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Mao Y, Wang J, Wang Y, Fu Z, Dong L, Liu J. Hypoxia induced exosomal Circ-ZNF609 promotes pre-metastatic niche formation and cancer progression via miR-150-5p/VEGFA and HuR/ZO-1 axes in esophageal squamous cell carcinoma. Cell Death Discov 2024; 10:133. [PMID: 38472174 DOI: 10.1038/s41420-024-01905-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
Exosomes derived from cancer are regarded as significant mediators of cancer-host crosstalk. Hypoxia, on the other hand, is one of the essential characteristics of solid tumors. This research set out to discover how circulating exosomes from hypoxic esophageal squamous cell carcinoma (ESCC) contribute to the formation of metastatic niches and distant metastasis. First, we noticed that human umbilical vein endothelial cells (HUVECs) had their tight connections disrupted and the expression of proteins involved in angiogenesis boosted by ESCC hypoxic exosomes. Hypoxia significantly induced Circ-ZNF609 expression in exosomes from ESCC, which was then internalized by HUVECs, as determined by circular RNA screening. High Circ-ZNF609 expression in HUVECs facilitated angiogenesis and vascular permeability, thereby promoting pre-metastatic niche formation, and enhancing distant metastasis in vitro and in vivo. Exosomal Circ-ZNF609 activated vascular endothelial growth factor A (VEGFA) mechanistically by sponging miR-150-5p. Exosomal Circ-ZNF609 also interacted with HuR and inhibited HuR binding to ZO-1, Claudin-1, and Occludin mRNAs, thereby reducing their translation. Collectively, our findings identified an essential function for exosomal Circ-ZNF609 from ESCC cells, suggesting the potential therapeutic value of exosomes for ESCC patients.
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Affiliation(s)
- Yu Mao
- Department of Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei, China.
- Key Laboratory of Research on Molecular Mechanism of Gastrointestinal Tumors in Qinhuangdao, Qinhuangdao, Hebei, China.
| | - Jiahao Wang
- Department of Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei, China
| | - Yimin Wang
- Key Laboratory of Research on Molecular Mechanism of Gastrointestinal Tumors in Qinhuangdao, Qinhuangdao, Hebei, China
- Department of General Surgery, First Hospital of Qinhuangdao, Hebei Medical University, Qinhuangdao, China
| | - Zhanzhao Fu
- Department of Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei, China
| | - Lixin Dong
- Department of Oncology, First Hospital of Qinhuangdao, Qinhuangdao, Hebei, China
| | - Jia Liu
- Department of Medical Oncology, Jerome Lipper Multiple Myeloma Center, Dana Farber Cancer Institute, Boston, MA, USA
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Guo H, Li J, Dong Y, Gao H, Wang P. CLDN6 inhibited cellular biological function of nonsmall cell lung cancer cells through suppressing aerobic glycolysis via the RIP1/ASK1/JNK axis. J Biochem Mol Toxicol 2024; 38:e23682. [PMID: 38462752 DOI: 10.1002/jbt.23682] [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: 01/03/2023] [Revised: 09/25/2023] [Accepted: 02/23/2024] [Indexed: 03/12/2024]
Abstract
Claudin-6 (CLDN6) has been extensively studied in different tumors to date. However, in the case of nonsmall cell lung cancer (NSCLC), CLDN6 has a largely unknown role and molecular mechanism. We detected the expression of CLDN6 in NSCLC tissues and cells using reverse transcription-quantitative polymerase chain reaction (PCR) and western blot assays. A gain-of-function experiment was performed to evaluate the biological effects of CLDN6 on NSCLC cell behaviors. Methylation-specific PCR was utilized to detect the DNA methylation of CLDN6 gene promoter region. The interaction of CLDN6 and receptor interacting protein 1 (RIP1) was determined by coimmunoprecipitation assay. Furthermore, the modulation of CLDN6 on RIP1/apoptosis signal-regulating kinase 1 (ASK1)/c-Jun N-terminal kinase (JNK) axis was confirmed. The results showed that in NSCLC tissues and cells, CLDN6 expression level was declined, and was associated with a high level of DNA methylation. CLDN6 overexpression suppressed the viability, invasion, migration, and promoted cell apoptosis. Besides, the enhanced expression of CLDN6 reduced the glycolysis and the dysfunction of mitochondrial respiration of NSCLC cells. Mechanistic investigation confirmed that CLDN6 interacted with RIP1 and inhibited cellular biological function of NSCLC cells via RIP1/ASK1/JNK axis. Besides, CLDN6 overexpression inhibited tumor growth in vivo. In conclusion, CLDN6 inhibited NSCLC cell proliferation through inactivating aerobic glycolysis via the RIP1/ASK1/JNK axis.
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Affiliation(s)
- Hua Guo
- Department of Respiratory and Critical Care Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Jianying Li
- Department of Respiratory and Critical Care Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Yu Dong
- Department of Respiratory and Critical Care Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Humei Gao
- Department of Respiratory and Critical Care Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, China
| | - Peng Wang
- Department of Respiratory and Critical Care Medicine, Xi'an Central Hospital, The Affiliated Hospital of Xi'an Jiaotong University College of Medicine, Xi'an, China
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3
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Asghari K, Niknam Z, Mohammadpour-Asl S, Chodari L. Cellular junction dynamics and Alzheimer's disease: a comprehensive review. Mol Biol Rep 2024; 51:273. [PMID: 38302794 DOI: 10.1007/s11033-024-09242-w] [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: 10/31/2023] [Accepted: 01/11/2024] [Indexed: 02/03/2024]
Abstract
Alzheimer's disease (AD) is a prevalent neurodegenerative disorder characterized by progressive neuronal damage and cognitive decline. Recent studies have shed light on the involvement of not only the blood-brain barrier (BBB) dysfunction but also significant alterations in cellular junctions in AD pathogenesis. In this review article, we explore the role of the BBB and cellular junctions in AD pathology, with a specific focus on the hippocampus. The BBB acts as a crucial protective barrier between the bloodstream and the brain, maintaining brain homeostasis and regulating molecular transport. Preservation of BBB integrity relies on various junctions, including gap junctions formed by connexins, tight junctions composed of proteins such as claudins, occludin, and ZO-1, as well as adherence junctions involving molecules like vascular endothelial (VE) cadherin, Nectins, and Nectin-like molecules (Necls). Abnormalities in these junctions and junctional components contribute to impaired neuronal signaling and increased cerebrovascular permeability, which are closely associated with AD advancement. By elucidating the underlying molecular mechanisms governing BBB and cellular junction dysfunctions within the context of AD, this review offers valuable insights into the pathogenesis of AD and identifies potential therapeutic targets for intervention.
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Affiliation(s)
- Keyvan Asghari
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
| | - Zahra Niknam
- Neurophysiology Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Shadi Mohammadpour-Asl
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
- Department of Physiology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Leila Chodari
- Neurophysiology Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, Iran.
- Department of Physiology, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
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4
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Bao L, Sun H, Zhao Y, Feng L, Wu K, Shang S, Xu J, Shan R, Duan S, Qiu M, Zhang N, Hu X, Zhao C, Fu Y. Hexadecanamide alleviates Staphylococcus aureus-induced mastitis in mice by inhibiting inflammatory responses and restoring blood-milk barrier integrity. PLoS Pathog 2023; 19:e1011764. [PMID: 37948460 PMCID: PMC10664928 DOI: 10.1371/journal.ppat.1011764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/22/2023] [Accepted: 10/18/2023] [Indexed: 11/12/2023] Open
Abstract
Subacute ruminal acidosis (SARA) has been demonstrated to promote the development of mastitis, one of the most serious diseases in dairy farming worldwide, but the underlying mechanism is unclear. Using untargeted metabolomics, we found hexadecanamide (HEX) was significantly reduced in rumen fluid and milk from cows with SARA-associated mastitis. Herein, we aimed to assess the protective role of HEX in Staphylococcus aureus (S. aureus)- and SARA-induced mastitis and the underlying mechanism. We showed that HEX ameliorated S. aureus-induced mastitis in mice, which was related to the suppression of mammary inflammatory responses and repair of the blood-milk barrier. In vitro, HEX depressed S. aureus-induced activation of the NF-κB pathway and improved barrier integrity in mouse mammary epithelial cells (MMECs). In detail, HEX activated PPARα, which upregulated SIRT1 and subsequently inhibited NF-κB activation and inflammatory responses. In addition, ruminal microbiota transplantation from SARA cows (S-RMT) caused mastitis and aggravated S. aureus-induced mastitis, while these changes were reversed by HEX. Our findings indicate that HEX effectively attenuates S. aureus- and SARA-induced mastitis by limiting inflammation and repairing barrier integrity, ultimately highlighting the important role of host or microbiota metabolism in the pathogenesis of mastitis and providing a potential strategy for mastitis prevention.
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Affiliation(s)
- Lijuan Bao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Hao Sun
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Yihong Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Lianjun Feng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Keyi Wu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Shan Shang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Jiawen Xu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Ruping Shan
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Shiyu Duan
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Min Qiu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Naisheng Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Xiaoyu Hu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Caijun Zhao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Yunhe Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
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Raya-Sandino A, Lozada-Soto KM, Rajagopal N, Garcia-Hernandez V, Luissint AC, Brazil JC, Cui G, Koval M, Parkos CA, Nangia S, Nusrat A. Claudin-23 reshapes epithelial tight junction architecture to regulate barrier function. Nat Commun 2023; 14:6214. [PMID: 37798277 PMCID: PMC10556055 DOI: 10.1038/s41467-023-41999-9] [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: 10/31/2022] [Accepted: 09/26/2023] [Indexed: 10/07/2023] Open
Abstract
Claudin family tight junction proteins form charge- and size-selective paracellular channels that regulate epithelial barrier function. In the gastrointestinal tract, barrier heterogeneity is attributed to differential claudin expression. Here, we show that claudin-23 (CLDN23) is enriched in luminal intestinal epithelial cells where it strengthens the epithelial barrier. Complementary approaches reveal that CLDN23 regulates paracellular ion and macromolecule permeability by associating with CLDN3 and CLDN4 and regulating their distribution in tight junctions. Computational modeling suggests that CLDN23 forms heteromeric and heterotypic complexes with CLDN3 and CLDN4 that have unique pore architecture and overall net charge. These computational simulation analyses further suggest that pore properties are interaction-dependent, since differently organized complexes with the same claudin stoichiometry form pores with unique architecture. Our findings provide insight into tight junction organization and propose a model whereby different claudins combine to form multiple distinct complexes that modify epithelial barrier function by altering tight junction structure.
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Affiliation(s)
- Arturo Raya-Sandino
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | | | - Nandhini Rajagopal
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
| | | | - Anny-Claude Luissint
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jennifer C Brazil
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Guiying Cui
- Department of Pediatrics, Emory + Children's Center for Cystic Fibrosis and Airways Disease Research, Emory University School of Medicine, Atlanta, GA, USA
| | - Michael Koval
- Departments of Medicine and Cell Biology, Emory University School of Medicine, Atlanta, GA, USA
| | - Charles A Parkos
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Shikha Nangia
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA.
| | - Asma Nusrat
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA.
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Kang TH, Shin S, Park J, Lee BR, Lee SI. Pyroptosis-Mediated Damage Mechanism by Deoxynivalenol in Porcine Small Intestinal Epithelial Cells. Toxins (Basel) 2023; 15:toxins15040300. [PMID: 37104238 PMCID: PMC10146237 DOI: 10.3390/toxins15040300] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/06/2023] [Accepted: 04/17/2023] [Indexed: 04/28/2023] Open
Abstract
Deoxynivalenol (DON) is known as a vomitoxin, which frequently contaminates feedstuffs, such as corn, wheat, and barley. Intake of DON-contaminated feed has been known to cause undesirable effects, including diarrhea, emesis, reduced feed intake, nutrient malabsorption, weight loss, and delay in growth, in livestock. However, the molecular mechanism of DON-induced damage of the intestinal epithelium requires further investigation. Treatment with DON triggered ROS in IPEC-J2 cells and increased the mRNA and protein expression levels of thioredoxin interacting protein (TXNIP). To investigate the activation of the inflammasome, we confirmed the mRNA and protein expression levels of the NLR family pyrin domain containing 3 (NLRP3), apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC), and caspase-1 (CASP-1). Moreover, we confirmed that caspase mediates the mature form of interleukin-18, and the cleaved form of Gasdermin D (GSDMD) was increased. Based on these results, our study suggests that DON can induce damage through oxidative stress and pyroptosis in the epithelial cells of the porcine small intestine via NLRP3 inflammasome.
