151
|
Dietary Supplementation with Sea Bass ( Lateolabrax maculatus) Ameliorates Ulcerative Colitis and Inflammation in Macrophages through Inhibiting Toll-Like Receptor 4-Linked Pathways. Int J Mol Sci 2019; 20:ijms20122907. [PMID: 31207873 PMCID: PMC6628281 DOI: 10.3390/ijms20122907] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 06/06/2019] [Accepted: 06/12/2019] [Indexed: 12/12/2022] Open
Abstract
Sea bass (Lateolabrax maculatus) is a kind of food material commonly consumed in daily life. In traditional Chinese medicinal books, it has been indicated that sea bass can be applied for managing many inflammation-associated conditions. However, the studies on the pharmacological mechanisms of inflammation of sea bass remain scarce. Hence, this study aims to investigate the molecular mechanisms of the anti-inflammatory activity of sea bass. Anti-inflammatory activities of sea bass were assessed using dextran sulfate sodium (DSS)-induced colitis in a mice model and lipopolysaccharide (LPS)-activated macrophages model. Low body weight and short colon length were observed in DSS-fed mice that were significantly recovered upon sea bass treatments. Moreover, the colon histopathology score showed that sea bass-treated mice had decreased crypt damage, focal inflammation infiltration and the extent of inflammation, suggesting that treatment with sea bass could attenuate intestinal inflammation. In addition, the in-vitro study conjointly indicated that sea bass could suppress the inflammatory mediators in LPS-activated macrophage by inhibiting the TLR4-linked pathway. The present findings demonstrated that sea bass has an inhibitory effect on TLR4 signaling; thus, it could be a promising candidate for treating inflammation-associated conditions. A further justification for the clinical application of sea bass in treating inflammation-associated conditions is necessary.
Collapse
|
152
|
Sharma N, Saxena S, Agrawal I, Singh S, Srinivasan V, Arvind S, Epari S, Paul S, Jha S. Differential Expression Profile of NLRs and AIM2 in Glioma and Implications for NLRP12 in Glioblastoma. Sci Rep 2019; 9:8480. [PMID: 31186453 PMCID: PMC6559951 DOI: 10.1038/s41598-019-44854-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 05/22/2019] [Indexed: 02/07/2023] Open
Abstract
Gliomas are the most prevalent primary brain tumors with immense clinical heterogeneity, poor prognosis and survival. The nucleotide-binding domain, and leucine-rich repeat containing receptors (NLRs) and absent-in-melanoma 2 (AIM2) are innate immune receptors crucial for initiation and progression of several cancers. There is a dearth of reports linking NLRs and AIM2 to glioma pathology. NLRs are expressed by cells of innate immunity, including monocytes, macrophages, dendritic cells, endothelial cells, and neutrophils, as well as cells of the adaptive immune system. NLRs are critical regulators of major inflammation, cell death, immune and cancer-associated pathways. We used a data-driven approach to identify NLRs, AIM2 and NLR-associated gene expression and methylation patterns in low grade glioma and glioblastoma, using The Cancer Genome Atlas (TCGA) patient datasets. Since TCGA data is obtained from tumor tissue, comprising of multiple cell populations including glioma cells, endothelial cells and tumor-associated microglia/macrophages we have used multiple cell lines and human brain tissues to identify cell-specific effects. TCGA data mining showed significant differential NLR regulation and strong correlation with survival in different grades of glioma. We report differential expression and methylation of NLRs in glioma, followed by NLRP12 identification as a candidate prognostic marker for glioma progression. We found that Nlrp12 deficient microglia show increased colony formation while Nlrp12 deficient glioma cells show decreased cellular proliferation. Immunohistochemistry of human glioma tissue shows increased NLRP12 expression. Interestingly, microglia show reduced migration towards Nlrp12 deficient glioma cells.
Collapse
Affiliation(s)
- Nidhi Sharma
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Shivanjali Saxena
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Ishan Agrawal
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Shalini Singh
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Varsha Srinivasan
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - S Arvind
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Sridhar Epari
- Department of Pathology, Tata Memorial Hospital, Mumbai, Maharashtra, India
| | - Sushmita Paul
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - Sushmita Jha
- Department of Bioscience and Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur, India.
| |
Collapse
|
153
|
Dellaporta E, Lazaridis LD, Koussoulas V, Netea MG, Giamarellos-Bourboulis EJ, Triantafyllou K. Association between genotypes of rs34436714 of NLRP12 and serum tumor necrosis factor-alpha in inflammatory bowel disease: A case-control study. Medicine (Baltimore) 2019; 98:e15913. [PMID: 31169706 PMCID: PMC6571393 DOI: 10.1097/md.0000000000015913] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
We aimed to investigate the impact of the single nucleotide polymorphisms of rs34436714 of the NOD-like receptor protein 12 gene on the production of tumor necrosis factor-alpha (TNFα) in patients with inflammatory bowel disease (IBD)In a matched case-control study 90 patients with IBD, 56 with Crohn disease (CD) and 34 with ulcerative colitis, were genotyped and compared to 98 healthy comparators matched for age and gender. Expression level of TNFα, interleukin (IL)-6, IL-12, and soluble triggering receptor expressed on myeloid cells were measured in patients' sera. Peripheral blood mononuclear cells (PBMCs) were isolated and stimulated for TNFα production.Serum TNFα was greater among carriers of GT/TT genotypes than GG genotypes of rs34436714. Stimulated TNFα production was also higher in carriers of GT/TT genotypes. The frequency of CD with fistulizing behavior and with CD involving the small intestine was greater among carriers of GT/TT genotypes than of the GG genotype. Distribution of the GG, GT, and TT genotypes of rs34436714 were in Hardy-Weinberg equilibrium in both groups. The genotype distribution was the same in both groups.Carriage of minor frequency alleles of rs34436714 was accompanied by greater circulating levels of TNFα and by greater capacity for stimulated TNFα production by PBMCs. These alleles had an impact on the phenotype of patients with CD.
Collapse
Affiliation(s)
- Erminia Dellaporta
- 2nd Department of Propedeutic Medicine, Unit of Hepatogastroenterology, National and Kapodistrian University of Athens
| | - Lazaros-Dimitrios Lazaridis
- 2nd Department of Propedeutic Medicine, Unit of Hepatogastroenterology, National and Kapodistrian University of Athens
| | - Vasilleios Koussoulas
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School, Greece
| | - Mihai G. Netea
- Department of Internal Medicine, Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
- Department for Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn, Germany
| | | | - Konstantinos Triantafyllou
- 2nd Department of Propedeutic Medicine, Unit of Hepatogastroenterology, National and Kapodistrian University of Athens
| |
Collapse
|
154
|
Ji J, Ge X, Chen Y, Zhu B, Wu Q, Zhang J, Shan J, Cheng H, Shi L. Daphnetin ameliorates experimental colitis by modulating microbiota composition and T reg/T h17 balance. FASEB J 2019; 33:9308-9322. [PMID: 31145641 DOI: 10.1096/fj.201802659rr] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Inflammatory bowel diseases (IBDs) are characterized by chronic pathologies associated with extensive gut dysbiosis and intestinal inflammation. Hence, endeavors to improve the inflammatory pathology by manipulating gut microbiota are ongoing. Daphnetin (DAPH) is a coumarin derivative extracted from Daphne odora var with anti-inflammatory and immune-regulatory properties that has been widely used in treating inflammatory disorders. Herein, we showed that DAPH remarkably alleviated experimental colitis by reducing colonic inflammation, improving colonic integrity, and reestablishing immune and metabolic homeostasis in the inflicted intestines. Our analysis showed that DAPH modified the composition of gut microbiota and altered the metabolic profiles in dextran sulfate sodium-treated mice. In particular, this agent significantly elevated the abundance of short-chain fatty acid (SCFA)-producing gut microbiota, causatively related with the enhanced development of Treg cells and the reduced proinflammatory Th17 cell differentiation. More critically, the protective effect of DAPH was shown to be transmissible among colitic mice through cohousing or fecal microbiota transplantation, further substantiating the importance of SCFA-producing gut microbiota in DAPH action. We thus for the first time reveal the potential of DAPH in resetting the gut microbiome and reestablishing immune homeostasis in colitic mice, which may have clinical implications for treating IBD.-Ji, J., Ge, X., Chen, Y., Zhu, B., Wu, Q., Zhang, J., Shan, J., Cheng, H., Shi, L. Daphnetin ameliorates experimental colitis by modulating microbiota composition and Treg/Th17 balance.
Collapse
Affiliation(s)
- Jianjian Ji
- Key Laboratory of Inflammation and Immunoregulation, School of Medical and Life Science, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaoyin Ge
- Key Laboratory of Inflammation and Immunoregulation, School of Medical and Life Science, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yugen Chen
- Department of Colorectal Surgery, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Bo Zhu
- Key Laboratory of Inflammation and Immunoregulation, School of Medical and Life Science, Nanjing University of Chinese Medicine, Nanjing, China
| | - Qinan Wu
- Collaborative Innovation Centers of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China
| | - Junfeng Zhang
- Key Laboratory of Inflammation and Immunoregulation, School of Medical and Life Science, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jinjun Shan
- Jiangsu Key Laboratory of Pediatric Respiratory Disease, Institute of Pediatrics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Haibo Cheng
- The First School of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Liyun Shi
- Key Laboratory of Inflammation and Immunoregulation, School of Medical and Life Science, Nanjing University of Chinese Medicine, Nanjing, China
| |
Collapse
|
155
|
Straub K, Husen P, Baba HA, Trippler M, Wedemeyer H, Herzer K. Promyelocytic leukemia protein deficiency leads to spontaneous formation of liver tumors in hepatitis C virus transgenic mice. Cancer Med 2019; 8:3793-3802. [PMID: 31144474 PMCID: PMC6639172 DOI: 10.1002/cam4.2162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 03/08/2019] [Accepted: 03/28/2019] [Indexed: 01/14/2023] Open
Abstract
Persistent infection with hepatitis C virus (HCV) is a known risk factor for the development of hepatocellular carcinoma (HCC). The lack of the tumor suppressor promyelocytic leukemia protein (PML) in combination with HCV fosters hepatocarcinogenesis via induction of HCC using diethylnitrosamine (DEN) in a rodent model. However, the spontaneous development of malignant lesions in PML‐deficient mice with an HCV‐transgene (HCVtg) has not been investigated thus far. We crossed PML‐deficient mice with HCV transgene expressing mice and observed the animals for a period of 12 months. Livers were examined macroscopically and histologically. Gene expression analysis was performed on these samples, and compared with expression of selected genes in human samples of patients undergoing liver transplantation for HCC. In vitro studies were performed in order to analyze the selected pathways. Genetic depletion of PML in combination with HCVtg coincided with an increased hepatocyte proliferation, resulting in development of HCCs in 40% of the PML‐deficient livers. No tumor development was observed in mice with either the PML‐knockout (PML−/−) or HCVtg alone. Gene expression profiling uncovered pathways involved in cell proliferation, such as NLRP12 and RASFF6. These findings were verified in samples from human livers of patients undergoing liver transplantation for HCC. Further in vitro studies confirmed that lack of PML, NLRP12, and RASFF6 leads to increased cell proliferation. The lack of PML in combination with HCV is associated with increased cell proliferation, fostering tumor development in the liver. Our data demonstrate that PML acts as an important tumor suppressor in HCV‐dependent liver pathology.
