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Lassoued N, Yero A, Jenabian MA, Soret R, Pilon N. Efficient enzyme-free method to assess the development and maturation of the innate and adaptive immune systems in the mouse colon. Sci Rep 2024; 14:11063. [PMID: 38744932 PMCID: PMC11094196 DOI: 10.1038/s41598-024-61834-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024] Open
Abstract
Researchers who aim to globally analyze the gastrointestinal immune system via flow cytometry have many protocol options to choose from, with specifics generally tied to gut wall layers of interest. To get a clearer idea of the approach we should use on full-thickness colon samples from mice, we first undertook a systematic comparison of three tissue dissociation techniques: two based on enzymatic cocktails and the other one based on manual crushing. Using flow cytometry panels of general markers of lymphoid and myeloid cells, we found that the presence of cell-surface markers and relative cell population frequencies were more stable with the mechanical method. Both enzymatic approaches were associated with a marked decrease of several cell-surface markers. Using mechanical dissociation, we then developed two minimally overlapping panels, consisting of a total of 26 antibodies, for serial profiling of lymphoid and myeloid lineages from the mouse colon in greater detail. Here, we highlight how we accurately delineate these populations by manual gating, as well as the reproducibility of our panels on mouse spleen and whole blood. As a proof-of-principle of the usefulness of our general approach, we also report segment- and life stage-specific patterns of immune cell profiles in the colon. Overall, our data indicate that mechanical dissociation is more suitable and efficient than enzymatic methods for recovering immune cells from all colon layers at once. Additionally, our panels will provide researchers with a relatively simple tool for detailed immune cell profiling in the murine gastrointestinal tract, regardless of life stage or experimental conditions.
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Affiliation(s)
- Nejia Lassoued
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
| | - Alexis Yero
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
- Human Immuno-Virology Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Mohammad-Ali Jenabian
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada
- Human Immuno-Virology Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Rodolphe Soret
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada.
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada.
| | - Nicolas Pilon
- Molecular Genetics of Development Laboratory, Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada.
- Centre d'excellence en recherche sur les maladies orphelines - Fondation Courtois (CERMO-FC), Université du Québec à Montréal, Montreal, QC, Canada.
- Department of Pediatrics, Université de Montréal, Montreal, QC, Canada.
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Chatzi D, Kyriakoudi SA, Dermitzakis I, Manthou ME, Meditskou S, Theotokis P. Clinical and Genetic Correlation in Neurocristopathies: Bridging a Precision Medicine Gap. J Clin Med 2024; 13:2223. [PMID: 38673496 PMCID: PMC11050951 DOI: 10.3390/jcm13082223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/09/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
Neurocristopathies (NCPs) encompass a spectrum of disorders arising from issues during the formation and migration of neural crest cells (NCCs). NCCs undergo epithelial-mesenchymal transition (EMT) and upon key developmental gene deregulation, fetuses and neonates are prone to exhibit diverse manifestations depending on the affected area. These conditions are generally rare and often have a genetic basis, with many following Mendelian inheritance patterns, thus making them perfect candidates for precision medicine. Examples include cranial NCPs, like Goldenhar syndrome and Axenfeld-Rieger syndrome; cardiac-vagal NCPs, such as DiGeorge syndrome; truncal NCPs, like congenital central hypoventilation syndrome and Waardenburg syndrome; and enteric NCPs, such as Hirschsprung disease. Additionally, NCCs' migratory and differentiating nature makes their derivatives prone to tumors, with various cancer types categorized based on their NCC origin. Representative examples include schwannomas and pheochromocytomas. This review summarizes current knowledge of diseases arising from defects in NCCs' specification and highlights the potential of precision medicine to remedy a clinical phenotype by targeting the genotype, particularly important given that those affected are primarily infants and young children.
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Affiliation(s)
| | | | | | | | | | - Paschalis Theotokis
- Department of Histology-Embryology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (D.C.); (S.A.K.); (I.D.); (M.E.M.); (S.M.)
