1
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Finn LS. Nephrotic Syndrome Throughout Childhood: Diagnosing Podocytopathies From the Womb to the Dorm. Pediatr Dev Pathol 2024:10935266241242669. [PMID: 38745407 DOI: 10.1177/10935266241242669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The etiologies of podocyte dysfunction that lead to pediatric nephrotic syndrome (NS) are vast and vary with age at presentation. The discovery of numerous novel genetic podocytopathies and the evolution of diagnostic technologies has transformed the investigation of steroid-resistant NS while simultaneously promoting the replacement of traditional morphology-based disease classifications with a mechanistic approach. Podocytopathies associated with primary and secondary steroid-resistant NS manifest as diffuse mesangial sclerosis, minimal change disease, focal segmental glomerulosclerosis, and collapsing glomerulopathy. Molecular testing, once an ancillary option, has become a vital component of the clinical investigation and when paired with kidney biopsy findings, provides data that can optimize treatment and prognosis. This review focuses on the causes including selected monogenic defects, clinical phenotypes, histopathologic findings, and age-appropriate differential diagnoses of nephrotic syndrome in the pediatric population with an emphasis on podocytopathies.
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Affiliation(s)
- Laura S Finn
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at The University of Pennsylvania, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
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2
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Treacy NJ, Clerkin S, Davis JL, Kennedy C, Miller AF, Saiani A, Wychowaniec JK, Brougham DF, Crean J. Growth and differentiation of human induced pluripotent stem cell (hiPSC)-derived kidney organoids using fully synthetic peptide hydrogels. Bioact Mater 2023; 21:142-156. [PMID: 36093324 PMCID: PMC9420433 DOI: 10.1016/j.bioactmat.2022.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 06/27/2022] [Accepted: 08/01/2022] [Indexed: 11/15/2022] Open
Abstract
Human induced pluripotent stem cell (hiPSC)-derived kidney organoids have prospective applications ranging from basic disease modelling to personalised medicine. However, there remains a necessity to refine the biophysical and biochemical parameters that govern kidney organoid formation. Differentiation within fully-controllable and physiologically relevant 3D growth environments will be critical to improving organoid reproducibility and maturation. Here, we matured hiPSC-derived kidney organoids within fully synthetic self-assembling peptide hydrogels (SAPHs) of variable stiffness (storage modulus, G'). The resulting organoids contained complex structures comparable to those differentiated within the animal-derived matrix, Matrigel. Single-cell RNA sequencing (scRNA-seq) was then used to compare organoids matured within SAPHs to those grown within Matrigel or at the air-liquid interface. A total of 13,179 cells were analysed, revealing 14 distinct clusters. Organoid compositional analysis revealed a larger proportion of nephron cell types within Transwell-derived organoids, while SAPH-derived organoids were enriched for stromal-associated cell populations. Notably, differentiation within a higher G' SAPH generated podocytes with more mature gene expression profiles. Additionally, maturation within a 3D microenvironment significantly reduced the derivation of off-target cell types, which are a known limitation of current kidney organoid protocols. This work demonstrates the utility of synthetic peptide-based hydrogels with a defined stiffness, as a minimally complex microenvironment for the selected differentiation of kidney organoids.
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Affiliation(s)
- Niall J Treacy
- Diabetes Complications Research Centre, University College Dublin (UCD) Conway Institute of Biomolecular and Biomedical Research and Belfield, Dublin 4, Ireland.,UCD School of Biomolecular and Biomedical Science, Belfield, Dublin 4, Ireland
| | - Shane Clerkin
- Diabetes Complications Research Centre, University College Dublin (UCD) Conway Institute of Biomolecular and Biomedical Research and Belfield, Dublin 4, Ireland.,UCD School of Biomolecular and Biomedical Science, Belfield, Dublin 4, Ireland
| | - Jessica L Davis
- Diabetes Complications Research Centre, University College Dublin (UCD) Conway Institute of Biomolecular and Biomedical Research and Belfield, Dublin 4, Ireland.,UCD School of Biomolecular and Biomedical Science, Belfield, Dublin 4, Ireland
| | - Ciarán Kennedy
- Diabetes Complications Research Centre, University College Dublin (UCD) Conway Institute of Biomolecular and Biomedical Research and Belfield, Dublin 4, Ireland.,UCD School of Biomolecular and Biomedical Science, Belfield, Dublin 4, Ireland
| | - Aline F Miller
- Department of Materials & Manchester Institute of Biotechnology (MIB), School of Natural Sciences, Faculty of Science and Engineering, The University of Manchester, UK
| | - Alberto Saiani
- Department of Materials & Manchester Institute of Biotechnology (MIB), School of Natural Sciences, Faculty of Science and Engineering, The University of Manchester, UK
| | - Jacek K Wychowaniec
- UCD School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Dermot F Brougham
- UCD School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - John Crean
- Diabetes Complications Research Centre, University College Dublin (UCD) Conway Institute of Biomolecular and Biomedical Research and Belfield, Dublin 4, Ireland.,UCD School of Biomolecular and Biomedical Science, Belfield, Dublin 4, Ireland
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3
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Medina Rangel PX, Cross E, Liu C, Pedigo CE, Tian X, Gutiérrez-Calabrés E, Nagata S, Priyadarshini A, Lerner G, Bunda P, Perincheri S, Gu J, Zhao H, Wang Y, Inoue K, Ishibe S. Cell Cycle and Senescence Regulation by Podocyte Histone Deacetylase 1 and 2. J Am Soc Nephrol 2023; 34:433-450. [PMID: 36414418 PMCID: PMC10103311 DOI: 10.1681/asn.2022050598] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 10/17/2022] [Accepted: 11/06/2022] [Indexed: 11/24/2022] Open
Abstract
SIGNIFICANCE STATEMENT The loss of integrity of the glomerular filtration barrier results in proteinuria that is often attributed to podocyte loss. Yet how damaged podocytes are lost remains unknown. Germline loss of murine podocyte-associated Hdac1 and Hdac2 ( Hdac1/2 ) results in proteinuria and collapsing glomerulopathy due to sustained double-stranded DNA damage. Hdac1/2 deletion induces loss of podocyte quiescence, cell cycle entry, arrest in G1, and podocyte senescence, observed both in vivo and in vitro . Through the senescence secretory associated phenotype, podocytes secrete proteins that contribute to their detachment. These results solidify the role of HDACs in cell cycle regulation and senescence, providing important clues in our understanding of how podocytes are lost following injury. BACKGROUND Intact expression of podocyte histone deacetylases (HDAC) during development is essential for maintaining a normal glomerular filtration barrier because of its role in modulating DNA damage and preventing premature senescence. METHODS Germline podocyte-specific Hdac1 and 2 ( Hdac1 / 2 ) double-knockout mice were generated to examine the importance of these enzymes during development. RESULTS Podocyte-specific loss of Hdac1 / 2 in mice resulted in severe proteinuria, kidney failure, and collapsing glomerulopathy. Hdac1 / 2 -deprived podocytes exhibited classic characteristics of senescence, such as senescence-associated β-galactosidase activity and lipofuscin aggregates. In addition, DNA damage, likely caused by epigenetic alterations such as open chromatin conformation, not only resulted in podocyte cell-cycle entry as shown in vivo by Ki67 expression and by FUCCI-2aR mice, but also in p21-mediated cell-cycle arrest. Through the senescence secretory associated phenotype, the damaged podocytes secreted proinflammatory cytokines, growth factors, and matrix metalloproteinases, resulting in subsequent podocyte detachment and loss, evidenced by senescent podocytes in urine. CONCLUSIONS Hdac1 / 2 plays an essential role during development. Loss of these genes in double knockout mice leads to sustained DNA damage and podocyte senescence and loss.
