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Jiang M, Wang X, Chen Z, Wang X, An Y, Ding L, Xu M, Fan B, Jiao P, Wang C, Wang M, Sun H, Zhao S, Gong Y. Lipolysis-Stimulated Lipoprotein Receptor in Proximal Tubule, BMP-SMAD Signaling, and Kidney Disease. J Am Soc Nephrol 2024; 35:1016-1033. [PMID: 38809616 PMCID: PMC11377808 DOI: 10.1681/asn.0000000000000382] [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: 12/17/2023] [Accepted: 05/14/2024] [Indexed: 05/31/2024] Open
Abstract
Key Points
We identify that lipolysis-stimulated lipoprotein receptor is highly enriched in the nucleus of mouse and human kidney.This study provides new insights into the role of lipolysis-stimulated lipoprotein receptor in kidney disease.
Background
Lipolysis-stimulated lipoprotein receptor (LSR) is a single-pass membrane protein that plays essential roles in tricellular tight junction organization in the epithelium and endothelium, but its function in kidney physiology and disease development remains unknown.
Methods
Conditional Lsr deletion mice were generated and analyzed to investigate the function of LSR in proximal tubule. Unilateral ischemia-reperfusion was used as an injury model to investigate the role of LSR in AKI and the progression to CKD. Detailed mechanistic analyses were conducted using whole-transcriptome RNA sequencing, immunofluorescence, dual-luciferase reporter gene assay, coimmunoprecipitation, RNA immunoprecipitation, and adeno-associated virus-mediated gene overexpression and knockdown.
Results
The nuclear localization of LSR was found in the kidney. Proximal tubule–specific Lsr knockout mice exhibited alleviated kidney damage and fibrosis compared with those in wild-type mice in response unilateral ischemia-reperfusion injury. Loss of LSR resulted in downregulation of Chrdl1 and activation of bone morphogenetic protein (BMP)-mothers against decapentaplegic homolog (SMAD) signaling in proximal tubules. Treatment with CHRDL1 counteracted the protective effect of LSR deletion in the unilaterally ischemic injured kidney. In addition, the systemic delivery of Chrdl1 short hairpin RNA attenuated injury-induced kidney fibrosis. LSR formed a complex with 14-3-3θ in the nucleus of proximal tubular cells, thereby reducing the interaction between human antigen R and 14-3-3θ, consequently leading to the translocation of unbound human antigen R to the cytoplasm. The absence of LSR promoted the association of 14-3-3θ with human antigen R, potentially resulting in decreased human antigen R levels in the cytoplasm. Reduced human antigen R levels impaired Chrdl1 mRNA stability, subsequently leading to the activation of BMP-SMAD signaling.
Conclusions
Deletion of LSR in proximal tubule deregulated Chrdl1 to activate BMP-SMAD signaling and ameliorated kidney disease.
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Affiliation(s)
- Min Jiang
- Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, China
- Department of Pharmacology, Binzhou Medical University, Yantai, China
| | - Xiangdong Wang
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Zhenni Chen
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Xin Wang
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Yanan An
- Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, China
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Lixia Ding
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Mengyuan Xu
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Baozhen Fan
- Department of Urology, Binzhou Medical University Hospital, Binzhou, China
| | - Peng Jiao
- Department of Urology, Binzhou Medical University Hospital, Binzhou, China
| | - Chao Wang
- Department of Urology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Mingxia Wang
- Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, China
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Hui Sun
- Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, China
- Department of Physiology, Binzhou Medical University, Yantai, China
| | - Shengtian Zhao
- Department of Urology, Binzhou Medical University Hospital, Binzhou, China
- Shandong Provincial Engineering Laboratory of Urologic Tissue Reconstruction, Jinan, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Yongfeng Gong
- Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, China
- Department of Physiology, Binzhou Medical University, Yantai, China
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Jia X, Huang Y, Liu G, Li Z, Tan Q, Zhong S. The Use of Polysaccharide AOP30 from the Rhizome of Alpinia officinarum Hance to Alleviate Lipopolysaccharide-Induced Intestinal Epithelial Barrier Dysfunction and Inflammation via the TLR4/NfκB Signaling Pathway in Caco-2 Cell Monolayers. Nutrients 2024; 16:2151. [PMID: 38999898 PMCID: PMC11243348 DOI: 10.3390/nu16132151] [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: 04/21/2024] [Revised: 06/28/2024] [Accepted: 07/02/2024] [Indexed: 07/14/2024] Open
Abstract
Alpinia officinarum Hance is rich in carbohydrates and is flavored by natives. The polysaccharide fraction 30 is purified from the rhizome of A. officinarum Hance (AOP30) and shows excellent immunoregulatory ability when administered to regulate immunity. However, the effect of AOP30 on the intestinal epithelial barrier is not well understood. Therefore, the aim of this study is to investigate the protective effect of AOP30 on the intestinal epithelial barrier using a lipopolysaccharide (LPS)-induced intestinal epithelial barrier dysfunction model and further explore its underlying mechanisms. Cytotoxicity, transepithelial electrical resistance (TEER) values, and Fluorescein isothiocyanate (FITC)-dextran flux are measured. Simultaneously, the protein and mRNA levels of tight junction (TJ) proteins, including zonula occludens-1 (ZO-1), Occludin, and Claudin-1, are determined using Western blotting and reverse-transcription quantitative polymerase chain reaction methods, respectively. The results indicate that AOP30 restores the LPS-induced decrease in the TEER value and cell viability. Furthermore, it increases the mRNA and protein expression of ZO-1, Occludin, and Claudin-1. Notably, ZO-1 is the primary tight junction protein altered in response to LPS-induced intestinal epithelial dysfunction. Additionally, AOP30 downregulates the production of TNFα via the Toll-like receptor 4 (TLR4)/NF-κB signaling pathway. Collectively, the findings of this study indicate that AOP30 can be developed as a functional food ingredient or natural therapeutic agent for addressing intestinal epithelial barrier dysfunction. It sheds light on the role of AOP30 in improving intestinal epithelial function.
