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Yao Y, Wang X, Lin L, Zhang X, Wang Y. ROR2-Related Skeletal Dysplasia Reveals Disrupted Chondrocyte Polarity through Modulation of BMP/TGF-β Signaling. Aging Dis 2024; 15:282-294. [PMID: 37307827 PMCID: PMC10796094 DOI: 10.14336/ad.2023.0531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Accepted: 05/31/2023] [Indexed: 06/14/2023] Open
Abstract
Genetic studies have shown that Robinow syndrome (RS), a rare skeletal dysplasia, is caused by ROR2 mutation. However, the cell origin and molecular mechanisms underlying this disease remain elusive. We established a conditional knockout system by crossing Prx1cre and Osxcre with Ror2 flox/flox mice. and conducted histological and immunofluorescence analyses to investigate the phenotypes during skeletal development. In the Prx1cre line, we observed RS-like skeletal abnormities, including short stature and an arched skull. Additionally, we found inhibition of chondrocyte differentiation and proliferation. In the Osxcre line, loss of ROR2 in osteoblast lineage cells led to reduced osteoblast differentiation during both embryonic and postnatal stages. Furthermore, ROR2 mutant mice exhibited increased adipogenesis in the bone marrow compared to their littermate controls. To further explore the underlying mechanisms, bulk RNA-seq analysis of Prx1cre; Ror2 flox/flox embryos was performed, results revealed decreased BMP/TGF-β signaling. Immunofluorescence analysis further confirmed the decreased expression of p-smad1/5/8, accompanied by disrupted cell polarity in the developing growth plate. Pharmacological treatment using FK506 partially rescued the skeletal dysplasia and resulted in increased mineralization and osteoblast differentiation. By modeling the phenotype of RS in mice, our findings provide evidence for the involvement of mesenchymal progenitors as the cell origin and highlight the molecular mechanism of BMP/TGF-β signaling in skeletal dysplasia.
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Affiliation(s)
- Yichen Yao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China.
| | - Xin Wang
- Department of Medicine, Harvard Medical School, Boston, MA, USA.
- Jeff and Penny Vinik Center for Translational Immunology Research, Division of Allergy and Clinical Immunology, Brigham and Women’s Hospital, Boston, MA, USA.
| | - Lichieh Lin
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China.
| | - Xiaolei Zhang
- Department of Stomatology, the Eighth Affiliated Hospital, Sun Yat-sen University, Shen Zhen, Guangdong, China.
| | - Yan Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, China.
- Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, China.
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Ume AC, Wenegieme TY, Shelby JN, Paul-Onyia CDB, Waite AMJ, Kamau JK, Adams DN, Susuki K, Bennett ES, Ren H, Williams CR. Tacrolimus induces fibroblast-to-myofibroblast transition via a TGF-β-dependent mechanism to contribute to renal fibrosis. Am J Physiol Renal Physiol 2023; 324:F433-F445. [PMID: 36927118 PMCID: PMC10085566 DOI: 10.1152/ajprenal.00226.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 02/07/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Use of immunosuppressant calcineurin inhibitors (CNIs) is limited by irreversible kidney damage, hallmarked by renal fibrosis. CNIs directly damage many renal cell types. Given the diverse renal cell populations, additional targeted cell types and signaling mechanisms warrant further investigation. We hypothesized that fibroblasts contribute to CNI-induced renal fibrosis and propagate profibrotic effects via the transforming growth factor-β (TGF-β)/Smad signaling axis. To test this, kidney damage-resistant mice (C57BL/6) received tacrolimus (10 mg/kg) or vehicle for 21 days. Renal damage markers and signaling mediators were assessed. To investigate their role in renal damage, mouse renal fibroblasts were exposed to tacrolimus (1 nM) or vehicle for 24 h. Morphological and functional changes in addition to downstream signaling events were assessed. Tacrolimus-treated kidneys displayed evidence of renal fibrosis. Moreover, α-smooth muscle actin expression was significantly increased, suggesting the presence of fibroblast activation. TGF-β receptor activation and downstream Smad2/3 signaling were also upregulated. Consistent with in vivo findings, tacrolimus-treated renal fibroblasts displayed a phenotypic switch known as fibroblast-to-myofibroblast transition (FMT), as α-smooth muscle actin, actin stress fibers, cell motility, and collagen type IV expression were significantly increased. These findings were accompanied by concomitant induction of TGF-β signaling. Pharmacological inhibition of the downstream TGF-β effector Smad3 attenuated tacrolimus-induced phenotypic changes. Collectively, these findings suggest that 1) tacrolimus inhibits the calcineurin/nuclear factor of activated T cells axis while inducing TGF-β1 ligand secretion and receptor activation in renal