1
|
Kliewe F, Siegerist F, Hammer E, Al-Hasani J, Amling TRJ, Hollemann JZE, Schindler M, Drenic V, Simm S, Amann K, Daniel C, Lindenmeyer M, Hecker M, Völker U, Endlich N. Zyxin is important for the stability and function of podocytes, especially during mechanical stretch. Commun Biol 2024; 7:446. [PMID: 38605154 PMCID: PMC11009394 DOI: 10.1038/s42003-024-06125-5] [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: 07/18/2023] [Accepted: 03/29/2024] [Indexed: 04/13/2024] Open
Abstract
Podocyte detachment due to mechanical stress is a common issue in hypertension-induced kidney disease. This study highlights the role of zyxin for podocyte stability and function. We have found that zyxin is significantly up-regulated in podocytes after mechanical stretch and relocalizes from focal adhesions to actin filaments. In zyxin knockout podocytes, we found that the loss of zyxin reduced the expression of vinculin and VASP as well as the expression of matrix proteins, such as fibronectin. This suggests that zyxin is a central player in the translation of mechanical forces in podocytes. In vivo, zyxin is highly up-regulated in patients suffering from diabetic nephropathy and in hypertensive DOCA-salt treated mice. Furthermore, zyxin loss in mice resulted in proteinuria and effacement of podocyte foot processes that was measured by super resolution microscopy. This highlights the essential role of zyxin for podocyte maintenance in vitro and in vivo, especially under mechanical stretch.
Collapse
Affiliation(s)
- Felix Kliewe
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany.
| | - Florian Siegerist
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | - Elke Hammer
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Jaafar Al-Hasani
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg, Germany
| | | | | | - Maximilian Schindler
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | - Vedran Drenic
- NIPOKA GmbH, Center of High-End Imaging, Greifswald, Germany
| | - Stefan Simm
- Institute of Bioinformatics, University Medicine Greifswald, Greifswald, Germany
| | - Kerstin Amann
- Department of Nephropathology; Friedrich-Alexander University (FAU) Erlangen-Nuremberg, Erlangen, Germany
| | - Christoph Daniel
- Department of Nephropathology; Friedrich-Alexander University (FAU) Erlangen-Nuremberg, Erlangen, Germany
| | - Maja Lindenmeyer
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Hamburg Center for Kidney Health (HCKH), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Hecker
- Department of Cardiovascular Physiology, Heidelberg University, Heidelberg, Germany
| | - Uwe Völker
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Nicole Endlich
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
- NIPOKA GmbH, Center of High-End Imaging, Greifswald, Germany
| |
Collapse
|
2
|
Manoharan J, Rana R, Kuenze G, Gupta D, Elwakiel A, Ambreen S, Wang H, Banerjee K, Zimmermann S, Singh K, Gupta A, Fatima S, Kretschmer S, Schaefer L, Zeng-Brouwers J, Schwab C, Al-Dabet MM, Gadi I, Altmann H, Koch T, Poitz DM, Baber R, Kohli S, Shahzad K, Geffers R, Lee-Kirsch MA, Kalinke U, Meiler J, Mackman N, Isermann B. Tissue factor binds to and inhibits interferon-α receptor 1 signaling. Immunity 2024; 57:68-85.e11. [PMID: 38141610 DOI: 10.1016/j.immuni.2023.11.017] [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: 08/14/2022] [Revised: 08/02/2023] [Accepted: 11/28/2023] [Indexed: 12/25/2023]
Abstract
Tissue factor (TF), which is a member of the cytokine receptor family, promotes coagulation and coagulation-dependent inflammation. TF also exerts protective effects through unknown mechanisms. Here, we showed that TF bound to interferon-α receptor 1 (IFNAR1) and antagonized its signaling, preventing spontaneous sterile inflammation and maintaining immune homeostasis. Structural modeling and direct binding studies revealed binding of the TF C-terminal fibronectin III domain to IFNAR1, which restricted the expression of interferon-stimulated genes (ISGs). Podocyte-specific loss of TF in mice (PodΔF3) resulted in sterile renal inflammation, characterized by JAK/STAT signaling, proinflammatory cytokine expression, disrupted immune homeostasis, and glomerulopathy. Inhibiting IFNAR1 signaling or loss of Ifnar1 expression in podocytes attenuated these effects in PodΔF3 mice. As a heteromer, TF and IFNAR1 were both inactive, while dissociation of the TF-IFNAR1 heteromer promoted TF activity and IFNAR1 signaling. These data suggest that the TF-IFNAR1 heteromer is a molecular switch that controls thrombo-inflammation.
Collapse
Affiliation(s)
- Jayakumar Manoharan
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Rajiv Rana
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Georg Kuenze
- Institute for Drug Discovery, Leipzig University Medical School, Leipzig, Germany
| | - Dheerendra Gupta
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Ahmed Elwakiel
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Saira Ambreen
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Hongjie Wang
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kuheli Banerjee
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Silke Zimmermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Kunal Singh
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Anubhuti Gupta
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Sameen Fatima
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Stefanie Kretschmer
- Department of Pediatrics, University Hospital and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Liliana Schaefer
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt am Main, Germany
| | - Jinyang Zeng-Brouwers
- Institute of Pharmacology and Toxicology, Goethe University, Frankfurt am Main, Germany
| | - Constantin Schwab
- Tissue Bank of the National Center for Tumor Diseases, Heidelberg, Germany
| | - Moh'd Mohanad Al-Dabet
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Ihsan Gadi
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Heidi Altmann
- Dresden Integrated Liquid Biobank, Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany; Medical Department I, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Thea Koch
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - David M Poitz
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Ronny Baber
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany; Leipzig Medical Biobank, Leipzig University, Leipzig, Germany
| | - Shrey Kohli
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Khurrum Shahzad
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany
| | - Robert Geffers
- Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Min Ae Lee-Kirsch
- Department of Pediatrics, University Hospital and Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Ulrich Kalinke
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, 30625 Hannover, Germany
| | - Jens Meiler
- Institute for Drug Discovery, Leipzig University Medical School, Leipzig, Germany
| | - Nigel Mackman
- Division of Hematology, Department of Medicine, UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Berend Isermann
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostic, University Hospital, Leipzig, Germany.
| |
Collapse
|
3
|
Carriazo S, Abasheva D, Duarte D, Ortiz A, Sanchez-Niño MD. SCARF Genes in COVID-19 and Kidney Disease: A Path to Comorbidity-Specific Therapies. Int J Mol Sci 2023; 24:16078. [PMID: 38003268 PMCID: PMC10671056 DOI: 10.3390/ijms242216078] [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: 09/21/2023] [Revised: 10/29/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) causes coronavirus disease 2019 (COVID-19), which has killed ~7 million persons worldwide. Chronic kidney disease (CKD) is the most common risk factor for severe COVID-19 and one that most increases the risk of COVID-19-related death. Moreover, CKD increases the risk of acute kidney injury (AKI), and COVID-19 patients with AKI are at an increased risk of death. However, the molecular basis underlying this risk has not been well characterized. CKD patients are at increased risk of death from multiple infections, to which immune deficiency in non-specific host defenses may contribute. However, COVID-19-associated AKI has specific molecular features and CKD modulates the local (kidney) and systemic (lung, aorta) expression of host genes encoding coronavirus-associated receptors and factors (SCARFs), which SARS-CoV-2 hijacks to enter cells and replicate. We review the interaction between kidney disease and COVID-19, including the over 200 host genes that may influence the severity of COVID-19, and provide evidence suggesting that kidney disease may modulate the expression of SCARF genes and other key host genes involved in an effective adaptive defense against coronaviruses. Given the poor response of certain CKD populations (e.g., kidney transplant recipients) to SARS-CoV-2 vaccines and their suboptimal outcomes when infected, we propose a research agenda focusing on CKD to develop the concept of comorbidity-specific targeted therapeutic approaches to SARS-CoV-2 infection or to future coronavirus infections.
Collapse
Affiliation(s)
- Sol Carriazo
- Division of Nephrology, Department of Medicine, University Health Network, University of Toronto, Toronto, ON M5G 2C4, Canada;
- RICORS2040, 28049 Madrid, Spain;
| | - Daria Abasheva
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, 28049 Madrid, Spain; (D.A.); (D.D.)
| | - Deborah Duarte
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, 28049 Madrid, Spain; (D.A.); (D.D.)
| | - Alberto Ortiz
- RICORS2040, 28049 Madrid, Spain;
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, 28049 Madrid, Spain; (D.A.); (D.D.)
- Departamento de Medicina, Facultad de Medicina, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Maria Dolores Sanchez-Niño
- RICORS2040, 28049 Madrid, Spain;
- Department of Nephrology and Hypertension, IIS-Fundacion Jimenez Diaz UAM, 28049 Madrid, Spain; (D.A.); (D.D.)
- Departamento de Farmacología, Facultad de Medicina, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| |
Collapse
|
4
|
Wei J, Tan F, Long X, Fang Q, Wang Y, Wang J, He J, Yuan X, Du J. RNA-Seq transcriptome analysis of renal tissue from spontaneously hypertensive rats revealed renal protective effects of dapagliflozin, an inhibitor of sodium-glucose cotransporter 2. Eur J Pharm Sci 2023; 189:106531. [PMID: 37479045 DOI: 10.1016/j.ejps.2023.106531] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/10/2023] [Accepted: 07/14/2023] [Indexed: 07/23/2023]
Abstract
Hypertensive nephropathy (HTN) is a common complication of hypertension. Although various agents for treatment of hypertension exert significant effects, there is currently no effective treatment for hypertensive nephropathy. Sodium-glucose cotransporter 2 (SGLT2) inhibitors, such as dapagliflozin (DAPA), are a new class of hypoglycemic agents shown to improve the prognosis of patients with chronic kidney disease and diabetes mellitus. However, the mechanisms underlying the protective effects of DAPA remain unclear. RNA-sequencing (RNA-Seq)-based computational analysis was conducted to explore the transcriptomic changes to spontaneously hypertensive rats (SHRs) treated with DAPA for 8 weeks. Differentially expressed genes in SHRs were related to dysregulation of lipid metabolism, oxidation-reduction reaction, immunity and inflammation in HTN. Transcriptome analysis showed that 8 weeks of DAPA therapy exerted protective effects on the renal tissues of SHRs through the lysosomal, phagosomal, and autophagic pathways. VENN diagram analysis identified Zinc finger and BTB domain-containing 20 (Zbtb20) as the potential target of DAPA therapy. Consistent with the RNA-Seq findings, real-time quantitative PCR and immunohistochemical analyses revealed increased expression of Zbtb20 in the renal tissues of SHRs, whereas expression was decreased following 8 weeks of DAPA administration. The results of this study clarified the transcriptome signature of HTN and the beneficial effects of DAPA on renal tissues by alleviating dysregulation of metabolic processes and reducing inflammation.
Collapse
Affiliation(s)
- Jiangjun Wei
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Fangyan Tan
- Department of Nephrology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 4000l0, China
| | - Xianglin Long
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Qinghua Fang
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Yao Wang
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Jing Wang
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - JiaCheng He
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Xin Yuan
- Department of Nephrology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 4000l0, China.
| | - Jianlin Du
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
| |
Collapse
|
5
|
Añazco C, Riedelsberger J, Vega-Montoto L, Rojas A. Exploring the Interplay between Polyphenols and Lysyl Oxidase Enzymes for Maintaining Extracellular Matrix Homeostasis. Int J Mol Sci 2023; 24:10985. [PMID: 37446164 DOI: 10.3390/ijms241310985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/26/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
Collagen, the most abundant structural protein found in mammals, plays a vital role as a constituent of the extracellular matrix (ECM) that surrounds cells. Collagen fibrils are strengthened through the formation of covalent cross-links, which involve complex enzymatic and non-enzymatic reactions. Lysyl oxidase (LOX) is responsible for catalyzing the oxidative deamination of lysine and hydroxylysine residues, resulting in the production of aldehydes, allysine, and hydroxyallysine. These intermediates undergo spontaneous condensation reactions, leading to the formation of immature cross-links, which are the initial step in the development of mature covalent cross-links. Additionally, non-enzymatic glycation contributes to the formation of abnormal cross-linking in collagen fibrils. During glycation, specific lysine and arginine residues in collagen are modified by reducing sugars, leading to the creation of Advanced Glycation End-products (AGEs). These AGEs have been associated with changes in the mechanical properties of collagen fibers. Interestingly, various studies have reported that plant polyphenols possess amine oxidase-like activity and can act as potent inhibitors of protein glycation. This review article focuses on compiling the literature describing polyphenols with amine oxidase-like activity and antiglycation properties. Specifically, we explore the molecular mechanisms by which specific flavonoids impact or protect the normal collagen cross-linking process. Furthermore, we discuss how these dual activities can be harnessed to generate properly cross-linked collagen molecules, thereby promoting the stabilization of highly organized collagen fibrils.
Collapse
Affiliation(s)
- Carolina Añazco
- Laboratorio de Bioquímica Nutricional, Escuela de Nutrición y Dietética, Carrera de Nutrición y Dietética, Facultad de Ciencias para el Cuidado de la Salud, Universidad San Sebastián, General Lagos #1190, Valdivia 5110773, Chile
| | - Janin Riedelsberger
- Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, 1 Poniente 1141, Talca 3462227, Chile
| | - Lorenzo Vega-Montoto
- Chemical and Radiation Measurement, Idaho National Laboratory (INL), 1705 N. Yellowstone Hwy, Idaho Falls, ID 83415, USA
| | - Armando Rojas
- Biomedical Research Laboratories, Medicine Faculty, Catholic University of Maule, Talca 3480112, Chile
| |
Collapse
|
6
|
Stem Cells in Kidney Ischemia: From Inflammation and Fibrosis to Renal Tissue Regeneration. Int J Mol Sci 2023; 24:ijms24054631. [PMID: 36902062 PMCID: PMC10002584 DOI: 10.3390/ijms24054631] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 02/19/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023] Open
Abstract
Ischemic nephropathy consists of progressive renal function loss due to renal hypoxia, inflammation, microvascular rarefaction, and fibrosis. We provide a literature review focused on kidney hypoperfusion-dependent inflammation and its influence on renal tissue's ability to self-regenerate. Moreover, an overview of the advances in regenerative therapy with mesenchymal stem cell (MSC) infusion is provided. Based on our search, we can point out the following conclusions: 1. endovascular reperfusion is the gold-standard therapy for RAS, but its success mostly depends on treatment timeliness and a preserved downstream vascular bed; 2. anti-RAAS drugs, SGLT2 inhibitors, and/or anti-endothelin agents are especially recommended for patients with renal ischemia who are not eligible for endovascular reperfusion for slowing renal damage progression; 3. TGF-β, MCP-1, VEGF, and NGAL assays, along with BOLD MRI, should be extended in clinical practice and applied to a pre- and post-revascularization protocols; 4. MSC infusion appears effective in renal regeneration and could represent a revolutionary treatment for patients with fibrotic evolution of renal ischemia.