Collapse
Affiliation(s)
- Katja Straub
- Department of Gastroenterology and Hepatology, Faculty of Medicine, University Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Peri Husen
- Department of General‐, Visceral‐ and Transplantation Surgery, Faculty of Medicine, University Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Hideo A. Baba
- Institute of Pathology, Faculty of Medicine, University Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Martin Trippler
- Department of Gastroenterology and Hepatology, Faculty of Medicine, University Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Heiner Wedemeyer
- Department of Gastroenterology and Hepatology, Faculty of Medicine, University Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| | - Kerstin Herzer
- Department of Gastroenterology and Hepatology, Faculty of Medicine, University Hospital EssenUniversity of Duisburg‐EssenEssenGermany
| |
Collapse
|
156
|
Differential effects of psychotropic drugs on microbiome composition and gastrointestinal function. Psychopharmacology (Berl) 2019; 236:1671-1685. [PMID: 30155748 DOI: 10.1007/s00213-018-5006-5] [Citation(s) in RCA: 149] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/16/2018] [Indexed: 02/07/2023]
Abstract
RATIONALE Growing evidence supports a role for the microbiota in regulating gut-brain interactions and, thus, psychiatric disorders. Despite substantial scientific efforts to delineate the mechanism of action of psychotropic medications at a central nervous system (CNS) level, there remains a critical lack of understanding on how these drugs might affect the microbiota and gut physiology. OBJECTIVES We investigated the antimicrobial activity of psychotropics against two bacterial strain residents in the human gut, Lactobacillus rhamnosus and Escherichia coli. In addition, we examined the impact of chronic treatment with these drugs on microbiota and intestinal parameters in the rat. RESULTS In vitro fluoxetine and escitalopram showed differential antimicrobial effects. Lithium, valproate and aripiprazole administration significantly increased microbial species richness and diversity, while the other treatments were not significantly different from controls. At the genus level, several species belonging to Clostridium, Peptoclostridium, Intestinibacter and Christenellaceae were increased following treatment with lithium, valproate and aripiprazole when compared to the control group. Animals treated with escitalopram, venlafaxine, fluoxetine and aripiprazole exhibited an increased permeability in the ileum. CONCLUSIONS These data show that psychotropic medications differentially influence the composition of gut microbiota in vivo and that fluoxetine and escitalopram have specific antimicrobial activity in vitro. Interestingly, drugs that significantly altered gut microbial composition did not increase intestinal permeability, suggesting that the two factors are not causally linked. Overall, unravelling the impact of psychotropics on gastrointestinal and microbiota measures offers the potential to provide critical insight into the mechanism of action and side effects of these medications.
Collapse
|
157
|
Udden SN, Kwak YT, Godfrey V, Khan MAW, Khan S, Loof N, Peng L, Zhu H, Zaki H. NLRP12 suppresses hepatocellular carcinoma via downregulation of cJun N-terminal kinase activation in the hepatocyte. eLife 2019; 8:40396. [PMID: 30990169 PMCID: PMC6483596 DOI: 10.7554/elife.40396] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 03/25/2019] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a deadly human cancer associated with chronic inflammation. The cytosolic pathogen sensor NLRP12 has emerged as a negative regulator of inflammation, but its role in HCC is unknown. Here we investigated the role of NLRP12 in HCC using mouse models of HCC induced by carcinogen diethylnitrosamine (DEN). Nlrp12-/- mice were highly susceptible to DEN-induced HCC with increased inflammation, hepatocyte proliferation, and tumor burden. Consistently, Nlrp12-/- tumors showed higher expression of proto-oncogenes cJun and cMyc and downregulation of tumor suppressor p21. Interestingly, antibiotics treatment dramatically diminished tumorigenesis in Nlrp12-/- mouse livers. Signaling analyses demonstrated higher JNK activation in Nlrp12-/- HCC and cultured hepatocytes during stimulation with microbial pattern molecules. JNK inhibition or NLRP12 overexpression reduced proliferative and inflammatory responses of Nlrp12-/- hepatocytes. In summary, NLRP12 negatively regulates HCC pathogenesis via downregulation of JNK-dependent inflammation and proliferation of hepatocytes.
Collapse
Affiliation(s)
- Sm Nashir Udden
- Department of Pathology, UT Southwestern Medical Center, Dallas, United States
| | - Youn-Tae Kwak
- Department of Pathology, UT Southwestern Medical Center, Dallas, United States.,Department of Biochemistry, UT Southwestern Medical Center, Dallas, United States
| | - Victoria Godfrey
- Department of Pathology, UT Southwestern Medical Center, Dallas, United States
| | - Md Abdul Wadud Khan
- Department of Surgical Oncology, MD Anderson Cancer Center, Houston, United States
| | - Shahanshah Khan
- Department of Pathology, UT Southwestern Medical Center, Dallas, United States
| | - Nicolas Loof
- Children's Research Institute, UT Southwestern Medical Center, Dallas, United States
| | - Lan Peng
- Department of Pathology, UT Southwestern Medical Center, Dallas, United States
| | - Hao Zhu
- Children's Research Institute, UT Southwestern Medical Center, Dallas, United States.,Department of Pediatrics, UT Southwestern Medical Center, Dallas, United States.,Center for Regenerative Science and Medicine, UT Southwestern Medical Center, Dallas, United States.,Department of Internal Medicine, UT Southwestern Medical Center, Dallas, United States
| | - Hasan Zaki
- Department of Pathology, UT Southwestern Medical Center, Dallas, United States
| |
Collapse
|
158
|
Sasaki K, Inoue J, Sasaki D, Hoshi N, Shirai T, Fukuda I, Azuma T, Kondo A, Osawa R. Construction of a Model Culture System of Human Colonic Microbiota to Detect Decreased Lachnospiraceae Abundance and Butyrogenesis in the Feces of Ulcerative Colitis Patients. Biotechnol J 2019; 14:e1800555. [PMID: 30791234 DOI: 10.1002/biot.201800555] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/28/2018] [Indexed: 01/27/2023]
Abstract
Compositional alteration of the gut microbiota is associated with ulcerative colitis (UC). Here, a model culture system is established for the in vitro human colonic microbiota of UC, which will be helpful for determining medical interventions. 16S ribosomal RNA sequencing confirms that UC models are successfully developed from fecal inoculum and retain the bacterial species biodiversity of UC feces. The UC models closely reproduce the microbial components and successfully preserve distinct clusters from the healthy subjects (HS), as observed in the feces. The relative abundance of bacteria belonging to the family Lachnospiraceae significantly decreases in the UC models compared to that in HS, as observed in the feces. The system detects significantly lower butyrogenesis in the UC models than that in HS, correlating with the decreased abundance of Lachnospiraceae. Interestingly, the relative abundance of Lachnospiraceae does not correlate with disease activity (defined as partial Mayo score), suggesting that Lachnospiraceae persists in UC patients at a decreased level, irrespective of the alteration in disease activity. Moreover, the system shows that administration of Clostridium butyricum MIYAIRI restores butyrogenesis in the UC model. Hence, the model detects deregulation in the intestinal environment in UC patients and may be useful for simulating the effect of probiotics.
Collapse
Affiliation(s)
- Kengo Sasaki
- Graduate School of Science, Technology and Innovation Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Jun Inoue
- Department of Internal Medicine, Division of Gastroenterology, Graduate School of Medicine, Kobe University, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Daisuke Sasaki
- Graduate School of Science, Technology and Innovation Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Namiko Hoshi
- Department of Internal Medicine, Division of Gastroenterology, Graduate School of Medicine, Kobe University, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Tomokazu Shirai
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Itsuko Fukuda
- Graduate School of Science, Technology and Innovation Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| | - Takeshi Azuma
- Department of Internal Medicine, Division of Gastroenterology, Graduate School of Medicine, Kobe University, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan
| | - Akihiko Kondo
- Graduate School of Science, Technology and Innovation Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan.,RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa, 230-0045, Japan
| | - Ro Osawa
- Department of Bioresource Science, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan.,Research Center for Food Safety and Security, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan
| |
Collapse
|
159
|
Gut Microbiota-Mediated NLRP12 Expression Drives the Attenuation of Dextran Sulphate Sodium-Induced Ulcerative Colitis by Qingchang Wenzhong Decoction. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:9839474. [PMID: 31061672 PMCID: PMC6466890 DOI: 10.1155/2019/9839474] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 11/13/2018] [Accepted: 03/04/2019] [Indexed: 02/06/2023]
Abstract
Qingchang Wenzhong Decoction (QCWZD) is a newly developed, effective traditional Chinese herbal formulation for ulcerative colitis (UC). In earlier studies, we found that QCWZD could relieve the clinical symptoms of UC patients, reduce inflammation, and improve the intestinal barrier function in dextran sulphate sodium (DSS)-induced UC rats. However, the relationship between QCWZD and the gut microbiota in colitis was not clarified. In this study, we established a rat model of DSS-induced UC and then investigated the regulatory effects of QCWZD on the gut microbiota using 16S rRNA analysis. We also determined the expression of NLRP12 after QCWZD administration. Our findings suggested that QCWZD administration could modulate gut microbiota composition and selectively promote the protective strains such as Butyricimonas, Blautia, and Odoribacter, whereas the enteric pathogens including Clostridium and Dorea were significantly reduced after QCWZD treatment. It is noteworthy that QCWZD administration was identified to promote gut microbiota-mediated NLRP12 expression by inhibiting the activity of the TLR4/Blimp-1 axis. In conclusion, our study supports the potential of QCWZD administration as a beneficial therapeutic strategy for UC.
Collapse
|
160
|
Abstract
Inflammasomes are molecular platforms that assemble upon sensing various intracellular stimuli. Inflammasome assembly leads to activation of caspase 1, thereby promoting the secretion of bioactive interleukin-1β (IL-1β) and IL-18 and inducing an inflammatory cell death called pyroptosis. Effectors of the inflammasome efficiently drive an immune response, primarily providing protection against microbial infections and mediating control over sterile insults. However, aberrant inflammasome signalling is associated with pathogenesis of inflammatory and metabolic diseases, neurodegeneration and malignancies. Chronic inflammation perpetuated by inflammasome activation plays a central role in all stages of tumorigenesis, including immunosuppression, proliferation, angiogenesis and metastasis. Conversely, inflammasome signalling also contributes to tumour suppression by maintaining intestinal barrier integrity, which portrays the diverse roles of inflammasomes in tumorigenesis. Studies have underscored the importance of environmental factors, such as diet and gut microbiota, in inflammasome signalling, which in turn influences tumorigenesis. In this Review, we deliver an overview of the interplay between inflammasomes and tumorigenesis and discuss their potential as therapeutic targets.
Collapse
Affiliation(s)
- Rajendra Karki
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | | |
Collapse
|
161
|
NLRP12 Regulates Anti-viral RIG-I Activation via Interaction with TRIM25. Cell Host Microbe 2019; 25:602-616.e7. [PMID: 30902577 DOI: 10.1016/j.chom.2019.02.013] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 08/12/2018] [Accepted: 01/15/2019] [Indexed: 02/06/2023]
Abstract
Establishing the balance between positive and negative innate immune mechanisms is crucial for maintaining homeostasis. Here we uncover the regulatory crosstalk between two previously unlinked innate immune receptor families: RIG-I, an anti-viral cytosolic receptor activated type I interferon production, and NLR (nucleotide-binding domain, leucine repeat domain-containing protein). We show that NLRP12 dampens RIG-I-mediated immune signaling against RNA viruses by controlling RIG-I's association with its adaptor MAVS. The nucleotide-binding domain of NLRP12 interacts with the ubiquitin ligase TRIM25 to prevent TRIM25-mediated, Lys63-linked ubiquitination and activation of RIG-I. NLRP12 also enhances RNF125-mediated, Lys48-linked degradative ubiquitination of RIG-I. Vesicular stomatitis virus (VSV) infection downregulates NLRP12 expression to allow RIG-I activation. Myeloid-cell-specific Nlrp12-deficient mice display a heightened interferon and TNF response and are more resistant to VSV infection. These results indicate that NLRP12 functions as a checkpoint for anti-viral RIG-I activation.
Collapse
|
162
|
Morse JC, Li P, Ely KA, Shilts MH, Wannemuehler TJ, Huang LC, Sheng Q, Chowdhury NI, Chandra RK, Das SR, Turner JH. Chronic rhinosinusitis in elderly patients is associated with an exaggerated neutrophilic proinflammatory response to pathogenic bacteria. J Allergy Clin Immunol 2019; 143:990-1002.e6. [PMID: 30468775 PMCID: PMC6408962 DOI: 10.1016/j.jaci.2018.10.056] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 10/15/2018] [Accepted: 10/29/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND Potential effects of aging on chronic rhinosinusitis (CRS) pathophysiology have not been well defined but might have important ramifications given a rapidly aging US and world population. OBJECTIVE The goal of the current study was to determine whether advanced age is associated with specific inflammatory CRS endotypes or immune signatures. METHODS Levels of 17 mucus cytokines and inflammatory mediators were measured in 147 patients with CRS. Hierarchical cluster analysis was used to identify and characterize inflammatory CRS endotypes, as well as to determine whether age was associated with specific immune signatures. RESULTS A CRS endotype with a proinflammatory neutrophilic immune signature was enriched in older patients. In the overall cohort patients 60 years and older had increased mucus levels of IL-1β, IL-6, IL-8, and TNF-α when compared with their younger counterparts. Increases in levels of proinflammatory cytokines were associated with both tissue neutrophilia and symptomatic bacterial infection/colonization in aged patients. CONCLUSIONS Aged patients with CRS have a unique inflammatory signature that corresponds to a neutrophilic proinflammatory response. Neutrophil-driven inflammation in aged patients with CRS might be less likely to respond to corticosteroids and might be closely linked to chronic microbial infection or colonization.
