1
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Colvin VC, Bramer LM, Rivera BN, Pennington JM, Waters KM, Tilton SC. Modeling PAH Mixture Interactions in a Human In Vitro Organotypic Respiratory Model. Int J Mol Sci 2024; 25:4326. [PMID: 38673911 PMCID: PMC11050152 DOI: 10.3390/ijms25084326] [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: 03/17/2024] [Revised: 04/06/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
One of the most significant challenges in human health risk assessment is to evaluate hazards from exposure to environmental chemical mixtures. Polycyclic aromatic hydrocarbons (PAHs) are a class of ubiquitous contaminants typically found as mixtures in gaseous and particulate phases in ambient air pollution associated with petrochemicals from Superfund sites and the burning of fossil fuels. However, little is understood about how PAHs in mixtures contribute to toxicity in lung cells. To investigate mixture interactions and component additivity from environmentally relevant PAHs, two synthetic mixtures were created from PAHs identified in passive air samplers at a legacy creosote site impacted by wildfires. The primary human bronchial epithelial cells differentiated at the air-liquid interface were treated with PAH mixtures at environmentally relevant proportions and evaluated for the differential expression of transcriptional biomarkers related to xenobiotic metabolism, oxidative stress response, barrier integrity, and DNA damage response. Component additivity was evaluated across all endpoints using two independent action (IA) models with and without the scaling of components by toxic equivalence factors. Both IA models exhibited trends that were unlike the observed mixture response and generally underestimated the toxicity across dose suggesting the potential for non-additive interactions of components. Overall, this study provides an example of the usefulness of mixture toxicity assessment with the currently available methods while demonstrating the need for more complex yet interpretable mixture response evaluation methods for environmental samples.
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Affiliation(s)
- Victoria C. Colvin
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
- OSU/PNNL Superfund Research Program, Oregon State University, Corvallis, OR 97331, USA
| | - Lisa M. Bramer
- OSU/PNNL Superfund Research Program, Oregon State University, Corvallis, OR 97331, USA
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Brianna N. Rivera
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
- OSU/PNNL Superfund Research Program, Oregon State University, Corvallis, OR 97331, USA
| | - Jamie M. Pennington
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
| | - Katrina M. Waters
- OSU/PNNL Superfund Research Program, Oregon State University, Corvallis, OR 97331, USA
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Susan C. Tilton
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA
- OSU/PNNL Superfund Research Program, Oregon State University, Corvallis, OR 97331, USA
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2
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Schmidt A, Finegan T, Häring M, Kong D, Fletcher AG, Alam Z, Grosshans J, Wolf F, Peifer M. Polychaetoid/ZO-1 strengthens cell junctions under tension while localizing differently than core adherens junction proteins. Mol Biol Cell 2023; 34:ar81. [PMID: 37163320 PMCID: PMC10398881 DOI: 10.1091/mbc.e23-03-0077] [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: 03/01/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/11/2023] Open
Abstract
During embryonic development, dramatic cell shape changes and movements reshape the embryonic body plan. These require robust but dynamic linkage between the cell-cell adherens junctions and the force-generating actomyosin cytoskeleton. Our view of this linkage has evolved, and we now realize linkage is mediated by mechanosensitive multiprotein complexes assembled via multivalent connections. Here we combine genetic, cell biological, and modeling approaches to define the mechanism of action and functions of an important player, Drosophila polychaetoid, homologue of mammalian ZO-1. Our data reveal that Pyd reinforces cell junctions under elevated tension, and facilitates cell rearrangements. Pyd is important to maintain junctional contractility and in its absence cell rearrangements stall. We next use structured illumination microscopy to define the molecular architecture of cell-cell junctions during these events. The cadherin-catenin complex and Cno both localize to puncta along the junctional membrane, but are differentially enriched in different puncta. Pyd, in contrast, exhibits a distinct localization to strands that extend out from the region occupied by core junction proteins. We then discuss the implications for the protein network at the junction-cytoskeletal interface, suggesting different proteins localize and function in distinct ways, perhaps in distinct subcomplexes, but combine to produce robust connections.
