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van Gorp C, de Lange IH, Hütten MC, López-Iglesias C, Massy KRI, Kessels L, Knoops K, Cuijpers I, Sthijns MMJPE, Troost FJ, van Gemert WG, Spiller OB, Birchenough GMH, Zimmermann LJI, Wolfs TGAM. Antenatal Ureaplasma Infection Causes Colonic Mucus Barrier Defects: Implications for Intestinal Pathologies. Int J Mol Sci 2024; 25:4000. [PMID: 38612809 PMCID: PMC11011967 DOI: 10.3390/ijms25074000] [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: 02/29/2024] [Revised: 03/29/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024] Open
Abstract
Chorioamnionitis is a risk factor for necrotizing enterocolitis (NEC). Ureaplasma parvum (UP) is clinically the most isolated microorganism in chorioamnionitis, but its pathogenicity remains debated. Chorioamnionitis is associated with ileal barrier changes, but colonic barrier alterations, including those of the mucus barrier, remain under-investigated, despite their importance in NEC pathophysiology. Therefore, in this study, the hypothesis that antenatal UP exposure disturbs colonic mucus barrier integrity, thereby potentially contributing to NEC pathogenesis, was investigated. In an established ovine chorioamnionitis model, lambs were intra-amniotically exposed to UP or saline for 7 d from 122 to 129 d gestational age. Thereafter, colonic mucus layer thickness and functional integrity, underlying mechanisms, including endoplasmic reticulum (ER) stress and redox status, and cellular morphology by transmission electron microscopy were studied. The clinical significance of the experimental findings was verified by examining colon samples from NEC patients and controls. UP-exposed lambs have a thicker but dysfunctional colonic mucus layer in which bacteria-sized beads reach the intestinal epithelium, indicating undesired bacterial contact with the epithelium. This is paralleled by disturbed goblet cell MUC2 folding, pro-apoptotic ER stress and signs of mitochondrial dysfunction in the colonic epithelium. Importantly, the colonic epithelium from human NEC patients showed comparable mitochondrial aberrations, indicating that NEC-associated intestinal barrier injury already occurs during chorioamnionitis. This study underlines the pathogenic potential of UP during pregnancy; it demonstrates that antenatal UP infection leads to severe colonic mucus barrier deficits, providing a mechanistic link between antenatal infections and postnatal NEC development.
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Affiliation(s)
- Charlotte van Gorp
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Ilse H. de Lange
- Department of Pediatrics, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6229 ER Maastricht, The Netherlands;
| | - Matthias C. Hütten
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
- Neonatology, Department of Pediatrics, University Hospital RWTH Aachen, 52074 Aachen, Germany
| | - Carmen López-Iglesias
- Microscopy CORE Lab, Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6211 LK Maastricht, The Netherlands; (C.L.-I.); (K.K.)
| | - Kimberly R. I. Massy
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Lilian Kessels
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Kèvin Knoops
- Microscopy CORE Lab, Maastricht Multimodal Molecular Imaging Institute (M4I), Maastricht University, 6211 LK Maastricht, The Netherlands; (C.L.-I.); (K.K.)
| | - Iris Cuijpers
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 5911 BV Venlo, The Netherlands; (I.C.); (M.M.J.P.E.S.); (F.J.T.)
| | - Mireille M. J. P. E. Sthijns
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 5911 BV Venlo, The Netherlands; (I.C.); (M.M.J.P.E.S.); (F.J.T.)
| | - Freddy J. Troost
- Food Innovation and Health, Department of Human Biology, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 5911 BV Venlo, The Netherlands; (I.C.); (M.M.J.P.E.S.); (F.J.T.)
| | - Wim G. van Gemert
- Department of Surgery, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, 6229 ER Maastricht, The Netherlands;
| | - Owen B. Spiller
- Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff CF14 4XW, UK;
| | - George M. H. Birchenough
- Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, 40530 Gothenburg, Sweden;
| | - Luc J. I. Zimmermann
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
| | - Tim G. A. M. Wolfs
- Department of Pediatrics, School for Oncology and Reproduction (GROW), Maastricht University, 6229 ER Maastricht, The Netherlands; (C.v.G.); (M.C.H.); (K.R.I.M.); (L.K.); (L.J.I.Z.)
