metabolic programming. Activated PPARγ can exert an anti-atherosclerotic effect by inhibiting the expression of various inflammatory factors, improving endothelial cell function, and restraining the proliferation and migration of VSMCs. Regulatory T cells (Tregs) are the only subset of T lymphocytes that have a completely negative regulatory effect on the autoimmune response. They play a critical role in suppressing excessive immune responses and inflammatory reactions and widely affect AS-associated foam cell formation, plaque rupture, and other processes. Recent studies have shown that PPARγ activation promotes the recruitment of Tregs to reduce inflammation, thereby exerting its anti-atherosclerotic effect. In this review, we provide an overview of the anti-AS roles of PPARγ and Tregs by discussing their pathological mechanisms from the perspective of AS and immune-mediated inflammation, with a focus on basic research and clinical trials of their efficacies alone or in combination in inhibiting atherosclerotic inflammation. Additionally, we explore new ideas for AS treatment and plaque stabilization and establish a foundation for the development of natural PPARγ agonists with Treg recruitment capability.
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Affiliation(s)
- Zhao Gao
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China.,Zhanjiang Key Laboratory of Prevention and Management of Chronic Kidney Disease, Institute of Nephrology, Guangdong Medical University, Zhanjiang, China
| | - Xinrui Xu
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China
| | - Yang Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Kehan Sun
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Manfang Yang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Qingyue Zhang
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China
| | - Shuqi Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yiyi Lin
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China
| | - Lixia Lou
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China
| | - Aiming Wu
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China.,Zhanjiang Key Laboratory of Prevention and Management of Chronic Kidney Disease, Institute of Nephrology, Guangdong Medical University, Zhanjiang, China
| | - Bo Nie
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to BeijingUniversity of Chinese Medicine, Beijing, China.,School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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12
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Shute A, Callejas BE, Li S, Wang A, Jayme TS, Ohland C, Lewis IA, Layden BT, Buret AG, McKay DM. Cooperation between host immunity and the gut bacteria is essential for helminth-evoked suppression of colitis. MICROBIOME 2021; 9:186. [PMID: 34517928 PMCID: PMC8438845 DOI: 10.1186/s40168-021-01146-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 07/30/2021] [Indexed: 05/06/2023]
Abstract
BACKGROUND Studies on the inhibition of inflammation by infection with helminth parasites have, until recently, overlooked a key determinant of health: the gut microbiota. Infection with helminths evokes changes in the composition of their host's microbiota: one outcome of which is an altered metabolome (e.g., levels of short-chain fatty acids (SCFAs)) in the gut lumen. The functional implications of helminth-evoked changes in the enteric microbiome (composition and metabolites) are poorly understood and are explored with respect to controlling enteric inflammation. METHODS Antibiotic-treated wild-type, germ-free (GF) and free fatty-acid receptor-2 (ffar2) deficient mice were infected with the tapeworm Hymenolepis diminuta, then challenged with DNBS-colitis and disease severity and gut expression of the il-10 receptor-α and SCFA receptors/transporters assessed 3 days later. Gut bacteria composition was assessed by 16 s rRNA sequencing and SCFAs were measured. Other studies assessed the ability of feces or a bacteria-free fecal filtrate from H. diminuta-infected mice to inhibit colitis. RESULTS Protection against disease by infection with H. diminuta was abrogated by antibiotic treatment and was not observed in GF-mice. Bacterial community profiling revealed an increase in variants belonging to the families Lachnospiraceae and Clostridium cluster XIVa in mice 8 days post-infection with H. diminuta, and the transfer of feces from these mice suppressed DNBS-colitis in GF-mice. Mice treated with a bacteria-free filtrate of feces from H. diminuta-infected mice were protected from DNBS-colitis. Metabolomic analysis revealed increased acetate and butyrate (both or which can reduce colitis) in feces from H. diminuta-infected mice, but not from antibiotic-treated H. diminuta-infected mice. H. diminuta-induced protection against DNBS-colitis was not observed in ffar2-/- mice. Immunologically, anti-il-10 antibodies inhibited the anti-colitic effect of H. diminuta-infection. Analyses of epithelial cell lines, colonoids, and colon segments uncovered reciprocity between butyrate and il-10 in the induction of the il-10-receptor and butyrate transporters. CONCLUSION Having defined a feed-forward signaling loop between il-10 and butyrate following infection with H. diminuta, this study identifies the gut microbiome as a critical component of the anti-colitic effect of this helminth therapy. We suggest that any intention-to-treat with helminth therapy should be based on the characterization of the patient's immunological and microbiological response to the helminth.