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Affiliation(s)
- Anja Schmidt
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280
| | - Tara Finegan
- Department of Biology, University of Rochester, Rochester, New York 14627-0211
| | - Matthias Häring
- Göttingen Campus Institute for Dynamics of Biological Networks, Georg August University, 37075 Göttingen, Germany
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
- Max Planck Institute for Multidisciplinary Sciences, 37075 Göttingen, Germany
- Institute for Dynamics of Complex Systems, Georg August University, 37077 Göttingen, Germany
| | - Deqing Kong
- Department of Biology, Philipps University, 35043 Marburg, Germany
| | - Alexander G Fletcher
- School of Mathematics and Statistics and Bateson Centre, University of Sheffield, Sheffield S10 2TN, United Kingdom
| | - Zuhayr Alam
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280
| | - Jörg Grosshans
- Department of Biology, Philipps University, 35043 Marburg, Germany
| | - Fred Wolf
- Göttingen Campus Institute for Dynamics of Biological Networks, Georg August University, 37075 Göttingen, Germany
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
- Max Planck Institute for Multidisciplinary Sciences, 37075 Göttingen, Germany
- Institute for Dynamics of Complex Systems, Georg August University, 37077 Göttingen, Germany
| | - Mark Peifer
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3280
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3
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Xie S, Wei S, Ma X, Wang R, He T, Zhang Z, Yang J, Wang J, Chang L, Jing M, Li H, Zhou X, Zhao Y. Genetic alterations and molecular mechanisms underlying hereditary intrahepatic cholestasis. Front Pharmacol 2023; 14:1173542. [PMID: 37324459 PMCID: PMC10264785 DOI: 10.3389/fphar.2023.1173542] [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: 03/03/2023] [Accepted: 05/16/2023] [Indexed: 06/17/2023] Open
Abstract
Hereditary cholestatic liver disease caused by a class of autosomal gene mutations results in jaundice, which involves the abnormality of the synthesis, secretion, and other disorders of bile acids metabolism. Due to the existence of a variety of gene mutations, the clinical manifestations of children are also diverse. There is no unified standard for diagnosis and single detection method, which seriously hinders the development of clinical treatment. Therefore, the mutated genes of hereditary intrahepatic cholestasis were systematically described in this review.
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Affiliation(s)
- Shuying Xie
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Shizhang Wei
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Xiao Ma
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ruilin Wang
- Department of Pharmacy, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Tingting He
- Department of Pharmacy, 5th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Zhao Zhang
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ju Yang
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiawei Wang
- Pharmacy College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lei Chang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
| | - Manyi Jing
- Department of Pharmacy, Chinese PLA General Hospital, Beijing, China
| | - Haotian Li
- Department of Pharmacy, Chinese PLA General Hospital, Beijing, China
| | - Xuelin Zhou
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Yanling Zhao
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, China
- Department of Pharmacy, Chinese PLA General Hospital, Beijing, China
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4
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Schmidt A, Finegan T, Häring M, Kong D, Fletcher AG, Alam Z, Grosshans J, Wolf F, Peifer M. Polychaetoid/ZO-1 strengthens cell junctions under tension while localizing differently than core adherens junction proteins. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.03.01.530634. [PMID: 36909597 PMCID: PMC10002719 DOI: 10.1101/2023.03.01.530634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
During embryonic development dramatic cell shape changes and movements re-shape the embryonic body plan. These require robust but dynamic linkage between the cell-cell adherens junctions and the force-generating actomyosin cytoskeleton. Our view of this linkage has evolved, and we now realize linkage is mediated by a mechanosensitive multiprotein complex assembled via multivalent connections. Here we combine genetic, cell biological and modeling approaches to define the mechanism of action and functions of an important player, Drosophila Polychaetoid, homolog of mammalian ZO-1. Our data reveal that Pyd reinforces cell junctions under elevated tension, and facilitates cell rearrangements. Pyd is important to maintain junctional contractility and in its absence cell rearrangements stall. We next use structured illumination microscopy to define the molecular architecture of cell-cell junctions during these events. The cadherin-catenin complex and Cno both localize to puncta along the junctional membrane, but are differentially enriched in different puncta. Pyd, in contrast, exhibits a distinct localization to strands that extend out from the region occupied by core junction proteins. We then discuss the implications for the protein network at the junction-cytoskeletal interface, suggesting different proteins localize and function in distinct ways but combine to produce robust connections.