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Zhang X, Sun D, Xu Q, Liu H, Li Y, Wang D, Wang J, Zhang Q, Hou P, Mu W, Jia C, Li A. Risk factors for Hirschsprung disease-associated enterocolitis: a systematic review and meta-analysis. Int J Surg 2023; 109:2509-2524. [PMID: 37288551 PMCID: PMC10442125 DOI: 10.1097/js9.0000000000000473] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Accepted: 05/08/2023] [Indexed: 06/09/2023]
Abstract
BACKGROUND The incidence of Hirschsprung disease (HSCR) is nearly 1/5000 and patients with HSCR are usually treated through surgical intervention. Hirschsprung disease-associated enterocolitis (HAEC) is a complication of HSCR with the highest morbidity and mortality in patients. The evidence on the risk factors for HAEC remains inconclusive to date. METHODS Four English databases and four Chinese databases were searched for relevant studies published until May 2022. The search retrieved 53 relevant studies. The retrieved studies were scored on the Newcastle-Ottawa Scale by three researchers. Revman 5.4 software was employed for data synthesis and analysis. Stata 16 software was employed for sensitivity analysis and bias analysis. RESULTS A total of 53 articles were retrieved from the database search, which included 10 012 cases of HSCR and 2310 cases of HAEC. The systematic analysis revealed anastomotic stenosis or fistula [ I2 =66%, risk ratio (RR)=1.90, 95% CI 1.34-2.68, P <0.001], preoperative enterocolitis ( I2 =55%, RR=2.07, 95% CI 1.71-2.51, P <0.001), preoperative malnutrition ( I2 =0%, RR=1.96, 95% CI 1.52-2.53, P <0.001), preoperative respiratory infection or pneumonia ( I2 =0%, RR=2.37, 95% CI 1.91-2.93, P <0.001), postoperative ileus ( I2 =17%, RR=2.41, 95% CI 2.02-2.87, P <0.001), length of ganglionless segment greater than 30 cm ( I2 =0%, RR=3.64, 95% CI 2.43-5.48, P <0.001), preoperative hypoproteinemia ( I2 =0%, RR=1.91, 95% CI 1.44-2.54, P <0.001), and Down syndrome ( I2 =29%, RR=1.65, 95% CI 1.32-2.07, P <0.001) as the risk factors for postoperative HAEC. Short-segment HSCR ( I2 =46%, RR=0.62, 95% CI 0.54-0.71, P <0.001) and transanal operation ( I2 =78%, RR=0.56, 95% CI 0.33-0.96, P =0.03) were revealed as the protective factors against postoperative HAEC. Preoperative malnutrition ( I2 =35 % , RR=5.33, 95% CI 2.68-10.60, P <0.001), preoperative hypoproteinemia ( I2 =20%, RR=4.17, 95% CI 1.91-9.12, P <0.001), preoperative enterocolitis ( I2 =45%, RR=3.51, 95% CI 2.54-4.84, P <0.001), and preoperative respiratory infection or pneumonia ( I2 =0%, RR=7.20, 95% CI 4.00-12.94, P <0.001) were revealed as the risk factors for recurrent HAEC, while short-segment HSCR ( I2 =0%, RR=0.40, 95% CI 0.21-0.76, P =0.005) was revealed as a protective factor against recurrent HAEC. CONCLUSION The present review delineated the multiple risk factors for HAEC, which could assist in preventing the development of HAEC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Chunling Jia
- Stomatology, Qilu Hospital of Shandong University, Jinan, China
| | - Aiwu Li
- Departments ofPediatric surgery
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Schill EM, Floyd AN, Newberry RD. Neonatal development of intestinal neuroimmune interactions. Trends Neurosci 2022; 45:928-941. [PMID: 36404456 PMCID: PMC9683521 DOI: 10.1016/j.tins.2022.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/19/2022] [Accepted: 10/01/2022] [Indexed: 11/06/2022]
Abstract
Interactions between the enteric nervous system (ENS), immune system, and gut microbiota regulate intestinal homeostasis in adults, but their development and role(s) in early life are relatively underexplored. In early life, these interactions are dynamic, because the mucosal immune system, microbiota, and the ENS are developing and influencing each other. Moreover, disrupting gut microbiota and gut immune system development, and potentially ENS development, by early-life antibiotic exposure increases the risk of diseases affecting the gut. Here, we review the development of the ENS and immune/epithelial cells, and identify potential critical periods for their interactions and development. We also highlight knowledge gaps that, when addressed, may help promote intestinal homeostasis, including in the settings of early-life antibiotic exposure.
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Affiliation(s)
- Ellen Merrick Schill
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St Louis, MO 63110, USA; Division of Newborn Medicine, Department of Pediatrics, Washington University School of Medicine, St Louis, MO 63110, USA.
| | - Alexandria N Floyd
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St Louis, MO 63110, USA
| | - Rodney D Newberry
- Division of Gastroenterology, Department of Medicine, Washington University School of Medicine, St Louis, MO 63110, USA.
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Zhang Z, Li B, Jiang Q, Li Q, Pierro A, Li L. Hirschsprung-Associated Enterocolitis: Transformative Research from Bench to Bedside. Eur J Pediatr Surg 2022; 32:383-390. [PMID: 35649434 DOI: 10.1055/s-0042-1745780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Hirschsprung disease (HSCR) is a congenital disease that is characterized by the absence of intrinsic ganglion cells in the submucosal and myenteric plexuses of the distal colon and is the most common cause of congenital intestinal obstruction. Hirschsprung-associated enterocolitis (HAEC) is a life-threatening complication of HSCR, which can occur either before or after surgical resection of the aganglionic bowel. Even though HAEC is a leading cause of death in HSCR patients, its etiology and pathophysiology remain poorly understood. Various factors have been associated with HAEC, including the mucus barrier, microbiota, immune function, obstruction of the colon, and genetic variations. In this review, we examine our current mouse model of HAEC and how it informs our understanding of the disease. We also describe current emerging research that highlights the potential future of HAEC treatment.