Collapse
|
7
|
Shikhevich S, Chadaeva I, Khandaev B, Kozhemyakina R, Zolotareva K, Kazachek A, Oshchepkov D, Bogomolov A, Klimova NV, Ivanisenko VA, Demenkov P, Mustafin Z, Markel A, Savinkova L, Kolchanov NA, Kozlov V, Ponomarenko M. Differentially Expressed Genes and Molecular Susceptibility to Human Age-Related Diseases. Int J Mol Sci 2023; 24:ijms24043996. [PMID: 36835409 PMCID: PMC9966505 DOI: 10.3390/ijms24043996] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/02/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Mainstream transcriptome profiling of susceptibility versus resistance to age-related diseases (ARDs) is focused on differentially expressed genes (DEGs) specific to gender, age, and pathogeneses. This approach fits in well with predictive, preventive, personalized, participatory medicine and helps understand how, why, when, and what ARDs one can develop depending on their genetic background. Within this mainstream paradigm, we wanted to find out whether the known ARD-linked DEGs available in PubMed can reveal a molecular marker that will serve the purpose in anyone's any tissue at any time. We sequenced the periaqueductal gray (PAG) transcriptome of tame versus aggressive rats, identified rat-behavior-related DEGs, and compared them with their known homologous animal ARD-linked DEGs. This analysis yielded statistically significant correlations between behavior-related and ARD-susceptibility-related fold changes (log2 values) in the expression of these DEG homologs. We found principal components, PC1 and PC2, corresponding to the half-sum and the half-difference of these log2 values, respectively. With the DEGs linked to ARD susceptibility and ARD resistance in humans used as controls, we verified these principal components. This yielded only one statistically significant common molecular marker for ARDs: an excess of Fcγ receptor IIb suppressing immune cell hyperactivation.
Collapse
Affiliation(s)
- Svetlana Shikhevich
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Irina Chadaeva
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Bato Khandaev
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Rimma Kozhemyakina
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Karina Zolotareva
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Anna Kazachek
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Dmitry Oshchepkov
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Anton Bogomolov
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Natalya V. Klimova
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Vladimir A. Ivanisenko
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Pavel Demenkov
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Zakhar Mustafin
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Arcady Markel
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Ludmila Savinkova
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Nikolay A. Kolchanov
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- The Natural Sciences Department, Novosibirsk State University, Novosibirsk 630090, Russia
| | - Vladimir Kozlov
- Research Institute of Fundamental and Clinical Immunology (RIFCI) SB RAS, Novosibirsk 630099, Russia
| | - Mikhail Ponomarenko
- Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
- Correspondence: ; Tel.: +7-(383)-363-4963 (ext. 1311)
| |
Collapse
|
8
|
A Tissue-Specific and Toxicology-Focused Knowledge Graph. INFORMATION 2023. [DOI: 10.3390/info14020091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Molecular biology-focused knowledge graphs (KGs) are directed graphs that integrate information from heterogeneous sources of biological and biomedical data, such as ontologies and public databases. They provide a holistic view of biology, chemistry, and disease, allowing users to draw non-obvious connections between concepts through shared associations. While these massive graphs are constructed using carefully curated ontologies and annotations from public databases, much of the information relating the concepts is context specific. Two important variables that determine the applicability of a given ontology annotation are the species and (especially) the tissue type in which it takes place. Using a data-driven approach and the results from thousands of high-quality gene expression samples, we have constructed tissue-specific KGs (using liver, kidney, and heart as examples) that empirically validate the annotations provided by ontology curators. The resulting human-centered KGs are designed for toxicology applications but are generalizable to other areas of human biology, addressing the issue of tissue specificity that often limits the applicability of other large KGs. These knowledge graphs can serve as valuable tools for generating transparent explanations of experimental results in the form of mechanistic hypotheses that are highly relevant to the studied tissue. Because the data-driven relations are derived from a large collection of human in vitro data, these KGs are particularly well suited for in vitro toxicology applications.
Collapse
|
9
|
Denicolò S, Nair V, Leierer J, Rudnicki M, Kretzler M, Mayer G, Ju W, Perco P. Assessment of Fibrinogen-like 2 (FGL2) in Human Chronic Kidney Disease through Transcriptomics Data Analysis. Biomolecules 2022; 13:89. [PMID: 36671474 PMCID: PMC9855364 DOI: 10.3390/biom13010089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 01/03/2023] Open
Abstract
Fibrinogen-like 2 (FGL2) was recently found to be associated with fibrosis in a mouse model of kidney damage and was proposed as a potential therapeutic target in chronic kidney disease (CKD). We assessed the association of renal FGL2 mRNA expression with the disease outcome in two independent CKD cohorts (NEPTUNE and Innsbruck CKD cohort) using Kaplan Meier survival analysis. The regulation of FGL2 in kidney biopsies of CKD patients as compared to healthy controls was further assessed in 13 human CKD transcriptomics datasets. The FGL2 protein expression in human renal tissue sections was determined via immunohistochemistry. The regulators of FGL2 mRNA expression in renal tissue were identified in the co-expression and upstream regulator analysis of FGL2-positive renal cells via the use of single-cell RNA sequencing data from the kidney precision medicine project (KPMP). Higher renal FGL2 mRNA expression was positively associated with kidney fibrosis and negatively associated with eGFR. Renal FGL2 mRNA expression was upregulated in CKD as compared with healthy controls and associated with CKD progression in the Innsbruck CKD cohort (p-value = 0.0036) and NEPTUNE cohort (p-value = 0.0048). The highest abundance of FGL2 protein in renal tissue was detected in the thick ascending limb of the loop of Henle and macula densa, proximal tubular cells, as well as in glomerular endothelial cells. The upstream regulator analysis identified TNF, IL1B, IFNG, NFKB1, and SP1 as factors potentially inducing FGL2-co-expressed genes, whereas factors counterbalancing FGL2-co-expressed genes included GLI1, HNF1B, or PPARGC1A. In conclusion, renal FGL2 mRNA expression is elevated in human CKD, and higher FGL2 levels are associated with fibrosis and worse outcomes.
Collapse
Affiliation(s)
- Sara Denicolò
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Viji Nair
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
| | - Johannes Leierer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Michael Rudnicki
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Matthias Kretzler
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Gert Mayer
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, 6020 Innsbruck, Austria
| | - Wenjun Ju
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109, USA
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Paul Perco
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, 6020 Innsbruck, Austria
| |
Collapse
|
10
|
Fang J, Weng Y, Li B, Liu H, Liu L, Tian Z, Du S. Graphene oxide decreases the abundance of nitrogen cycling microbes and slows nitrogen transformation in soils. CHEMOSPHERE 2022; 309:136642. [PMID: 36202372 DOI: 10.1016/j.chemosphere.2022.136642] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/24/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Graphene oxide (GO) has been widely used in many applications due to its excellent properties. Given the extensive production and use of this nanomaterial, its release into the environment is inevitable. However, little is known about the effects of GO on microbial nitrogen transformation and the related processes after GO enters the soil environment. The present study showed that GO significantly reduced soil microbial biomass and caused a decline in microbial diversity after the soils were subjected to various GO concentrations (10, 100, and 1000 mg kg-1) for 4 months. Among them, the abundances of nitrogen transformation related bacteria such as Firmicutes, Nitrospirota, Proteobacteria, Planctomycetota, and Cyanobacteria were significantly decreased with GO incubation. Among the enzymes that are related to nitrogen transformation, nitrate reductase was the most sensitive even at low concentrations of GO, followed by ammonia monooxygenase and urease, which were reduced by 13-31%, 5-26%, and 9-19% respectively, than those of the control. We found that high concentrations of GO significantly increased the retention of soil urea by 32-59%, and the contents of ammonium and nitrate were 22-28% and 55-69% lower compared to those of the control, respectively. Moreover, the response of most of the indicators in the above process to multilayer GO was more significant than that to single layer GO. Overall, this study provides new insights into the comprehensive understanding of GO's impacts on the soil nitrogen cycle.
Collapse
Affiliation(s)
- Jin Fang
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yineng Weng
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Beier Li
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Huijun Liu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Zhongling Tian
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China
| | - Shaoting Du
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou, 310015, China.
| |
Collapse
|
11
|
Lausecker F, Lennon R, Randles MJ. The kidney matrisome in health, aging, and disease. Kidney Int 2022; 102:1000-1012. [PMID: 35870643 DOI: 10.1016/j.kint.2022.06.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 06/15/2022] [Accepted: 06/24/2022] [Indexed: 02/06/2023]
Abstract
Dysregulated extracellular matrix is the hallmark of fibrosis, and it has a profound impact on kidney function in disease. Furthermore, perturbation of matrix homeostasis is a feature of aging and is associated with declining kidney function. Understanding these dynamic processes, in the hope of developing therapies to combat matrix dysregulation, requires the integration of data acquired by both well-established and novel technologies. Owing to its complexity, the extracellular proteome, or matrisome, still holds many secrets and has great potential for the identification of clinical biomarkers and drug targets. The molecular resolution of matrix composition during aging and disease has been illuminated by cutting-edge mass spectrometry-based proteomics in recent years, but there remain key questions about the mechanisms that drive altered matrix composition. Basement membrane components are particularly important in the context of kidney function; and data from proteomic studies suggest that switches between basement membrane and interstitial matrix proteins are likely to contribute to organ dysfunction during aging and disease. Understanding the impact of such changes on physical properties of the matrix, and the subsequent cellular response to altered stiffness and viscoelasticity, is of critical importance. Likewise, the comparison of proteomic data sets from multiple organs is required to identify common matrix biomarkers and shared pathways for therapeutic intervention. Coupled with single-cell transcriptomics, there is the potential to identify the cellular origin of matrix changes, which could enable cell-targeted therapy. This review provides a contemporary perspective of the complex kidney matrisome and draws comparison to altered matrix in heart and liver disease.
Collapse
Affiliation(s)
- Franziska Lausecker
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Rachel Lennon
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; Department of Paediatric Nephrology, Royal Manchester Children's Hospital, Manchester University Hospitals National Health Service (NHS) Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Michael J Randles
- Chester Medical School, Faculty of Medicine and Life Sciences, University of Chester, Chester, UK.
| |
Collapse
|
12
|
Kidney Injuries and Evolution of Chronic Kidney Diseases Due to Neonatal Hyperoxia Exposure Based on Animal Studies. Int J Mol Sci 2022; 23:ijms23158492. [PMID: 35955627 PMCID: PMC9369080 DOI: 10.3390/ijms23158492] [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: 06/15/2022] [Revised: 07/22/2022] [Accepted: 07/26/2022] [Indexed: 02/04/2023] Open
Abstract
Preterm birth interrupts the development and maturation of the kidneys during the critical growth period. The kidneys can also exhibit structural defects and functional impairment due to hyperoxia, as demonstrated by various animal studies. Furthermore, hyperoxia during nephrogenesis impairs renal tubular development and induces glomerular and tubular injuries, which manifest as renal corpuscle enlargement, renal tubular necrosis, interstitial inflammation, and kidney fibrosis. Preterm birth along with hyperoxia exposure induces a pathological predisposition to chronic kidney disease. Hyperoxia-induced kidney injuries are influenced by several molecular factors, including hypoxia-inducible factor-1α and interleukin-6/Smad2/transforming growth factor-β, and Wnt/β-catenin signaling pathways; these are key to cell proliferation, tissue inflammation, and cell membrane repair. Hyperoxia-induced oxidative stress is characterized by the attenuation or the induction of multiple molecular factors associated with kidney damage. This review focuses on the molecular pathways involved in the pathogenesis of hyperoxia-induced kidney injuries to establish a framework for potential interventions.
Collapse
|
13
|
Tampe D, Hakroush S, Tampe B. Dissecting signalling pathways associated with intrarenal synthesis of complement components in lupus nephritis. RMD Open 2022; 8:rmdopen-2022-002517. [PMID: 35906025 PMCID: PMC9345095 DOI: 10.1136/rmdopen-2022-002517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 07/20/2022] [Indexed: 11/30/2022] Open
Abstract
Lupus nephritis is one of the most common and serious complications of systemic lupus erythematosus, attributed to increased morbidity and mortality. The in situ deposition of intrarenal immune complexes promote the accumulation of inflammatory cells and cause kidney injury in lupus nephritis. Among potential sources of intrarenal complement deposits, the concept of intrarenal complement synthesis has been described more than three decades ago in experimental lupus nephritis. By using transcriptome datasets, we here identified accelerated intrarenal synthesis of distinct classical and alternative complement pathway components, most associated with impaired kidney function. Contrasting to this, no such induction of intrarenal complement synthesis was observed in disease controls, further supporting relevance of intrarenal complement synthesis especially in human lupus nephritis. Gene set enrichment identified that glomerular complement synthesis predominantly associated with interferon signalling and signalling by interleukins in human lupus nephritis, whereas tubulointerstitial complement synthesis with aberrant T-cell receptor signalling. Because the pathomechanistic involvement of complement system activation contributed to recent advances in targeted therapy in lupus nephritis, this study provides additional insights into signalling pathways associated with intrarenal synthesis of complement components in lupus nephritis that might be also affected by targeted therapy of the complement system.
Collapse
Affiliation(s)
- Desiree Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| | - Samy Hakroush
- Institute of Pathology, University Medical Center Göttingen, Göttingen, Germany
| | - Björn Tampe
- Department of Nephrology and Rheumatology, University Medical Center Göttingen, Göttingen, Germany
| |
Collapse
|
14
|
Chen X, Wang Y, Yu X, Wang S, Zhao M. Potential Involvement of Complement Activation in Kidney Vascular Lesions of Arterionephrosclerosis. Front Med (Lausanne) 2022; 9:836155. [PMID: 35433725 PMCID: PMC9008485 DOI: 10.3389/fmed.2022.836155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/08/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundComplement dysregulation has been implicated in the pathogenesis of malignant nephrosclerosis with typical pathological manifestation as thrombotic microangiopathy (TMA) in recent studies. The aim of the present study was to evaluate the potential role of complement activation in arterionephrosclerosis, the major pathological change in benign hypertensive nephrosclerosis.MethodsPatients with biopsy-proven arterionephrosclerosis from 2010 to 2018 in our center were retrospectively enrolled in the present study. The clinical data were retrieved from the medical chart record. The pathological changes of renal biopsy were semiquantitatively evaluated. The ratio of inner-/outer-luminal diameter of the arterioles was calculated to evaluate the degree of arteriosclerosis. Immunohistochemical staining of CD34 and CD68 was adopted to evaluate peritubular capillary (PTC) density and macrophage infiltration, respectively. Complement components, including C3d, C4d, C1q, and C5b-9, were detected by immunohistochemical staining in paraffin-embedded sections. IgM and albumin were detected by immunofluorescence staining in frozen renal tissues.ResultsFifty-two patients were enrolled. The mean age was 45.0 ± 12.7 years, with 39 (75%) males. The median duration of hypertension was 66 months (IQR: 24–138 months). A total of 950 arterioles were evaluated, with a mean ratio of the inner/outer luminal diameter of 0.43 ± 0.05. The ratio of the inner-/outer-luminal diameter correlated with eGFR (r = 0.341, p = 0.013), sclerotic/ischemic glomerular lesions (r = –0.364, p = 0.008) and PTC density (r = 0.426, p = 0.002). Seventy-four percent (703/950) of the evaluated arterioles had C3d deposition with various patterns and intensities. The percentage of C3d-positive arterioles ranged from 63.6 to 100.0% in each specimen. The ratio of the inner/outer luminal diameter of arterioles correlated with the intensity of C3d deposition (r = –0.174, p = 0.001). Infiltration of macrophages was observed around C3d-positive arterioles. The percentage of C3d-positive arterioles was correlated with macrophage infiltration in each specimen (r = 0.330, p = 0.018). Occasional C4d-positive staining on arterioles was observed with no deposition of C1q or C5b-9 in arterionephrosclerosis specimens.ConclusionOur findings provide evidence for potential complement activation in the pathogenesis of vascular lesions in arterionephrosclerosis.