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Affiliation(s)
- Xuejing Jia
- Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Guangdong Provincial Engineering Technology Research Center of Seafood, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Yun Huang
- Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Guangdong Provincial Engineering Technology Research Center of Seafood, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Guanghuo Liu
- Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Guangdong Provincial Engineering Technology Research Center of Seafood, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Zipeng Li
- Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Guangdong Provincial Engineering Technology Research Center of Seafood, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Qiwei Tan
- Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Guangdong Provincial Engineering Technology Research Center of Seafood, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
| | - Saiyi Zhong
- Guangdong Provincial Key Laboratory of Aquatic Products Processing and Safety, Guangdong Provincial Science and Technology Innovation Center for Subtropical Fruit and Vegetable Processing, Guangdong Provincial Engineering Technology Research Center of Seafood, College of Food Science and Technology, Guangdong Ocean University, Zhanjiang 524088, China
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3
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Hansen ME, Ibrahim Y, Desai TA, Koval M. Nanostructure-Mediated Transport of Therapeutics through Epithelial Barriers. Int J Mol Sci 2024; 25:7098. [PMID: 39000205 PMCID: PMC11241453 DOI: 10.3390/ijms25137098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 07/16/2024] Open
Abstract
The ability to precisely treat human disease is facilitated by the sophisticated design of pharmacologic agents. Nanotechnology has emerged as a valuable approach to creating vehicles that can specifically target organ systems, effectively traverse epithelial barriers, and protect agents from premature degradation. In this review, we discuss the molecular basis for epithelial barrier function, focusing on tight junctions, and describe different pathways that drugs can use to cross barrier-forming tissue, including the paracellular route and transcytosis. Unique features of drug delivery applied to different organ systems are addressed: transdermal, ocular, pulmonary, and oral delivery. We also discuss how design elements of different nanoscale systems, such as composition and nanostructured architecture, can be used to specifically enhance transepithelial delivery. The ability to tailor nanoscale drug delivery vehicles to leverage epithelial barrier biology is an emerging theme in the pursuit of facilitating the efficacious delivery of pharmacologic agents.
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Affiliation(s)
- M. Eva Hansen
- University of California Berkeley-University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA;
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143, USA
| | - Yasmin Ibrahim
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
- Graduate Program in Biochemistry, Cell and Developmental Biology, Graduate Division of Biological and Biomedical Sciences, Emory University, Atlanta, GA 30322, USA
| | - Tejal A. Desai
- University of California Berkeley-University of California San Francisco Graduate Program in Bioengineering, San Francisco, CA 94143, USA;
- Department of Bioengineering and Therapeutic Sciences, University of California San Francisco, San Francisco, CA 94143, USA
- School of Engineering, Brown University, Providence, RI 02912, USA
| | - Michael Koval
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA;
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
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Xie L, Wu G, Liu X, Duan X, Zhou K, Li H, Ning W. The TRIP6/LATS1 complex constitutes the tension sensor of α-catenin/vinculin at both bicellular and tricellular junctions. Eur J Cell Biol 2024; 103:151426. [PMID: 38805800 DOI: 10.1016/j.ejcb.2024.151426] [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: 11/29/2023] [Revised: 05/21/2024] [Accepted: 05/22/2024] [Indexed: 05/30/2024] Open
Abstract
Cell-cell mechanotransduction regulates tissue development and homeostasis. α-catenin, the core component of adherens junctions, functions as a tension sensor and transducer by recruiting vinculin and transducing signals that influence cell behaviors. α-catenin/vinculin complex-mediated mechanotransduction regulates multiple pathways, such as Hippo pathway. However, their associations with the α-catenin-based tension sensors at cell junctions are still not fully addressed. Here, we uncovered the TRIP6/LATS1 complex co-localizes with α-catenin/vinculin at both bicellular junctions (BCJs) and tricellular junctions (TCJs). The localization of TRIP6/LATS1 complex to both TCJs and BCJs requires ROCK1 and α-catenin. Treatment by cytochalasin B, Y-27632 and blebbistatin all impaired the BCJ and TCJ junctional localization of TRIP6/LATS1, indicating that the junctional localization of TRIP6/LATS1 is mechanosensitive. The α-catenin/vinculin/TRIP6/LATS1 complex strongly localized to TCJs and exhibited a discontinuous button-like pattern on BCJs. Additionally, we developed and validated an α-catenin/vinculin BiFC-based mechanosensor that co-localizes with TRIP6/LATS1 at BCJs and TCJs. The mechanosensor exhibited a discontinuous distribution and motile signals at BCJs. Overall, our study revealed that TRIP6 and LATS1 are novel compositions of the tension sensor, together with the core complex of α-catenin/vinculin, at both the BCJs and TCJs.
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Affiliation(s)
- Lin Xie
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China
| | - Gangyun Wu
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China
| | - Xiayu Liu
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China
| | - Xiufen Duan
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China
| | - Kaiyao Zhou
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China
| | - Hua Li
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China.
| | - Wenxiu Ning
- Center for Life Sciences, Yunnan University, Kunming, Yunnan 650500, China; Yunnan Key Laboratory of Cell Metabolism and Diseases, Kunming, Yunnan 650500, China.
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5
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Higashi T, Saito AC, Chiba H. Damage control of epithelial barrier function in dynamic environments. Eur J Cell Biol 2024; 103:151410. [PMID: 38579602 DOI: 10.1016/j.ejcb.2024.151410] [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: 12/30/2023] [Revised: 03/27/2024] [Accepted: 03/30/2024] [Indexed: 04/07/2024] Open
Abstract
Epithelial tissues cover the surfaces and lumens of the internal organs of multicellular animals and crucially contribute to internal environment homeostasis by delineating distinct compartments within the body. This vital role is known as epithelial barrier function. Epithelial cells are arranged like cobblestones and intricately bind together to form an epithelial sheet that upholds this barrier function. Central to the restriction of solute and fluid diffusion through intercellular spaces are occluding junctions, tight junctions in vertebrates and septate junctions in invertebrates. As part of epithelial tissues, cells undergo constant renewal, with older cells being replaced by new ones. Simultaneously, the epithelial tissue undergoes relative rearrangement, elongating, and shifting directionally as a whole. The movement or shape changes within the epithelial sheet necessitate significant deformation and reconnection of occluding junctions. Recent advancements have shed light on the intricate mechanisms through which epithelial cells sustain their barrier function in dynamic environments. This review aims to introduce these noteworthy findings and discuss some of the questions that remain unanswered.