- Department of Biomedical Engineering (BMT), School for Cardiovascular Diseases (CARIM), Maastricht University, 6229 ER Maastricht, The Netherlands
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Huo J, Zhang R, Wu X, Fu C, Hu J, Hu X, Sun W, Chen Z, Zhu X. Active polypeptide MDANP protect against necrotizing enterocolitis (NEC) by regulating the PERK-eIF2ɑ-QRICH1 axis. Sci Rep 2023; 13:22912. [PMID: 38129421 PMCID: PMC10739873 DOI: 10.1038/s41598-023-44194-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 10/04/2023] [Indexed: 12/23/2023] Open
Abstract
The effect of MDANP effects on ER stress signalling not well known or elucidated. Endoplasmic reticulum (ER) stress plays a critical role in necrotizing enterocolitis (NEC) pathogenesis through the PERK-eIF2ɑ-QRICH1 axis. The present study aimed to explore the protective effects of MDANP in NEC development. Firstly, a function screening was designed to identify the candidate peptides in human milk, and then the identified peptides were validated in NEC patients. In vivo, NEC was induced in mice pups and divided into four groups: (1) control group, (2) NEC group, (3) MDANP + NEC group, and (4) NS + NEC group. In vitro, lentivirus-mediated QRICH1 silencing, was used to transfect NCM460 cell lines, then stimulated with LPS. After LPS stimulation, cells were treated with chemically synthesized MDANP, and the essential proteins in the QRICH1 signalling pathway in cells were tested and compared. After the small-scale screening, a peptide (SKSKKFRRPDIQYPDATDED) named MDANP was determined as the principal peptide. Its protective effect against NEC through inhibiting the expression of ERS key proteins and impeding the intestinal cells' apoptosis was observed in the animal models. Furthermore, the inhibitive effect of MDANP on apoptosis of intestinal epithelial cells through modulating the PERK-eIF2ɑ-QRICH1 ERS pathway was also confirmed in vitro. Taken together, our data suggest that MDANP effectively ameliorates apoptosis in NEC through attenuating PERK-eIF2ɑ-QRICH1.
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Affiliation(s)
- Jie Huo
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
- Department of Neonatology, Yangzhou Maternity and Child Health Care Hospital, Yangzhou, People's Republic of China
| | - Rui Zhang
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
| | - Xinping Wu
- Department of Neonatology, Yangzhou Maternity and Child Health Care Hospital, Yangzhou, People's Republic of China
| | - Changchang Fu
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
| | - Jinhui Hu
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
- Neonatal Medical Center, Huai'an Maternity and Child Health Care Hospital, Xuzhou Medical University, Huai'an, People's Republic of China
| | - Xiaohan Hu
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
| | - Wenqiang Sun
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
| | - Zhenjiang Chen
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China
| | - Xueping Zhu
- Department of Neonatology, Children's Hospital of Soochow University, No. 92 Zhongnan Street, Industrial Park, Suzhou, Jiangsu, 215025, People's Republic of China.
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HSPA5 Inhibitor Meliorate DSS-Induced Colitis through HSPA1A/CHIP. DISEASE MARKERS 2022; 2022:7115181. [PMID: 35872700 PMCID: PMC9300310 DOI: 10.1155/2022/7115181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/27/2022] [Indexed: 12/01/2022]
Abstract
Objective Ulcerative colitis (UC) is closely related to immune response, in which Treg cells (Tregs) suppress the autoimmune response of effector T cells to maintain homeostasis. As a marker of endoplasmic reticulum stress (ERS), HSPA5 was highly expressed in the colon tissue of UC patients. This study is aimed at evaluating the therapeutic effect of HSPA5 inhibitor (HA15) on dextran sulfate sodium- (DSS-) induced ulcerative colitis in mice and explored the effect and related mechanism of HSPA5 inhibitor on the differentiation and function of Tregs. Methods Thirty-two C57BL/6 mice were randomly divided into four groups (8 mice per group): normal control group, DSS model group, HSPA5 inhibitor (HA15) group (intraperitoneal injection), and dexamethasone (DXM) group (intraperitoneal injection). Except for the blank control group, the other groups were induced with 3% DSS for 7 days and then given corresponding intervention therapy for 7 days. Results The disease activity index (DAI) score, colon length, histopathological changes, and scores of DSS-induced mice show that HA15 could significantly improve the degree of inflammation in ulcerative colitis. Moreover, HA15 can better inhibit the expression of HSPA5, HSPA1A, and CHIP in the colon and increase the level of FOXP3 mRNA. Finally, the content of Treg cells and the levels of IL-10 and TGF-β1 were significantly increased, and the levels of IL-6 were significantly reduced. Conclusions HA15 can improve the differentiation and function of Treg cells by inhibiting the HSPA1A/CHIP pathway, thereby improving ulcerative colitis. Therefore, inhibiting the expression of HSPA5 may serve as a new approach to treat ulcerative colitis.
