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Burke GW, Chandar J, Sageshima J, Ortigosa-Goggins M, Amarapurkar P, Mitrofanova A, Defreitas MJ, Katsoufis CP, Seeherunvong W, Centeno A, Pagan J, Mendez-Castaner LA, Mattiazzi AD, Kupin WL, Guerra G, Chen LJ, Morsi M, Figueiro JMG, Vianna R, Abitbol CL, Roth D, Fornoni A, Ruiz P, Ciancio G, Garin EH. Benefit of B7-1 staining and abatacept for treatment-resistant post-transplant focal segmental glomerulosclerosis in a predominantly pediatric cohort: time for a reappraisal. Pediatr Nephrol 2023; 38:145-159. [PMID: 35507150 PMCID: PMC9747833 DOI: 10.1007/s00467-022-05549-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 02/28/2022] [Accepted: 03/15/2022] [Indexed: 01/10/2023]
Abstract
BACKGROUND Primary FSGS manifests with nephrotic syndrome and may recur following KT. Failure to respond to conventional therapy after recurrence results in poor outcomes. Evaluation of podocyte B7-1 expression and treatment with abatacept (a B7-1 antagonist) has shown promise but remains controversial. METHODS From 2012 to 2020, twelve patients developed post-KT FSGS with nephrotic range proteinuria, failed conventional therapy, and were treated with abatacept. Nine/twelve (< 21 years old) experienced recurrent FSGS; three adults developed de novo FSGS, occurring from immediately, up to 8 years after KT. KT biopsies were stained for B7-1. RESULTS Nine KTRs (75%) responded to abatacept. Seven of nine KTRs were B7-1 positive and responded with improvement/resolution of proteinuria. Two patients with rFSGS without biopsies resolved proteinuria after abatacept. Pre-treatment UPCR was 27.0 ± 20.4 (median 13, range 8-56); follow-up UPCR was 0.8 ± 1.3 (median 0.2, range 0.07-3.9, p < 0.004). Two patients who were B7-1 negative on multiple KT biopsies did not respond to abatacept and lost graft function. One patient developed proteinuria while receiving belatacept, stained B7-1 positive, but did not respond to abatacept. CONCLUSIONS Podocyte B7-1 staining in biopsies of KTRs with post-transplant FSGS identifies a subset of patients who may benefit from abatacept. A higher resolution version of the Graphical abstract is available as Supplementary information.
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Affiliation(s)
- George W. Burke
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, 1801 NW 9th Ave, Highland Professional Building, Miami, FL 33136 USA
| | - Jayanthi Chandar
- Division of Pediatric Kidney Transplantation, Department of Pediatrics, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Junichiro Sageshima
- Division of Transplant Surgery, Department of Surgery, University of California Davis School of Medicine, Sacramento, CA 95817 USA
| | - Mariella Ortigosa-Goggins
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Pooja Amarapurkar
- Division of Nephrology, Department of Medicine, Emory University School of Medicine, Atlanta, GA 30309 USA
| | - Alla Mitrofanova
- Research, Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Marissa J. Defreitas
- Division of Pediatric Nephrology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Chryso P. Katsoufis
- Division of Pediatric Nephrology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Wacharee Seeherunvong
- Division of Pediatric Nephrology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Alexandra Centeno
- Transplant Clinical Pharmacy Services, Miami Transplant Institute, Jackson Memorial Hospital, Miami, FL 33136 USA
| | - Javier Pagan
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Lumen A. Mendez-Castaner
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Adela D. Mattiazzi
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Warren L. Kupin
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Giselle Guerra
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Linda J. Chen
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, 1801 NW 9th Ave, Highland Professional Building, Miami, FL 33136 USA
| | - Mahmoud Morsi
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, 1801 NW 9th Ave, Highland Professional Building, Miami, FL 33136 USA
| | - Jose M. G. Figueiro
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, 1801 NW 9th Ave, Highland Professional Building, Miami, FL 33136 USA
| | - Rodrigo Vianna
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, 1801 NW 9th Ave, Highland Professional Building, Miami, FL 33136 USA ,Division of Liver and GI Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Carolyn L. Abitbol
