1
|
Sugihara N, Okada Y, Tomioka A, Ito S, Tanemoto R, Nishii S, Mizoguchi A, Inaba K, Hanawa Y, Horiuchi K, Wada A, Akita Y, Higashiyama M, Kurihara C, Komoto S, Tomita K, Hokari R. Probiotic Yeast from Miso Ameliorates Stress-Induced Visceral Hypersensitivity by Modulating the Gut Microbiota in a Rat Model of Irritable Bowel Syndrome. Gut Liver 2024; 18:465-475. [PMID: 37291901 PMCID: PMC11096913 DOI: 10.5009/gnl220100] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 12/18/2022] [Accepted: 01/26/2023] [Indexed: 06/10/2023] Open
Abstract
Background/Aims Recent studies indicate that probiotics, which have attracted attention as a treatment for irritable bowel syndrome, affect intestinal homeostasis. In this study, we investigated whether Zygosaccharomyces sapae (strain I-6), a probiotic yeast isolated from miso (a traditional Japanese fermented food), could improve irritable bowel syndrome symptoms. Methods Male Wistar rats were exposed to water avoidance stress (WAS). The number of defecations during WAS and the visceral hypersensitivity before and after WAS were evaluated using colorectal distension. Tight junction changes were assessed by Western blotting. Some rats were fed with strain I-6 or β-glucan from strain I-6. Changes in the intestinal microbiota were analyzed. The effect of fecal microbiota transplantation after WAS was evaluated similarly. Caco-2 cells were stimulated with interleukin-1β and tight junction changes were investigated after coculture with strain I-6. Results The increased number of stool pellets and visceral hypersensitivity induced by WAS were suppressed by administering strain I-6. The decrease in tight junction protein occludin by WAS was reversed by the administration of strain I-6. β-Glucan from strain I-6 also suppressed those changes induced by WAS. In the rat intestinal microbiota, treatment with strain I-6 altered the β-diversity and induced changes in bacterial occupancy. Upon fecal microbiota transplantation, some symptoms caused by WAS were ameliorated. Conclusions These results suggest that traditional fermented foods such as miso in Japan are valuable sources of probiotic yeast candidates, which may be useful for preventing and treating stress-induced visceral hypersensitivity.
Collapse
Affiliation(s)
- Nao Sugihara
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yoshikiyo Okada
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Akira Tomioka
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Suguru Ito
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Rina Tanemoto
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Shin Nishii
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Akinori Mizoguchi
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kenichi Inaba
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yoshinori Hanawa
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kazuki Horiuchi
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Akinori Wada
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Yoshihiro Akita
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Masaaki Higashiyama
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Chie Kurihara
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Shunsuke Komoto
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Kengo Tomita
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| | - Ryota Hokari
- Department of Internal Medicine, National Defense Medical College, Tokorozawa, Japan
| |
Collapse
|
2
|
Hu X, Yuan X, Zhang G, Song H, Ji P, Guo Y, Liu Z, Tian Y, Shen R, Wang D. The intestinal epithelial-macrophage-crypt stem cell axis plays a crucial role in regulating and maintaining intestinal homeostasis. Life Sci 2024; 344:122452. [PMID: 38462226 DOI: 10.1016/j.lfs.2024.122452] [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: 11/23/2023] [Revised: 01/18/2024] [Accepted: 01/18/2024] [Indexed: 03/12/2024]
Abstract
The intestinal tract plays a vital role in both digestion and immunity, making its equilibrium crucial for overall health. This equilibrium relies on the dynamic interplay among intestinal epithelial cells, macrophages, and crypt stem cells. Intestinal epithelial cells play a pivotal role in protecting and regulating the gut. They form vital barriers, modulate immune responses, and engage in pathogen defense and cytokine secretion. Moreover, they supervise the regulation of intestinal stem cells. Macrophages, serving as immune cells, actively influence the immune response through the phagocytosis of pathogens and the release of cytokines. They also contribute to regulating intestinal stem cells. Stem cells, known for their self-renewal and differentiation abilities, play a vital role in repairing damaged intestinal epithelium and maintaining homeostasis. Although research has primarily concentrated on the connections between epithelial and stem cells, interactions with macrophages have been less explored. This review aims to fill this gap by exploring the roles of the intestinal epithelial-macrophage-crypt stem cell axis in maintaining intestinal balance. It seeks to unravel the intricate dynamics and regulatory mechanisms among these essential players. A comprehensive understanding of these cell types' functions and interactions promises insights into intestinal homeostasis regulation. Moreover, it holds potential for innovative approaches to manage conditions like radiation-induced intestinal injury, inflammatory bowel disease, and related diseases.
Collapse
Affiliation(s)
- Xiaohui Hu
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Xinyi Yuan
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Guokun Zhang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Haoyun Song
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Pengfei Ji
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Yanan Guo
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Zihua Liu
- Lanzhou University Second Hospital, Lanzhou University, Lanzhou, Gansu Province 73000, China
| | - Yixiao Tian
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Rong Shen
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China.
| | - Degui Wang
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province 73000, China; NHC Key Laboratory of Diagnosis and Therapy of Gastrointestinal Tumor, Lanzhou, Gansu Province 730000, China.