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Affiliation(s)
- Adam Shute
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Blanca E Callejas
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - ShuHua Li
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Arthur Wang
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Timothy S Jayme
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Christina Ohland
- International Microbiome Center, Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Ian A Lewis
- Department of Biological Sciences, Faculty of Science, University of Calgary, Calgary, Canada
| | - Brian T Layden
- Division of Endocrinology, Diabetes, and Metabolism, University of Illinois at Chicago, Chicago, IL, USA
- Jesse Brown Veterans Affairs Medical Center, Chicago, IL, USA
| | - André G Buret
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Biological Sciences, Faculty of Science, University of Calgary, Calgary, Canada
| | - Derek M McKay
- Gastrointestinal Research Group, Inflammation Research Network and Host-Parasite Interaction Group, Calvin, Phoebe & Joan Snyder Institute for Chronic Diseases, Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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13
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Jin X, Bai X, Zhao Y, Dong Z, Pang J, Liu M, Liu X. Nrf2 Participates in M2 Polarization by Trichinella spiralis to Alleviate TNBS-Induced Colitis in Mice. Front Immunol 2021; 12:698494. [PMID: 34249002 PMCID: PMC8261282 DOI: 10.3389/fimmu.2021.698494] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/09/2021] [Indexed: 12/26/2022] Open
Abstract
Trichinella spiralis induced alternative activated macrophages (M2), leading to protect against Crohn's disease, known as Th1 -related inflammation, which enhances oxidative stress in the host. However, the relationship of oxidative stress and T. spiralis -mediated immune response is still unknown. In our study, we showed that nuclear factor erythroid 2-related factor-2 (Nrf2), a key transcription factor in antioxidant, participated in M2 polarization induced by T. spiralis muscle larval excretory/secretory (ES) products in vitro. ES -treated M2 were injected intravenously after TNBS challenge and we demonstrated that ES-M could alleviate the severity of the colitis in mice. Adoptive transfer of ES -treated M2 decreased the level of IFN-γ and increased the levels of IL-4 and IL-10 in vivo. However, the capacity of ES -treated Nrf2 KO macrophages to treat colitis was dramatically impaired. ES -treated Nrf2 KO macrophages was insufficient to result in the elevated levels of IL-4 and IL-10. These findings indicate that Nrf2 was required for M2 polarization induced by T. spiralis ES to alleviate colitis in mice.
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Affiliation(s)
- Xuemin Jin
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xue Bai
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ying Zhao
- Department of Nephrology, First Hospital of Jilin University, Changchun, China
| | - Zijian Dong
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jianda Pang
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Mingyuan Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China
| | - Xiaolei Liu
- Key Laboratory of Zoonosis Research, Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun, China
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Expression and function of Smad7 in autoimmune and inflammatory diseases. J Mol Med (Berl) 2021; 99:1209-1220. [PMID: 34059951 PMCID: PMC8367892 DOI: 10.1007/s00109-021-02083-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 04/18/2021] [Accepted: 04/22/2021] [Indexed: 12/22/2022]
Abstract
Transforming growth factor-β (TGF-β) plays a critical role in the pathological processes of various diseases. However, the signaling mechanism of TGF-β in the pathological response remains largely unclear. In this review, we discuss advances in research of Smad7, a member of the I-Smads family and a negative regulator of TGF-β signaling, and mainly review the expression and its function in diseases. Smad7 inhibits the activation of the NF-κB and TGF-β signaling pathways and plays a pivotal role in the prevention and treatment of various diseases. Specifically, Smad7 can not only attenuate growth inhibition, fibrosis, apoptosis, inflammation, and inflammatory T cell differentiation, but also promotes epithelial cells migration or disease development. In this review, we aim to summarize the various biological functions of Smad7 in autoimmune diseases, inflammatory diseases, cancers, and kidney diseases, focusing on the molecular mechanisms of the transcriptional and posttranscriptional regulation of Smad7.