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Affiliation(s)
- Zhen Zhang
- Department of General Surgery, Capital Institute of Pediatrics, Beijing, Beijing, China
| | - Bo Li
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Qian Jiang
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China
| | - Qi Li
- Department of General Surgery, Capital Institute of Pediatrics, Beijing, Beijing, China
| | - Agostino Pierro
- Department of Paediatric Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Long Li
- Department of General Surgery, Capital Institute of Pediatrics, Beijing, Beijing, China
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Wang N, Xi J, Lan C, Wu Y, Zhu Y, Zuo X, Zhang Y. Association between IKBKAP polymorphisms and Hirschsprung's disease susceptibility in Chinese children. Transl Pediatr 2022; 11:789-796. [PMID: 35800263 PMCID: PMC9253937 DOI: 10.21037/tp-21-550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 04/22/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Hirschsprung's disease (HSCR) is a rare congenital disease in which enteric nervous system (ENS) in the distal intestine is absent. HSCR is a disease involving genetic factors and environmental factors. Despite a series of genes have been revealed to contribute to HSCR, many HSCR associated genes were yet not identified. Previous studies had identified that a potential susceptibility gene of HSCR was an inhibitor of kappa light polypeptide gene enhancer in B-cells, kinase complex-associated protein (IKBKAP). The study aimed to explore the association of genetic variants in IKBKAP and HSCR susceptibility in southern Chinese children. METHODS Single nucleotide polymorphism (SNPs) were genotyped by the Mass ARRAY iPLEX Gold system (Sequenom, San Diego, CA, USA) on all samples, which included 1,470 HSCR children (cases) and 1,473 healthy children (controls). The associations between SNPs and HSCR or clinical subtypes were assessed by comparing their allele frequencies in corresponding case and control samples. Different genetic models, including additive, recessive, and dominant models, were tested using PLINK 1.9 software. RESULTS Further subgroup analysis revealed rs2275630 as a total colonic aganglionosis (TCA)-specific susceptibility locus. The present study is the first to indicate that IKBKAP rs2275630 were associated with HSCR susceptibility, especially in TCA patients. CONCLUSIONS We conclude that IKBKAP rs2275630 is a susceptibility gene of HSCR.
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Affiliation(s)
- Ning Wang
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Jiaojiao Xi
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Chaoting Lan
- Department of Pediatrics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Yuxin Wu
- Department of Pediatrics, The First Affiliated Hospital of Jinan University, Guangzhou, China
| | - Yun Zhu
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Xiaoyu Zuo
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yan Zhang
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
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7
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Zheng Z, Gao M, Tang C, Huang L, Gong Y, Liu Y, Wang J. E. coli JM83 damages the mucosal barrier in Ednrb knockout mice to promote the development of Hirschsprung‑associated enterocolitis via activation of TLR4/p‑p38/NF‑κB signaling. Mol Med Rep 2022; 25:168. [PMID: 35302172 PMCID: PMC8971921 DOI: 10.3892/mmr.2022.12684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/24/2022] [Indexed: 11/29/2022] Open
Abstract
Hirschsprung-associated enterocolitis (HAEC) is characterized by intestinal mucosal damage and an imbalance in the intestinal microbiota. Recent studies have indicated that the TLR4/p-p38/NF-κB signaling pathway in the intestine is of great importance to intestinal mucosal integrity. The present study aimed to investigate the role of TLR4/phosphorylated (p-)38/NF-κB signaling in the pathogenesis of HAEC in E. coli JM83-infected endothelin receptor B (Ednrb)−/− mice. Ednrb−/− mice were infected with E. coli JM83 by oral gavage to establish the HAEC model. Wild-type and Ednrb−/− mice were randomly divided into uninfected and E. coli groups. The role of TLR4/p-p38/NF-κB signaling was further evaluated by in vivo and in vitro analyses. The activation of the TLR4/p-p38/NF-κB signaling pathway induced by E. coli JM83 resulted in HAEC in Ednrb−/− mice, which was evidenced by a significant increase in the expression of TNF-α, TGF-β and IL-10, and a decreased density of F-actin protein expression. TLR4 knockdown reduced the severity of enterocolitis and attenuated the expression of IL-10, TNF-α and TGF-β, whilst increasing the density of F-actin protein in Ednrb−/− mice after E. coli infection. These results indicated that E. coli JM83 activates TLR4/p-p38/NF-κB signaling in Ednrb−/− to promote the development of HAEC. Thus, inhibition of this signaling pathway may benefit the treatment and prevention of HAEC.
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Affiliation(s)
- Zebing Zheng
- Department of Pediatric Surgery, Children's Hospital of Soochow University, Pediatric Research Institute of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Mingjuan Gao
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Chengyan Tang
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Lu Huang
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Yuan Gong
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Yuanmei Liu
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, P.R. China
| | - Jian Wang
- Department of Pediatric Surgery, Children's Hospital of Soochow University, Pediatric Research Institute of Soochow University, Suzhou, Jiangsu 215123, P.R. China
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Lu YJ, Yu WW, Cui MM, Yu XX, Song HL, Bai MR, Wu WJ, Gu BL, Wang J, Cai W, Chu X. Association Analysis of Variants of DSCAM and BACE2 With Hirschsprung Disease Susceptibility in Han Chinese and Functional Evaluation in Zebrafish. Front Cell Dev Biol 2021; 9:641152. [PMID: 34136475 PMCID: PMC8201997 DOI: 10.3389/fcell.2021.641152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 04/20/2021] [Indexed: 11/17/2022] Open
Abstract
Hirschsprung disease (HSCR) has a higher incidence in children with Down syndrome (DS), which makes trisomy 21 a predisposing factor to HSCR. DSCAM and BACE2 are close together on the HSCR-associated critical region of chromosome 21. Common variants of DSCAM and rare variants of BACE2 were implicated to be associated with sporadic HSCR. However, the submucosal neuron defect of DS mouse model could not be rescued by normalization of Dscam. We aimed to explore the contribution of DSCAM and BACE2 to the development of the enteric nervous system (ENS) and HSCR susceptibility. We genotyped 133 tag single-nucleotide polymorphisms (SNPs) in DSCAM and BACE2 gene region in 420 HSCR patients and 1,665 controls of Han Chinese. Expression of DSCAM and BACE2 homologs was investigated in the developing gut of zebrafish. Overexpression and knockdown of the homologs were performed in zebrafish to investigate their roles in the development of ENS. Two DSCAM SNPs, rs430255 (PAddtive = 0.0052, OR = 1.36, 95% CI: 1.10–1.68) and rs2837756 (PAddtive = 0.0091, OR = 1.23, 95% CI: 1.05–1.43), showed suggestive association with HSCR risk. Common variants in BACE2 were not associated with HSCR risk. We observed dscama, dscamb, and bace2 expression in the developing gut of zebrafish. Knockdown of dscama, dscamb, and bace2 caused a reduction of enteric neurons in the hindgut of zebrafish. Overexpression of DSCAM and bace2 had no effects on neuron number in the hindgut of zebrafish. Our results suggested that common variation of DSCAM contributed to HSCR risk in Han Chinese. The dysfunction of both dscams and bace2 caused defects in enteric neuron, indicating that DSCAM and BACE2 might play functional roles in the occurrence of HSCR. These novel findings might shed new light on the pathogenesis of HSCR.