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Affiliation(s)
| | - Elizabeth Cross
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Chang Liu
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Christopher E. Pedigo
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Xuefei Tian
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | | | - Soichiro Nagata
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Anupama Priyadarshini
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Gabriel Lerner
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
| | - Patricia Bunda
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Sudhir Perincheri
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut
| | - Jianlei Gu
- Department of Biostatistics, Yale University School of Public Health, New Haven, Connecticut
| | - Hongyu Zhao
- Department of Biostatistics, Yale University School of Public Health, New Haven, Connecticut
| | - Ying Wang
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Kazunori Inoue
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Shuta Ishibe
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut
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4
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Ahmed I, Ziab M, Da’as S, Hasan W, Jeya SP, Aliyev E, Nisar S, Bhat AA, Fakhro KA, Alshabeeb Akil AS. Network-based identification and prioritization of key transcriptional factors of diabetic kidney disease. Comput Struct Biotechnol J 2023; 21:716-730. [PMID: 36659918 PMCID: PMC9827363 DOI: 10.1016/j.csbj.2022.12.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/29/2022] [Accepted: 12/30/2022] [Indexed: 01/04/2023] Open
Abstract
Diabetic nephropathy (DN) is one of the most established microvascular complications of diabetes and a key cause of end-stage renal disease. It is well established that gene susceptibility to DN plays a critical role in disease pathophysiology. Therefore, many genetic studies have been performed to categorize candidate genes in prominent diabetic cohorts, aiming to investigate DN pathogenesis and etiology. In this study, we performed a meta-analysis on the expression profiles of GSE1009, GSE30122, GSE96804, GSE99340, GSE104948, GSE104954, and GSE111154 to identify critical transcriptional factors associated with DN progression. The analysis was conducted for all individual datasets for each kidney tissue (glomerulus, tubules, and kidney cortex). We identified distinct clusters of susceptibility genes that were dysregulated in a renal compartment-specific pattern. Further, we recognized a small but a closely connected set of these susceptibility genes enriched for podocyte differentiation, several of which were characterized as genes encoding critical transcriptional factors (TFs) involved in DN development and podocyte function. To validate the role of identified TFs in DN progression, we functionally validated the three main TFs (DACH1, LMX1B, and WT1) identified through differential gene expression and network analysis using the hyperglycemic zebrafish model. We report that hyperglycemia-induced altered gene expression of the key TF genes leads to morphological abnormalities in zebrafish glomeruli, pronephric tubules, proximal and distal ducts. This study demonstrated that altered expression of these TF genes could be associated with hyperglycemia-induced nephropathy and, thus, aids in understanding the molecular drivers, essential genes, and pathways that trigger DN initiation and development.
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Affiliation(s)
- Ikhlak Ahmed
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Mubarak Ziab
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Sahar Da’as
- Zebrafish Functional Genomics, Integrated Genomic Services Core Facility, Research Branch, Sidra Medicine, P.O. Box 26999, Doha, Qatar,College of Health and Life Sciences, Hamad Bin Khalifa University, P.O. Box 34110, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Waseem Hasan
- Zebrafish Functional Genomics, Integrated Genomic Services Core Facility, Research Branch, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Sujitha P. Jeya
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Elbay Aliyev
- Human Genetics Department, Laboratory of Genomic Medicine-Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Sabah Nisar
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Ajaz A. Bhat
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Khalid Adnan Fakhro
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,College of Health and Life Sciences, Hamad Bin Khalifa University, P.O. Box 34110, Doha, Qatar,Department of Genetic Medicine, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar,Human Genetics Department, Laboratory of Genomic Medicine-Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar
| | - Ammira S. Alshabeeb Akil
- Department of Human Genetics-Precision Medicine in Diabetes Prevention, Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Human Genetics Department, Laboratory of Genomic Medicine-Precision Medicine Program, Sidra Medicine, P.O. Box 26999, Doha, Qatar,Department of Physiology and Biophysics, Weill Cornell Medical College, P.O. Box 24144, Doha, Qatar,Correspondence to: Precision Medicine of Diabetes, Obesity and Cancer Research Program, Human Genetics Department, Sidra Medicine, PO Box 26999, Doha, Qatar.
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5
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Hong X, Nie H, Deng J, Liang S, Chen L, Li J, Gong S, Wang G, Zuo W, Hou F, Zhang F. WT1 + glomerular parietal epithelial progenitors promote renal proximal tubule regeneration after severe acute kidney injury. Theranostics 2023; 13:1311-1324. [PMID: 36923529 PMCID: PMC10008742 DOI: 10.7150/thno.79326] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 02/07/2023] [Indexed: 03/14/2023] Open
Abstract
Rationale: Mammalian renal proximal tubules can partially regenerate after acute kidney injury (AKI). However, cells participating in the renal proximal tubule regeneration remain to be elucidated. Wilms' tumor 1 (WT1) expresses in a subtype of glomeruli parietal epithelial cells (PECs) in adult kidneys, it remains unclear whether these WT1+ PECs play a role in renal regeneration/repair after AKI. Methods: Ischemia-reperfusion injury (IRI) mouse model was used to investigate the expression pattern of WT1 in the kidney after severe AKI. Conditional deletion of WT1 gene mice were generated using Pax8CreERT2 and WT1fl/fl mice to examine the function of WT1. Then, genetic cell lineage tracing and single-cell RNA sequencing were performed to illustrate that WT1+ PECs develop into WT1+ proximal tubular epithelial cells (PTECs). Furthermore, in vitro clonogenicity, direct differentiation analysis and in vivo transplantation were used to reveal the stem cell-like properties of these WT1+ PECs. Results: The expression of WT1 protein in PECs and PTECs was increased after severe AKI. Conditional deletion of WT1 gene in PTECs and PECs aggravated renal tubular injury after severe AKI. WT1+ PECs develop into WT1+ PTECs via the transient scattered tubular cell stage, and these WT1+ PECs possess specific stem cell-like properties. Conclusions: We discovered a group of WT1+ PECs that promote renal proximal tubule regeneration/repair after severe AKI, and the expression of WT1 in PECs and PTECs is essential for renal proximal tubule regeneration after severe kidney injury.
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Affiliation(s)
- Xizhen Hong
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China.,Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, China.,Guangdong Provincial Key Laboratory of Renal Failure Research, Guangzhou, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, 510005 Guangzhou, China.,Division of Nephrology, Second Affiliated Hospital of Zhejiang University School of Medicine, No.88, Jiefang Road, Shangcheng District, Hangzhou, Zhejiang, 310009, China
| | - Hao Nie
- East Hospital, School of Medicine, Tongji University, Shanghai 200120, China.,Kiangnan Stem Cell Institute, Zhejiang 311300, China
| | - Juan Deng
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China
| | - Shiting Liang
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China
| | - Liting Chen
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China
| | - Jing Li
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China
| | - Siqiao Gong
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China
| | - Guobao Wang
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China.,Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, China
| | - Wei Zuo
- East Hospital, School of Medicine, Tongji University, Shanghai 200120, China.,Kiangnan Stem Cell Institute, Zhejiang 311300, China
| | - Fanfan Hou
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China.,Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, China.,Guangdong Provincial Key Laboratory of Renal Failure Research, Guangzhou, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, 510005 Guangzhou, China
| | - Fujian Zhang
- Division of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, China.,State Key Laboratory of Organ Failure Research, Southern Medical University, Guangzhou, China.,National Clinical Research Center of Kidney Diseases, Nanfang Hospital, Guangzhou, China.,Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, China.,Guangdong Provincial Key Laboratory of Renal Failure Research, Guangzhou, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, 510005 Guangzhou, China
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6
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Cao Y, Lin JH, Hammes HP, Zhang C. Cellular phenotypic transitions in diabetic nephropathy: An update. Front Pharmacol 2022; 13:1038073. [PMID: 36408221 PMCID: PMC9666367 DOI: 10.3389/fphar.2022.1038073] [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: 09/06/2022] [Accepted: 10/17/2022] [Indexed: 11/23/2022] Open
Abstract
Diabetic nephropathy (DN) is a major cause of morbidity and mortality in diabetes and is the most common cause of end stage renal disease (ESRD). Renal fibrosis is the final pathological change in DN. It is widely believed that cellular phenotypic switching is the cause of renal fibrosis in diabetic nephropathy. Several types of kidney cells undergo activation and differentiation and become reprogrammed to express markers of mesenchymal cells or podocyte-like cells. However, the development of targeted therapy for DN has not yet been identified. Here, we discussed the pathophysiologic changes of DN and delineated the possible origins that contribute to myofibroblasts and podocytes through phenotypic transitions. We also highlight the molecular signaling pathways involved in the phenotypic transition, which would provide valuable information for the activation of phenotypic switching and designing effective therapies for DN.