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15
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Lothstein KE, Gause WC. Mining Helminths for Novel Therapeutics. Trends Mol Med 2021; 27:345-364. [PMID: 33495068 PMCID: PMC9884063 DOI: 10.1016/j.molmed.2020.12.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/23/2020] [Accepted: 12/28/2020] [Indexed: 01/31/2023]
Abstract
Helminths are an emerging source of therapeutics for dysregulated inflammatory diseases. Excretory/secretory (ES) molecules, released during infection, are responsible for many of these immunomodulatory effects and are likely to have evolved as a means for parasite survival in the host. While the mechanisms of action of these molecules have not been fully defined, evidence demonstrates that they target various pathways in the immune response, ranging from initiation to effector cell modulation. These molecules are applied in controlling specific effector mechanisms of type 1 and type 2 immune responses. Recently, studies have further focused on their therapeutic potential in specific disease models. Here we review recent findings on ES molecule modulation of immune functions, specifically highlighting their clinical implications for future use in inflammatory disease therapeutics.
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Affiliation(s)
- Katherine E Lothstein
- Center for Immunity and Inflammation, Department of Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ 07103, USA
| | - William C Gause
- Center for Immunity and Inflammation, Department of Medicine, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark, NJ 07103, USA.
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16
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Wiedemann M, Voehringer D. Immunomodulation and Immune Escape Strategies of Gastrointestinal Helminths and Schistosomes. Front Immunol 2020; 11:572865. [PMID: 33042153 PMCID: PMC7527441 DOI: 10.3389/fimmu.2020.572865] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 08/18/2020] [Indexed: 12/13/2022] Open
Abstract
Parasitic worms (helminths) developed various immunoregulatory mechanisms to counteract the immune system of their host. The increasing identification and characterization of helminth-derived factors with strong immune modulatory activity provides novel insights into immune escape strategies of helminths. Such factors might be good targets to enhance anti-helminthic immune responses. In addition, immunosuppressive helminth-derived factors could be useful to develop new therapeutic strategies for treatment of chronic inflammatory conditions. This review will take an in depth look at the effects of immunomodulatory molecules produced by different helminths with a focus on schistosomes and mouse models of hookworm infections.
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Affiliation(s)
- Marie Wiedemann
- Department of Infection Biology, University Hospital Erlangen and Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen, Germany
| | - David Voehringer
- Department of Infection Biology, University Hospital Erlangen and Friedrich-Alexander University Erlangen-Nuremberg (FAU), Erlangen, Germany
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Prophylactic Effect of Lactobacillus plantarum YS4 on Oxazolone-Induced Colitis in BALB/c Mice. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:9048971. [PMID: 32849906 PMCID: PMC7441416 DOI: 10.1155/2020/9048971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 07/14/2020] [Accepted: 07/22/2020] [Indexed: 12/12/2022]
Abstract
In the present research, the effects of Lactobacillus plantarum YS4 (LP-YS4) on colitis were tested in an oxazolone-induced mouse model. BALB/c mice were induced by oxazolone and then treated with LP-YS4. The serum levels of mice were analyzed using commercial kits and the protein and mRNA expression levels of mouse colon tissue were detected by Western blotting and qPCR assay, respectively. The results demonstrated that LP-YS4 significantly (P < 0.05) increased the colon length and ratio of colon weight/length in mice with colitis and attenuated the negative effects of colitis. The results also showed that treatment with LP-YS4 significantly reduced the serum concentrations of ET-1, SP, and IL-10 while significantly increasing those of SS, VIP, and IL-2 in colitis mice (P < 0.05). In addition, LP-YS4 significantly increased the activities of GSH and SOD while decreasing those of MPO and MDA in the colon tissue of colitis mice (P < 0.05). LP-YS4 also significantly upregulated the mRNA and protein expression of c-Kit, eNOS, nNOSe, and SCF in colitis mice while significantly downregulating the relative expression of iNOS. In summary, LP-YS4 could reduce the negative effects of colitis, and such effects were better than those of the common probiotic Lactobacillus bulgaricus.
