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Piossek F, Beneke S, Schlichenmaier N, Mucic G, Drewitz S, Dietrich DR. Physiological oxygen and co-culture with human fibroblasts facilitate in vivo-like properties in human renal proximal tubular epithelial cells. Chem Biol Interact 2022; 361:109959. [DOI: 10.1016/j.cbi.2022.109959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 11/28/2022]
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Ngo TTT, Rossbach B, Sébastien I, Neubauer JC, Kurtz A, Hariharan K. Functional differentiation and scalable production of renal proximal tubular epithelial cells from human pluripotent stem cells in a dynamic culture system. Cell Prolif 2022; 55:e13190. [PMID: 35102634 PMCID: PMC8891564 DOI: 10.1111/cpr.13190] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/21/2021] [Accepted: 11/08/2021] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To provide a standardized protocol for large-scale production of proximal tubular epithelial cells (PTEC) generated from human pluripotent stem cells (hPSC). METHODS The hPSC were expanded and differentiated into PTEC on matrix-coated alginate beads in an automated levitating fluidic platform bioLevitator. Differentiation efficacy was evaluated by immunofluorescence staining and flow cytometry, ultrastructure visualized by electron microscopy. Active reabsorption by PTEC was investigated by glucose, albumin, organic anions and cations uptake assays. Finally, the response to cisplatin-treatment was assessed to check the potential use of PTEC to model drug-induced nephrotoxicity. RESULTS hPSC expansion and PTEC differentiation could be performed directly on matrix-coated alginate beads in suspension bioreactors. Renal precursors arose 4 days post hPSC differentiation and PTEC after 8 days with 80% efficiency, with a 10-fold expansion from hPSC in 24 days. PTEC on beads, exhibited microvilli and clear apico-basal localization of markers. Functionality of PTECs was confirmed by uptake of glucose, albumin, organic anions and cations and expression of KIM-1 after Cisplatin treatment. CONCLUSION We demonstrate the efficient expansion of hPSC, controlled differentiation to renal progenitors and further specification to polarized tubular epithelial cells. This is the first report employing biolevitation and matrix-coated beads in a completely defined medium for the scalable and potentially automatable production of functional human PTEC.
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Affiliation(s)
- Thao Thi Thanh Ngo
- BIH Center for Regenerative TherapiesCharité Universitätsmedizin BerlinBerlinGermany
| | - Bella Rossbach
- BIH Center for Regenerative TherapiesCharité Universitätsmedizin BerlinBerlinGermany
- Fraunhofer Institute for Biomedical Engineering (IBMT)BerlinGermany
| | - Isabelle Sébastien
- Project Centre for Stem Cell Process EngineeringFraunhofer Institute for Biomedical Engineering (IBMT)WürzburgGermany
| | - Julia C. Neubauer
- Project Centre for Stem Cell Process EngineeringFraunhofer Institute for Biomedical Engineering (IBMT)WürzburgGermany
| | - Andreas Kurtz
- BIH Center for Regenerative TherapiesCharité Universitätsmedizin BerlinBerlinGermany
- Fraunhofer Institute for Biomedical Engineering (IBMT)BerlinGermany
| | - Krithika Hariharan
- BIH Center for Regenerative TherapiesCharité Universitätsmedizin BerlinBerlinGermany
- Project Centre for Stem Cell Process EngineeringFraunhofer Institute for Biomedical Engineering (IBMT)WürzburgGermany
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Yu P, Duan Z, Liu S, Pachon I, Ma J, Hemstreet GP, Zhang Y. Drug-Induced Nephrotoxicity Assessment in 3D Cellular Models. MICROMACHINES 2021; 13:mi13010003. [PMID: 35056167 PMCID: PMC8780064 DOI: 10.3390/mi13010003] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/11/2021] [Accepted: 12/17/2021] [Indexed: 12/19/2022]
Abstract