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Affiliation(s)
- Yiling Cao
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ji-Hong Lin
- 5th Medical Department, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Hans-Peter Hammes
- 5th Medical Department, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,*Correspondence: Chun Zhang,
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7
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Yamamoto K, Okabe M, Tanaka K, Yokoo T, Pastan I, Araoka T, Osafune K, Udagawa T, Koizumi M, Matsusaka T. Podocytes are lost from glomeruli before completing apoptosis. Am J Physiol Renal Physiol 2022; 323:F515-F526. [PMID: 36049065 PMCID: PMC9602714 DOI: 10.1152/ajprenal.00080.2022] [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: 04/08/2022] [Revised: 08/05/2022] [Accepted: 08/23/2022] [Indexed: 12/14/2022] Open
Abstract
Although apoptosis of podocytes has been widely reported in in vitro studies, it has been less frequently and less definitively documented in in vivo situations. To investigate this discrepancy, we analyzed the dying process of podocytes in vitro and in vivo using LMB2, a human (h)CD25-directed immunotoxin. LMB2 induced cell death within 2 days in 56.8 ± 13.6% of cultured podocytes expressing hCD25 in a caspase-3, Bak1, and Bax-dependent manner. LMB2 induced typical apoptotic features, including TUNEL staining and fragmented nuclei without lactate dehydrogenase leakage. In vivo, LMB2 effectively eliminated hCD25-expressing podocytes in NEP25 mice. Podocytes injured by LMB2 were occasionally stained for cleaved caspase-3 and cleaved lamin A but never for TUNEL. Urinary sediment contained TUNEL-positive podocytes. To examine the effect of glomerular filtration, we performed unilateral ureteral obstruction in NEP25 mice treated with LMB2 1 day before euthanasia. In the obstructed kidney, glomeruli contained significantly more cleaved lamin A-positive podocytes than those in the contralateral kidney (50.1 ± 5.4% vs. 29.3 ± 4.1%, P < 0.001). To further examine the dying process without glomerular filtration, we treated kidney organoids generated from nephron progenitor cells of NEP25 mice with LMB2. Podocytes showed TUNEL staining and nuclear fragmentation. These results indicate that on activation of apoptotic caspases, podocytes are detached and lost in the urine before nuclear fragmentation and that the physical force of glomerular filtration facilitates detachment. This phenomenon may be the reason why definitive apoptosis is not observed in podocytes in vivo.NEW & NOTEWORTHY This report clarifies why morphologically definitive apoptosis is not observed in podocytes in vivo. When caspase-3 is activated in podocytes, these cells are immediately detached from the glomerulus and lost in the urine before DNA fragmentation occurs. Detachment is facilitated by glomerular filtration. This phenomenon explains why podocytes in vivo rarely show TUNEL staining and never apoptotic bodies.
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Affiliation(s)
- Kazuyoshi Yamamoto
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Department of Basic Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Masahiro Okabe
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
- Department of Basic Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Keiko Tanaka
- Department of Basic Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Takashi Yokoo
- Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan
| | - Ira Pastan
- Laboratory of Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Toshikazu Araoka
- Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Kenji Osafune
- Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Tomohiro Udagawa
- Department of Basic Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Masahiro Koizumi
- Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan
| | - Taiji Matsusaka
- Department of Basic Medicine, Tokai University School of Medicine, Isehara, Japan
- Institute of Medical Science, Tokai University School of Medicine, Isehara, Japan
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8
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Epigenetic Modulation of Gremlin-1/NOTCH Pathway in Experimental Crescentic Immune-Mediated Glomerulonephritis. Pharmaceuticals (Basel) 2022; 15:ph15020121. [PMID: 35215234 PMCID: PMC8876310 DOI: 10.3390/ph15020121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 12/20/2022] Open
Abstract
Crescentic glomerulonephritis is a devastating autoimmune disease that without early and properly treatment may rapidly progress to end-stage renal disease and death. Current immunosuppressive treatment provides limited efficacy and an important burden of adverse events. Epigenetic drugs are a source of novel therapeutic tools. Among them, bromodomain and extraterminal domain (BET) inhibitors (iBETs) block the interaction between bromodomains and acetylated proteins, including histones and transcription factors. iBETs have demonstrated protective effects on malignancy, inflammatory disorders and experimental kidney disease. Recently, Gremlin-1 was proposed as a urinary biomarker of disease progression in human anti-neutrophil cytoplasmic antibody (ANCA)-associated crescentic glomerulonephritis. We have now evaluated whether iBETs could regulate Gremlin-1 in experimental anti-glomerular basement membrane nephritis induced by nephrotoxic serum (NTS) in mice, a model resembling human crescentic glomerulonephritis. In NTS-injected mice, the iBET JQ1 inhibited renal Gremlin-1 overexpression and diminished glomerular damage, restoring podocyte numbers. Chromatin immunoprecipitation assay demonstrated BRD4 enrichment of the Grem-1 gene promoter in injured kidneys, consistent with Gremlin-1 epigenetic regulation. Moreover, JQ1 blocked BRD4 binding and inhibited Grem-1 gene transcription. The beneficial effect of iBETs was also mediated by modulation of NOTCH pathway. JQ1 inhibited the gene expression of the NOTCH effectors Hes-1 and Hey-1 in NTS-injured kidneys. Our results further support the role for epigenetic drugs, such as iBETs, in the treatment of rapidly progressive crescentic glomerulonephritis.
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9
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Anderson E, Aldridge M, Turner R, Harraway J, McManus S, Stewart A, Borzi P, Trnka P, Burke J, Coman D. WT1 complete gonadal dysgenesis with membranoproliferative glomerulonephritis: case series and literature review. Pediatr Nephrol 2022; 37:2369-2374. [PMID: 35211794 PMCID: PMC9395477 DOI: 10.1007/s00467-022-05421-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/03/2021] [Accepted: 12/06/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Intronic WT1 mutations are usually causative of Frasier syndrome with focal segmental glomerulosclerosis as the characteristic nephropathy. Membranoproliferative glomerulonephritis is not commonly associated with disorders of sex development but has been recently identified as a WT1-associated nephropathy, but usually in cases of exonic mutations in either isolated Wilms tumor or Denys-Drash syndrome. METHODS The clinical and genetic data from 3 individuals are reported. RESULTS This report describes the kidney manifestations in 3 individuals from 2 unrelated families with Frasier syndrome intronic WT1 mutations, noting that 2 of the 3 individuals have histologically confirmed membranoproliferative glomerulonephritis. CONCLUSIONS These case reports support expansion of the clinical spectrum of the kidney phenotypes associated with Frasier syndrome providing evidence of an association between WT1 mutation and an immune complex-related membranoproliferative glomerulonephritis. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- Erin Anderson
- Queensland Fertility Group, Virtus Genetics, Brisbane, Australia
| | - Melanie Aldridge
- Department of Nephrology, The Queensland Children’s Hospital, Brisbane, Australia
| | - Ross Turner
- Monash IVF, The Wesley Hospital, Brisbane, Australia
| | - James Harraway
- Mater Pathology, The Mater Hospital, Brisbane, Australia
| | - Sam McManus
- Mater Pathology, The Mater Hospital, Brisbane, Australia
| | - Anna Stewart
- Department of Anatomical Pathology, The Royal Brisbane and Women’s Hospital, Brisbane, Australia
| | - Peter Borzi
- Department of Paediatric Surgery and Urology, The Queensland Children’s Hospital, Brisbane, Australia ,Department of Paediatrics, The Wesley Hospital, Brisbane, Australia ,The School of Medicine, The University of Queensland, Brisbane, Australia
| | - Peter Trnka
- Department of Nephrology, The Queensland Children’s Hospital, Brisbane, Australia ,The School of Medicine, The University of Queensland, Brisbane, Australia
| | - John Burke
- Department of Nephrology, The Queensland Children’s Hospital, Brisbane, Australia ,The School of Medicine, The University of Queensland, Brisbane, Australia
| | - David Coman
- Queensland Fertility Group, Virtus Genetics, Brisbane, Australia. .,Department of Paediatrics, The Wesley Hospital, Brisbane, Australia. .,The School of Medicine, The University of Queensland, Brisbane, Australia. .,Department of Metabolic Medicine, The Queensland Children's Hospital, 501 Stanley Street, South Brisbane, QLD, 4101, Australia. .,The School of Medicine, Griffith University, Gold Coast, Australia.