| |
Collapse
|
3
|
He JY, Li J, Zhang YY, He HB, He YM, Xu DX, Wang X, Wu HY, Zhang JH, Jahid H, Sadia A, Yu HF, Wang JZ, Zou K. Tormentic acid, a triterpenoid isolated from the fruits of Chaenomeles speciose, protected indomethacin-induced gastric mucosal lesion via modulating miR-139 and the CXCR4/CXCL12/PLC/PKC/Rho a/MLC pathway. PHARMACEUTICAL BIOLOGY 2023; 61:1343-1363. [PMID: 37623313 PMCID: PMC10461523 DOI: 10.1080/13880209.2023.2249526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 07/31/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023]
Abstract
CONTEXT Tormentic acid (TA), an effective triterpenoid isolated from Chaenomeles speciosa (Sweet) Nakai (Rosaceae) fruits, exerts an effective treatment for gastric damage. OBJECTIVE To investigate the gastroprotective effect of TA on indomethacin (IND) damaged GES-1 cells and rats, and explore potential mechanisms. MATERIALS AND METHODS TA concentrations of 1.563-25 µM were used. Cell proliferation, apoptosis and migration were performed using MTT, colony formation, wound healing, migration, Hoechst staining assays. SD rats were divided into control, IND, TA (1, 2 and 4 mg/kg) + IND groups, once a day for 21 continuous days. Twenty-four hours after the last administration, all groups except the control group were given IND (100 mg/kg) by gavage. Gastric juice parameters, gastric ulcer, gastric blood flow (GBF), blood biochemical parameters and cytokine analysis and gastric mucosal histopathology were detected for 2 h and 6 h after IND oral administration. The mRNA and protein expression of miR-139 and the CXCR4/CXCL12/PLC/PKC/Rho A/MLC pathway were analyzed in the IND-damaged GES-1 cells and gastric tissue of rats. RESULTS TA might ameliorate the gastric mucosal injury by accelerating the IND-damaged GES-1 cell proliferation and migration, ameliorating GBF, ulcer area and pathologic changes, the redox system and cytokine levels, the gastric juice parameters, elevating the gastric pH in IND damaged rats; suppressed miR-139 mRNA expression, elevated CXCR4 and CXCL12 mRNA and protein expression, p-PLC, p-PKC, Rho A, MLCK and p-MLC protein expression. DISCUSSION AND CONCLUSIONS TA may have potential use as a clinical drug candidate for gastric mucosal lesion treatment.
Collapse
Affiliation(s)
- Jun-Yu He
- Department of Clinical Medicine, College of Basic Medical Science, China Three Gorges University, Yichang, P.R. China
| | - Jie Li
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| | - Yuan-Yuan Zhang
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| | - Hai-Bo He
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Shiyan, P.R. China
| | - Yu-Min He
- Department of Clinical Medicine, College of Basic Medical Science, China Three Gorges University, Yichang, P.R. China
| | - Dao-Xiang Xu
- Department of Gastroenterology, Seventh People’s Hospital of Wenzhou, Wenzhou, P.R. China
| | - Xiao Wang
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| | - Hao-Yang Wu
- Department of Clinical Medicine, College of Basic Medical Science, China Three Gorges University, Yichang, P.R. China
| | - Ji-Hong Zhang
- Department of Gastroenterology, Chinese Medicine Clinical Medical College & Hubei Clinical Research Center for Functional Digestive Diseases of Traditional Chinese Medicine, China Three Gorges University, Yichang, P.R. China
| | - Hasan Jahid
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| | - Akter Sadia
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| | - Hui-Fan Yu
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Shiyan, P.R. China
| | - Jun-Zhi Wang
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| | - Kun Zou
- Yichang Key Laboratory of Development and Utilization of Health Products with Drug Food Homology & Hubei Key Laboratory of Natural Products Research and Development, China Three Gorges University, Yichang, P.R. China
| |
Collapse
|
4
|
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: 56] [Impact Index Per Article: 56.0] [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.
Collapse
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.
| |
Collapse
|
5
|
Prostaglandin transporter PGT as a new pharmacological target in the prevention of inflammatory cytokine-induced injury in renal proximal tubular HK-2 cells. Life Sci 2023; 313:121260. [PMID: 36473541 DOI: 10.1016/j.lfs.2022.121260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 11/20/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
|
6
|
Xue Z, Zeng J, Li Y, Meng B, Gong X, Zhao Y, Dai X. Proteomics reveals that cell density could affect the efficacy of drug treatment. Biochem Biophys Rep 2022; 33:101403. [PMID: 36561432 PMCID: PMC9763681 DOI: 10.1016/j.bbrep.2022.101403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/22/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
In vitro cell biology study plays a fundamental role in biological and drug development research, but the repeatability and accuracy of cell studies remain to be low. Various uncertainties during the cell culture process could introduce bias into drug research. In this study, we evaluate the potential effects and underlying mechanisms induced by cell number differences in the cell seeding process. Normally, drug experiments are initiated 24 h after cell seeding, and the difference in the cell number at the time of inoculation leads to the difference in cell confluence (cell density) when drug research is conducted. While cell confluence is closely related to intercellular communication, surface protein interaction, cell autocrine as well as paracrine protein expression of cells, it might have a potential impact on the effect of biological studies such as drug treatment. This study used proteomics technology to comprehensively explore the different protein expression patterns between cells with different confluences. Due to the high sensitivity and high throughput of liquid chromatography-mass spectrometry (LC-MS/MS) detection, it was hired to evaluate the protein expression differences of Hep3B cells with 3 different confluences (30%, 50%, and 70%). The differential expressed proteins were analyzed by the Reactome pathway and the Gene Ontology (GO) pathway. Significant differences were identified across three confluences in terms of the number of proteins identified, the protein expression pattern, and the expression level of certain KEGG pathways. We found that those proteins involved in the cell cycle pathway were differently expressed: the higher the cell confluence, the higher these proteins expressed. A cell cycle inhibitor palbociclib was selected to further verify this observation. Palbociclib in the same dose was applied to cells with different confluence, the results indicated that the growth inhibition effect of palbociclib increases along with the increasing trend of cell cycle protein expression. The result indicated that cell density did influence the effect of drug treatment. Furthermore, three other drugs, cisplatin, paclitaxel, and imatinib, were used to treat the three liver cancer cell lines Hep3B, SUN387, and MHCC97, and a similar observation was obtained that drug effect would be different when the cell confluences were different. Therefore, selecting an appropriate number of cells for plating is vitally important at the beginning of a drug study.