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Affiliation(s)
- Tomohito Higashi
- Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan.
| | - Akira C Saito
- Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Hideki Chiba
- Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan
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6
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Dithmer S, Blasig IE, Fraser PA, Qin Z, Haseloff RF. The Basic Requirement of Tight Junction Proteins in Blood-Brain Barrier Function and Their Role in Pathologies. Int J Mol Sci 2024; 25:5601. [PMID: 38891789 PMCID: PMC11172262 DOI: 10.3390/ijms25115601] [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: 02/07/2024] [Revised: 03/10/2024] [Accepted: 03/28/2024] [Indexed: 06/21/2024] Open
Abstract
This review addresses the role of tight junction proteins at the blood-brain barrier (BBB). Their expression is described, and their role in physiological and pathological processes at the BBB is discussed. Based on this, new approaches are depicted for paracellular drug delivery and diagnostics in the treatment of cerebral diseases. Recent data provide convincing evidence that, in addition to its impairment in the course of diseases, the BBB could be involved in the aetiology of CNS disorders. Further progress will be expected based on new insights in tight junction protein structure and in their involvement in signalling pathways.
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Affiliation(s)
- Sophie Dithmer
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Str. 10, 13125 Berlin, Germany (I.E.B.)
| | - Ingolf E. Blasig
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Str. 10, 13125 Berlin, Germany (I.E.B.)
| | | | - Zhihai Qin
- Institute of Biophysics, Chinese Academy of Sciences, Beijing 100049, China
| | - Reiner F. Haseloff
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie, Robert-Rössle-Str. 10, 13125 Berlin, Germany (I.E.B.)
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7
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Citi S, Fromm M, Furuse M, González-Mariscal L, Nusrat A, Tsukita S, Turner JR. A short guide to the tight junction. J Cell Sci 2024; 137:jcs261776. [PMID: 38712627 PMCID: PMC11128289 DOI: 10.1242/jcs.261776] [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] [Indexed: 05/08/2024] Open
Abstract
Tight junctions (TJs) are specialized regions of contact between cells of epithelial and endothelial tissues that form selective semipermeable paracellular barriers that establish and maintain body compartments with different fluid compositions. As such, the formation of TJs represents a critical step in metazoan evolution, allowing the formation of multicompartmental organisms and true, barrier-forming epithelia and endothelia. In the six decades that have passed since the first observations of TJs by transmission electron microscopy, much progress has been made in understanding the structure, function, molecular composition and regulation of TJs. The goal of this Perspective is to highlight the key concepts that have emerged through this research and the future challenges that lie ahead for the field.
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Affiliation(s)
- Sandra Citi
- Department of Molecular and Cellular Biology, University of Geneva, 30 Quai Ernest Ansermet, 1205 Geneva, Switzerland
| | - Michael Fromm
- Clinical Physiology/Nutritional Medicine, Department of Gastroenterology, Charité – Universitätsmedizin Berlin,Campus Benjamin Franklin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Mikio Furuse
- Division of Cell Structure, National Institute for Physiological Sciences, 5-1 Higashiyama Myodajii, Okazaki 444-8787, Japan
| | - Lorenza González-Mariscal
- Department of Physiology, Biophysics and Neuroscience, Center for Research and Advanced Studies (CINVESTAV), Av. Instituto Politécnico Nacional 2508, Mexico City 07360, México
| | - Asma Nusrat
- Mucosal Biology and Inflammation Research Group, Department of Pathology, University of Michigan, 109 Zina Pitcher Place, 4057 Biomedical Science Research Building, Ann Arbor, MI 48109-2200, USA
| | - Sachiko Tsukita
- Advanced Comprehensive Research Organization (ACRO),Teikyo University, Kaga 2-21-1, Itabashi-ku, Tokyo 173-0003, Japan
| | - Jerrold R. Turner
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, MA 01125, USA
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8
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López-Posadas R, Bagley DC, Pardo-Pastor C, Ortiz-Zapater E. The epithelium takes the stage in asthma and inflammatory bowel diseases. Front Cell Dev Biol 2024; 12:1258859. [PMID: 38529406 PMCID: PMC10961468 DOI: 10.3389/fcell.2024.1258859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 02/22/2024] [Indexed: 03/27/2024] Open
Abstract
The epithelium is a dynamic barrier and the damage to this epithelial layer governs a variety of complex mechanisms involving not only epithelial cells but all resident tissue constituents, including immune and stroma cells. Traditionally, diseases characterized by a damaged epithelium have been considered "immunological diseases," and research efforts aimed at preventing and treating these diseases have primarily focused on immuno-centric therapeutic strategies, that often fail to halt or reverse the natural progression of the disease. In this review, we intend to focus on specific mechanisms driven by the epithelium that ensure barrier function. We will bring asthma and Inflammatory Bowel Diseases into the spotlight, as we believe that these two diseases serve as pertinent examples of epithelium derived pathologies. Finally, we will argue how targeting the epithelium is emerging as a novel therapeutic strategy that holds promise for addressing these chronic diseases.
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Affiliation(s)
- Rocío López-Posadas
- Department of Medicine 1, University Hospital of Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Deutsches Zentrum für Immuntherapie, Friedrich-Alexander-Universtiy Eralngen-Nürnberg, Erlangen, Germany
| | - Dustin C. Bagley
- Randall Centre for Cell and Molecular Biophysics, New Hunt’s House, School of Basic and Medical Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Carlos Pardo-Pastor
- Randall Centre for Cell and Molecular Biophysics, New Hunt’s House, School of Basic and Medical Sciences, Faculty of Life Sciences and Medicine, King’s College London, London, United Kingdom
| | - Elena Ortiz-Zapater
- Department of Biochemistry and Molecular Biology, Universitat de Valencia, Valencia, Spain
- Instituto Investigación Hospital Clínico-INCLIVA, Valencia, Spain
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9
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Konno T, Kohno T, Kikuchi S, Kura A, Saito K, Okada T, Shimada H, Yamazaki Y, Sugiyama T, Matsuura M, Ohsaki Y, Saito T, Kojima T. The interplay between the epithelial permeability barrier, cell migration and mitochondrial metabolism of growth factors and their inhibitors in a human endometrial carcinoma cell line. Tissue Barriers 2024:2304443. [PMID: 38225862 DOI: 10.1080/21688370.2024.2304443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/28/2023] [Indexed: 01/17/2024] Open
Abstract
It is known that there are abnormalities of tight junction functions, cell migration and mitochondrial metabolism in human endometriosis and endometrial carcinoma. In this study, we investigated the effects of growth factors and their inhibitors on the epithelial permeability barrier, cell migration and mitochondrial metabolism in 2D and 2.5D cultures of human endometrioid endometrial carcinoma Sawano cells. We also investigated the changes of bicellular and tricellular tight junction molecules and ciliogenesis induced by these inhibitors. The growth factors TGF-β and EGF affected the epithelial permeability barrier, cell migration and expression of bicellular and tricellular tight junction molecules in 2D and 2.5D cultures of Sawano cells. EW-7197 (a TGF-β receptor inhibitor), AG1478 (an EGFR inhibitor) and SP600125 (a JNK inhibitor) affected the epithelial permeability barrier, cell migration and mitochondrial metabolism and prevented the changes induced by TGF-β and EGF in 2D and 2.5D cultures. EW-7197 and AG1478 induced ciliogenesis in 2.5D cultures. In conclusion, TGF-β and EGF promoted the malignancy of endometrial cancer via interplay among the epithelial permeability barrier, cell migration and mitochondrial metabolism. EW-7197 and AG1478 may be useful as novel therapeutic treatments options for endometrial cancer.