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Affiliation(s)
- Anja Schmidt
- Department of Biology, University of North Carolina at Chapel Hill, CB#3280, Chapel Hill, NC 27599-3280, USA
| | - Tara Finegan
- Department of Biology, University of Rochester, Rochester, New York, USA 14627-0211
| | - Matthias Häring
- Göttingen Campus Institute for Dynamics of Biological Networks, Georg August University, Hermann Rein Str. 3, 37075 Göttingen, Germany
- Max Planck Institute for Dynamics and Self-Organization, Am Faßberg 17, 37077 Göttingen, Germany
- Max Planck Institute for Multidisciplinary Sciences, Hermann Rein St. 3, 37075 Göttingen, German
- Institute for Dynamics of Complex Systems, Georg August University, Friedrich Hund Pl. 1, 37077 Göttingen, Germany
| | - Deqing Kong
- Department of Biology, Philipps University, Karl-von-Frisch-Straße 8, 35043 Marburg, Germany
| | - Alexander G Fletcher
- School of Mathematics and Statistics & Bateson Centre, University of Sheffield, Sheffield, UK
| | - Zuhayr Alam
- Department of Biology, University of North Carolina at Chapel Hill, CB#3280, Chapel Hill, NC 27599-3280, USA
| | - Jörg Grosshans
- Department of Biology, Philipps University, Karl-von-Frisch-Straße 8, 35043 Marburg, Germany
| | - Fred Wolf
- Göttingen Campus Institute for Dynamics of Biological Networks, Georg August University, Hermann Rein Str. 3, 37075 Göttingen, Germany
- Max Planck Institute for Dynamics and Self-Organization, Am Faßberg 17, 37077 Göttingen, Germany
- Max Planck Institute for Multidisciplinary Sciences, Hermann Rein St. 3, 37075 Göttingen, German
- Institute for Dynamics of Complex Systems, Georg August University, Friedrich Hund Pl. 1, 37077 Göttingen, Germany
| | - Mark Peifer
- Department of Biology, University of North Carolina at Chapel Hill, CB#3280, Chapel Hill, NC 27599-3280, USA
- Corresponding author
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5
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Seidemann L, Prinz S, Scherbel JC, Götz C, Seehofer D, Damm G. Optimization of extracellular matrix for primary human hepatocyte cultures using mixed collagen-Matrigel matrices. EXCLI JOURNAL 2023; 22:12-34. [PMID: 36660192 PMCID: PMC9837384 DOI: 10.17179/excli2022-5459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/17/2022] [Indexed: 01/21/2023]
Abstract
Loss of differentiation of primary human hepatocytes (PHHs) ex vivo is a known problem of in vitro liver models. Culture optimizations using collagen type I and Matrigel reduce the dedifferentiation process but are not able to prevent it. While neither of these extracellular matrices (ECMs) on their own correspond to the authentic hepatic ECM, a combination of them could more closely resemble the in vivo situation. Our study aimed to systematically analyze the influence of mixed matrices composed of collagen type I and Matrigel on the maintenance and reestablishment of hepatic functions. Therefore, PHHs were cultured on mixed collagen-Matrigel matrices in monolayer and sandwich cultures and viability, metabolic capacity, differentiation markers, cellular arrangement and the cells' ability to repolarize and form functional bile canaliculi were assessed by reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR), functional assays and immunofluorescence microscopy. Our results show that mixed matrices were superior to pure matrices in maintaining metabolic capacity and hepatic differentiation. In contrast, Matrigel supplementation can impair the development of a proper hepatocytic polarization. Our systematic study helps to compose an optimized ECM to maintain and reestablish hepatic differentiation on cellular and multicellular levels in human liver models.