Collapse
Affiliation(s)
- Zhichao Xue
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China
| | - Jiaming Zeng
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China,Shenyang University of Chemical Technology, College of Chemical Engineering, Shenyang, 110142, PR China
| | - Yongshu Li
- Shenzhen Institute for Technology Innovation, National Institute of Metrology, Shenzhen, 518055, PR China
| | - Bo Meng
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China
| | - Xiaoyun Gong
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China
| | - Yang Zhao
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China
| | - Xinhua Dai
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, PR China,Corresponding author.
| |
Collapse
|
7
|
Evaluation of rapid transepithelial electrical resistance (TEER) measurement as a metric of kidney toxicity in a high-throughput microfluidic culture system. Sci Rep 2022; 12:13182. [PMID: 35915212 PMCID: PMC9343646 DOI: 10.1038/s41598-022-16590-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 07/12/2022] [Indexed: 11/15/2022] Open
Abstract
Rapid non-invasive kidney-specific readouts are essential to maximizing the potential of microfluidic tissue culture platforms for drug-induced nephrotoxicity screening. Transepithelial electrical resistance (TEER) is a well-established technique, but it has yet to be evaluated as a metric of toxicity in a kidney proximal tubule (PT) model that recapitulates the high permeability of the native tissue and is also suitable for high-throughput screening. We utilized the PREDICT96 high-throughput microfluidic platform, which has rapid TEER measurement capability and multi-flow control, to evaluate the utility of TEER sensing for detecting cisplatin-induced toxicity in a human primary PT model under both mono- and co-culture conditions as well as two levels of fluid shear stress (FSS). Changes in TEER of PT-microvascular co-cultures followed a dose-dependent trend similar to that demonstrated by lactate dehydrogenase (LDH) cytotoxicity assays and were well-correlated with tight junction coverage after cisplatin exposure. Additionally, cisplatin-induced changes in TEER were detectable prior to increases in cell death in co-cultures. PT mono-cultures had a less differentiated phenotype and were not conducive to toxicity monitoring with TEER. The results of this study demonstrate that TEER has potential as a rapid, early, and label-free indicator of toxicity in microfluidic PT-microvascular co-culture models.
Collapse
|
8
|
Barbeau S, Joushomme A, Chappe Y, Cardouat G, Baudrimont I, Freund-Michel V, Guibert C, Marthan R, Berger P, Vacher P, Percherancier Y, Quignard JF, Ducret T. Cell Confluence Modulates TRPV4 Channel Activity in Response to Hypoxia. Biomolecules 2022; 12:biom12070954. [PMID: 35883510 PMCID: PMC9313184 DOI: 10.3390/biom12070954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/10/2022] [Accepted: 06/14/2022] [Indexed: 12/13/2022] Open
Abstract
Transient receptor potential vanilloid 4 (TRPV4) is a polymodal Ca2+-permeable channel involved in various hypoxia-sensitive pathophysiological phenomena. Different tools are available to study channel activity, requiring cells to be cultured at specific optimal densities. In the present study, we examined if cell density may influence the effect of hypoxia on TRPV4 activity. Transiently TRPV4-transfected HEK293T cells were seeded at low or high densities corresponding to non-confluent or confluent cells, respectively, on the day of experiments, and cultured under in vitro normoxia or hypoxia. TRPV4-mediated cytosolic Ca2+ responses, single-channel currents, and Ca2+ influx through the channel were measured using Ca2+ imaging/microspectrofluorimetric assay, patch-clamp, and Bioluminescence Resonance Energy Transfer (BRET), respectively. TRPV4 plasma membrane translocation was studied using confocal microscopy, biotinylation of cell surface proteins, and BRET. Our results show that hypoxia exposure has a differential effect on TRPV4 activation depending on cell confluence. At low confluence levels, TRPV4 response is increased in hypoxia, whereas at high confluence levels, TRPV4 response is strongly inhibited, due to channel internalization. Thus, cell density appears to be a crucial parameter for TRPV4 channel activity.
Collapse
Affiliation(s)
- Solène Barbeau
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Alexandre Joushomme
- Laboratoire de l’Intégration du Matériau au Système, UMR5518, Univ. Bordeaux, F-33400 Talence, France; (A.J.); (Y.C.); (Y.P.)
- CNRS (Centre National de la Recherche Scientifique), Laboratoire de L’integration du Matériau au Système, UMR5518, F-33400 Talence, France
| | - Yann Chappe
- Laboratoire de l’Intégration du Matériau au Système, UMR5518, Univ. Bordeaux, F-33400 Talence, France; (A.J.); (Y.C.); (Y.P.)
- CNRS (Centre National de la Recherche Scientifique), Laboratoire de L’integration du Matériau au Système, UMR5518, F-33400 Talence, France
| | - Guillaume Cardouat
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Isabelle Baudrimont
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Véronique Freund-Michel
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Christelle Guibert
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Roger Marthan
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
- CHU (Centre Hospitalier Universitaire) Bordeaux, Service d’Exploration Fonctionnelle Respiratoire, F-33600 Pessac, France
| | - Patrick Berger
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
- CHU (Centre Hospitalier Universitaire) Bordeaux, Service d’Exploration Fonctionnelle Respiratoire, F-33600 Pessac, France
| | - Pierre Vacher
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Yann Percherancier
- Laboratoire de l’Intégration du Matériau au Système, UMR5518, Univ. Bordeaux, F-33400 Talence, France; (A.J.); (Y.C.); (Y.P.)
- CNRS (Centre National de la Recherche Scientifique), Laboratoire de L’integration du Matériau au Système, UMR5518, F-33400 Talence, France
| | - Jean-François Quignard
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
| | - Thomas Ducret
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33600 Pessac, France; (S.B.); (G.C.); (I.B.); (V.F.-M.); (C.G.); (R.M.); (P.B.); (P.V.); (J.-F.Q.)
- INSERM (Institut National de la Santé Et de la Recherche Médicale), Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, F-33600 Pessac, France
- Correspondence:
| |
Collapse
|
9
|
Matrix Metalloproteinase-10 in Kidney Injury Repair and Disease. Int J Mol Sci 2022; 23:ijms23042131. [PMID: 35216251 PMCID: PMC8877639 DOI: 10.3390/ijms23042131] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 12/13/2022] Open
Abstract
Matrix metalloproteinase-10 (MMP-10) is a zinc-dependent endopeptidase with the ability to degrade a broad spectrum of extracellular matrices and other protein substrates. The expression of MMP-10 is induced in acute kidney injury (AKI) and chronic kidney disease (CKD), as well as in renal cell carcinoma (RCC). During the different stages of kidney injury, MMP-10 may exert distinct functions by cleaving various bioactive substrates including heparin-binding epidermal growth factor (HB-EGF), zonula occludens-1 (ZO-1), and pro-MMP-1, -7, -8, -9, -10, -13. Functionally, MMP-10 is reno-protective in AKI by promoting HB-EGF-mediated tubular repair and regeneration, whereas it aggravates podocyte dysfunction and proteinuria by disrupting glomerular filtration integrity via degrading ZO-1. MMP-10 is also involved in cancerous invasion and emerges as a promising therapeutic target in patients with RCC. As a secreted protein, MMP-10 could be detected in the circulation and presents an inverse correlation with renal function. Due to the structural similarities between MMP-10 and the other MMPs, development of specific inhibitors targeting MMP-10 is challenging. In this review, we summarize our current understanding of the role of MMP-10 in kidney diseases and discuss the potential mechanisms of its actions.
