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Zhang D, Ni QQ, Liang QY, He LL, Qiu BW, Zhang LJ, Mou TY, Le CC, Huang Y, Li TT, Wang SY, Ding YQ, Jiao HL, Ye YP. ASCL2 induces an immune excluded microenvironment by activating cancer-associated fibroblasts in microsatellite stable colorectal cancer. Oncogene 2023; 42:2841-2853. [PMID: 37591954 PMCID: PMC10504082 DOI: 10.1038/s41388-023-02806-3] [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: 11/17/2022] [Revised: 07/28/2023] [Accepted: 08/03/2023] [Indexed: 08/19/2023]
Abstract
Proficient mismatch repair or microsatellite stable (pMMR/MSS) colorectal cancers (CRCs) are vastly outnumbered by deficient mismatch repair or microsatellite instability-high (dMMR/MSI-H) tumors and lack a response to immune checkpoint inhibitors (ICIs). In this study, we reported two distinct expression patterns of ASCL2 in pMMR/MSS and dMMR/MSI-H CRCs. ASCL2 is overexpressed in pMMR/MSS CRCs and maintains a stemness phenotype, accompanied by a lower density of tumor-infiltrating lymphocytes (TILs) than those in dMMR/MSI CRCs. In addition, coadministration of anti-PD-L1 antibodies facilitated T cell infiltration and provoked strong antitumor immunity and tumor regression in the MC38/shASCL2 mouse CRC model. Furthermore, overexpression of ASCL2 was associated with increased TGFB levels, which stimulate local Cancer-associated fibroblasts (CAFs) activation, inducing an immune-excluded microenvironment. Consistently, mice with deletion of Ascl2 specifically in the intestine (Villin-Cre+, Ascl2 flox/flox, named Ascl2 CKO) revealed fewer activated CAFs and higher proportions of infiltrating CD8+ T cells; We further intercrossed Ascl2 CKO with ApcMin/+ model suggesting that Ascl2-deficient expression in intestinal represented an immune infiltrating environment associated with a good prognosis. Together, our findings indicated ASCL2 induces an immune excluded microenvironment by activating CAFs through transcriptionally activating TGFB, and targeting ASCL2 combined with ICIs could present a therapeutic opportunity for MSS CRCs.
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Affiliation(s)
- Dan Zhang
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Qi-Qi Ni
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Qiao-Yan Liang
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Li-Ling He
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Bo-Wen Qiu
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Ling-Jie Zhang
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Ting-Yu Mou
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Chen-Chen Le
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Yuan Huang
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Ting-Ting Li
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Shu-Yang Wang
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China
| | - Yan-Qing Ding
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China.
| | - Hong-Li Jiao
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China.
| | - Ya-Ping Ye
- Department of Pathology, School of Basic Medical Sciences and Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
- Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China.
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Mitra D, Sikdar S, Chakraborty M, Das O, Samanta A, Dutta S. Gum Odina prebiotic prevents experimental colitis in C57BL/6 mice model and its role in shaping gut microbial diversity. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
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Kiselev I, Danilova L, Baulina N, Baturina O, Kabilov M, Boyko A, Kulakova O, Favorova O. Genome-wide DNA methylation profiling identifies epigenetic changes in CD4+ and CD14+ cells of multiple sclerosis patients. Mult Scler Relat Disord 2022; 60:103714. [PMID: 35245816 DOI: 10.1016/j.msard.2022.103714] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/29/2022] [Accepted: 02/24/2022] [Indexed: 10/19/2022]
Abstract
Multiple sclerosis (MS) is a chronic autoimmune and degenerative disease of the central nervous system, which develops in genetically predisposed individuals upon exposure to environmental influences. Environmental triggers of MS, such as viral infections or smoking, were demonstrated to affect DNA methylation, and thus to involve this important epigenetic mechanism in the development of pathological process. To identify MS-associated DNA methylation hallmarks, we performed genome-wide DNA methylation profiling of two cell populations (CD4+ T-lymphocytes and CD14+ monocytes), collected from the same treatment-naive relapsing-remitting MS patients and healthy subjects, using Illumina 450 K methylation arrays. We revealed significant changes in DNA methylation for both cell populations in MS. In CD4+ cells of MS patients the majority of differentially methylated positions (DMPs) were shown to be hypomethylated, while in CD14+ cells - hypermethylated. Differential methylation of HLA-DRB1 gene in CD4+ and CD14+ cells was associated with carriage of DRB1*15 allele independently from the disease status. Besides, about 20% of identified DMPs were shared between two cell populations and had the same direction of methylation changes; they may be involved in basic epigenetic processes occuring in MS. These findings suggest that the epigenetic mechanism of DNA methylation in immune cells contributes to MS; further studies are now required to validate these results and understand their functional significance.