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Affiliation(s)
- Takumi Konno
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takayuki Kohno
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Shin Kikuchi
- Department of Anatomy, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Arisa Kura
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kimihito Saito
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tadahi Okada
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hiroshi Shimada
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuya Yamazaki
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoki Sugiyama
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Motoki Matsuura
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuki Ohsaki
- Department of Anatomy, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tsuyoshi Saito
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Takashi Kojima
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
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10
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Wibbe N, Ebnet K. Cell Adhesion at the Tight Junctions: New Aspects and New Functions. Cells 2023; 12:2701. [PMID: 38067129 PMCID: PMC10706136 DOI: 10.3390/cells12232701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 11/17/2023] [Accepted: 11/23/2023] [Indexed: 12/18/2023] Open
Abstract
Tight junctions (TJ) are cell-cell adhesive structures that define the permeability of barrier-forming epithelia and endothelia. In contrast to this seemingly static function, TJs display a surprisingly high molecular complexity and unexpected dynamic regulation, which allows the TJs to maintain a barrier in the presence of physiological forces and in response to perturbations. Cell-cell adhesion receptors play key roles during the dynamic regulation of TJs. They connect individual cells within cellular sheets and link sites of cell-cell contacts to the underlying actin cytoskeleton. Recent findings support the roles of adhesion receptors in transmitting mechanical forces and promoting phase separation. In this review, we discuss the newly discovered functions of cell adhesion receptors localized at the TJs and their role in the regulation of the barrier function.
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Affiliation(s)
- Nicolina Wibbe
- Institute-Associated Research Group "Cell Adhesion and Cell Polarity", Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, D-48149 Münster, Germany
| | - Klaus Ebnet
- Institute-Associated Research Group "Cell Adhesion and Cell Polarity", Institute of Medical Biochemistry, ZMBE, University of Münster, Von-Esmarch-Str. 56, D-48149 Münster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003-CiM), University of Münster, D-48419 Münster, Germany
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11
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An Y, Wang C, Fan B, Wang Z, Li Y, Kong F, Zhou C, Cao Z, Wang M, Sun H, Zhao S, Gong Y. LSR targets YAP to modulate intestinal Paneth cell differentiation. Cell Rep 2023; 42:113118. [PMID: 37703178 DOI: 10.1016/j.celrep.2023.113118] [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: 11/29/2022] [Revised: 07/26/2023] [Accepted: 08/25/2023] [Indexed: 09/15/2023] Open
Abstract
Lipolysis-stimulated lipoprotein receptor (LSR) is a multi-functional protein that is best known for its roles in assembly of epithelial tricellular tight junctions and hepatic clearance of lipoproteins. Here, we investigated whether LSR contributes to intestinal epithelium homeostasis and pathogenesis of intestinal disease. By using multiple conditional deletion mouse models and ex vivo cultured organoids, we find that LSR elimination in intestinal stem cells results in the disappearance of Paneth cells without affecting the differentiation of other cell lineages. Mechanistic studies reveal that LSR deficiency increases abundance of YAP by modulating its phosphorylation and proteasomal degradation. Using gain- and loss-of-function studies, we show that LSR protects against necrotizing enterocolitis through enhancement of Paneth cell differentiation in small-intestinal epithelium. Thus, this study identifies LSR as an upstream negative regulator of YAP activity, an essential factor for Paneth cell differentiation, and a potential therapeutic target for necrotizing enterocolitis.
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Affiliation(s)
- Yanan An
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China; Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, Shandong, China
| | - Chao Wang
- Department of Urology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Baozhen Fan
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
| | - Ziqi Wang
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China
| | - Ying Li
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China
| | - Feng Kong
- Shandong Provincial Engineering Laboratory of Urologic Tissue Reconstruction, Jinan, Shandong, China; Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Department of Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Chengjun Zhou
- Department of Pathology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Zhang Cao
- Department of Pathology, Binzhou Medical University Hospital, Binzhou, Shandong, China
| | - Mingxia Wang
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China
| | - Hui Sun
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China
| | - Shengtian Zhao
- Department of Urology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China; Shandong Provincial Engineering Laboratory of Urologic Tissue Reconstruction, Jinan, Shandong, China; Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
| | - Yongfeng Gong
- Department of Physiology, Binzhou Medical University, Yantai, Shandong, China; Shandong Engineering Research Center of Molecular Medicine for Renal Diseases, Yantai, Shandong, China.
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12
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Higashi T, Stephenson RE, Schwayer C, Huljev K, Higashi AY, Heisenberg CP, Chiba H, Miller AL. ZnUMBA - a live imaging method to detect local barrier breaches. J Cell Sci 2023; 136:jcs260668. [PMID: 37461809 PMCID: PMC10445723 DOI: 10.1242/jcs.260668] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 07/06/2023] [Indexed: 08/09/2023] Open
Abstract
Epithelial barrier function is commonly analyzed using transepithelial electrical resistance, which measures ion flux across a monolayer, or by adding traceable macromolecules and monitoring their passage across the monolayer. Although these methods measure changes in global barrier function, they lack the sensitivity needed to detect local or transient barrier breaches, and they do not reveal the location of barrier leaks. Therefore, we previously developed a method that we named the zinc-based ultrasensitive microscopic barrier assay (ZnUMBA), which overcomes these limitations, allowing for detection of local tight junction leaks with high spatiotemporal resolution. Here, we present expanded applications for ZnUMBA. ZnUMBA can be used in Xenopus embryos to measure the dynamics of barrier restoration and actin accumulation following laser injury. ZnUMBA can also be effectively utilized in developing zebrafish embryos as well as cultured monolayers of Madin-Darby canine kidney (MDCK) II epithelial cells. ZnUMBA is a powerful and flexible method that, with minimal optimization, can be applied to multiple systems to measure dynamic changes in barrier function with spatiotemporal precision.