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Affiliation(s)
- Yan-Jiao Lu
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Wen-Wen Yu
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Meng-Meng Cui
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Xian-Xian Yu
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Huan-Lei Song
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Mei-Rong Bai
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Wen-Jie Wu
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Bei-Lin Gu
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Jun Wang
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Wei Cai
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
| | - Xun Chu
- Department of Pediatric Surgery, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition, Shanghai, China.,Shanghai Institute of Pediatric Research, Shanghai, China
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The OSMR Gene Is Involved in Hirschsprung Associated Enterocolitis Susceptibility through an Altered Downstream Signaling. Int J Mol Sci 2021; 22:ijms22083831. [PMID: 33917126 PMCID: PMC8067804 DOI: 10.3390/ijms22083831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 12/14/2022] Open
Abstract
Hirschsprung (HSCR) Associated Enterocolitis (HAEC) is a common life-threatening complication in HSCR. HAEC is suggested to be due to a loss of gut homeostasis caused by impairment of immune system, barrier defense, and microbiome, likely related to genetic causes. No gene has been claimed to contribute to HAEC occurrence, yet. Genetic investigation of HAEC by Whole-Exome Sequencing (WES) on 24 HSCR patients affected (HAEC) or not affected (HSCR-only) by enterocolitis and replication of results on a larger panel of patients allowed the identification of the HAEC susceptibility variant p.H187Q in the Oncostatin-M receptor (OSMR) gene (14.6% in HAEC and 5.1% in HSCR-only, p = 0.0024). Proteomic analysis on the lymphoblastoid cell lines from one HAEC patient homozygote for this variant and one HAEC patient not carrying the variant revealed two well distinct clusters of proteins significantly up or downregulated upon OSM stimulation. A marked enrichment in immune response pathways (q < 0.0001) was shown in the HAEC H187 cell line, while proteins upregulated in the HAEC Q187 lymphoblasts sustained pathways likely involved in pathogen infection and inflammation. In conclusion, OSMR p.H187Q is an HAEC susceptibility variant and perturbates the downstream signaling cascade necessary for the gut immune response and homeostasis maintenance.
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10
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Dariel A, Grynberg L, Auger M, Lefèvre C, Durand T, Aubert P, Le Berre-Scoul C, Venara A, Suply E, Leclair MD, de Vries P, Levard G, Parmentier B, Podevin G, Schmitt F, Couvrat V, Irtan S, Hervieux E, Villemagne T, Lardy H, Capito C, Muller C, Sarnacki S, Mosnier JF, Galmiche L, Derkinderen P, Boudin H, Brochard C, Neunlist M. Analysis of enteric nervous system and intestinal epithelial barrier to predict complications in Hirschsprung's disease. Sci Rep 2020; 10:21725. [PMID: 33303794 PMCID: PMC7729910 DOI: 10.1038/s41598-020-78340-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 11/18/2020] [Indexed: 12/12/2022] Open
Abstract
In Hirschsprung’s disease (HSCR), postoperative course remains unpredictable. Our aim was to define predictive factors of the main postoperative complications: obstructive symptoms (OS) and Hirschsprung-associated enterocolitis (HAEC). In this prospective multicentre cohort study, samples of resected bowel were collected at time of surgery in 18 neonates with short-segment HSCR in tertiary care hospitals. OS and HAEC were noted during postoperative follow-up. We assessed the enteric nervous system and the intestinal epithelial barrier (IEB) in ganglionic segments by combining immunohistochemical, proteomic and transcriptomic approaches, with functional ex vivo analysis of motility and para/transcellular permeability. Ten HSCR patients presented postoperative complications (median follow-up 23.5 months): 6 OS, 4 HAEC (2 with OS), 2 diarrhoea (without OS/HAEC). Immunohistochemical analysis showed a significant 41% and 60% decrease in median number of nNOS-IR myenteric neurons per ganglion in HSCR with OS as compared to HSCR with HAEC/diarrhoea (without OS) and HSCR without complications (p = 0.0095; p = 0.002, respectively). Paracellular and transcellular permeability was significantly increased in HSCR with HAEC as compared to HSCR with OS/diarrhoea without HAEC (p = 0.016; p = 0.009) and HSCR without complications (p = 0.029; p = 0.017). This pilot study supports the hypothesis that modulating neuronal phenotype and enhancing IEB permeability may treat or prevent postoperative complications in HSCR.