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Affiliation(s)
- Ivan Kiselev
- Department of Molecular Biology and Medical Biotechnology, Pirogov Russian National Research Medical University, Ostrovityanova st. 1, Moscow 117997, Russian Federation
| | - Ludmila Danilova
- Vavilov Institute of General Genetics, Gubkin st. 3, Moscow 119991, Russian Federation; Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Natalia Baulina
- Department of Molecular Biology and Medical Biotechnology, Pirogov Russian National Research Medical University, Ostrovityanova st. 1, Moscow 117997, Russian Federation
| | - Olga Baturina
- Institute of Chemical Biology and Fundamental Medicine, Novosibirsk 630090, Russian Federation
| | - Marsel Kabilov
- Institute of Chemical Biology and Fundamental Medicine, Novosibirsk 630090, Russian Federation
| | - Alexey Boyko
- Department of Molecular Biology and Medical Biotechnology, Pirogov Russian National Research Medical University, Ostrovityanova st. 1, Moscow 117997, Russian Federation
| | - Olga Kulakova
- Department of Molecular Biology and Medical Biotechnology, Pirogov Russian National Research Medical University, Ostrovityanova st. 1, Moscow 117997, Russian Federation
| | - Olga Favorova
- Department of Molecular Biology and Medical Biotechnology, Pirogov Russian National Research Medical University, Ostrovityanova st. 1, Moscow 117997, Russian Federation
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Xu X, Dong Q, Zhong Q, Xiu W, Chen Q, Wang J, Zhou Z. The Flavonoid Kurarinone Regulates Macrophage Functions via Aryl Hydrocarbon Receptor and Alleviates Intestinal Inflammation in Irritable Bowel Syndrome. J Inflamm Res 2021; 14:4347-4359. [PMID: 34539182 PMCID: PMC8446718 DOI: 10.2147/jir.s329091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 08/24/2021] [Indexed: 12/26/2022] Open
Abstract
Background Irritable bowel syndrome (IBS) is characterized with abdominal pain, bloating, and changes in bowel habits, and dealing with IBS is still a clinical challenge. The pathogenesis of IBS has been reported to be linked to low-grade mucosal inflammation, and macrophages contribute to the pathological process of this disease. Kurarinone (KAR), a flavanoid derived from Sophora flavescens, has been found medically effective in many inflammatory conditions and cancers. KAR was previously reported to inhibit LPS-induced expression of inflammatory cytokines in macrophages, whether and how KAR regulates the functions of macrophage in IBS remains to be elusive. Methods We established a TNBS-induced IBS mouse model, in which KAR was administrated, and mucosal cytokine expression was measured by qRT-PCR. Additionally, mouse macrophages were generated in vitro and their responses to LPS were evaluated by flow cytometry and qRT-PCR. AhR+/+ or AhR−/- macrophages were transferred into DTx-treated CD11b-DTR transgenic mice to investigate the role of AhR in IBS. We collected colonic biopsies and peripheral blood samples from 64 patients with IBS, and analyzed AhR expression by qRT-PCR. Results We found KAR effectively alleviated visceral hypersensitivity and maintained intestinal barrier functions in mice with IBS. KAR inhibited LPS-induced macrophage activation and expression of pro-inflammatory genes, while increased anti-inflammatory gene expression including IL-10 in an AhR-dependent manner. Using macrophage-depleted mice, we found that chimera mice with AhR−/- macrophages were more susceptible to TNBS-induced IBS and the therapeutic effect of KAR on IBS was significantly impaired in mice with AhR−/- macrophages. Additionally, we found AhR expression in macrophages of IBS patients was associated with the disease severity. Conclusion Our findings provide new evidences that KAR regulates IBS development via macrophage-intrinsic AhR. KAR might show promise as an immunomodulatory therapeutic agent in treating IBS.