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Affiliation(s)
- Tae Hong Kang
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea
| | - Sangsu Shin
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea
- Research Center for Horse Industry, Kyungpook National University, Sangju 37224, Republic of Korea
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea
| | - JeongWoong Park
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea
- Research Center for Horse Industry, Kyungpook National University, Sangju 37224, Republic of Korea
| | - Bo Ram Lee
- Animal Biotechnology Division, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Sang In Lee
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea
- Research Center for Horse Industry, Kyungpook National University, Sangju 37224, Republic of Korea
- Department of Animal Biotechnology, Kyungpook National University, Sangju 37224, Republic of Korea
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7
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Wang Y, Li X, Han Z, Meng M, Shi X, Wang L, Chen M, Chang G, Shen X. iE-DAP Induced Inflammatory Response and Tight Junction Disruption in Bovine Mammary Epithelial Cells via NOD1-Dependent NF-κB and MLCK Signaling Pathway. Int J Mol Sci 2023; 24:ijms24076263. [PMID: 37047240 PMCID: PMC10094069 DOI: 10.3390/ijms24076263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/19/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023] Open
Abstract
γ-D-glutamyl-meso-diaminopimelic acid (iE-DAP), a bacterial cell wall component, can trigger an inflammatory response. A mammary inflammatory response causes tight junction (TJ) dysfunction. This study aimed to explore the effects and involved mechanisms of iE-DAP-induced inflammatory response on the TJ integrity in bovine mammary epithelial cells (BMECs). The results showed that iE-DAP-induced inflammatory response and TJ disruption was associated with increased expression levels of inflammatory cytokines and decreased gene expression of ZO-1 and Occludin, as well as a reduction in transepithelial electrical resistance and elevation in paracellular dextran passage. While MLCK inhibitor ML-7 reversed the TJ disruption induced by iE-DAP. NF-κB inhibitor BAY 11-7085 hindered the activation of NF-κB and MLCK signaling pathways, the inflammatory response and TJ disruption induced by iE-DAP. NOD1-specific shRNA also inhibited the activation of the NOD1/NF-κB signaling pathway and reversed the inflammatory response and TJ injury in iE-DAP-treated BMECs. Above results suggest that iE-DAP activated the NF-κB and MLCK signaling pathway in NOD1-dependent manner, which promoted the transcription of inflammatory cytokines and altered the expression and distribution of tight junction proteins, finally caused inflammatory response and TJ disruption. This study might provide theoretical basis and scientific support for the prevention and treatment of mastitis.
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Park N, Chung JY, Kim MH, Yang WM. Protective effects of inhalation of essential oils from Mentha piperita leaf on tight junctions and inflammation in allergic rhinitis. FRONTIERS IN ALLERGY 2022; 3:1012183. [PMID: 36578435 PMCID: PMC9790934 DOI: 10.3389/falgy.2022.1012183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 11/04/2022] [Indexed: 12/14/2022] Open
Abstract
Allergic rhinitis is one of the most common diseases, which is caused by IgE-mediated reactions to inhaled allergens. Essential oils from the Mentha piperita leaf (EOM) are known to be effective for various diseases, such as respiratory diseases. However, the effect of inhalation of EOM on tight junctions and inflammation related to allergic rhinitis is not yet known. The purpose of this research was to explain the effects of the inhalation of EOM on tight junctions and inflammation of allergic rhinitis through network pharmacology and an experimental study. For that purpose, a pharmacology network analysis was conducted comprising major components of EOM. Based on the network pharmacology prediction results, we evaluated the effect of EOM on histological changes in mice with ovalbumin and PM10-induced allergic rhinitis. Allergic symptoms, infiltration of inflammatory cells, and regulation of ZO-1 were investigated in mice with allergic rhinitis. Other allergic parameters were also analyzed by reverse transcription polymerase chain reaction and western blot in nasal epithelial cells. In the network analysis, the effects of EOM were closely related to tight junctions and inflammation in allergic rhinitis. Consistent with the results from the network analysis, EOM significantly decreased epithelial thickness, mast cell degranulation, goblet cell secretion, and the infiltration of inflammatory cells in nasal tissue. EOM also regulated the MAPK-NF-κB signaling pathway, which was related to tight junctions in nasal epithelial cells. This research confirmed that inhalation of EOM effectively restores tight junctions and suppresses inflammation in the allergic rhinitis model. These results reveal that EOM has a therapeutic mechanism to treat allergic rhinitis.
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Coumans JM, Bolman CA, Oenema A, Lechner L. The effects of a web-based computer-tailored diet and physical activity intervention based on self-determination theory and motivational interviewing: A randomized controlled trial. Internet Interv 2022; 28:100537. [PMID: 35509808 PMCID: PMC9058957 DOI: 10.1016/j.invent.2022.100537] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND According to self-determination theory (SDT), autonomous forms of motivation are more likely to result in sustained behavioral changes than controlled forms. Principles of motivational interviewing (MI) can be applied to facilitate more autonomous forms of motivation. This study investigated whether a combined diet and physical activity (PA) web-based computer-tailored intervention based on SDT and MI, called MyLifestyleCoach, was effective in promoting dietary and PA behaviors. METHODS A two-arm randomized controlled trial with 1142 Dutch adults was conducted. The intervention and control group completed questionnaires at baseline, 6, and 12 months from baseline. Only participants in the intervention condition had access to MyLifestyleCoach. The waiting list control condition had access to the intervention after completing the 12-month follow-up questionnaire. A modified food frequency questionnaire was used to measure dietary behaviors (fruit, vegetables, fish, and unhealthy snacks). The Dutch Short Questionnaire to ASsess Health was used to measure the weekly minutes of moderate-to-vigorous PA (MVPA). Usage data, which is operationalized as completed sessions in this study, was objectively assessed by log data. We conducted two-step linear mixed effect models. In the first step, a model consisting of condition, time, potentially confounding variables and a random intercept for participants was tested. In the second step, an interaction term was added to investigate the intervention's (time × condition) and usage (time × opening session and time × completed sessions) effects over time for the dietary and PA outcomes. RESULTS The findings showed no differences between the groups for all four dietary behaviors and the weekly minutes of MVPA at any of the time points. In-depth analyses showed that participants who followed the opening session of the intervention, in which they received personalized feedback on their behaviors, had a stronger increase in fruit consumption at 6 months and 12 months than participants who did not follow the interventions' opening session. Lastly, participants who followed more sessions in the diet module had a stronger increase in fruit and vegetable consumption at 6 months, and a stronger decrease in the consumption frequency of unhealthy snacks at 12 months post-baseline. CONCLUSION Overall, the intervention was not effective in changing dietary and PA behavior. However, moderation analyses suggest that the intervention is effective in changing dietary behavior for those participants who used the intervention more intensively. Further research should focus on improving intervention use.
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Affiliation(s)
- Juul M.J. Coumans
- Department of Health Psychology, Faculty of Psychology, Open University of the Netherlands, Heerlen, the Netherlands,Corresponding author at: Department of Health Psychology, Faculty of Psychology, Open University of the Netherlands, Valkenburgerweg 177, 6419 AT Heerlen, the Netherlands.
| | - Catherine A.W. Bolman
- Department of Health Psychology, Faculty of Psychology, Open University of the Netherlands, Heerlen, the Netherlands
| | - Anke Oenema
- Department of Health Promotion, Care and Public Health Research Institute (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, the Netherlands
| | - Lilian Lechner
- Department of Health Psychology, Faculty of Psychology, Open University of the Netherlands, Heerlen, the Netherlands
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Disruption of Claudin-Made Tight Junction Barriers by Clostridium perfringens Enterotoxin: Insights from Structural Biology. Cells 2022; 11:cells11050903. [PMID: 35269525 PMCID: PMC8909277 DOI: 10.3390/cells11050903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 02/26/2022] [Accepted: 03/02/2022] [Indexed: 02/01/2023] Open
Abstract
Claudins are a family of integral membrane proteins that enable epithelial cell/cell interactions by localizing to and driving the formation of tight junctions. Via claudin self-assembly within the membranes of adjoining cells, their extracellular domains interact, forming barriers to the paracellular transport of small molecules and ions. The bacterium Clostridium perfringens causes prevalent gastrointestinal disorders in mammals by employing an enterotoxin (CpE) that targets claudins. CpE binds to claudins at or near tight junctions in the gut and disrupts their barrier function, potentially by disabling their assembly or via cell signaling means—the mechanism(s) remain unclear. CpE ultimately destroys claudin-expressing cells through the formation of a cytotoxic membrane-penetrating β-barrel pore. Structures obtained by X-ray crystallography of CpE, claudins, and claudins in complex with CpE fragments have provided the structural bases of claudin and CpE functions, revealing potential mechanisms for the CpE-mediated disruption of claudin-made tight junctions. This review highlights current progress in this space—what has been discovered and what remains unknown—toward efforts to elucidate the molecular mechanism of CpE disruption of tight junction barriers. It further underscores the key insights obtained through structure that are being applied to develop CpE-based therapeutics that combat claudin-overexpressing cancers or modulate tight junction barriers.
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11
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Kolbeck A, Marhavý P, De Bellis D, Li B, Kamiya T, Fujiwara T, Kalmbach L, Geldner N. CASP microdomain formation requires cross cell wall stabilization of domains and non-cell autonomous action of LOTR1. eLife 2022; 11:69602. [PMID: 35029147 PMCID: PMC8794472 DOI: 10.7554/elife.69602] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 01/13/2022] [Indexed: 11/24/2022] Open
Abstract
Efficient uptake of nutrients in both animal and plant cells requires tissue-spanning diffusion barriers separating inner tissues from the outer lumen/soil. However, we poorly understand how such contiguous three-dimensional superstructures are formed in plants. Here, we show that correct establishment of the plant Casparian Strip (CS) network relies on local neighbor communication. We show that positioning of Casparian Strip membrane domains (CSDs) is tightly coordinated between neighbors in wild-type and that restriction of domain formation involves the putative extracellular protease LOTR1. Impaired domain restriction in lotr1 leads to fully functional CSDs at ectopic positions, forming ‘half strips’. LOTR1 action in the endodermis requires its expression in the stele. LOTR1 endodermal expression cannot complement, while cortex expression causes a dominant-negative phenotype. Our findings establish LOTR1 as a crucial player in CSD positioning acting in a directional, non-cell-autonomous manner to restrict and coordinate CS positioning.
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Affiliation(s)
- Andreas Kolbeck
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
| | - Peter Marhavý
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
| | - Damien De Bellis
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
| | - Baohai Li
- Department of Applied Biological Chemistry, University of Tokyo, Tokyo, Japan
| | - Takehiro Kamiya
- Department of Applied Biological Chemistry, University of Tokyo, Tokyo, Japan
| | - Toru Fujiwara
- Department of Applied Biological Chemistry, University of Tokyo, Tokyo, Japan
| | - Lothar Kalmbach
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
| | - Niko Geldner
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, Switzerland
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12
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Li M, Wang Z, Qiu Y, Fu S, Xu Y, Han X, Phouthapane V, Miao J. Taurine protects blood-milk barrier integrity via limiting inflammatory response in Streptococcus uberis infections. Int Immunopharmacol 2021; 101:108371. [PMID: 34789427 DOI: 10.1016/j.intimp.2021.108371] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/28/2021] [Accepted: 11/09/2021] [Indexed: 12/29/2022]
Abstract
Streptococcus uberis (S. uberis) is an important causative agent of mastitis, leading to significant economic losses to dairy industry. This research used a mouse mastitis model to investigate the protective effects of taurine on mammary inflammatory response and blood-milk barrier integrity in S. uberis challenge. The results showed that taurine attenuated S. uberis-induced mammary histopathological changes, especially neutrophil infiltration. The S. uberis-induced expression of pro-inflammatory mediators were decreased significantly by taurine. Further, we demonstrated that taurine limited the S. uberis-induced inflammatory responses via inhibiting the activation of NF-κB and MAPK signaling pathways. Inflammation usually disrupts the mammary barrier system. The recovery of claudin-3 and occludin expressions indicated that attenuation of inflammatory response by taurine can protect the integrity of blood-milk barrier in S. uberis infection. Taken together, our results reveal that the development of taurine as an effective prevention and control strategy for S. uberis-induced mastitis.
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Affiliation(s)
- Ming Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhenglei Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yawei Qiu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaodong Fu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Yuanyuan Xu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiangan Han
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Vanhnaseng Phouthapane
- Department of Livestock and Fisheries, Ministry of Agriculture and Forestry, Vientiane, Laos
| | - Jinfeng Miao
- MOE Joint International Research Laboratory of Animal Health and Food Safety, Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
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13
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Panwar S, Sharma S, Tripathi P. Role of Barrier Integrity and Dysfunctions in Maintaining the Healthy Gut and Their Health Outcomes. Front Physiol 2021; 12:715611. [PMID: 34630140 PMCID: PMC8497706 DOI: 10.3389/fphys.2021.715611] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/27/2021] [Indexed: 01/08/2023] Open
Abstract
Mucosal surface layers are the critical borders throughout epithelial membranes. These epithelial cells segregate luminal material from external environments. However, mucosal linings are also accountable for absorbing nutrients and requiring specific barrier permeability. These functional acts positioned the mucosal epithelium at the epicenter of communications concerning the mucosal immune coordination and foreign materials, such as dietary antigens and microbial metabolites. Current innovations have revealed that external stimuli can trigger several mechanisms regulated by intestinal mucosal barrier system. Crucial constituents of this epithelial boundary are physical intercellular structures known as tight junctions (TJs). TJs are composed of different types transmembrane proteins linked with cytoplasmic adaptors which helps in attachment to the adjacent cells. Disruption of this barrier has direct influence on healthy or diseased condition, as barrier dysfunctions have been interrelated with the initiation of inflammation, and pathogenic effects following metabolic complications. In this review we focus and overview the TJs structure, function and the diseases which are able to influence TJs during onset of disease. We also highlighted and discuss the role of phytochemicals evidenced to enhance the membrane permeability and integrity through restoring TJs levels.