Collapse
Affiliation(s)
- Xuejing Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, National Health and Family Planning Commission of the People’s Republic of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Yu Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, National Health and Family Planning Commission of the People’s Republic of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
- *Correspondence: Yu Wang,
| | - Xiaojuan Yu
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, National Health and Family Planning Commission of the People’s Republic of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
| | - Suxia Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, National Health and Family Planning Commission of the People’s Republic of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
- Laboratory of Electron Microscopy, Pathological Centre, Peking University First Hospital, Beijing, China
| | - Minghui Zhao
- Renal Division, Department of Medicine, Peking University First Hospital, Institute of Nephrology, Peking University, Key Laboratory of Renal Disease, National Health and Family Planning Commission of the People’s Republic of China, Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Beijing, China
| |
Collapse
|
15
|
Urate-lowering therapy for CKD patients with asymptomatic hyperuricemia without proteinuria elucidated by attribute-based research in the FEATHER Study. Sci Rep 2022; 12:3784. [PMID: 35260678 PMCID: PMC8904814 DOI: 10.1038/s41598-022-07737-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/21/2022] [Indexed: 11/08/2022] Open
Abstract
Attribute-based medicine is essential for patient-centered medicine. To date, the groups of patients with chronic kidney disease (CKD) requiring urate-lowering therapy are clinically unknown. Herein, we evaluated the efficacy of febuxostat using a cross-classification, attribute-based research approach. We performed post hoc analysis of multicenter, randomized, double-blind, placebo-controlled trial data for 395 patients with stage 3 CKD and asymptomatic hyperuricemia. Participants were divided into febuxostat or placebo groups and subcohorts stratified and cross-classified by proteinuria and serum creatinine concentrations. In patients stratified based on proteinuria, the mean eGFR slopes were significantly higher in the febuxostat group than in the placebo group (P = 0.007) in the subcohort without proteinuria. The interaction between febuxostat treatment and presence of proteinuria in terms of eGFR slope was significant (P for interaction = 0.019). When cross-classified by the presence of proteinuria and serum creatinine level, the mean eGFR slopes significantly differed between the febuxostat and placebo groups (P = 0.040) in cross-classified subcohorts without proteinuria and with serum creatinine level ≥ median, but not in the cross-classified subcohorts with proteinuria and serum creatinine level < median. Febuxostat mitigated the decline in kidney function among stage 3 CKD patients with asymptomatic hyperuricemia without proteinuria.
Collapse
|
16
|
Singh R, Nasci VL, Guthrie G, Ertuglu LA, Butt MK, Kirabo A, Gohar EY. Emerging Roles for G Protein-Coupled Estrogen Receptor 1 in Cardio-Renal Health: Implications for Aging. Biomolecules 2022; 12:biom12030412. [PMID: 35327604 PMCID: PMC8946600 DOI: 10.3390/biom12030412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 02/25/2022] [Accepted: 03/01/2022] [Indexed: 02/05/2023] Open
Abstract
Cardiovascular (CV) and renal diseases are increasingly prevalent in the United States and globally. CV-related mortality is the leading cause of death in the United States, while renal-related mortality is the 8th. Despite advanced therapeutics, both diseases persist, warranting continued exploration of disease mechanisms to develop novel therapeutics and advance clinical outcomes for cardio-renal health. CV and renal diseases increase with age, and there are sex differences evident in both the prevalence and progression of CV and renal disease. These age and sex differences seen in cardio-renal health implicate sex hormones as potentially important regulators to be studied. One such regulator is G protein-coupled estrogen receptor 1 (GPER1). GPER1 has been implicated in estrogen signaling and is expressed in a variety of tissues including the heart, vasculature, and kidney. GPER1 has been shown to be protective against CV and renal diseases in different experimental animal models. GPER1 actions involve multiple signaling pathways: interaction with aldosterone and endothelin-1 signaling, stimulation of the release of nitric oxide, and reduction in oxidative stress, inflammation, and immune infiltration. This review will discuss the current literature regarding GPER1 and cardio-renal health, particularly in the context of aging. Improving our understanding of GPER1-evoked mechanisms may reveal novel therapeutics aimed at improving cardio-renal health and clinical outcomes in the elderly.
Collapse
Affiliation(s)
- Ravneet Singh
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Medical Research Building IV, Nashville, TN 37232, USA; (R.S.); (V.L.N.)
| | - Victoria L. Nasci
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Medical Research Building IV, Nashville, TN 37232, USA; (R.S.); (V.L.N.)
| | - Ginger Guthrie
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35233, USA; (G.G.); (M.K.B.)
| | - Lale A. Ertuglu
- Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; (L.A.E.); (A.K.)
| | - Maryam K. Butt
- Division of Nephrology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35233, USA; (G.G.); (M.K.B.)
| | - Annet Kirabo
- Division of Clinical Pharmacology, Vanderbilt University Medical Center, Nashville, TN 37232, USA; (L.A.E.); (A.K.)
| | - Eman Y. Gohar
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Medical Research Building IV, Nashville, TN 37232, USA; (R.S.); (V.L.N.)
- Correspondence:
| |
Collapse
|
17
|
Stress Reactivity, Susceptibility to Hypertension, and Differential Expression of Genes in Hypertensive Compared to Normotensive Patients. Int J Mol Sci 2022; 23:ijms23052835. [PMID: 35269977 PMCID: PMC8911431 DOI: 10.3390/ijms23052835] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 02/14/2022] [Accepted: 02/28/2022] [Indexed: 12/14/2022] Open
Abstract
Although half of hypertensive patients have hypertensive parents, known hypertension-related human loci identified by genome-wide analysis explain only 3% of hypertension heredity. Therefore, mainstream transcriptome profiling of hypertensive subjects addresses differentially expressed genes (DEGs) specific to gender, age, and comorbidities in accordance with predictive preventive personalized participatory medicine treating patients according to their symptoms, individual lifestyle, and genetic background. Within this mainstream paradigm, here, we determined whether, among the known hypertension-related DEGs that we could find, there is any genome-wide hypertension theranostic molecular marker applicable to everyone, everywhere, anytime. Therefore, we sequenced the hippocampal transcriptome of tame and aggressive rats, corresponding to low and high stress reactivity, an increase of which raises hypertensive risk; we identified stress-reactivity-related rat DEGs and compared them with their known homologous hypertension-related animal DEGs. This yielded significant correlations between stress reactivity-related and hypertension-related fold changes (log2 values) of these DEG homologs. We found principal components, PC1 and PC2, corresponding to a half-difference and half-sum of these log2 values. Using the DEGs of hypertensive versus normotensive patients (as the control), we verified the correlations and principal components. This analysis highlighted downregulation of β-protocadherins and hemoglobin as whole-genome hypertension theranostic molecular markers associated with a wide vascular inner diameter and low blood viscosity, respectively.
Collapse
|
18
|
He CY, Wang WM, Wan WD, Liang J, Hu JJ, Yuan YX, Jiang CH, Li N. Tyrosine Sulphation of CXCR4 Induces the Migration of Fibroblast in OSF. Oral Dis 2022; 29:1782-1790. [PMID: 35150031 DOI: 10.1111/odi.14150] [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: 11/03/2021] [Revised: 01/12/2022] [Accepted: 02/07/2022] [Indexed: 11/30/2022]
Abstract
Oral submucous fibrosis (OSF) caused by areca nut chewing is a prevalent fibrotic disease in Asia-Pacific countries. Arecoline-induced migration of fibroblasts (FBs) plays a vital role in the development of OSF. However, the specific molecular mechanisms involved remain unclear. Many studies have shown that tyrosine sulphation of chemokines can influence cell migration. Herein, we demonstrated that arecoline stimulates tyrosine sulphation of the chemokine receptor 4 (CXCR4) through the tyrosylprotein sulphotransferase-1 (TPST-1) to enhance the migration ability of FBs. Moreover, by RNA-Seq analysis, we found that the most significantly altered pathway was the EGFR pathway after the arecoline stimulation for FBs. After the knockdown of arecoline-induced EGFR expression, the tyrosine sulphation of CXCR4 was significantly decreased by the inhibition of TPST-1 induction. Finally, in human OSF specimens, TPST-1 expression was directly correlated with the expression of CXCR4. These data indicate that the arecoline-induced tyrosine sulphation of CXCR4, which is regulated by TPST-1, might be a potential mechanism that contributes to FB migration in OSF.
Collapse
Affiliation(s)
- C Y He
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - W M Wang
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Oral Precancerous Lesions, Central South University, Changsha, China.,Research Center of Oral and Maxillofacial Tumor, Xiangya Hospital, Central South University, Changsha, China
| | - W D Wan
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - J Liang
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - J J Hu
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China
| | - Y X Yuan
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Oral Precancerous Lesions, Central South University, Changsha, China.,Research Center of Oral and Maxillofacial Tumor, Xiangya Hospital, Central South University, Changsha, China
| | - C H Jiang
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Oral Precancerous Lesions, Central South University, Changsha, China.,Research Center of Oral and Maxillofacial Tumor, Xiangya Hospital, Central South University, Changsha, China
| | - N Li
- Department of Oral and Maxillofacial Surgery, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, China.,Institute of Oral Precancerous Lesions, Central South University, Changsha, China.,Research Center of Oral and Maxillofacial Tumor, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| |
Collapse
|
19
|
Fayçal CA, Oszwald A, Feilen T, Cosenza-Contreras M, Schilling O, Loustau T, Steinbach F, Schachner H, Langer B, Heeringa P, Rees AJ, Orend G, Kain R. An adapted passive model of anti-MPO dependent crescentic glomerulonephritis reveals matrix dysregulation and is amenable to modulation by CXCR4 inhibition. Matrix Biol 2022; 106:12-33. [PMID: 35032611 DOI: 10.1016/j.matbio.2022.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 12/18/2021] [Accepted: 01/05/2022] [Indexed: 12/25/2022]
Abstract
Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV) are severe inflammatory disorders that often involve focal necrotizing glomerulonephritis (FNGN) and consequent glomerular scarring, interstitial fibrosis, and chronic kidney disease. Robust murine models of scarring in FNGN that may help to further our understanding of deleterious processes are still lacking. Here, we present a murine model of severe FNGN based on combined administration of antibodies against the glomerular basement membrane (GBM) and myeloperoxidase (MPO), and bacterial lipopolysaccharides (LPS), that recapitulates acute injury and was adapted to investigate subsequent glomerular and interstitial scarring. Hematuria without involvement of other organs occurs consistently and rapidly, glomerular necrosis and crescent formation are evident at 12 days, and consequent glomerular and interstitial scarring at 29 days after initial treatment. Using mass-spectrometric proteome analysis, we provide a detailed overview of matrisomal and cellular changes in our model. We observed increased expression of the matrisome including collagens, fibronectin, tenascin-C, in accordance with human AAV as deduced from analysis of gene expression microarrays and tissue staining. Moreover, we observed tissue infiltration by neutrophils, macrophages, T cells and myofibroblasts upon injury. Experimental inhibition of CXCR4 using AMD3100 led to a sustained histological presence of fibrin extravasate, reduced chemokine expression and leukocyte activation, but did not markedly affect ECM composition. Altogether, we demonstrate an adapted FNGN model that enables the study of matrisomal changes both in disease and upon intervention, as exemplified via CXCR4 inhibition.
Collapse
Affiliation(s)
- Chérine Abou Fayçal
- INSERM U1109, The Tumor Microenvironment Laboratory, Strasbourg, France; Université Strasbourg, Hopital Civil, Institut d'Hématologie et d'Immunologie, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France; These authors (CAF and AO) contributed equally to this work
| | - Andre Oszwald
- Department of Pathology, Medical University of Vienna, Vienna, Austria; These authors (CAF and AO) contributed equally to this work
| | - Tobias Feilen
- Institute of Surgical Pathology, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104 Freiburg, Germany
| | - Miguel Cosenza-Contreras
- Institute of Surgical Pathology, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; Faculty of Biology, University of Freiburg, Schänzlestraße 1, 79104 Freiburg, Germany
| | - Oliver Schilling
- Institute of Surgical Pathology, University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany; German Cancer Consortium (DKTK) and Cancer Research Center (DKFZ), Hugstetter Straße 55, 79106 Freiburg, Germany
| | - Thomas Loustau
- INSERM U1109, The Tumor Microenvironment Laboratory, Strasbourg, France; Université Strasbourg, Hopital Civil, Institut d'Hématologie et d'Immunologie, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Fanny Steinbach
- INSERM U1109, The Tumor Microenvironment Laboratory, Strasbourg, France; Université Strasbourg, Hopital Civil, Institut d'Hématologie et d'Immunologie, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Helga Schachner
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Brigitte Langer
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Peter Heeringa
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Andrew J Rees
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Gertraud Orend
- INSERM U1109, The Tumor Microenvironment Laboratory, Strasbourg, France; Université Strasbourg, Hopital Civil, Institut d'Hématologie et d'Immunologie, Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.
| | - Renate Kain
- Department of Pathology, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
20
|
Lu CF, Ma JH, Su JB, Wang XQ, Liu WS, Ge XQ. Serum stromal cell-derived factor-1 levels are associated with diabetic kidney disease in type 2 diabetic patients. Endocr J 2021; 68:1101-1107. [PMID: 33896872 DOI: 10.1507/endocrj.ej21-0039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The present study was designed to explore whether serum stromal cell-derived factor-1 (SDF-1) levels were associated with diabetic kidney disease (DKD). Serum SDF-1 levels were measured by sandwich ELISA. Patients with an estimated glomerular filtration rate (eGFR) <60 mL/min/1.73 m2 or a urinary albumin-to-creatinine ratio (UACR) ≥30 mg/g for 3 months were identified as having DKD. Among the recruited type 2 diabetic patients, 18.71% (n = 32) were found to have DKD, and the serum SDF-1 levels of these patients were higher than those of patients without DKD (p < 0.05). Serum SDF-1 levels were positively correlated with cystatin C levels, the UACR and DKD incidence (r = 0.330, 0.183 and 0.186, respectively, p < 0.05) and inversely related to eGFR (r = -0.368, p < 0.001). After adjusting for other clinical covariates by multivariate logistic regression analyses, serum SDF-1 levels were found to be an independent contributor to DKD, and the odds ratio (95% confidence interval) was 1.438 (1.041-1.986). Furthermore, receiver operating characteristic analysis revealed that the optimal SDF-1 cutoff value for indicating DKD was 5.609 ng/mL (its corresponding sensitivity was 82.00%, and specificity was 46.90%). Our results demonstrated that serum SDF-1 levels were closely associated with DKD and could be considered a potent indicator for DKD in patients with T2D.