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Affiliation(s)
- Xiang Xu
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Qiwei Dong
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Qingling Zhong
- Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Wenbo Xiu
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China.,Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Qinyuan Chen
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China.,Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Jinxia Wang
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
| | - Zhou Zhou
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China.,Department of Gastroenterology and Hepatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, People's Republic of China
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Duan L, Cheng S, Li L, Liu Y, Wang D, Liu G. Natural Anti-Inflammatory Compounds as Drug Candidates for Inflammatory Bowel Disease. Front Pharmacol 2021; 12:684486. [PMID: 34335253 PMCID: PMC8316996 DOI: 10.3389/fphar.2021.684486] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 07/02/2021] [Indexed: 12/11/2022] Open
Abstract
Inflammatory bowel disease (IBD) represents chronic recurrent intestinal inflammation resulting from various factors. Crohn’s disease (CD) and ulcerative colitis (UC) have been identified as the two major types of IBD. Currently, most of the drugs for IBD used commonly in the clinic have adverse reactions, and only a few drugs present long-lasting treatment effects. Moreover, issues of drug resistance and disease recurrence are frequent and difficult to resolve. Together, these issues cause difficulties in treating patients with IBD. Therefore, the development of novel therapeutic agents for the prevention and treatment of IBD is of significance. In this context, research on natural compounds exhibiting anti-inflammatory activity could be a novel approach to developing effective therapeutic strategies for IBD. Phytochemicals such as astragalus polysaccharide (APS), quercetin, limonin, ginsenoside Rd, luteolin, kaempferol, and icariin are reported to be effective in IBD treatment. In brief, natural compounds with anti-inflammatory activities are considered important candidate drugs for IBD treatment. The present review discusses the potential of certain natural compounds and their synthetic derivatives in the prevention and treatment of IBD.
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Affiliation(s)
- Linshan Duan
- School of Pharmaceutical Sciences Xiamen University, Xiamen, China
| | - Shuyu Cheng
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen, China
| | - Long Li
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, China
| | - Yanling Liu
- School of Pharmaceutical Sciences Xiamen University, Xiamen, China
| | - Dan Wang
- Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen, China
| | - Guoyan Liu
- School of Pharmaceutical Sciences Xiamen University, Xiamen, China.,Institute of Gastrointestinal Oncology, Medical College of Xiamen University, Xiamen, China.,Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen, China
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Xiu W, Chen Q, Wang Z, Wang J, Zhou Z. Microbiota-derived short chain fatty acid promotion of Amphiregulin expression by dendritic cells is regulated by GPR43 and Blimp-1. Biochem Biophys Res Commun 2020; 533:282-288. [PMID: 32958255 DOI: 10.1016/j.bbrc.2020.09.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 09/10/2020] [Indexed: 02/07/2023]
Abstract
Dendritic cells (DC) are the most important antigen-presenting cells, which guide T cell activation and function, and dysregulated DC function might be one of the crucial causes of inflammatory bowel disease (IBD). It has been well-known that microbiota and their metabolites play an essential role in regulating the biology and function of DC, thus contributing to the pathogenesis of IBD. However, the underlying mechanisms remain largely unknown. Amphiregulin (AREG), a molecule of the epidermal growth factor (EGF) family, is primarily described as an epithelial cell-derived cytokine and recognized as a critical regulator of cell proliferation and tissue repair. Here, we found that DC expression of AREG depended on butyrate (a microbiota-derived short chained fatty acid), which required the interaction between butyrate and G-protein-coupled receptor 43 (GPR43). Furthermore, we found that butyrate-GPR43 interaction failed to induce AREG expression in DC deficient in B lymphocyte induced maturation protein 1 (Blimp-1). Notably, DC-derived AREG was indispensable for the protection against experimental colitis in mice. Additionally, AREG expression was significantly decreased in DC from IBD patients. Our data provide novel evidences to interpret how AREG expression is regulated in DC, and shed new light on the mechanisms whereby microbiota regulate DC function.