- Division of Pediatric Nephrology, Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - David Roth
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, and the Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Alessia Fornoni
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Phillip Ruiz
- Transplant Pathology, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, Miami, FL 33136 USA
| | - Gaetano Ciancio
- Division of Kidney-Pancreas Transplantation, Department of Surgery, Miami Transplant Institute, University of Miami Miller School of Medicine, 1801 NW 9th Ave, Highland Professional Building, Miami, FL 33136 USA
| | - Eduardo H. Garin
- Division of Nephrology, Department of Pediatrics, University of Florida School of Medicine, Gainesville, FL 32610 USA
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B7-1 mediates podocyte injury and glomerulosclerosis through communication with Hsp90ab1-LRP5-β-catenin pathway. Cell Death Differ 2022; 29:2399-2416. [PMID: 35710882 PMCID: PMC9750974 DOI: 10.1038/s41418-022-01026-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 02/08/2023] Open
Abstract
Podocyte injury is a hallmark of glomerular diseases; however, the underlying mechanisms remain unclear. B7-1 is increased in injured podocytes, but its intrinsic role is controversial. The clinical data here revealed the intimate correlation of urinary B7-1 with severity of glomerular injury. Through transcriptomic and biological assays in B7-1 transgenic and adriamycin nephropathy models, we identified B7-1 is a key mediator in podocyte injury and glomerulosclerosis through a series of signal transmission to β-catenin. Using LC-MS/MS, Hsp90ab1, a conserved molecular chaperone, was distinguished to be an anchor for transmitting signals from B7-1 to β-catenin. Molecular docking and subsequent mutant analysis further identified the residue K69 in the N terminal domain of Hsp90ab1 was the key binding site for B7-1 to activate LRP5/β-catenin pathway. The interaction and biological functions of B7-1-Hsp90ab1-LRP5 complex were further demonstrated in vitro and in vivo. We also found B7-1 is a novel downstream target of β-catenin. Our results indicate an intercrossed network of B7-1, which collectively induces podocyte injury and glomerulosclerosis. Our study provides an important clue to improve the therapeutic strategies to target B7-1.
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Huang Y, Cheng J, Zhou Y, Zhang Y, Zhou S, Li Q, Peng L, Wang M, Song W, Wu G. Sulfuretted hydrogen ameliorates high dose glucose-induced podocyte apoptosis via orchestrating AMPK/mTOR cascade-mediated anti-apoptotic effects. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1586. [PMID: 34790792 PMCID: PMC8576736 DOI: 10.21037/atm-21-5152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/20/2021] [Indexed: 12/04/2022]
Abstract
Background Podocytes play a pivotal role in the glomerular filtration barrier and contribute to proteinuria and glomerulosclerosis through abnormal apoptosis. Longitudinal studies have indicated the protective properties of hydrogen sulfide (H2S) against neuronal cell apoptosis, whereas the biological function and the underlying molecular mechanism on glucose-induced podocyte apoptosis are largely unknown. Methods Herein, we conducted multifaceted biological analyses to verify the potential function of H2S in glucose-induced podocyte apoptosis by examining apoptotic proteins and markers (e.g., caspase 3, Hoechst) and antioxidative effects [e.g., reactive oxygen species (ROS), lipid peroxidation, superoxide dismutase (SOD), catalase (CAT)]. Then, we took advantage of transcriptome sequencing and biological analyses to further determine the potential influence of H2S as well as the accompanying molecular mechanism. Results In this study, we found that glucose-induced podocyte apoptosis could be largely rescued by H2S via antioxidative responses, which was further confirmed by transcriptome sequencing and bioinformatics analyses. According to apoptotic signaling analysis, the over-activated AMPK/mTOR signaling cascade in glucose-treated podocytes was effectively restrained. Conclusions For the first time, we indicated the protective effect and mechanism of H2S in podocytes by restricting glucose-induced apoptosis and suppressing the abnormally activated AMPK/mTOR signaling cascade. Our findings provide new references for podocyte apoptosis-associated diseases and also indicate the potential of H2S administration in clinical trials.