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Affiliation(s)
- Shruti Panwar
- Infection and Immunology, Translational Health Science and Technology Institute, National Capital Region (NCR) Biotech Science Cluster, Faridabad, India
| | - Sapna Sharma
- Gene Regulation Laboratory, School of Biotechnology, Jawaharlal Nehru University, New Delhi, India
| | - Prabhanshu Tripathi
- Food Drug and Chemical Toxicology Division, Council of Scientific and Industrial Research (CSIR)-Indian Institute of Toxicology Research, Lucknow, India
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14
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Lu Y, Dang Q, Bo Y, Su X, Wang L, Sun J, Wei J, Quan C, Li Y. The Expression of CLDN6 in Hepatocellular Carcinoma Tissue and the Effects of CLDN6 on Biological Phenotypes of Hepatocellular Carcinoma Cells. J Cancer 2021; 12:5454-5463. [PMID: 34405008 PMCID: PMC8364659 DOI: 10.7150/jca.55727] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 07/01/2021] [Indexed: 11/23/2022] Open
Abstract
CLDN6, a member of claudin (CLDN) family, was found to be a breast cancer suppressor gene in our early experiments. However, CLDN6 was highly expressed in human hepatocellular carcinoma (hHCC) (TCGA database), and the role of CLDN6 in hHCC is still unclear. To investigate the expression of CLDN6, immunohistochemical staining was performed in hHCC tissues. As a result, hHCC tissues highly expressed CLDN6, and the expression was related to the degree of tumor's differentiation. To research the role of CLDN6 in hHCC cells, CLDN6 was silenced in HepG2 and Hep3B cells which highly expressed CLDN6 through liposome transfection. Results showed that after silencing of CLDN6, the proliferation, migration and invasion abilities of hHCC cells were inhibited. Meanwhile, the expression of E-cadherin was upregulated, and the expression of N-cadherin and Vimentin was downregulated. All the results above indicated that CLDN6 promoted the development of hHCC, and could be a potential target for the treatment of it.
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Affiliation(s)
- Yan Lu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China.,The Department of Anatomy, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Qihua Dang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Yin Bo
- The Department of Pathology, Jilin Provincial Cancer Hospital, 1018 Huguang Road, Changchun, Jilin, 130021, People's Republic of China
| | - Xuejin Su
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Liping Wang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Jiaqi Sun
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Junyuan Wei
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Chengshi Quan
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
| | - Yanru Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin, 130021, People's Republic of China
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15
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Faber SC, McNabb NA, Ariel P, Aungst ER, McCullough SD. Exposure Effects Beyond the Epithelial Barrier: Transepithelial Induction of Oxidative Stress by Diesel Exhaust Particulates in Lung Fibroblasts in an Organotypic Human Airway Model. Toxicol Sci 2021; 177:140-155. [PMID: 32525552 DOI: 10.1093/toxsci/kfaa085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In vitro bronchial epithelial monoculture models have been pivotal in defining the adverse effects of inhaled toxicant exposures; however, they are only representative of one cellular compartment and may not accurately reflect the effects of exposures on other cell types. Lung fibroblasts exist immediately beneath the bronchial epithelial barrier and play a central role in lung structure and function, as well as disease development and progression. We tested the hypothesis that in vitro exposure of a human bronchial epithelial cell barrier to the model oxidant diesel exhaust particulates caused transepithelial oxidative stress in the underlying lung fibroblasts using a human bronchial epithelial cell and lung fibroblast coculture model. We observed that diesel exhaust particulates caused transepithelial oxidative stress in underlying lung fibroblasts as indicated by intracellular accumulation of the reactive oxygen species hydrogen peroxide, oxidation of the cellular antioxidant glutathione, activation of NRF2, and induction of oxidative stress-responsive genes. Further, targeted antioxidant treatment of lung fibroblasts partially mitigated the oxidative stress response gene expression in adjacent human bronchial epithelial cells during diesel exhaust particulate exposure. This indicates that exposure-induced oxidative stress in the airway extends beyond the bronchial epithelial barrier and that lung fibroblasts are both a target and a mediator of the adverse effects of inhaled chemical exposures despite being separated from the inhaled material by an epithelial barrier. These findings illustrate the value of coculture models and suggest that transepithelial exposure effects should be considered in inhalation toxicology research and testing.
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Affiliation(s)
- Samantha C Faber
- Curriculum in Toxicology and Environmental Medicine, UNC Chapel Hill, Chapel Hill, North Carolina 27599
| | - Nicole A McNabb
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, North Carolina 27599
| | - Pablo Ariel
- Microscopy Services Laboratory, Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Emily R Aungst
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, North Carolina 27599
| | - Shaun D McCullough
- Public Health and Integrated Toxicology Division, Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, North Carolina 27599
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16
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Jaswal S, Anand V, Ali SA, Jena MK, Kumar S, Kaushik JK, Mohanty AK. TMT based deep proteome analysis of buffalo mammary epithelial cells and identification of novel protein signatures during lactogenic differentiation. FASEB J 2021; 35:e21621. [PMID: 33977573 DOI: 10.1096/fj.202002476rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 01/04/2023]
Abstract
The lactating mammary gland harbours numerous matured alveoli with their lumen surrounded by differentiated mammary epithelial cells (MECs), which are exclusively involved in milk synthesis and secretion. Buffalo (Bubalus bubalis) is the second major milk-producing animal, and its physiology is different from cattle. The complete protein machinery involved in MECs differentiation is still not defined in ruminants, in particular, buffalo. Therefore, we have studied the differential expression of regulated proteins in the in vitro grown buffalo MECs (BuMECs) at different time points (on 3, 6, 12, and 15 days) of their differentiation in the presence of lactogenic hormones. TMT-based MS analysis identified 4,934 proteins; of them, 681 were differentially expressed proteins (DEPs). The principal component analysis suggested a highly heterogeneous expression of DEPs at the four-time points of hormone treatment, with most of them (307) attained the highest expression on 12 days. Bioinformatics analysis revealed the association of DEPs with 24 KEGG pathways. We observed few new proteins, namely ABCA13, IVL, VPS37, CZIB, RFX7, Rab5, TTLL12, SMEK1, GDI2, and TMEM131 in BuMECs. The function of one of the highly upregulated proteins, namely involucrin in the differentiation of BuMECs was confirmed based on biochemical inhibition assay. The results further conclude that the proteins with higher abundance can be considered as the potential biomarkers for differentiation, and they may have a significant association with the lactation process in buffalo too. The proteome dataset obtained can be used to understand the species-specific variations among other lactating animals.
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Affiliation(s)
- Shalini Jaswal
- Proteomics and Cell Biology Lab, Animal Biotechnology Centre, National Dairy Research Institute (NDRI), Karnal, India
| | - Vijay Anand
- Department of Veterinary Physiology and Biochemistry, Veterinary College and Research Institute (TANUVAS), Orathanadu, India
| | - Syed Azmal Ali
- Proteomics and Cell Biology Lab, Animal Biotechnology Centre, National Dairy Research Institute (NDRI), Karnal, India
| | - Manoj K Jena
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara, India
| | - Sudarshan Kumar
- Proteomics and Cell Biology Lab, Animal Biotechnology Centre, National Dairy Research Institute (NDRI), Karnal, India
| | - Jai K Kaushik
- Proteomics and Cell Biology Lab, Animal Biotechnology Centre, National Dairy Research Institute (NDRI), Karnal, India
| | - Ashok K Mohanty
- Proteomics and Cell Biology Lab, Animal Biotechnology Centre, National Dairy Research Institute (NDRI), Karnal, India
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17
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Takasawa K, Takasawa A, Akimoto T, Magara K, Aoyama T, Kitajima H, Murakami T, Ono Y, Kyuno D, Suzuki H, Osanai M. Regulatory roles of claudin-1 in cell adhesion and microvilli formation. Biochem Biophys Res Commun 2021; 565:36-42. [PMID: 34090208 DOI: 10.1016/j.bbrc.2021.05.070] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 05/19/2021] [Indexed: 02/06/2023]
Abstract
Aberrant expression of tight junction proteins has recently been focused on in the cancer research field. We previously showed that claudin-1 is aberrantly expressed from an early stage of uterine cervical adenocarcinoma and contributes to malignant potentials. To elucidate the molecular mechanisms underlying tumor-promoting roles of claudin-1, we established and analyzed claudin-1 knockout cells. Knockout of claudin-1 suppressed conventional tight junctional functions, barrier and fence functions, and expression of cell adhesion-associated proteins including E-cadherin. Comparative proteome analysis revealed that expression of claudin-1 affected expression of a wide range of proteins, especially proteins that are associated with cell adhesion and actin cytoskeleton remodeling. Interactome analysis of the identified proteins revealed that E-cadherin and focal adhesion kinase play central roles in the claudin-1-dependently affected protein network. Moreover, knockout of claudin-1 significantly suppressed microvilli formation and activity of Ezrin/Radixin/Moesin. Taken together, the results indicate that expression of claudin-1 affects not only conventional tight junction function but also expression and activity of a wide range of proteins, especially proteins that are associated with cell adhesion and actin cytoskeleton remodeling, to contribute to malignant potentials and microvilli formation in cervical adenocarcinoma cells.
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Affiliation(s)
- Kumi Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Akira Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan.
| | - Taishi Akimoto
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Kazufumi Magara
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Tomoyuki Aoyama
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Hiroshi Kitajima
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Taro Murakami
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Yusuke Ono
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Daisuke Kyuno
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Hiromu Suzuki
- Department of Molecular Biology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Makoto Osanai
- Department of Pathology, Sapporo Medical University School of Medicine, S1 W17, Chuo-ku, Sapporo, 060-8556, Japan
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18
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Matsuoka S, Suzuki H, Kato C, Kamikawa-Tokai M, Kamikawa A, Okamatsu-Ogura Y, Kimura K. Expression of Grainyhead-like 2 in the Process of Ductal Development of Mouse Mammary Gland. J Histochem Cytochem 2021; 69:373-388. [PMID: 33985378 PMCID: PMC8182637 DOI: 10.1369/00221554211013715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 04/12/2021] [Indexed: 11/22/2022] Open
Abstract
Grainyhead-like 2 (Grhl2) is a transcription factor regulating cell adhesion genes. Grhl2 acts as an epithelial-mesenchymal transition suppressor, and it is a proto-oncogene involved in estrogen-stimulated breast cancer proliferation. However, its expression during ovarian hormone-dependent mammary ductal development remains obscure. We here examined Grhl2 expression in the mammary gland of normal and steroid-replaced ovariectomized mice. Grhl2 protein signals were detected in both the mammary luminal epithelial and myoepithelial nuclei. The ratio and density of Grhl2-positive nuclei increased after the onset of puberty and progressed with age, whereas Grhl2-negative epithelial cells were detected in mature ducts. Claudin 3, claudin 4, claudin 7, and E-cadherin gene expression in the mammary gland was upregulated, and their expression was highly correlated with Grhl2 gene expression. Furthermore, Grhl2 mRNA expression and ductal lumen width were significantly increased by the combined treatment of estrogen and progesterone compared with estrogen alone. These results suggest that Grhl2 expressed in the luminal epithelial and myoepithelial cells from the early phase of ductal development, controlling the expression of cell adhesion molecules to establish functional ducts.