The kidneys are often involved in adverse effects and toxicity caused by exposure to foreign compounds, chemicals, and drugs. Early predictions of these influences are essential to facilitate new, safe drugs to enter the market. However, in current drug treatments, drug-induced nephrotoxicity accounts for 1/4 of reported serious adverse reactions, and 1/3 of them are attributable to antibiotics. Drug-induced nephrotoxicity is driven by multiple mechanisms, including altered glomerular hemodynamics, renal tubular cytotoxicity, inflammation, crystal nephropathy, and thrombotic microangiopathy. Although the functional proteins expressed by renal tubules that mediate drug sensitivity are well known, current in vitro 2D cell models do not faithfully replicate the morphology and intact renal tubule function, and therefore, they do not replicate in vivo nephrotoxicity. The kidney is delicate and complex, consisting of a filter unit and a tubular part, which together contain more than 20 different cell types. The tubular epithelium is highly polarized, and maintaining cellular polarity is essential for the optimal function and response to environmental signals. Cell polarity depends on the communication between cells, including paracrine and autocrine signals, as well as biomechanical and chemotaxis processes. These processes affect kidney cell proliferation, migration, and differentiation. For drug disposal research, the microenvironment is essential for predicting toxic reactions. This article reviews the mechanism of drug-induced kidney injury, the types of nephrotoxicity models (in vivo and in vitro models), and the research progress related to drug-induced nephrotoxicity in three-dimensional (3D) cellular culture models.
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Affiliation(s)
- Pengfei Yu
- Difficult & Complicated Liver Diseases and Artificial Liver Center, Fourth Department of Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China; (P.Y.); (Z.D.); (S.L.)
- Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Zhongping Duan
- Difficult & Complicated Liver Diseases and Artificial Liver Center, Fourth Department of Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China; (P.Y.); (Z.D.); (S.L.)
- Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Shuang Liu
- Difficult & Complicated Liver Diseases and Artificial Liver Center, Fourth Department of Liver Disease, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China; (P.Y.); (Z.D.); (S.L.)
- Beijing Municipal Key Laboratory of Liver Failure and Artificial Liver Treatment Research, Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Ivan Pachon
- Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences, Winston-Salem, NC 27157, USA;
| | - Jianxing Ma
- Department of Biochemistry, Wake Forest University Health Sciences, Winston-Salem, NC 27157, USA;
| | | | - Yuanyuan Zhang
- Wake Forest Institute for Regenerative Medicine, Wake Forest University Health Sciences, Winston-Salem, NC 27157, USA;
- Correspondence: ; Tel.: +1-336-713-1189
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Grubb ML, Caliari SR. Fabrication approaches for high-throughput and biomimetic disease modeling. Acta Biomater 2021; 132:52-82. [PMID: 33716174 PMCID: PMC8433272 DOI: 10.1016/j.actbio.2021.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 02/15/2021] [Accepted: 03/02/2021] [Indexed: 12/24/2022]
Abstract
There is often a tradeoff between in vitro disease modeling platforms that capture pathophysiologic complexity and those that are amenable to high-throughput fabrication and analysis. However, this divide is closing through the application of a handful of fabrication approaches-parallel fabrication, automation, and flow-driven assembly-to design sophisticated cellular and biomaterial systems. The purpose of this review is to highlight methods for the fabrication of high-throughput biomaterial-based platforms and showcase examples that demonstrate their utility over a range of throughput and complexity. We conclude with a discussion of future considerations for the continued development of higher-throughput in vitro platforms that capture the appropriate level of biological complexity for the desired application. STATEMENT OF SIGNIFICANCE: There is a pressing need for new biomedical tools to study and understand disease. These platforms should mimic the complex properties of the body while also permitting investigation of many combinations of cells, extracellular cues, and/or therapeutics in high-throughput. This review summarizes emerging strategies to fabricate biomimetic disease models that bridge the gap between complex tissue-mimicking microenvironments and high-throughput screens for personalized medicine.