Collapse
|
10
|
Kumar B, Ahmad R, Giannico GA, Zent R, Talmon GA, Harris RC, Clark PE, Lokeshwar V, Dhawan P, Singh AB. Claudin-2 inhibits renal clear cell carcinoma progression by inhibiting YAP-activation. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:77. [PMID: 33622361 PMCID: PMC7901196 DOI: 10.1186/s13046-021-01870-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 02/08/2021] [Indexed: 12/28/2022]
Abstract
Background Claudin-2 expression is upregulated in multiple cancers and promotes cancer malignancy. Remarkably, the regulation of claudin-2 expression in kidney cell lines contrasts its reported regulation in other organs. However, claudin-2 role in renal clear cell carcinoma (RCC) remains unknown despite its predominant expression in the proximal tubular epithelium (PTE), the site of RCC origin. Methods Publicly available and independent patient databases were examined for claudin-2 association with RCC. The novel protein function was validated in vitro and in vivo by gain or loss of function assays. Mechanistic results were concluded by Mass spectroscopy, immunoprecipitation and mutational studies, and functional evaluations. Results We show that the significant decrease in claudin-2 expression characterized PTE cells and Ex-vivo cultured mouse kidney subjected to dedifferentiation. Inhibition of claudin-2 was enough to induce mesenchymal plasticity and invasive mobility in these models. Further, a progressive loss of claudin-2 expression associated with the RCC progression and poor patient survival. Overexpression of claudin-2 in RCC-derived cancer cells inhibited tumorigenic abilities and xenograft tumor growth. These data supported a novel tumor-suppressive role of claudin-2 in RCC. Mechanistic insights further revealed that claudin-2 associates with YAP-protein and modulates its phosphorylation (S127) and nuclear expression. The tumor suppressive effects of claudin-2 expression were lost upon deletion of its PDZ-binding motif emphasizing the critical role of the PDZ-domain in claudin-2 interaction with YAP in regulating RCC malignancy. Conclusions Our results demonstrate a novel kidney specific tumor suppressive role for claudin-2 protein and further demonstrate that claudin-2 co-operates with the YAP signaling in regulating the RCC malignancy. Supplementary Information The online version contains supplementary material available at 10.1186/s13046-021-01870-5.
Collapse
Affiliation(s)
- Balawant Kumar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Rizwan Ahmad
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA
| | - Giovanna A Giannico
- Department of Pathology, Microbiology and Immunology, Vanderbilt Medical Center, Nashville, TN, USA
| | - Roy Zent
- Department of Medicine, Vanderbilt Medical Center, Nashville, TN, USA
| | - Geoffrey A Talmon
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Raymond C Harris
- Department of Medicine, Vanderbilt Medical Center, Nashville, TN, USA
| | | | - Vinata Lokeshwar
- Department of Biochemistry and Molecular Biology, Augusta University, Augusta, GA, USA
| | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA.,Member, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA.,VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA
| | - Amar B Singh
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA. .,Member, Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, 985870 Nebraska Medical Center, Omaha, NE, 68198-5870, USA. .,VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA.
| |
Collapse
|
11
|
Anwer S, Branchard E, Dan Q, Dan A, Szászi K. Tumor necrosis factor-α induces claudin-3 upregulation in kidney tubular epithelial cells through NF-κB and CREB1. Am J Physiol Cell Physiol 2021; 320:C495-C508. [PMID: 33439776 DOI: 10.1152/ajpcell.00185.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Claudins are essential for tight junction formation and paracellular transport, and they affect key cellular events including proliferation and migration. The properties of tight junctions are dynamically modulated by a variety of inputs. We previously showed that the inflammatory cytokine tumor necrosis factor-α (TNFα), a major pathogenic factor in kidney disease, alters epithelial permeability by affecting the expression of claudin-1, -2, and -4 in kidney tubular cells. Here, we explored the effect of TNFα on claudin-3 (Cldn-3), a ubiquitous barrier-forming protein. We found that TNFα elevated Cldn-3 protein expression in tubular epithelial cells (LLC-PK1 and IMCD3) as early as 3 h post treatment. Bafilomycin A and bortezomib, inhibitors of lysosomal and proteasomes, respectively, reduced Cldn-3 degradation. However, TNFα caused a strong upregulation of Cldn-3 in the presence of bafilomycin, suggesting an effect independent from lysosomes. Blocking protein synthesis using cycloheximide prevented Cldn-3 upregulation by TNFα, verifying the contribution of de novo Cldn-3 synthesis. Indeed, TNFα elevated Cldn-3 mRNA levels at early time points. Using pharmacological inhibitors and siRNA-mediated silencing, we determined that the effect of TNFα on Cldn-3 was mediated by extracellular signal regulated kinase (ERK)-dependent activation of NF-κB and PKA-induced activation of CREB1. These two pathways were turned on by TNFα in parallel and both were required for the upregulation of Cldn-3. Because Cldn-3 was suggested to modulate cell migration and epithelial-mesenchymal transition (EMT), and TNFα was shown to affect these processes, Cldn-3 upregulation may modulate regeneration of the tubules following injury.