Collapse
Affiliation(s)
- Justin C Morse
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn
| | - Ping Li
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn
| | - Kim A Ely
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tenn
| | - Meghan H Shilts
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn
| | - Todd J Wannemuehler
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn
| | - Li-Ching Huang
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tenn
| | - Quanhu Sheng
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tenn
| | - Naweed I Chowdhury
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn
| | - Rakesh K Chandra
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn
| | - Suman R Das
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tenn
| | - Justin H Turner
- Department of Otolaryngology-Head and Neck Surgery, Vanderbilt University Medical Center, Nashville, Tenn.
| |
Collapse
|
163
|
Harusato A, Viennois E, Etienne-Mesmin L, Matsuyama S, Abo H, Osuka S, Lukacs NW, Naito Y, Itoh Y, Li JD, Merlin D, Gewirtz AT, Denning TL. Early-Life Microbiota Exposure Restricts Myeloid-Derived Suppressor Cell-Driven Colonic Tumorigenesis. Cancer Immunol Res 2019; 7:544-551. [PMID: 30782668 DOI: 10.1158/2326-6066.cir-18-0444] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2018] [Revised: 12/07/2018] [Accepted: 02/15/2019] [Indexed: 12/28/2022]
Abstract
Gut microbiota and their metabolites are instrumental in regulating homeostasis at intestinal and extraintestinal sites. However, the complex effects of prenatal and early postnatal microbial exposure on adult health and disease outcomes remain incompletely understood. Here, we showed that mice raised under germ-free conditions until weaning and then transferred to specific pathogen-free (SPF) conditions harbored altered microbiota composition, augmented inflammatory cytokine and chemokine expression, and were hyper-susceptible to colitis-associated tumorigenesis later in adulthood. Increased number and size of colon tumors and intestinal epithelial cell proliferation in recolonized germ-free mice were associated with augmented intratumoral CXCL1, CXCL2, and CXCL5 expression and granulocytic myeloid-derived suppressor cell (G-MDSC) accumulation. Consistent with these findings, CXCR2 neutralization in recolonized germ-free mice completely reversed the exacerbated susceptibility to colitis-associated tumorigenesis. Collectively, our findings highlight a crucial role for early-life microbial exposure in establishing intestinal homeostasis that restrains colon cancer in adulthood.
Collapse
Affiliation(s)
- Akihito Harusato
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia. .,Department of Gastroenterology, North Medical Center, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Emilie Viennois
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Lucie Etienne-Mesmin
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia.,UMR454 MEDIS, Université Clermont Auvergne/INRA, Clermont-Ferrand, France
| | - Shingo Matsuyama
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Hirohito Abo
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Satoru Osuka
- Department of Neurosurgery, Emory University, Atlanta, Georgia
| | - Nicholas W Lukacs
- Department of Pathology, University of Michigan, Ann Arbor, Michigan
| | - Yuji Naito
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshito Itoh
- Department of Molecular Gastroenterology and Hepatology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Jian-Dong Li
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Didier Merlin
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia.,Atlanta Veterans Affairs Medical Center, Decatur, Georgia
| | - Andrew T Gewirtz
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia
| | - Timothy L Denning
- Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia.
| |
Collapse
|
164
|
Dobranowski PA, Tang C, Sauvé JP, Menzies SC, Sly LM. Compositional changes to the ileal microbiome precede the onset of spontaneous ileitis in SHIP deficient mice. Gut Microbes 2019; 10:578-598. [PMID: 30760087 PMCID: PMC6748580 DOI: 10.1080/19490976.2018.1560767] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Inflammatory bowel disease, encompassing both ulcerative colitis and Crohn's disease, is characterized by chronic, relapsing-remitting gastrointestinal inflammation of unknown etiology. SHIP deficient mice develop fully penetrant, spontaneous ileitis at 6 weeks of age, and thus offer a tractable model of Crohn's disease-like inflammation. Since disruptions to the microbiome are implicated in the pathogenesis of Crohn's disease, we conducted a 16S rRNA gene survey of the ileum, cecum, colon, and stool contents of SHIP+/+ and SHIP-/- mice. We predicted that diversity and compositional changes would occur after, and possibly prior to, the onset of overt disease. No differences were found in alpha diversity, but significant changes in beta diversity and specific commensal populations were observed in the ileal compartment of SHIP deficient mice after the onset of overt disease. Specifically, reductions in the Bacteroidales taxa, Muribaculum intestinale, and an expansion in Lactobacillus were most notable. In contrast, expansions to bacterial taxa previously associated with inflammation, including Bacteroides, Parabacteroides, and Prevotella were observed in the ilea of SHIP deficient mice prior to the onset of overt disease. Finally, antibiotic treatment reduced the development of intestinal inflammation in SHIP-/- mice. Thus, our findings indicate that SHIP is involved in maintaining ileal microbial homeostasis. These results have broader implications for humans, since reduced SHIP protein levels have been reported in people with Crohn's disease.
Collapse
Affiliation(s)
| | | | | | | | - Laura May Sly
- University of British Columbia,BC Children’s Hospital research institute,CONTACT Laura May Sly BC Children’s Hospital research institute, 950 West 28th Avenue, A5-142TRB, Vancouver, British Columbia V5Z 4H4, Canada
| |
Collapse
|
165
|
Wu CH, Ko JL, Liao JM, Huang SS, Lin MY, Lee LH, Chang LY, Ou CC. D-methionine alleviates cisplatin-induced mucositis by restoring the gut microbiota structure and improving intestinal inflammation. Ther Adv Med Oncol 2019; 11:1758835918821021. [PMID: 30792823 PMCID: PMC6376546 DOI: 10.1177/1758835918821021] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 11/13/2018] [Indexed: 02/06/2023] Open
Abstract
Background There are close links between chemotherapy-induced intestinal mucositis and microbiota dysbiosis. Previous studies indicated that D-methionine was an excellent candidate for a chemopreventive agent. Here, we investigated the effects of D-methionine on cisplatin-induced mucositis. Materials and methods Male Wistar rats (176-200 g, 6 weeks old) were given cisplatin (5 mg/kg) and treated with D-methionine (300 mg/kg). Histopathological, digestive enzymes activity, oxidative/antioxidant status, proinflammatory/anti-inflammatory cytokines in intestinal tissues were measured. Next-generation sequencing technologies were also performed to investigate the gut microbial ecology. Results D-methionine administration increased villus length and crypt depth and improved digestive enzyme (leucine aminopeptidase, sucrose and alkaline phosphatase) activities in the brush-border membrane of cisplatin-treated rats (p < 0.05). Furthermore, D-methionine significantly attenuated oxidative stress and inflammatory reaction and increased interleukin-10 levels in cisplatin-induced intestinal mucositis (p < 0.05). Cisplatin administration resulted in high relative abundances of Deferribacteres and Proteobacteria and a low diversity of the microbiota when compared with control groups, D-methionine only and cisplatin plus D-methionine. Cisplatin markedly increased comparative abundances of Bacteroides caccae, Escherichia coli, Mucispirillum schaedleri, Bacteroides uniformis and Desulfovibrio C21-c20, while Lactobacillus was almost completely depleted, compared with the control group. There were higher abundances of Lactobacillus, Lachnospiraceae, and Clostridium butyrium in cisplatin plus D-methionine rats than in cisplatin rats. D-methionine treatment alone significantly increased the number of Lactobacillus reuteri. Conclusion D-methionine protects against cisplatin-induced intestinal damage through antioxidative and anti-inflammatory effects. By enhancing growth of beneficial bacteria (Lachnospiraceae and Lactobacillus), D-methionine attenuates gut microbiome imbalance caused by cisplatin and maintains gut homeostasis.
Collapse
Affiliation(s)
- Cheng-Hsi Wu
- Department of Family Medicine, Jen-Ai Hospital, Dali, Taichung, Taiwan
| | - Jiunn-Liang Ko
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Jiuan-Miaw Liao
- Department of Physiology, School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shiang-Suo Huang
- Department of Pharmacology and Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Meei-Yn Lin
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Ling-Hui Lee
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung, Taiwan
| | - Li-Yu Chang
- Department of Nursing, Jen-Ai Hospital, Dali, Taichung, Taiwan
| | - Chu-Chyn Ou
- School of Nutrition, Chung Shan Medical University, 110, Sec. 1, Chien-Kuo N. Road, Taichung 40203, Taiwan
| |
Collapse
|
166
|
Deng J, Yu XQ, Wang PH. Inflammasome activation and Th17 responses. Mol Immunol 2019; 107:142-164. [PMID: 30739833 DOI: 10.1016/j.molimm.2018.12.024] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 12/24/2022]
Abstract
Immune sensing of exogenous molecules from microbes (e.g., pathogen-associated molecular patterns) and nonmicrobial molecules (e.g., asbestos, alum, and silica), as well as endogenous damage-associated molecular patterns (e.g., ATP, uric acid crystals, and amyloid A) activates innate immunity by inducing immune-related genes, including proinflammatory cytokines, which further facilitate the development of adaptive immunity. The roles of transcriptional responses downstream of immune sensing have been widely characterized in informing adaptive immunity; however, few studies focus on the effect of post-translational responses on the modulation of adaptive immune responses. Inflammasomes activated by the previously described endo- and exogenous stimuli autocatalytically induce intracellular pro-caspase-1, which cleaves the inactive precursors of interleukin-1β (IL-1β) and IL-18 into bioactive proinflammatory cytokines. IL-1β and IL-18 not only contribute to the host defense against infections by activating phagocytes, such as monocytes, macrophages, dendritic cells, and neutrophils, but also induce T-helper 17 (Th17)- and Th1-mediated adaptive immune responses. In synergy with IL-6 and IL-23, IL-1β activates IL-1 receptor (IL-1R) signaling to drive the differentiation of IL-17-producing Th17 cells, which not only play critical roles in host protective immunity to infections of bacteria, fungi, and certain viruses but also participate in the pathology of inflammatory disorders and tumorigenesis. Consequently, targeting inflammasomes and IL-1/IL-1R signaling may effectively improve the treatment of Th17-associated disorders, such as autoinflammatory diseases and cancers, thereby providing novel insights into drug development.
Collapse
Affiliation(s)
- Jian Deng
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Xiao-Qiang Yu
- School of Biological Sciences, University of Missouri - Kansas City, Kansas City, MO, 64110-2499, USA
| | - Pei-Hui Wang
- Advanced Medical Research Institute, Shandong University, Jinan, Shandong 250012, China; School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong.
| |
Collapse
|
167
|
Taira T, Lima V, Prado D, Silva T, Issa J, da Silva L, Zamboni D, Cunha F, Fukada S. NLRP12 Attenuates Inflammatory Bone Loss in Experimental Apical Periodontitis. J Dent Res 2019; 98:476-484. [DOI: 10.1177/0022034518820289] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Apical periodontitis is an inflammatory disorder that results from the host immune response to microbial infection through the dental pulp, leading to alveolar bone destruction. The nod-like receptor 12 (NLRP12) is an atypical intracellular sensor of the NLR family that is involved in the negative regulation of several inflammatory conditions and also osteoclastogenesis. However, the role of NLRP12 in the regulation of immune response and bone loss induced by bacterial infection remains unclear. Here we investigated the development of apical periodontitis in wild-type (WT) and NLRP12 knockout (NLRP12–/–) mice by using micro–computed tomography together with histological, immunohistochemical, and molecular analyses. We found that NLRP12–/– mice are highly susceptible to apical periodontitis induced by bacterial infection, which is associated with an elevated infiltration of neutrophils and macrophages, periapical lesion extension, and alveolar bone destruction. Furthermore, NLRP12–/– mice showed a high expression of inflammatory cytokines ( Il1b, Il6, and Tnfa) and the osteoclastogenic markers ( Rankl and Acp5) in the periapical tissues. Consistent with this observation, NLRP12–/– mice showed an increased number of tartrate-resistant acid phosphatase–positive cells lining the apical periodontitis site, which was associated with augmented expression of the osteoclast effector genes, Ctsk and Mmp9. Mechanistically, NLRP12-deficient preosteoclasts showed elevated IκB-α degradation and p65 phosphorylation when stimulated with receptor activator of nuclear factor (NF)–κB ligand (RANKL). Similarly, increased IκB-α degradation was observed in the periapical tissue of NLRP12–/– mice. Furthermore, our in vitro study showed that preosteoclasts from NLRP12–/– mice exhibited higher RANKL-induced osteoclastogenesis, which was synergistically amplified by interleukin-1β and tumor necrosis factor α (mimicking an inflammatory periapical milieu). In conclusion, our data show that NLRP12 exhibits a protective role in the periapical bone destruction by attenuating inflammation and osteoclastogenesis through negative regulation of the NF-κB pathway.