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Affiliation(s)
- Mackenzie L Grubb
- Department of Biomedical Engineering, University of Virginia, Unites States
| | - Steven R Caliari
- Department of Biomedical Engineering, University of Virginia, Unites States; Department of Chemical Engineering, University of Virginia, Unites States.
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5
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Potential and Limits of Kidney Cells for Evaluation of Renal Excretion. Pharmaceuticals (Basel) 2021; 14:ph14090908. [PMID: 34577608 PMCID: PMC8464824 DOI: 10.3390/ph14090908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 12/02/2022] Open
Abstract
A large number of therapeutic drugs, herbal components and their metabolites are excreted by the kidneys. Therefore, generally applied models for estimating renal excretion, including freshly isolated rat proximal tubule cells, cultured tubule cells and immortalized kidney cell lines MDCKII, NRK-52E, IHKE-1 and Caki-1, were investigated regarding their predictive potential for active renal transport. Cultured proximal tubule cells showed an epithelial cell-like morphology and formed tight monolayers. However, mRNA expression analyses and immunohistochemical studies revealed patterns of tight junction proteins that were notably different from freshly isolated cells and distinct from those in vivo. High levels of mannitol permeation were found in NRK-52E, IHKE-1 and Caki-1 cells, suggesting that they are not suitable for bidirectional transport studies. Cultured cells and freshly isolated cells also differed in proximal tubule markers and transport proteins, indicating that cultured primary cells were in a state of dedifferentiation. Cell lines MDCKII, NRK-52E, IHKE-1 and Caki-1 did not accurately reflect the characteristics of proximal tubules. The expression patterns of marker and transport proteins differed from freshly isolated primary cells. In summary, each of these models has profound disadvantages to consider when adopting them reliable models for the in vivo situation. Thus, they should not be used alone but only in combination.
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Szymkowiak S, Sandler N, Kaplan DL. Aligned Silk Sponge Fabrication and Perfusion Culture for Scalable Proximal Tubule Tissue Engineering. ACS APPLIED MATERIALS & INTERFACES 2021; 13:10768-10777. [PMID: 33621042 DOI: 10.1021/acsami.1c00548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Chronic kidney disease and kidney failure are on the rise globally, yet there has not been a corresponding improvement in available therapies. A key challenge in a biological approach to developing kidney tissue is to identify scaffolding materials that support cell growth both in vitro and in vivo to facilitate translational goals. Scaffolds composed of silk fibroin protein possess the biocompatibility, mechanical robustness, and stability required for tissue engineering. Here, we use a silk sponge system to support kidney cells in a perfused bioreactor system. Silk fibroin protein underwent directional freezing to form parallel porous structures that mimic the native kidney structure of aligned tubules and are able to support more cells than nonaligned silk sponges. Adult immortalized renal proximal tubule epithelial cells were seeded into the sponges and cultured under static conditions for 1 week, then grown statically or with perfusion with culture media flowing through the sponge to enhance cell alignment and maturation. The sponges were imaged with confocal and scanning electron microscopies to analyze and quantify cell attachment, alignment, and expression of proteins important to proximal tubule differentiation and function. The perfused tissue constructs showed higher number of cells that are more evenly distributed through the construct and increased gene expression of several key markers of proximal tubule epithelial cell function compared to sponges grown under static conditions. These perfused tissue constructs represent a step toward a scalable approach to engineering proximal tubule structures with the potential to be used as in vitro models or as in vivo implantable tissues to supplement or replace impaired kidney function.