Collapse
Affiliation(s)
- Shaista Anwer
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada
| | - Emily Branchard
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada
| | - Qinghong Dan
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada
| | - Angela Dan
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada
| | - Katalin Szászi
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Ontario, Canada.,Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
12
|
Smith N, Saunders D, Lerner M, Zalles M, Mamedova N, Cheong D, Mohammadi E, Yuan T, Luo Y, Hurst RE, Greenwood-Van Meerveld B, Towner RA. In vivo and ex vivo assessment of bladder hyper-permeability and using molecular targeted magnetic resonance imaging to detect claudin-2 in a mouse model for interstitial cystitis. PLoS One 2020; 15:e0239282. [PMID: 33095778 PMCID: PMC7584247 DOI: 10.1371/journal.pone.0239282] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 09/02/2020] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES To determine if the URO-MCP-1 mouse model for bladder IC/BPS is associated with in vivo bladder hyper-permeability, as measured by contrast-enhanced MRI (CE-MRI), and assess whether molecular-targeted MRI (mt-MRI) can visualize in vivo claudin-2 expression as a result of bladder hyper-permeability. Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic, painful condition of the bladder that affects primarily women. It is known that permeability plays a substantial role in IC/BPS. Claudins are tight junction membrane proteins that are expressed in epithelia and endothelia and form paracellular barriers and pores that determine tight junction permeability. Claudin-2 is a molecular marker that is associated with increased hyperpermeability in the urothelium. MATERIALS AND METHODS CE-MRI was used to measure bladder hyper-permeability in the URO-MCP-1 mice. A claudin-2-specific mt-MRI probe was used to assess in vivo levels of claudin-2. The mt-MRI probe consists of an antibody against claudin-2 conjugated to albumin that had Gd-DTPA (gadolinium diethylenetriamine pentaacetate) and biotin attached. Verification of the presence of the mt-MRI probe was done by targeting the biotin moiety for the probe with streptavidin-horse radish peroxidase (SA-HRP). Trans-epithelial electrical resistance (TEER) was also used to assess bladder permeability. RESULTS The URO-MCP-1 mouse model for IC/BPS was found to have a significant increase in bladder permeability, following liposaccharide (LPS) exposure, compared to saline-treated controls. mt-MRI- and histologically-detectable levels of the claudin-2 probe were found to increase with LPS -induced bladder urothelial hyper-permeability in the URO-MCP-1 IC mouse model. Levels of protein expression for claudin-2 were confirmed with immunohistochemistry and immunofluorescence imaging. Claudin-2 was also found to highly co-localize with zonula occlidens-1 (ZO-1), a tight junction protein. CONCLUSION The combination of CE-MRI and TEER approaches were able to demonstrate hyper-permeability, a known feature associated with some IC/BPS patients, in the LPS-exposed URO-MCP-1 mouse model. This MRI approach could be clinically translated to establish which IC/BPS patients have bladder hyper-permeability and help determine therapeutic options. In addition, the in vivo molecular-targeted imaging approach can provide invaluable information to enhance our understanding associated with bladder urothelium hyper-permeability in IC/BPS patients, and perhaps be used to assist in developing further therapeutic strategies.
Collapse
Affiliation(s)
- Nataliya Smith
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States of America
| | - Debra Saunders
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States of America
| | - Megan Lerner
- Surgery Research Laboratory, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Michelle Zalles
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States of America
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Nadezda Mamedova
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States of America
| | - Daniel Cheong
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States of America
| | - Ehsan Mohammadi
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Tian Yuan
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Yi Luo
- Department of Urology, University of Iowa, Iowa City, IA, United States of America
| | - Robert E. Hurst
- Department of Urology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Beverley Greenwood-Van Meerveld
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
- Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| | - Rheal A. Towner
- Advanced Magnetic Resonance Center, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States of America
- Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States of America
| |
Collapse
|
13
|
Anwer S, Szaszi K. Measuring Cell Growth and Junction Development in Epithelial Cells Using Electric Cell-Substrate Impedance Sensing (ECIS). Bio Protoc 2020; 10:e3729. [PMID: 33659390 DOI: 10.21769/bioprotoc.3729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 06/18/2020] [Accepted: 07/14/2020] [Indexed: 12/11/2022] Open
Abstract
Electric Cell-substrate Impedance Sensing (ECIS) is an automated method that can be used to quantify processes such as cell attachment, growth, migration and barrier functions (i.e., the properties of tight junctions). The method provides simultaneous information on cell number and tight junction function by detecting electric parameters of cells grown on electrodes. Samples are probed with small alternating current (AC) over a range of frequencies, and changes in capacitance and impedance are measured over time. Capacitance reflects the degree of electrode coverage by cells, that correlates with cell number, and can be used to assess cell proliferation or migration. Impedance values inform about barrier function. Obtaining real-time simultaneous information on these parameters is unique to this system and is of great value for addressing fundamental questions such as the role of tight junction proteins in cell growth and migration. This protocol describes the use of ECIS to follow cell growth and tight junction-dependent barrier generation in tubular epithelial cells. We used this method to explore how depleting claudin-2, a tight junction protein affects tubular cell growth and barrier function. During the process, cells are transfected with control or claudin-2-specific siRNA, and 24h later plated on electrodes. ECIS automatically collects information on cell growth and barrier as the monolayer develops. The data are initially analyzed using the ECIS software and exported into a graph software for further processing.
Collapse
Affiliation(s)
- Shaista Anwer
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Canada
| | - Katalin Szaszi
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Canada.,Dept. of Surgery, University of Toronto, ON, Canada
| |
Collapse
|
14
|
Anwer S, Szaszi K. Immunofluorescent Staining of Claudin-2 in Cultured Kidney Tubular Cells. Bio Protoc 2020; 10:e3678. [PMID: 33659349 DOI: 10.21769/bioprotoc.3678] [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: 01/22/2020] [Revised: 03/31/2020] [Accepted: 05/20/2020] [Indexed: 11/02/2022] Open
Abstract
Members of the claudin family of tight junction proteins regulate paracellular permeability and modulate cell signaling. During junction remodeling, these proteins are selectively inserted into or retrieved from the tight junctions, but the control and coordination of these processes remain incompletely understood. Visualization of claudins allows the assessment of changes in their localization and abundance. We use the described protocol to stain claudin-2, but it can also be adapted to stain any tight junction protein. We found that using methanol for fixing allows the best preservation of claudin-2 both at the membrane and in cytoplasmic vesicles. Staining is done using a claudin-2 specific primary and a fluorescently labelled secondary antibody, along with DAPI to label nuclei. The samples are then imaged using confocal microscopy, and a z-stack is obtained allowing visualization of both junctional and intracellular claudin-2. Total claudin-2 signal can be quantified after 3D reconstruction of the images using the Imaris software.