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Affiliation(s)
- Anne Dariel
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France. .,Paediatric Surgery Department, La Timone-Enfants Hospital, Assistance Publique des Hôpitaux de Marseille, 264 rue Saint Pierre, 13385, Marseille, France. .,Paediatric Surgery Department, University Hospital of Nantes, Nantes, France.
| | - Lucie Grynberg
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Marie Auger
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Chloé Lefèvre
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Tony Durand
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Philippe Aubert
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Catherine Le Berre-Scoul
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Aurélien Venara
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Etienne Suply
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Marc-David Leclair
- Paediatric Surgery Department, University Hospital of Nantes, Nantes, France
| | - Philine de Vries
- Paediatric Surgery Department, University Hospital of Brest, Brest, France
| | - Guillaume Levard
- Paediatric Surgery Department, University Hospital of Poitiers, Poitiers, France
| | - Benoit Parmentier
- Paediatric Surgery Department, University Hospital of Poitiers, Poitiers, France
| | - Guillaume Podevin
- Paediatric Surgery Department, University Hospital of Angers, Angers, France
| | - Françoise Schmitt
- Paediatric Surgery Department, University Hospital of Angers, Angers, France
| | | | - Sabine Irtan
- Paediatric Surgery Department, Armand Trousseau Hospital, Paris, France
| | - Erik Hervieux
- Paediatric Surgery Department, Armand Trousseau Hospital, Paris, France
| | - Thierry Villemagne
- Paediatric Surgery Department, University Hospital of Tours, Tours, France
| | - Hubert Lardy
- Paediatric Surgery Department, University Hospital of Tours, Tours, France
| | - Carmen Capito
- Paediatric Surgery Department, Necker Enfants Malades Hospital, Paris, France
| | - Cécile Muller
- Paediatric Surgery Department, Necker Enfants Malades Hospital, Paris, France
| | - Sabine Sarnacki
- Paediatric Surgery Department, Necker Enfants Malades Hospital, Paris, France
| | | | - Louise Galmiche
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France.,Pathology Department, Necker Enfants Malades Hospital, Paris, France
| | - Pascal Derkinderen
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Hélène Boudin
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Charlène Brochard
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
| | - Michel Neunlist
- University of Nantes, INSERM, TENS, The Enteric Nervous System in Gut and Brain Diseases, IMAD, Nantes, France
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11
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Liang W, Peng X, Li Q, Wang P, Lv P, Song Q, She S, Huang S, Chen K, Gong W, Yuan W, Thovarai V, Yoshimura T, O'huigin C, Trinchieri G, Huang J, Lin S, Yao X, Bian X, Kong W, Xi J, Wang JM, Wang Y. FAM3D is essential for colon homeostasis and host defense against inflammation associated carcinogenesis. Nat Commun 2020; 11:5912. [PMID: 33219235 PMCID: PMC7679402 DOI: 10.1038/s41467-020-19691-z] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 09/07/2020] [Indexed: 12/19/2022] Open
Abstract
The physiological homeostasis of gut mucosal barrier is maintained by both genetic and environmental factors and its impairment leads to pathogenesis such as inflammatory bowel disease. A cytokine like molecule, FAM3D (mouse Fam3D), is highly expressed in mouse gastrointestinal tract. Here, we demonstrate that deficiency in Fam3D is associated with impaired integrity of colonic mucosa, increased epithelial hyper-proliferation, reduced anti-microbial peptide production and increased sensitivity to chemically induced colitis associated with high incidence of cancer. Pretreatment of Fam3D−/− mice with antibiotics significantly reduces the severity of chemically induced colitis and wild type (WT) mice co-housed with Fam3D−/− mice phenocopy Fam3D-deficiency showing increased sensitivity to colitis and skewed composition of fecal microbiota. An initial equilibrium of microbiota in cohoused WT and Fam3D−/− mice is followed by an increasing divergence of the bacterial composition after separation. These results demonstrate the essential role of Fam3D in colon homeostasis, protection against inflammation associated cancer and normal microbiota composition. The cytokine like protein FAM3D (Fam3D in mice) is highly expressed in the digestive tract with unknown role in colon pathophysiology. Here, by using gene deficient mice, the authors show that Fam3D is critically involved in colon homeostasis, host defense against colitis-associated carcinogenesis, and the balance of microbiota.
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Affiliation(s)
- Weiwei Liang
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China.,Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702, USA
| | - Xinjian Peng
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Qingqing Li
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Pingzhang Wang
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Ping Lv
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Quansheng Song
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Shaoping She
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Shiyang Huang
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China
| | - Keqiang Chen
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702, USA
| | - Wanghua Gong
- Basic Research Program, Leidos Biomedical Research, Inc, Frederick, MD, 21702, USA
| | - Wuxing Yuan
- Microbiome Sequencing Core, Leidos Biomedical Research, Inc, Frederick, MD, 21702, USA
| | - Vishal Thovarai
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA
| | - Teizo Yoshimura
- Department of Pathology and Experimental Medicine, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, 700-8558, Japan
| | - Colm O'huigin
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702, USA
| | - Giorgio Trinchieri
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702, USA
| | - Jiaqiang Huang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702, USA.,Cancer Research Center, Beijing Chest Hospital affiliated to Capital Medical University, Beijing Tuberculosis & Thoracic Tumor Research Institute, Beijing, 101149, P. R. China
| | - Shuye Lin
- Cancer Research Center, Beijing Chest Hospital affiliated to Capital Medical University, Beijing Tuberculosis & Thoracic Tumor Research Institute, Beijing, 101149, P. R. China
| | - Xiaohong Yao
- Institute of Pathology, South-west Hospital and Cancer Center, Chongqing, P. R. China
| | - Xiuwu Bian
- Institute of Pathology, South-west Hospital and Cancer Center, Chongqing, P. R. China
| | - Wei Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P. R. China
| | - Jianzhong Xi
- Department of Biomedicine, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Ji Ming Wang
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD, 21702, USA.