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Affiliation(s)
- Sophia Szymkowiak
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Nathan Sandler
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, United States
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Sobreiro‐Almeida R, Melica ME, Lasagni L, Romagnani P, Neves NM. Co-cultures of renal progenitors and endothelial cells on kidney decellularized matrices replicate the renal tubular environment in vitro. Acta Physiol (Oxf) 2020; 230:e13491. [PMID: 32365407 DOI: 10.1111/apha.13491] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 12/22/2022]
Abstract
AIM Herein we propose creating a bilayer tubular kidney in-vitro model. It is hypothesized that membranes composed of decellularized porcine kidney extracellular matrix are valid substitutes of the tubular basement membrane by mimicking the physiological relevance of the in vivo environment and disease phenotypes. METHODS Extracellular matrix was obtained from decellularized porcine kidneys. After processing by lyophilization and milling, it was dissolved in an organic solvent and blended with poly(caprolactone). Porous membranes were obtained by electrospinning and seeded with human primary renal progenitor cells to evaluate phenotypic alterations. To create a bilayer model of the in vivo tubule, the same cells were differentiated into epithelial tubular cells and co-cultured with endothelial cells in opposite sites. RESULTS Our results demonstrate increasing metabolic activity, proliferation and total protein content of renal progenitors over time. We confirmed the expression of several genes encoding epithelial transport proteins and we could also detect tubular-specific proteins by immunofluorescence stainings. Functional and transport assays were performed trough the bilayer by quantifying both human serum albumin uptake and inulin leakage. Furthermore, we validated the chemical modulation of nephrotoxicity on this epithelium-endothelium model by cisplatin exposure. CONCLUSION The use of decellularized matrices in combination with primary renal cells was shown to be a valuable tool for modelling renal function and disease in vitro. We successfully validated our hypothesis by replicating the physiological conditions of an in vitro tubular bilayer model. The developed system may contribute significantly for the future investigation of advanced therapies for kidney diseases.
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Affiliation(s)
- Rita Sobreiro‐Almeida
- 3B's Research Group I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics University of Minho Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Barco Portugal
- ICVS/3B’s – PT Government Associate Laboratory Braga/Guimarães Portugal
| | - Maria Elena Melica
- Department of Clinical and Experimental Biomedical Sciences “Mario Serio” University of Florence Florence Italy
- Excellence Centre for Research Transfer and High Education for the Development of DE NOVO Therapies Florence Italy
| | - Laura Lasagni
- Department of Clinical and Experimental Biomedical Sciences “Mario Serio” University of Florence Florence Italy
- Excellence Centre for Research Transfer and High Education for the Development of DE NOVO Therapies Florence Italy
| | - Paola Romagnani
- Department of Clinical and Experimental Biomedical Sciences “Mario Serio” University of Florence Florence Italy
- Excellence Centre for Research Transfer and High Education for the Development of DE NOVO Therapies Florence Italy
- Nephrology and Dialysis Unit Meyer Children’s University Hospital Florence Italy
| | - Nuno M. Neves
- 3B's Research Group I3Bs – Research Institute on Biomaterials, Biodegradables and Biomimetics University of Minho Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine Barco Portugal
- ICVS/3B’s – PT Government Associate Laboratory Braga/Guimarães Portugal
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Mossoba ME, Sprando RL. In Vitro to In Vivo Concordance of Toxicity Using the Human Proximal Tubule Cell Line HK-2. Int J Toxicol 2020; 39:452-464. [PMID: 32723106 DOI: 10.1177/1091581820942534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The renal proximal tubule cell line, human kidney 2 (HK-2), recapitulates many of the functional cellular and molecular characteristics of differentiated primary proximal tubule cells. These features include anchorage dependence, gluconeogenesis capability, and sodium-dependent sugar transport. In order to ascertain how well HK-2 cells can reliably reveal the toxicological profile of compounds having a potential to cause proximal tubule injury in vivo, we sought to evaluate the effects of known proximal tubule toxicants using the HK-2 cell line. We selected 20 pure nephrotoxic compounds that included chemotherapeutic drugs, antibiotics, and heavy metal-containing compounds and evaluated their ability to induce HK-2 cell injury relative to 10 innocuous pure compounds or cell culture media alone. We performed a comprehensive set of in vitro cellular toxicological assays to evaluate cell viability, oxidative stress, mitochondrial integrity, and a specific biomarker of renal injury, Kidney Injury Molecule 1. For each of our selected compounds, we were able to establish a reproducible profile of toxicological outcomes. We compared our results to those described in peer-reviewed publications to understand how well the HK-2 cellular model agrees with overall in vivo rat or human toxicological outcomes. This study begins to address the question of how well in vitro data generated with HK-2 cells can mirror in vivo animal and human outcomes.