Collapse
Affiliation(s)
- Shaista Anwer
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Canada
| | - Katalin Szaszi
- Keenan Research Centre for Biomedical Science of the St. Michael's Hospital, Toronto, Canada.,Dept. of Surgery, University of Toronto, ON, Canada
| |
Collapse
|
15
|
Shou Y, Zhu X, Zhu D, Yin H, Shi Y, Chen M, Lu L, Qian Q, Zhao D, Hu Y, Wang H. Ambient PM 2.5 chronic exposure leads to cognitive decline in mice: From pulmonary to neuronal inflammation. Toxicol Lett 2020; 331:208-217. [PMID: 32569800 DOI: 10.1016/j.toxlet.2020.06.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 10/24/2022]
Abstract
Fine particulate matter 2.5 (PM2.5), one of the main components of air pollutants, seriously threatens human health. Possible neuronal dysfunction induced by PM2.5 has received extensive attention. However, there is little evidence for the specific biochemical mechanism of neuronal injury induced by PM2.5. Moreover, the pathway for PM2.5 transport from peripheral circulation to the central nervous system (CNS) is still unclear. In the current work, C57BL/6 mice were chronically exposed to ambient PM2.5 for 3, 6, 9, and 12 months. Exposure to ambient PM2.5 resulted in a significant reduction of cognitive ability in mice by Morris water maze test. PM2.5 exposure induced a neuroinflammatory reaction after cognitive impairment, while inflammation in the hypothalamus and olfactory bulb tissue occurred earlier. The expression levels of integrity tight junction proteins in the blood-brain barrier (BBB) were reduced by PM2.5 exposure. Pulmonary inflammation occurred much earlier and diminished at later stage of PM2.5 exposure. The results indicated that chronic exposure to ambient PM2.5 led to cognitive decline in mice; CNS dysfunction may be due to neuroinflammatory reactions; the reduced integrity of the BBB allowed the influence of pulmonary inflammation to neuronal alterations. The work may provide promising therapeutic or preventive targets for air pollution-induced neurodegenerative disease.
Collapse
Affiliation(s)
- Yikai Shou
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, China
| | - Xiaozheng Zhu
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China
| | - Danna Zhu
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Department of Pharmacy, 2ndAffiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Hongping Yin
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yingying Shi
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China
| | - Minyan Chen
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Linjie Lu
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Qiwei Qian
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Dongjiu Zhao
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Yu Hu
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China.
| | - Huanhuan Wang
- School of Medicine, Hangzhou Normal University, Hangzhou 311121, China; Laboratory of Aging and Cancer Biology of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China.
| |
Collapse
|
16
|
Du Y, Khandekar G, Llewellyn J, Polacheck W, Chen CS, Wells RG. A Bile Duct-on-a-Chip With Organ-Level Functions. Hepatology 2020; 71:1350-1363. [PMID: 31465556 PMCID: PMC7048662 DOI: 10.1002/hep.30918] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 08/22/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Chronic cholestatic liver diseases, such as primary biliary cholangitis (PBC) and primary sclerosing cholangitis (PSC), are frequently associated with damage to the barrier function of the biliary epithelium. Here, we report on a bile duct-on-a-chip that phenocopies not only the tubular architecture of the bile duct in three dimensions, but also its barrier functions. APPROACH AND RESULTS We showed that mouse cholangiocytes in the channel of the device became polarized and formed mature tight junctions, that the permeability of the cholangiocyte monolayer was comparable to ex vivo measurements, and that cholangiocytes in the device were mechanosensitive (as demonstrated by changes in calcium flux under applied luminal flow). Permeability decreased significantly when cells formed a compact monolayer with cell densities comparable to those observed in vivo. This device enabled independent access to the apical and basolateral surfaces of the cholangiocyte channel, allowing proof-of-concept toxicity studies with the biliary toxin, biliatresone, and the bile acid, glycochenodeoxycholic acid. The cholangiocyte basolateral side was more vulnerable than the apical side to treatment with either agent, suggesting a protective adaptation of the apical surface that is normally exposed to bile. Further studies revealed a protective role of the cholangiocyte apical glycocalyx, wherein disruption of the glycocalyx with neuraminidase increased the permeability of the cholangiocyte monolayer after treatment with glycochenodeoxycholic acid. CONCLUSIONS This bile duct-on-a-chip captured essential features of a simplified bile duct in structure and organ-level functions and represents an in vitro platform to study the pathophysiology of the bile duct using cholangiocytes from a variety of sources.
Collapse
Affiliation(s)
- Yu Du
- Division of GastroenterologyDepartment of MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA,Center for Engineering MechanoBiologyThe University of PennsylvaniaPhiladelphiaPA
| | - Gauri Khandekar
- Division of GastroenterologyDepartment of MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA,Center for Engineering MechanoBiologyThe University of PennsylvaniaPhiladelphiaPA
| | - Jessica Llewellyn
- Division of GastroenterologyDepartment of MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA,Center for Engineering MechanoBiologyThe University of PennsylvaniaPhiladelphiaPA
| | - William Polacheck
- The Wyss Institute for Biologically Inspired EngineeringHarvard UniversityBostonMA,The Biological Design Center and Department of Biomedical EngineeringBoston UniversityBostonMA,Joint Department of Biomedical EngineeringUniversity of North Carolina at Chapel Hill and North Carolina State UniversityChapel HillNC
| | - Christopher S. Chen
- The Biological Design Center and Department of Biomedical EngineeringBoston UniversityBostonMA,Tissue Microfabrication LaboratoryDepartment of Biomedical EngineeringBoston UniversityBostonMA,Center for Engineering MechanoBiologyThe University of PennsylvaniaPhiladelphiaPA
| | - Rebecca G. Wells
- Division of GastroenterologyDepartment of MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA,Department of BioengineeringSchool of Engineering and Applied SciencesThe University of PennsylvaniaPhiladelphiaPA,Department of Pathology and Laboratory MedicinePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA,Center for Engineering MechanoBiologyThe University of PennsylvaniaPhiladelphiaPA
| |
Collapse
|
17
|
Venugopal S, Anwer S, Szászi K. Claudin-2: Roles beyond Permeability Functions. Int J Mol Sci 2019; 20:ijms20225655. [PMID: 31726679 PMCID: PMC6888627 DOI: 10.3390/ijms20225655] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/08/2019] [Accepted: 11/09/2019] [Indexed: 12/12/2022] Open
Abstract
Claudin-2 is expressed in the tight junctions of leaky epithelia, where it forms cation-selective and water permeable paracellular channels. Its abundance is under fine control by a complex signaling network that affects both its synthesis and turnover in response to various environmental inputs. Claudin-2 expression is dysregulated in many pathologies including cancer, inflammation, and fibrosis. Claudin-2 has a key role in energy-efficient ion and water transport in the proximal tubules of the kidneys and in the gut. Importantly, strong evidence now also supports a role for this protein as a modulator of vital cellular events relevant to diseases. Signaling pathways that are overactivated in diseases can alter claudin-2 expression, and a good correlation exists between disease stage and claudin-2 abundance. Further, loss- and gain-of-function studies showed that primary changes in claudin-2 expression impact vital cellular processes such as proliferation, migration, and cell fate determination. These effects appear to be mediated by alterations in key signaling pathways. The specific mechanisms linking claudin-2 to these changes remain poorly understood, but adapters binding to the intracellular portion of claudin-2 may play a key role. Thus, dysregulation of claudin-2 may contribute to the generation, maintenance, and/or progression of diseases through both permeability-dependent and -independent mechanisms. The aim of this review is to provide an overview of the properties, regulation, and functions of claudin-2, with a special emphasis on its signal-modulating effects and possible role in diseases.