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Affiliation(s)
- Shinya Matsuoka
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Hiroyoshi Suzuki
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Chieko Kato
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Mai Kamikawa-Tokai
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Akihiro Kamikawa
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Yuko Okamatsu-Ogura
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Kazuhiro Kimura
- Department of Biomedical Sciences, Graduate
School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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19
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Taylor A, Warner M, Mendoza C, Memmott C, LeCheminant T, Bailey S, Christensen C, Keller J, Suli A, Mizrachi D. Chimeric Claudins: A New Tool to Study Tight Junction Structure and Function. Int J Mol Sci 2021; 22:ijms22094947. [PMID: 34066630 PMCID: PMC8124314 DOI: 10.3390/ijms22094947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/02/2021] [Accepted: 05/04/2021] [Indexed: 12/11/2022] Open
Abstract
The tight junction (TJ) is a structure composed of multiple proteins, both cytosolic and membranal, responsible for cell–cell adhesion in polarized endothelium and epithelium. The TJ is intimately connected to the cytoskeleton and plays a role in development and homeostasis. Among the TJ’s membrane proteins, claudins (CLDNs) are key to establishing blood–tissue barriers that protect organismal physiology. Recently, several crystal structures have been reported for detergent extracted recombinant CLDNs. These structural advances lack direct evidence to support quaternary structure of CLDNs. In this article, we have employed protein-engineering principles to create detergent-independent chimeric CLDNs, a combination of a 4-helix bundle soluble monomeric protein (PDB ID: 2jua) and the apical—50% of human CLDN1, the extracellular domain that is responsible for cell–cell adhesion. Maltose-binding protein-fused chimeric CLDNs (MBP-CCs) used in this study are soluble proteins that retain structural and functional aspects of native CLDNs. Here, we report the biophysical characterization of the structure and function of MBP-CCs. MBP-fused epithelial cadherin (MBP-eCAD) is used as a control and point of comparison of a well-characterized cell-adhesion molecule. Our synthetic strategy may benefit other families of 4-α-helix membrane proteins, including tetraspanins, connexins, pannexins, innexins, and more.
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20
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Yang A, Yang X, Wang J, Wang X, Wu H, Fan L, Li H, Li J. Effects of the Tight Junction Protein CLDN6 on Cell Migration and Invasion in High-Grade Meningioma. World Neurosurg 2021; 151:e208-e216. [PMID: 33862296 DOI: 10.1016/j.wneu.2021.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/04/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Meningioma is a common tumor of the central nervous system, and malignant meningioma is highly aggressive and frequently recurs after surgical resection. Claudin 6 (CLDN6) is involved in cell proliferation, migration, and invasion and plays a role in maintaining tight junctions between cells and obstructing the movement of cells to neighboring tissues. METHODS In the present study, we evaluated the effect of tight junction protein CLDN6 expression levels on meningioma invasiveness using silencing and overexpression constructs in both in vitro and in vivo models. The expression of CLDN6 at the mRNA and protein levels was measured using quantitative reverse transcription polymerase chain reaction and Western blot assays. RESULTS We found that CLDN6 was expressed at higher levels in normal meningeal tissue and cell samples. Next, vectors with silenced and overexpressed CLDN6 were successfully established, and the expression of CLDN6 mRNA and protein in the IOMM-Lee and CH157-MN cell lines was downregulated after transfection with siRNA-CLDN6 and upregulated by transfection of the entire CLDN6 sequence vector. An in vitro assay revealed that abrogation of CLDN6 expression added to the capacity for tumor migration and invasion relative to the overexpression of CLDN6. In addition to the in vitro evidence, we observed a significant increase in tumor growth and invasion-associated gene expression, including matrix metalloproteinase-2, matrix metalloproteinase-9, vimentin, and N-cadherin, after silencing CLDN6 expression in vivo. CONCLUSIONS CLDN6 might play an important role in meningioma migration and invasion and, thus, might serve as a novel diagnostic and/or prognostic biomarker and as a potential therapeutic target.
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Affiliation(s)
- Anqiang Yang
- Department of Neurosurgery, The First People's Hospital of Yibin, Yibin, China
| | - Xiaobin Yang
- Department of Neurosurgery, The First People's Hospital of Yibin, Yibin, China
| | - Jianqiu Wang
- Department of Radiology, The First People's Hospital of Yibin, Yibin, China
| | - Xiaojun Wang
- Department of Anesthesiology, The First People's Hospital of Yibin, Yibin, China
| | - Hegang Wu
- Department of Pathology, The First People's Hospital of Yibin, Yibin, China
| | - Li Fan
- Department of Neurosurgery, The First People's Hospital of Yibin, Yibin, China
| | - Hao Li
- Department of Neurology, The First People's Hospital of Yibin, Yibin, China
| | - Jiangtao Li
- Central Laboratory, The First People's Hospital of Yibin, Yibin, China.
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21
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Intramammary infection caused by Staphylococcus aureus increases IgA antibodies to iron-regulated surface determinant-A, -B, and -H in bovine milk. Vet Immunol Immunopathol 2021; 235:110235. [PMID: 33838543 DOI: 10.1016/j.vetimm.2021.110235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 03/24/2021] [Accepted: 03/28/2021] [Indexed: 12/15/2022]
Abstract
The aim of this study was to identify virulence factors that have high immunogenicity. An in vivo-expressed Staphylococcus aureus antigen was identified by probing bacteriophage expression libraries of S. aureus with antibodies in bovine mastitis milk. Eighteen clones were isolated, and their proteins were identified as 5 characterised proteins (IsdA, Protein A, IsdB, autolysin, and imidazole glycerol phosphate dehydratase) and 13 hypothetical proteins. We focused on IsdA, IsdB, and IsdH as virulence factors that have a high immunogenicity and are capable of inducing a specific humoral immune response in S. aureus-infected quarters. The optical density (OD) values of IsdA and IsdB IgA and IgG antibodies in milk affected by naturally occurring mastitis caused by S. aureus increased significantly compared to those in healthy milk. In the experimental infection study, the OD values of IsdA- and B-specific IgA and IgG antibodies were significantly increased from 2 to 4 weeks after S. aureus infection compared to day 0 (P < 0.05). On the other hand, we demonstrated that milk from natural and experimental intramammary infections caused by S. aureus are associated with significantly higher IgA levels against IsdH (P < 0.05), but no significant change in IgG levels. Our findings facilitated our understanding of the pathogenicity of S. aureus in bovine mastitis, as well as the mechanisms by which specific humoral immune responses to S. aureus infection are induced. In addition, the results obtained could provide insight into how bovine mastitis can be controlled, for example, through vaccination.
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22
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Ali I, Yang M, Wang Y, Yang C, Shafiq M, Wang G, Li L. Sodium propionate protect the blood-milk barrier integrity, relieve lipopolysaccharide-induced inflammatory injury and cells apoptosis. Life Sci 2021; 270:119138. [PMID: 33524422 DOI: 10.1016/j.lfs.2021.119138] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 01/02/2021] [Accepted: 01/17/2021] [Indexed: 12/12/2022]
Abstract
AIMS Sodium propionate (SP) has been reported to possess an anti-inflammatory and anti-apoptotic potential by inhibiting certain signaling pathways and helps in reducing the pathological damages of the mammary gland. However, the effects of sodium propionate on attenuating Lipopolysaccharide (LPS)-induced inflammatory condition and cell damage in bovine mammary epithelial cells (bMECs) are not comprehensively studied yet. Therefore, the aim of the current investigation was to evaluate the protective effects of sodium propionate on LPS-induced inflammatory conditions and to clarify the possible underlying molecular mechanism in bMECs. MAIN METHODS The effects of increasing doses of SP on LPS-induced inflammation, oxidative stress and apoptosis was studied in vitro. Furthermore, the underlying protective mechanisms of SP on LPS-stimulated bMECs was investigated under different experimental conditions. KEY FINDINGS The results reveled that increased inflammatory cytokines, chemokines and those of tight junction's mRNA expression was significantly attenuated dose-dependently by propionate. Biochemical analysis revealed that propionate pretreatment modulated the LPS-induced intercellular reactive oxygen species (ROS) accumulation, oxidative and antioxidant factors and apoptosis rate. Furthermore, we investigated that the LPS activated nuclear factor-kB (NF-kB), caspase/Bax apoptotic pathways and Histone deacetylases (HDAC) was significantly attenuated by propionate in bMECs. SIGNIFICANCE Our results suggest that sodium propionate is a potent agent for ameliorating LPS-mediated cellular disruption and limiting detrimental inflammatory responses, partly via maintaining blood milk barrier integrity, inhibiting HDAC activity and NF-kB signaling pathway.
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Affiliation(s)
- Ilyas Ali
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Min Yang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yiru Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Caixia Yang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Muhammad Shafiq
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China
| | - Genlin Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Lian Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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Kumar N, Tandon M, Chintamani CM, Saxena S. Immunoexpression of claudin-4 and correlation with estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2-neu in breast cancer. J Cancer Res Ther 2021; 18:1766-1770. [DOI: 10.4103/jcrt.jcrt_1909_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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24
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Strauss RE, Gourdie RG. Cx43 and the Actin Cytoskeleton: Novel Roles and Implications for Cell-Cell Junction-Based Barrier Function Regulation. Biomolecules 2020; 10:E1656. [PMID: 33321985 PMCID: PMC7764618 DOI: 10.3390/biom10121656] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022] Open
Abstract
Barrier function is a vital homeostatic mechanism employed by epithelial and endothelial tissue. Diseases across a wide range of tissue types involve dynamic changes in transcellular junctional complexes and the actin cytoskeleton in the regulation of substance exchange across tissue compartments. In this review, we focus on the contribution of the gap junction protein, Cx43, to the biophysical and biochemical regulation of barrier function. First, we introduce the structure and canonical channel-dependent functions of Cx43. Second, we define barrier function and examine the key molecular structures fundamental to its regulation. Third, we survey the literature on the channel-dependent roles of connexins in barrier function, with an emphasis on the role of Cx43 and the actin cytoskeleton. Lastly, we discuss findings on the channel-independent roles of Cx43 in its associations with the actin cytoskeleton and focal adhesion structures highlighted by PI3K signaling, in the potential modulation of cellular barriers. Mounting evidence of crosstalk between connexins, the cytoskeleton, focal adhesion complexes, and junctional structures has led to a growing appreciation of how barrier-modulating mechanisms may work together to effect solute and cellular flux across tissue boundaries. This new understanding could translate into improved therapeutic outcomes in the treatment of barrier-associated diseases.
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Affiliation(s)
- Randy E. Strauss
- Virginia Tech, Translational Biology Medicine and Health (TBMH) Program, Roanoke, VA 24016, USA
| | - Robert G. Gourdie
- Center for Heart and Reparative Medicine Research, Fralin Biomedical Research Institute at Virginia Tech Carilion, Roanoke, VA 24016, USA
- Virginia Tech Carilion School of Medicine, Roanoke, VA 24016, USA
- Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060, USA
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25
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Jotatsu T, Izumi H, Morimoto Y, Yatera K. Selection of microRNAs in extracellular vesicles for diagnosis of malignant pleural mesothelioma by in vitro analysis. Oncol Rep 2020; 44:2198-2210. [PMID: 33000251 PMCID: PMC7551269 DOI: 10.3892/or.2020.7778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 09/04/2020] [Indexed: 12/12/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is a malignant tumor which is a challenge for diagnosis and is associated with a poor patient prognosis. Thus, early diagnostic interventions will improve the quality of life and life expectancy of these patients. Recently, cellular microRNAs (miRNAs) have been found to be involved in maintaining homeostasis, and abnormal miRNA expression has often been observed in various diseases including cancer. Extracellular vesicles (EVs) released by many cells contain proteins and nucleic acids. miRNAs are secreted from all cells via EVs and circulate throughout the body. In this study, culture media were passed sequentially through membrane filters 220–50 nm in size, and EVs with diameters of 50 to 220 nm (EVcap50/220) were collected. miRNAs (EV50-miRNAs) in EVcap50/220 were purified, and microarray analysis was performed. EV50-miRNA expression profiles were compared between MPM cells and a normal pleural mesothelial cell line, and six EV50-miRNAs were selected for further investigation. Of these, hsa-miR-193a-5p and hsa-miR-551b-5p demonstrated higher expression in MPM-derived EVcap50/220. These miRNAs reduced the expression of several genes involved in cell-cell interactions and cell-matrix interactions in normal pleural mesothelial cells. Our data suggest that hsa-miR-193a-5p and hsa-miR-551b-5p in EVcap50/220 could be diagnostic markers for MPM.