Collapse
Affiliation(s)
- T.M. Taira
- School of Dentistry of Ribeirão Preto, Department of Pediatric, Preventive and Social Dentistry, University of São Paulo, Ribeirão Preto, Brazil
| | - V. Lima
- School of Medicine of Ribeirão Preto, Department of Pharmacology, University of São Paulo, University of São Paulo, Ribeirão Preto, Brazil
- School of Medicine, Department of Physiology and Pharmacology, University of Ceará, Fortaleza, Brazil
| | - D.S. Prado
- School of Medicine of Ribeirão Preto, Department of Pharmacology, University of São Paulo, University of São Paulo, Ribeirão Preto, Brazil
| | - T.A. Silva
- School of Medicine of Ribeirão Preto, Department of Pharmacology, University of São Paulo, University of São Paulo, Ribeirão Preto, Brazil
- School of Dentistry, Department of Oral Surgery and Pathology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - J.P.M. Issa
- School of Dentistry of Ribeirão Preto, Department of Pediatric, Preventive and Social Dentistry, University of São Paulo, Ribeirão Preto, Brazil
- School of Dentistry of Ribeirão Preto, Department of Dental Materials and Prosthodontics, University of São Paulo, Ribeirão Preto, Brazil
| | - L.A.B. da Silva
- School of Dentistry of Ribeirão Preto, Department of Pediatric, Preventive and Social Dentistry, University of São Paulo, Ribeirão Preto, Brazil
| | - D.S. Zamboni
- School of Medicine of Ribeirão Preto, Department of Cell Biology, University of São Paulo, University of São Paulo, Ribeirão Preto, Brazil
| | - F.Q. Cunha
- School of Medicine of Ribeirão Preto, Department of Pharmacology, University of São Paulo, University of São Paulo, Ribeirão Preto, Brazil
| | - S.Y. Fukada
- School of Pharmaceutical Sciences of Ribeirão Preto, Department of Physics and Chemistry, University of São Paulo, Ribeirão Preto, Brazil
| |
Collapse
|
168
|
Eisfeld AJ, Gasper DJ, Suresh M, Kawaoka Y. C57BL/6J and C57BL/6NJ Mice Are Differentially Susceptible to Inflammation-Associated Disease Caused by Influenza A Virus. Front Microbiol 2019; 9:3307. [PMID: 30713529 PMCID: PMC6346684 DOI: 10.3389/fmicb.2018.03307] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/19/2018] [Indexed: 01/01/2023] Open
Abstract
Influenza viruses cause seasonal epidemics and sporadic pandemics, and are a major burden on human health. To develop better countermeasures and improve influenza disease outcomes, a clearer understanding of influenza pathogenesis is necessary. Host genetic factors have emerged as potential regulators of human influenza disease susceptibility, and in the mouse model, genetic background has been clearly linked to influenza pathogenicity. Here, we show that C57BL/6J mice are significantly more susceptible to disease caused by a 2009 pandemic H1N1 virus, an H7N9 virus, and a highly pathogenic H5N1 influenza virus compared to the closely related substrain, C57BL/6NJ. Mechanistically, influenza virus infection in C57BL/6J mice results in earlier presentation of edema, increased immune cell infiltration, higher levels of inflammatory cytokines, greater tissue damage, and delayed activation of regenerative processes in infected lung tissues compared to C57BL/6NJ mice. These differences are not dependent on virus replication levels. Six genes with known coding region differences between C57BL/6J and C57BL/6NJ strains exhibit increased transcript levels in influenza virus-infected mouse lungs, suggesting potential contributions to regulation of disease susceptibility. This work uncovers a previously unappreciated difference in disease susceptibility between the closely related C57BL/6J and C57BL/6NJ mice, which may be exploited in future studies to identify host factors and/or specific genetic elements that regulate host-dependent inflammatory mechanisms involved in influenza virus pathogenicity.
Collapse
Affiliation(s)
- Amie J Eisfeld
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI, United States
| | - David J Gasper
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI, United States
| | - M Suresh
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI, United States
| | - Yoshihiro Kawaoka
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI, United States.,Division of Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.,International Research Center for Infectious Diseases, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
169
|
Pazmandi J, Kalinichenko A, Ardy RC, Boztug K. Early-onset inflammatory bowel disease as a model disease to identify key regulators of immune homeostasis mechanisms. Immunol Rev 2019; 287:162-185. [PMID: 30565237 PMCID: PMC7379380 DOI: 10.1111/imr.12726] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 09/23/2018] [Indexed: 12/11/2022]
Abstract
Rare, monogenetic diseases present unique models to dissect gene functions and biological pathways, concomitantly enhancing our understanding of the etiology of complex (and often more common) traits. Although inflammatory bowel disease (IBD) is a generally prototypic complex disease, it can also manifest in an early-onset, monogenic fashion, often following Mendelian modes of inheritance. Recent advances in genomic technologies have spurred the identification of genetic defects underlying rare, very early-onset IBD (VEO-IBD) as a disease subgroup driven by strong genetic influence, pinpointing key players in the delicate homeostasis of the immune system in the gut and illustrating the intimate relationships between bowel inflammation, systemic immune dysregulation, and primary immunodeficiency with increased susceptibility to infections. As for other human diseases, it is likely that adult-onset diseases may represent complex diseases integrating the effects of host genetic susceptibility and environmental triggers. Comparison of adult-onset IBD and VEO-IBD thus provides beautiful models to investigate the relationship between monogenic and multifactorial/polygenic diseases. This review discusses the present and novel findings regarding monogenic IBD as well as key questions and future directions of IBD research.
Collapse
Affiliation(s)
- Julia Pazmandi
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
| | - Artem Kalinichenko
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
| | - Rico Chandra Ardy
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed DiseasesViennaAustria
- CeMM Research Center for Molecular Medicine of the Austrian Academy of SciencesViennaAustria
- Department of Pediatrics and Adolescent MedicineMedical University of ViennaViennaAustria
- Department of PediatricsSt. Anna Kinderspital and Children's Cancer Research InstituteMedical University of ViennaViennaAustria
| |
Collapse
|
170
|
Normand S, Waldschmitt N, Neerincx A, Martinez-Torres RJ, Chauvin C, Couturier-Maillard A, Boulard O, Cobret L, Awad F, Huot L, Ribeiro-Ribeiro A, Lautz K, Ruez R, Delacre M, Bondu C, Guilliams M, Scott C, Segal A, Amselem S, Hot D, Karabina S, Bohn E, Ryffel B, Poulin LF, Kufer TA, Chamaillard M. Proteasomal degradation of NOD2 by NLRP12 in monocytes promotes bacterial tolerance and colonization by enteropathogens. Nat Commun 2018; 9:5338. [PMID: 30559449 PMCID: PMC6297353 DOI: 10.1038/s41467-018-07750-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 11/21/2018] [Indexed: 12/29/2022] Open
Abstract
Mutations in the nucleotide-binding oligomerization domain protein 12 (NLRP12) cause recurrent episodes of serosal inflammation. Here we show that NLRP12 efficiently sequesters HSP90 and promotes K48-linked ubiquitination and degradation of NOD2 in response to bacterial muramyl dipeptide (MDP). This interaction is mediated by the linker-region proximal to the nucleotide-binding domain of NLRP12. Consequently, the disease-causing NLRP12 R284X mutation fails to repress MDP-induced NF-κB and subsequent activity of the JAK/STAT signaling pathway. While NLRP12 deficiency renders septic mice highly susceptible towards MDP, a sustained sensing of MDP through NOD2 is observed among monocytes lacking NLRP12. This loss of tolerance in monocytes results in greater colonization resistance towards Citrobacter rodentium. Our data show that this is a consequence of NOD2-dependent accumulation of inflammatory mononuclear cells that correlates with induction of interferon-stimulated genes. Our study unveils a relevant process of tolerance towards the gut microbiota that is exploited by an attaching/effacing enteric pathogen. Mutations in nucleotide-binding oligomerization domain protein 12 (NLRP12) are known to effect inflammatory processes. Here the authors show that NLRP12-mediated proteasomal degradation of NOD2 in monocytes promotes bacterial tolerance and colonisation in a model of enteric infection.
Collapse
Affiliation(s)
- Sylvain Normand
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Nadine Waldschmitt
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France.,Technische Universität München, Chair of Nutrition and Immunology, 85350, Freising-Weihenstephan, Germany
| | - Andreas Neerincx
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QP, UK
| | | | - Camille Chauvin
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Aurélie Couturier-Maillard
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Olivier Boulard
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Laetitia Cobret
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 933, F-75012, Paris, France.,Inserm, UMR_S 933, F-75012, Paris, France
| | - Fawaz Awad
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 933, F-75012, Paris, France.,Inserm, UMR_S 933, F-75012, Paris, France
| | - Ludovic Huot
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | | | - Katja Lautz
- Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne, Cologne, Germany
| | - Richard Ruez
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Myriam Delacre
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Clovis Bondu
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Martin Guilliams
- Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052, Ghent, Belgium.,Department of Internal Medicine, Ghent University, Ghent, 9000, Belgium
| | - Charlotte Scott
- Laboratory of Immunoregulation, VIB Inflammation Research Center, 9052, Ghent, Belgium.,Department of Internal Medicine, Ghent University, Ghent, 9000, Belgium
| | - Anthony Segal
- Division of Medicine, University College London, WC1E 6BT, London, UK
| | - Serge Amselem
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 933, F-75012, Paris, France.,Inserm, UMR_S 933, F-75012, Paris, France
| | - David Hot
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Sonia Karabina
- Sorbonne Universités, UPMC Univ Paris 06, UMR_S 933, F-75012, Paris, France.,Inserm, UMR_S 933, F-75012, Paris, France
| | - Erwin Bohn
- Interfakultaeres Institut für Mikrobiologie und Infektionsmedizin, Eberhard Karl Universitat Tuebingen, 72076, Tuebingen, Germany
| | - Bernhard Ryffel
- CNRS, Orléans University, INEM, UMR 7355, F-45071, Orléans, France
| | - Lionel F Poulin
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France
| | - Thomas A Kufer
- Department of Immunology, Institute of Nutritional Medicine, University of Hohenheim, Stuttgart, Germany
| | - Mathias Chamaillard
- University of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019 - UMR 8204 - CIIL - Centre d'Infection et d'Immunité de Lille, F-59000, Lille, France.
| |
Collapse
|
171
|
Treatment of Dextran Sulfate Sodium-Induced Colitis with Mucosa-Associated Lymphoid Tissue Lymphoma Translocation 1 Inhibitor MI-2 Is Associated with Restoration of Gut Immune Function and the Microbiota. Infect Immun 2018; 86:IAI.00091-18. [PMID: 30249750 PMCID: PMC6246915 DOI: 10.1128/iai.00091-18] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 08/24/2018] [Indexed: 12/29/2022] Open
Abstract
Disruption of the healthy intestinal microbiome and homeostasis of the intestinal immune system, which are closely interactive, are two key factors for ulcerative colitis. Here, we show that MI-2, a selective inhibitor of mucosa-associated lymphoid tissue lymphoma translocation-1 (MALT1), alleviated excessive inflammatory responses and was associated with restoration of healthy intestinal microbiome in mice suffering from dextran sulfate sodium (DSS)-induced colitis. We found that the diversity of intestinal microbiome of mice with DSS-induced colitis was significantly lower than that of healthy mice. However, MI-2 treatment in mice with DSS-induced colitis resulted in restored microbially diverse populations. To understand the possibility of the beneficial effect of the restored microbially diverse populations of MI-2-treated mice with DSS-induced colitis, we showed that inserting fecal microbiota from MI-2-treated mice with DSS-induced colitis and healthy control mice into mice with DSS-induced colitis could alleviate symptoms of colitis. The possibility of MI-2 treatment in DSS-induced colitis, associated with restoration of healthy microbially diverse populations in addition to reshaping host immune modulating capacity by reducing inflammatory cytokines (tumor necrosis factor alpha, interleukin-1β [IL-1β], IL-17α, and IL-22), may be considered therapeutic for ulcerative colitis.