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Affiliation(s)
- Miriam E Mossoba
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, 4137US Food and Drug Administration, Laurel, MD, USA
| | - Robert L Sprando
- Division of Toxicology, Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, 4137US Food and Drug Administration, Laurel, MD, USA
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9
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van der Wijst J, Belge H, Bindels RJM, Devuyst O. Learning Physiology From Inherited Kidney Disorders. Physiol Rev 2019; 99:1575-1653. [PMID: 31215303 DOI: 10.1152/physrev.00008.2018] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The identification of genes causing inherited kidney diseases yielded crucial insights in the molecular basis of disease and improved our understanding of physiological processes that operate in the kidney. Monogenic kidney disorders are caused by mutations in genes coding for a large variety of proteins including receptors, channels and transporters, enzymes, transcription factors, and structural components, operating in specialized cell types that perform highly regulated homeostatic functions. Common variants in some of these genes are also associated with complex traits, as evidenced by genome-wide association studies in the general population. In this review, we discuss how the molecular genetics of inherited disorders affecting different tubular segments of the nephron improved our understanding of various transport processes and of their involvement in homeostasis, while providing novel therapeutic targets. These include inherited disorders causing a dysfunction of the proximal tubule (renal Fanconi syndrome), with emphasis on epithelial differentiation and receptor-mediated endocytosis, or affecting the reabsorption of glucose, the handling of uric acid, and the reabsorption of sodium, calcium, and magnesium along the kidney tubule.
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Affiliation(s)
- Jenny van der Wijst
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Nijmegen , The Netherlands ; Institute of Physiology, University of Zurich , Zurich , Switzerland ; and Division of Nephrology, Institute of Experimental and Clinical Research (IREC), Medical School, Université catholique de Louvain, Brussels, Belgium
| | - Hendrica Belge
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Nijmegen , The Netherlands ; Institute of Physiology, University of Zurich , Zurich , Switzerland ; and Division of Nephrology, Institute of Experimental and Clinical Research (IREC), Medical School, Université catholique de Louvain, Brussels, Belgium
| | - René J M Bindels
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Nijmegen , The Netherlands ; Institute of Physiology, University of Zurich , Zurich , Switzerland ; and Division of Nephrology, Institute of Experimental and Clinical Research (IREC), Medical School, Université catholique de Louvain, Brussels, Belgium
| | - Olivier Devuyst
- Department of Physiology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center , Nijmegen , The Netherlands ; Institute of Physiology, University of Zurich , Zurich , Switzerland ; and Division of Nephrology, Institute of Experimental and Clinical Research (IREC), Medical School, Université catholique de Louvain, Brussels, Belgium
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Prange JA, Aleandri S, Komisarski M, Luciani A, Käch A, Schuh CD, Hall AM, Mezzenga R, Devuyst O, Landau EM. Overcoming Endocytosis Deficiency by Cubosome Nanocarriers. ACS APPLIED BIO MATERIALS 2019; 2:2490-2499. [DOI: 10.1021/acsabm.9b00187] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jenny A. Prange
- Institute of Physiology, University of Zurich, Zurich 8057, Switzerland
| | - Simone Aleandri
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
| | - Marek Komisarski
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
| | | | - Andres Käch
- Center for Microscopy and Image Analysis, University of Zurich, Zurich 8057, Switzerland
| | | | - Andrew M. Hall
- Institute of Anatomy, University of Zurich, Zurich 8057, Switzerland
| | - Raffaele Mezzenga
- Department of Health Sciences & Technology, ETH Zurich, Zurich 8092, Switzerland
| | - Olivier Devuyst
- Institute of Physiology, University of Zurich, Zurich 8057, Switzerland
| | - Ehud M. Landau
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