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Bao ZK, Mi YH, Xiong XY, Wang XH. Sulforaphane Ameliorates the Intestinal Injury in Necrotizing Enterocolitis by Regulating the PI3K/Akt/GSK-3 β Signaling Pathway. Can J Gastroenterol Hepatol 2022; 2022:6529842. [PMID: 35600210 PMCID: PMC9117068 DOI: 10.1155/2022/6529842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 04/01/2022] [Indexed: 11/17/2022] Open
Abstract
Objective Necrotizing enterocolitis (NEC) is a serious neonatal disease; this study aims to investigate the role of sulforaphane (SFN) in NEC-induced intestinal injury. Methods An animal model of NEC was established in newborn mice and intragastrically administrated with SFN; then, the general status and survival of the mice were observed. H&E staining was used to observe the pathological changes of intestinal tissues. ELISA, immunohistochemical staining, and flow cytometry assays were used to detect the levels of inflammatory factors, including TNF-α, IL-6, and IL-17, the expression of Bax, Bcl-2, TLR4, and NF-κB, and the percentages of the Th17 and Treg cells, respectively. GSK-3β expression levels were measured by immunofluorescence. IEC-6 and FHC cells were induced with LPS to mimic NEC in vitro and coincubated with SFN; then, the inflammatory factor levels and cell apoptosis rate were detected. Finally, Western blot was used to assess the expression of PI3K/Akt/GSK-3β pathway-related proteins in vitro and in vivo. Results SFN improved the survival rate of NEC mice during modeling, alleviated the severity of the intestinal injury, and reduced the proportion of Th17/Treg cells. SFN could inhibit TLR4 and NF-κB levels, decrease the release of inflammatory factors TNF-α and IL-6, suppress Bax expression, increase Bcl-2 expression, and inhibit apoptosis both in in vitro and in vivo models of NEC. Meanwhile, SFN regulated the expression of PI3K/Akt/GSK-3β pathway-related proteins in vitro and in vivo. Conclusion SFN relieved the inflammatory response and apoptosis by regulating the PI3K/Akt/GSK-3β signaling pathway, thereby alleviating NEC in model mice and cells.
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Affiliation(s)
- Zhong-Kun Bao
- Department of Radiology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yan-Hong Mi
- Department of Radiology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang Province, China
| | - Xiao-Yu Xiong
- Department of Neonatology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang Province, China
| | - Xin-Hong Wang
- Department of Radiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Zhou Y, Liu Y, Peng Q, Li F, Chen F. Deletion of β-arrestin2 alleviates autistic-like behavior caused by dopaminergic system abnormality through an apoptosis pathway in mice. Biochem Biophys Res Commun 2022. [DOI: 10.1016/j.bbrc.2022.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Chen LH, Chang SS, Chang HY, Wu CH, Pan CH, Chang CC, Chan CH, Huang HY. Probiotic supplementation attenuates age-related sarcopenia via the gut-muscle axis in SAMP8 mice. J Cachexia Sarcopenia Muscle 2022; 13:515-531. [PMID: 34766473 PMCID: PMC8818665 DOI: 10.1002/jcsm.12849] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 08/19/2021] [Accepted: 10/01/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Age-related muscle dysfunctions are common disorders resulting in poor quality of life in the elderly. Probiotic supplementation is a potential strategy for preventing age-related sarcopenia as evidence suggests that probiotics can enhance muscle function via the gut-muscle axis. However, the effects and mechanisms of probiotics in age-related sarcopenia are currently unknown. In this study, we examined the effects of Lactobacillus casei Shirota (LcS), a probiotic previously reported to improve muscle function in young adult mice. METHODS We administered LcS (1 × 108 or 1 × 109 CFU/mouse/day) by oral gavage to senescence-accelerated mouse prone-8 mice for 12 weeks (16- to 28-week-old). Sixteen-week-old and 28-week-old SMAP8 mice were included as non-aged and aged controls, respectively. Muscle condition was evaluated using dual-energy X-ray absorptiometry for muscle mass, holding impulse and grip strength tests for muscle strength, and oxygen consumption rate, gene expressions of mitochondrial biogenesis, and mitochondrial number assays for mitochondria function. Inflammatory cytokines were determined using enzyme-linked immunosorbent assay. Gas chromatography-mass spectrometry was utilized to measure the short-chain fatty acid levels. The gut microbiota was analysed based on the data of 16S rRNA gene sequencing of mouse stool. RESULTS The LcS supplementation reduced age-related declines in muscle mass (>94.6%, P < 0.04), strength (>66% in holding impulse and >96.3% in grip strength, P < 0.05), and mitochondrial function (P < 0.05). The concentration of short-chain fatty acids (acetic, isobutyric, butyric, penic, and hexanoic acid) was recovered by LcS (>65.9% in the mice given high dose of LcS, P < 0.05) in the aged mice, and LcS attenuated age-related increases in inflammation (P < 0.05) and reactive oxygen species (>89.4%, P < 0.001). The high dose of LcS