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18
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Jia L, Wu R, Han N, Fu J, Luo Z, Guo L, Su Y, Du J, Liu Y. Porphyromonas gingivalis and Lactobacillus rhamnosus GG regulate the Th17/Treg balance in colitis via TLR4 and TLR2. Clin Transl Immunology 2020; 9:e1213. [PMID: 33282294 PMCID: PMC7685903 DOI: 10.1002/cti2.1213] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 03/13/2020] [Accepted: 10/21/2020] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVES CD4+ T cells are the key to many immune-inflammatory diseases mediated by microbial disorders, especially inflammatory bowel disease (IBD). The purpose of this study was to explore how pathogenic and probiotic bacteria directly affect the T helper (Th)17 and T regulatory (Treg) cell balance among CD4+ T cells to regulate inflammation. METHODS Porphyromonas gingivalis (Pg; ATCC 33277) and Lactobacillus rhamnosus GG (LGG; CICC 6141) were selected as representative pathogenic and probiotic bacteria, respectively. Bacterial extracts were obtained via ultrasonication and ultracentrifugation. Flow cytometry, RT-qPCR, ELISAs, immunofluorescence and a Quantibody cytokine array were used. The dextran sodium sulphate (DSS)-induced colitis model was selected for verification. RESULTS The Pg ultrasonicate induced the apoptosis of CD4+ T cells and upregulated the expression of the Th17-associated transcription factor RoRγt and the production of the proinflammatory cytokines IL-17 and IL-6, but downregulated the expression of the essential Treg transcription factor Foxp3 and the production of the anti-inflammatory factors TGF-β and IL-10 via the TLR4 pathway. However, LGG extract maintained Th17/Treg homeostasis by decreasing the IL-17+ Th17 proportion and increasing the CD25+ Foxp3+ Treg proportion via the TLR2 pathway. In vivo, Pg-stimulated CD4+ T cells aggravated DSS-induced colitis by increasing the Th17/Treg ratio in the colon and lamina propria lymphocytes (LPLs), and Pg + LGG-stimulated CD4+ T cells relieved colitis by decreasing the Th17/Treg ratio via the JAK-STAT signalling pathway. CONCLUSIONS Our findings suggest that pathogenic Pg and probiotic LGG can directly regulate the Th17/Treg balance via different TLRs.
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Affiliation(s)
- Lu Jia
- Laboratory of Tissue Regeneration and Immunology and Department of PeriodonticsBeijing Key Laboratory of Tooth Regeneration and Function ReconstructionSchool of StomatologyCapital Medical UniversityBeijingChina
| | - Ruiqing Wu
- Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
| | - Nannan Han
- Laboratory of Tissue Regeneration and Immunology and Department of PeriodonticsBeijing Key Laboratory of Tooth Regeneration and Function ReconstructionSchool of StomatologyCapital Medical UniversityBeijingChina
| | - Jingfei Fu
- Laboratory of Tissue Regeneration and Immunology and Department of PeriodonticsBeijing Key Laboratory of Tooth Regeneration and Function ReconstructionSchool of StomatologyCapital Medical UniversityBeijingChina
| | - Zhenhua Luo
- Laboratory of Tissue Regeneration and Immunology and Department of PeriodonticsBeijing Key Laboratory of Tooth Regeneration and Function ReconstructionSchool of StomatologyCapital Medical UniversityBeijingChina
| | - Lijia Guo
- Department of OrthodonticsSchool of StomatologyCapital Medical UniversityBeijingChina
| | - Yingying Su
- Beijing Tiantan HospitalCapital Medical UniversityBeijingChina
| | - Juan Du
- Laboratory of Tissue Regeneration and Immunology and Department of PeriodonticsBeijing Key Laboratory of Tooth Regeneration and Function ReconstructionSchool of StomatologyCapital Medical UniversityBeijingChina
| | - Yi Liu
- Laboratory of Tissue Regeneration and Immunology and Department of PeriodonticsBeijing Key Laboratory of Tooth Regeneration and Function ReconstructionSchool of StomatologyCapital Medical UniversityBeijingChina
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