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Affiliation(s)
- Lena Seidemann
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany,Saxonian Incubator for Clinical Translation (SIKT), Leipzig University, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany
| | - Sarah Prinz
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany,Saxonian Incubator for Clinical Translation (SIKT), Leipzig University, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany
| | - Jan-Constantin Scherbel
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany,Saxonian Incubator for Clinical Translation (SIKT), Leipzig University, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany
| | - Christina Götz
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany,Saxonian Incubator for Clinical Translation (SIKT), Leipzig University, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany
| | - Daniel Seehofer
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany,Saxonian Incubator for Clinical Translation (SIKT), Leipzig University, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany
| | - Georg Damm
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany,Saxonian Incubator for Clinical Translation (SIKT), Leipzig University, Philipp-Rosenthal-Str. 55, 04103 Leipzig, Germany,*To whom correspondence should be addressed: Georg Damm, Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Liebigstr. 20, 04103 Leipzig, Germany; Tel.: +49-341-9739656, E-mail:
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6
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Xu J, Kausalya PJ, Ong AGM, Goh CMF, Mohamed Ali S, Hunziker W. ZO-2/Tjp2 suppresses Yap and Wwtr1/Taz-mediated hepatocyte to cholangiocyte transdifferentiation in the mouse liver. NPJ Regen Med 2022; 7:55. [PMID: 36151109 PMCID: PMC9508083 DOI: 10.1038/s41536-022-00251-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 09/02/2022] [Indexed: 01/11/2023] Open
Abstract
TJP2/ZO-2-inactivating mutations in humans cause progressive cholestatic liver disease. Liver-specific deletion of Tjp2 in the mouse (Tjp2 cKO mice) leads to mild progressive cholestasis without an overt degradation of the bile-blood barrier (BBB). These mice are more susceptible to cholic acid (CA) induced liver injury. Interestingly, while initially also more susceptible, Tjp2 cKO mice develop tolerance to a DDC-supplemented diet. The DDC diet induces an exacerbated ductular reaction in Tjp2 cKO mice, which arises from the transdifferentiation of hepatocytes to cholangiocytes. Consequently, this transdifferentiation is only observed if Tjp2 is inactivated in hepatocytes, but not if deleted in cholangiocytes. The DDC-diet-induced hepatocyte transdifferentiation in Tjp2 cKO mice requires Yap and Wwtr1/Taz, whose protein expression is upregulated in hepatocytes lacking Tjp2, but is independent of Notch2. Although inactivating Tjp2 is sufficient for the upregulation of Yap and Wwtr1/Taz protein, efficient transdifferentiation requires the DDC-diet insult. Thus, Tjp2 negatively regulates Yap/Taz-mediated transdifferentiation of hepatocytes to cholangiocytes in response to DDC-diet-induced liver injury. Furthermore, transdifferentiation is regulated at multiple levels and the type of injury inflicted on the Tjp2 deficient liver plays an important role in the resulting pathophysiology.
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Affiliation(s)
- Jianliang Xu
- Epithelial Polarity in Disease and Tissue Regeneration Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive Proteos, Singapore, 138673, Singapore.
| | - P Jaya Kausalya
- Epithelial Polarity in Disease and Tissue Regeneration Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive Proteos, Singapore, 138673, Singapore.,M Diagnostics Pte. Ltd. (MiRXES), 30 Biopolis Road, #09-05/06 Matrix, Singapore, 138671, Singapore
| | - Alicia Ghia Min Ong
- Epithelial Polarity in Disease and Tissue Regeneration Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive Proteos, Singapore, 138673, Singapore
| | - Christine Meng Fan Goh
- Epithelial Polarity in Disease and Tissue Regeneration Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive Proteos, Singapore, 138673, Singapore
| | - Safiah Mohamed Ali
- Epithelial Polarity in Disease and Tissue Regeneration Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive Proteos, Singapore, 138673, Singapore
| | - Walter Hunziker
- Epithelial Polarity in Disease and Tissue Regeneration Laboratory, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive Proteos, Singapore, 138673, Singapore. .,Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, 2 Medical Drive MD9, Singapore, 117593, Singapore.