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Affiliation(s)
- Tomohito Higashi
- Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Rachel E. Stephenson
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Cornelia Schwayer
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria
| | - Karla Huljev
- Institute of Science and Technology Austria, 3400 Klosterneuburg, Austria
| | - Atsuko Y. Higashi
- Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan
- Department of Nephrology and Hypertension, Fukushima Medical University, Fukushima 960-1295, Japan
| | | | - Hideki Chiba
- Department of Basic Pathology, Fukushima Medical University, Fukushima 960-1295, Japan
| | - Ann L. Miller
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
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13
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Ramirez-Velez I, Belardi B. Storming the gate: New approaches for targeting the dynamic tight junction for improved drug delivery. Adv Drug Deliv Rev 2023; 199:114905. [PMID: 37271282 PMCID: PMC10999255 DOI: 10.1016/j.addr.2023.114905] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/20/2023] [Accepted: 05/29/2023] [Indexed: 06/06/2023]
Abstract
As biologics used in the clinic outpace the number of new small molecule drugs, an important challenge for their efficacy and widespread use has emerged, namely tissue penetrance. Macromolecular drugs - bulky, high-molecular weight, hydrophilic agents - exhibit low permeability across biological barriers. Epithelial and endothelial layers, for example within the gastrointestinal tract or at the blood-brain barrier, present the most significant obstacle to drug transport. Within epithelium, two subcellular structures are responsible for limiting absorption: cell membranes and intercellular tight junctions. Previously considered impenetrable to macromolecular drugs, tight junctions control paracellular flux and dictate drug transport between cells. Recent work, however, has shown tight junctions to be dynamic, anisotropic structures that can be targeted for delivery. This review aims to summarize new approaches for targeting tight junctions, both directly and indirectly, and to highlight how manipulation of tight junction interactions may help usher in a new era of precision drug delivery.
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Affiliation(s)
- Isabela Ramirez-Velez
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States
| | - Brian Belardi
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, United States.
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14
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Yan L, Dwiggins CW, Moriarty RA, Jung JW, Gupta U, Brandon KD, Stroka KM. Matrix stiffness regulates the tight junction phenotypes and local barrier properties in tricellular regions in an iPSC-derived BBB model. Acta Biomater 2023:S1742-7061(23)00327-6. [PMID: 37302732 DOI: 10.1016/j.actbio.2023.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/13/2023]
Abstract
The blood-brain barrier (BBB) can respond to various mechanical cues such as shear stress and substrate stiffness. In the human brain, the compromised barrier function of the BBB is closely associated with a series of neurological disorders that are often also accompanied by the alteration of brain stiffness. In many types of peripheral vasculature, higher matrix stiffness decreases barrier function of endothelial cells through mechanotransduction pathways that alter cell-cell junction integrity. However, human brain endothelial cells are specialized endothelial cells that largely resist changes in cell morphology and key BBB markers. Therefore, it has remained an open question how matrix stiffness affects barrier integrity in the human BBB. To gain insight into the effects of matrix stiffness on BBB permeability, we differentiated brain microvascular endothelial-like cells from human induced pluripotent stem cells (iBMEC-like cells) and cultured the cells on extracellular matrix-coated hydrogels of varying stiffness. We first detected and quantified the junction presentation of key tight junction (TJ) proteins. Our results show matrix-dependent junction phenotypes in iBMEC-like cells, where cells on softer gels (1 kPa) have significantly lower continuous and total TJ coverages. We also determined that these softer gels also lead to decreased barrier function in a local permeability assay. Furthermore, we found that matrix stiffness regulates the local permeability of iBMEC-like cells through the balance of continuous ZO-1 TJs and no junction regions ZO-1 in tricellular regions. Together, these findings provide valuable insights into the effects of matrix stiffness on TJ phenotypes and local permeability of iBMEC-like cells. STATEMENT OF SIGNIFICANCE: Brain mechanical properties, including stiffness, are particularly sensitive indicators for pathophysiological changes in neural tissue. The compromised function of the blood-brain barrier is closely associated with a series of neurological disorders often accompanied by altered brain stiffness. In this study, we use polymeric biomaterials and provide new evidence that biomaterial stiffness regulates the local permeability in iPSC-derived brain endothelial cells in tricellular regions through the tight junction protein ZO-1. Our findings provide valuable insights into the changes in junction architecture and barrier permeability in response to different substrate stiffnesses. Since BBB dysfunction has been linked to many diseases, understanding the influence of substrate stiffness on junction presentations and barrier permeability could lead to the development of new treatments for diseases associated with BBB dysfunction or drug delivery across BBB systems.
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Affiliation(s)
- Li Yan
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA.
| | - Cole W Dwiggins
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Rebecca A Moriarty
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Jae W Jung
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Udit Gupta
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Ken D Brandon
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Kimberly M Stroka
- Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA; Biophysics Program, University of Maryland, College Park, MD 20742, USA; Center for Stem Cell Biology and Regenerative Medicine, University of Maryland, Baltimore, MD 21201, USA; Marlene and Stewart Greenebaum Comprehensive Cancer Center, University of Maryland, Baltimore, MD 21201, USA.
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15
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Horowitz A, Chanez-Paredes SD, Haest X, Turner JR. Paracellular permeability and tight junction regulation in gut health and disease. Nat Rev Gastroenterol Hepatol 2023:10.1038/s41575-023-00766-3. [PMID: 37186118 PMCID: PMC10127193 DOI: 10.1038/s41575-023-00766-3] [Citation(s) in RCA: 114] [Impact Index Per Article: 114.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/03/2023] [Indexed: 05/17/2023]
Abstract
Epithelial tight junctions define the paracellular permeability of the intestinal barrier. Molecules can cross the tight junctions via two distinct size-selective and charge-selective paracellular pathways: the pore pathway and the leak pathway. These can be distinguished by their selectivities and differential regulation by immune cells. However, permeability increases measured in most studies are secondary to epithelial damage, which allows non-selective flux via the unrestricted pathway. Restoration of increased unrestricted pathway permeability requires mucosal healing. By contrast, tight junction barrier loss can be reversed by targeted interventions. Specific approaches are needed to restore pore pathway or leak pathway permeability increases. Recent studies have used preclinical disease models to demonstrate the potential of pore pathway or leak pathway barrier restoration in disease. In this Review, we focus on the two paracellular flux pathways that are dependent on the tight junction. We discuss the latest evidence that highlights tight junction components, structures and regulatory mechanisms, their impact on gut health and disease, and opportunities for therapeutic intervention.