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Impaired autophagy bridges lysosomal storage disease and epithelial dysfunction in the kidney. Nat Commun 2018; 9:161. [PMID: 29323117 PMCID: PMC5765140 DOI: 10.1038/s41467-017-02536-7] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 12/07/2017] [Indexed: 01/23/2023] Open
Abstract
The endolysosomal system sustains the reabsorptive activity of specialized epithelial cells. Lysosomal storage diseases such as nephropathic cystinosis cause a major dysfunction of epithelial cells lining the kidney tubule, resulting in massive losses of vital solutes in the urine. The mechanisms linking lysosomal defects and epithelial dysfunction remain unknown, preventing the development of disease-modifying therapies. Here we demonstrate, by combining genetic and pharmacologic approaches, that lysosomal dysfunction in cystinosis results in defective autophagy-mediated clearance of damaged mitochondria. This promotes the generation of oxidative stress that stimulates Gα12/Src-mediated phosphorylation of tight junction ZO-1 and triggers a signaling cascade involving ZO-1-associated Y-box factor ZONAB, which leads to cell proliferation and transport defects. Correction of the primary lysosomal defect, neutralization of mitochondrial oxidative stress, and blockage of tight junction-associated ZONAB signaling rescue the epithelial function. We suggest a link between defective lysosome-autophagy degradation pathways and epithelial dysfunction, providing new therapeutic perspectives for lysosomal storage disorders.
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Wang S, Wang X, Boone J, Wie J, Yip KP, Zhang J, Wang L, Liu R. Application of Hanging Drop Technique for Kidney Tissue Culture. Kidney Blood Press Res 2017; 42:220-231. [PMID: 28478441 PMCID: PMC6050513 DOI: 10.1159/000476018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 02/07/2017] [Indexed: 12/13/2022] Open
Abstract
Background/Aims The hanging drop technique is a well-established method used in culture of animal tissues. However, this method has not been used in adult kidney tissue culture yet. This study was to explore the feasibility of using this technique for culturing adult kidney cortex to study the time course of RNA viability in the tubules and vasculature, as well as the tissue structural integrity. Methods In each Petri dish with the plate covered with sterile buffer, a section of mouse renal cortex was cultured within a drop of DMEM culture medium on the inner surface of the lip facing downward. The tissue were then harvested at each specific time points for Real-time PCR analysis and histological studies. Results The results showed that the mRNA level of most Na+ related transporters and cotransporters were stably maintained within 6 hours in culture, and that the mRNA level of most receptors found in the vasculature and glomeruli were stably maintained for up to 9 days in culture. Paraffin sections of the cultured renal cortex indicated that the tubules began to lose tubular integrity after 6 hours, but the glomeruli and vasculatures were still recognizable up to 9 days in culture. Conclusions We concluded that adult kidney tissue culture by hanging drop method can be used to study gene expressions in vasculature and glomeruli.
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Affiliation(s)
- Shaohui Wang
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Ximing Wang
- Present Address: Shandong Medical Imaging Research Institute, Shandong provincial key laboratory of diagnosis and treatment of cardio-cerebral vascular disease, Shandong University, Jinan, China
| | - Jasmine Boone
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Jin Wie
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Kay-Pong Yip
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Jie Zhang
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Lei Wang
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
| | - Ruisheng Liu
- Department of Molecular Pharmacology & Physiology, University of South Florida Morsani College of Medicine, Tampa, Florida, USA
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13
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Zuppinger C. Edge-Detection for Contractility Measurements with Cardiac Spheroids. METHODS IN PHARMACOLOGY AND TOXICOLOGY 2017. [DOI: 10.1007/978-1-4939-6661-5_11] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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