| | - Ying Wang
- Department of Immunology, School of Basic Medical Sciences and NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, P. R. China.
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12
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Kiouptsi K, Pontarollo G, Todorov H, Braun J, Jäckel S, Koeck T, Bayer F, Karwot C, Karpi A, Gerber S, Jansen Y, Wild P, Ruf W, Daiber A, Van Der Vorst E, Weber C, Döring Y, Reinhardt C. Germ-free housing conditions do not affect aortic root and aortic arch lesion size of late atherosclerotic low-density lipoprotein receptor-deficient mice. Gut Microbes 2020; 11:1809-1823. [PMID: 32579470 PMCID: PMC7524356 DOI: 10.1080/19490976.2020.1767463] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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
The microbiota has been linked to the development of atherosclerosis, but the functional impact of these resident bacteria on the lesion size and cellular composition of atherosclerotic plaques in the aorta has never been experimentally addressed with the germ-free low-density lipoprotein receptor-deficient (Ldlr-/- ) mouse atherosclerosis model. Here, we report that 16 weeks of high-fat diet (HFD) feeding of hypercholesterolemic Ldlr-/- mice at germ-free (GF) housing conditions did not impact relative aortic root plaque size, macrophage content, and necrotic core area. Likewise, we did not find changes in the relative aortic arch lesion size. However, late atherosclerotic GF Ldlr-/- mice had altered inflammatory plasma protein markers and reduced smooth muscle cell content in their atherosclerotic root plaques relative to CONV-R Ldlr-/- mice. Neither absolute nor relative aortic root or aortic arch plaque size correlated with age. Our analyses on GF Ldlr-/- mice did not reveal a significant contribution of the microbiota in late aortic atherosclerosis.
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Affiliation(s)
- Klytaimnistra Kiouptsi
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany
| | - Giulia Pontarollo
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany
| | - Hristo Todorov
- Institute of Developmental Biology and Neurobiology, University Medical Center of the Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Johannes Braun
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany
| | - Sven Jäckel
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany
| | - Thomas Koeck
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany,Preventive Cardiology and Preventive Medicine, Center for Cardiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Franziska Bayer
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany
| | - Cornelia Karwot
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany
| | - Angelica Karpi
- Center for Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany
| | - Susanne Gerber
- Institute of Developmental Biology and Neurobiology, University Medical Center of the Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Yvonne Jansen
- Institute of Cardiovascular Prevention, Department of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Philipp Wild
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany,Preventive Cardiology and Preventive Medicine, Center for Cardiology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Wolfram Ruf
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany,Department of Immunology and Microbiology, Scripps Research Institute, La Jolla, USA
| | - Andreas Daiber
- German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany,Center for Cardiology, Cardiology I, University Medical Center Mainz, Mainz, Germany
| | - Emiel Van Der Vorst
- Institute of Cardiovascular Prevention, Department of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany,Department of Pathology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands,Interdisciplinary Center for Clinical Research (IZKF), Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, Aachen, Germany
| | - Christian Weber
- Institute of Cardiovascular Prevention, Department of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany
| | - Yvonne Döring
- Institute of Cardiovascular Prevention, Department of Medicine, Ludwig-Maximilians-University Munich, Munich, Germany,German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany,Division of Angiology, Swiss Cardiovascular Center, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany,German Center for Cardiovascular Research (DZHK), Partner Site RheinMain, Mainz, Germany,CONTACT Christoph Reinhardt University Medical Center Mainz, Mainz55131, Germany
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13
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Mahato AK, Sidorova YA. RET Receptor Tyrosine Kinase: Role in Neurodegeneration, Obesity, and Cancer. Int J Mol Sci 2020; 21:ijms21197108. [PMID: 32993133 PMCID: PMC7583994 DOI: 10.3390/ijms21197108] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/23/2020] [Accepted: 09/24/2020] [Indexed: 02/06/2023] Open
Abstract
Rearranged during transfection (RET) is the tyrosine kinase receptor that under normal circumstances interacts with ligand at the cell surface and mediates various essential roles in a variety of cellular processes such as proliferation, differentiation, survival, migration, and metabolism. RET plays a pivotal role in the development of both peripheral and central nervous systems. RET is expressed from early stages of embryogenesis and remains expressed throughout all life stages. Mutations either activating or inhibiting RET result in several aggressive diseases, namely cancer and Hirschsprung disease. However, the physiological ligand-dependent activation of RET receptor is important for the survival and maintenance of several neuronal populations, appetite, and weight gain control, thus providing an opportunity for the development of disease-modifying therapeutics against neurodegeneration and obesity. In this review, we describe the structure of RET, its signaling, and its role in both normal conditions as well as in several disorders. We highlight the differences in the signaling and outcomes of constitutive and ligand-induced RET activation. Finally, we review the data on recently developed small molecular weight RET agonists and their potential for the treatment of various diseases.