Collapse
|
172
|
Mao L, Kitani A, Strober W, Fuss IJ. The Role of NLRP3 and IL-1β in the Pathogenesis of Inflammatory Bowel Disease. Front Immunol 2018; 9:2566. [PMID: 30455704 PMCID: PMC6230716 DOI: 10.3389/fimmu.2018.02566] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 10/17/2018] [Indexed: 01/13/2023] Open
Abstract
It is logical to assume that a major pro-inflammatory mechanism, i.e., the NLRP3 inflammasome would play a prominent role in the pathogenesis of the Inflammatory Bowel Disease (IBD) in humans. However, while both studies of murine models of gut disease and patients provide data that the main cytokine product generated by this inflammasome, IL-1β, does in fact contribute to inflammation in IBD, there is no evidence that IL-1β plays a decisive or prominent role in "ordinary" patients with IBD (Crohn's disease). On the other hand, there are several definable point mutations that result in over-active NLRP3 inflammasome activity and in these cases, the gut inflammation is driven by IL-1β and is treatable by biologic agents that block the effects of this cytokine.
Collapse
Affiliation(s)
| | | | | | - Ivan J. Fuss
- Mucosal Immunity Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| |
Collapse
|
173
|
Innate Immune Influences on the Gut Microbiome: Lessons from Mouse Models. Trends Immunol 2018; 39:992-1004. [PMID: 30377046 DOI: 10.1016/j.it.2018.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/03/2018] [Accepted: 10/04/2018] [Indexed: 12/11/2022]
Abstract
The gut microbiota is important in health and disease. Whereas the intestinal immune system has evolved to protect the mucosal barrier against pathogens, there is much interest in understanding how it influences the composition and functions of resident microbial communities. Overall, host innate immunity exerts little influence on the microbiota at homeostasis, but increases upon immune activation and the onset of inflammation, as well as in the presence of certain members of the microbiota. However, many experiments have not adequately incorporated study design to detect such immune influences, including using proper control groups, precise sampling and timing, and measures beyond broad-scale descriptions of dysbiosis for microbial analysis. We discuss these and other challenges in the context of current understanding of chronic inflammatory disease.
Collapse
|
174
|
The Dynamic Changes of Gut Microbiota in Muc2 Deficient Mice. Int J Mol Sci 2018; 19:ijms19092809. [PMID: 30231491 PMCID: PMC6164417 DOI: 10.3390/ijms19092809] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 12/26/2022] Open
Abstract
Gut dysbiosis is associated with colitis-associated colorectal carcinogenesis, and the genetic deficiency of the Muc2 gene causes spontaneous development of colitis and colorectal cancer. Whether there are changes of gut microbiota and a linkage between the changes of microbiota and intestinal pathology in Muc2-/- mice are unclear. Muc2-/- and Muc2+/+ mice were generated by backcrossing from Muc2+/- mice, and the fecal samples were collected at different dates (48th, 98th, 118th, 138th, and 178th day). Gut microbiota were analyzed by high-throughput sequencing with the universal 16S rRNA primers (V3⁻V5 region). All mice were sacrificed at day 178 to collect colonic tissue and epithelial cells for the analysis of histopathology and inflammatory cytokines. On the 178th day, Muc2-/- mice developed colorectal chronic colitis, hyperplasia, adenomas and adenocarcinomas, and inflammatory cytokines (e.g., cyclooxygenase 2 (COX-2), interleukin 6 (IL-6), tumor necrosis factor-α (TNF-α), interleukin 1 β (IL-1β), i-kappa-B-kinase β (IKKβ)) were significantly increased in colonic epithelial cells of Muc2-/- mice. In general, structural segregation of gut microbiota was observed throughout the experimental time points between the Muc2-/- and Muc2+/+ mice. Impressively, in Muc2-/- mice, Alpha diversities reflected by Shannon and Chao indexes were higher, the phylum of Firmicutes was enriched and Bacteroidetes was decreased, and Desulfovibrio, Escherichia, Akkermansia, Turicibacter, and Erysipelotrichaceae were significantly increased, but Lactobacilli and Lachnospiraceae were significantly decreased. Moreover, the abundance of Ruminococcaceae and butyrate-producing bacteria was significantly higher in the Muc2-/- mice. There were significant differences of gut microbiota between Muc2-/- and Muc2+/+ mice. The dynamic changes of microbiota might contribute to the development of colitis and colitis-associated colorectal carcinogenesis. Therefore, this study revealed specific functional bacteria in the development of colitis and colitis-associated colorectal carcinogenesis, which will benefit the development of preventive and therapeutic strategies for chronic inflammation and its malignant transformation.
Collapse
|
175
|
Chen G, Huang B, Fu S, Li B, Ran X, He D, Jiang L, Li Y, Liu B, Xie L, Liu J, Wang W. G Protein-Coupled Receptor 109A and Host Microbiota Modulate Intestinal Epithelial Integrity During Sepsis. Front Immunol 2018; 9:2079. [PMID: 30271409 PMCID: PMC6146091 DOI: 10.3389/fimmu.2018.02079] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 08/22/2018] [Indexed: 01/02/2023] Open
Abstract
The intestinal epithelial barrier is important to mucosal immunity, although how it is maintained after damage is unclear. Here, we show that G protein-coupled receptor 109A (GPR109A) supports barrier integrity and decreases mortality in a mouse cecum ligation and puncture (CLP) sepsis model. Data from 16S RNA sequencing showed that the intestinal microbiota of WT and Gpr109a−/− mice clustered differently and their compositions were disrupted after CLP surgery. GPR109A-deficient mice showed increased mortality, intestinal permeability, altered inflammation, and lower tight junction gene expression. After eliminating the intestinal flora with antibiotics, all experimental mice died within 48 h of CLP surgery. This demonstrates the critical role of the gut microbiota in CLP-induced sepsis. Importantly, mortality and other pathologies in the model were decreased after Gpr109a−/− mice received WT gut microbiota. These findings indicate that GPR109A regulates the gut microbiota, contributing to intestinal epithelial barrier integrity and decreased mortality in CLP-induced sepsis.
Collapse
Affiliation(s)
- Guangxin Chen
- College of Veterinary Medicine, Jilin University, Changchun, China.,Institutes of Biomedical Sciences, Shanxi University, Taiyuan, China
| | - Bingxu Huang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Bai Li
- First Hospital of Jilin University, Changchun, China
| | - Xin Ran
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Dewei He
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Liqiang Jiang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yuhang Li
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Bingdong Liu
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China.,First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Liwei Xie
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratory of Applied Microbiology, Guangdong Institute of Microbiology, Guangzhou, China
| | - Juxiong Liu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Wei Wang
- College of Veterinary Medicine, Jilin University, Changchun, China
| |
Collapse
|
176
|
Truax AD, Chen L, Tam JW, Cheng N, Guo H, Koblansky AA, Chou WC, Wilson JE, Brickey WJ, Petrucelli A, Liu R, Cooper DE, Koenigsknecht MJ, Young VB, Netea MG, Stienstra R, Sartor RB, Montgomery SA, Coleman RA, Ting JPY. The Inhibitory Innate Immune Sensor NLRP12 Maintains a Threshold against Obesity by Regulating Gut Microbiota Homeostasis. Cell Host Microbe 2018; 24:364-378.e6. [PMID: 30212649 PMCID: PMC6161752 DOI: 10.1016/j.chom.2018.08.009] [Citation(s) in RCA: 143] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/19/2018] [Accepted: 08/03/2018] [Indexed: 12/16/2022]
Abstract
In addition to high-fat diet (HFD) and inactivity, inflammation and microbiota composition contribute to obesity. Inhibitory immune receptors, such as NLRP12, dampen inflammation and are important for resolving inflammation, but their role in obesity is unknown. We show that obesity in humans correlates with reduced expression of adipose tissue NLRP12. Similarly, Nlrp12-/- mice show increased weight gain, adipose deposition, blood glucose, NF-κB/MAPK activation, and M1-macrophage polarization. Additionally, NLRP12 is required to mitigate HFD-induced inflammasome activation. Co-housing with wild-type animals, antibiotic treatment, or germ-free condition was sufficient to restrain inflammation, obesity, and insulin tolerance in Nlrp12-/- mice, implicating the microbiota. HFD-fed Nlrp12-/- mice display dysbiosis marked by increased obesity-associated Erysipelotrichaceae, but reduced Lachnospiraceae family and the associated enzymes required for short-chain fatty acid (SCFA) synthesis. Lachnospiraceae or SCFA administration attenuates obesity, inflammation, and dysbiosis. These findings reveal that Nlrp12 reduces HFD-induced obesity by maintaining beneficial microbiota.
Collapse
Affiliation(s)
- Agnieszka D Truax
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Liang Chen
- Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Jason W Tam
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Ning Cheng
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Oral and Craniofacial Biomedicine Program, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Hao Guo
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - A Alicia Koblansky
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Wei-Chun Chou
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Justin E Wilson
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - W June Brickey
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Alex Petrucelli
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Rongrong Liu
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Daniel E Cooper
- Department of Nutrition, Gillings School of Global Public Health, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Mark J Koenigsknecht
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan, Ann Arbor, MI, USA
| | - Vincent B Young
- Department of Internal Medicine, Division of Infectious Diseases, University of Michigan, Ann Arbor, MI, USA
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Rinke Stienstra
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - R Balfour Sartor
- Center for Gastrointestinal Biology and Disease, Departments of Medicine, Microbiology, and Immunology, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Stephanie A Montgomery
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Pathology and Laboratory Medicine, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Rosalind A Coleman
- Department of Nutrition, Gillings School of Global Public Health, UNC-Chapel Hill, Chapel Hill, NC, USA
| | - Jenny P-Y Ting
- Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Genetics, UNC-Chapel Hill, Chapel Hill, NC, USA; Department of Microbiology and Immunology, UNC-Chapel Hill, Chapel Hill, NC, USA.
| |
Collapse
|
177
|
Günther J, Seyfert HM. The first line of defence: insights into mechanisms and relevance of phagocytosis in epithelial cells. Semin Immunopathol 2018; 40:555-565. [PMID: 30182191 PMCID: PMC6223882 DOI: 10.1007/s00281-018-0701-1] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/09/2018] [Indexed: 12/16/2022]
Abstract
Epithelial tissues cover most of the external and internal surfaces of the body and its organs. Inevitably, these tissues serve as first line of defence against inorganic, organic, and microbial intruders. Epithelial cells are the main cell type of these tissues. Besides their function as cellular barrier, there is growing evidence that epithelial cells are of particular relevance as initial sensors of danger and also as executers of adequate defence responses. These cells feature various essential functions to maintain tissue integrity in health and disease. In this review, we survey some of the different innate immune functions of epithelial cells in mucosal tissues being constantly exposed to a plethora of harmless contaminants but also of pathogens. We discuss how epithelial cells avoid inadequate immune responses in such conditions. In particular, we will focus on the diverse types and mechanisms of phagocytosis used by epithelial cells to not only maintain homeostasis but to also harness the host response against invading pathogens.
Collapse
Affiliation(s)
- Juliane Günther
- Institute for Genome Biology, Leibniz Institute for Farm Animal Biology, 18196, Dummerstorf, Germany.
| | - Hans-Martin Seyfert
- Institute for Genome Biology, Leibniz Institute for Farm Animal Biology, 18196, Dummerstorf, Germany
| |
Collapse
|
178
|
Impaired Autophagy in Intestinal Epithelial Cells Alters Gut Microbiota and Host Immune Responses. Appl Environ Microbiol 2018; 84:AEM.00880-18. [PMID: 30006408 DOI: 10.1128/aem.00880-18] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/09/2018] [Indexed: 02/07/2023] Open
Abstract
Establishing and maintaining beneficial interactions between the host and associated gut microbiota are pivotal requirements for host health. Autophagy is an important catabolic recycling pathway that degrades long-lived proteins and some organelles by lysosome to maintain cellular homeostasis. Although impaired autophagy is thought to be closely correlated with Crohn's disease (CD), the functional role of autophagy in the maintenance of gut microbiota is poorly understood. As autophagy-related 5 (Atg5) is a key gene associated with the extension of the phagophoric membrane in autophagic vesicles, we established a gut-specific Atg5 knockout mouse model, and we found that the disruption of autophagic flux in the intenstinal epithelium cells dramatically altered the composition of the gut microbiota and reduced alpha diversity. Microbial function prediction indicated that the pathway allocated for infectious diseases was enriched in Atg5-/- mice. "Candidatus Arthromitus" and the Pasteurellaceae family were increased in Atg5-/- mice, whereas Akkermansia muciniphila and the Lachnospiraceae family were reduced. Transcriptome analysis revealed that two key inflammatory bowel disease (IBD)-related transcription factors, RORC and TBX21, of host cells were upregulated in Atg5-/- mice, thus elevating the Muc2-related immunological response. The findings suggest that intestinal autophagy plays a vital role in modulating the diversity and composition of gut microbiota.IMPORTANCE The homeostasis of host-microbiota interactions is of great importance to host health. Previous studies demonstrated that disruption of autophagy was linked to inflammatory bowel disease. However, the interaction mechanism of gut microbiota regulated by autophagy was obscure. In an intestinal epithelium-specific autophagy-related 5 (Atg5) knockout mouse model, we observed a significant alteration and decreased diversity in the gut microbiota of Atg5-deficient mice compared with that of wild-type mice. Although the numbers of some organisms (e.g., Akkermansia muciniphila and members of the Lachnospiraceae family) associated with the control of inflammation decreased, those of proinflammationory bacteria (e.g., "Candidatus Arthromitus") and potential pathogens (the Pasteurellaceae family) increased in Atg5-/- mice. Differential gene expression analysis revealed that two key genes, RORC and TBX21, involved in inflammatory bowel disease were upregulated in Atg5-/- mice. Our study suggests that Atg5 deficiency results in an imbalance of the host-microbe interaction and deterioration of the gut microenvironment.