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Isolation of Hepatocytes from Liver Tissue by a Novel, Semi-Automated Perfusion Technology. Biomedicines 2022; 10:biomedicines10092198. [PMID: 36140299 PMCID: PMC9496349 DOI: 10.3390/biomedicines10092198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/25/2022] [Accepted: 08/30/2022] [Indexed: 11/18/2022] Open
Abstract
Primary hepatocytes are a major tool in biomedical research. However, obtaining high yields of variable hepatocytes is technically challenging. Most protocols rely on the two-step collagenase perfusion protocol introduced by Per Ottar Seglen in 1976. In this procedure, the liver is perfused in situ with a recirculating, constant volume of calcium-free buffer, which is maintained at 37 °C and continuously oxygenated. In a second step, the liver is removed from the carcass and perfused with a collagenase solution in order to dissociate the extracellular matrix of the liver and liberate individual cells. Finally, the dissected hepatocytes are further purified and concentrated by density-based centrifugation. However, failure in proper cannulation, incomplete enzymatic digestion or over-digestion can result in low cell yield and viability. Here we present a novel semi-automated perfusion device, which allows gentle, rapid and efficient generation of a single-cell suspension from rodent livers. In combination with prefabricated buffers, the system allows reliable and highly reproducible isolation of primary hepatocytes.
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8
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Ram AK, Vairappan B. Role of zonula occludens in gastrointestinal and liver cancers. World J Clin Cases 2022; 10:3647-3661. [PMID: 35647143 PMCID: PMC9100728 DOI: 10.12998/wjcc.v10.i12.3647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/08/2021] [Accepted: 03/06/2022] [Indexed: 02/06/2023] Open
Abstract
A growing body of evidence suggests that tight junction (TJ) proteins play a crucial role in the pathogenesis of various diseases, including gastrointestinal (GI) cancer and hepatocellular carcinoma (HCC). TJ proteins primarily maintain the epithelial and endothelial cells intact together through integral proteins however, recent reports suggest that they also regulate gene expression necessary for cell proliferation, angiogenesis, and metastasis through adapter proteins such as zonula occludens (ZO). ZO proteins are membrane-associated cytosolic scaffolding proteins that modulate cell proliferation by interacting with several transcription factors. Reduced ZO proteins in GI cancer and HCC are correlated with tumor development and poor prognosis. Pubmed has searched for using the keyword ZO and gastric cancer, ZO and cancer, and ZO and HCC for the last ten years to date. This review summarized the role of ZO proteins in cell proliferation and their expression in GI cancer and HCC. Furthermore, therapeutic interventions targeting ZO in GI and liver cancers are reviewed.