supplementation was also associated with distinct microbiota composition as indicated by the separation of groups in the beta-diversity analysis (P = 0.027). LcS supplementation altered predicted bacterial functions based on the gut microbiota. Apoptosis (P = 0.026), p53 signalling (P = 0.017), and non-homologous end-joining (P = 0.031) were significantly reduced, whereas DNA repair and recombination proteins (P = 0.043), RNA polymerase (P = 0.008), and aminoacyl-tRNA biosynthesis (P = 0.003) were increased. Finally, the genera enriched by high-dose LcS [linear discriminant analysis (LDA) score > 2.0] were positively correlated with healthy muscle and physiological condition (P < 0.05), while the genera enriched in aged control mice (LDA score > 2.0) were negatively associated with healthy muscle and physiological condition (P < 0.05). CONCLUSIONS Lactobacillus casei Shirota represents an active modulator that regulates the onset and progression of age-related muscle impairment potentially via the gut-muscle axis.
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Affiliation(s)
- Li-Han Chen
- Institute of Fisheries Science, National Taiwan University, Taipei, Taiwan.,Department of Life Science, National Taiwan University, Taipei, Taiwan
| | - Shy-Shin Chang
- Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Family Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Hsin-Yi Chang
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Chieh-Hsi Wu
- School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Chun-Hsu Pan
- School of Pharmacy, Taipei Medical University, Taipei, Taiwan.,Ph.D. Program in Drug Discovery and Development Industry, College of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Chun-Chao Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan.,Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ching-Hung Chan
- Department of Chemical Engineering and Biotechnology, Tatung University, Taipei, Taiwan
| | - Hui-Yu Huang
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
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Differential Expression Profiles and Functional Prediction of circRNAs in Necrotizing Enterocolitis. BIOMED RESEARCH INTERNATIONAL 2021; 2021:9862066. [PMID: 34778461 PMCID: PMC8581514 DOI: 10.1155/2021/9862066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 10/12/2021] [Indexed: 12/31/2022]
Abstract
Circular RNAs (circRNAs), a novel type of noncoding RNAs, have been demonstrated to behave as microRNA (miRNA) sponges to exert their effects during pathological processes of diseases. However, the roles of circRNAs have not been explored in necrotizing enterocolitis (NEC). This study sought to identify differentially expressed circRNAs and predict their potential biological functions in NEC. circRNA expression profiles in terminal ileum from newborn rats with NEC and normal controls were explored using next-generation sequencing. In the NEC group, 53 circRNAs were significantly differentially expressed, including 9 upregulated and 44 downregulated. Gene ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses were conducted, and circRNA-miRNA interaction networks were generated to predict the potential roles of circRNAs in NEC progression. Further investigation revealed that most circRNAs include miRNA binding sites and that some are implicated in NEC development. In conclusion, this study's findings demonstrate that differentially expressed circRNAs are involved in NEC development via their interactions with miRNAs, making them prospective targets for NEC diagnosis and treatment.
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Lau E, Lee C, Li B, Pierro A. Endoplasmic reticulum stress in the acute intestinal epithelial injury of necrotizing enterocolitis. Pediatr Surg Int 2021; 37:1151-1160. [PMID: 34117913 DOI: 10.1007/s00383-021-04929-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/10/2021] [Indexed: 03/07/2023]
Abstract
Endoplasmic reticulum (ER) is a dynamic organelle that has many functions including protein synthesis, lipid synthesis, and calcium metabolism. Any perturbation in the ER such as accumulation of unfolded or misfolded proteins in the ER lumen causes ER stress. ER stress has been implicated in many intestinal inflammatory diseases. However, the role of ER stress in acute intestinal epithelial injuries such as necrotizing enterocolitis in preterm neonates, remains incompletely understood. In this review, we introduce ER structure, functions and summarize the intracellular signaling pathways involved in unfolded protein response (UPR), a survival mechanism in which cells exert an adaptive function to restore homeostasis in the ER. However, intense and prolonged ER stress induces apoptotic response which results in apoptotic cell death. We also discuss and highlight recent advances that have improved our understanding of the molecular mechanisms that regulate the ER stress in acute intestinal epithelial injuries such as necrotizing enterocolitis (NEC). We focus on the role of ER stress in influencing gut homeostasis in the neonatal period and on the potential therapeutic interventions to alleviate ER stress-induced cell death in NEC.