Collapse
Affiliation(s)
- Chun-Feng Lu
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, No. 32 Gong-qing-tuan Road, Nanjing 210012, China
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, No. 6 North Hai-er-xiang Road, Nantong 226001, China
| | - Jian-Hua Ma
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, No. 32 Gong-qing-tuan Road, Nanjing 210012, China
| | - Jian-Bin Su
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, No. 6 North Hai-er-xiang Road, Nantong 226001, China
| | - Xue-Qin Wang
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, No. 6 North Hai-er-xiang Road, Nantong 226001, China
| | - Wang-Shu Liu
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, No. 6 North Hai-er-xiang Road, Nantong 226001, China
| | - Xiao-Qin Ge
- Department of Endocrinology, Affiliated Hospital 2 of Nantong University and First People's Hospital of Nantong City, No. 6 North Hai-er-xiang Road, Nantong 226001, China
| |
Collapse
|
21
|
Randles MJ, Lausecker F, Kong Q, Suleiman H, Reid G, Kolatsi-Joannou M, Davenport B, Tian P, Falcone S, Potter P, Van Agtmael T, Norman JT, Long DA, Humphries MJ, Miner JH, Lennon R. Identification of an Altered Matrix Signature in Kidney Aging and Disease. J Am Soc Nephrol 2021; 32:1713-1732. [PMID: 34049963 PMCID: PMC8425653 DOI: 10.1681/asn.2020101442] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/15/2021] [Accepted: 03/22/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Accumulation of extracellular matrix in organs and tissues is a feature of both aging and disease. In the kidney, glomerulosclerosis and tubulointerstitial fibrosis accompany the decline in function, which current therapies cannot address, leading to organ failure. Although histologic and ultrastructural patterns of excess matrix form the basis of human disease classifications, a comprehensive molecular resolution of abnormal matrix is lacking. METHODS Using mass spectrometry-based proteomics, we resolved matrix composition over age in mouse models of kidney disease. We compared the changes in mice with a global characterization of human kidneymatrix during aging and to existing kidney disease datasets to identify common molecular features. RESULTS Ultrastructural changes in basement membranes are associated with altered cell adhesion and metabolic processes and with distinct matrix proteomes during aging and kidney disease progression in mice. Within the altered matrix, basement membrane components (laminins, type IV collagen, type XVIII collagen) were reduced and interstitial matrix proteins (collagens I, III, VI, and XV; fibrinogens; and nephronectin) were increased, a pattern also seen in human kidney aging. Indeed, this signature of matrix proteins was consistently modulated across all age and disease comparisons, and the increase in interstitial matrix was also observed in human kidney disease datasets. CONCLUSIONS This study provides deep molecular resolution of matrix accumulation in kidney aging and disease, and identifies a common signature of proteins that provides insight into mechanisms of response to kidney injury and repair.
Collapse
Affiliation(s)
- Michael J. Randles
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Franziska Lausecker
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Qingyang Kong
- Department of Renal Medicine, University College London, London, United Kingdom
| | - Hani Suleiman
- Renal Division, Washington University School of Medicine, Saint Louis, Missouri
| | - Graeme Reid
- Department of Histopathology, Manchester Royal Infirmary, Manchester University Hospitals National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Maria Kolatsi-Joannou
- Developmental Biology and Cancer Programme, Great Ormond Institute of Child Health, University College London, London, United Kingdom
| | - Bernard Davenport
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Pinyuan Tian
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Sara Falcone
- Centre for Cellular and Molecular Physiology, University of Oxford, Oxford, United Kingdom
| | - Paul Potter
- Department Biological and Medical Sciences, Faculty of Health and Life Sciences, Oxford Brookes University, Oxford, United Kingdom
| | - Tom Van Agtmael
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Jill T. Norman
- Department of Renal Medicine, University College London, London, United Kingdom
| | - David A. Long
- Developmental Biology and Cancer Programme, Great Ormond Institute of Child Health, University College London, London, United Kingdom
| | - Martin J. Humphries
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Jeffrey H. Miner
- Renal Division, Washington University School of Medicine, Saint Louis, Missouri
| | - Rachel Lennon
- Wellcome Centre for Cell-Matrix Research, Division of Cell-Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology Medicine and Health, The University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
- Department of Paediatric Nephrology, Royal Manchester Children’s Hospital, Manchester University Hospitals National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| |
Collapse
|
22
|
Yao X, Shen H, Cao F, He H, Li B, Zhang H, Zhang X, Li Z. Bioinformatics Analysis Reveals Crosstalk Among Platelets, Immune Cells, and the Glomerulus That May Play an Important Role in the Development of Diabetic Nephropathy. Front Med (Lausanne) 2021; 8:657918. [PMID: 34249963 PMCID: PMC8264258 DOI: 10.3389/fmed.2021.657918] [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: 01/24/2021] [Accepted: 04/28/2021] [Indexed: 01/15/2023] Open
Abstract
Diabetic nephropathy (DN) is the main cause of end stage renal disease (ESRD). Glomerulus damage is one of the primary pathological changes in DN. To reveal the gene expression alteration in the glomerulus involved in DN development, we screened the Gene Expression Omnibus (GEO) database up to December 2020. Eleven gene expression datasets about gene expression of the human DN glomerulus and its control were downloaded for further bioinformatics analysis. By using R language, all expression data were extracted and were further cross-platform normalized by Shambhala. Differentially expressed genes (DEGs) were identified by Student's t-test coupled with false discovery rate (FDR) (P < 0.05) and fold change (FC) ≥1.5. DEGs were further analyzed by the Database for Annotation, Visualization, and Integrated Discovery (DAVID) to enrich the Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway. We further constructed a protein-protein interaction (PPI) network of DEGs to identify the core genes. We used digital cytometry software CIBERSORTx to analyze the infiltration of immune cells in DN. A total of 578 genes were identified as DEGs in this study. Thirteen were identified as core genes, in which LYZ, LUM, and THBS2 were seldom linked with DN. Based on the result of GO, KEGG enrichment, and CIBERSORTx immune cells infiltration analysis, we hypothesize that positive feedback may form among the glomerulus, platelets, and immune cells. This vicious cycle may damage the glomerulus persistently even after the initial high glucose damage was removed. Studying the genes and pathway reported in this study may shed light on new knowledge of DN pathogenesis.
Collapse
Affiliation(s)
- Xinyue Yao
- The Hebei Key Lab for Organ Fibrosis, The Hebei Key Lab for Chronic Disease, School of Public Health, International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, China
| | - Hong Shen
- Department of Modern Technology and Education Center, North China University of Science and Technology, Tangshan, China
| | - Fukai Cao
- Department of Jitang College, North China University of Science and Technology, Tangshan, China
| | - Hailan He
- The Hebei Key Lab for Organ Fibrosis, The Hebei Key Lab for Chronic Disease, School of Public Health, International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, China
| | - Boyu Li
- The Hebei Key Lab for Organ Fibrosis, The Hebei Key Lab for Chronic Disease, School of Public Health, International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, China
| | - Haojun Zhang
- Beijing Key Lab for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, China
| | - Xinduo Zhang
- The Hebei Key Lab for Organ Fibrosis, The Hebei Key Lab for Chronic Disease, School of Public Health, International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, China
| | - Zhiguo Li
- The Hebei Key Lab for Organ Fibrosis, The Hebei Key Lab for Chronic Disease, School of Public Health, International Science and Technology Cooperation Base of Geriatric Medicine, North China University of Science and Technology, Tangshan, China
| |
Collapse
|
23
|
Zhou LT, Zhang ZJ, Cao JY, Chen H, Zhu YS, Wu X, Nawabi AQ, Liu X, Shan W, Zhang Y, Zhang XR, Xue J, Hu L, Wang SS, Wang L, Sun ZX. The unique molecular mechanism of diabetic nephropathy: a bioinformatics analysis of over 250 microarray datasets. Clin Kidney J 2021; 14:1626-1638. [PMID: 34084458 PMCID: PMC8162860 DOI: 10.1093/ckj/sfaa190] [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: 05/17/2020] [Accepted: 07/20/2020] [Indexed: 11/18/2022] Open
Abstract
Background/Aims Diabetic nephropathy (DN) is one of the main causes of end-stage kidney disease worldwide. Emerging studies have suggested that its pathogenesis is distinct from nondiabetic renal diseases in many aspects. However, it still lacks a comprehensive understanding of the unique molecular mechanism of DN. Methods A total of 255 Affymetrix U133 microarray datasets (Affymetrix, Santa Calra, CA, USA) of human glomerular and tubulointerstitial tissues were collected. The 22 215 Affymetrix identifiers shared by the Human Genome U133 Plus 2.0 and U133A Array were extracted to facilitate dataset pooling. Next, a linear model was constructed and the empirical Bayes method was used to select the differentially expressed genes (DEGs) of each kidney disease. Based on these DEG sets, the unique DEGs of DN were identified and further analyzed using gene ontology and pathway enrichment analysis. Finally, the protein–protein interaction networks (PINs) were constructed and hub genes were selected to further refine the results. Results A total of 129 and 1251 unique DEGs were identified in the diabetic glomerulus (upregulated n = 83 and downregulated n = 203) and the diabetic tubulointerstitium (upregulated n = 399 and downregulated n = 874), respectively. Enrichment analysis revealed that the DEGs in the diabetic glomerulus were significantly associated with the extracellular matrix, cell growth, regulation of blood coagulation, cholesterol homeostasis, intrinsic apoptotic signaling pathway and renal filtration cell differentiation. In the diabetic tubulointerstitium, the significantly enriched biological processes and pathways included metabolism, the advanced glycation end products–receptor for advanced glycation end products signaling pathway in diabetic complications, the epidermal growth factor receptor (EGFR) signaling pathway, the FoxO signaling pathway, autophagy and ferroptosis. By constructing PINs, several nodes, such as AGR2, CSNK2A1, EGFR and HSPD1, were identified as hub genes, which might play key roles in regulating the development of DN. Conclusions Our study not only reveals the unique molecular mechanism of DN but also provides a valuable resource for biomarker and therapeutic target discovery. Some of our findings are promising and should be explored in future work.
Collapse
Affiliation(s)
- Le-Ting Zhou
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Zhi-Jian Zhang
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Jing-Yuan Cao
- Nephrology Department, Taizhou People's Hospital, Fifth Affiliated Hospital to Nantong University, Taizhou, Jiangsu, China
| | - Hanzhi Chen
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Yu-Shan Zhu
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Xi Wu
- Department of Bioinformatics, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Abdul Qadir Nawabi
- School of Medicine, Southeast University Zhongda Hospital, Nanjing, Jiangsu, China
| | - Xiaobin Liu
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Weiwei Shan
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Yue Zhang
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Xi-Ran Zhang
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Jing Xue
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Ling Hu
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Si-Si Wang
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Liang Wang
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| | - Zhu-Xing Sun
- Department of Nephrology, Nanjing Medical University Affiliated Wuxi People's Hospital, Wuxi, Jiangsu, China
| |
Collapse
|
24
|
Dorotea D, Lee S, Lee SJ, Lee G, Son JB, Choi HG, Ahn SM, Ha H. KF-1607, a Novel Pan Src Kinase Inhibitor, Attenuates Obstruction-Induced Tubulointerstitial Fibrosis in Mice. Biomol Ther (Seoul) 2021; 29:41-51. [PMID: 32690822 PMCID: PMC7771845 DOI: 10.4062/biomolther.2020.088] [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: 05/18/2020] [Revised: 06/02/2020] [Accepted: 06/04/2020] [Indexed: 02/06/2023] Open
Abstract
Src family kinases (SFKs), an important group of non-receptor tyrosine kinases, are suggested to be excessively activated during various types of tissue fibrosis. The present study investigated the effect of KF-1607, an orally active and a newly synthesized Src kinase inhibitor (SKI) with proposed low toxicity, in preventing the progression of renal interstitial fibrosis. Unilateral ureteral obstruction (UUO) surgery was performed in 6-week-old male C57BL/6 mice to induce renal interstitial fibrosis. Either KF-1607 (30 mg/kg, oral gavage) or PP2 (2 mg/kg, intraperitoneal injection), a common experimental SKI, was administered to mice for seven days, started one day prior to surgery. UUO injury-induced SFK expression, including Src, Fyn, and Lyn kinase. SFK inhibition by KF-1607 prevented the progression of tubular injury in UUO mice, as indicated by decreases in albuminuria, urinary KIM-1 excretion, and kidney NGAL protein expression. Renal tubulointerstitial fibrosis was attenuated in response to KF-1607, as shown by decreases in α-SMA, collagen I and IV protein expression, along with reduced Masson’s trichrome and collagen-I staining in kidneys. KF-1607 also inhibited inflammation in the UUO kidney, as exhibited by reductions in F4/80 positive-staining and protein expression of p-NFκB and ICAM. Importantly, the observed effects of KF-1607 were similar to those of PP2. A new pan Src kinase inhibitor, KF-1607, is a potential pharmaceutical agent to prevent the progression of renal interstitial fibrosis.
Collapse
Affiliation(s)
- Debra Dorotea
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Seungyeon Lee
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Sun Joo Lee
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Gayoung Lee
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Jung Beom Son
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Hwan Geun Choi
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Republic of Korea
| | - Sung-Min Ahn
- Department of Genome Medicine and Science, College of Medicine, Gachon University, Seongnam 13120, Republic of Korea.,Department of Hematology-Oncology, Gachon University Gil Hospital, Incheon 21565, Republic of Korea.,ImmunoForge, Seoul 08826, Republic of Korea
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Republic of Korea
| |
Collapse
|
25
|
Faivre A, Scholz CC, de Seigneux S. Hypoxia in chronic kidney disease: towards a paradigm shift? Nephrol Dial Transplant 2020; 36:1782-1790. [PMID: 33895835 DOI: 10.1093/ndt/gfaa091] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Indexed: 11/15/2022] Open
Abstract
Chronic kidney disease (CKD) is defined as an alteration of kidney structure and/or function lasting for >3 months [1]. CKD affects 10% of the general adult population and is responsible for large healthcare costs [2]. Since the end of the last century, the role of hypoxia in CKD progression has controversially been discussed. To date, there is evidence of the presence of hypoxia in late-stage renal disease, but we lack time-course evidence, stage correlation and also spatial co-localization with fibrotic lesions to ensure its causative role. The classical view of hypoxia in CKD progression is that it is caused by peritubular capillary alterations, renal anaemia and increased oxygen consumption regardless of the primary injury. In this classical view, hypoxia is assumed to further induce pro-fibrotic and pro-inflammatory responses, as well as oxidative stress, leading to CKD worsening as part of a vicious circle. However, recent investigations tend to question this paradigm, and both the presence of hypoxia and its role in CKD progression are still not clearly demonstrated. Hypoxia-inducible factor (HIF) is the main transcriptional regulator of the hypoxia response. Genetic HIF modulation leads to variable effects on CKD progression in different murine models. In contrast, pharmacological modulation of the HIF pathway [i.e. by HIF hydroxylase inhibitors (HIs)] appears to be generally protective against fibrosis progression experimentally. We here review the existing literature on the role of hypoxia, the HIF pathway and HIF HIs in CKD progression and summarize the evidence that supports or rejects the hypoxia hypothesis, respectively.