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10
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Hu Y, Liu S, Liu W, Zhang Z, Liu Y, Sun D, Zhang M, Fang J. Bioinformatics analysis of genes related to iron death in diabetic nephropathy through network and pathway levels based approaches. PLoS One 2021; 16:e0259436. [PMID: 34735495 PMCID: PMC8568295 DOI: 10.1371/journal.pone.0259436] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/20/2021] [Indexed: 12/16/2022] Open
Abstract
Diabetic nephropathy is one of the common microvascular complications of diabetes. Iron death is a recently reported way of cell death. To explore the effects of iron death on diabetic nephropathy, iron death score of diabetic nephropathy was analyzed based on the network and pathway levels. Furthermore, markers related to iron death were screened. Using RNA-seq data of diabetic nephropathy, samples were clustered uniformly and the disease was classified. Differentially expressed gene analysis was conducted on the typed disease samples, and the WGCNA algorithm was used to obtain key modules. String database was used to perform protein interaction analysis on key module genes for the selection of Hub genes. Moreover, principal component analysis method was applied to get transcription factors and non-coding genes, which interact with the Hub gene. All samples can be divided into two categories and principal component analysis shows that the two categories are significantly different. Hub genes (FPR3, C3AR1, CD14, ITGB2, RAC2 and ITGAM) related to iron death in diabetic nephropathy were obtained through gene expression differential analysis between different subtypes. Non-coding genes that interact with Hub genes, including hsa-miR-572, hsa-miR-29a-3p, hsa-miR-29b-3p, hsa-miR-208a-3p, hsa-miR-153-3p and hsa-miR-29c-3p, may be related to diabetic nephropathy. Transcription factors HIF1α, KLF4, KLF5, RUNX1, SP1, VDR and WT1 may be related to diabetic nephropathy. The above factors and Hub genes are collectively involved in the occurrence and development of diabetic nephropathy, which can be further studied in the future. Moreover, these factors and genes may be potential target for therapeutic drugs.
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Affiliation(s)
- Yaling Hu
- Shanxi Medical University, Taiyuan, Shanxi, China
- Department of Nephrology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Shuang Liu
- Department of Urology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Wenyuan Liu
- Department of Nephrology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ziyuan Zhang
- Department of Nephrology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yuxiang Liu
- Shanxi Medical University, Taiyuan, Shanxi, China
| | - Dalin Sun
- Department of Nephrology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Mingyu Zhang
- Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jingai Fang
- Department of Nephrology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- * E-mail:
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11
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Ni L, Yuan C, Wu X. The recruitment mechanisms and potential therapeutic targets of podocytes from parietal epithelial cells. J Transl Med 2021; 19:441. [PMID: 34674704 PMCID: PMC8529729 DOI: 10.1186/s12967-021-03101-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 10/01/2021] [Indexed: 01/02/2023] Open
Abstract
Podocytes are differentiated postmitotic cells which cannot be replaced after podocyte injury. The mechanism of podocyte repopulation after injury has aroused wide concern. Parietal epithelial cells (PECs) are heterogeneous and only a specific subpopulation of PECs has the capacity to replace podocytes. Major progress has been achieved in recent years regarding the role and function of a subset of PECs which could transdifferentiate toward podocytes. Additionally, several factors, such as Notch, Wnt/ß-catenin, Wilms’ tumor-1, miR-193a and growth arrest-specific protein 1, have been shown to be involved in these processes. Finally, PECs serve as a potential therapeutic target in the conditions of podocyte loss. In this review, we discuss the latest observations and concepts about the recruitment of podocytes from PECs in glomerular diseases as well as newly identified mechanisms and the most recent treatments for this process.
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Affiliation(s)
- Lihua Ni
- Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, People's Republic of China
| | - Cheng Yuan
- Department of Gynecological Oncology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, People's Republic of China.
| | - Xiaoyan Wu
- Department of Nephrology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, People's Republic of China.
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12
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EP300/CBP is crucial for cAMP-PKA pathway to alleviate podocyte dedifferentiation via targeting Notch3 signaling. Exp Cell Res 2021; 407:112825. [PMID: 34506759 DOI: 10.1016/j.yexcr.2021.112825] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 08/24/2021] [Accepted: 09/05/2021] [Indexed: 11/20/2022]
Abstract
Podocyte injury is the hallmark of proteinuric glomerular diseases. Notch3 is neo-activated simultaneously in damaged podocytes and podocyte's progenitor cells of FSGS, indicating a unique role of Notch3. We previously showed that activation of cAMP-PKA pathway alleviated podocyte injury possibly via inhibiting Notch3 expression. However, the mechanisms are unknown. In the present study, Notch3 signaling was significantly activated in ADR-induced podocytes in vitro and in PAN nephrosis rats and patients with idiopathic FSGS in vivo, concomitantly with podocyte dedifferentiation. In cultured podocytes, pCPT-cAMP, a selective cAMP-PKA activator, dramatically blocked ADR-induced activation of Notch3 signaling as well as inhibition of cAMP-PKA pathway, thus alleviating the decreased cell viability and podocyte dedifferentiation. Bioinformatics analysis revealed EP300/CBP, a transcriptional co-activator, as a central hub for the crosstalk between these two signaling pathways. Additionally, CREB/KLF15 in cAMP-PKA pathway competed with RBP-J the major transcriptional factor of Notch3 signaling for binding to EP300/CBP. EP300/CBP siRNA significantly inhibited these two signaling transduction pathways and disrupted the interactions between the above major transcriptional factors. These data indicate a crucial role of EP300/CBP in regulating the crosstalk between cAMP-PKA pathway and Notch3 signaling and modulating the phenotypic change of podocytes, and enrich the reno-protective mechanisms of cAMP-PKA pathway.
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13
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Lu Z, Zhu X, Ye Y, Fu H, Mao J. PP2A protects podocytes against Adriamycin-induced injury and epithelial-to-mesenchymal transition via suppressing JIP4/p38-MAPK pathway. Cytotechnology 2021; 73:697-713. [PMID: 34629746 DOI: 10.1007/s10616-021-00484-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 06/21/2021] [Indexed: 02/06/2023] Open
Abstract
Protein phosphatase 2A (PP2A) is one of the major protein serine/threonine phosphatases (PPPs) with regulatory effects on several cellular processes, but its role and function in Adriamycin (ADR)-treated podocytes injury needs to be further explored. Mice podocytes were treated with ADR and PP2A inhibitor (okadaic acid, OA). After transfection, cell apoptosis was detected by flow cytometry. Expressions of podocytes injury-, apoptosis- and epithelial-to-mesenchymal transition (EMT)- and JNK-interacting protein 4/p38-Mitogen-Activated Protein Kinase (JIP4/p38-MAPK) pathway-related factors were measured using quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot as needed. Interaction between PP2A and JIP4/MAPK pathway was confirmed using co-immunoprecipitation (Co-Ip) assay. In podocytes, ADR inhibited PP2A, Nephrin and Wilms' tumor (WT) 1 expressions yet upregulated apoptosis and Desmin expression, and suppressing PP2A expressionenhanced the effects. PP2A overexpression reversed the effects of ADR on PP2A and podocyte injury-related factors expressions and apoptosis of podocytes. JIP4 was the candidate gene interacting with both PP2A and p38-MAPK pathway, and PP2A overexpression alleviated the effects of ADR on p38-MAPK pathway-related factors expressions. Additionally, in ADR-treated podocytes, PP2A suppression enhanced the effects of ADR, yet silencing of JIP4 reversed the effects of PP2A suppression on regulating p38-MAPK pathway-, apoptosis- and EMT-related factors expressions and apoptosis, with upregulations of B-cell lymphoma-2 (Bcl-2) and E-cadherin and down-regulations of Bcl-2 associated protein X (Bax), cleaved (C)-casapse-3, N-cadherin, Vimentin and Snail. PP2A protects ADR-treated podocytes against injury and EMT by suppressing JIP4/p38-MAPK pathway, showing their interaction in podocytes.