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Affiliation(s)
- Ethan Lau
- Division of General and Thoracic Surgery, The Hospital for Sick Children, University of Toronto, 1526-555 University Ave, Toronto, ON, M5G 1X8, Canada
| | - Carol Lee
- Division of General and Thoracic Surgery, The Hospital for Sick Children, University of Toronto, 1526-555 University Ave, Toronto, ON, M5G 1X8, Canada
| | - Bo Li
- Division of General and Thoracic Surgery, The Hospital for Sick Children, University of Toronto, 1526-555 University Ave, Toronto, ON, M5G 1X8, Canada
| | - Agostino Pierro
- Division of General and Thoracic Surgery, The Hospital for Sick Children, University of Toronto, 1526-555 University Ave, Toronto, ON, M5G 1X8, Canada.
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Zheng Y, Zhang B, Guan H, Jiao X, Yang J, Cai J, Liu Q, Zhang Z. Selenium deficiency causes apoptosis through endoplasmic reticulum stress in swine small intestine. Biofactors 2021; 47:788-800. [PMID: 34128579 DOI: 10.1002/biof.1762] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 05/21/2021] [Indexed: 12/13/2022]
Abstract
Selenium (Se) plays a crucial role in intestinal health. However, the specific mechanism by which deficiency of Se causes intestinal damage remains unclear. This study was to explore whether Se deficiency can cause ER stress and induce apoptosis in swine small intestine. We established the Se deficiency swine model in vivo and the intestinal epithelial (IPEC-J2) cell Se deficiency model in vitro. The results of morphological observation showed that Se deficiency caused structural damage in intestinal villi and the decrease of goblet cell structure. The apoptotic characteristics such as nucleolar condensation, mitochondrial swelling, and apoptotic bodies were observed in the IPEC-J2 cells. The results of acridine orange/ethidium bromide and mitochondrial membrane potential fluorescence staining in vitro showed that there were more apoptotic cells in the Se-deficiency group than that in the control group. The protein and/or mRNA expression levels of Bax, Bcl-2, caspase 3, caspase 8, caspase 9, cytc, PERK, ATF6, IRE, XBP1, CHOP, GRP78, which are related to ER stress-apoptosis pathway, were significantly increased in the Se-deficient group which compared with the control group in vivo and in vitro were consistent. These results indicated that Se deficiency induced ER stress and increased the apoptosis in swine small intestine and IPEC-J2 cells and then caused the damage in swine small intestinal tissue. Besides, the results of gene expressions in our experiment proved that ER stress induced by Se deficiency promoted apoptosis. These results filled the blank in the mechanism of Se deficiency-induced intestinal injury in swine.
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Affiliation(s)
- Yingying Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Bo Zhang
- Fushun Center for Animal Epidemic Disease Prevention and Control, Fushun, China
| | - Haoyue Guan
- College of Animal Science and Veterinary Medicine, Southwest Minzu University, Chengdu, China
| | - Xing Jiao
- China Institute of Water Resources and Hydropower Research, Beijing, China
| | - Jie Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Jingzeng Cai
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Qi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Ziwei Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
- Key Laboratory of the Provincial Education, Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin, China
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Li B, Lee C, Chuslip S, Lee D, Biouss G, Wu R, Koike Y, Miyake H, Ip W, Gonska T, Pierro A. Intestinal epithelial tight junctions and permeability can be rescued through the regulation of endoplasmic reticulum stress by amniotic fluid stem cells during necrotizing enterocolitis. FASEB J 2021; 35:e21265. [PMID: 33373067 DOI: 10.1096/fj.202001426r] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/30/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023]
Abstract
Necrotizing enterocolitis (NEC) is one of the most severe gastrointestinal diseases affecting premature infants. It has been shown that NEC is associated with disrupted intestinal barrier and dysregulated endoplasmic reticulum (ER)-stress response. It has also been shown that stem cells derived from amniotic fluid (AFSC) rescued intestinal injury in experimental NEC. Herein, we hypothesized that the beneficial effects of AFSC in the injured intestine are due to the restoration of intestinal barrier function. We evaluated intestinal barrier function using an ex vivo intestinal organoid model of NEC. We found that AFSC restored the expression and localization of tight junction proteins in intestinal organoids, and subsequently decreased epithelial permeability. AFSC rescued tight junction expression by inducing a protective ER stress response that prevents epithelial cell apoptosis in injured intestinal organoids. Finally, we validated these results in our experimental mouse model of NEC and confirmed that AFSC induced sustained ER stress and prevented intestinal apoptosis. This response led to the restoration of tight junction expression and localization, which subsequently reduced intestinal permeability in NEC pups. These findings confirm that intestinal barrier function is disrupted during NEC intestinal injury, and further demonstrate the disruption can be reversed by the administration of AFSC through the activation of the ER stress pathway. This study provides insight into the pathogenesis of NEC and highlights potential therapeutic targets for the treatment of NEC.