Collapse
Affiliation(s)
- Anna Faivre
- Department of Cell physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Carsten C Scholz
- Institute of Physiology, University of Zurich, Zurich, Switzerland.,National Centre of Competence in Research "Kidney.CH", Zurich, Switzerland
| | - Sophie de Seigneux
- Department of Cell physiology and Metabolism, University of Geneva, Geneva, Switzerland.,National Centre of Competence in Research "Kidney.CH", Zurich, Switzerland.,Department of Medicine, Service of Nephrology, Geneva University Hospitals, Geneva, Switzerland
| |
Collapse
|
26
|
Tajti F, Kuppe C, Antoranz A, Ibrahim MM, Kim H, Ceccarelli F, Holland CH, Olauson H, Floege J, Alexopoulos LG, Kramann R, Saez-Rodriguez J. A Functional Landscape of CKD Entities From Public Transcriptomic Data. Kidney Int Rep 2019; 5:211-224. [PMID: 32043035 PMCID: PMC7000845 DOI: 10.1016/j.ekir.2019.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 10/09/2019] [Accepted: 11/04/2019] [Indexed: 12/18/2022] Open
Abstract
Introduction To develop effective therapies and identify novel early biomarkers for chronic kidney disease, an understanding of the molecular mechanisms orchestrating it is essential. We here set out to understand how differences in chronic kidney disease (CKD) origin are reflected in gene expression. To this end, we integrated publicly available human glomerular microarray gene expression data for 9 kidney disease entities that account for most of CKD worldwide. Our primary goal was to demonstrate the possibilities and potential on data analysis and integration to the nephrology community. Methods We integrated data from 5 publicly available studies and compared glomerular gene expression profiles of disease with that of controls from nontumor parts of kidney cancer nephrectomy tissues. A major challenge was the integration of the data from different sources, platforms, and conditions that we mitigated with a bespoke stringent procedure. Results We performed a global transcriptome-based delineation of different kidney disease entities, obtaining a transcriptomic diffusion map of their similarities and differences based on the genes that acquire a consistent differential expression between each kidney disease entity and nephrectomy tissue. We derived functional insights by inferring the activity of signaling pathways and transcription factors from the collected gene expression data and identified potential drug candidates based on expression signature matching. We validated representative findings by immunostaining in human kidney biopsies indicating, for example, that the transcription factor FOXM1 is significantly and specifically expressed in parietal epithelial cells in rapidly progressive glomerulonephritis (RPGN) whereas not expressed in control kidney tissue. Furthermore, we found drug candidates by matching the signature on expression of drugs to that of the CKD entities, in particular, the Food and Drug Administration-approved drug nilotinib. Conclusion These results provide a foundation to comprehend the specific molecular mechanisms underlying different kidney disease entities that can pave the way to identify biomarkers and potential therapeutic targets. To facilitate further use, we provide our results as a free interactive Web application: https://saezlab.shinyapps.io/ckd_landscape/. However, because of the limitations of the data and the difficulties in its integration, any specific result should be considered with caution. Indeed, we consider this study rather an illustration of the value of functional genomics and integration of existing data.
Collapse
Affiliation(s)
- Ferenc Tajti
- Faculty of Medicine, RWTH Aachen University, Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Aachen, Germany.,Division of Nephrology and Clinical Immunology, RWTH Aachen University, Aachen, Germany
| | - Christoph Kuppe
- Division of Nephrology and Clinical Immunology, RWTH Aachen University, Aachen, Germany
| | - Asier Antoranz
- Department of Mechanical Engineering, National Technical University of Athens, Athens, Greece.,Department of Testing Services, ProtATonce Ltd., Athens, Greece
| | - Mahmoud M Ibrahim
- Faculty of Medicine, RWTH Aachen University, Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Aachen, Germany.,Division of Nephrology and Clinical Immunology, RWTH Aachen University, Aachen, Germany
| | - Hyojin Kim
- Faculty of Medicine, RWTH Aachen University, Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Aachen, Germany
| | - Francesco Ceccarelli
- Faculty of Medicine, RWTH Aachen University, Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Aachen, Germany
| | - Christian H Holland
- Faculty of Medicine, RWTH Aachen University, Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Aachen, Germany.,Institute for Computational Biomedicine, Heidelberg University, Bioquant, Heidelberg, Germany
| | - Hannes Olauson
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Jürgen Floege
- Division of Nephrology and Clinical Immunology, RWTH Aachen University, Aachen, Germany
| | - Leonidas G Alexopoulos
- Department of Mechanical Engineering, National Technical University of Athens, Athens, Greece.,Department of Testing Services, ProtATonce Ltd., Athens, Greece
| | - Rafael Kramann
- Division of Nephrology and Clinical Immunology, RWTH Aachen University, Aachen, Germany
| | - Julio Saez-Rodriguez
- Faculty of Medicine, RWTH Aachen University, Joint Research Centre for Computational Biomedicine (JRC-COMBINE), Aachen, Germany.,Institute for Computational Biomedicine, Heidelberg University, Bioquant, Heidelberg, Germany
| |
Collapse
|
27
|
Systems biology approaches to identify disease mechanisms and facilitate targeted therapy in the management of glomerular disease. Curr Opin Nephrol Hypertens 2019; 27:433-439. [PMID: 30074515 DOI: 10.1097/mnh.0000000000000446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
PURPOSE OF REVIEW Current clinical pathological classifications of glomerular diseases are inadequate at predicting patient disease progression or response to therapy. With the advent of precision medicine and its successes in oncology, it is important to understand if similar approaches in glomerular diseases can improve patient management. The purpose of this review is to summarize approaches to obtain comprehensive molecular profiles from human biopsies and utilize them to define the pathophysiology of glomerular failure. RECENT FINDINGS Multicenter research networks have provided the framework to capture both prospective clinical disease course and patterns of end organ damage in biopsy cohorts. With these sample and data sets in hand, efforts are progressing towards molecular disease characterization, identification of novel prognostic marker, development of more precise clinical trials and discovery of predictive biomarkers to more effectively stratify patients to appropriate treatment regiments. Partnerships between academia, public funding agencies and private companies seek to improve timelines and maximize resources while also leveraging domain expertise in an integrated framework to holistically understand disease. SUMMARY The application of system biology techniques within team science frameworks across disciplines and continents will seek to realize the impact of precision medicine to bring urgently needed novel therapeutic options to patients with glomerular disease.
Collapse
|
28
|
Uematsu M, Nakamura T, Yoshizaki T, Watanabe Y, Deyama J, Watanabe K, Kobayashi T, Fujioka D, Saito Y, Nakamura K, Kawabata K, Obata JE, Kugiyama K. High levels of stromal cell-derived factor-1α predict short-term progression of renal dysfunction in patients with coronary artery disease. Clin Exp Nephrol 2019; 23:920-927. [PMID: 30830550 DOI: 10.1007/s10157-019-01722-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 02/25/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Stromal cell-derived factor-1α (SDF-1α) is an inflammatory chemokine that plays a critical role in cardiovascular disease. Although persistent inflammation causes renal dysfunction, it remains unclear whether SDF-1α is related to progression of chronic kidney disease. This study examined whether high levels of SDF-1α are associated with future declines in renal function in patients with coronary artery disease (CAD). METHODS Plasma levels of SDF-1α in the peripheral blood were measured by enzyme-linked immunosorbent assay in 344 patients with CAD. All patients were followed for 24 months or until the occurrence of renal dysfunction, defined as ≥ 25% decrease in estimated glomerular filtration rate (eGFR) from baseline. RESULTS During the follow-up period, 36 patients developed renal dysfunction. Multivariate logistic regression analysis showed that high plasma levels of SDF-1α were significantly associated with progression of renal dysfunction (odds ratio 1.65; 95% confidence intervals 1.07-2.35, p = 0.03). In addition, high plasma levels of SDF-1α had a significant incremental effect on the predictive value of known risk factors for renal dysfunction in analyses using net reclassification improvement (NRI) and integrated discrimination improvement (IDI) (NRI 0.58 [0.07-1.02], p < 0.01; and IDI 0.030 [0.001-0.085], p = 0.02). CONCLUSION High plasma levels of SDF-1α were associated with the short-term decline of eGFR in patients with CAD. Thus, SDF-1α may be useful for predicting the progression of renal dysfunction in patients with CAD.
Collapse
Affiliation(s)
- Manabu Uematsu
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan.
| | - Takamitsu Nakamura
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Toru Yoshizaki
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Yosuke Watanabe
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Juntaro Deyama
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Kazuhiro Watanabe
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Tsuyoshi Kobayashi
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Daisuke Fujioka
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Yukio Saito
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Kazuto Nakamura
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Kenichi Kawabata
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Jun-Ei Obata
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| | - Kiyotaka Kugiyama
- Department of Internal Medicine II, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, 409-3898, Japan
| |
Collapse
|
29
|
Zhou LT, Lv LL, Qiu S, Yin Q, Li ZL, Tang TT, Ni LH, Feng Y, Wang B, Ma KL, Liu BC. Bioinformatics-based discovery of the urinary BBOX1 mRNA as a potential biomarker of diabetic kidney disease. J Transl Med 2019; 17:59. [PMID: 30819181 PMCID: PMC6394064 DOI: 10.1186/s12967-019-1818-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 02/21/2019] [Indexed: 01/15/2023] Open
Abstract
Background Diabetic kidney disease (DKD) is the leading cause of end-stage kidney disease (ESKD) in the world. Emerging evidence has shown that urinary mRNAs may serve as early diagnostic and prognostic biomarkers of DKD. In this article, we aimed to first establish a novel bioinformatics-based methodology for analyzing the “urinary kidney-specific mRNAs” and verify their potential clinical utility in DKD. Methods To select candidate mRNAs, a total of 127 Affymetrix microarray datasets of diabetic kidney tissues and other tissues from humans were compiled and analyzed using an integrative bioinformatics approach. Then, the urinary expression of candidate mRNAs in stage 1 study (n = 82) was verified, and the one with best performance moved on to stage 2 study (n = 80) for validation. To avoid potential detection bias, a one-step Taqman PCR assay was developed for quantification of the interested mRNA in stage 2 study. Lastly, the in situ expression of the selected mRNA was further confirmed using fluorescent in situ hybridization (FISH) assay and bioinformatics analysis. Results Our bioinformatics analysis identified sixteen mRNAs as candidates, of which urinary BBOX1 (uBBOX1) levels were significantly upregulated in the urine of patients with DKD. The expression of uBBOX1 was also increased in normoalbuminuric diabetes subjects, while remained unchanged in patients with urinary tract infection or bladder cancer. Besides, uBBOX1 levels correlated with glycemic control, albuminuria and urinary tubular injury marker levels. Similar results were obtained in stage 2 study. FISH assay further demonstrated that BBOX1 mRNA was predominantly located in renal tubular epithelial cells, while its expression in podocytes and urothelium was weak. Further bioinformatics analysis also suggested that tubular BBOX1 mRNA expression was quite stable in various types of kidney diseases. Conclusions Our study provided a novel methodology to identify and analyze urinary kidney-specific mRNAs. uBBOX1 might serve as a promising biomarker of DKD. The performance of the selected urinary mRNAs in monitoring disease progression needs further validation. Electronic supplementary material The online version of this article (10.1186/s12967-019-1818-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Le-Ting Zhou
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China.,Wuxi People's Hospital Affiliated To Nanjing Medical University, Wuxi, Jiangsu, China
| | - Lin-Li Lv
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Shen Qiu
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Qing Yin
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Zuo-Lin Li
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Tao-Tao Tang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Li-Hua Ni
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Ye Feng
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Bin Wang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Kun-Ling Ma
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China
| | - Bi-Cheng Liu
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, No. 87 Dingjiaqiao Rd, Nanjing, Jiangsu, China.
| |
Collapse
|
30
|
Izadi F. Differential Connectivity in Colorectal Cancer Gene Expression Network. IRANIAN BIOMEDICAL JOURNAL 2019; 23. [PMID: 29843204 PMCID: PMC6305824 DOI: 10.29252/.23.1.34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Colorectal cancer (CRC) is one of the challenging types of cancers; thus, exploring effective biomarkers related to colorectal could lead to significant progresses toward the treatment of this disease. METHODS In the present study, CRC gene expression datasets have been reanalyzed. Mutual differentially expressed genes across 294 normal mucosa and adjacent tumoral samples were then utilized in order to build two independent transcriptional regulatory networks. By analyzing the networks topologically, genes with differential global connectivity related to cancer state were determined for which the potential transcriptional regulators including transcription factors were identified. RESULTS The majority of differentially connected genes (DCGs) were up-regulated in colorectal transcriptome experiments. Moreover, a number of these genes have been experimentally validated as cancer or CRC-associated genes. The DCGs, including GART, TGFB1, ITGA2, SLC16A5, SOX9, and MMP7, were investigated across 12 cancer types. Functional enrichment analysis followed by detailed data mining exhibited that these candidate genes could be related to CRC by mediating in metastatic cascade in addition to shared pathways with 12 cancer types by triggering the inflammatory events. DISCUSSION Our study uncovered correlated alterations in gene expression related to CRC susceptibility and progression that the potent candidate biomarkers could provide a link to disease.
Collapse
Affiliation(s)
- Fereshteh Izadi
- Sari Agricultural Sciences and Natural Resources University (SANRU), Farah Abad Road, Mazandaran 4818168984, Iran,Corresponding Author: Fereshteh Izadi Sari Agricultural Sciences and Natural Resources University (SANRU), Farah Abad Road, Mazandaran 4818168984, Iran; Mobile: (+98-918) 6291302; E-mail:
| |
Collapse
|
31
|
Mathia S, Rudigier LJ, Kasim M, Kirschner KM, Persson PB, Eckardt KU, Rosenberger C, Fähling M. A dual role of miR-22 in rhabdomyolysis-induced acute kidney injury. Acta Physiol (Oxf) 2018; 224:e13102. [PMID: 29791781 DOI: 10.1111/apha.13102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 12/18/2022]
Abstract
AIM In acute kidney injury (AKI), regions of the kidney are hypoxic. However, for reasons yet unknown, adaptation to hypoxia through hypoxia-inducible factor (HIF) is limited. Here, we studied miR-22, a potential HIF repressor, in normal kidneys, as well as in rhabdomyolysis-induced AKI, a condition where miR-22 is up-regulated. METHODS AKI in mice was provoked by IM injection of glycerol. Tissue homogenates were processed to determine the levels of candidate RNAs and proteins, as well as global gene expression profiles. Reporter assays quantified in vitro miR-22 activity and its modulation by mimic or inhibitor molecules, under normoxia or hypoxia (1% O2 ) respectively. In vivo, anti-miR-22 molecules were applied to normal mice or prior to induction of AKI. Renal outcome was assessed by measuring plasma creatinine, plasma urea and the levels of the injury markers Kim-1 and Ngal. RESULTS Renal miR-22 is inducible by hypoxia and represses hypoxia-inducible factor (HIF). Specific inhibition of miR-22 regulates 1913 gene transcripts in kidneys controls and 3386 in AKI, many of which are involved in development or carcinogenesis. Specific inhibition of miR-22 up-regulates tissue protective HIF target genes, yet renal function and injury markers are unchanged or worsened. CONCLUSIONS miR-22 is a HIF repressor constitutively expressed in the adult kidney and up-regulated in AKI. Specific inhibition of miR-22 is efficient in vivo and profoundly affects renal gene expression in health and disease, including up-regulation of HIF. However, the net effect on rhabdomyolysis-induced AKI outcome is neutral or even negative.