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Affiliation(s)
- Zhihong Lu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Xiujuan Zhu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Yuhong Ye
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Haidong Fu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Jianhua Mao
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
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14
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Luo J, Jiang J, Huang H, Jiang F, Xu Z, Zhou Z, Zhu H. C-peptide ameliorates high glucose-induced podocyte dysfunction through the regulation of the Notch and TGF-β signaling pathways. Peptides 2021; 142:170557. [PMID: 33901627 DOI: 10.1016/j.peptides.2021.170557] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 04/15/2021] [Accepted: 04/16/2021] [Indexed: 12/25/2022]
Abstract
The podocyte is one of the main components of the glomerular filtration barrier in the kidney, and its injury may contribute to proteinuria, glomerulosclerosis and eventually kidney failure. C-peptide, a cleavage product of proinsulin, shows therapeutic potential for treating diabetic nephropathy (DN). The aim of this study was to investigate the effect of C-peptide on high glucose-induced podocyte dysfunction. In the present study, we found that the protective effects of islet transplantation were superior to simple insulin therapy for the treatment of DN in streptozotocin (STZ)-treated rats. And such superiority may due to the function of C-peptide secreted at the implanted site. Based on this background, we determined that the application of C-peptide significantly prevented high glucose-induced podocyte injury by increasing the expression of nephrin and synaptopodin. Meanwhile, C-peptide suppressed high glucose-induced epithelial-mesenchymal transition (EMT) and renal fibrosis via decreasing the expression of snail, vimentin, α-smooth muscle actin (α-SMA) and connective tissue growth factor (CTGF). Moreover, the Notch and transforming growth factor-β (TGF-β) signaling pathways were activated by high glucose, and treatment with C-peptide down-regulated the expression of the Notch signaling molecules Notch 1 and Jagged 1 and the TGF-β signaling molecule TGF-β1. These findings suggested that C-peptide might serve as a novel treatment method for DN and podocyte dysfunction.
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Affiliation(s)
- Jiao Luo
- Department of Laboratory Medicine, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Jiahong Jiang
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Hongjian Huang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Feifei Jiang
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Zeru Xu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Zijun Zhou
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Hong Zhu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China.
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15
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Wang D, Zhao T, Zhao Y, Yin Y, Huang Y, Cheng Z, Wang B, Liu S, Pan M, Sun D, Wang Z, Zhu G. PPARγ Mediates the Anti-Epithelial-Mesenchymal Transition Effects of FGF1 ΔHBS in Chronic Kidney Diseases via Inhibition of TGF-β1/SMAD3 Signaling. Front Pharmacol 2021; 12:690535. [PMID: 34149434 PMCID: PMC8209477 DOI: 10.3389/fphar.2021.690535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Accepted: 05/21/2021] [Indexed: 02/06/2023] Open
Abstract
Podocytes are essential components of the glomerular basement membrane. Epithelial-mesenchymal-transition (EMT) in podocytes results in proteinuria. Fibroblast growth factor 1 (FGF1) protects renal function against diabetic nephropathy (DN). In the present study, we showed that treatment with an FGF1 variant with decreased mitogenic potency (FGF1ΔHBS) inhibited podocyte EMT, depletion, renal fibrosis, and preserved renal function in two nephropathy models. Mechanistic studies revealed that the inhibitory effects of FGF1ΔHBS podocyte EMT were mediated by decreased expression of transforming growth factor β1 via upregulation of PPARγ. FGF1ΔHBS enhanced the interaction between PPARγ and SMAD3 and suppressed SMAD3 nuclei translocation. We found that the anti-EMT activities of FGF1ΔHBS were independent of glucose-lowering effects. These findings expand the potential uses of FGF1ΔHBS in the treatment of diseases associated with EMT.
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Affiliation(s)
- Dezhong Wang
- Institute of Life Sciences and Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Wenzhou University, Wenzhou, China.,The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Tianyang Zhao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Yushuo Zhao
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yuan Yin
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yuli Huang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zizhao Cheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Beibei Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Sidan Liu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Minling Pan
- Institute of Life Sciences and Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Wenzhou University, Wenzhou, China
| | - Difei Sun
- Institute of Life Sciences and Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Wenzhou University, Wenzhou, China
| | - Zengshou Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guanghui Zhu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
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16
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Yang J, Zhang D, Motojima M, Kume T, Hou Q, Pan Y, Duan A, Zhang M, Jiang S, Hou J, Shi J, Qin Z, Liu Z. Super-Enhancer-Associated Transcription Factors Maintain Transcriptional Regulation in Mature Podocytes. J Am Soc Nephrol 2021; 32:1323-1337. [PMID: 33771836 PMCID: PMC8259645 DOI: 10.1681/asn.2020081177] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 01/30/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Transcriptional programs control cell fate, and identifying their components is critical for understanding diseases caused by cell lesion, such as podocytopathy. Although many transcription factors (TFs) are necessary for cell-state maintenance in glomeruli, their roles in transcriptional regulation are not well understood. METHODS The distribution of H3K27ac histones in human glomerulus cells was analyzed to identify superenhancer-associated TFs, and ChIP-seq and transcriptomics were performed to elucidate the regulatory roles of the TFs. Transgenic animal models of disease were further investigated to confirm the roles of specific TFs in podocyte maintenance. RESULTS Superenhancer distribution revealed a group of potential TFs in core regulatory circuits in human glomerulus cells, including FOXC1/2, WT1, and LMX1B. Integration of transcriptome and cistrome data of FOXC1/2 in mice resolved transcriptional regulation in podocyte maintenance. FOXC1/2 regulated differentiation-associated transcription in mature podocytes. In both humans and animal models, mature podocyte injury was accompanied by deregulation of FOXC1/2 expression, and FOXC1/2 overexpression could protect podocytes in zebrafish. CONCLUSIONS FOXC1/2 maintain podocyte differentiation through transcriptional stabilization. The genome-wide chromatin resources support further investigation of TFs' regulatory roles in glomeruli transcription programs.
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Affiliation(s)
- Jingping Yang
- Medical School of Nanjing University, Nanjing, China,National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Difei Zhang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Masaru Motojima
- Department of Clinical Pharmacology, Tokai University School of Medicine, Isehara, Japan
| | - Tsutomu Kume
- Feinberg Cardiovascular Research Institute, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Qing Hou
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yu Pan
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Aiping Duan
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Mingchao Zhang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Song Jiang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jinhua Hou
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Jingsong Shi
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
| | - Zhaohui Qin
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Zhihong Liu
- Medical School of Nanjing University, Nanjing, China,National Clinical Research Center of Kidney Diseases, Jinling Hospital, Medical School of Nanjing University, Nanjing, China
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17
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Wang F, Cai J, Wang J, He M, Mao J, Zhu K, Zhao M, Guan Z, Li L, Jin H, Shu Q. A novel WT1 gene mutation in a chinese girl with denys-drash syndrome. J Clin Lab Anal 2021; 35:e23769. [PMID: 33942367 PMCID: PMC8128316 DOI: 10.1002/jcla.23769] [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: 11/10/2020] [Revised: 03/03/2021] [Accepted: 03/13/2021] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVE Denys-Drash syndrome (DDS) is defined by the triad of Wilms tumor, nephrotic syndrome, and/or ambiguous genitalia. Genetic testing may help identify new gene mutation sites and play an important role in clinical decision-making. METHODS We present a patient with an XY karyotype and female appearance, nephropathy, and Wilms tumor in the right kidney. Genomic DNA was extracted from peripheral blood cells according to standard protocols. "Next-generation" sequencing (NGS) was performed to identify novel variants. The variant was analyzed with Mutation Taster, and its function was explored by a cell growth inhibition assay. RESULTS We found the first case of Denys-Drash syndrome with the uncommon missense mutation (c.1420C>T, p.His474 Tyr) in the WT1 gene. In silico analysis, the variant was predicted "disease-causing" by Mutation Taster. The mutated variant showed a weaker effect in inhibiting tumor cells than wild-type WT1. CONCLUSIONS The uncommon missense mutation (c.1420C>T, p.His474 Tyr) in the WT1 gene may be a crucial marker in DDS.