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Affiliation(s)
- Arie Horowitz
- UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, Normandie University, Rouen, France
| | - Sandra D Chanez-Paredes
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Xenia Haest
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jerrold R Turner
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
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16
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Hashimoto Y, Greene C, Munnich A, Campbell M. The CLDN5 gene at the blood-brain barrier in health and disease. Fluids Barriers CNS 2023; 20:22. [PMID: 36978081 PMCID: PMC10044825 DOI: 10.1186/s12987-023-00424-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
The CLDN5 gene encodes claudin-5 (CLDN-5) that is expressed in endothelial cells and forms tight junctions which limit the passive diffusions of ions and solutes. The blood-brain barrier (BBB), composed of brain microvascular endothelial cells and associated pericytes and end-feet of astrocytes, is a physical and biological barrier to maintain the brain microenvironment. The expression of CLDN-5 is tightly regulated in the BBB by other junctional proteins in endothelial cells and by supports from pericytes and astrocytes. The most recent literature clearly shows a compromised BBB with a decline in CLDN-5 expression increasing the risks of developing neuropsychiatric disorders, epilepsy, brain calcification and dementia. The purpose of this review is to summarize the known diseases associated with CLDN-5 expression and function. In the first part of this review, we highlight the recent understanding of how other junctional proteins as well as pericytes and astrocytes maintain CLDN-5 expression in brain endothelial cells. We detail some drugs that can enhance these supports and are being developed or currently in use to treat diseases associated with CLDN-5 decline. We then summarise mutagenesis-based studies which have facilitated a better understanding of the physiological role of the CLDN-5 protein at the BBB and have demonstrated the functional consequences of a recently identified pathogenic CLDN-5 missense mutation from patients with alternating hemiplegia of childhood. This mutation is the first gain-of-function mutation identified in the CLDN gene family with all others representing loss-of-function mutations resulting in mis-localization of CLDN protein and/or attenuated barrier function. Finally, we summarize recent reports about the dosage-dependent effect of CLDN-5 expression on the development of neurological diseases in mice and discuss what cellular supports for CLDN-5 regulation are compromised in the BBB in human diseases.
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Affiliation(s)
- Yosuke Hashimoto
- Trinity College Dublin, Smurfit Institute of Genetics, Dublin, D02 VF25, Ireland.
| | - Chris Greene
- Trinity College Dublin, Smurfit Institute of Genetics, Dublin, D02 VF25, Ireland
| | - Arnold Munnich
- Institut Imagine, INSERM UMR1163, Université Paris Cité, Paris, F-75015, France
- Departments of Pediatric Neurology and Medical Genetics, Hospital Necker Enfants Malades, Université Paris Cité, Paris, F-75015, France
| | - Matthew Campbell
- Trinity College Dublin, Smurfit Institute of Genetics, Dublin, D02 VF25, Ireland.
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17
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Paz AA, González-Candia A. Potential pharmacological target of tight junctions to improve the BBB permeability in neonatal Hypoxic-Ischemic encephalopathy Diseases. Biochem Pharmacol 2023; 207:115356. [PMID: 36455671 DOI: 10.1016/j.bcp.2022.115356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
Neonatal encephalopathy (NE) is a pathological condition that describes a neurocognitive malfunction in the newborn that arises from fetal, peripartum, or intrapartum events of multifactorial nature, having a poor prognosis and accounting for an incidence of 5-8 per 1000 live births. Neonatal hypoxic-ischemic encephalopathy (HIE) is one of the most studied paradigms of NE, caused by a scarce cerebral perfusion and oxygen supply during perinatal life. The cerebral hypoxic-ischemic insult promotes a loss of permeability of the blood-brain barrier (BBB), an essential structural intermediary of blood-brain communication. This permeability disruption is associated with an increase in inflammatory cytokines, an increase of adhesion molecules, and oxidative stress which disturb the tight junction (TJ) performance and enable transcytosis and paracellular leakage, ultimately leading to death from brain cells. In this context, TJs proteins are essential to preserving the barrier mechanical stability and signaling that modulates the brain-blood vessel multicellular domains, known as neurovascular units (NVU). Recent studies have proposed different strategies with neuroprotective effects that allow for maintaining or restoring the integrity and permeability of the BBB. This review identifies and discusses regulator mechanisms and novel aspects of TJs in the BBB disruption induced by cerebral hypoxic insults during the perinatal period, evaluating potential pharmacological strategies to safeguard BBB integrity.
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Affiliation(s)
- Adolfo A Paz
- Institute of Health Sciences, University O'Higgins, Rancagua, Chile
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18
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ZO-1 Guides Tight Junction Assembly and Epithelial Morphogenesis via Cytoskeletal Tension-Dependent and -Independent Functions. Cells 2022; 11:cells11233775. [PMID: 36497035 PMCID: PMC9740252 DOI: 10.3390/cells11233775] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/08/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Formation and maintenance of tissue barriers require the coordination of cell mechanics and cell-cell junction assembly. Here, we combined methods to modulate ECM stiffness and to measure mechanical forces on adhesion complexes to investigate how tight junctions regulate cell mechanics and epithelial morphogenesis. We found that depletion of the tight junction adaptor ZO-1 disrupted junction assembly and morphogenesis in an ECM stiffness-dependent manner and led to a stiffness-dependant reorganisation of active myosin. Both junction formation and morphogenesis were rescued by inhibition of actomyosin contractility. ZO-1 depletion also impacted mechanical tension at cell-matrix and E-cadherin-based cell-cell adhesions. The effect on E-cadherin also depended on ECM stiffness and correlated with effects of ECM stiffness on actin cytoskeleton organisation. However, ZO-1 knockout also revealed tension-independent functions of ZO-1. ZO-1-deficient cells could assemble functional barriers at low tension, but their tight junctions remained corrupted with strongly reduced and discontinuous recruitment of junctional components. Our results thus reveal that reciprocal regulation between ZO-1 and cell mechanics controls tight junction assembly and epithelial morphogenesis, and that, in a second, tension-independent step, ZO-1 is required to assemble morphologically and structurally fully assembled and functionally normal tight junctions.