Collapse
|
18
|
Temporal Effects of Quercetin on Tight Junction Barrier Properties and Claudin Expression and Localization in MDCK II Cells. Int J Mol Sci 2019; 20:ijms20194889. [PMID: 31581662 PMCID: PMC6801663 DOI: 10.3390/ijms20194889] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/28/2019] [Accepted: 09/29/2019] [Indexed: 01/22/2023] Open
Abstract
: Kidney stones affect 10% of the population. Yet, there is relatively little known about how they form or how to prevent and treat them. The claudin family of tight junction proteins has been linked to the formation of kidney stones. The flavonoid quercetin has been shown to prevent kidney stone formation and to modify claudin expression in different models. Here we investigate the effect of quercetin on claudin expression and localization in MDCK II cells, a cation-selective cell line, derived from the proximal tubule. For this study, we focused our analyses on claudin family members that confer different tight junction properties: barrier-sealing (Cldn1, -3, and -7), cation-selective (Cldn2) or anion-selective (Cldn4). Our data revealed that quercetin's effects on the expression and localization of different claudins over time corresponded with changes in transepithelial resistance, which was measured continuously throughout the treatment. In addition, these effects appear to be independent of PI3K/AKT signaling, one of the pathways that is known to act downstream of quercetin. In conclusion, our data suggest that quercetin's effects on claudins result in a tighter epithelial barrier, which may reduce the reabsorption of sodium, calcium and water, thereby preventing the formation of a kidney stone.
Collapse
|
19
|
Dan Q, Shi Y, Rabani R, Venugopal S, Xiao J, Anwer S, Ding M, Speight P, Pan W, Alexander RT, Kapus A, Szászi K. Claudin-2 suppresses GEF-H1, RHOA, and MRTF, thereby impacting proliferation and profibrotic phenotype of tubular cells. J Biol Chem 2019; 294:15446-15465. [PMID: 31481470 DOI: 10.1074/jbc.ra118.006484] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 08/21/2019] [Indexed: 12/19/2022] Open
Abstract
The tight junctional pore-forming protein claudin-2 (CLDN-2) mediates paracellular Na+ and water transport in leaky epithelia and alters cancer cell proliferation. Previously, we reported that tumor necrosis factor-α time-dependently alters CLDN-2 expression in tubular epithelial cells. Here, we found a similar expression pattern in a mouse kidney injury model (unilateral ureteral obstruction), consisting of an initial increase followed by a drop in CLDN-2 protein expression. CLDN-2 silencing in LLC-PK1 tubular cells induced activation and phosphorylation of guanine nucleotide exchange factor H1 (GEF-H1), leading to Ras homolog family member A (RHOA) activation. Silencing of other claudins had no such effects, and re-expression of an siRNA-resistant CLDN-2 prevented RHOA activation, indicating specific effects of CLDN-2 on RHOA. Moreover, kidneys from CLDN-2 knockout mice had elevated levels of active RHOA. Of note, CLDN-2 silencing reduced LLC-PK1 cell proliferation and elevated expression of cyclin-dependent kinase inhibitor P27 (P27KIP1) in a GEF-H1/RHOA-dependent manner. P27KIP1 silencing abrogated the effects of CLDN-2 depletion on proliferation. CLDN-2 loss also activated myocardin-related transcription factor (MRTF), a fibrogenic RHOA effector, and elevated expression of connective tissue growth factor and smooth muscle actin. Finally, CLDN-2 down-regulation contributed to RHOA activation and smooth muscle actin expression induced by prolonged tumor necrosis factor-α treatment, because they were mitigated by re-expression of CLDN-2. Our results indicate that CLDN-2 suppresses GEF-H1/RHOA. CLDN-2 down-regulation, for example, by inflammation, can reduce proliferation and promote MRTF activation through RHOA. These findings suggest that the initial CLDN-2 elevation might aid epithelial regeneration, and CLDN-2 loss could contribute to fibrotic reprogramming.