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Affiliation(s)
- Faliang Wang
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiabin Cai
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Jinhu Wang
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Min He
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Junqing Mao
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Kun Zhu
- Department of Pathology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Manli Zhao
- Department of Pathology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhonghai Guan
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Linjie Li
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
| | - Hongchuan Jin
- Laboratory of Cancer Biology, Key Lab of Biotherapy in Zhejiang, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qiang Shu
- Department of Surgical Oncology, Children's Hospital, National Clinical Research Center for Child Health, Zhejiang University School of Medicine, Hangzhou, China
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18
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Tang R, Meng T, Lin W, Shen C, Ooi JD, Eggenhuizen PJ, Jin P, Ding X, Chen J, Tang Y, Xiao Z, Ao X, Peng W, Zhou Q, Xiao P, Zhong Y, Xiao X. A Partial Picture of the Single-Cell Transcriptomics of Human IgA Nephropathy. Front Immunol 2021; 12:645988. [PMID: 33936064 PMCID: PMC8085501 DOI: 10.3389/fimmu.2021.645988] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 03/19/2021] [Indexed: 01/11/2023] Open
Abstract
The molecular mechanisms underlying renal damage of IgA nephropathy (IgAN) remain incompletely defined. Here, single-cell RNA sequencing (scRNA-seq) was applied to kidney biopsies from IgAN and control subjects to define the transcriptomic landscape at single-cell resolution. We presented a comprehensive scRNA-seq analysis of human renal biopsies from IgAN. We showed for the first time that IgAN mesangial cells displayed increased expression of several novel genes including MALAT1, GADD45B, SOX4, and EDIL3, which were related to cell proliferation and matrix accumulation. The overexpressed genes in tubule cells of IgAN were mainly enriched in inflammatory pathways including TNF signaling, IL-17 signaling, and NOD-like receptor signaling. Furthermore, we compared the results of 4 IgAN patients with the published scRNA-Seq data of healthy kidney tissues of three human donors in order to further validate the findings in our study. The results also verified that the overexpressed genes in tubule cells from IgAN patients were mainly enriched in inflammatory pathways including TNF signaling, IL-17 signaling, and NOD-like receptor signaling. The receptor-ligand crosstalk analysis revealed potential interactions between mesangial cells and other cells in IgAN. IgAN patients with overt proteinuria displayed elevated genes participating in several signaling pathways compared with microproteinuria group. It needs to be mentioned that based on number of mesangial cells and other kidney cells analyzed in this study, the results of our study are preliminary and needs to be confirmed on larger number of cells from larger number of patients and controls in future studies. Therefore, these results offer new insight into pathogenesis and identify new therapeutic targets for IgAN.
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Affiliation(s)
- Rong Tang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Ting Meng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Wei Lin
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Chanjuan Shen
- Department of Hematology, the Affiliated Zhuzhou Hospital Xiangya Medical College, Central South University, Zhuzhou, China
| | - Joshua D Ooi
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China.,Centre for Inflammatory Diseases, Monash University, Clayton, VIC, Australia
| | - Peter J Eggenhuizen
- Centre for Inflammatory Diseases, Monash University, Clayton, VIC, Australia
| | - Peng Jin
- Department of Organ Transplantation, Xiangya Hospital, Central South University, Changsha, China
| | - Xiang Ding
- Department of Organ Transplantation, Xiangya Hospital, Central South University, Changsha, China
| | - Jinbiao Chen
- Department of Medical Records & Information, Xiangya Hospital, Central South University, Changsha, China
| | - Yangshuo Tang
- Department of Ultrasound, Xiangya Hospital, Central South University, Changsha, China
| | - Zhou Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiang Ao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Weisheng Peng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Qiaoling Zhou
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Ping Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Yong Zhong
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiangcheng Xiao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
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19
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Text Mining Gene Selection to Understand Pathological Phenotype Using Biological Big Data. Bioinformatics 2021. [DOI: 10.36255/exonpublications.bioinformatics.2021.ch1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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20
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Mann N, Mzoughi S, Schneider R, Kühl SJ, Schanze D, Klämbt V, Lovric S, Mao Y, Shi S, Tan W, Kühl M, Onuchic-Whitford AC, Treimer E, Kitzler TM, Kause F, Schumann S, Nakayama M, Buerger F, Shril S, van der Ven AT, Majmundar AJ, Holton KM, Kolb A, Braun DA, Rao J, Jobst-Schwan T, Mildenberger E, Lennert T, Kuechler A, Wieczorek D, Gross O, Ermisch-Omran B, Werberger A, Skalej M, Janecke AR, Soliman NA, Mane SM, Lifton RP, Kadlec J, Guccione E, Schmeisser MJ, Zenker M, Hildebrandt F. Mutations in PRDM15 Are a Novel Cause of Galloway-Mowat Syndrome. J Am Soc Nephrol 2021; 32:580-596. [PMID: 33593823 PMCID: PMC7920168 DOI: 10.1681/asn.2020040490] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 11/18/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Galloway-Mowat syndrome (GAMOS) is characterized by neurodevelopmental defects and a progressive nephropathy, which typically manifests as steroid-resistant nephrotic syndrome. The prognosis of GAMOS is poor, and the majority of children progress to renal failure. The discovery of monogenic causes of GAMOS has uncovered molecular pathways involved in the pathogenesis of disease. METHODS Homozygosity mapping, whole-exome sequencing, and linkage analysis were used to identify mutations in four families with a GAMOS-like phenotype, and high-throughput PCR technology was applied to 91 individuals with GAMOS and 816 individuals with isolated nephrotic syndrome. In vitro and in vivo studies determined the functional significance of the mutations identified. RESULTS Three biallelic variants of the transcriptional regulator PRDM15 were detected in six families with proteinuric kidney disease. Four families with a variant in the protein's zinc-finger (ZNF) domain have additional GAMOS-like features, including brain anomalies, cardiac defects, and skeletal defects. All variants destabilize the PRDM15 protein, and the ZNF variant additionally interferes with transcriptional activation. Morpholino oligonucleotide-mediated knockdown of Prdm15 in Xenopus embryos disrupted pronephric development. Human wild-type PRDM15 RNA rescued the disruption, but the three PRDM15 variants did not. Finally, CRISPR-mediated knockout of PRDM15 in human podocytes led to dysregulation of several renal developmental genes. CONCLUSIONS Variants in PRDM15 can cause either isolated nephrotic syndrome or a GAMOS-type syndrome on an allelic basis. PRDM15 regulates multiple developmental kidney genes, and is likely to play an essential role in renal development in humans.