fibroblasts; 2) aberrant TGF-β receptor activation stimulates Smad-mediated production of myofibroblast markers, notable features of FMT; and 3) FMT contributes to extracellular matrix expansion in tacrolimus-induced renal fibrosis. These results incorporate renal fibroblasts into the growing list of CNI-targeted cell types and identify renal FMT as a process mediated via a TGF-β-dependent mechanism.NEW & NOTEWORTHY Renal fibrosis, a detrimental feature of irreversible kidney damage, remains a sinister consequence of long-term calcineurin inhibitor (CNI) immunosuppressive therapy. Our study not only incorporates renal fibroblasts into the growing list of cell types negatively impacted by CNIs but also identifies renal fibroblast-to-myofibroblast transition as a process mediated via a TGF-β-dependent mechanism. This insight will direct future studies investigating the feasibility of inhibiting TGF-β signaling to maintain CNI-mediated immunosuppression while ultimately preserving kidney health.
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Affiliation(s)
- Adaku C Ume
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Tara Y Wenegieme
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Jennae N Shelby
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Chiagozie D B Paul-Onyia
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Aston M J Waite
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - John K Kamau
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Danielle N Adams
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Keiichiro Susuki
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Eric S Bennett
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Hongmei Ren
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
| | - Clintoria R Williams
- Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine and College of Science and Mathematics, Wright State University, Dayton, Ohio, United States
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Abstract
Bone morphogenetic proteins (BMPs) constitute the largest subdivision of the transforming growth factor (TGF)-β family of ligands and exert most of their effects through the canonical effectors Smad1, 5, and 8. Appropriate regulation of BMP signaling is critical for the development and homeostasis of numerous human organ systems. Aberrations in BMP pathways or their regulation are increasingly associated with diverse human pathologies, and there is an urgent and growing need to develop effective approaches to modulate BMP signaling in the clinic. In this review, we provide a wide perspective on diseases and/or conditions associated with dysregulated BMP signal transduction, outline the current strategies available to modulate BMP pathways, highlight emerging second-generation technologies, and postulate prospective avenues for future investigation.
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Affiliation(s)
- Jonathan W Lowery
- Division of Biomedical Science, Marian University College of Osteopathic Medicine, Indianapolis, Indiana 46222
| | - Vicki Rosen
- Department of Developmental Biology, Harvard School of Dental Medicine, Boston, Massachusetts 02115
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Wei L, Du Y, Jia L, Ma X, Chen Z, Lu J, Tian L, Duan Z, Dong F, Lv Z, Yao G, Fu R, Wang L. Therapeutic Effects of FK506 on IgA Nephropathy Rat. Kidney Blood Press Res 2017; 42:983-998. [PMID: 29179182 DOI: 10.1159/000485346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 11/16/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS FK506 is an immunosuppressive drug and a calcineurin inhibitor that has been widely used in kidney disease in recent years. FK506 shows a wide range of biological and pharmaceutical effects; however, the mechanism of its anti- proliferative effect has not been well elucidated. An IgA nephropathy (IgAN) model was used to generate a mesangial cell proliferation model. This study aims to examine the effect of FK506 on IgAN rats and the underlying mechanisms. METHODS Hematuria, proteinuria and renal function were measured. To observe the pathological conditions, we performed HE (hematoxylin - eosin) and PAS (periodic acid - schiff) staining. Transcription and protein expression levels were detected by qRT - PCR (quantitative real-time polymerase chain reaction) and Wb (western blotting). The location and semi-quantitative expression levels of TRPCs, CaN (Calcineurin) and α-SMA were examined by IHC (Immunohistochemical staining). RESULTS We found that FK506 could improve hematuria, proteinuria and renal function, especially in the HF (high-dose FK506) groups. Renal pathological changes were ameliorated in the treatment groups. FK506 could significantly decrease TRPCs, CaN, phosphorylation of ERK1/2 and α-SMA expression. CONCLUSION Taken together, these results suggest that the therapeutic effect of FK506 on IgAN might be partially associated with the down-regulated expression of TRPC channels, CaN and phosphorylation of ERK1/2.