Collapse
|
179
|
The Dual Immunoregulatory function of Nlrp12 in T Cell-Mediated Immune Response: Lessons from Experimental Autoimmune Encephalomyelitis. Cells 2018; 7:cells7090119. [PMID: 30150571 PMCID: PMC6162721 DOI: 10.3390/cells7090119] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/13/2022] Open
Abstract
Although the etiology of multiple sclerosis (MS) remains enigmatic, the role of T cells is unquestionably central in this pathology. Immune cells respond to pathogens and danger signals via pattern-recognition receptors (PRR). Several reports implicate Nlrp12, an intracellular PRR, in the development of a mouse MS-like disease, called Experimental Autoimmune Encephalomyelitis (EAE). In this study, we used induced and spontaneous models of EAE, as well as in vitro T cell assays, to test the hypothesis that Nlrp12 inhibits Th1 response and prevents T-cell mediated autoimmunity. We found that Nlrp12 plays a protective role in induced EAE by reducing IFNγ/IL-4 ratio in lymph nodes, whereas it potentiates the development of spontaneous EAE (spEAE) in 2D2 T cell receptor (TCR) transgenic mice. Looking into the mechanism of Nlrp12 activity in T cell response, we found that it inhibits T cell proliferation and suppresses Th1 response by reducing IFNγ and IL-2 production. Following TCR activation, Nlrp12 inhibits Akt and NF-κB phosphorylation, while it has no effect on S6 phosphorylation in the mTOR pathway. In conclusion, we propose a model that can explain the dual immunoregulatory function of Nlrp12 in EAE. We also propose a model explaining the molecular mechanism of Nlrp12-dependent regulation of T cell response.
Collapse
|
180
|
Mijan MA, Lim BO. Diets, functional foods, and nutraceuticals as alternative therapies for inflammatory bowel disease: Present status and future trends. World J Gastroenterol 2018; 24:2673-2685. [PMID: 29991873 PMCID: PMC6034142 DOI: 10.3748/wjg.v24.i25.2673] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/19/2018] [Accepted: 06/09/2018] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel disease (IBD) is a serious health concern among western societies. The disease is also on the rise in some East Asian countries and in Australia. Health professionals and dietitians around the world are facing an unprecedented challenge to prevent and control the increasing prevalence of IBD. The current therapeutic strategy that includes drugs and biological treatments is inefficient and are associated with adverse health consequences. In this context, the use of natural products is gaining worldwide attention. In vivo studies and clinical evidence suggest that well-planned dietary regimens with specific nutrients can alleviate gastrointestinal inflammation by modulating inflammatory cytokines, such as tumor necrosis factor α (TNF-α), interleukin 1 (IL-1), IL-6, IL-1β, and IL-10. Alternatively, the avoidance of high-fat and high-carbohydrate diets is regarded as an effective tool to eliminate the causes of IBD. Many functional foods and bioactive components have received attention for showing strong therapeutic effects against IBD. Both animal and human studies suggest that bioactive functional foods can ameliorate IBD by downregulating the pro-inflammatory signaling pathways, such as nuclear factor κB, STAT1, STAT6, and pro-inflammatory cytokines, including IL-1β, IL-4, IL-6, COX-2, TNF-α, and interferon γ. Therefore, functional foods and diets have the potential to alleviate IBD by modulating the underlying pathogenic mechanisms. Future comprehensive studies are needed to corroborate the potential roles of functional foods and diets in the prevention and control of IBD.
Collapse
Affiliation(s)
- Mohammad Al Mijan
- Department of Integrated Biosciences, College of Biomedical & Health Science, Konkuk University, Chungju 380-701, South Korea
| | - Beong Ou Lim
- Department of Integrated Biosciences, College of Biomedical & Health Science, Konkuk University, Chungju 380-701, South Korea
| |
Collapse
|
181
|
Abstract
The intestinal tract is a site of intense immune cell activity that is poised to mount an effective response against a pathogen and yet maintain tolerance toward commensal bacteria and innocuous dietary antigens. The role of cell death in gut pathologies is particularly important as the intestinal epithelium undergoes self-renewal every 4-7 days through a continuous process of cell death and cell division. Cell death is also required for removal of infected, damaged, and cancerous cells. Certain forms of cell death trigger inflammation through release of damage-associated molecular patterns. Further, molecules involved in cell death decisions also moonlight as critical nodes in immune signaling. The manner of cell death is, therefore, highly instructive of the immunological consequences that ensue. Perturbations in cell death pathways can impact the regulation of the immune system with deleterious consequences. In this review, we discuss the various forms of cell death with a special emphasis on lytic cell death pathways of pyroptosis and necroptosis and their implications in inflammation and cancer in the gut. Understanding the implications of distinct cell death pathways will help in the development of therapeutic interventions in intestinal pathologies.
Collapse
Affiliation(s)
- Deepika Sharma
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, USA
| | | |
Collapse
|
182
|
Prossomariti A, Sokol H, Ricciardiello L. Nucleotide-Binding Domain Leucine-Rich Repeat Containing Proteins and Intestinal Microbiota: Pivotal Players in Colitis and Colitis-Associated Cancer Development. Front Immunol 2018; 9:1039. [PMID: 29868004 PMCID: PMC5960679 DOI: 10.3389/fimmu.2018.01039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 04/26/2018] [Indexed: 12/14/2022] Open
Abstract
The nucleotide-binding domain leucine-rich repeat containing (NLR) proteins play a fundamental role in innate immunity and intestinal tissue repair. A dysbiotic intestinal microbiota, developed as a consequence of alterations in NLR proteins, has recently emerged as a crucial hit for the development of ulcerative colitis (UC) and colitis-associated cancer (CAC). The concept of the existence of functional axes interconnecting bacteria with NLR proteins in a causal role in intestinal inflammation and CAC aroused a great interest for the potential development of preventive and therapeutic strategies against UC and CAC. However, the most recent scientific evidence, which highlights many confounding factors in studies based on microbiota characterization, underlines the need for an in-depth reconsideration of the data obtained until now. The purpose of this review is to discuss the recent findings concerning the cross talk between the NLR signaling and the intestinal microbiota in UC and CAC development, and to highlight the open issues that should be explored and addressed in future studies.
Collapse
Affiliation(s)
- Anna Prossomariti
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy.,Center for Applied Biomedical Research (CRBA), S. Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy
| | - Harry Sokol
- Sorbonne Université, École normale supérieure, PSL Research University, CNRS, INSERM, AP-HP, Hôpital Saint-Antoine, Laboratoire de biomolécules, LBM, Paris, France.,INRA, UMR1319 Micalis & AgroParisTech, Jouy en Josas, France
| | - Luigi Ricciardiello
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| |
Collapse
|
183
|
Wang J, Chen L, Zhao N, Xu X, Xu Y, Zhu B. Of genes and microbes: solving the intricacies in host genomes. Protein Cell 2018; 9:446-461. [PMID: 29611114 PMCID: PMC5960464 DOI: 10.1007/s13238-018-0532-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 02/28/2018] [Indexed: 12/14/2022] Open
Abstract
Microbiome research is a quickly developing field in biomedical research, and we have witnessed its potential in understanding the physiology, metabolism and immunology, its critical role in understanding the health and disease of the host, and its vast capacity in disease prediction, intervention and treatment. However, many of the fundamental questions still need to be addressed, including the shaping forces of microbial diversity between individuals and across time. Microbiome research falls into the classical nature vs. nurture scenario, such that host genetics shape part of the microbiome, while environmental influences change the original course of microbiome development. In this review, we focus on the nature, i.e., the genetic part of the equation, and summarize the recent efforts in understanding which parts of the genome, especially the human and mouse genome, play important roles in determining the composition and functions of microbial communities, primarily in the gut but also on the skin. We aim to present an overview of different approaches in studying the intricate relationships between host genetic variations and microbes, its underlying philosophy and methodology, and we aim to highlight a few key discoveries along this exploration, as well as current pitfalls. More evidence and results will surely appear in upcoming studies, and the accumulating knowledge will lead to a deeper understanding of what we could finally term a "hologenome", that is, the organized, closely interacting genome of the host and the microbiome.
Collapse
Affiliation(s)
- Jun Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, 100101, China.
| | - Liang Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, 100101, China
| | - Na Zhao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, 100101, China
| | - Xizhan Xu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yakun Xu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Baoli Zhu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Science, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Collaborative Innovation Centre for Diagnosis and Treatment of Infectious Diseases First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
184
|
Maisonneuve C, Irrazabal T, Martin A, Girardin SE, Philpott DJ. The Impact of the Gut Microbiome on Colorectal Cancer. ANNUAL REVIEW OF CANCER BIOLOGY-SERIES 2018. [DOI: 10.1146/annurev-cancerbio-030617-050240] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Charles Maisonneuve
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada;,
| | - Thergiory Irrazabal
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada;,
| | - Alberto Martin
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada;,
| | - Stephen E. Girardin
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada;,
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
| | - Dana J. Philpott
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada;,
| |
Collapse
|
185
|
Multigene sequencing reveals heterogeneity of NLRP12-related autoinflammatory disorders. Rheumatol Int 2018; 38:887-893. [DOI: 10.1007/s00296-018-4002-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/26/2018] [Indexed: 10/17/2022]
|
186
|
Awad F, Assrawi E, Louvrier C, Jumeau C, Georgin-Lavialle S, Grateau G, Amselem S, Giurgea I, Karabina SA. Inflammasome biology, molecular pathology and therapeutic implications. Pharmacol Ther 2018; 187:133-149. [PMID: 29466702 DOI: 10.1016/j.pharmthera.2018.02.011] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Inflammasomes are intracellular multiprotein signaling complexes, mainly present in myeloid cells. They commonly assemble around a cytoplasmic receptor of the nucleotide-binding leucine-rich repeat containing receptor (NLR) family, although other cytoplasmic receptors like pyrin have been shown to form inflammasomes. The nucleation of the multiprotein scaffolding platform occurs upon detection of a microbial, a danger or a homeostasis pattern by the receptor that will, most commonly, associate with the adaptor protein ASC (apoptosis-associated speck-like protein containing a CARD) through homotypic domain interactions resulting in recruitment of procaspase-1. This will lead to the autoproteolytic activation of caspase-1, which regulates the secretion of proinflammatory IL1β and IL18 cytokines and pyroptosis, a caspase-1-mediated form of cell death. Pyroptosis occurs through cleavage of Gasdermin D, a membrane pore forming protein. Recently, non-canonical inflammasomes have been described, which directly sense intracellular pathogens through caspase-4 and -5 in humans, leading to pyroptosis. Inflammasomes are important in host defense; however, a deregulated activity is associated with a number of inflammatory, immune and metabolic disorders. Furthermore, mutations in inflammasome receptor coding genes are causal for an increasing number of rare autoinflammatory diseases. Biotherapies targeting the products of inflammasome activation as well as molecules that directly or indirectly inhibit inflammasome nucleation and activation are promising therapeutic areas. This review discusses recent advances in inflammasome biology, the molecular pathology of several inflammasomes, and current therapeutic approaches in autoinflammatory diseases and in selected common multifactorial inflammasome-mediated disorders.