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Affiliation(s)
- Takanobu Jotatsu
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka 807‑8555, Japan
| | - Hiroto Izumi
- Department of Occupational Pneumology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka 807‑8555, Japan
| | - Yasuo Morimoto
- Department of Occupational Pneumology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Fukuoka 807‑8555, Japan
| | - Kazuhiro Yatera
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka 807‑8555, Japan
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26
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Bhat AA, Syed N, Therachiyil L, Nisar S, Hashem S, Macha MA, Yadav SK, Krishnankutty R, Muralitharan S, Al-Naemi H, Bagga P, Reddy R, Dhawan P, Akobeng A, Uddin S, Frenneaux MP, El-Rifai W, Haris M. Claudin-1, A Double-Edged Sword in Cancer. Int J Mol Sci 2020; 21:ijms21020569. [PMID: 31952355 PMCID: PMC7013445 DOI: 10.3390/ijms21020569] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/12/2020] [Accepted: 01/13/2020] [Indexed: 12/11/2022] Open
Abstract
Claudins, a group of membrane proteins involved in the formation of tight junctions, are mainly found in endothelial or epithelial cells. These proteins have attracted much attention in recent years and have been implicated and studied in a multitude of diseases. Claudins not only regulate paracellular transepithelial/transendothelial transport but are also critical for cell growth and differentiation. Not only tissue-specific but the differential expression in malignant tumors is also the focus of claudin-related research. In addition to up- or down-regulation, claudin proteins also undergo delocalization, which plays a vital role in tumor invasion and aggressiveness. Claudin (CLDN)-1 is the most-studied claudin in cancers and to date, its role as either a tumor promoter or suppressor (or both) is not established. In some cancers, lower expression of CLDN-1 is shown to be associated with cancer progression and invasion, while in others, loss of CLDN-1 improves the patient survival. Another topic of discussion regarding the significance of CLDN-1 is its localization (nuclear or cytoplasmic vs perijunctional) in diseased states. This article reviews the evidence regarding CLDN-1 in cancers either as a tumor promoter or suppressor from the literature and we also review the literature regarding the pattern of CLDN-1 distribution in different cancers, focusing on whether this localization is associated with tumor aggressiveness. Furthermore, we utilized expression data from The Cancer Genome Atlas (TCGA) to investigate the association between CLDN-1 expression and overall survival (OS) in different cancer types. We also used TCGA data to compare CLDN-1 expression in normal and tumor tissues. Additionally, a pathway interaction analysis was performed to investigate the interaction of CLDN-1 with other proteins and as a future therapeutic target.
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Affiliation(s)
- Ajaz A. Bhat
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha 26999, Qatar; (A.A.B.); (N.S.); (S.N.); (S.H.); (S.K.Y.)
| | - Najeeb Syed
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha 26999, Qatar; (A.A.B.); (N.S.); (S.N.); (S.H.); (S.K.Y.)
| | - Lubna Therachiyil
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (L.T.); (R.K.); (S.U.)
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha 2713, Qatar
| | - Sabah Nisar
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha 26999, Qatar; (A.A.B.); (N.S.); (S.N.); (S.H.); (S.K.Y.)
| | - Sheema Hashem
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha 26999, Qatar; (A.A.B.); (N.S.); (S.N.); (S.H.); (S.K.Y.)
| | - Muzafar A. Macha
- Department of Biotechnology, Central University of Kashmir, Ganderbal, Jammu and Kashmir 191201, India;
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Santosh K. Yadav
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha 26999, Qatar; (A.A.B.); (N.S.); (S.N.); (S.H.); (S.K.Y.)
| | - Roopesh Krishnankutty
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (L.T.); (R.K.); (S.U.)
| | | | - Hamda Al-Naemi
- Laboratory Animal Research Center, Qatar University, Doha 2713, Qatar; (S.M.); (H.A.-N.)
| | - Puneet Bagga
- Center for Magnetic Resonance and Optical Imaging, Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA; (P.B.); (R.R.)
| | - Ravinder Reddy
- Center for Magnetic Resonance and Optical Imaging, Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA; (P.B.); (R.R.)
| | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA;
| | - Anthony Akobeng
- Department of Pediatric Gastroenterology, Sidra Medicine, Doha 26999, Qatar;
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; (L.T.); (R.K.); (S.U.)
| | | | - Wael El-Rifai
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136, USA;
| | - Mohammad Haris
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha 26999, Qatar; (A.A.B.); (N.S.); (S.N.); (S.H.); (S.K.Y.)
- Laboratory Animal Research Center, Qatar University, Doha 2713, Qatar; (S.M.); (H.A.-N.)
- Correspondence: ; Tel.: +974-4003-7407
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27
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Claudin-7b and Claudin-h are required for controlling cilia morphogenesis in the zebrafish kidney. Mech Dev 2019; 161:103595. [PMID: 31887432 DOI: 10.1016/j.mod.2019.103595] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/08/2019] [Accepted: 12/23/2019] [Indexed: 11/22/2022]
Abstract
Claudins are a family of proteins which are the most important components of the tight junctions. The location of Claudins on the renal tubule epithelial determines its paracellular transport characteristics, but whether Claudins have other functions in kidneys remains still unclear. Here, we showed that the transcripts encoding two Claudin family proteins, claudin-7b (cldn-7b) and claudin-h (cldn-h), were expressed in the transporting cells in the zebrafish pronephros. By knocking down of cldn-7b and cldn-h in zebrafish, we showed that these claudins morphants exhibited cystic kidneys accompanied with body curvature. Further analysis showed that down regulation of cldn-7b or cldn-h led to multiple defects in apico-basolateral polarity, cilia morphology and ciliary function in kidney. Moreover, the ciliary defect was confirmed by depletion of Cldn-7b or Cldn-h using CRISPR/Cas9 system. We also showed that both cldn-7b and cldn-h were genetically interacted with a well-known ciliary gene, arl13b. Deletion of arl13b led to curly cilia in the pronephros that phenocopied with cldn-7b and cldn-h morphants. Taken together, our data suggested that the tight junction protein, Cldn-7b and Cldn-h, regulate kidney development and function by affecting cilia morphology.
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Goldhammer N, Kim J, Timmermans-Wielenga V, Petersen OW. Characterization of organoid cultured human breast cancer. Breast Cancer Res 2019; 21:141. [PMID: 31829259 PMCID: PMC6907265 DOI: 10.1186/s13058-019-1233-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 11/19/2019] [Indexed: 12/26/2022] Open
Abstract
Organoid cultures are increasingly used to model human cancers experimentally with a view to tailoring personalized medicine and predicting drug responses. Breast cancer is no exception, but in particular, primary breast cancer poses some inherent difficulties due to the frequent presence of residual non-malignant cells in the biopsies. We originally developed an assay for the distinction between malignant and non-malignant structures in primary breast cancer organoid cultures (Petersen et al., Proc Natl Acad Sci (USA) 89(19):9064–8, 1992). Here, we apply this assay to assess the frequency of normal-like organoids in primary breast carcinoma cultures and the cellular composition as a consequence of passaging. We find that in consecutively collected samples of primary human breast cancers, residual non-malignant tissues were observed histologically in five out of ten biopsies. Based on relevant morphogenesis and correct polarization as recorded by expression in luminal epithelial cells of mucin 1 (Muc1), occludin, and keratin 19 (K19) and expression in basal cells of integrin β4, p63, and K14, non-malignant organoids were present in all primary human breast cancer-derived cultures. Furthermore, passaging in a contemporary culture medium was in favor of the selective expansion of basal-like cells. We conclude that organoid cultures of human breast cancers are most representative of the tissue origin in primary culture.
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Affiliation(s)
- Nadine Goldhammer
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen N, Denmark.,Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen N, Denmark
| | - Jiyoung Kim
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen N, Denmark.,Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen N, Denmark
| | - Vera Timmermans-Wielenga
- Pathology Department, Centre of Diagnostic Investigations, Rigshospitalet, DK-2100, Copenhagen Ø, Denmark
| | - Ole William Petersen
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen N, Denmark. .,Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Faculty of Health and Medical Sciences, University of Copenhagen, DK-2200, Copenhagen N, Denmark.
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29
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MiR-205 Dysregulations in Breast Cancer: The Complexity and Opportunities. Noncoding RNA 2019; 5:ncrna5040053. [PMID: 31752366 PMCID: PMC6958506 DOI: 10.3390/ncrna5040053] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 02/07/2023] Open
Abstract
MicroRNAs (miRNAs) are endogenous non-coding small RNAs that downregulate target gene expression by imperfect base-pairing with the 3' untranslated regions (3'UTRs) of target gene mRNAs. MiRNAs play important roles in regulating cancer cell proliferation, stemness maintenance, tumorigenesis, cancer metastasis, and cancer therapeutic resistance. While studies have shown that dysregulation of miRNA-205-5p (miR-205) expression is controversial in different types of human cancers, it is generally observed that miR-205-5p expression level is downregulated in breast cancer and that miR-205-5p exhibits a tumor suppressive function in breast cancer. This review focuses on the role of miR-205-5p dysregulation in different subtypes of breast cancer, with discussions on the effects of miR-205-5p on breast cancer cell proliferation, epithelial-mesenchymal transition (EMT), metastasis, stemness and therapy-resistance, as well as genetic and epigenetic mechanisms that regulate miR-205-5p expression in breast cancer. In addition, the potential diagnostic and therapeutic value of miR-205-5p in breast cancer is also discussed. A comprehensive list of validated miR-205-5p direct targets is presented. It is concluded that miR-205-5p is an important tumor suppressive miRNA capable of inhibiting the growth and metastasis of human breast cancer, especially triple negative breast cancer. MiR-205-5p might be both a potential diagnostic biomarker and a therapeutic target for metastatic breast cancer.
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30
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Lan H, Hosomi K, Kunisawa J. Clostridium perfringens enterotoxin-based protein engineering for the vaccine design and delivery system. Vaccine 2019; 37:6232-6239. [PMID: 31466706 DOI: 10.1016/j.vaccine.2019.08.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 08/02/2019] [Indexed: 02/07/2023]
Abstract
Clostridium perfringens is a major cause of food poisoning worldwide, with its enterotoxin (CPE) being the major virulence factor. The C-terminus of CPE (C-CPE) is non-toxic and is the part of the toxin that binds to epithelial cells via the claudins in tight junctions; however, C-CPE has low antigenicity. To address this issue, we have used protein engineering technology to augment the antigenicity of C-CPE and have developed a C-CPE-based vaccine against C. perfringens-mediated food poisoning. Moreover, C-CPE has properties that make it potentially useful for the development of vaccines against other bacterial toxins that cause food poisoning. For example, we hypothesized that the ability of C-CPE to bind to claudins could be harnessed to deliver vaccine antigens directly to mucosa-associated lymphoid tissues, and we successfully developed a nasally administered C-CPE-based vaccine delivery system that promotes antigen-specific mucosal and systemic immune responses. In addition, our group has revealed the roles that the nasal mucus plays in lowering the efficacy of C-CPE-based nasal vaccines. Here, we review recent advances in the development of C-CPE-based vaccines against the major bacterial toxins that cause food poisoning and discuss our C-CPE-based nasal vaccine delivery system.
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Affiliation(s)
- Huangwenxian Lan
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan.
| | - Koji Hosomi
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan.
| | - Jun Kunisawa
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, Japan; Division of Mucosal Immunology, Department of Microbiology and Immunology and International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Kobe University Graduate School of Medicine, Hyogo, Japan; Graduate School of Medicine and Graduate School of Dentistry, Osaka University, Osaka, Japan.
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31
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Tamhankar M, Patterson JL. Directional entry and release of Zika virus from polarized epithelial cells. Virol J 2019; 16:99. [PMID: 31395061 PMCID: PMC6688342 DOI: 10.1186/s12985-019-1200-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 07/18/2019] [Indexed: 03/09/2023] Open
Abstract
Background Both vector borne and sexual transmission of Zika virus (ZIKV) involve infection of epithelial cells in the initial stages of infection. Epithelial cells are unique in their ability to form polarized monolayers and their barrier function. Cell polarity induces an asymmetry in the epithelial monolayer, which is maintained by tight junctions and specialized sorting machinery. This differential localization can have a potential impact of virus infection. Asymmetrical distribution of a viral receptor can restrict virus entry to a particular membrane while polarized sorting can lead to a directional release of virions. The present study examined the impact of cell polarity on ZIKV infection and release. Methods A polarized Caco-2 cell model we described previously was used to assess ZIKV infection. Transepithelial resistance (TEER) was used to assess epithelial cell polarity, and virus infection was measured by immunofluorescence microscopy and qRT-PCR. Cell permeability was measured using a fluorescein leakage assay. Statistical significance was calculated using one-way ANOVA and significance was set at p < 0.05. Results Using the Caco-2 cell model for polarized epithelial cells, we report that Zika virus preferentially infects polarized cells from the apical route and is released vectorially through the basolateral route. Our data also indicates that release occurs without disruption of cell permeability. Conclusions Our results show that ZIKV has directional infection and egress in a polarized cell system. This mechanism of directional infection may be one of the mechanisms that enables the cross the epithelial barrier effectively without a disruption in cell monolayer integrity. Elucidation of entry and release characteristics of Zika virus in polarized epithelial cells can lead to better understanding of virus dissemination in the host, and can help in developing effective therapeutic interventions. Electronic supplementary material The online version of this article (10.1186/s12985-019-1200-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Manasi Tamhankar
- Department of Microbiology, Immunology and Molecular Genetics, University of Texas Health San Antonio, San Antonio, TX, USA.,Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Jean L Patterson
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, TX, USA.