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Affiliation(s)
- Bo Li
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Carol Lee
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Sinobol Chuslip
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Dorothy Lee
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - George Biouss
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Richard Wu
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Yuhki Koike
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Hiromu Miyake
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Wan Ip
- Division of Gastroenterology, Hepatology and Nutrition, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Tanja Gonska
- Division of Gastroenterology, Hepatology and Nutrition, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Agostino Pierro
- Division of General and Thoracic Surgery, Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
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11
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Zmora O, Gutzeit O, Segal L, Boulos S, Millo Z, Ginsberg Y, Khatib N, Dabbah-Assad F, Fainaru O, Weiner Z, Beloosesky R. Prophylactic antenatal N-Acetyl Cysteine administration combined with postnatal administration can decrease mortality and injury markers associated with necrotizing enterocolitis in a rat model. PLoS One 2020; 15:e0233612. [PMID: 32479520 PMCID: PMC7263616 DOI: 10.1371/journal.pone.0233612] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 05/08/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Necrotizing enterocolitis (NEC) is a devastating gastrointestinal disease of neonates, especially premature neonates. To date, there is no prophylactic treatment against NEC, except breast milk and slow increase in enteral feeding, and there is no antenatal prophylaxis. AIMS To assess possible protective effects of antenatal N-Acetyl Cysteine (NAC) against the intestinal pathophysiological changes associated with NEC in a rat model of NEC and against its associated mortality. METHODS Newborn Sprague-Dawley rats were divided into 5 groups: control (n = 33); NEC (n = 32)-subjected to hypoxia and formula feeding for 4 days to induce NEC; NEC-NAC (n = 34)-with induced NEC and concomitant postnatal NAC administration; NAC-NEC (n = 33)-born to dams treated with NAC for the last 3 days of pregnancy starting at gestational age of 18 days, and then subjected to induced NEC after birth; NAC-NEC-NAC (n = 36)-subjected to induced NEC with both prenatal and postnatal NAC treatment. At day of life 5, weight and survival of pups in the different groups were examined, and pups were euthanized. Ileal TNF-α, IL-6, IL-1β, IL-10, NFkB p65, iNOS and cleaved caspase 3 protein levels (western blot) and mRNA expression (RT-PCR) were compared between groups. RESULTS Pup mortality was significantly reduced in the NAC-NEC-NAC group compared to NEC (11% vs. 34%, P<0.05). Ileal protein levels and mRNA expression of all injury markers tested except IL-10 were significantly increased in NEC compared to control. These markers were significantly reduced in all NAC treatment groups (NEC-NAC, NAC-NEC, and NAC-NEC-NAC) compared to NEC. The most pronounced decrease was observed in the NAC-NEC NAC group. CONCLUSIONS Antenatal NAC decreases injury markers and mortality associated with NEC in a rat model. Antenatal administration of NAC may present a novel approach for NEC prophylaxis in pregnancies with risk for preterm birth.
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Affiliation(s)
- Osnat Zmora
- Department of Pediatric Surgery, Shamir Medical Center, Zerifin, Israel
| | - Ola Gutzeit
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Linoy Segal
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Sari Boulos
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Zvika Millo
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Yuval Ginsberg
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Nizar Khatib
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Fadwa Dabbah-Assad
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Ofer Fainaru
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Zeev Weiner
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
| | - Ron Beloosesky
- Department of Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel
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