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Affiliation(s)
- Amit Kumar Ram
- Liver Diseases Research Lab, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry 605006, India
| | - Balasubramaniyan Vairappan
- Liver Diseases Research Lab, Department of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry 605006, India
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9
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Li CZ, Ogawa H, Ng SS, Chen X, Kishimoto E, Sakabe K, Fukami A, Hu YC, Mayhew CN, Hellmann J, Miethke A, Tasnova NL, Blackford SJ, Tang ZM, Syanda AM, Ma L, Xiao F, Sambrotta M, Tavabie O, Soares F, Baker O, Danovi D, Hayashi H, Thompson RJ, Rashid ST, Asai A. Human iPSC-derived hepatocyte system models cholestasis with tight junction protein 2 deficiency. JHEP Rep 2022; 4:100446. [PMID: 35284810 PMCID: PMC8904612 DOI: 10.1016/j.jhepr.2022.100446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 01/10/2022] [Accepted: 01/14/2022] [Indexed: 02/07/2023] Open
Abstract
Background & Aims The truncating mutations in tight junction protein 2 (TJP2) cause progressive cholestasis, liver failure, and hepatocyte carcinogenesis. Due to the lack of effective model systems, there are no targeted medications for the liver pathology with TJP2 deficiency. We leveraged the technologies of patient-specific induced pluripotent stem cells (iPSC) and CRISPR genome-editing, and we aim to establish a disease model which recapitulates phenotypes of patients with TJP2 deficiency. Methods We differentiated iPSC to hepatocyte-like cells (iHep) on the Transwell membrane in a polarized monolayer. Immunofluorescent staining of polarity markers was detected by a confocal microscope. The epithelial barrier function and bile acid transport of bile canaliculi were quantified between the two chambers of Transwell. The morphology of bile canaliculi was measured in iHep cultured in the Matrigel sandwich system using a fluorescent probe and live-confocal imaging. Results The iHep differentiated from iPSC with TJP2 mutations exhibited intracellular inclusions of disrupted apical membrane structures, distorted canalicular networks, altered distribution of apical and basolateral markers/transporters. The directional bile acid transport of bile canaliculi was compromised in the mutant hepatocytes, resembling the disease phenotypes observed in the liver of patients. Conclusions Our iPSC-derived in vitro hepatocyte system revealed canalicular membrane disruption in TJP2 deficient hepatocytes and demonstrated the ability to model cholestatic disease with TJP2 deficiency to serve as a platform for further pathophysiologic study and drug discovery. Lay summary We investigated a genetic liver disease, progressive familial intrahepatic cholestasis (PFIC), which causes severe liver disease in newborns and infants due to a lack of gene called TJP2. By using cutting-edge stem cell technology and genome editing methods, we established a novel disease modeling system in cell culture experiments. Our experiments demonstrated that the lack of TJP2 induced abnormal cell polarity and disrupted bile acid transport. These findings will lead to the subsequent investigation to further understand disease mechanisms and develop an effective treatment.
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Key Words
- ALB, albumin
- ASGR2, asialoglycoprotein receptor 2
- ATP1a1, ATPases subunit alpha-1
- BMP4, bone morphogenetic protein 4
- BSA-FAF, bovine serum albumin fatty acid-free
- BSEP, bile salt export pump
- Bile acid transport
- CDFDA, 5-(and-6)-carboxy-2′,7′-dichlorofluorescein
- Cellular polarity
- DE, definitive endoderm
- DILI, drug-induced liver injury
- FGF2, fibroblast growth factor 2
- GCA, glycocholate
- GCDCA, glycochenodeoxycholate
- HCM, Hepatocyte Culture Medium
- HE, hepatic endodermal
- HGF, hepatocyte growth factor
- HNF4a, hepatic nuclear factor 4a
- MDCKII, Madin–Darby canine kidney II
- MRP2, multidrug resistance-associated protein 2
- NTCP, Na+-TCA cotransporter
- PFIC (progressive familial intrahepatic cholestasis)
- PFIC, progressive familial intrahepatic cholestasis
- PI, propidium iodide
- RT-qPCR, quantitative reverse transcription PCR
- TCA, taurocholic acid
- TCDCA, taurochenodeoxycholate
- TEER, transepithelial electrical resistance
- TEM, transmission electron microscopy
- TJP1, tight junction protein 1
- TJP2, tight junction protein 2
- iHep, iPSC-derived hepatocytes
- iPSC, induced pluripotent stem cell
- sgRNA, single-guide RNA
- ssODN, single-stranded oligonucleotide-DNA
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Affiliation(s)
- Chao Zheng Li
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Hiromi Ogawa
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Soon Seng Ng