Collapse
Affiliation(s)
- Fawaz Awad
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France
| | - Eman Assrawi
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France
| | - Camille Louvrier
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France
| | - Claire Jumeau
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France
| | - Sophie Georgin-Lavialle
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Tenon, Service de Médecine interne, Paris, F-75012, France
| | - Gilles Grateau
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Hôpital Tenon, Service de Médecine interne, Paris, F-75012, France
| | - Serge Amselem
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France.
| | - Irina Giurgea
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France.
| | - Sonia-Athina Karabina
- Sorbonne Université, INSERM, UMR_S 933, Assistance Publique Hôpitaux de Paris, Département de Génétique médicale, Hôpital Trousseau, Paris, F-75012, France.
| |
Collapse
|
187
|
Ma N, Guo P, Zhang J, He T, Kim SW, Zhang G, Ma X. Nutrients Mediate Intestinal Bacteria-Mucosal Immune Crosstalk. Front Immunol 2018; 9:5. [PMID: 29416535 PMCID: PMC5787545 DOI: 10.3389/fimmu.2018.00005] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/03/2018] [Indexed: 12/20/2022] Open
Abstract
The intestine is the shared site of nutrient digestion, microbiota colonization and immune cell location and this geographic proximity contributes to a large extent to their interaction. The onset and development of a great many diseases, such as inflammatory bowel disease and metabolic syndrome, will be caused due to the imbalance of body immune. As competent assistants, the intestinal bacteria are also critical in disease prevention and control. Moreover, the gut commensal bacteria are essential for development and normal operation of immune system and the pathogens are also closely bound up with physiological disorders and diseases mediated by immune imbalance. Understanding how our diet and nutrient affect bacterial composition and dynamic function, and the innate and adaptive status of our immune system, represents not only a research need but also an opportunity or challenge to improve health. Herein, this review focuses on the recent discoveries about intestinal bacteria–immune crosstalk and nutritional regulation on their interplay, with an aim to provide novel insights that can aid in understanding their interactions.
Collapse
Affiliation(s)
- Ning Ma
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing, China
| | - Pingting Guo
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing, China
| | - Jie Zhang
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing, China.,Animal Husbandry and Veterinary Department, Beijing Vocational College of Agriculture, Beijing, China
| | - Ting He
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing, China
| | - Sung Woo Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC, United States
| | - Guolong Zhang
- Department of Animal Science, Oklahoma State University, Stillwater, OK, United States
| | - Xi Ma
- State Key Laboratory of Animal Nutrition, Department of Animal Nutrition and Feed Science, China Agricultural University, Beijing, China.,Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States.,Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX, United States
| |
Collapse
|
188
|
Gharagozloo M, Gris KV, Mahvelati T, Amrani A, Lukens JR, Gris D. NLR-Dependent Regulation of Inflammation in Multiple Sclerosis. Front Immunol 2018; 8:2012. [PMID: 29403486 PMCID: PMC5778124 DOI: 10.3389/fimmu.2017.02012] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 12/28/2017] [Indexed: 12/22/2022] Open
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS) associated with inappropriate activation of lymphocytes, hyperinflammatory responses, demyelination, and neuronal damage. In the past decade, a number of biological immunomodulators have been developed that suppress the peripheral immune responses and slow down the progression of the disease. However, once the inflammation of the CNS has commenced, it can cause serious permanent neuronal damage. Therefore, there is a need for developing novel therapeutic approaches that control and regulate inflammatory responses within the CNS. Nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs) are intracellular regulators of inflammation expressed by many cell types within the CNS. They redirect multiple signaling pathways initiated by pathogens and molecules released by injured tissues. NLR family members include positive regulators of inflammation, such as NLRP3 and NLRC4 and anti-inflammatory NLRs, such as NLRX1 and NLRP12. They exert immunomodulatory effect at the level of peripheral immune responses, including antigen recognition and lymphocyte activation and differentiation. Also, NLRs regulate tissue inflammatory responses. Understanding the molecular mechanisms that are placed at the crossroad of innate and adaptive immune responses, such as NLR-dependent pathways, could lead to the discovery of new therapeutic targets. In this review, we provide a summary of the role of NLRs in the pathogenesis of MS. We also summarize how anti-inflammatory NLRs regulate the immune response within the CNS. Finally, we speculate the therapeutic potential of targeting NLRs in MS.
Collapse
Affiliation(s)
- Marjan Gharagozloo
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Katsiaryna V. Gris
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Tara Mahvelati
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - Abdelaziz Amrani
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| | - John R. Lukens
- Center for Brain Immunology and Glia, Department of Neuroscience, School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Denis Gris
- Program of Immunology, Faculty of Medicine and Health Sciences, Department of Pediatrics, CR-CHUS, University of Sherbrooke, Sherbrooke, QC, Canada
| |
Collapse
|
189
|
Jin T, Huang M, Jiang J, Smith P, Xiao TS. Crystal structure of human NLRP12 PYD domain and implication in homotypic interaction. PLoS One 2018; 13:e0190547. [PMID: 29293680 PMCID: PMC5749810 DOI: 10.1371/journal.pone.0190547] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 12/15/2017] [Indexed: 11/23/2022] Open
Abstract
NLRP12 is a NOD-like receptor that plays multiple roles in both inflammation and tumorigenesis. Despite the importance, little is known about its mechanism of action at the molecular level. Here, we report the crystal structure of NLRP12 PYD domain at 1.70 Å fused with an maltose-binding protein (MBP) tag. Interestingly, the PYD domain forms a dimeric configuration through a disulfide bond in the crystal. The possible biological significance is discussed in the context of ROS induced NF-κB activation.
Collapse
Affiliation(s)
- Tengchuan Jin
- Laboratory of structural immunology, CAS Key Laboratory of innate immunity and chronic diseases, CAS Center for Excellence in Molecular Cell Science, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui, PRC
- Structural Immunobiology Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail: (TJ); (TSX)
| | - Mo Huang
- Structural Immunobiology Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Jiansheng Jiang
- Structural Immunobiology Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Patrick Smith
- Structural Immunobiology Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Tsan Sam Xiao
- Structural Immunobiology Unit, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio, United States of America
- * E-mail: (TJ); (TSX)
| |
Collapse
|
190
|
Song M, Li X, Zhang X, Shi H, Vos MB, Wei X, Wang Y, Gao H, Rouchka EC, Yin X, Zhou Z, Prough RA, Cave MC, McClain CJ. Dietary copper-fructose interactions alter gut microbial activity in male rats. Am J Physiol Gastrointest Liver Physiol 2018; 314:G119-G130. [PMID: 29025734 PMCID: PMC5866377 DOI: 10.1152/ajpgi.00378.2016] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Dietary copper-fructose interactions contribute to the development of nonalcoholic fatty liver disease (NAFLD). Gut microbiota play critical roles in the pathogenesis of NAFLD. The aim of this study was to determine the effect of different dietary doses of copper and their interactions with high fructose on gut microbiome. Male weanling Sprague-Dawley rats were fed diets with adequate copper (6 ppm CuA), marginal copper (1.5 ppm CuM) (low copper), or supplemented copper (20 ppm CuS) (high copper) for 4 wk. Deionized water or deionized water containing 30% fructose (wt/vol) was given ad libitum. Copper status, liver enzymes, gut barrier function, and gut microbiome were evaluated. Both low- and high-copper diets led to liver injury in high-fructose-fed rats, and this was associated with gut barrier dysfunction, as shown by the markedly decreased tight junction proteins and increased gut permeability. 16S rDNA sequencing analysis revealed distinct alterations of the gut microbiome associated with dietary low- and high-copper/high-fructose feeding. The common features of the alterations of the gut microbiome were the increased abundance of Firmicutes and the depletion of Akkermansia. However, they differed mainly within the phylum Firmicutes. Our data demonstrated that a complex interplay among host, microbes, and dietary copper-fructose interaction regulates gut microbial metabolic activity, which may contribute to the development of liver injury and hepatic steatosis. The distinct alterations of gut microbial activity, which were associated with the different dietary doses of copper and fructose, imply that separate mechanism(s) may be involved. NEW & NOTEWORTHY First, dietary low- and high-copper/high-fructose-induced liver injury are associated with distinct alterations of gut microbiome. Second, dietary copper level plays a critical role in maintaining the gut barrier integrity, likely by acting on the intestinal tight junction proteins and the protective commensal bacteria Akkermansia. Third, the alterations of gut microbiome induced by dietary low and high copper with or without fructose differ mainly within the phylum Firmicutes.
Collapse
Affiliation(s)
- Ming Song
- 1Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, Kentucky,4Hepatobiology and Toxicology Center, University of Louisville School of Medicine, Louisville, Kentucky
| | - Xiaohong Li
- 8Bioinformatics Core. University of Louisville School of Medicine, Louisville, Kentucky
| | - Xiang Zhang
- 2Department of Chemistry, University of Louisville School of Medicine, Louisville, Kentucky,3Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky,4Hepatobiology and Toxicology Center, University of Louisville School of Medicine, Louisville, Kentucky,5University of Louisville Alcohol Research Center, University of Louisville School of Medicine, Louisville, Kentucky,6Center for Regulatory and Environmental Analytical Metabolomics, University of Louisville School of Medicine, Louisville, Kentucky
| | - Hongxue Shi
- 3Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky
| | - Miriam B. Vos
- 10Department of Pediatrics, Emory University School of Medicine, and Children’s Healthcare of Atlanta, Atlanta, Georgia
| | - Xiaoli Wei
- 2Department of Chemistry, University of Louisville School of Medicine, Louisville, Kentucky,6Center for Regulatory and Environmental Analytical Metabolomics, University of Louisville School of Medicine, Louisville, Kentucky
| | - Yuhua Wang
- 13College of Food Science and Engineering, Jilin Agricultural University, Changchun, China
| | - Hong Gao
- 9Genomics Facility, University of Louisville School of Medicine, Louisville, Kentucky
| | - Eric C. Rouchka
- 8Bioinformatics Core. University of Louisville School of Medicine, Louisville, Kentucky
| | - Xinmin Yin
- 2Department of Chemistry, University of Louisville School of Medicine, Louisville, Kentucky,6Center for Regulatory and Environmental Analytical Metabolomics, University of Louisville School of Medicine, Louisville, Kentucky
| | - Zhanxiang Zhou
- 11Center for Translational Biomedical Research, University of North Carolina at Greensboro, Kannapolis, North Carolina,12Department of Nutrition, University of North Carolina at Greensboro, Kannapolis, North Carolina
| | - Russell A. Prough
- 7Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, Kentucky
| | - Matthew C. Cave
- 1Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, Kentucky,3Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky,4Hepatobiology and Toxicology Center, University of Louisville School of Medicine, Louisville, Kentucky,5University of Louisville Alcohol Research Center, University of Louisville School of Medicine, Louisville, Kentucky,7Department of Biochemistry and Molecular Genetics, University of Louisville School of Medicine, Louisville, Kentucky,14Robley Rex Louisville Veterans Afairs Medical Center, Louisville, Kentucky
| | - Craig J. McClain
- 1Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, Kentucky,3Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, Kentucky,4Hepatobiology and Toxicology Center, University of Louisville School of Medicine, Louisville, Kentucky,5University of Louisville Alcohol Research Center, University of Louisville School of Medicine, Louisville, Kentucky,14Robley Rex Louisville Veterans Afairs Medical Center, Louisville, Kentucky
| |
Collapse
|
191
|
Abstract
Inflammasome signalling is an emerging pillar of innate immunity and has a central role in the regulation of gastrointestinal health and disease. Activation of the inflammasome complex mediates both the release of the pro-inflammatory cytokines IL-1β and IL-18 and the execution of a form of inflammatory cell death known as pyroptosis. In most cases, these mediators of inflammation provide protection against bacterial, viral and protozoal infections. However, unchecked inflammasome activities perpetuate chronic inflammation, which underpins the molecular and pathophysiological basis of gastritis, IBD, upper and lower gastrointestinal cancer, nonalcoholic fatty liver disease and obesity. Studies have also highlighted an inflammasome signature in the maintenance of gut microbiota and gut-brain homeostasis. Harnessing the immunomodulatory properties of the inflammasome could transform clinical practice in the treatment of acute and chronic gastrointestinal and extragastrointestinal diseases. This Review presents an overview of inflammasome biology in gastrointestinal health and disease and describes the value of experimental and pharmacological intervention in the treatment of inflammasome-associated clinical manifestations.