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32
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Li F, Pascal LE, Stolz DB, Wang K, Zhou Y, Chen W, Xu Y, Chen Y, Dhir R, Parwani AV, Nelson JB, DeFranco DB, Yoshimura N, Balasubramani GK, Gingrich JR, Maranchie JK, Jacobs BL, Davies BJ, Hrebinko RL, Bigley JD, McBride D, Guo P, He D, Wang Z. E-cadherin is downregulated in benign prostatic hyperplasia and required for tight junction formation and permeability barrier in the prostatic epithelial cell monolayer. Prostate 2019; 79:1226-1237. [PMID: 31212363 PMCID: PMC6599563 DOI: 10.1002/pros.23806] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/18/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND We previously reported the presence of prostate-specific antigen (PSA) in the stromal compartment of benign prostatic hyperplasia (BPH). Since PSA is expressed exclusively by prostatic luminal epithelial cells, PSA in the BPH stroma suggests increased tissue permeability and the compromise of epithelial barrier integrity. E-cadherin, an important adherens junction component and tight junction regulator, is known to exhibit downregulation in BPH. These observations suggest that the prostate epithelial barrier is disrupted in BPH and E-cadherin downregulation may increase epithelial barrier permeability. METHODS The ultra-structure of cellular junctions in BPH specimens was observed using transmission electron microscopy (TEM) and E-cadherin immunostaining analysis was performed on BPH and normal adjacent specimens from BPH patients. In vitro cell line studies using benign prostatic epithelial cell lines were performed to determine the impact of small interfering RNA knockdown of E-cadherin on transepithelial electrical resistance and diffusion of fluorescein isothiocyanate (FITC)-dextran in transwell assays. RESULTS The number of kiss points in tight junctions was reduced in BPH epithelial cells as compared with the normal adjacent prostate. Immunostaining confirmed E-cadherin downregulation and revealed a discontinuous E-cadherin staining pattern in BPH specimens. E-cadherin knockdown increased monolayer permeability and disrupted tight junction formation without affecting cell density. CONCLUSIONS Our results indicate that tight junctions are compromised in BPH and loss of E-cadherin is potentially an important underlying mechanism, suggesting targeting E-cadherin loss could be a potential approach to prevent or treat BPH.
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Affiliation(s)
- Feng Li
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Department of Urology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Laura E Pascal
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Donna B Stolz
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Ke Wang
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yibin Zhou
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Wei Chen
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yadong Xu
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Urology, The Second Affiliated Hospital of Centre West University, Changsha, Hunan, China
| | - Yule Chen
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Rajiv Dhir
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Anil V Parwani
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Joel B Nelson
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Donald B DeFranco
- Pittsburgh Institute for Neurodegenerative Diseases, Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Goundappa K Balasubramani
- Department of Epidemiology, Epidemiology Data Center, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jeffrey R Gingrich
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jodi K Maranchie
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Bruce L Jacobs
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Benjamin J Davies
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Ronald L Hrebinko
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Joel D Bigley
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Dawn McBride
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Peng Guo
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Dalin He
- Department of Urology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhou Wang
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- UPMC Hillman Cancer Center, UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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33
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Zeisel MB, Dhawan P, Baumert TF. Tight junction proteins in gastrointestinal and liver disease. Gut 2019; 68:547-561. [PMID: 30297438 PMCID: PMC6453741 DOI: 10.1136/gutjnl-2018-316906] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 08/16/2018] [Accepted: 08/19/2018] [Indexed: 12/11/2022]
Abstract
Over the past two decades a growing body of evidence has demonstrated an important role of tight junction (TJ) proteins in the physiology and disease biology of GI and liver disease. On one side, TJ proteins exert their functional role as integral proteins of TJs in forming barriers in the gut and the liver. Furthermore, TJ proteins can also be expressed outside TJs where they play important functional roles in signalling, trafficking and regulation of gene expression. A hallmark of TJ proteins in disease biology is their functional role in epithelial-to-mesenchymal transition. A causative role of TJ proteins has been established in the pathogenesis of colorectal cancer and gastric cancer. Among the best characterised roles of TJ proteins in liver disease biology is their function as cell entry receptors for HCV-one of the most common causes of hepatocellular carcinoma. At the same time TJ proteins are emerging as targets for novel therapeutic approaches for GI and liver disease. Here we review our current knowledge of the role of TJ proteins in the pathogenesis of GI and liver disease biology and discuss their potential as therapeutic targets.
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Affiliation(s)
- Mirjam B. Zeisel
- Inserm U1052, CNRS UMR 5286, Cancer Research Center of Lyon (CRCL), Université de Lyon (UCBL), Lyon, France
- Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
- Université de Strasbourg, Strasbourg, France
| | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE
- Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE
- VA Nebraska-Western Iowa Health Care System, Omaha, NE
| | - Thomas F. Baumert
- Inserm, U1110, Institut de Recherche sur les Maladies Virales et Hépatiques, Strasbourg, France
- Université de Strasbourg, Strasbourg, France
- Institut Hospitalo-Universitaire, Pôle hépato-digestif, Nouvel Hôpital Civil, Strasbourg, France
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Claudin 1 Is Highly Upregulated by PKC in MCF7 Human Breast Cancer Cells and Correlates Positively with PKCε in Patient Biopsies. Transl Oncol 2019; 12:561-575. [PMID: 30658316 PMCID: PMC6349319 DOI: 10.1016/j.tranon.2018.12.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/20/2018] [Accepted: 12/23/2018] [Indexed: 01/04/2023] Open
Abstract
Recent studies provide compelling evidence to suggest that the tight junction protein claudin 1, aberrantly expressed in several cancer types, plays an important role in cancer progression. Dysregulation of claudin 1 has been shown to induce epithelial mesenchymal transition (EMT). Furthermore, activation of the ERK signaling pathway by protein kinase C (PKC) was shown to be necessary for EMT induction. Whether PKC is involved in regulating breast cancer progression has not been addressed. The PKC activator 12-O-tetradecanoylphorbol 13-acetate (TPA) was used to investigate the effect of PKC activity on claudin 1 transcription and protein levels, subcellular distribution, and alterations in EMT markers in human breast cancer (HBC) cell lines. As well, tissue microarray analysis (TMA) of a large cohort of invasive HBC biopsies was conducted to investigate correlations between claudin 1 and PKC isomers. TPA upregulated claudin 1 levels in all HBC cell lines analyzed. In particular, a high induction of claudin 1 protein was observed in the MCF7 cell line. TPA treatment also led to an accumulation of claudin 1 in the cytoplasm. Additionally, we demonstrated that the upregulation of claudin 1 was through the ERK signaling pathway. In patient biopsies, we identified a significant positive correlation between claudin 1, PKCα, and PKCε in ER+ tumors. A similar correlation between claudin 1 and PKCε was identified in ER- tumors, and high PKCε was associated with shorter disease-free survival. Collectively, these studies demonstrate that claudin 1 and the ERK signaling pathway are important players in HBC progression.
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Pegolo S, Bergamaschi M, Gasperi F, Biasioli F, Cecchinato A, Bittante G. Integrated PTR-ToF-MS, GWAS and biological pathway analyses reveal the contribution of cow's genome to cheese volatilome. Sci Rep 2018; 8:17002. [PMID: 30451907 PMCID: PMC6242841 DOI: 10.1038/s41598-018-35323-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 11/01/2018] [Indexed: 11/21/2022] Open
Abstract
Volatile organic compounds (VOCs) are small molecules that contribute to the distinctive flavour of cheese which is an important attribute for consumer acceptability. To investigate whether cow's genetic background might contribute to cheese volatilome, we carried out genome-wide association studies (GWAS) and pathway-based analyses for 173 spectrometric peaks tentatively associated with several VOCs obtained from proton-transfer-reaction mass spectrometry (PTR-ToF-MS) analyses of 1,075 model cheeses produced using raw whole-milk from Brown Swiss cows. Overall, we detected 186 SNPs associated with 120 traits, several of which mapped close to genes involved in protein (e.g. CSN3, GNRHR and FAM169A), fat (e.g. AGPAT3, SCD5, and GPAM) and carbohydrate (e.g. B3GNT2, B4GALT1, and PHKB) metabolism. Gene set enrichment analysis showed that pathways connected with proteolysis/amino acid metabolism (purine and nitrogen metabolism) as well as fat metabolism (long-term potentiation) and mammary gland function (tight junction) were overrepresented. Our results provide the first evidence of a putative link between cow's genes and cheese flavour and offer new insights into the role of potential candidate loci and the biological functions contributing to the cheese volatilome.
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Affiliation(s)
- Sara Pegolo
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020, Legnaro, Padua, Italy.
| | - Matteo Bergamaschi
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020, Legnaro, Padua, Italy
| | - Flavia Gasperi
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010, San Michele all'Adige, TN, Italy
| | - Franco Biasioli
- Department of Food Quality and Nutrition, Research and Innovation Centre, Fondazione Edmund Mach (FEM), Via E. Mach 1, 38010, San Michele all'Adige, TN, Italy
| | - Alessio Cecchinato
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020, Legnaro, Padua, Italy
| | - Giovanni Bittante
- Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Viale dell'Università 16, 35020, Legnaro, Padua, Italy
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Opening the Blood-Brain Barrier and Improving the Efficacy of Temozolomide Treatments of Glioblastoma Using Pulsed, Focused Ultrasound with a Microbubble Contrast Agent. BIOMED RESEARCH INTERNATIONAL 2018; 2018:6501508. [PMID: 30534564 PMCID: PMC6252217 DOI: 10.1155/2018/6501508] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/22/2018] [Accepted: 10/30/2018] [Indexed: 11/17/2022]
Abstract
Objective To explore the effects of pulsed, focused, and microbubble contrast agent-enhanced ultrasonography (mCEUS) on blood-brain barrier (BBB) permeability and the efficacy temozolomide for glioblastoma. Methods Wistar rats (n = 30) were divided into three groups (n = 10 per group) to determine optimal CUES conditions for achieving BBB permeability, as assessed by ultrastructure transmission electron microscopy (TEM) and western blot assays for the tight junction protein claudin-5. Optimized mCEUS effects on BBB permeability were subsequently confirmed with Evans blue staining (2 groups of 10 rats). The glioma cell line 9L was injected into the brain striatum of Wistar rats. After temozolomide chemotherapy, we detected glial fibrillary acidic protein (GFAP) levels in serum by enzyme-linked immunosorbent assay (ELISA) and in brain tissue by western blot, immunocytochemistry, and real-time quantitative polymerase chain reaction (qPCR). Results BBB permeability was maximized with 1 ml/kg contrast agent mCEUS delivered via 10-min intermittent launches with a 400-ms interval. Evans blue staining confirmed BBB permeability following ultrasonic cavitation in the control group (P < 0.05). Following temozolomide chemotherapy, levels of the tumor marker GFAP were increased in the group with ultrasonic cavitation compared with the control group (P < 0.05). Conclusions When rats were treated by mCEUS with intermittent launches (interval, 400 ms) and injected with 1 mg/kg contrast agent, BBB permeability was increased and temozolomide BBB penetration was enhanced, therapeutic enhancement for glioblastoma.
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Nakadate K, Hirakawa T, Tanaka-Nakadate S. Small intestine barrier function failure induces systemic inflammation in monosodium glutamate-induced chronically obese mice. Appl Physiol Nutr Metab 2018; 44:587-594. [PMID: 30345803 DOI: 10.1139/apnm-2018-0560] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Chronic obesity has increased worldwide, in conjunction with type 2 diabetes. Chronic obesity causes systemic inflammation that may result in functional deterioration of the gastrointestinal barrier. However, gastrointestinal conditions associated with chronic obesity have not been comprehensively investigated. The purpose of this study was to evaluate morphological changes in small intestine barrier structures during chronic obesity. A mouse model of chronic obesity induced by monosodium glutamate treatment was established. At postnatal week 15, pathological changes including in small intestinal epithelial cells were analyzed in chronically obese mice compared with controls. Numerous gaps were identified between small intestinal epithelial cells in chronically obese mice, and levels of both desmosomal and tight junction proteins were significantly lower in their small intestinal epithelial cells. Moreover, in chronically obese mice, a significant increase in the number of intestinal inflammatory cells, particularly macrophages, was observed; in addition, blood samples from the mouse model show an increase in markers of inflammation, tumor necrosis factor-alpha and interleukin-1-beta. These findings suggest that functional deterioration of adhesion structures between small intestinal epithelial cells causes gastrointestinal barrier function failure, leading to a rise in intestinal permeability to blood vessels and consequent systemic inflammation, characterized by macrophage infiltration.