Collapse
Affiliation(s)
- Qinghong Dan
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Yixuan Shi
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Razieh Rabani
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Shruthi Venugopal
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Jenny Xiao
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Shaista Anwer
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Mei Ding
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Pam Speight
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada
| | - Wanling Pan
- Departments of Pediatrics and Physiology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
| | - R Todd Alexander
- Departments of Pediatrics and Physiology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
| | - András Kapus
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada.,Department of Surgery, University of Toronto, Ontario M5B 1T8, Canada
| | - Katalin Szászi
- Keenan Research Centre for Biomedical Science at St. Michael's Hospital, University of Toronto, Ontario M5B 1T8, Canada .,Department of Surgery, University of Toronto, Ontario M5B 1T8, Canada
| |
Collapse
|
20
|
Escherichia coli Nissle 1917 Protects Intestinal Barrier Function by Inhibiting NF- κB-Mediated Activation of the MLCK-P-MLC Signaling Pathway. Mediators Inflamm 2019; 2019:5796491. [PMID: 31354386 PMCID: PMC6636522 DOI: 10.1155/2019/5796491] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/17/2019] [Accepted: 05/29/2019] [Indexed: 12/26/2022] Open
Abstract
Escherichia coli Nissle 1917 (EcN), a kind of probiotic, has been reported to have a protective effect on the intestinal barrier function and can ameliorate certain gastrointestinal disorders. In this study, the potential protective effect of EcN on the intestinal barrier function in a septic mouse model induced by cecal ligation and puncture (CLP) operation was investigated. FITC-Dextran 4,000 Da (FD-4) flux and the expression levels of tight junction (TJ) proteins were measured to evaluate the protective effect of EcN on the intestinal barrier function. Then, Caco-2 monolayers were utilized to further investigate the protective effect of the EcN supernatant (EcNsup) on the barrier dysfunction induced by TNF-α and IFN-γ in vitro; the plasma level of both the cytokines increased significantly during sepsis. Transepithelial electrical resistance (TEER) and FD-4 transmembrane flux were measured, and the localization of ZO-1 and Occludin was investigated by immunofluorescence. The expression of MLCK and the phosphorylation of MLC were detected by western blot. The activation of NF-κB was explored by immunofluorescence, and CHIP assays were performed to investigate the conjunction of NF-κB with the promoter of MLCK. The results indicated that EcN protected the intestinal barrier function in sepsis by ameliorating the altered expression and localization of TJ proteins and inhibiting the NF-κB-mediated activation of the MLCK-P-MLC signaling pathway which might be one of the mechanisms underlying the effect of EcN.
Collapse
|
21
|
Han SW, Kim JM, Lho Y, Cho HJ, Jung YK, Kim JA, Lee H, Lee YJ, Kim ES. DICAM Attenuates Experimental Colitis via Stabilizing Junctional Complex in Mucosal Barrier. Inflamm Bowel Dis 2019; 25:853-861. [PMID: 30534988 DOI: 10.1093/ibd/izy373] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND Adhesion molecules maintain the intestinal barrier function that is crucial to prevent intestinal inflammation. Dual immunoglobulin domain-containing adhesion molecule (DICAM) has been recently identified and known for the involvement in cell-cell adhesion through homophilic interaction and heterophilic interaction with integrin αVβ3. We tested whether the change of DICAM expression affects the severity of colonic inflammation. METHODS Colitis was induced with oral administration of 2.5% dextran sulfate sodium (DSS) in 8-week-old male mice for 5 days. The function of DICAM under inflammatory condition was investigated using loss-of-function and gain-of-function models such as DICAM-deficient mice and adenoviral transduction of DICAM into Caco-2 colonic epithelial cells. RESULTS DICAM increased in parallel with the degree of inflammation after 5-day administration of DSS and decreased with the resolution of inflammation. DICAM was expressed in the epithelial junctional complex and colocalized with ZO-1. Treatment with TNF-α or IFN-γ in Caco-2 cells significantly increased DICAM in protein and RNA level. The DICAM knockout mice showed more severe DSS-induced colitis compared with WT littermates. Adenoviral transduction of DICAM into Caco-2 cells significantly attenuated the inflammation-mediated decrease of adhesion molecules, including ZO-1 and occludin. Furthermore, Caco-2 cells with DICAM overexpression maintained intestinal barrier function under IFN-γ treatment as estimated by transepithelial electrical resistance. CONCLUSION Our study demonstrates that DICAM which is increased in an inflammatory condition has a protective role in experimental colitis by stabilizing the integrity of junctional complex in the intestinal mucosal barrier.
Collapse
Affiliation(s)
- Seung-Woo Han
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jeong Min Kim
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Keimyung University, Daegu, Korea
| | - Yunmee Lho
- Department of Biochemistry, Pain Research Center, School of Medicine, Keimyung University, Daegu, Korea
| | - Hyun Jung Cho
- Laboratory for Arthritis and Bone Biology, Fatima Research Institute, Daegu, Korea
| | - Youn-Kwan Jung
- Laboratory for Arthritis and Bone Biology, Fatima Research Institute, Daegu, Korea
| | - Jung-Ae Kim
- College of Pharmacy, Yeungnam University, Daegu, Korea
| | - Hoyul Lee
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Yu-Jeong Lee
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Eun Soo Kim
- Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| |
Collapse
|
22
|
Van Itallie CM, Lidman KF, Tietgens AJ, Anderson JM. Newly synthesized claudins but not occludin are added to the basal side of the tight junction. Mol Biol Cell 2019; 30:1406-1424. [PMID: 30943107 PMCID: PMC6724697 DOI: 10.1091/mbc.e19-01-0008] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A network of claudin strands creates continuous cell–cell contacts to form the intercellular tight junction barrier; a second protein, occludin, is associated along these strands. The physiological barrier remains stable despite protein turnover, which involves removal and replacement of claudins both in the steady state and during junction remodeling. Here we use a pulse–block–pulse labeling protocol with fluorescent ligands to label SNAP/CLIP-tags fused to claudins and occludin to identify their spatial trafficking pathways and kinetics in Madin–Darby canine kidney monolayers. We find that claudins are first delivered to the lateral membrane and, over time, enter the junction strand network from the basal side; this is followed by slow replacement of older claudins in the strands. In contrast, even at early times, newly synthesized occludin is found throughout the network. Taking the results together with our previous documentation of the mechanism for claudin strand assembly in a fibroblast model, we speculate that newly synthesized claudins are added at strand breaks and free ends; these are most common in the basalmost edge of the junction. In contrast, occludin can be added directly within the strand network. We further demonstrate that claudin trafficking and half-life depend on carboxy-terminal sequences and that different claudins compete for tight junction localization.
Collapse
Affiliation(s)
- Christina M Van Itallie
- Laboratory of Tight Junction Structure and Function, National Institutes of Health, Bethesda, MD 20892
| | - Karin Fredriksson Lidman
- Laboratory of Tight Junction Structure and Function, National Institutes of Health, Bethesda, MD 20892
| | - Amber Jean Tietgens
- Laboratory of Tight Junction Structure and Function, National Institutes of Health, Bethesda, MD 20892
| | - James Melvin Anderson
- Laboratory of Tight Junction Structure and Function, National Institutes of Health, Bethesda, MD 20892
| |
Collapse
|