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Affiliation(s)
- Linting Wei
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yan Du
- Department of Nephrology, the First Affiliated Hospital of Xi'an Medical University, Xi'an, China
| | - Lining Jia
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xiaotao Ma
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhao Chen
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiamei Lu
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lifang Tian
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Zhaoyang Duan
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Fengming Dong
- Department of Nephrology, Jiangsu Taizhou People's Hospital, Taizhou, China
| | - Zhian Lv
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Ganglian Yao
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Rongguo Fu
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Li Wang
- Department of Nephrology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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Aschauer C, Perco P, Heinzel A, Sunzenauer J, Oberbauer R. Positioning of Tacrolimus for the Treatment of Diabetic Nephropathy Based on Computational Network Analysis. PLoS One 2017; 12:e0169518. [PMID: 28060893 PMCID: PMC5217951 DOI: 10.1371/journal.pone.0169518] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 12/19/2016] [Indexed: 01/15/2023] Open
Abstract
Objective To evaluate tacrolimus as therapeutic option for diabetic nephropathy (DN) based on molecular profile and network-based molecular model comparisons. Materials and Methods We generated molecular models representing pathophysiological mechanisms of DN and tacrolimus mechanism of action (MoA) based on literature derived data and transcriptomics datasets. Shared enriched molecular pathways were identified based on both model datasets. A newly generated transcriptomics dataset studying the effect of tacrolimus on mesangial cells in vitro was added to identify mechanisms in DN pathophysiology. We searched for features in interference between the DN molecular model and the tacrolimus MoA molecular model already holding annotation evidence as diagnostic or prognostic biomarker in the context of DN. Results Thirty nine molecular features were shared between the DN molecular model, holding 252 molecular features and the tacrolimus MoA molecular model, holding 209 molecular features, with six additional molecular features affected by tacrolimus in mesangial cells. Significantly affected molecular pathways by both molecular model sets included cytokine-cytokine receptor interactions, adherens junctions, TGF-beta signaling, MAPK signaling, and calcium signaling. Molecular features involved in inflammation and immune response contributing to DN progression were significantly downregulated by tacrolimus (e.g. the tumor necrosis factor alpha (TNF), interleukin 4, or interleukin 10). On the other hand, pro-fibrotic stimuli being detrimental to renal function were induced by tacrolimus like the transforming growth factor beta 1 (TGFB1), endothelin 1 (EDN1), or type IV collagen alpha 1 (COL4A1). Conclusion Patients with DN and elevated TNF levels might benefit from tacrolimus treatment regarding maintaining GFR and reducing inflammation. TGFB1 and EDN1 are proposed as monitoring markers to assess degree of renal damage. Next to this stratification approach, the use of drug combinations consisting of tacrolimus in addition to ACE inhibitors, angiotensin receptor blockers, TGFB1- or EDN1-receptor antagonists might warrant further studies.