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Affiliation(s)
- Wenbo Xiu
- Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Qinyuan Chen
- Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Zuo Wang
- Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jinxia Wang
- Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Zhou Zhou
- Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
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Xiu W, Chen Y, Chen Q, Deng B, Su J, Guo Z. Sauchinone attenuates inflammatory responses in dendritic cells via Blimp-1 and ameliorates dextran sulfate sodium (DSS)-induced colitis. Biochem Biophys Res Commun 2020; 527:902-908. [PMID: 32430179 DOI: 10.1016/j.bbrc.2020.05.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 05/04/2020] [Indexed: 12/20/2022]
Abstract
Inflammatory bowel disease (IBD) is a complex inflammatory disorder of the digestive tract with dysregulated innate and adaptive immune responses. Dendritic cells (DC), the most important antigen presenting cells, act as bridges connecting the adaptive and innate immune systems, and play a crucial role in the regulation of local homeostasis in the gut and are also essential mediators in the initiation and development of intestinal inflammation. Our recent study found that sauchinone (SAU) was able to ameliorate experimental colitis in mice by restraining Th17 cell differentiation and their pathogenicity. Here, we found that SAU significantly inhibited LPS-induced DC activation. Moreover, SAU suppressed the ability of LPS-primed DC to induce Th1/Th17 cell differentiation, but SAU-treated DC up-regulated their ability to initiate Foxp3+ Treg cell generation. Of note, we found that genetical ablation of Blimp-1 in DC markedly abrogated the SAU suppression of pro-inflammatory cytokine or promote immunomodulatory molecule production by DC. Blimp-1 deficiency boosted the ability of DC to polarize naïve CD4+ T cells into Th1/Th17 cell lineages. SAU failed to alleviated DSS-induced colitis in mice with Blimp-1-deficient DC. Our results shed new lights on the mechanisms of how SAU regulates DC biology and intestinal inflammation.
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Affiliation(s)
- Wenbo Xiu
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanxi Chen
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Qinyuan Chen
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Bolin Deng
- Department of Ophthalmology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jiang Su
- Department of Rheumatology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Zhenzhen Guo
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China; Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
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Interplay between Cytokine Circuitry and Transcriptional Regulation Shaping Helper T Cell Pathogenicity and Plasticity in Inflammatory Bowel Disease. Int J Mol Sci 2020; 21:ijms21093379. [PMID: 32403220 PMCID: PMC7247009 DOI: 10.3390/ijms21093379] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/07/2020] [Accepted: 05/09/2020] [Indexed: 12/12/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic disorder manifested as Crohn’s disease (CD) and ulcerative colitis (UC) characterized by intestinal inflammation and involves a dysregulated immune response against commensal microbiota through the activation of CD4 T helper cells. T helper cell differentiation to effector or regulatory phenotypes is controlled by cytokine networks and transcriptional regulators. Distinct polarized T helper cells are able to alter their phenotypes to adapt to diverse and fluctuating physiological environments. T helper cells exhibit intrinsic instability and flexibility to express cytokines of other lineages or transdifferentiate from one T helper cell type to another in response to various perturbations from physiological cytokine milieu as a means of promoting local immunity in response to injury or ensure tissue homeostasis. Furthermore, functional plasticity and diversity of T helper cells are associated with pathogenicity and are critical for immune homeostasis and prevention of autoimmunity. In this review, we provide deeper insights into the combinatorial extrinsic and intrinsic signals that control plasticity and transdifferentiation of T helper cells and also highlight the potential of exploiting the genetic reprogramming plasticity of T helper cells in the treatment of IBD.