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Affiliation(s)
- Yong Huang
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Jie Cheng
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yehua Zhou
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Yanhui Zhang
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Shuhui Zhou
- Department of Nephrology, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Qingzhen Li
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Lin Peng
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Maohong Wang
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Weiguo Song
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Guoqing Wu
- Department of Nephrology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, China
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Shensu IV prevents glomerular podocyte injury in nephrotic rats via promoting lncRNA H19/DIRAS3-mediated autophagy. Biosci Rep 2021; 41:228425. [PMID: 33881140 PMCID: PMC8112846 DOI: 10.1042/bsr20203362] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 04/09/2021] [Accepted: 04/15/2021] [Indexed: 12/14/2022] Open
Abstract
Shensu IV is a Chinese prescription well-known for its function in treating chronic kidney diseases. However, the potential mechanisms underlying how Shensu IV exerts its effects remain unclear. In the present study, we investigated the effects of Shensu IV on glomerular podocyte injury in nephrotic rats and puromycin-induced injury in cultured podocytes, and assessed the associated molecular mechanisms. Liquid chromatography-mass spectrometry (LC-MS) results showed that the main components of Shensu IV were l-Carnitine, P-lysoPC (LPC) 16:0, Coumaroyl tyramine, Tetramethylpyrazine, LPC 18:1, Choline, (S,S)-Butane-2,3-diol, and Scopoletin. We further found that nephrotic rats displayed pathological alterations in kidney tissues and ultrastructural changes in glomerular podocytes; however, these effects were reversed with Shensu IV treatment. Compared with the control, the numbers of autophagosomes were markedly reduced in the model group, but not in the Shensu IV treatment group. Furthermore, the expression of p62 was significantly higher in the model group than in the controls, whereas the LC3-II/I ratio was significantly lower; however, these changes were not observed when Shensu IV was administered. The protective effects of Shensu IV were further confirmed in podocytes displaying puromycin-induced injury. Compared with control group, the expression of long non-coding RNA (lncRNA) H19, mTOR, p-mTOR, and p62 was significantly increased in the puromycin group, whereas that of distinct subgroup of the RAS family member 3 (DIRAS3) was significantly decreased, as was the LC3-II/I ratio. The opposite results were obtained for both shH19- and Shensu IV-treated cells. Collectively, our data demonstrated that Shensu IV can prevent glomerular podocyte injury in nephrotic rats and puromycin-treated podocytes, likely via promoting lncRNA H19/DIRAS3-regulated autophagy.
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Keisuke S, Kohei M, Takuji E, Tomoki M, Yuichi M, Rina O, Tsukasa T, Mitsuru O. Role of cathepsin L in idiopathic nephrotic syndrome in children. Med Hypotheses 2020; 141:109718. [PMID: 32289645 DOI: 10.1016/j.mehy.2020.109718] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 04/06/2020] [Indexed: 01/12/2023]
Abstract
Nephrotic syndrome (NS) is one of the most common glomerular diseases in children. Glomerular podocyte dysfunction can result in proteinuria, the presence of a large amount of protein in the urine. Podocytes are unique epithelial cells that divide into 3 separate structural and functional segments: a cell body, major processes, and foot processes. Since synaptopodin, dynamin, and actin are crucial components of the podocyte cytoskeleton, degradation of these proteins is associated with cytoskeleton instability, resulting in the development of proteinuria. Cathepsin L (CatL), a cysteine proteinase, plays a crucial role in various renal diseases. CatL expression is elevated in rats with puromycin aminonucleoside-induced nephropathy, which is used as a model of minimal change NS. In CatL-deficient mice, which do not develop proteinuria, dynamin is retained through the escape of CatL-mediated decomposition, resulting in no changes in the filtration barrier of podocytes. However, there is limited information on the roles of CatL in NS. Based on these data, CatL might play an important role in the development of proteinuria. Furthermore, identifying the functions of CatL may contribute to a better understanding of the pathogenesis of childhood-onset NS. We hypothesize that high levels of CatL can lead to cytoskeletal instability of podocytes, resulting in proteinuria in childhood-onset NS.