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Affiliation(s)
| | - Paul Perco
- Emergentec Biodevelopment GmbH, Vienna, Austria
- Department of Internal Medicine IV, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Judith Sunzenauer
- Department of Nephrology, Medical University of Vienna, Vienna, Austria
| | - Rainer Oberbauer
- Department of Nephrology, Medical University of Vienna, Vienna, Austria
- * E-mail:
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Kimsa M, Strzalka-Mrozik B, Kimsa-Dudek M, Kruszniewska-Rajs C, Gola J, Adamska J, Mazurek U. Transforming growth factor β-related genes in human retinal pigment epithelial cells after tacrolimus treatment. Pharmacol Rep 2016; 68:969-74. [DOI: 10.1016/j.pharep.2016.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 01/28/2023]
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Gallo S, Gili M, Lombardo G, Rossetti A, Rosso A, Dentelli P, Togliatto G, Deregibus MC, Taverna D, Camussi G, Brizzi MF. Stem Cell-Derived, microRNA-Carrying Extracellular Vesicles: A Novel Approach to Interfering with Mesangial Cell Collagen Production in a Hyperglycaemic Setting. PLoS One 2016; 11:e0162417. [PMID: 27611075 PMCID: PMC5017750 DOI: 10.1371/journal.pone.0162417] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 08/22/2016] [Indexed: 12/20/2022] Open
Abstract
Extracellular vesicles (EVs) that are derived from stem cells are proving to be promising therapeutic options. We herein investigate the therapeutic potential of EVs that have been derived from different stem cell sources, bone-marrow (MSC) and human liver (HLSC), on mesangial cells (MCs) exposed to hyperglycaemia. By expressing a dominant negative STAT5 construct (ΔNSTAT5) in HG-cultured MCs, we have demonstrated that miR-21 expression is under the control of STAT5, which translates into Transforming Growth Factor beta (TGFβ) expression and collagen production. A number of approaches have been used to show that both MSC- and HLSC-derived EVs protect MCs from HG-induced damage via the transfer of miR-222. This resulted in STAT5 down-regulation and a decrease in miR-21 content, TGFβ expression and matrix protein synthesis within MCs. Moreover, we demonstrate that changes in the balance between miR-21 and miR-100 in the recipient cell, which are caused by the transfer of EV cargo, further contribute to providing beneficial effects. Interestingly, these effects were only detected in HG-cultured cells. Finally, it was found that HG reduced the expression of the nuclear encoded mitochondrial electron transport chain (ETC) components, CoxIV. It is worth noting that EV administration can rescue CoxIV expression in HG-cultured MCs. These results thus demonstrate that both MSC- and HLSC-derived EVs transfer the machinery needed to preserve MCs from HG-mediated damage. This occurs via the horizontal transfer of functional miR-222 which directly interferes with damaging cues. Moreover, our data indicate that the release of EV cargo into recipient cells provides additional therapeutic advantages against harmful mitochondrial signals.
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Affiliation(s)
- Sara Gallo
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Maddalena Gili
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Giusy Lombardo
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Alberto Rossetti
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - Arturo Rosso
- Department of Medical Sciences, University of Turin, Turin, Italy
| | | | | | | | - Daniela Taverna
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - Giovanni Camussi
- Department of Medical Sciences, University of Turin, Turin, Italy
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YIANG GIOUTENG, CHEN JENNI, LIN PEISHIUAN, LIU HSIAOCHUN, CHEN SHUYING, WEI CHYOUWEI. Combined treatment with vitamin E and gefitinib has synergistic effects to inhibit TGF-β1-induced renal fibroblast proliferation. Mol Med Rep 2016; 13:5372-8. [DOI: 10.3892/mmr.2016.5155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2015] [Accepted: 04/07/2016] [Indexed: 11/06/2022] Open