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Affiliation(s)
- Nina Mann
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Slim Mzoughi
- Methyltransferases in Development and Disease Group, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ronen Schneider
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Susanne J Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Denny Schanze
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
| | - Verena Klämbt
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Svjetlana Lovric
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Youying Mao
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Shasha Shi
- Grenoble Alpes University, National Center for Scientific Research (CNRS), French Alternative Energies and Atomic Energy Commission (CEA), Institute of Structural Biology, Grenoble, France
| | - Weizhen Tan
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Michael Kühl
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Ana C Onuchic-Whitford
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
- Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Ernestine Treimer
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Thomas M Kitzler
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Franziska Kause
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Sven Schumann
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Makiko Nakayama
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Florian Buerger
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Shirlee Shril
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Amelie T van der Ven
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Amar J Majmundar
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Amy Kolb
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Daniela A Braun
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jia Rao
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Tilman Jobst-Schwan
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Eva Mildenberger
- Division of Neonatology, University Medical Center, Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Thomas Lennert
- Department of Pediatrics, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Alma Kuechler
- Institute of Human Genetics, University of Duisburg-Essen, Essen, Germany
| | - Dagmar Wieczorek
- Institute of Human Genetics, Faculty of Medicine, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Oliver Gross
- Clinic of Nephrology and Rheumatology, University Medical Center Goettingen, University of Goettingen, Goettingen, Germany
| | - Beate Ermisch-Omran
- Department of Pediatric Nephrology, University Children's Hospital, Münster, Germany
| | - Anja Werberger
- Institute of Biochemistry and Molecular Biology, Ulm University, Ulm, Germany
| | - Martin Skalej
- Institute of Neuroradiology, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Andreas R Janecke
- Department of Pediatrics I, Medical University of Innsbruck, Innsbruck, Austria
| | - Neveen A Soliman
- Department of Pediatrics, Center of Pediatric Nephrology and Transplantation, Kasr Al Ainy School of Medicine, Cairo University, Cairo, Egypt
- The Egyption Group for Orphan Renal Diseases (EGORD), Cairo, Egypt
| | - Shrikant M Mane
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut
| | - Richard P Lifton
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, New York
| | - Jan Kadlec
- Grenoble Alpes University, National Center for Scientific Research (CNRS), French Alternative Energies and Atomic Energy Commission (CEA), Institute of Structural Biology, Grenoble, France
| | - Ernesto Guccione
- Methyltransferases in Development and Disease Group, Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Michael J Schmeisser
- Institute for Microscopic Anatomy and Neurobiology, University Medical Center, Johannes Gutenberg University of Mainz, Mainz, Germany
- Focus Program Translational Neurosciences, University Medical Center, Johannes Gutenberg University of Mainz, Mainz, Germany
| | - Martin Zenker
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
| | - Friedhelm Hildebrandt
- Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
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Wu D, Ke Y, Xiao R, Liu J, Li Q, Wang Y. Long non-coding RNA GClnc1 knockdown suppresses progression of epithelial ovarian cancer by recruiting FOXC2 to disrupt the NOTCH1/NF-κB/Snail pathway. Exp Cell Res 2020; 399:112422. [PMID: 33338479 DOI: 10.1016/j.yexcr.2020.112422] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Epithelial ovarian cancer (EOC) is a highly fatal gynecological cancer. A long noncoding RNA (lncRNA) gastric cancer-associated lncRNA1 (GClnc1) has been revealed to play critical roles in metastasis. Therefore, the present study aims to explore the correlation between GClnc1 and the metastasis and progression of EOC. METHODS First, 57 paired EOC and paracancerous tissues were collected to detect GClnc1 expression by RT-qPCR. Subsequently, OVC1 and SKOV3 cells with GClnc1 silencing/overexpression were developed to detect changes in cell activity, apoptosis, migration and invasion abilities. Then, the subcellular localization of GClnc1 was detected by nuclear/cytoplasmic fractionation, ISH and FISH assays. The binding relationships between GClnc1 and forkhead box protein C2 (FOXC2), and between FOXC2 and NOTCH1 were predicted and verified. RESULTS GClnc1 was significantly overexpressed in EOC tissues, and knockdown of GClnc1 inhibited cell viability and promoted apoptosis. Moreover, GClnc1 in the nucleus bound to the transcription factor FOXC2, thereby activating the transcription of NOTCH1. NOTCH1 overexpression enhanced the proliferation and epithelial-mesenchymal transition of SKOV3 and OVC1 cells. Moreover, NOTCH1 activated the NF-κB/Snail signaling. Finally, in vivo experiments demonstrated that GClnc1 knockdown suppressed the growth and metastasis of SKOV3 and OVC1 cells in vivo. CONCLUSIONS GClnc1 promoted NOTCH1 transcription by recruiting FOXC2, thereby activating the NF-κB/Snail signaling and promoting EOC cell growth and metastasis.
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Affiliation(s)
- Dandan Wu
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Yumin Ke
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Rongrong Xiao
- Department of Obstetrics and Gynecology, Quanzhou Strait Hospital, Quanzhou, Fujian, 362018, PR China
| | - Jia Liu
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Qingli Li
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China
| | - Yiwen Wang
- Department of Obstetrics and Gynecology, The First Hospital of Quanzhou Affiliated to Fujian Medical University, Quanzhou, 362000, Fujian, PR China.
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22
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Dou Y, Shang Y, Shen Y, Qu J, Liu C, Cao J. Baicalin alleviates adriamycin-induced focal segmental glomerulosclerosis and proteinuria by inhibiting the Notch1-Snail axis mediated podocyte EMT. Life Sci 2020; 257:118010. [DOI: 10.1016/j.lfs.2020.118010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 06/16/2020] [Accepted: 06/22/2020] [Indexed: 01/02/2023]
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23
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Jo HA, Hyeon JS, Yang SH, Jung Y, Ha H, Jeong CW, Kwak C, Kim Y, Lee H, Lee JP, Joo KW, Lim CS, Kim YS, Hwang GS, Kim DK. Fumarate modulates phospholipase A2 receptor autoimmunity-induced podocyte injury in membranous nephropathy. Kidney Int 2020; 99:443-455. [PMID: 32712166 DOI: 10.1016/j.kint.2020.06.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 05/19/2020] [Accepted: 06/04/2020] [Indexed: 10/23/2022]
Abstract
Downstream mechanisms that lead to podocyte injury following phospholipase A2 receptor (PLA2R) autoimmunity remain elusive. To help define this we compared urinary metabolomic profiles of patients with PLA2R-associated membranous nephropathy (MN) at the time of kidney biopsy with those of patients with minimal change disease (MCD) and to healthy individuals. Among the metabolites differentially expressed in patients with PLA2R-associated MN compared to healthy individuals, fumarate was the only significant differentially expressed metabolite in PLA2R-associated MN compared to MCD [fold-difference vs. healthy controls and vs. MCD: 1.76 and 1.60, respectively]. High urinary fumarate levels could predict the composite outcome of PLA2R-associated MN. Fumarate hydratase, which hydrolyzes fumarate, colocalized with podocalyxin, and its expression was lower in glomerular sections from patients with PLA2R-associated MN than in those from healthy individuals, patients with non-PLA2R-associated MN or MCD. Podocytes stimulated with IgG purified from serum with a high anti-PLA2R titer (MN-IgG) decreased expression of fumarate hydratase and increased fumarate levels. These changes were coupled to alterations in the expression of molecules involved in the phenotypic profile of podocytes (WT1, ZO-1, Snail, and fibronectin), an increase in albumin flux across the podocyte layer and the production of reactive oxygen species in podocytes. However, overexpression of fumarate hydratase ameliorated these alterations. Furthermore, knockdown of fumarate hydratase exhibited synergistic effects with MN-IgG treatment. Thus, fumarate may promote changes in the phenotypic profiles of podocytes after the development of PLA2R autoimmunity. These findings suggest that fumarate could serve as a potential target for the treatment of PLA2R-associated MN.
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Affiliation(s)
- Hyung Ah Jo
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea; Department of Internal Medicine, Inje University Ilsan Paik Hospital, Ilsan, Korea
| | - Jin Seong Hyeon
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul, Korea; Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
| | - Seung Hee Yang
- Kidney Research Institute, Seoul National University, Seoul, Korea
| | - Youngae Jung
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul, Korea
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Korea
| | - Chang Wook Jeong
- Department of Urology, Seoul National University Hospital, Seoul, Korea
| | - Cheol Kwak
- Department of Urology, Seoul National University Hospital, Seoul, Korea
| | - Yaerim Kim
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Korea
| | - Hajeong Lee
- Kidney Research Institute, Seoul National University, Seoul, Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Jung Pyo Lee
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea; Kidney Research Institute, Seoul National University, Seoul, Korea; Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Kwon Wook Joo
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea; Kidney Research Institute, Seoul National University, Seoul, Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Chun Soo Lim
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea; Kidney Research Institute, Seoul National University, Seoul, Korea; Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Korea
| | - Yon Su Kim
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea; Kidney Research Institute, Seoul National University, Seoul, Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul, Korea; Department of Chemistry and Nano Science, Ewha Womans University, Seoul, Korea.
| | - Dong Ki Kim
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea; Kidney Research Institute, Seoul National University, Seoul, Korea; Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea.