Collapse
Affiliation(s)
- S. Mathia
- Department of Vegetative Physiology; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
- Department of Nephrology and Medical Intensive Care; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| | - L. J. Rudigier
- Department of Biology; Humboldt-Universität zu Berlin; Berlin Germany
| | - M. Kasim
- Department of Vegetative Physiology; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| | - K. M. Kirschner
- Department of Vegetative Physiology; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| | - P. B. Persson
- Department of Vegetative Physiology; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| | - K.-U. Eckardt
- Department of Nephrology and Medical Intensive Care; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| | - C. Rosenberger
- Department of Nephrology and Medical Intensive Care; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| | - M. Fähling
- Department of Vegetative Physiology; Charité - Universitätsmedizin Berlin; Corporate Member of Freie Universität Berlin; Humboldt-Universität zu Berlin, and Berlin Institute of Health; Berlin Germany
| |
Collapse
|
32
|
Øvrehus MA, Bruheim P, Ju W, Zelnick LR, Langlo KA, Sharma K, de Boer IH, Hallan SI. Gene Expression Studies and Targeted Metabolomics Reveal Disturbed Serine, Methionine, and Tyrosine Metabolism in Early Hypertensive Nephrosclerosis. Kidney Int Rep 2018; 4:321-333. [PMID: 30775629 PMCID: PMC6365407 DOI: 10.1016/j.ekir.2018.10.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 10/04/2018] [Accepted: 10/08/2018] [Indexed: 02/07/2023] Open
Abstract
Introduction Hypertensive nephrosclerosis is among the leading causes of end-stage renal disease, but its pathophysiology is poorly understood. We wanted to explore early metabolic changes using gene expression and targeted metabolomics analysis. Methods We analyzed gene expression in kidneys biopsied from 20 patients with nephrosclerosis and 31 healthy controls with an Affymetrix array. Thirty-one amino acids were measured by liquid chromatography coupled with mass spectrometry (LC-MS) in urine samples from 62 patients with clinical hypertensive nephrosclerosis and 33 age- and sex-matched healthy controls, and major findings were confirmed in an independent cohort of 45 cases and 15 controls. Results Amino acid catabolism and synthesis were strongly underexpressed in hypertensive nephrosclerosis (13- and 7-fold, respectively), and these patients also showed gene expression patterns indicating decreased fatty acid oxidation (12-fold) and increased interferon gamma (10-fold) and cellular defense response (8-fold). Metabolomics analysis revealed significant distribution differences in 11 amino acids in hypertensive nephrosclerosis, among them tyrosine, phenylalanine, dopamine, homocysteine, and serine, with 30% to 70% lower urine excretion. These findings were replicated in the independent cohort. Integrated gene-metabolite pathway analysis showed perturbations of renal dopamine biosynthesis. There were also significant differences in homocysteine/methionine homeostasis and the serine pathway, which have strong influence on 1-carbon metabolism. Several of these disturbances could be interconnected through reduced regeneration of tetrahydrofolate and tetrahydrobiopterin. Conclusion Early hypertensive nephrosclerosis showed perturbations of intrarenal biosynthesis of dopamine, which regulates natriuresis and blood pressure. There were also disturbances in serine/glycine and methionine/homocysteine metabolism, which may contribute to endothelial dysfunction, atherosclerosis, and renal fibrosis.
Collapse
Affiliation(s)
- Marius A Øvrehus
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Nephrology, St Olav Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Per Bruheim
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Wenjun Ju
- Division of Nephrology, Department of Medicine, University of Michigan, Ann Arbor, Michigan, USA.,Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Leila R Zelnick
- Kidney Research Institute, University of Washington, Seattle, Washington, USA.,Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Knut A Langlo
- Department of Nephrology, St Olav Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Kumar Sharma
- University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Ian H de Boer
- Kidney Research Institute, University of Washington, Seattle, Washington, USA.,Division of Nephrology, Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Stein I Hallan
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway.,Department of Nephrology, St Olav Hospital, Trondheim University Hospital, Trondheim, Norway
| |
Collapse
|
33
|
Stangenberg S, Saad S, Schilter HC, Zaky A, Gill A, Pollock CA, Wong MG. Lysyl oxidase-like 2 inhibition ameliorates glomerulosclerosis and albuminuria in diabetic nephropathy. Sci Rep 2018; 8:9423. [PMID: 29930330 PMCID: PMC6013429 DOI: 10.1038/s41598-018-27462-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 05/29/2018] [Indexed: 12/13/2022] Open
Abstract
Diabetic nephropathy is characterised by the excessive amount of extracellular matrix in glomeruli and tubulointerstitial space. Lysyl oxidase-like 2 (LOXL2) is elevated in renal fibrosis and known to play key roles in ECM stabilisation by facilitating collagen cross-links, epithelial to mesenchymal transition and myofibroblast activation. Thus, targeting LOXL2 may prove to be a useful strategy to prevent diabetic nephropathy. We explored the renoprotective effect of a selective small molecule LOXL2 inhibitor (PXS-S2B) in a streptozotocin-induced diabetes model. Diabetic mice were treated with PXS-S2B for 24 weeks and outcomes compared with untreated diabetic mice and with telmisartan treated animals as comparator of current standard of care. Diabetic mice had albuminuria, higher glomerulosclerosis scores, upregulation of fibrosis markers and increased renal cortical LOXL2 expression. Treatment with PXS-S2B reduced albuminuria and ameliorated glomerulosclerosis. This was associated with reduced expression of glomerular fibronectin and tubulointerstitial collagen I. The renoprotective effects of both PXS-S2B and telmisartan were more marked in the glomerular compartment than in the tubulointerstitial space. The study reveals that LOXL2 inhibition was beneficial in preserving glomerular structure and function. Thus, LOXL2 may be a potential therapeutic target in diabetic nephropathy.
Collapse
Affiliation(s)
- Stefanie Stangenberg
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.,Sydney Medical School Northern, University of Sydney, NSW, Sydney, Australia
| | - Sonia Saad
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.
| | - Heidi C Schilter
- Pharmaxis Pharmaceutical Ltd., Frenchs Forest, NSW, Sydney, Australia
| | - Amgad Zaky
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia
| | - Anthony Gill
- Department of Cancer Research and Pathology Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia
| | - Carol A Pollock
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.,Sydney Medical School Northern, University of Sydney, NSW, Sydney, Australia
| | - Muh Geot Wong
- Renal Research, Kolling Institute, Northern Sydney Local Health District, St Leonards, NSW, Sydney, Australia.
| |
Collapse
|
34
|
Zhou LT, Qiu S, Lv LL, Li ZL, Liu H, Tang RN, Ma KL, Liu BC. Integrative Bioinformatics Analysis Provides Insight into the Molecular Mechanisms of Chronic Kidney Disease. Kidney Blood Press Res 2018; 43:568-581. [PMID: 29642064 DOI: 10.1159/000488830] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 03/28/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Chronic kidney disease (CKD) is a worldwide public health problem. Regardless of the underlying primary disease, CKD tends to progress to end-stage kidney disease, resulting in unsatisfactory and costly treatment. Its common pathogenesis, however, remains unclear. The aim of this study was to provide an unbiased catalog of common gene-expression changes of CKD and reveal the underlying molecular mechanism using an integrative bioinformatics approach. METHODS We systematically collected over 250 Affymetrix microarray datasets from the glomerular and tubulointerstitial compartments of healthy renal tissues and those with various types of established CKD (diabetic kidney disease, hypertensive nephropathy, and glomerular nephropathy). Then, using stringent bioinformatics analysis, shared differentially expressed genes (DEGs) of CKD were obtained. These shared DEGs were further analyzed by the gene ontology (GO) and pathway enrichment analysis. Finally, the protein-protein interaction networks(PINs) were constructed to further refine our results. RESULTS Our analysis identified 176 and 50 shared DEGs in diseased glomeruli and tubules, respectively, including many transcripts that have not been previously reported to be involved in kidney disease. Enrichment analysis also showed that the glomerular and tubulointerstitial compartments underwent a wide range of unique pathological changes during chronic injury. As revealed by the GO enrichment analysis, shared DEGs in glomeruli were significantly enriched in exosomes. By constructing PINs, we identified several hub genes (e.g. OAS1, JUN, and FOS) and clusters that might play key roles in regulating the development of CKD. CONCLUSION Our study not only further reveals the unifying molecular mechanism of CKD pathogenesis but also provides a valuable resource of potential biomarkers and therapeutic targets.
Collapse
|
35
|
Ow CPC, Ngo JP, Ullah MM, Hilliard LM, Evans RG. Renal hypoxia in kidney disease: Cause or consequence? Acta Physiol (Oxf) 2018; 222:e12999. [PMID: 29159875 DOI: 10.1111/apha.12999] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 11/10/2017] [Accepted: 11/15/2017] [Indexed: 02/06/2023]
Abstract
Tissue hypoxia has been proposed as an important factor in the pathophysiology of both chronic kidney disease (CKD) and acute kidney injury (AKI), initiating and propagating a vicious cycle of tubular injury, vascular rarefaction, and fibrosis and thus exacerbation of hypoxia. Here, we critically evaluate this proposition by systematically reviewing the literature relevant to the following six questions: (i) Is kidney disease always associated with tissue hypoxia? (ii) Does tissue hypoxia drive signalling cascades that lead to tissue damage and dysfunction? (iii) Does tissue hypoxia per se lead to kidney disease? (iv) Does tissue hypoxia precede pathology? (v) Does tissue hypoxia colocalize with pathology? (vi) Does prevention of tissue hypoxia prevent kidney disease? We conclude that tissue hypoxia is a common feature of both AKI and CKD. Furthermore, at least under in vitro conditions, renal tissue hypoxia drives signalling cascades that lead to tissue damage and dysfunction. Tissue hypoxia itself can lead to renal pathology, independent of other known risk factors for kidney disease. There is also some evidence that tissue hypoxia precedes renal pathology, at least in some forms of kidney disease. However, we have made relatively little progress in determining the spatial relationships between tissue hypoxia and pathological processes (i.e. colocalization) or whether therapies targeted to reduce tissue hypoxia can prevent or delay the progression of renal disease. Thus, the hypothesis that tissue hypoxia is a "common pathway" to both AKI and CKD still remains to be adequately tested.
Collapse
Affiliation(s)
- C. P. C. Ow
- Cardiovascular Disease Program Biomedicine Discovery Institute and Department of Physiology Monash University Melbourne Vic. Australia
| | - J. P. Ngo
- Cardiovascular Disease Program Biomedicine Discovery Institute and Department of Physiology Monash University Melbourne Vic. Australia
| | - M. M. Ullah
- Cardiovascular Disease Program Biomedicine Discovery Institute and Department of Physiology Monash University Melbourne Vic. Australia
| | - L. M. Hilliard
- Cardiovascular Disease Program Biomedicine Discovery Institute and Department of Physiology Monash University Melbourne Vic. Australia
| | - R. G. Evans
- Cardiovascular Disease Program Biomedicine Discovery Institute and Department of Physiology Monash University Melbourne Vic. Australia
| |
Collapse
|
36
|
Liu T, Liu M, Shang P, Jin X, Liu W, Zhang Y, Li X, Ding Y, Li Y, Wen A. Investigation into the underlying molecular mechanisms of hypertensive nephrosclerosis using bioinformatics analyses. Mol Med Rep 2018; 17:4440-4448. [PMID: 29328390 PMCID: PMC5802219 DOI: 10.3892/mmr.2018.8405] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 11/24/2017] [Indexed: 12/11/2022] Open
Abstract
Hypertensive nephrosclerosis (HNS) is a major risk factor for end-stage renal disease. However, the underlying pathogenesis of HNS remains to be fully determined. The gene expression profile of GSE20602, which consists of 14 glomeruli samples from patients with HNS and 4 normal glomeruli control samples, was obtained from the Gene Expression Omnibus database. Gene ontology (GO) and pathway enrichment analyses were performed in order to investigate the functions and pathways of differentially expressed genes (DEGs). Pathway relation and co‑expression networks were constructed in order to identify key genes and signaling pathways involved in HNS. In total, 483 DEGs were identified to be associated with HNS, including 302 upregulated genes and 181 downregulated genes. Furthermore, GO analysis revealed that DEGs were significantly enriched in the small molecule metabolic process. In addition, pathway analysis also revealed that DEGs were predominantly involved in metabolic pathways. The tricarboxylic acid (TCA) cycle was identified as the hub pathway in the pathway relation network, whereas the sorbitol dehydrogenase (SORD) and cubulin (CUBN) genes were revealed to be the hub genes in the co‑expression network. The present study revealed that the SORD, CUBN and albumin genes as well as the TCA cycle and metabolic pathways are involved in the pathogenesis of HNS. The results of the present study may contribute to the determination of the molecular mechanisms underlying HNS, and provide insight into the exploration of novel targets for the diagnosis and treatment of HNS.
Collapse
Affiliation(s)
- Tianlong Liu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Minna Liu
- Department of Nephrology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Peijin Shang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xin Jin
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Wenxing Liu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yikai Zhang
- Department of Pharmacy, General Hospital of Shenyang Military Region, Shenyang, Liaoning 110016, P.R. China
| | - Xinfang Li
- Department of Inorganic Chemistry, School of Pharmacy, Second Military Medical University, Shanghai 200433, P.R. China
| | - Yi Ding
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Yuwen Li
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| |
Collapse
|
37
|
Luque Y, Lenoir O, Bonnin P, Hardy L, Chipont A, Placier S, Vandermeersch S, Xu-Dubois YC, Robin B, Lazareth H, Souyri M, Guyonnet L, Baudrie V, Camerer E, Rondeau E, Mesnard L, Tharaux PL. Endothelial Epas1 Deficiency Is Sufficient To Promote Parietal Epithelial Cell Activation and FSGS in Experimental Hypertension. J Am Soc Nephrol 2017; 28:3563-3578. [PMID: 28928136 DOI: 10.1681/asn.2016090960] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 06/29/2017] [Indexed: 11/03/2022] Open
Abstract
FSGS, the most common primary glomerular disorder causing ESRD, is a complex disease that is only partially understood. Progressive sclerosis is a hallmark of FSGS, and genetic tracing studies have shown that parietal epithelial cells participate in the formation of sclerotic lesions. The loss of podocytes triggers a focal activation of parietal epithelial cells, which subsequently form cellular adhesions with the capillary tuft. However, in the absence of intrinsic podocyte alterations, the origin of the pathogenic signal that triggers parietal epithelial cell recruitment remains elusive. In this study, investigation of the role of the endothelial PAS domain-containing protein 1 (EPAS1), a regulatory α subunit of the hypoxia-inducible factor complex, during angiotensin II-induced hypertensive nephropathy provided novel insights into FSGS pathogenesis in the absence of a primary podocyte abnormality. We infused angiotensin II into endothelial-selective Epas1 knockout mice and their littermate controls. Although the groups presented with identical high BP, endothelial-specific Epas1 gene deletion accentuated albuminuria with severe podocyte lesions and recruitment of pathogenic parietal glomerular epithelial cells. These lesions and dysfunction of the glomerular filtration barrier were associated with FSGS in endothelial Epas1-deficient mice only. These results indicate that endothelial EPAS1 has a global protective role during glomerular hypertensive injuries without influencing the hypertensive effect of angiotensin II. Furthermore, these findings provide proof of principle that endothelial-derived signaling can trigger FSGS and illustrate the potential importance of the EPAS1 endothelial transcription factor in secondary FSGS.