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Lin Q, Wang L, Bai Y, Hu M, Mo J, He H, Lou A, Yang B, Zhao H, Guo Y, Wu Y, Wang L. RETRACTED ARTICLE: Effect of the co-culture of human bone marrow mesenchymal stromal cells with human umbilical vein endothelial cells in vitro. J Recept Signal Transduct Res 2015; 36:221-4. [DOI: 10.3109/10799893.2015.1075043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Huang J, Huang C, Luo Y, Liu S, Chen X. Role of MiR-30a in cardiomyocyte autophagy induced by Angiotensin II. J Renin Angiotensin Aldosterone Syst 2014; 16:1-5. [PMID: 25501305 DOI: 10.1177/1470320314562060] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 10/27/2014] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate whether MiR-30a regulates autophagy by regulating the Beclin-1 protein, which is the marker for autophagosomes during myocardial injury, when induced by angiotensin II (Ang II). METHODS We randomly assigned 20 rats into two equal groups: Control group and Ang II group. We detected the expression of MiR-30a by quantitative real-time polymerase chain reaction (RT-PCR), and we employed western blotting to detect the protein expression of Beclin-1. RESULTS In this study, we found that Ang II induced cardiomyocyte autophagy, together with down-regulation of MiR-30a and upregulation of the Beclin-1 protein. We also found that the Beclin-1 protein is regulated by MiR-30a, by transferring a MiR-30a mimic or AMO-204 into the cardiomyocytes. CONCLUSION These studies provided evidence that MiR-30a plays an important role in regulating autophagy through the Beclin-1 protein, during myocardial injury induced by Ang II.
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Affiliation(s)
- Jionghua Huang
- Department of Cardiology, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Chunlin Huang
- Department of Cardiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Yishan Luo
- Department of Cardiology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China
| | - Shiming Liu
- Department of Cardiology, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ximing Chen
- Department of Cardiology, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
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Wang H, Zhang S, Xu S, Zhang L. The efficacy and mechanism of dexmedetomidine in myocardial apoptosis via the renin–angiotensin–aldosterone system. J Renin Angiotensin Aldosterone Syst 2014; 16:1274-80. [PMID: 25172906 DOI: 10.1177/1470320314546941] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Huishu Wang
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, China
- Affiliated Union Hospital, Fujian Medical University, China
| | - Siduo Zhang
- Affiliated Union Hospital, Fujian Medical University, China
| | - Shiyuan Xu
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, China
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Dai Y, Yang H, Gao P, Liu WD. NPHS2 variation in Chinese southern infants with late steroid-resistant nephrotic syndrome. Ren Fail 2014; 36:1395-8. [PMID: 25112471 DOI: 10.3109/0886022x.2014.947515] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Abstract NPHS2 mutations are responsible for autosomal recessive familial steroid-resistant nephrotic syndrome (SRNS) with minor glomerular abnormalities or focal segmental glomerulosclerosis (FSGS), which is characterized by early childhood onset and rapid progression to chronic renal insufficiency. This gene mutation is also responsible for an adolescent onset form of autosomal recessive familial FSGS with heavy proteinuria. Many infants with late steroid-resistant nephrotic syndrome (late SRNS) are prone to an implicated clinical and therapeutic course. The etiopathogenesis and the long-term prognosis of late SRNS remain obscure. Considering the similar steroid resistance between late and initial SRNS, analysis of NPHS2 variation was performed in 70 sporadic Chinese infants with late SRNS and 70 controls in the present study to investigate the possible role of NPHS2 gene in late SRNS. The variation analysis revealed three polymorphisms (288C > T heterozygous in exon 2, 954T > C heterozygous and homozygous, and 1038A > G heterozygous in exon 8) in 22 out of 70 patients studied. In conclusion, NPHS2 gene mutations are not a major cause of chronic renal insufficiency caused by late SRNS in Chinese southern infants.
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Affiliation(s)
- Yiheng Dai
- Department of Neonatal, South Medical University Affiliated Maternal & Child Health Hospital of Foshan , Foshan, Guang Dong , China
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Huang L, You YS, Wu W. Role of CD2-associated protein in podocyte apoptosis and proteinuria induced by angiotensin II. Ren Fail 2014; 36:1328-32. [DOI: 10.3109/0886022x.2014.934177] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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