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24
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Gobetto MN, Mendes Garrido Abregú F, Caniffi C, Veiras L, Elesgaray R, Gironacci M, Tomat AL, Arranz C. Fetal and postnatal zinc restriction: sex differences in the renal renin-angiotensin system of newborn and adult Wistar rats. J Nutr Biochem 2020; 81:108385. [PMID: 32388253 DOI: 10.1016/j.jnutbio.2020.108385] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 03/05/2020] [Accepted: 03/26/2020] [Indexed: 02/07/2023]
Abstract
This study aimed to evaluate renal morphology and the renal renin-angiotensin system in 6- and 81-day-old male and female offspring exposed to zinc deficiency during fetal life, lactation and/or postnatal growth. Female Wistar rats were fed low- or control zinc diets from pregnancy to offspring weaning. Afterwards, offspring were fed a low- or a control zinc diet until 81 days of life. In 6- and/or 81-day-old offspring, we evaluated systolic blood pressure, renal morphology, renal angiotensin II and angiotensin 1-7 concentration, and AT1 and AT2 receptors and angiotensin-converting enzymes protein and/or mRNA expression. At 6 days, zinc-deficient male offspring showed decreased glomerular filtration areas, remodelling of renal arteries, greater number of renal apoptotic cells, increased levels of Angiotensin II, higher Angiotensin II/Angiotensin 1-7 ratio and increased angiotensin-converting enzyme 1, AT1 and AT2 receptors mRNA and/or protein expression. Exacerbation of the renal Ang II/AT1 receptor axis and remodelling of renal arteries were also observed in adult zinc-deficient male offspring. An adequate zinc diet during post-weaning life did not improve all the alterations induced by zinc deficiency in early stages of development. Female offspring would appear to be less sensitive to zinc deficiency with no increase in blood pressure or significant alterations in renal morphology and the renin-angiotensin system. Moderate zinc deficiency during critical periods of prenatal and postnatal development leads to early morphological renal alterations and to permanent and long-term changes in the renal renin-angiotensin system that could predispose to renal and cardiovascular diseases in adult life.
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Affiliation(s)
- María Natalia Gobetto
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina
| | - Facundo Mendes Garrido Abregú
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina
| | - Carolina Caniffi
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina
| | - Luciana Veiras
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; Department of Biomedical Sciences, Cedars-Sinai Medical Center, Davis Research Bldg., Rm. 2007.110N, George Burns Rd., Los Angeles, CA 90048
| | - Rosana Elesgaray
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina
| | - Mariela Gironacci
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Junín 956, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Junín 956, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina
| | - Analía Lorena Tomat
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina.
| | - Cristina Arranz
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Fisiología, Junín 956, Piso 7, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina; CONICET, Universidad de Buenos Aires, Instituto de Química y Metabolismo del Fármaco (IQUIMEFA), Junín 956, Piso 2, CP 1113, Ciudad Autónoma de Buenos Aires, Argentina
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25
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Mukherjee M, Fogarty E, Janga M, Surendran K. Notch Signaling in Kidney Development, Maintenance, and Disease. Biomolecules 2019; 9:E692. [PMID: 31690016 PMCID: PMC6920979 DOI: 10.3390/biom9110692] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 10/31/2019] [Accepted: 11/02/2019] [Indexed: 02/06/2023] Open
Abstract
Kidney development involves formation of nephrons intricately aligned with the vasculature and connected to a branched network of collecting ducts. Notch signaling plays multiple roles during kidney development involving the formation of nephrons composed of diverse epithelial cell types arranged into tubular segments, all the while maintaining a nephron progenitor niche. Here, we review the roles of Notch signaling identified from rodent kidney development and injury studies, while discussing human kidney diseases associated with aberrant Notch signaling. We also review Notch signaling requirement in maintenance of mature kidney epithelial cell states and speculate that Notch activity regulation mediates certain renal physiologic adaptations.
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Affiliation(s)
- Malini Mukherjee
- Pediatrics and Rare Diseases Group, Sanford Research, 2301 East 60th Street North, Sioux Falls, SD 57104, USA.
| | - Eric Fogarty
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, Vermillion, SD 57069, USA.
| | - Madhusudhana Janga
- Pediatrics and Rare Diseases Group, Sanford Research, 2301 East 60th Street North, Sioux Falls, SD 57104, USA.
| | - Kameswaran Surendran
- Pediatrics and Rare Diseases Group, Sanford Research, 2301 East 60th Street North, Sioux Falls, SD 57104, USA.
- Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Sioux Falls, SD 57105, USA.
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26
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Korzelius J, Azami S, Ronnen-Oron T, Koch P, Baldauf M, Meier E, Rodriguez-Fernandez IA, Groth M, Sousa-Victor P, Jasper H. The WT1-like transcription factor Klumpfuss maintains lineage commitment of enterocyte progenitors in the Drosophila intestine. Nat Commun 2019; 10:4123. [PMID: 31511511 PMCID: PMC6739418 DOI: 10.1038/s41467-019-12003-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 08/09/2019] [Indexed: 01/01/2023] Open
Abstract
In adult epithelial stem cell lineages, the precise differentiation of daughter cells is critical to maintain tissue homeostasis. Notch signaling controls the choice between absorptive and entero-endocrine cell differentiation in both the mammalian small intestine and the Drosophila midgut, yet how Notch promotes lineage restriction remains unclear. Here, we describe a role for the transcription factor Klumpfuss (Klu) in restricting the fate of enteroblasts (EBs) in the Drosophila intestine. Klu is induced in Notch-positive EBs and its activity restricts cell fate towards the enterocyte (EC) lineage. Transcriptomics and DamID profiling show that Klu suppresses enteroendocrine (EE) fate by repressing the action of the proneural gene Scute, which is essential for EE differentiation. Loss of Klu results in differentiation of EBs into EE cells. Our findings provide mechanistic insight into how lineage commitment in progenitor cell differentiation can be ensured downstream of initial specification cues. Notch signaling mediates intestinal enteroblast specification in Drosophila but the molecular mechanism as to how this is regulated is unclear. Here, the authors show that the transcription factor Klumpfuss ensures enteroblast commitment through repression of enteroendocrine cell fate downstream of Notch.
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Affiliation(s)
- Jerome Korzelius
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany. .,Max-Planck-Institute for Biology of Aging, Cologne, Germany.
| | - Sina Azami
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany.,Max-Planck-Institute for Biology of Aging, Cologne, Germany
| | - Tal Ronnen-Oron
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA, 94945-1400, USA
| | - Philipp Koch
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany
| | - Maik Baldauf
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany
| | - Elke Meier
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany
| | | | - Marco Groth
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany
| | - Pedro Sousa-Victor
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA, 94945-1400, USA
| | - Heinrich Jasper
- Leibniz Institute on Aging-Fritz Lipmann Institute (FLI), Jena, Germany. .,Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, CA, 94945-1400, USA. .,Immunology Discovery, Genentech, Inc., 1 DNA Way, South San Francisco, CA, 94080, USA.
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27
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Cassis P, Zoja C, Perico L, Remuzzi G. A preclinical overview of emerging therapeutic targets for glomerular diseases. Expert Opin Ther Targets 2019; 23:593-606. [PMID: 31150308 DOI: 10.1080/14728222.2019.1626827] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Introduction: Animal models have provided significant insights into the mechanisms responsible for the development of glomerular lesions and proteinuria; they have also helped to identify molecules that control the podocyte function as suitable target-specific therapeutics. Areas covered: We discuss putative therapeutic targets for proteinuric glomerular diseases. An exhaustive search for eligible studies was performed in PubMed/MEDLINE. Most of the selected reports were published in the last decade, but we did not exclude older relevant milestone publications. We consider the molecules that regulate podocyte cytoskeletal dynamics and the transcription factors that regulate the expression of slit-diaphragm proteins. There is a focus on SGLT2 and sirtuins which have recently emerged as mediators of podocyte injury and repair. We also examine paracrine signallings involved in the cross-talk of injured podocytes with the neighbouring glomerular endothelial cells and parietal epithelial cells. Expert opinion: There is a need to discover novel therapeutic moleecules with renoprotective effects for those patients with glomerular diseases who do not respond completely to standard therapy. Emerging strategies targeting components of the podocyte cytoskeleton or signallings that regulate cellular communication within the glomerulus are promising avenues for treating glomerular diseases.
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Affiliation(s)
- Paola Cassis
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy
| | - Carlamaria Zoja
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy
| | - Luca Perico
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy
| | - Giuseppe Remuzzi
- a Department of Molecular Medicine , Istituto di Ricerche Farmacologiche Mario Negri IRCCS,Centro Anna Maria Astori, Science and Technology Park Kilometro Rosso , Bergamo , Italy.,b 'L. Sacco' Department of Biomedical and Clinical Sciences , University of Milan , Milan , Italy
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Knockdown of TLR4 attenuates high glucose-induced podocyte injury via the NALP3/ASC/Caspase-1 signaling pathway. Biomed Pharmacother 2018; 107:1393-1401. [DOI: 10.1016/j.biopha.2018.08.134] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/24/2018] [Accepted: 08/25/2018] [Indexed: 01/20/2023] Open
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