Collapse
Affiliation(s)
- Yosu Luque
- Critical Care Nephrology and Kidney Transplantation, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France.,Unité Mixte de Recherche S1155.,University Pierre and Marie Curie, Paris, France
| | - Olivia Lenoir
- Paris Cardiovascular Center (PARCC).,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Philippe Bonnin
- Department of Physiology, Hôpital Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris, France.,Unité Mixte de Recherche 965, and
| | | | - Anna Chipont
- Paris Cardiovascular Center (PARCC).,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | | | | | - Yi-Chun Xu-Dubois
- Critical Care Nephrology and Kidney Transplantation, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France.,Unité Mixte de Recherche S1155
| | - Blaise Robin
- Paris Cardiovascular Center (PARCC).,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Hélène Lazareth
- Paris Cardiovascular Center (PARCC).,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Michèle Souyri
- Institut Universitaire d'Hématologie, Institut National de la Santé et de la Recherche Médicale, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Léa Guyonnet
- National Cytometry Platform, Department of Infection and Immunity, Luxembourg Institute of Health, Esch-sur-Alzette, Luxembourg; and
| | | | - Eric Camerer
- Paris Cardiovascular Center (PARCC).,Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Eric Rondeau
- Critical Care Nephrology and Kidney Transplantation, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France.,Unité Mixte de Recherche S1155.,University Pierre and Marie Curie, Paris, France
| | - Laurent Mesnard
- Critical Care Nephrology and Kidney Transplantation, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France.,Unité Mixte de Recherche S1155.,University Pierre and Marie Curie, Paris, France
| | - Pierre-Louis Tharaux
- Paris Cardiovascular Center (PARCC), .,Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Renal Division, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris, Paris, France
| |
Collapse
|
38
|
López-Jiménez AJ, Basak T, Vanacore RM. Proteolytic processing of lysyl oxidase-like-2 in the extracellular matrix is required for crosslinking of basement membrane collagen IV. J Biol Chem 2017; 292:16970-16982. [PMID: 28864775 DOI: 10.1074/jbc.m117.798603] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/16/2017] [Indexed: 12/13/2022] Open
Abstract
Lysyl oxidase-like-2 (LOXL2) is an enzyme secreted into the extracellular matrix that crosslinks collagens by mediating oxidative deamination of lysine residues. Our previous work demonstrated that this enzyme crosslinks the 7S domain, a structural domain that stabilizes collagen IV scaffolds in the basement membrane. Despite its relevant role in extracellular matrix biosynthesis, little is known about the structural requirements of LOXL2 that enable collagen IV crosslinking. In this study, we demonstrate that LOXL2 is processed extracellularly by serine proteases, generating a 65-kDa form lacking the first two scavenger receptor cysteine-rich domains. Site-specific mutagenesis to prevent proteolytic processing generated a full-length enzyme that is active in vitro toward a soluble substrate, but fails to crosslink insoluble collagen IV within the extracellular matrix. In contrast, the processed form of LOXL2 binds to collagen IV and crosslinks the 7S domain. Together, our data demonstrate that proteolytic processing is an important event that allows LOXL2-mediated crosslinking of basement membrane collagen IV.
Collapse
Affiliation(s)
- Alberto J López-Jiménez
- From the Department of Medicine, Division of Nephrology and Hypertension and.,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Trayambak Basak
- From the Department of Medicine, Division of Nephrology and Hypertension and.,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Roberto M Vanacore
- From the Department of Medicine, Division of Nephrology and Hypertension and .,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| |
Collapse
|
39
|
Transcriptome-based network analysis reveals renal cell type-specific dysregulation of hypoxia-associated transcripts. Sci Rep 2017; 7:8576. [PMID: 28819298 PMCID: PMC5561250 DOI: 10.1038/s41598-017-08492-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 07/10/2017] [Indexed: 12/19/2022] Open
Abstract
Accumulating evidence suggests that dysregulation of hypoxia-regulated transcriptional mechanisms is involved in development of chronic kidney diseases (CKD). However, it remains unclear how hypoxia-induced transcription factors (HIFs) and subsequent biological processes contribute to CKD development and progression. In our study, genome-wide expression profiles of more than 200 renal biopsies from patients with different CKD stages revealed significant correlation of HIF-target genes with eGFR in glomeruli and tubulointerstitium. These correlations were positive and negative and in part compartment-specific. Microarrays of proximal tubular cells and podocytes with stable HIF1α and/or HIF2α suppression displayed cell type-specific HIF1/HIF2-dependencies as well as dysregulation of several pathways. WGCNA analysis identified gene sets that were highly coregulated within modules. Characterization of the modules revealed common as well as cell group- and condition-specific pathways, GO-Terms and transcription factors. Gene expression analysis of the hypoxia-interconnected pathways in patients with different CKD stages revealed an increased dysregulation with loss of renal function. In conclusion, our data clearly point to a compartment- and cell type-specific dysregulation of hypoxia-associated gene transcripts and might help to improve the understanding of hypoxia, HIF dysregulation, and transcriptional program response in CKD.
Collapse
|
40
|
Abstract
Chronic kidney disease (CKD) is a lethal and rapidly increasing burden on society. Despite this, there are relatively few therapies in development for the treatment of CKD. Several recent costly phase 3 trials have failed to provide improved renal outcomes, diminishing interest in pharmaceutical investment. Furthermore, poor patient, physician, and payer awareness of CKD as a diagnosis has contributed to slow trial enrollment and successful implementation of these trials. Nevertheless, several therapeutics remain in development for the treatment of CKD, including mineralocorticoid-receptor antagonists, sodium/glucose cotransporter 2 inhibitors, anti-inflammatory drugs, and drugs that mitigate oxidative injury. Success of future CKD therapeutic trials will depend not only on improved understanding of disease pathogenesis, but also on improved trial enrollment rates, through increasing awareness of this disease by the public, policy makers, and the greater medical community.
Collapse
Affiliation(s)
- Matthew D Breyer
- Biotechnology Discovery Research, Eli Lilly and Company, Indianapolis, IN.
| | - Katalin Susztak
- Renal Electrolyte and Hypertension Division, Department of Medicine, University of Pennsylvania, Philadelphia, PA
| |
Collapse
|
41
|
Añazco C, López-Jiménez AJ, Rafi M, Vega-Montoto L, Zhang MZ, Hudson BG, Vanacore RM. Lysyl Oxidase-like-2 Cross-links Collagen IV of Glomerular Basement Membrane. J Biol Chem 2016; 291:25999-26012. [PMID: 27770022 DOI: 10.1074/jbc.m116.738856] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 10/06/2016] [Indexed: 01/08/2023] Open
Abstract
The 7S dodecamer is recognized as an important structural cross-linking domain of collagen IV networks that provide mechanical stability to basement membranes, a specialized form of extracellular matrix essential for the development and maintenance of tissue architecture. Although the 7S dodecamer is stabilized by covalent cross-linking, the molecular mechanism by which such cross-links are formed has not been revealed. Here, we aimed to identify the enzyme(s) that cross-links the 7S dodecamer and characterize its expression in the kidney glomerulus. Pharmacological inhibition of candidate extracellular matrix enzymes revealed that lysyl oxidase activity is required for cross-linking of 7S polypeptides. Among all lysyl oxidase family members, lysyl oxidase-like-2 (LOXL2) was identified as the isoform cross-linking collagen IV in mouse embryonal PFHR-9 cells. Biochemical analyses revealed that LOXL2 readily promoted the formation of lysyl-derived cross-links in the 7S dodecamer but not in the NC1 domain. We also established that LOXL2 is the main lysyl oxidase family member present in the glomerular extracellular matrix. Altogether, we demonstrate that LOXL2 is a novel component of the molecular machinery that forms cross-linked collagen IV networks, which are essential for glomerular basement membrane stability and molecular ultrafiltration function.
Collapse
Affiliation(s)
- Carolina Añazco
- From the Division of Nephrology and Hypertension, Department of Medicine, and.,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Alberto J López-Jiménez
- From the Division of Nephrology and Hypertension, Department of Medicine, and.,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Mohamed Rafi
- From the Division of Nephrology and Hypertension, Department of Medicine, and
| | - Lorenzo Vega-Montoto
- From the Division of Nephrology and Hypertension, Department of Medicine, and.,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Ming-Zhi Zhang
- From the Division of Nephrology and Hypertension, Department of Medicine, and
| | - Billy G Hudson
- From the Division of Nephrology and Hypertension, Department of Medicine, and.,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Roberto M Vanacore
- From the Division of Nephrology and Hypertension, Department of Medicine, and .,Center for Matrix Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| |
Collapse
|
42
|
Poveda J, Sanz AB, Fernandez-Fernandez B, Carrasco S, Ruiz-Ortega M, Cannata-Ortiz P, Ortiz A, Sanchez-Niño MD. MXRA5 is a TGF-β1-regulated human protein with anti-inflammatory and anti-fibrotic properties. J Cell Mol Med 2016; 21:154-164. [PMID: 27599751 PMCID: PMC5192817 DOI: 10.1111/jcmm.12953] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 07/12/2016] [Indexed: 01/15/2023] Open
Abstract
Current therapy for chronic kidney disease (CKD) is unsatisfactory because of an insufficient understanding of its pathogenesis. Matrix remodelling-associated protein 5 (MXRA5, adlican) is a human protein of unknown function with high kidney tissue expression, not present in rodents. Given the increased expression of MXRA5 in injured tissues, including the kidneys, we have suggested that MXRA5 may modulate kidney injury. MXRA5 immunoreactivity was observed in tubular cells in human renal biopsies and in urine from CKD patients. We then explored factors regulating MXRA5 expression and MXRA5 function in cultured human proximal tubular epithelial cells and explored MXRA5 expression in kidney cancer cells and kidney tissue. The fibrogenic cytokine transforming growth factor-β1 (TGFβ1) up-regulated MXRA5 mRNA and protein expression. TGFβ1-induced MXRA5 up-regulation was prevented by either interference with TGFβ1 activation of the TGFβ receptor 1 (TGFBR1, ALK5) or by the vitamin D receptor agonist paricalcitol. By contrast, the pro-inflammatory cytokine TWEAK did not modulate MXRA5 expression. MXRA5 siRNA-induced down-regulation of constitutive MXRA5 expression resulted in higher TWEAK-induced expression of chemokines. In addition, MXRA5 down-regulation resulted in a magnified expression of genes encoding extracellular matrix proteins in response to TGFβ1. Furthermore, in clear cell renal cancer, von Hippel-Lindau (VHL) regulated MXRA5 expression. In conclusion, MXRA5 is a TGFβ1- and VHL-regulated protein and, for the first time, we identify MXRA5 functions as an anti-inflammatory and anti-fibrotic molecule. This information may yield clues to design novel therapeutic strategies in diseases characterized by inflammation and fibrosis.
Collapse
Affiliation(s)
- Jonay Poveda
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain
| | - Ana B Sanz
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain
| | | | - Susana Carrasco
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain
| | - Marta Ruiz-Ortega
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain.,School of Medicine, Universidad Autonoma de Madrid, Madrid, Spain
| | - Pablo Cannata-Ortiz
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain
| | - Alberto Ortiz
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain.,School of Medicine, Universidad Autonoma de Madrid, Madrid, Spain.,Fundacion Renal Iñigo Alvarez de Toledo-IRSIN, Madrid, Spain
| | - Maria D Sanchez-Niño
- IIS-Fundacion Jimenez Diaz Universidad Autonoma de Madrid, REDINREN, Madrid, Spain
| |
Collapse
|
43
|
Hypoxia-inducible factor-1α promotes glomerulosclerosis and regulates COL1A2 expression through interactions with Smad3. Kidney Int 2016; 90:797-808. [PMID: 27503806 DOI: 10.1016/j.kint.2016.05.026] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/25/2016] [Accepted: 05/26/2016] [Indexed: 02/07/2023]
Abstract
The function of hypoxia-inducible factor-1α (HIF-1α) in chronic kidney disease is disputed. Here we report that interactions of HIF-1α with transforming growth factor-β (TGF-β) signaling may promote its fibrotic effects. Knockout of HIF-1α is protective against glomerulosclerosis and glomerular type-I collagen accumulation in a mouse podocyte ablation model. Transcriptional analysis of cultured renal cells showed that α2(I) collagen expression is directly regulated by HIF-1α binding to a functional hypoxia-responsive element in its promoter at -335 relative to the transcription start site. Activation of COL1A2 transcription by HIF-1α occurred in the absence of hypoxia and is strongly enhanced by TGF-β signaling. TGF-β, in addition to increasing HIF-1α levels, increased both HIF-1α binding to the COL1A2 promoter and HIF-1α N-terminal transactivation domain activity. These effects of TGF-β on HIF-1α were inhibited in Smad3-null mouse embryonic fibroblasts, suggesting a requirement for Smad3. Phosphorylated Smad3 also associated with the -335 hypoxia-responsive element of the COL1A2 promoter independent of a Smad DNA binding sequence. Smad3 binding to the -335 hypoxia-responsive element required HIF-1α both in vitro and in kidney lysate from the disease model, suggesting formation of an HIF-1α-Smad3 transcriptional complex. Thus, HIF-1α-Smad3 has a novel interaction in glomerulosclerosis.
Collapse
|
44
|
Abstract
Chronic kidney disease (CKD) represents a leading cause of death in the United States. There is no cure for this disease, with current treatment strategies relying on blood pressure control through blockade of the renin-angiotensin system. Such approaches only delay the development of end-stage kidney disease and can be associated with serious side effects. Recent identification of several novel mechanisms contributing to CKD development - including vascular changes, loss of podocytes and renal epithelial cells, matrix deposition, inflammation and metabolic dysregulation - has revealed new potential therapeutic approaches for CKD. This Review assesses emerging strategies and agents for CKD treatment, highlighting the associated challenges in their clinical development.