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Xindi Chen
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Eriko Kishimoto
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Kokoro Sakabe
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Aiko Fukami
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | - Yueh-Chiang Hu
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
| | | | - Jennifer Hellmann
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
- Department of Paediatrics, The University of Cincinnati, Cincinnati, OH, USA
| | - Alexander Miethke
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
- Department of Paediatrics, The University of Cincinnati, Cincinnati, OH, USA
| | - Nahrin L. Tasnova
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | | | - Zu Ming Tang
- Stem Cell Hotel, King’s College London, London, UK
| | - Adam M. Syanda
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Liang Ma
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Fang Xiao
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Melissa Sambrotta
- Institute of Liver Studies King’s College London, London, United Kingdom
| | - Oliver Tavabie
- Institute of Liver Studies King’s College London, London, United Kingdom
| | | | - Oliver Baker
- Genome Editing and Embryology Core Facility, King’s College London, London, UK
| | - Davide Danovi
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Hisamitsu Hayashi
- Graduate School of Pharmaceutical Science, The University of Tokyo, Tokyo, Japan
| | | | - S. Tamir Rashid
- Centre for Stem Cells and Regenerative Medicine, King’s College London, London, UK
| | - Akihiro Asai
- Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA
- Department of Paediatrics, The University of Cincinnati, Cincinnati, OH, USA
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González-González L, Gallego-Gutiérrez H, Martin-Tapia D, Avelino-Cruz JE, Hernández-Guzmán C, Rangel-Guerrero SI, Alvarez-Salas LM, Garay E, Chávez-Munguía B, Gutiérrez-Ruiz MC, Hernández-Melchor D, López-Bayghen E, González-Mariscal L. ZO-2 favors Hippo signaling, and its re-expression in the steatotic liver by AMPK restores junctional sealing. Tissue Barriers 2021; 10:1994351. [PMID: 34689705 DOI: 10.1080/21688370.2021.1994351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
ZO-2 is a peripheral tight junction (TJ) protein whose silencing in renal epithelia induces cell hypertrophy. Here, we found that in ZO-2 KD MDCK cells, in compensatory renal hypertrophy triggered in rats by a unilateral nephrectomy and in liver steatosis of obese Zucker (OZ) rats, ZO-2 silencing is accompanied by the diminished activity of LATS, a kinase of the Hippo pathway, and the nuclear concentration of YAP, the final effector of this signaling route. ZO-2 appears to function as a scaffold for the Hippo pathway as it associates to LATS1. ZO-2 silencing in hypertrophic tissue is due to a diminished abundance of ZO-2 mRNA, and the Sp1 transcription factor is critical for ZO-2 transcription in renal cells. Treatment of OZ rats with metformin, an activator of AMPK that blocks JNK activity, augments ZO-2 and claudin-1 expression in the liver, reduces the paracellular permeability of hepatocytes, and serum bile acid content. Our results suggest that ZO-2 silencing is a common feature of hypertrophy, and that ZO-2 is a positive regulator of the Hippo pathway that regulates cell size. Moreover, our observations highlight the importance of AMPK, JNK, and ZO-2 as therapeutic targets for blood-bile barrier dysfunction.
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Affiliation(s)
- Laura González-González
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Helios Gallego-Gutiérrez
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Dolores Martin-Tapia
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - José Everardo Avelino-Cruz
- Laboratory of Molecular Cardiology, Institute of Physiology, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Christian Hernández-Guzmán
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Sergio Israel Rangel-Guerrero
- Department of Genetics and Molecular Biology, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Luis Marat Alvarez-Salas
- Department of Genetics and Molecular Biology, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Erika Garay
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Bibiana Chávez-Munguía
- Department of Infectomics and Molecular Pathogenesis, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - María Concepción Gutiérrez-Ruiz
- Department of Health Sciences, Autonomous Metropolitan University- Iztapalapa (UAM-I), Mexico City, Mexico; Laboratory of Experimental Medicine, Unit of Translational Medicine, Institute of Biomedical Research, Unam, National Institute of Cardiology "Ignacio Chávez", Mexico City, Mexico