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Affiliation(s)
- Sugimoto Keisuke
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan.
| | - Miyazaki Kohei
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Enya Takuji
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Miyazawa Tomoki
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Morimoto Yuichi
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Oshima Rina
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Takemura Tsukasa
- Department of Pediatrics, Kushimoto Municipality Hospital, Wakayama, Japan
| | - Okada Mitsuru
- Department of Pediatrics, Kindai University, Faculty of Medicine, Osaka, Japan
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Eroglu FK, Orhan D, İnözü M, Duzova A, Gulhan B, Ozaltin F, Topaloglu R. CD80 expression and infiltrating regulatory T cells in idiopathic nephrotic syndrome of childhood. Pediatr Int 2019; 61:1250-1256. [PMID: 31513327 DOI: 10.1111/ped.14005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 07/05/2019] [Accepted: 09/06/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND CD80 (also known as B7-1) is a co-stimulatory molecule that is expressed in biopsies and also excreted in urine in patients with minimal change disease (MCD) and focal segmental glomerulosclerosis (FSGS). CD80 is inhibited by the cytotoxic T-lymphocyte-associated-antigen 4 (CTLA4), which is mainly expressed on regulatory T cells (Tregs). Ineffective circulating Treg response is involved in the pathogenesis of nephrotic syndrome. In this study, we evaluated CD80 expression and infiltrating Tregs in children with MCD and FSGS. METHODS Evaluation of CD80 expression and semi-quantitative evaluation of Tregs (FOXP3-positive CD4 T cells) were carried out in 31 kidney biopsies (12 MCD, 19 FSGS) with immunofluorescence and immunohistochemistry staining. RESULTS All MCD sections were stained negative; whereas six out of 19 FSGS sections (all from steroid-resistant (SR) patients), including one from a Wilms' tumor 1 (WT1) mutation-positive FSGS patient, stained positive for anti-CD80 goat antibody, and negative for anti-CD80 rabbit antibody. FSGS biopsy specimens had significantly higher FOXP3-positive cells/mm2 compared with MCD and control samples (P < 0.001). Biopsy samples from SR-FSGS patients (n = 12) with positive CD80 staining (n = 6) had significantly less Tregs (FOXP3-positive CD4 T cells) compared with CD80 (-) biopsies (n = 6; P = 0.004). CONCLUSION CD80 expression was not detected in the majority of the archival biopsy sections and the results were not consistent across the different antibodies. In the SR-FSGS sections, however, CD80-positive biopsies had decreased FOXP3-positive CD4 T cells, suggesting that a decreased anti-inflammatory milieu may be the cause of increased CD80 expression.
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Affiliation(s)
- Fehime Kara Eroglu
- Division of Pediatric Nephrology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Diclehan Orhan
- Department of Pathology, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Mihriban İnözü
- Division of Pediatric Nephrology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Ali Duzova
- Division of Pediatric Nephrology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Bora Gulhan
- Division of Pediatric Nephrology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Fatih Ozaltin
- Division of Pediatric Nephrology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
| | - Rezan Topaloglu
- Division of Pediatric Nephrology, Department of Pediatrics, Faculty of Medicine, Hacettepe University, Ankara, Turkey
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7
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Zhong F, Chen Z, Zhang L, Xie Y, Nair V, Ju W, Kretzler M, Nelson RG, Li Z, Chen H, Wang Y, Zhang A, Lee K, Liu Z, He JC. Tyro3 is a podocyte protective factor in glomerular disease. JCI Insight 2018; 3:123482. [PMID: 30429374 PMCID: PMC6302948 DOI: 10.1172/jci.insight.123482] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/11/2018] [Indexed: 01/05/2023] Open
Abstract
Our previous work demonstrated a protective role of protein S in early diabetic kidney disease (DKD). Protein S exerts antiinflammatory and antiapoptotic effects through the activation of TYRO3, AXL, and MER (TAM) receptors. Among the 3 TAM receptors, we showed that the biological effects of protein S were mediated largely by TYRO3 in diabetic kidneys. Our data now show that TYRO3 mRNA expression is highly enriched in human glomeruli and that TYRO3 protein is expressed in podocytes. Interestingly, glomerular TYRO3 mRNA expression increased in mild DKD but was suppressed in progressive DKD, as well as in focal segmental glomerulosclerosis (FSGS). Functionally, morpholino-mediated knockdown of tyro3 altered glomerular filtration barrier development in zebrafish larvae, and genetic ablation of Tyro3 in murine models of DKD and Adriamycin-induced nephropathy (ADRN) worsened albuminuria and glomerular injury. Conversely, the induction of TYRO3 overexpression specifically in podocytes significantly attenuated albuminuria and kidney injury in mice with DKD, ADRN, and HIV-associated nephropathy (HIVAN). Mechanistically, TYRO3 expression was suppressed by activation of TNF-α/NF-κB pathway, which may contribute to decreased TYRO3 expression in progressive DKD and FSGS, and TYRO3 signaling conferred antiapoptotic effects through the activation of AKT in podocytes. In conclusion, TYRO3 plays a critical role in maintaining normal podocyte function and may be a potential new drug target to treat glomerular diseases.