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Affiliation(s)
- Kazuhiko Nakadate
- a Department of Basic Science, Educational and Research Center for Pharmacy, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Tomoya Hirakawa
- a Department of Basic Science, Educational and Research Center for Pharmacy, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan
| | - Sawako Tanaka-Nakadate
- b Department of Pharmacology and Toxicology, Dokkyo Medical University School of Medicine, 880, Kitakobayashi, Mibu, Shimotsuga, Tochigi 321-0293, Japan
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Pan T, Hu X, Liu T, Xu Z, Wan N, Zhang Y, Li S. MiR-128-1-5p regulates tight junction induced by selenium deficiency via targeting cell adhesion molecule 1 in broilers vein endothelial cells. J Cell Physiol 2018; 233:8802-8814. [PMID: 29904913 DOI: 10.1002/jcp.26794] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 04/30/2018] [Indexed: 01/05/2023]
Abstract
Vein endothelial cells (VECs) constitute an important barrier for macromolecules and circulating cells from the blood to the tissues, stabilizing the colloid osmotic pressure of the blood, regulating the vascular tone, and rapidly changing the intercellular connection, and maintaining normal physiological function. Tight junction has been discovered as an important structural basis of intercellular connection and may play a key role in intercellular connection injuries or vascular diseases and selenium (Se) deficiency symptoms. Hence, we replicated the Se-deficient broilers model and detected the specific microRNA in response to Se-deficient vein by using quantitative real time-PCR (qRT-PCR) analysis. Also, we selected miR-128-1-5p based on differential expression in vein tissue and confirmed its target gene cell adhesion molecule 1 (CADM1) by the dual luciferase reporter assay and qRT-PCR in VECs. We made the ectopic miR-128-1-5p expression for the purpose of validating its function on tight junction. The result showed that miR-128-1-5p and CADM1 were involved in the ZO-1-mediated tight junction, increased paracellular permeability, and arrested cell cycle. We presumed that miR-128-1-5p and Se deficiency might trigger tight junction. Interestingly, miR-128-1-5p inhibitor and fasudil in part hinder the destruction of the intercellular structure caused by Se deficiency. The miR-128-1-5p/CADM1/tight junction axis provides a new avenue toward understanding the mechanism of Se deficiency, revealing a novel regulation model of tight junction injury in vascular diseases.
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Affiliation(s)
- Tingru Pan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xueyuan Hu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Tianqi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Zhe Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Na Wan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yiming Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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Tao S, Orellana R, Weng X, Marins T, Dahl G, Bernard J. Symposium review: The influences of heat stress on bovine mammary gland function. J Dairy Sci 2018; 101:5642-5654. [DOI: 10.3168/jds.2017-13727] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 11/25/2017] [Indexed: 12/15/2022]
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Itoh M, Nakadate K, Matsusaka T, Hunziker W, Sugimoto H. Effects of the differential expression of ZO-1 and ZO-2 on podocyte structure and function. Genes Cells 2018; 23:546-556. [DOI: 10.1111/gtc.12598] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 04/27/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Masahiko Itoh
- Department of Biochemistry; School of Medicine; Dokkyo Medical University; Mibu-machi Japan
| | - Kazuhiko Nakadate
- Department of Basic Biology, Educational and Research Center for Pharmacy; Meiji Pharmaceutical University; Tokyo Japan
| | - Taiji Matsusaka
- Department of Molecular Life Sciences; Tokai University School of Medicine; Isehara Japan
| | - Walter Hunziker
- Epithelial Cell Biology Laboratory; Institute of Molecular and Cell Biology (IMCB); Singapore Singapore
| | - Hiroyuki Sugimoto
- Department of Biochemistry; School of Medicine; Dokkyo Medical University; Mibu-machi Japan
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Weng X, Monteiro APA, Guo J, Li C, Orellana RM, Marins TN, Bernard JK, Tomlinson DJ, DeFrain JM, Wohlgemuth SE, Tao S. Effects of heat stress and dietary zinc source on performance and mammary epithelial integrity of lactating dairy cows. J Dairy Sci 2017; 101:2617-2630. [PMID: 29290442 DOI: 10.3168/jds.2017-13484] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 11/09/2017] [Indexed: 12/17/2022]
Abstract
Dietary Zn and heat stress alter gut integrity in monogastric animals. However, effects of Zn on mammary epithelial integrity in heat-stressed lactating dairy cows have not been studied. Multiparous lactating Holstein cows (n = 72) were randomly assigned to 1 of 4 treatments with a 2 × 2 factorial arrangement to study the effects of environment and Zn source on performance and mammary epithelial integrity. Treatments included 2 environments [cooled (CL) or not cooled (NC)] and 2 Zn sources [75 mg/kg of supplemental Zn as Zn hydroxychloride (IOZ) or 35 mg/kg of Zn hydroxychloride + 40 mg/kg of Zn-Met complex (ZMC)]. The experiment was divided into baseline and environmental challenge phases of 84 d each. All cows were cooled during the baseline phase (temperature-humidity index = 72.5), whereas NC cows were not cooled during environmental challenge (temperature-humidity index = 77.7). Mammary biopsies were collected on d 7 and 56 relative to the onset of environmental challenge to analyze gene expression of claudin 1, 4, and 8, zonula occludens 1, 2, and 3, occludin, and E-cadherin and protein expression of occludin and E-cadherin. Deprivation of cooling increased respiration rate (64.8 vs. 73.9 breaths/min) and vaginal temperature (39.03 vs. 39.94°C) and decreased dry matter intake (26.7 vs. 21.6 kg/d). Energy-corrected milk yield decreased for NC cows relative to CL cows (24.5 vs. 34.1 kg/d). An interaction between environment and Zn source occurred for milk fat content as CL cows fed ZMC had lower milk fat percentage than other groups. Relative to CL cows, NC cows had lower concentrations of lactose (4.69 vs. 4.56%) and solids-not-fat (8.46 vs. 8.32%) but a higher concentration of milk urea nitrogen (9.07 vs. 11.02 mg/mL). Compared with IOZ, cows fed ZMC had lower plasma lactose concentration during baseline and tended to have lower plasma lactose concentration during environmental challenge. Plasma lactose concentration tended to increase at 3, 5, and 41 d after the onset of environmental challenge in NC cows relative to CL cows. Treatment had no effect on milk BSA concentration. Cows fed ZMC tended to have higher gene expression of E-cadherin relative to IOZ. Compared with CL, NC cows had increased gene expression of occludin and E-cadherin and tended to have increased claudin 1 and zonula occludens 1 and 2 gene expression in the mammary gland. Protein expression of occludin and E-cadherin was unchanged. In conclusion, removing active cooling impairs lactation performance and affects gene expression of proteins involved in the mammary epithelial barrier, and feeding a portion of dietary zinc as ZMC improves the integrity of the mammary epithelium.
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Affiliation(s)
- X Weng
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793
| | - A P A Monteiro
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793
| | - J Guo
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793
| | - C Li
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - R M Orellana
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793
| | - T N Marins
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793
| | - J K Bernard
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793
| | | | | | - S E Wohlgemuth
- Department of Animal Sciences, University of Florida, Gainesville 32611
| | - S Tao
- Department of Animal and Dairy Science, University of Georgia, Tifton 31793.
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Mießler KS, Markov AG, Amasheh S. Hydrostatic pressure incubation affects barrier properties of mammary epithelial cell monolayers, in vitro. Biochem Biophys Res Commun 2017; 495:1089-1093. [PMID: 29162451 DOI: 10.1016/j.bbrc.2017.11.110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 11/17/2017] [Indexed: 12/22/2022]
Abstract
During lactation, accumulation of milk in mammary glands (MG) causes hydrostatic pressure (HP) and concentration of bioactive compounds. Previously, a changed expression of tight junction (TJ) proteins was observed in mice MGs by accumulation of milk, in vivo. The TJ primarily determines the integrity of the MG epithelium. The present study questioned whether HP alone can affect the TJ in a mammary epithelial cell model, in vitro. Therefore, monolayers of HC11, a mammary epithelial cell line, were mounted into modified Ussing chambers and incubated with 10 kPa bilateral HP for 4 h. Short circuit current and transepithelial resistance were recorded and compared to controls, and TJ proteins were analyzed by Western blotting and immunofluorescent staining. In our first approach HC11 cells could withstand the pressure incubation and a downregulation of occludin was observed. In a second approach, using prolactin- and dexamethasone-induced cells, a decrease of short circuit current was observed, beginning after 2 h of incubation. With the addition of 1 mM barium chloride to the bathing solution the decrease could be blocked temporarily. On molecular level an upregulation of ZO-1 could be observed in hormone-induced cells, which was downregulated after the incubation with barium chloride. In conclusion, bilateral HP incubation affects mammary epithelial monolayers, in vitro. Both, the reduction of short circuit current and the change in TJ proteins may be interpreted as physiological requirements for lactation.
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Affiliation(s)
- Katharina S Mießler
- Institute of Veterinary Physiology, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany
| | - Alexander G Markov
- Department of General Physiology, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia
| | - Salah Amasheh
- Institute of Veterinary Physiology, Freie Universität Berlin, Oertzenweg 19b, 14163 Berlin, Germany.
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Tokuhara Y, Morinishi T, Matsunaga T, Sakai M, Sakai T, Ohsaki H, Kadota K, Kushida Y, Haba R, Hirakawa E. Nuclear expression of claudin-3 in human colorectal adenocarcinoma cell lines and tissues. Oncol Lett 2017; 15:99-108. [PMID: 29285188 DOI: 10.3892/ol.2017.7281] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 08/10/2017] [Indexed: 12/21/2022] Open
Abstract
Claudins are members of a large family of transmembrane proteins, which are essential for the formation of tight junctions and have a significant effect on the biological behavior of tumor progression. Previous studies have demonstrated that several claudins show aberrant expression patterns in numerous types of cancer. The present study investigated the expression and localization of claudin-3 and claudin-7 in human colorectal adenocarcinoma cell lines and tissues. The protein expression levels of claudin-3 and claudin-7 were determined using immunocytochemical and immunohistochemical staining. Claudin-3, but not claudin-7, exhibited nuclear localization in the human colorectal adenocarcinoma Caco-2 and SW620 cell lines. Surgically resected colorectal adenocarcinoma tissue specimens were obtained, and the associations between the expression of claudin-3 or claudin-7 and various clinicopathological parameters were analyzed. The membranous expression rates of claudin-3 and claudin-7 were 58.0 and 50.0%, while their nuclear expression rates were 22.0 and 2.0%, respectively. The membranous expression of claudin-3 and claudin-7 was not associated with any clinicopathological factors, whereas the nuclear expression of claudin-3 was associated with histological type and was significantly increased in colorectal mucinous adenocarcinomas compared with that in well- to moderately-differentiated colorectal adenocarcinomas (P<0.01). However, no associations were observed between the nuclear expression of claudin-7 and any clinicopathological parameter. In conclusion, the nuclear expression of claudin-3 in colorectal mucinous adenocarcinoma may be involved in the biological transformation of tumors. The results from the present study indicated that claudin-3 is an important protein associated with histological type and has potential as a prognostic marker. Although the mechanisms underlying the nuclear localization of claudin-3 in tumorigenesis have not yet been elucidated in detail, the present results indicated the potential of claudin-3 as a histopathological biomarker for colorectal adenocarcinomas.
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Affiliation(s)
- Yasunori Tokuhara
- Laboratory of Pathology, Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Kagawa 761-0123, Japan.,Department of Medical Technology, Ehime Prefectural University of Health Sciences, Tobe, Ehime 791-2101, Japan
| | - Tatsuya Morinishi
- Laboratory of Pathology, Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Kagawa 761-0123, Japan
| | - Toru Matsunaga
- Department of Diagnostic Pathology, University Hospital, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Manabu Sakai
- Department of Clinical Laboratory, Osaka University Dental Hospital, Osaka 565-0871, Japan
| | - Takayoshi Sakai
- Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Hiroyuki Ohsaki
- Laboratory of Pathology, Department of Medical Biophysics, Kobe University Graduate School of Health Sciences, Kobe, Hyogo 654-0142, Japan
| | - Kyuichi Kadota
- Department of Diagnostic Pathology, University Hospital, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Yoshio Kushida
- Department of Diagnostic Pathology, University Hospital, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Reiji Haba
- Department of Diagnostic Pathology, University Hospital, Faculty of Medicine, Kagawa University, Miki, Kagawa 761-0793, Japan
| | - Eiichiro Hirakawa
- Laboratory of Pathology, Department of Medical Technology, Kagawa Prefectural University of Health Sciences, Takamatsu, Kagawa 761-0123, Japan
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Wang JJ, Wei ZK, Zhang X, Wang YN, Fu YH, Yang ZT. Butyrate protects against disruption of the blood-milk barrier and moderates inflammatory responses in a model of mastitis induced by lipopolysaccharide. Br J Pharmacol 2017; 174:3811-3822. [PMID: 28800679 DOI: 10.1111/bph.13976] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 07/25/2017] [Accepted: 07/27/2017] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Short-chain fatty acids are fermentation end products produced by gut bacteria, which have been shown to ameliorate inflammatory bowel diseases and allergic asthma. However, the mechanism involved remains largely unknown. Here, we investigate the protective effects and mechanisms of sodium butyrate (SB) on LPS-induced mastitis model. EXPERIMENTAL APPROACH Effects of increasing doses of SB on blood-milk barrier function and inflammation are studied in BALB/c mice with LPS-induced mastitis. The underlying mechanisms of anti-inflammatory effects of SB were further investigated in LPS-stimulated mouse mammary epithelial cells (mMECs). KEY RESULTS The results show that SB decreased LPS-induced disruption in mammary tissues, infiltration of inflammatory cells and the levels of TNF-α, IL-6 and IL-1β. SB up-regulated the tight junction proteins occludin and claudin-3 and reduced blood-milk barrier permeability in LPS-induced mastitis. Studies in vitro revealed that SB inhibited LPS-induced inflammatory response by inhibition of the NF-κB signalling pathway and histone deacetylases in LPS-stimulated mMECs. CONCLUSIONS AND IMPLICATIONS In our model, SB protected against LPS-induced mastitis by preserving blood-milk barrier function and depressing pro-inflammatory responses, suggesting the potential use of SB as a prophylactic agent to protect blood-milk barrier function in mastitis.