| | | | - Esther López-Bayghen
- Department of Toxicology, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Lorenza González-Mariscal
- Department of Physiology, Biophysics, and Neurosciences, Center for Research and Advanced Studies (Cinvestav), Mexico City, Mexico
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11
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Tang J, Tan M, Deng Y, Tang H, Shi H, Li M, Ma W, Li J, Dai H, Li J, Zhou S, Li X, Wei F, Ma X, Luo L. Two Novel Pathogenic Variants of TJP2 Gene and the Underlying Molecular Mechanisms in Progressive Familial Intrahepatic Cholestasis Type 4 Patients. Front Cell Dev Biol 2021; 9:661599. [PMID: 34504838 PMCID: PMC8421653 DOI: 10.3389/fcell.2021.661599] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 07/09/2021] [Indexed: 12/13/2022] Open
Abstract
Progressive familial intrahepatic cholestasis (PFIC) is an autosomal recessive inherited disease that accounts for 10%-15% childhood cholestasis and could lead to infant disability or death. There are three well-established types of PFIC (1-3), caused by mutations in the ATP8B1, ABCB11, and ABCB4 genes. Biallelic pathogenic variants in the tight junction protein 2 gene (TJP2) were newly reported as a cause for PFIC type 4; however, only a limited number of patients and undisputable variants have been reported for TJP2, and the underlying mechanism for PFIC 4 remains poorly understood. To explore the diagnostic yield of TJP2 analysis in suspected PFIC patients negative for the PFIC1-3 mutation, we designed a multiplex polymerase chain reaction-based next-generation sequencing method to analyze TJP2 gene variants in 267 PFIC patients and identified biallelic rare variants in three patients, including three known pathogenic variants and two novel variants in three patients. By using CRISPR-cas9 technology, we demonstrated that TJP2 c.1202A > G was pathogenic at least partially by increasing the expression and nuclear localization of TJP2 protein. With the minigene assay, we showed that TJP2 c.2668-11A > G was a new pathogenic variant by inducing abnormal splicing of TJP2 gene and translation of prematurely truncated TJP2 protein. Furthermore, knockdown of TJP2 protein by siRNA technology led to inhibition of cell proliferation, induction of apoptosis, dispersed F-actin, and disordered microfilaments in LO2 and HepG2celles. Global gene expression profiling of TJP2 knockdown LO2 cells and HepG2 cells identified the dysregulated genes involved in the regulation of actin cytoskeleton. Microtubule cytoskeleton genes were significantly downregulated in TJP2 knockdown cells. The results of this study demonstrate that TJP2 c.1202A > G and TJP2 c.2668-11A > G are two novel pathogenic variants and the cytoskeleton-related functions and pathways might be potential molecular pathogenesis for PFIC.
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Affiliation(s)
- Jia Tang
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute (Guangdong Provincial Fertility Hospital), Guangzhou, China
- Department of Medical Imaging Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
- Medical Genetics Center, Jiangmen Maternity and Child Health Care Hospital, Jiangmen, China
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Meihua Tan
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China
- BGI Genomics Co., Ltd., Shenzhen, China
| | - Yihui Deng
- Department of Medical Imaging Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Hui Tang
- Department of Medical Imaging Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Haihong Shi
- Medical Genetics Center, Jiangmen Maternity and Child Health Care Hospital, Jiangmen, China
| | - Mingzhen Li
- NHC Key Laboratory of Male Reproduction and Genetics, Guangdong Provincial Reproductive Science Institute (Guangdong Provincial Fertility Hospital), Guangzhou, China
| | - Wei Ma
- Department of Biology, School of Basic Medicine, Jiamusi University, Jiamusi, China
| | - Jia Li
- BGI Genomics Co., Ltd., Shenzhen, China
| | - Hongzheng Dai
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Jianli Li
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, United States
| | - Shengmei Zhou
- Department of Pathology and Laboratory Medicine, Children’s Hospital Los Angeles, Los Angeles, CA, United States
| | - Xu Li
- Key Laboratory of Structural Biology of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Fengxiang Wei
- Longgang District Maternity & Child Healthcare Hospital of Shenzhen City, Shenzhen, China
| | - Xiaofen Ma
- Department of Medical Imaging of Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Liangping Luo
- Department of Medical Imaging Center, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
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