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Affiliation(s)
- Fang Zhong
- Department of Medicine/Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Zhaohong Chen
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Liwen Zhang
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - Yifan Xie
- Department of Medicine/Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Viji Nair
- Division of Nephrology, University of Michigan, Ann Arbor, Michigan, USA
| | - Wenjun Ju
- Division of Nephrology, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthias Kretzler
- Division of Nephrology, University of Michigan, Ann Arbor, Michigan, USA
| | - Robert G Nelson
- Chronic Kidney Disease Section, Phoenix Epidemiology and Clinical Research Branch, National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), NIH, Bethesda, Maryland, USA
| | - Zhengzhe Li
- Department of Medicine/Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Hongyu Chen
- Department of Nephrology, Hangzhou Hospital of Traditional Chinese Medicine, Zhejiang Chinese Medical University, China
| | - Yongjun Wang
- Department of Nephrology, Hangzhou Hospital of Traditional Chinese Medicine, Zhejiang Chinese Medical University, China
| | - Aihua Zhang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Kyung Lee
- Department of Medicine/Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Zhihong Liu
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, China
| | - John Cijiang He
- Department of Medicine/Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Renal Section, James J Peters Veterans Affair Medical Center, Bronx, New York, USA
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Novelli R, Benigni A, Remuzzi G. The role of B7-1 in proteinuria of glomerular origin. Nat Rev Nephrol 2018; 14:589-596. [DOI: 10.1038/s41581-018-0037-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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9
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Kino J, Tsuji S, Kitao T, Akagawa Y, Yamanouchi S, Kimata T, Kaneko K. Antiproteinuric effect of an endothelin-1 receptor antagonist in puromycin aminonucleoside-induced nephrosis in rat. Pediatr Res 2018; 83:1041-1048. [PMID: 29360807 DOI: 10.1038/pr.2018.11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 01/06/2018] [Indexed: 02/07/2023]
Abstract
BackgroundThe pathogenesis of idiopathic nephrotic syndrome (INS) remains unclear, although recent studies suggest endothelin 1 (ET-1) and CD80 of podocytes are involved. We investigated the potential of antagonist to ET-1 receptor type A (ETRA) as therapeutic agent through the suppression of CD80 in a rat model of INS.MethodsPuromycin aminonucleoside (PAN) was injected to Wister rats to induce proteinuria: some were treated with ETRA antagonist and others were treated with 0.5% methylcellulose. Blood and tissue samples were collected. Quantitative PCR was used to determine the expression of Toll-like receptor-3 (TLR-3), nuclear factor-κB (NF-κB), CD80, talin, ETRA, and ET-1 in the kidney. To confirm the level of CD80 protein expression, immunofluorescence staining and western blot analysis of the renal tissue were performed.ResultsAmount of proteinuria in the treatment group was significantly lower than the other groups. The same-day body weight, serum creatinine values, and blood pressure were not significantly different. ETRA antagonist restores podocyte foot process effacement as well as the aberrant expression of TLR-3, nuclear factor-κB (NF-κB), and CD80 in PAN-injured kidneys.ConclusionsThe ETRA antagonist may be promising drug for INS as it showed an antiproteinuric effect. Its action was considered to be through suppression of CD80 expression on podocytes.
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Affiliation(s)
- Jiro Kino
- Department of Pediatrics, Kansai Medical University, Osaka, Japan
| | - Shoji Tsuji
- Department of Pediatrics, Kansai Medical University, Osaka, Japan
| | - Tetsuya Kitao
- Department of Pediatrics, Kansai Medical University, Osaka, Japan
| | - Yuko Akagawa
- Department of Pediatrics, Kansai Medical University, Osaka, Japan
| | | | - Takahisa Kimata
- Department of Pediatrics, Kansai Medical University, Osaka, Japan
| | - Kazunari Kaneko
- Department of Pediatrics, Kansai Medical University, Osaka, Japan
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