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Affiliation(s)
- Jing-Jing Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Zheng-Kai Wei
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Xu Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Ya-Nan Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
| | - Yun-He Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China.,Department of Pathogenobiology, The Key Laboratory of Zoonosis, Chinese Ministry of Education, College of Basic Medicine, Jilin University, Changchun, Jilin Province, China
| | - Zheng-Tao Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province, China
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Lu Y, Wang L, Li H, Li Y, Ruan Y, Lin D, Yang M, Jin X, Guo Y, Zhang X, Quan C. SMAD2 Inactivation Inhibits CLDN6 Methylation to Suppress Migration and Invasion of Breast Cancer Cells. Int J Mol Sci 2017; 18:ijms18091863. [PMID: 28867761 PMCID: PMC5618512 DOI: 10.3390/ijms18091863] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/22/2017] [Accepted: 08/22/2017] [Indexed: 12/13/2022] Open
Abstract
The downregulation of tight junction protein CLDN6 promotes breast cancer cell migration and invasion; however, the exact mechanism underlying CLDN6 downregulation remains unclear. CLDN6 silence is associated with DNA methyltransferase 1 (DNMT1) mediated DNA methylation, and DNMT1 is regulated by the transforming growth factor beta (TGFβ)/SMAD pathway. Therefore, we hypothesized that TGFβ/SMAD pathway, specifically SMAD2, may play a critical role for CLDN6 downregulation through DNA methyltransferase 1 (DNMT1) mediated DNA methylation. To test this hypothesis, we blocked the SMAD2 pathway with SB431542 in two human breast cancer cell lines (MCF-7 and SKBR-3). Our results showed that treatment with SB431542 led to a decrease of DNMT1 expression and the binding activity for CLDN6 promoter. The methylation level of CLDN6 promoter was decreased, and simultaneously CLDN6 protein expression increased. Upregulation of CLDN6 inhibited epithelial to mesenchymal transition (EMT) and reduced the migration and invasion ability of both MCF-7 and SKBR-3 cells. Furthermore, knocked down of CLDN6 abolished SB431542 effects on suppression of EMT associated gene expression and inhibition of migration and invasion. Thus, we demonstrated that the downregulation of CLDN6 is regulated through promoter methylation by DNMT1, which depends on the SMAD2 pathway, and that CLDN6 is a key regulator in the SMAD2/DNMT1/CLDN6 pathway to inhibit EMT, migration and invasion of breast cancer cells.
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Affiliation(s)
- Yan Lu
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Liping Wang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
- Clinical Pathology Research Center, Department of Pathobiology, Qiqihar Medical University, Qiqihaer 161006, China.
| | - Hairi Li
- Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA 92093-0651, USA.
| | - Yanru Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Yang Ruan
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Dongjing Lin
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Minlan Yang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Xiangshu Jin
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Yantong Guo
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Xiaoli Zhang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
| | - Chengshi Quan
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China.
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Katayama A, Handa T, Komatsu K, Togo M, Horiguchi J, Nishiyama M, Oyama T. Expression patterns of claudins in patients with triple-negative breast cancer are associated with nodal metastasis and worse outcome. Pathol Int 2017; 67:404-413. [DOI: 10.1111/pin.12560] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 06/19/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Ayaka Katayama
- Diagnostic Pathology; Gunma University Graduate School of Medicine; Maebashi Japan
| | - Tadashi Handa
- Diagnostic Pathology; Gunma University Graduate School of Medicine; Maebashi Japan
| | - Kei Komatsu
- Diagnostic Pathology; Gunma University Graduate School of Medicine; Maebashi Japan
| | - Maria Togo
- Diagnostic Pathology; Gunma University Graduate School of Medicine; Maebashi Japan
| | - Jun Horiguchi
- Department of Thoracic and Visceral Organ Surgery; Gunma University Graduate School of Medicine; Maebashi Japan
| | - Masahiko Nishiyama
- Department of Molecular Pharmacology and Oncology; Gunma University Graduate School of Medicine; Maebashi Japan
| | - Tetsunari Oyama
- Diagnostic Pathology; Gunma University Graduate School of Medicine; Maebashi Japan
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Wu J, Zhou XJ, Sun X, Xia TS, Li XX, Shi L, Zhu L, Zhou WB, Wei JF, Ding Q. RBM38 is involved in TGF-β-induced epithelial-to-mesenchymal transition by stabilising zonula occludens-1 mRNA in breast cancer. Br J Cancer 2017; 117:675-684. [PMID: 28683467 PMCID: PMC5572167 DOI: 10.1038/bjc.2017.204] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 05/31/2017] [Accepted: 06/07/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The transforming growth factor-β (TGF-β) pathway plays a vital role in driving cancer cell epithelial-mesenchymal transition (EMT). Zonula occludens-1 (ZO-1), which is downregulated in response to TGF-β, is able to control endothelial cell-cell tension, cell migration, and barrier formation. However, the molecular mechanism of how TGF-β regulates ZO-1 expression remains unclear. METHODS Breast cancer cells were treated with TGF-β to induce an EMT progress. Chromatin immunoprecipitation and dual-luciferase reporter assay were performed to investigate direct relationship between Snail and RNA binding motif protein 38 (RBM38). The RNA immunoprecipitation combined with RNA electrophoretic mobility shift assay and dual-luciferase reporter assay were conducted to testify direct relationship between RBM38 and ZO-1. The ZO-1 siRNA was transfected to breast cancer cells that overexpress RBM38 and the control, followed by transwell and Matrigel invasion assays to examine cell migratory and invasive ability. RESULTS Transforming growth factor-β induced a remarkable downregulation of RBM38 in breast cancer that was directly regulated by transcription repressor Snail targeting the E-box elements in promoter region of RBM38 gene. Additionally, RBM38 positively regulated ZO-1 transcript via directly binding to AU/U-rich elements in its mRNA 3'-UTR. Moreover, by magnifying RBM38 expression, cell migration and invasion mediated by knockdown of ZO-1 in breast cancer were reversed. CONCLUSIONS All the results clarified a linear regulation relationship among Snail, RBM38, and ZO-1, implicating RBM38 as a pivotal mediator in TGF-β-induced EMT in breast cancer.
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Affiliation(s)
- Jing Wu
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Xu-Jie Zhou
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Xi Sun
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Tian-Song Xia
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Xiao-Xia Li
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Liang Shi
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Lei Zhu
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Wen-Bin Zhou
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Ji-Fu Wei
- Research Division of Clinical Pharmacology, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
| | - Qiang Ding
- Jiangsu Breast Disease Center, The First Affiliated Hospital with Nanjing Medical University, 300 Guangzhou Road, Nanjing 210029, China
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48
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Markov AG, Aschenbach JR, Amasheh S. The epithelial barrier and beyond: Claudins as amplifiers of physiological organ functions. IUBMB Life 2017; 69:290-296. [PMID: 28371008 DOI: 10.1002/iub.1622] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 03/03/2017] [Indexed: 12/22/2022]
Abstract
Epithelial cell layers are interconnected by a meshwork of tight junction (TJ) protein strands, which are localized within apicolateral membranes. The proteins that form TJs are regarded to provide a static barrier, determining epithelial properties. However, recent findings in the field of barriology suggest that TJs contribute to more physiological aspects than indicated by the sum of the qualities of the single TJ proteins. Generally, TJs exhibit four major functions: (i) a "gate function," defining transepithelial permeability (i.e., barrier) properties, (ii) a "fence function" determining epithelial cell polarity, (iii) a "signaling function," affecting regulatory pathways, and (iv) a "stabilizing function," maintaining the integrity of the epithelium. This review presents a critical view on how the efficacy of physiological processes in epithelia and thus organ function might be improved by changes in the expression of claudins, the latter representing the largest and most variable family of TJ proteins. Major focus is set on (i) the coordinated regulation of transport and barrier in the intestine, (ii) the role of TJs in defining the route for antigen uptake and presentation in intestinal Peyer's patches, and (iii) the TJ function in mammary glands in response to milk accumulation, which represent impressive examples to highlight the amplification of epithelial functions by TJ proteins. © 2017 IUBMB Life, 69(5):290-296, 2017.
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Affiliation(s)
- Alexander G Markov
- Department of General Physiology, St. Petersburg State University, Russia
| | - Jörg R Aschenbach
- Department of Veterinary Medicine, Freie Universität Berlin, Institute of Veterinary Physiology, Berlin, Germany
| | - Salah Amasheh
- Department of Veterinary Medicine, Freie Universität Berlin, Institute of Veterinary Physiology, Berlin, Germany
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49
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Yao H, Yang Z, Liu Z, Miao X, Yang L, Li D, Zou Q, Yuan Y. Glypican-3 and KRT19 are markers associating with metastasis and poor prognosis of pancreatic ductal adenocarcinoma. Cancer Biomark 2017; 17:397-404. [PMID: 27689616 DOI: 10.3233/cbm-160655] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant tumor with metastasis in most patients at diagnosis. The molecular mechanisms associated with its high malignancy have not been fully elucidated. This study investigated the clinicopathological significances of GPC3 and KRT19 expression in PDAC. METHODS GPC3, KRT19, and CA19-9 protein expression were measured by immunohistochemistry. RESULTS GPC3 and KRT19 protein levels were overexpressed in PDAC tumors compared to normal pancreatic tissues, benign pancreatic tissues, and peritumoral tissues (P< 0.01). The percentage of positive GPC3 and KRT19 expression were significantly higher in PDAC patients with larger tumor size, poorly differentiated tumor, lymph node metastasis, invasion, and TNM stage III/IV disease than in patients with small tumor size, well-differentiated tumor, no lymph node metastasis and invasion, as well as TNM stage I/II stage disease (P< 0.05 or P< 0.01). Benign pancreatic lesions with positive GPC3 and KRT19 protein expression exhibited dysplasia or intraepithelial neoplasia. Kaplan-Meier survival analysis showed that PDAC patients with positive GPC3 and KRT19 expression survived significantly shorter than patients with negative GPC3 and KRT19 expression (P < 0.05 or P< 0.001). Cox multivariate analysis revealed that positive GPC3 and KRT19 expression were independent poor prognosis factors in PDAC patients. CONCLUSIONS GPC3 and KRT19 overexpression are associated with carcinogenesis, progression, and poor prognosis in patients with PDAC and a valuable biomarker for diagnosis of PDAC.
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Affiliation(s)
- Hongliang Yao
- Department of General Surgery, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhulin Yang
- Research Laboratory of Hepatobiliary Diseases, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ziru Liu
- Research Laboratory of Hepatobiliary Diseases, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiongying Miao
- Research Laboratory of Hepatobiliary Diseases, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Leping Yang
- Research Laboratory of Hepatobiliary Diseases, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Daiqiang Li
- Department of Pathology, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiong Zou
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yuan Yuan
- Department of Pathology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
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50
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Phyn CVC, Stelwagen K, Davis SR, McMahon CD, Dobson JM, Singh K. Tight Junction Protein Abundance and Apoptosis During Involution of Rat Mammary Glands. J Cell Physiol 2017; 232:2075-2082. [DOI: 10.1002/jcp.25591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 09/07/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Claire V. C. Phyn
- AgResearch Ltd.; Ruakura Research Centre; Hamilton New Zealand
- DairyNZ Ltd.; Hamilton New Zealand
| | - Kerst Stelwagen
- AgResearch Ltd.; Ruakura Research Centre; Hamilton New Zealand
- SciLactis Ltd.; Hamilton New Zealand
| | - Stephen R. Davis
- AgResearch Ltd.; Ruakura Research Centre; Hamilton New Zealand
- LIC; Hamilton New Zealand
| | - Christopher D. McMahon
- AgResearch Ltd.; Ruakura Research Centre; Hamilton New Zealand
- ManukaMed Ltd.; Hamilton New Zealand
| | - Joanne M. Dobson
- AgResearch Ltd.; Ruakura Research Centre; Hamilton New Zealand
- Carne Technologies Ltd.; Cambridge New Zealand
| | - Kuljeet Singh
- AgResearch Ltd.; Ruakura Research Centre; Hamilton New Zealand
- Science Consultancy; Hamilton New Zealand
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