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19
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Multiciliated cells use filopodia to probe tissue mechanics during epithelial integration in vivo. Nat Commun 2022; 13:6423. [PMID: 36307428 PMCID: PMC9616887 DOI: 10.1038/s41467-022-34165-0] [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: 12/21/2021] [Accepted: 10/17/2022] [Indexed: 12/25/2022] Open
Abstract
During embryonic development, regeneration, and homeostasis, cells have to migrate and physically integrate into the target tissues where they ultimately execute their function. While much is known about the biochemical pathways driving cell migration in vivo, we are only beginning to understand the mechanical interplay between migrating cells and their surrounding tissue. Here, we reveal that multiciliated cell precursors in the Xenopus embryo use filopodia to pull at the vertices of the overlying epithelial sheet. This pulling is effectively used to sense vertex stiffness and identify the preferred positions for cell integration into the tissue. Notably, we find that pulling forces equip multiciliated cells with the ability to remodel the epithelial junctions of the neighboring cells, enabling them to generate a permissive environment that facilitates integration. Our findings reveal the intricate physical crosstalk at the cell-tissue interface and uncover previously unknown functions for mechanical forces in orchestrating cell integration.
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20
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Saito AC, Endo C, Fukazawa Y, Higashi T, Chiba H. Effects of TAMP family on the tight junction strand network and barrier function in epithelial cells. Ann N Y Acad Sci 2022; 1517:234-250. [PMID: 36069127 DOI: 10.1111/nyas.14889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Occludin, tricellulin, and marvelD3 belong to the tight junction (TJ)-associated MARVEL protein family. Occludin and tricellulin jointly contribute to TJ strand branching point formation and epithelial barrier maintenance. However, whether marvelD3 has the same function remains unclear. Furthermore, the roles of the carboxy-terminal cytoplasmic tail, which is conserved in occludin and tricellulin, on the regulation of TJ strand morphology have not yet been explored in epithelial cells. We established tricellulin/occludin/marveld3 triple-gene knockout (tKO) MDCK II cells and evaluated the roles of marvelD3 in the TJ strand structure and barrier function using MDCK II cells and a mathematical model. The complexity of TJ strand networks and paracellular barrier did not change in tKO cells compared to that in tricellulin/occludin double-gene knockout (dKO) cells. Exogenous marvelD3 expression in dKO cells did not increase the complexity of TJ strand networks and epithelial barrier tightness. The expression of the carboxy-terminal truncation mutant of tricellulin restored the barrier function in the dKO cells, whereas occludin lacking the carboxy-terminal cytoplasmic tail was not expressed on the plasma membrane. These data suggest that marvelD3 does not affect the morphology of TJ strands and barrier function in MDCK II cells and that the carboxy-terminal cytoplasmic tail of tricellulin is dispensable for barrier improvement.
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Affiliation(s)
- Akira C Saito
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Chisato Endo
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Yugo Fukazawa
- Division of Brain Structure and Function, Faculty of Medical Science, Life Science Innovation Center, University of Fukui, Fukui, Japan
| | - Tomohito Higashi
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
| | - Hideki Chiba
- Department of Basic Pathology, Fukushima Medical University, Fukushima, Japan
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21
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Iwanaga T, Takahashi-Iwanaga H. Disposal of intestinal apoptotic epithelial cells and their fate via divergent routes. Biomed Res 2022; 43:59-72. [PMID: 35718446 DOI: 10.2220/biomedres.43.59] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Gut epithelial cells are characterized by rapid, constant cell renewal. The disposal of aging epithelial cells around the villus tips of the small intestine occurs so regularly that it has been regarded as a consequence of well-controlled cell death, designated as apoptosis. However, the notion of live cell extrusion in the intestine has been intensively built among researchers, and the disposal processes of effete epithelial cells display species and regional differences. Chemical mediators and mechanical forces rising from surrounding cells contribute to the regulated cell replacement. Cytotoxic intraepithelial lymphocytes and lamina propria macrophages play a leading role in the selection of disposal cells and their extrusion to maintain fully the epithelial homeostasis in tandem with the dynamic reconstruction of junctional devices. Lymphocyte-mediated cell killing is predominant in the mouse and rat, while the disposal of epithelial cells in the guinea pig, monkey, and human is characterized by active phagocytosis by subepithelially gathering macrophages. The fenestrated basement membrane formed by immune cells supports their involvement and explains species differences in the disposal of epithelial cells. Via these fenestrations, macrophages and dendritic cells can engulf apoptotic epithelial cells and debris and convey substantial information to regional lymph nodes. In this review, we attempt to focus on morphological aspects concerning the apoptosis and disposal process of effete epithelial cells; in vitro or ex vivo analyses using cultured monolayer has become predominant in recent studies concerning the exfoliation of apoptotic enterocytes. Furthermore, we give attention to their species differences, which is controversial but crucial to our understanding.
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Affiliation(s)
- Toshihiko Iwanaga
- Department of Anatomy, Hokkaido University Graduate School of Medicine
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22
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Kuo WT, Odenwald MA, Turner JR, Zuo L. Tight junction proteins occludin and ZO-1 as regulators of epithelial proliferation and survival. Ann N Y Acad Sci 2022; 1514:21-33. [PMID: 35580994 PMCID: PMC9427709 DOI: 10.1111/nyas.14798] [Citation(s) in RCA: 96] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Epithelial cells are the first line of mucosal defense. In the intestine, a single layer of epithelial cells must establish a selectively permeable barrier that supports nutrient absorption and waste secretion while preventing the leakage of potentially harmful luminal materials. Key to this is the tight junction, which seals the paracellular space and prevents unrestricted leakage. The tight junction is a protein complex established by interactions between members of the claudin, zonula occludens, and tight junction-associated MARVEL protein (TAMP) families. Claudins form the characteristic tight junction strands seen by freeze-fracture microscopy and create paracellular channels, but the functions of ZO-1 and occludin, founding members of the zonula occludens and TAMP families, respectively, are less well defined. Recent studies have revealed that these proteins have essential noncanonical (nonbarrier) functions that allow them to regulate epithelial apoptosis and proliferation, facilitate viral entry, and organize specialized epithelial structures. Surprisingly, neither is required for intestinal barrier function or overall health in the absence of exogenous stressors. Here, we provide a brief overview of ZO-1 and occludin canonical (barrier-related) functions, and a more detailed examination of their noncanonical functions.