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Silva EN, Martins TVF, Miyauchi-Tavares TM, Miranda BAE, Dos Santos GDA, Rosa CP, Santos JA, Novaes RD, de Almeida LA, Corsetti PP. Amoxicillin-induced gut dysbiosis influences estrous cycle in mice and cytokine expression in the ovary and the caecum. Am J Reprod Immunol 2020; 84:e13247. [PMID: 32304259 DOI: 10.1111/aji.13247] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/03/2020] [Accepted: 04/09/2020] [Indexed: 12/22/2022] Open
Abstract
PROBLEM Gut dysbiosis is caused by several factors, including the use of antibiotics. Since intestinal dysbiosis is associated with a wide range of immunopathological and reproductive conditions, the main goal of this study was to evaluate amoxicillin-induced gut dysbiosis and its influence on the oestrous cycle in mice. METHOD OF STUDY Mice were treated with amoxicillin or PBS, and faecal microbiota was evaluated by 16S rDNA metagenomic sequencing. The oestrous cycle was evaluated by vaginal cytology, vaginal opening and flow cytometry. After the induction of gut dysbiosis, the ovaries and the caecum were analysed to differential expression of IL-1β and IL-10 genes and histological analysis. RESULTS Amoxicillin-treated mice presented differing bacterial groups in the faecal microbiota when compared to the PBS-treated group indicating that amoxicillin treatment-induced gut dysbiosis and they gained weight. The vaginal cytology analysis showed that amoxicillin-induced gut dysbiosis decreased the number of cells but increased the relative number of leucocytes and altered the oestrous cycle. IL-1β was shown to be upregulated in the caecum and in the ovary of the dysbiotic mice. On the other hand, IL-10 expression was shown to be diminished in both organs of the dysbiotic mice. The oocyte area from dysbiotic group presented lower than non-dysbiotic mice with increasing thickness of the pellucid zone. The follicular teak from dysbiotic mice showed lower thickness than non-dysbiotic mice. CONCLUSION The results indicate that amoxicillin induces gut dysbiosis and influences the oestrous cycle and the inflammatory status of the ovary and the caecum.
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Affiliation(s)
- Evandro Neves Silva
- Laboratório de Imunologia das Doenças Infecciosas e Crônicas, Universidade José do Rosário Vellano, Alfenas, Brazil
| | - Thaís Viana Fialho Martins
- Laboratório de Imunologia das Doenças Infecciosas e Crônicas, Universidade José do Rosário Vellano, Alfenas, Brazil
| | | | | | - Gabriela de Assis Dos Santos
- Laboratório de Imunologia das Doenças Infecciosas e Crônicas, Universidade José do Rosário Vellano, Alfenas, Brazil
| | - Caio Pupin Rosa
- Departamento de Microbiologia e Imunologia, Universidade Federal de Alfenas, Alfenas, Brazil
| | - Jeferson Antônio Santos
- Laboratório de Imunologia das Doenças Infecciosas e Crônicas, Universidade José do Rosário Vellano, Alfenas, Brazil
| | - Rômulo Dias Novaes
- Departamento de Biologia Estrutural, Universidade Federal de Alfenas, Alfenas, Brazil
| | | | - Patrícia Paiva Corsetti
- Laboratório de Imunologia das Doenças Infecciosas e Crônicas, Universidade José do Rosário Vellano, Alfenas, Brazil
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Xiao J, Wang J, Chen Y, Zhou Z, Gao C, Guo Z. Sauchinone ameliorates intestinal inflammation and promotes Th17 cell production of IL-10 via Blimp-1. Biochem Biophys Res Commun 2019; 522:435-441. [PMID: 31771884 DOI: 10.1016/j.bbrc.2019.11.122] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 11/19/2019] [Indexed: 01/16/2023]
Abstract
Inflammatory bowel disease (IBD) is characterized by chronic, unpredictable relapsing and inflammatory disease of the gastrointestinal tract. Daily diet patterns have long been one of the most important hotspots for IBD therapeutic strategies. Sauchinone (SAU), a key bioactive lignin isolated from the roots of the herb Saururus chinensis, has been known to play an anti-inflammatory role in several diseases. However, its effect on IBD has not yet been investigated. In the current study, we established 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced colitis in mice and treated them with SAU. Flow cytometric analysis was performed to determine the phenotype of T cells in the lamina propria. qRT-PCR and ELISA were performed to measure cytokine transcript and protein levels, respectively. We found that SAU ameliorated TNBS-induced mouse colitis and inflammatory responses in mucosal tissues and peripheral blood CD4+ T cells from IBD patients. SAU significantly suppressed Th17 differentiation but facilitated IL-10 production, and SAU-treated Th17 cells exhibited inhibitory functions in vitro and in vivo. Mechanistically, we demonstrated that SAU induced Blimp-1 expression (encoded by Prdm1) in Th17 cells, and SAU failed to increase IL-10 production in Prdm1-knockout Th17 cells. Our data reveal an uncharacterized mechanism through which SAU regulates intestinal inflammation and Th17 differentiation.
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Affiliation(s)
- Jie Xiao
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jinxia Wang
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China; Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yanxi Chen
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Zhou Zhou
- Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Caiping Gao
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China; Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
| | - Zhenzhen Guo
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China; Department of Gastroenterology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
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