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14
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Herath M, Hosie S, Bornstein JC, Franks AE, Hill-Yardin EL. The Role of the Gastrointestinal Mucus System in Intestinal Homeostasis: Implications for Neurological Disorders. Front Cell Infect Microbiol 2020; 10:248. [PMID: 32547962 PMCID: PMC7270209 DOI: 10.3389/fcimb.2020.00248] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 04/29/2020] [Indexed: 12/19/2022] Open
Abstract
Mucus is integral to gut health and its properties may be affected in neurological disease. Mucus comprises a hydrated network of polymers including glycosylated mucin proteins. We propose that factors that influence the nervous system may also affect the volume, viscosity, porosity of mucus composition and subsequently, gastrointestinal (GI) microbial populations. The gut has its own intrinsic neuronal network, the enteric nervous system, which extends the length of the GI tract and innervates the mucosal epithelium. The ENS regulates gut function including mucus secretion and renewal. Both dysbiosis and gut dysfunction are commonly reported in several neurological disorders such as Parkinson's and Alzheimer's disease as well in patients with neurodevelopmental disorders including autism. Since some microbes use mucus as a prominent energy source, changes in mucus properties could alter, and even exacerbate, dysbiosis-related gut symptoms in neurological disorders. This review summarizes existing knowledge of the structure and function of the mucus of the GI tract and highlights areas to be addressed in future research to better understand how intestinal homeostasis is impacted in neurological disorders.
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Affiliation(s)
- Madushani Herath
- Department of Physiology, University of Melbourne, Parkville, VIC, Australia
| | - Suzanne Hosie
- School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Joel C Bornstein
- Department of Physiology, University of Melbourne, Parkville, VIC, Australia
| | - Ashley E Franks
- School of Life Sciences, La Trobe University, Bundoora, VIC, Australia
| | - Elisa L Hill-Yardin
- Department of Physiology, University of Melbourne, Parkville, VIC, Australia.,School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
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15
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Morel L, Domingues O, Zimmer J, Michel T. Revisiting the Role of Neurotrophic Factors in Inflammation. Cells 2020; 9:cells9040865. [PMID: 32252363 PMCID: PMC7226825 DOI: 10.3390/cells9040865] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/31/2020] [Accepted: 03/31/2020] [Indexed: 12/13/2022] Open
Abstract
The neurotrophic factors are well known for their implication in the growth and the survival of the central, sensory, enteric and parasympathetic nervous systems. Due to these properties, neurturin (NRTN) and Glial cell-derived neurotrophic factor (GDNF), which belong to the GDNF family ligands (GFLs), have been assessed in clinical trials as a treatment for neurodegenerative diseases like Parkinson’s disease. In addition, studies in favor of a functional role for GFLs outside the nervous system are accumulating. Thus, GFLs are present in several peripheral tissues, including digestive, respiratory, hematopoietic and urogenital systems, heart, blood, muscles and skin. More precisely, recent data have highlighted that different types of immune and epithelial cells (macrophages, T cells, such as, for example, mucosal-associated invariant T (MAIT) cells, innate lymphoid cells (ILC) 3, dendritic cells, mast cells, monocytes, bronchial epithelial cells, keratinocytes) have the capacity to release GFLs and express their receptors, leading to the participation in the repair of epithelial barrier damage after inflammation. Some of these mechanisms pass on to ILCs to produce cytokines (such as IL-22) that can impact gut microbiota. In addition, there are indications that NRTN could be used in the treatment of inflammatory airway diseases and it prevents the development of hyperglycemia in the diabetic rat model. On the other hand, it is suspected that the dysregulation of GFLs produces oncogenic effects. This review proposes the discussion of the biological understanding and the potential new opportunities of the GFLs, in the perspective of developing new treatments within a broad range of human diseases.
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16
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Wang XJ, Camilleri M. Chronic Megacolon Presenting in Adolescents or Adults: Clinical Manifestations, Diagnosis, and Genetic Associations. Dig Dis Sci 2019; 64:2750-2756. [PMID: 30953226 PMCID: PMC6744965 DOI: 10.1007/s10620-019-05605-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 03/26/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Chronic megacolon is rarely encountered in clinical practice beyond infancy or early childhood. Most cases are sporadic, and some are familial megacolon and present during adolescence or adulthood. There is a need for diagnostic criteria and identifying genetic variants reported in non-Hirschsprung's megacolon. METHODS PubMed search was conducted using specific key words. RESULTS This article reviews the clinical manifestations, current diagnostic criteria, and intraluminal measurements of colonic compliance to confirm the diagnosis when the radiological imaging is not conclusive. Normal ranges of colonic compliance at 20, 30, and 44 mmHg distension are provided. The diverse genetic associations with chronic acquired megacolon beyond childhood are reviewed, including the potential association of SEMA3F gene in a family with megacolon. CONCLUSIONS Measuring colonic compliance could be standardized and simplified by measuring volume at 20, 30, and 44 mmHg distension to identify megacolon when radiology is inconclusive. Diverse genetic associations with chronic acquired megacolon beyond childhood have been identified.