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Affiliation(s)
- Wei-Ting Kuo
- Graduate Institute of Oral Biology, National Taiwan University, Taipei, Taiwan.,Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | | | - Jerrold R Turner
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Li Zuo
- Laboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA.,Anhui Medical University, Hefei, China
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23
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Cho Y, Haraguchi D, Shigetomi K, Matsuzawa K, Uchida S, Ikenouchi J. Tricellulin secures the epithelial barrier at tricellular junctions by interacting with actomyosin. J Biophys Biochem Cytol 2022; 221:213005. [PMID: 35148372 PMCID: PMC8847807 DOI: 10.1083/jcb.202009037] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/21/2021] [Accepted: 01/04/2022] [Indexed: 01/04/2023] Open
Abstract
The epithelial cell sheet functions as a barrier to prevent invasion of pathogens. It is necessary to eliminate intercellular gaps not only at bicellular junctions, but also at tricellular contacts, where three cells meet, to maintain epithelial barrier function. To that end, tight junctions between adjacent cells must associate as closely as possible, particularly at tricellular contacts. Tricellulin is an integral component of tricellular tight junctions (tTJs), but the molecular mechanism of its contribution to the epithelial barrier function remains unclear. In this study, we revealed that tricellulin contributes to barrier formation by regulating actomyosin organization at tricellular junctions. Furthermore, we identified α-catenin, which is thought to function only at adherens junctions, as a novel binding partner of tricellulin. α-catenin bridges tricellulin attachment to the bicellular actin cables that are anchored end-on at tricellular junctions. Thus, tricellulin mobilizes actomyosin contractility to close the lateral gap between the TJ strands of the three proximate cells that converge on tricellular junctions.
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Affiliation(s)
- Yuma Cho
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka, Japan
| | - Daichi Haraguchi
- Department of Advanced Information Technology, Kyushu University, Fukuoka, Japan
| | - Kenta Shigetomi
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka, Japan
| | - Kenji Matsuzawa
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka, Japan
| | - Seiichi Uchida
- Department of Advanced Information Technology, Kyushu University, Fukuoka, Japan
| | - Junichi Ikenouchi
- Department of Biology, Faculty of Sciences, Kyushu University, Fukuoka, Japan
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Shimada H, Kohno T, Konno T, Okada T, Saito K, Shindo Y, Kikuchi S, Tsujiwaki M, Ogawa M, Matsuura M, Saito T, Kojima T. The Roles of Tricellular Tight Junction Protein Angulin-1/Lipolysis-Stimulated Lipoprotein Receptor (LSR) in Endometriosis and Endometrioid-Endometrial Carcinoma. Cancers (Basel) 2021; 13:6341. [PMID: 34944960 PMCID: PMC8699113 DOI: 10.3390/cancers13246341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 12/04/2021] [Accepted: 12/05/2021] [Indexed: 12/11/2022] Open
Abstract
Tight junction proteins play roles beyond permeability barriers functions and control cell proliferation and differentiation. The relation between tight junctions and the signal transduction pathways affects cell growth, invasion and migration. Abnormality of tight junction proteins closely contributes to epithelial mesenchymal transition (EMT) and malignancy of various cancers. Angulin-1/lipolysis-stimulated lipoprotein receptor (LSR) forms tricellular contacts that has a barrier function. Downregulation of angulin-1/LSR correlates with the malignancy in various cancers, including endometrioid-endometrial carcinoma (EEC). These alterations have been shown to link to not only multiple signaling pathways such as Hippo/YAP, HDAC, AMPK, but also cell metabolism in ECC cell line Sawano. Moreover, loss of angulin-1/LSR upregulates claudin-1, and loss of apoptosis stimulating p53 protein 2 (ASPP2) downregulates angulin-1/LSR. Angulin-1/LSR and ASPP2 concentrate at both midbody and centrosome in cytokinesis. In EEC tissues, angulin-1/LSR and ASPP2 are reduced and claudin-2 is overexpressed during malignancy, while in the tissues of endometriosis changes in localization of angulin-1/LSR and claudin-2 are seen. This review highlights how downregulation of angulin-1/LSR promotes development of endometriosis and EEC and discusses about the roles of angulin-1/LSR and its related proteins, including claudins and ASPP2.
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Affiliation(s)
- Hiroshi Shimada
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
- Departments of Obstetrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (M.O.); (M.M.); (T.S.)
| | - Takayuki Kohno
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
| | - Takumi Konno
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
| | - Tadahi Okada
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
- Departments of Obstetrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (M.O.); (M.M.); (T.S.)
| | - Kimihito Saito
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
- Departments of Obstetrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (M.O.); (M.M.); (T.S.)
| | - Yuma Shindo
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
| | - Shin Kikuchi
- Department of Anatomy, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan;
| | - Mitsuhiro Tsujiwaki
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan;
| | - Marie Ogawa
- Departments of Obstetrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (M.O.); (M.M.); (T.S.)
| | - Motoki Matsuura
- Departments of Obstetrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (M.O.); (M.M.); (T.S.)
| | - Tsuyoshi Saito
- Departments of Obstetrics, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (M.O.); (M.M.); (T.S.)
| | - Takashi Kojima
- Department of Cell Science, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo 060-8556, Japan; (H.S.); (T.K.); (T.O.); (K.S.); (Y.S.)
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Hashimoto Y, Campbell M, Tachibana K, Okada Y, Kondoh M. Claudin-5: A Pharmacological Target to Modify the Permeability of the Blood-Brain Barrier. Biol Pharm Bull 2021; 44:1380-1390. [PMID: 34602546 DOI: 10.1248/bpb.b21-00408] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Claudin-5 is the dominant tight junction protein in brain endothelial cells and exclusively limits the paracellular permeability of molecules larger than 400 Da across the blood-brain barrier (BBB). Its pathological impairment or sustained down-regulation has been shown to lead to the progression of psychiatric and neurological disorders, whereas its expression under physiological conditions prevents the passage of drugs across the BBB. While claudin-5 enhancers could potentially act as vascular stabilizers to treat neurological diseases, claudin-5 inhibitors could function as delivery systems to enhance the brain uptake of hydrophilic small-molecular-weight drugs. Therefore, the effects of claudin-5 manipulation on modulating the BBB in different neurological diseases requires further examination. To manipulate claudin-5 expression levels and function, several claudin-5 modulating molecules have been developed. In this review, we first describe the molecular, cellular and pathological aspects of claudin-5 to highlight the mechanisms of claudin-5 enhancers/inhibitors. We then discuss recently developed claudin-5 enhancers/inhibitors and new methods to discover these molecules.
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Affiliation(s)
| | | | | | - Yoshiaki Okada
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Masuo Kondoh
- Graduate School of Pharmaceutical Sciences, Osaka University
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