Collapse
|
45
|
Narita I, Shimada M, Yamabe H, Kinjo T, Tanno T, Nishizaki K, Kawai M, Nakamura M, Murakami R, Nakamura N, Tomita H, Saleem MA, Mathieson PW, Okumura K. NF-κB-dependent increase in tissue factor expression is responsible for hypoxic podocyte injury. Clin Exp Nephrol 2015; 20:679-688. [PMID: 26715508 DOI: 10.1007/s10157-015-1214-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 12/09/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND Fibrin deposition within glomeruli is commonly seen in kidney biopsy specimens, suggesting enhanced coagulant activity. Tissue factor (TF) is a coagulation factor which is also related to various biological effects, and TF is upregulated by hypoxia in cancer cells. Recently, hypoxic podocyte injury has been proposed, therefore, we investigated TF expression in hypoxia. METHODS Conditionally immortalized human podocytes were differentiated and treated under hypoxic or normoxic conditions. mRNA expressions of TF and tissue factor pathway inhibitor (TFPI) were analyzed by quantitative RT-PCR. Protein levels of TF and TFPI were tested by enzyme-linked immunosorbent assay. We employed small interfering RNA (siRNA) to temporary knockdown early growth response protein 1 (Egr-1), hypoxia-inducible factor-1α (HIF-1α) and TF. The expression of CD2-associated protein (CD2AP) mRNA and phalloidin staining was examined to assess podocyte injury. RESULTS Hypoxia increased mRNA expression of TF (6 h: 2.3 ± 0.05 fold, p < 0.001, 24 h: 5.6 ± 2.4 fold, p < 0.05) and suppressed TFPI (6 h: 0.54 ± 0.04 fold, p < 0.05, 24 h: 0.24 ± 0.06 fold, p < 0.001) compared with normoxia. Similarly, protein levels of TF were increased and TFPI were decreased. Egr-1 siRNA did not change TF mRNA expression. Pyrrolidine dithiocarbamate (PDTC), a nuclear factor kappa B (NF-κB) inhibitor, significantly reduced hypoxia induced TF expression, and HIF-1α knockdown further increased TF. Hypoxia resulted in decreased CD2AP and actin reorganization in podocytes, and these changes were attenuated by TF siRNA. CONCLUSION Hypoxia increased the expression of TF in human podocytes NF-κB dependently. TF may have a critical role in the hypoxic podocyte injury.
Collapse
Affiliation(s)
- Ikuyo Narita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Michiko Shimada
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan.
| | - Hideaki Yamabe
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Takahiko Kinjo
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Tomohiro Tanno
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Kimitaka Nishizaki
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Misato Kawai
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Masayuki Nakamura
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Reiichi Murakami
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Norio Nakamura
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Hirofumi Tomita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| | - Moin A Saleem
- Bristol Renal, University of Bristol, Dorothy Hodgkin Building, Bristol, UK
| | | | - Ken Okumura
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, 036-8562, Japan
| |
Collapse
|
46
|
Lovisa S, LeBleu VS, Tampe B, Sugimoto H, Vadnagara K, Carstens JL, Wu CC, Hagos Y, Burckhardt BC, Pentcheva-Hoang T, Nischal H, Allison JP, Zeisberg M, Kalluri R. Epithelial-to-mesenchymal transition induces cell cycle arrest and parenchymal damage in renal fibrosis. Nat Med 2015; 21:998-1009. [PMID: 26236991 PMCID: PMC4587560 DOI: 10.1038/nm.3902] [Citation(s) in RCA: 679] [Impact Index Per Article: 75.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 06/15/2015] [Indexed: 02/06/2023]
Abstract
Kidney fibrosis is marked by an epithelial–to–mesenchymal transition (EMT) by tubular epithelial cells (TECs). Here we find that during renal fibrosis TECs acquire a partial EMT program during which they remain associated with their basement membrane and express markers of both epithelial and mesenchymal cells. The functional consequence of EMT program during fibrotic injury is an arrest in the G2 phase of the cell cycle and lower expression of several transporters in TECs. We also found that transgenic expression of Twist or Snai1 expression is sufficient to promote prolonged TGF-β1–induced G2 arrest of TECs, limiting their potential for repair and regeneration. Also, in mouse models of experimentally-induced renal fibrosis, conditional deletion of Twist1 or Snai1 in proximal TECs resulted in inhibition of the EMT program and the maintenance of TEC integrity, while restoring proliferation, de–differentiation–associated repair and regeneration of the kidney parenchyma and attenuating interstitial fibrosis. Thus, inhibition of EMT program in TECs during chronic renal injury represents a potential anti–fibrosis therapy
Collapse
Affiliation(s)
- Sara Lovisa
- Department of Cancer Biology, Metastasis Research Center, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Valerie S LeBleu
- Department of Cancer Biology, Metastasis Research Center, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Björn Tampe
- Department of Nephrology and Rheumatology, Göttingen University Medical Center, Georg August University, Göttingen, Germany
| | - Hikaru Sugimoto
- Department of Cancer Biology, Metastasis Research Center, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Komal Vadnagara
- Department of Cancer Biology, Metastasis Research Center, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Julienne L Carstens
- Department of Cancer Biology, Metastasis Research Center, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Chia-Chin Wu
- Department of Genomic Medicine, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Yohannes Hagos
- Institute of Systemic Physiology and Pathophysiology, Göttingen University Medical Center, Georg August University, Göttingen, Germany
| | - Birgitta C Burckhardt
- Institute of Systemic Physiology and Pathophysiology, Göttingen University Medical Center, Georg August University, Göttingen, Germany
| | | | - Hersharan Nischal
- Department of Immunology, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - James P Allison
- Department of Immunology, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| | - Michael Zeisberg
- Department of Nephrology and Rheumatology, Göttingen University Medical Center, Georg August University, Göttingen, Germany
| | - Raghu Kalluri
- Department of Cancer Biology, Metastasis Research Center, University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA
| |
Collapse
|
47
|
Zhao B, Yang H, Zhang R, Sun H, Liao C, Xu J, Meng K, Jiao J. The role of TRPC6 in oxidative stress-induced podocyte ischemic injury. Biochem Biophys Res Commun 2015; 461:413-20. [PMID: 25896763 DOI: 10.1016/j.bbrc.2015.04.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 04/08/2015] [Indexed: 10/23/2022]
Abstract
Increasing evidence suggests that ischemia and hypoxia serve important functions in the development of renal diseases. However, the underlying mechanism of ischemic injury has not been fully understood. In this study, we found that renal ischemia-reperfusion injury induced podocyte effacement and the upregulation of TRPC6 mRNA and protein expression. In in vitro experiments, oxygen glucose deprivation (OGD) treatment enhanced the expression of TRPC6 and TRPC6-dependent Ca(2+) influx. TRPC6 knockdown by siRNA interference attenuated the OGD-induced [Ca(2+)]i and actin assembly. OGD treatment also increased ROS production. Furthermore, inhibition of ROS activity by N-acetyl-l-cysteine (NAC) eliminated the OGD-induced increase in TRPC6 expression and Ca(2+) influx. H2O2 treatment, which results in oxidative stress, also increased TRPC6 expression and Ca(2+) influx. We conclude that TRPC6 upregulation is involved in Ca(2+) signaling and actin reorganization in podocytes after OGD. These findings provide new insight into the mechanisms underlying the cellular response of podocytes to ischemic injury.
Collapse
Affiliation(s)
- Bo Zhao
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China; Department of Nephrology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - He Yang
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Rui Zhang
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hui Sun
- Department of Emergency, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chang Liao
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jia Xu
- Department of Nephrology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kexin Meng
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Jundong Jiao
- Department of Nephrology, The Second Affiliated Hospital of Harbin Medical University, Harbin, China; Institute of Nephrology, Harbin Medical University, Harbin, China.
| |
Collapse
|
48
|
Abstract
For a century, nephrosclerosis was ascribed to nonmalignant hypertension and aging. However, it was intuitively perceived that hypertension may follow rather than explain this nephrovasculopathy. Hypertensive nephrosclerosis was long considered a major cause of end-stage renal failure (ESRD). This is especially true in blacks of African descent but not in other ethnic populations. The term 'nephrosclerosis' is still an easy way out to classify a patient with renal insufficiency. This leads to neglect the possibility of an overlooked nephropathy complicated by hypertension and to believe that drastic blood pressure control may retard the progression to ESRD. Several clinical and experimental lines of evidence lead to the understanding that nephrosclerosis, especially in blacks, is a genetic renovasculopathy that precedes the rise in blood pressure. The identification of coding region variants in APOL1 encoding apolipoprotein L-1 in black but also white and Asians opens new lines of research on the genetics of nephroangiosclerosis and of FSGS. Metabolic derangements, such as obesity, oxidative stress, dyslipidemia and atherosclerosis may be considered confounding factors with regard to nephrosclerosis. Histomorphometric studies led to sorting out the lesions due to aging from those stemming from hypertension. They shed new light not only on glomerular lesions that comprise ischemic obsolescence but also on glomerulomegaly and focal-segmental sclerosis, the latter due to a loss of renal autoregulation. It appears that the control of hypertension is not credited with the expected benefit for slowing the decline of renal function. 'Nephrosclerosis' can be considered an umbrella term of poor significance that should be replaced by its pathologic description, that is, arterionephrosclerosis and incite to elucidate the various genetic and metabolic factors that lead to a lesion in quest of a specific disease.
Collapse
Affiliation(s)
- Alain Meyrier
- Service de Néphrologie, AP-HP, Hôpital Georges Pompidou, Université Paris-Descartes, Paris, France
| |
Collapse
|
49
|
Siddiqi FS, Chen LH, Advani SL, Thai K, Batchu SN, Alghamdi TA, White KE, Sood MM, Gibson IW, Connelly KA, Marsden PA, Advani A. CXCR4 promotes renal tubular cell survival in male diabetic rats: implications for ligand inactivation in the human kidney. Endocrinology 2015; 156:1121-32. [PMID: 25549045 DOI: 10.1210/en.2014-1650] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Binding of the receptor CXCR4 to its ligand stromal cell-derived factor 1 (SDF-1) promotes cell survival and is under the influence of a number of regulatory processes including enzymatic ligand inactivation by endopeptidases such as matrix metalloproteinase 9 (MMP-9). In light of the pivotal role that the SDF-1/CXCR4 axis plays in renal development and in the pathological growth of renal cells, we explored the function of this pathway in diabetic rats and in biopsies from patients with diabetic nephropathy, hypothesizing that the pro-survival effects of CXCR4 in resident cells would attenuate renal injury. Renal CXCR4 expression was observed to be increased in diabetic rats, whereas antagonism of the receptor unmasked albuminuria and accelerated tubular epithelial cell death. In cultured cells, CXCR4 blockade promoted tubular cell apoptosis, up-regulated Bcl-2-associated death promoter, and prevented high glucose/SDF-1-augmented phosphorylation of the pro-survival kinase, Akt. Although CXCR4 expression was also increased in biopsy tissue from patients with diabetic nephropathy, serine 339 phosphorylation of the receptor, indicative of ligand engagement, was unaffected. Coincident with these changes in receptor expression but not activity, MMP-9 was also up-regulated in diabetic nephropathy biopsies. Supporting a ligand-inactivating effect of the endopeptidase, exposure of cultured cells to recombinant MMP-9 abrogated SDF-1 induced Akt phosphorylation. These observations demonstrate a potentially reno-protective role for CXCR4 in diabetes that is impeded in its actions in the human kidney by the coincident up-regulation of ligand-inactivating endopeptidases. Therapeutically intervening in this interplay may limit tubulointerstitial injury, the principal determinant of renal decline in diabetes.
Collapse
Affiliation(s)
- Ferhan S Siddiqi
- Keenan Research Centre for Biomedical Science and Li Ka Shing Knowledge Institute of St. Michael's Hospital (F.S.S., L.H.C., S.L.A., K.T., S.N.B., T.A.A., K.A.C., P.A.M., A.A.), Toronto, Canada M5B 1T8; EM Research Services (K.E.W.), Newcastle University, Newcastle upon Tyne, United Kingdom NE2 4HH; Ottawa Hospital Research Institute (M.M.S.), University of Ottawa, Ottawa, Canada K1Y 4E9; and Department of Pathology (I.W.G.), University of Manitoba, Winnipeg, Canada R3A 1R9
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Ting H, Liou CM, Shih TS, Wang CH, Chang SY, Chung AH, Lee JF, Wang L, Huang RJ, Lee SD. Obstructive sleep apnea rather than diabetes or obesity associated with proteinuria in late mid-aged male workers: a decision tree analysis. Sleep Breath 2015; 19:1167-74. [PMID: 25876173 DOI: 10.1007/s11325-015-1132-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 12/28/2014] [Accepted: 01/22/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND Both proteinuria and obstructive sleep apnea (OSA) are associated with cardiovascular events and consequent mortality. To examine whether age, OSA, diabetes, and obesity are potential predictors of proteinuria, a data-driven analysis was performed to delineate a potential categorical classification algorithm. METHODS In this cross-sectional community-based cohort study, demographic data, blood pressure, serum biochemical analyses, proteinuria via single dipstick urinalysis, and overnight polysomnographies were measured in 300 males with sedentary work styles. RESULTS Sixty-one (20.3 %) of all these participants had proteinuria. Logistic regression analysis showed that glycated hemoglobin (HbA1c), duration of arterial oxygen saturation <90 %, age, and log high-sensitivity C-reactive protein, but not apnea-hypopnea index (AHI), were responsible for 16.7 % of the variance of proteinuria's presence. A decision tree analysis showed that subjects over 49 years old had a higher risk for proteinuria than those subjects of 49 years old, or less. In the over 49-year-old group, subjects with an AHI >21 events/h had a higher risk for proteinuria; whereas in the 49-year-old and less group, subjects with HbA1c >7 %, or with HbA1c ≤7, and body mass index (BMI) >27.4 kg/m(2) had a higher risk for proteinuria than their counterparts. CONCLUSIONS AHI was the major determinant responsible for the presence of proteinuria in late mid-aged male workers, while HbA1c and BMI were found in the junior subgroup. By algorithmic analysis, this study provides a comprehensive hierarchical model for better understanding of the correlates of proteinuria and sleep apnea.
Collapse
Affiliation(s)
- Hua Ting
- Department of Physical Medicine and Rehabilitation, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan.,Center of Sleep Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan.,Institute of Medicine, Chung-Shan Medical University, Taichung, Taiwan
| | - Cher-Ming Liou
- Institute of Medicine, Chung-Shan Medical University, Taichung, Taiwan.,Department of Anesthesiology, Chung-Shan Medical University Hospital, Taichung, Taiwan
| | - Tung-Sheng Shih
- Institute of Occupational Safety and Health Council of Labor Affairs, Executive Yuan, Taipei, Taiwan.,Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan
| | - Chih-Huan Wang
- Center of Sleep Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan.,Department of Psychology, National Chengchi University, Taipei, Taiwan
| | - Shu-Yun Chang
- Center of Sleep Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan.,Institute of Medicine, Chung-Shan Medical University, Taichung, Taiwan
| | - Ai-Hui Chung
- Center of Sleep Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan
| | - Jia-Fei Lee
- Center of Sleep Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan
| | - Lee Wang
- Department of Public Health, Chung-Shan Medical University, Taichung, Taiwan
| | - Ren-Jing Huang
- Center of Sleep Medicine, Chung-Shan Medical University Hospital, Chung-Shan Medical University, Taichung, Taiwan.,Department of Medical Image and Radiological Sciences, Chung-Shan Medical University, Taichung, Taiwan
| | - Shin-Da Lee
- Department of Physical Therapy and Graduate Institute of Rehabilitation Science, China Medical University, 91 Hsueh-Shih Road, Taichung, 40202, Taiwan. .,Department of Healthcare Administration, Asia University, Taichung, Taiwan. .,School of Rehabilitation Medicine, Shanghai University of TCM, Shanghai, China.
| |
Collapse
|