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Affiliation(s)
- Xiao Jing Wang
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Division of Gastroenterology and Hepatology, Mayo Clinic, Charlton Bldg., Rm. 8-110, 200 First Street S.W., Rochester, MN, 55905, USA
| | - Michael Camilleri
- Clinical Enteric Neuroscience Translational and Epidemiological Research (CENTER), Division of Gastroenterology and Hepatology, Mayo Clinic, Charlton Bldg., Rm. 8-110, 200 First Street S.W., Rochester, MN, 55905, USA.
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17
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Zhao F, Zhou CG, Xu G, Ma TD, Xia RP, Li BX. [Effect of enhancer of zeste homolog 2 on the expression of glial cell line-derived neurotrophic factor family receptor α-1 in the colon tissue of children with Hirschsprung's disease]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2019; 21:1033-1037. [PMID: 31642440 PMCID: PMC7389725 DOI: 10.7499/j.issn.1008-8830.2019.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
OBJECTIVE To study the expression levels of glial cell line-derived neurotrophic factor family receptor α-1 (GFRα1) and enhancer of zeste homolog 2 (EZH2) in the intestinal tissue of children with Hirschsprung's disease (HSCR), as well as the role of EZH2 in the regulation of GFRα1 gene expression and the pathogenesis of HSCR. METHODS The samples of colon tissue with spasm from 24 children with HSCR after radical treatment of HSCR were selected as the experimental group, and the samples of necrotized colon tissue from 18 children with neonatal necrotizing enterocolitis after surgical resection were selected as the control group. Real-time PCR and Western blot were used to measure the expression levels of GFRα1 and EZH2 in colon tissue in both groups. Human neuroblastoma SH-SY5Y cells were divided into an EZH2 over-expression group and a negative control group. The cells in the EZH2 over-expression group were transfected with pCMV6-EZH2 plasmid, and those in the negative control group were transfected with pCMV6 plasmid. The expression levels of EZH2 and GFRα1 were measured after transfection. RESULTS Compared with the control group, the experimental group had significant reductions in the mRNA and protein expression levels of GFRα1 and EZH2 in colon tissue (P<0.05), and the protein expression of EZH2 was positively correlated with that of GFRα1 (r=0.606, P=0.002). Compared with the negative control group, the EZH2 over-expression group had significant increases in the expression levels of EZH2 and GFRα1 after SH-SY5Y cells were transfected with EZH2 over-expression plasmid (P<0.05). CONCLUSIONS Low expression of EZH2 in the colon tissue of children with HSCR may be one of the causes of inadequate expression of GFRα1 and onset of HSCR.
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Affiliation(s)
- Fan Zhao
- Department of Neonatal Surgery, Hunan Children's Hospital, Changsha 410007, China.
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18
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Tian J, Zeng C, Tian Z, Lin Y, Wang B, Pan Y, Shu Z, Jiang X. Downregulation of Protein Tyrosine Phosphatase Receptor Type R Accounts for the Progression of Hirschsprung Disease. Front Mol Neurosci 2019; 12:92. [PMID: 31024255 PMCID: PMC6468927 DOI: 10.3389/fnmol.2019.00092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 03/25/2019] [Indexed: 12/19/2022] Open
Abstract
Hirschsprung disease (HSCR) is a common developmental disorder of the enteric nervous system (ENS). However, the disease mechanisms have not been fully elucidated. To better understand the etiology of HSCR, the role and mechanism of HSCR associated PTPRR (protein tyrosine phosphatase receptor-type R) in the multipotency of ENS progenitors and ENS development were explored. In the present study, the downregulated PTPRR expression in HSCR was reflected by microarray and validated by real-time PCR analyses. Moreover, PTPRR protein was mainly expressed in the cytoplasmic area of primary cultured ENS progenitors (Enteric neural crest cells, ENCCs) and significantly decreased after differentiation induction, which implies the anti-differentiation role in ENCCs. Further study employed an adenovirus transfection system. After genetic modulation, the ENCCs maintained undifferentiated patterns even in GDNF (Glial cell-line derived neurotrophic factor)-mediated directional differentiation, as well as significantly increased EdU positive immunofluorescence in the PTPRR overexpressing group while the development of the ENS was stunted in the PTPRR knockdown fetal gut. Moreover, the expression of ERK1/2 activated by GDNF was significantly decreased as reflected by western-blot or immunofluorescence analyses after genetic modulation in the PTPRR overexpressing group, which suggests the potential mechanism in regulating the MAPK/ERK1/2 pathway. Taken together, These data support the idea that PTPRR may ensure a certain number of neural precursor cells by inhibiting ENCC overt differentiation and maintaining ENCC proliferation, which is considered to be the multipotency of ENCCs, and eventually participate in the development of the ENS, and establish PTPRR protein as negative regulator of MAPK/ERK1/2 signaling cascades in neuronal differentiation and demonstrate their involvement in the pathophysiology of HSCR.
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Affiliation(s)
- Jiao Tian
- Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Cheng Zeng
- Department of Nature Medicine, School of Pharmacy, The Fourth Military Medical University, Xi'an, China
| | - Zhen Tian
- Department of Pharmacology, School of Pharmacy, Xi'an, China.,Department of Pharmacy and Precision Pharmacy & Drug Development Center, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yan Lin
- Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Baoxi Wang
- Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yongkang Pan
- Department of Neonatal Surgery, The Affiliated Children Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhen Shu
- Department of Radiation Oncology, Winship Cancer Institute, Emory University, Atlanta, GA, United States
| | - Xun Jiang
- Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China
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