Collapse
|
192
|
Kale SD, Ayubi T, Chung D, Tubau-Juni N, Leber A, Dang HX, Karyala S, Hontecillas R, Lawrence CB, Cramer RA, Bassaganya-Riera J. Modulation of Immune Signaling and Metabolism Highlights Host and Fungal Transcriptional Responses in Mouse Models of Invasive Pulmonary Aspergillosis. Sci Rep 2017; 7:17096. [PMID: 29213115 PMCID: PMC5719083 DOI: 10.1038/s41598-017-17000-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 11/20/2017] [Indexed: 02/04/2023] Open
Abstract
Incidences of invasive pulmonary aspergillosis, an infection caused predominantly by Aspergillus fumigatus, have increased due to the growing number of immunocompromised individuals. While A. fumigatus is reliant upon deficiencies in the host to facilitate invasive disease, the distinct mechanisms that govern the host-pathogen interaction remain enigmatic, particularly in the context of distinct immune modulating therapies. To gain insights into these mechanisms, RNA-Seq technology was utilized to sequence RNA derived from lungs of 2 clinically relevant, but immunologically distinct murine models of IPA on days 2 and 3 post inoculation when infection is established and active disease present. Our findings identify notable differences in host gene expression between the chemotherapeutic and steroid models at the interface of immunity and metabolism. RT-qPCR verified model specific and nonspecific expression of 23 immune-associated genes. Deep sequencing facilitated identification of highly expressed fungal genes. We utilized sequence similarity and gene expression to categorize the A. fumigatus putative in vivo secretome. RT-qPCR suggests model specific gene expression for nine putative fungal secreted proteins. Our analysis identifies contrasting responses by the host and fungus from day 2 to 3 between the two models. These differences may help tailor the identification, development, and deployment of host- and/or fungal-targeted therapeutics.
Collapse
Affiliation(s)
- Shiv D Kale
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA.
| | - Tariq Ayubi
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
| | - Dawoon Chung
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH, 03755, USA
- National Marine Biodiversity Institute of Korea, Seochun-gun, 33662, Republic of Korea
| | - Nuria Tubau-Juni
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
| | - Andrew Leber
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
| | - Ha X Dang
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
- McDonnell Genome Institute at Washington University, St. Louis, MO, 63108, USA
| | - Saikumar Karyala
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
| | - Raquel Hontecillas
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
| | | | - Robert A Cramer
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH, 03755, USA
| | - Josep Bassaganya-Riera
- Nutrional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech., Blacksburg, VA, 24061, USA
| |
Collapse
|
193
|
Mao Q, Jiang F, Yin R, Wang J, Xia W, Dong G, Ma W, Yang Y, Xu L, Hu J. Interplay between the lung microbiome and lung cancer. Cancer Lett 2017; 415:40-48. [PMID: 29197615 DOI: 10.1016/j.canlet.2017.11.036] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 11/23/2017] [Accepted: 11/27/2017] [Indexed: 12/31/2022]
Abstract
The human microbiome confers benefits or disease susceptibility to the human body through multiple pathways. Disruption of the symbiotic balance of the human microbiome is commonly found in systematic diseases such as diabetes, obesity, and chronic gastric diseases. Emerging evidence has suggested that dysbiosis of the microbiota may also play vital roles in carcinogenesis at multiple levels, e.g., by affecting metabolic, inflammatory, or immune pathways. Although the impact of the gut microbiome on the digestive cancer has been widely explored, few studies have investigated the interplay between the microbiome and lung cancer. Some recent studies have shown that certain microbes and microbiota dysbiosis are correlated with development of lung cancer. In this mini-review, we briefly summarize current research findings describing the relationship between the lung microbiome and lung cancer. We further discuss the potential mechanisms through which the lung microbiome may play a role in lung carcinogenesis and impact lung cancer treatment. A better knowledge of the interplay between the lung microbiome and lung cancer may promote the development of innovative strategies for early prevention and personalized treatment in lung cancer.
Collapse
Affiliation(s)
- Qixing Mao
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York NY10029, USA; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China; The Fourth Clinical College of Nanjing Medical University, Graduated College of Nanjing Medical University, Nanjing 210000, PR China
| | - Feng Jiang
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China
| | - Rong Yin
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China
| | - Jie Wang
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China
| | - Wenjie Xia
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China; The Fourth Clinical College of Nanjing Medical University, Graduated College of Nanjing Medical University, Nanjing 210000, PR China
| | - Gaochao Dong
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China
| | - Weidong Ma
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China; The Fourth Clinical College of Nanjing Medical University, Graduated College of Nanjing Medical University, Nanjing 210000, PR China
| | - Yao Yang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York NY10029, USA
| | - Lin Xu
- Department of Thoracic Surgery, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, PR China; Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing 210009, PR China.
| | - Jianzhong Hu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York NY10029, USA.
| |
Collapse
|
194
|
Abstract
PURPOSE OF REVIEW Microbiota is a major player in the pathogenesis of inflammatory bowel diseases (IBD) and colorectal cancer (CRC). Here, we summarize the key advances achieved in the past 18 months (ending June 2017) toward a better understanding of the role of microbiota in colitis and CRC development. RECENT FINDINGS Accumulating evidence shows the essential role of intestinal barrier function (e.g. mucus, IgA, LCN2, LYPD8) in protecting against bacteria-induced inflammation and tumor development. Numerous signaling pathways (e.g. TLRs and NLRs), metabolites (e.g. indole, bile acids, retinoic acid) and small noncoding RNAs (e.g. miRNA) have been identified as key mediators regulating host-microbe interactions in the intestine. Novel microbial drivers of colitis and tumorigenesis (e.g. Alistipes finegoldii, Atopobium parvalum, Peptostreptococcus anaerobius) have been identified and their disease-promoting activities have been described. SUMMARY IBD-associated colorectal cancer results from a complex breakdown of communication between the host and its microbiota, involving barrier function, immune signaling and metabolites.
Collapse
|
195
|
Ai XY, Qin Y, Liu HJ, Cui ZH, Li M, Yang JH, Zhong WL, Liu YR, Chen S, Sun T, Zhou HG, Yang C. Apigenin inhibits colonic inflammation and tumorigenesis by suppressing STAT3-NF-κB signaling. Oncotarget 2017; 8:100216-100226. [PMID: 29245972 PMCID: PMC5725014 DOI: 10.18632/oncotarget.22145] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 08/17/2017] [Indexed: 12/15/2022] Open
Abstract
Apigenin is a naturally occurring compound with anti-inflammatory, antioxidant, and anticancer properties. Here, we investigated the effects of apigeninin inflammatory bowel disease (IBD) and colitis-associated cancer (CAC). Apigenin effectively inhibited ulcerative colitis, a type of IBD, and CAC. Apigenin decreased myeloperoxidase (MPO), inflammatory cytokine and COX-2 levels, and it attenuated inflammatory cell infiltration in treated colon tissues as compared to untreated model colon tissues. Apigenin also reduced NF-κB and STAT3 activity in vitro and in vivo, thereby inhibiting inflammation and inflammation-induced carcinogenesis. Thus apigenin appears to inhibit inflammation and inflammation-induced carcinogenesisin IBD and CAC by suppressing STAT3-NF-κB signaling.
Collapse
Affiliation(s)
- Xiao-Yu Ai
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China
| | - Yuan Qin
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Hui-Jua Liu
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Zhan-Hong Cui
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Meng Li
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Jia-Huan Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Wei-Long Zhong
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Yan-Rong Liu
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Shuang Chen
- Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Tao Sun
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Hong-Gang Zhou
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| | - Cheng Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, China.,Tianjin Key Laboratory of Molecular Drug Research, Tianjin International Joint Academy of Biomedicine, Tianjin, China
| |
Collapse
|
196
|
Corrigendum: NLRP12 attenuates colon inflammation by maintaining colonic microbial diversity and promoting protective commensal bacterial growth. Nat Immunol 2017; 18:1270. [PMID: 29044233 DOI: 10.1038/ni1117-1270b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This corrects the article DOI: 10.1038/ni.3690.
Collapse
|
197
|
Lei-Leston AC, Murphy AG, Maloy KJ. Epithelial Cell Inflammasomes in Intestinal Immunity and Inflammation. Front Immunol 2017; 8:1168. [PMID: 28979266 PMCID: PMC5611393 DOI: 10.3389/fimmu.2017.01168] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/04/2017] [Indexed: 12/12/2022] Open
Abstract
Pattern recognition receptors (PRR), such as NOD-like receptors (NLRs), sense conserved microbial signatures, and host danger signals leading to the coordination of appropriate immune responses. Upon activation, a subset of NLR initiate the assembly of a multimeric protein complex known as the inflammasome, which processes pro-inflammatory cytokines and mediates a specialized form of cell death known as pyroptosis. The identification of inflammasome-associated genes as inflammatory bowel disease susceptibility genes implicates a role for the inflammasome in intestinal inflammation. Despite the fact that the functional importance of inflammasomes within immune cells has been well established, the contribution of inflammasome expression in non-hematopoietic cells remains comparatively understudied. Given that intestinal epithelial cells (IEC) act as a barrier between the host and the intestinal microbiota, inflammasome expression by these cells is likely important for intestinal immune homeostasis. Accumulating evidence suggests that the inflammasome plays a key role in shaping epithelial responses at the host-lumen interface with many inflammasome components highly expressed by IEC. Recent studies have exposed functional roles of IEC inflammasomes in mucosal immune defense, inflammation, and tumorigenesis. In this review, we present the main features of the predominant inflammasomes and their effector mechanisms contributing to intestinal homeostasis and inflammation. We also discuss existing controversies in the field and open questions related to their implications in disease. A comprehensive understanding of the molecular basis of intestinal inflammasome signaling could hold therapeutic potential for clinical translation.
Collapse
Affiliation(s)
- Andrea C Lei-Leston
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Alison G Murphy
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Kevin J Maloy
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| |
Collapse
|
198
|
Benedek G, Zhang J, Nguyen H, Kent G, Seifert HA, Davin S, Stauffer P, Vandenbark AA, Karstens L, Asquith M, Offner H. Estrogen protection against EAE modulates the microbiota and mucosal-associated regulatory cells. J Neuroimmunol 2017; 310:51-59. [PMID: 28778445 PMCID: PMC5570519 DOI: 10.1016/j.jneuroim.2017.06.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 06/19/2017] [Indexed: 01/22/2023]
Abstract
Sex hormones promote immunoregulatory effects on multiple sclerosis. In the current study we evaluated the composition of the gut microbiota and the mucosal-associated regulatory cells in estrogen or sham treated female mice before and after autoimmune encephalomyelitis (EAE) induction. Treatment with pregnancy levels of estrogen induces changes in the composition and diversity of gut microbiota. Additionally, estrogen prevents EAE-associated changes in the gut microbiota and might promote the enrichment of bacteria that are associated with immune regulation. Our results point to a possible cross-talk between the sex hormones and the gut microbiota, which could promote neuroprotection.
Collapse
MESH Headings
- Animals
- Antigens, CD/metabolism
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/chemically induced
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Estrogens/therapeutic use
- Feces/microbiology
- Female
- Interleukin-10/genetics
- Interleukin-10/metabolism
- Intestines/drug effects
- Intestines/microbiology
- Leukocytes/drug effects
- Lymph Nodes/drug effects
- Lymph Nodes/pathology
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- Microbiota/drug effects
- Mucous Membrane/drug effects
- Mucous Membrane/pathology
- Myelin-Oligodendrocyte Glycoprotein/toxicity
- Peptide Fragments/toxicity
- RNA, Ribosomal, 16S/genetics
- RNA, Ribosomal, 16S/metabolism
- Spinal Cord/pathology
- Time Factors
Collapse
Affiliation(s)
- Gil Benedek
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Jun Zhang
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Ha Nguyen
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Gail Kent
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Hilary A Seifert
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Sean Davin
- Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Patrick Stauffer
- Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Arthur A Vandenbark
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA; Department of Molecular Microbiology & Immunology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Lisa Karstens
- Division of Bioinformatics and Computational Biology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA; Division of Urogynecology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Mark Asquith
- Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA
| | - Halina Offner
- Neuroimmunology Research, VA Portland Health Care System, 3710 SW U.S. Veterans Hospital Rd, Portland, OR 97239, USA; Department of Neurology, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA; Department of Anesthesiology and Perioperative Medicine, Oregon Health & Science University, 3181 SW Sam Jackson Park Rd, Portland, OR 97239, USA.
| |
Collapse
|
199
|
Erratum: NLRP12 attenuates colon inflammation by maintaining colonic microbial diversity and promoting protective commensal bacterial growth. Nat Immunol 2017; 18:951. [PMID: 28722719 DOI: 10.1038/ni0817-951e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
200
|
Lau JMF, Dombrowski Y. The innate immune receptor NLRP12 maintains intestinal homeostasis by regulating microbiome diversity. Cell Mol Immunol 2017; 15:193-195. [PMID: 28737738 DOI: 10.1038/cmi.2017.61] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 06/07/2017] [Indexed: 12/30/2022] Open
Affiliation(s)
- Jenny Moi-Fong Lau
- Centre for Experimental Medicine, Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast BT9 7BL, UK
| | - Yvonne Dombrowski
- Centre for Experimental Medicine, Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast BT9 7BL, UK
| |
Collapse
|