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Abousaad S, Ahmed F, Abouzeid A, Ongeri EM. Meprin β expression modulates the interleukin-6 mediated JAK2-STAT3 signaling pathway in ischemia/reperfusion-induced kidney injury. Physiol Rep 2022; 10:e15468. [PMID: 36117389 PMCID: PMC9483619 DOI: 10.14814/phy2.15468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023] Open
Abstract
Meprin metalloproteinases have been implicated in the pathophysiology of ischemia/reperfusion (IR)-induced kidney injury. Previous in vitro data showed that meprin β proteolytically processes interleukin-6 (IL-6) resulting in its inactivation. Recently, meprin-β was also shown to cleave the IL-6 receptor. The goal of this study was to determine how meprin β expression impacts IL-6 and downstream modulators of the JAK2-STAT3-mediated signaling pathway in IR-induced kidney injury. IR was induced in 12-week-old male wild-type (WT) and meprin β knockout (βKO) mice and kidneys obtained at 24 h post-IR. Real-time PCR, western blot, and immunostaining/microscopy approaches were used to quantify mRNA and protein levels respectively, and immunofluorescence counterstaining with proximal tubule (PT) markers to determine protein localization. The mRNA levels for IL-6, CASP3 and BCL-2 increased significantly in both genotypes. Interestingly, western blot data showed increases in protein levels for IL-6, CASP3, and BCL-2 in the βKO but not in WT kidneys. However, immunohistochemical data showed increases in IL-6, CASP3, and BCL-2 proteins in select kidney tubules in both genotypes, shown to be PTs by immunofluorescence counterstaining. IR-induced increases in p-STAT-3 and p-JAK-2 in βKO at a global level but immunoflourescence counterstaining demonstrated p-JAK2 and p-STAT3 increases in select PT for both genotypes. BCL-2 increased only in the renal corpuscle of WT kidneys, suggesting a role for meprins expressed in leukocytes. Immunohistochemical analysis confirmed higher levels of leukocyte infiltration in WT kidneys when compared to βKO kidneys. The present data demonstrate that meprin β modulates IR-induced kidney injury in part via IL-6/JAK2/STAT3-mediated signaling.
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Affiliation(s)
- Shaymaa Abousaad
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| | - Faihaa Ahmed
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| | - Ayman Abouzeid
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
| | - Elimelda Moige Ongeri
- Department of KinesiologyCollege of Health and Human Sciences, North Carolina A&T State UniversityGreensboroNorth CarolinaUSA
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2
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Kyei-Barffour I, Margetts M, Vash-Margita A, Pelosi E. The Embryological Landscape of Mayer-Rokitansky-Kuster-Hauser Syndrome: Genetics and Environmental Factors. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2021; 94:657-672. [PMID: 34970104 PMCID: PMC8686787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is a disorder caused by Müllerian ducts dysgenesis affecting 1 in 5000 women with a typical 46,XX karyotype. The etiology of MRKH syndrome is complex and largely unexplained. Familial clustering suggests a genetic component and the spectrum of clinical presentations seems consistent with an inheritance pattern characterized by incomplete penetrance and variable expressivity. Mutations of several candidate genes have been proposed as possible causes based on genetic analyses of human patients and animal models. In addition, studies of monozygotic twins with discordant phenotypes suggest a role for epigenetic changes following potential exposure to environmental compounds. The spectrum of clinical presentations is consistent with intricate disruptions of shared developmental pathways or signals during early organogenesis. However, the lack of functional validation and translational studies have limited our understanding of the molecular mechanisms involved in this condition. The clinical management of affected women, including early diagnosis, genetic testing of MRKH syndrome, and the implementation of counseling strategies, is significantly impeded by these knowledge gaps. Here, we illustrate the embryonic development of tissues and organs affected by MRKH syndrome, highlighting key pathways that could be involved in its pathogenesis. In addition, we will explore the genetics of this condition, as well as the potential role of environmental factors, and discuss their implications to clinical practice.
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Affiliation(s)
- Isaac Kyei-Barffour
- Department of Biomedical Sciences, University of Cape
Coast, Cape Coast, Ghana
| | - Miranda Margetts
- Center for American Indian and Rural Health Equity,
Montana State University, Bozeman, MT, USA
| | - Alla Vash-Margita
- Department of Obstetrics, Gynecology and Reproductive
Sciences, Division of Pediatric and Adolescent Gynecology, Yale University
School of Medicine, New Haven, CT, USA
| | - Emanuele Pelosi
- Centre for Clinical Research, The University of
Queensland, Brisbane, QLD, Australia
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3
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Zhang Y, Hao J, Du Z, Li P, Hu J, Ruan M, Li S, Ma Y, Lou Q. Inhibition of hepatocyte nuclear factor 1β contributes to cisplatin nephrotoxicity via regulation of nf-κb pathway. J Cell Mol Med 2021; 25:2861-2871. [PMID: 33512774 PMCID: PMC7957194 DOI: 10.1111/jcmm.16316] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 12/12/2022] Open
Abstract
Cisplatin nephrotoxicity has been considered as serious side effect caused by cisplatin‐based chemotherapy. Recent evidence indicates that renal tubular cell apoptosis and inflammation contribute to the progression of cisplatin‐induced acute kidney injury (AKI). Hepatocyte nuclear factor 1β (HNF1β) has been reported to regulate the development of kidney cystogenesis, diabetic nephrotoxicity, etc However, the regulatory mechanism of HNF1β in cisplatin nephrotoxicity is largely unknown. In the present study, we examined the effects of HNF1β deficiency on the development of cisplatin‐induced AKI in vitro and in vivo. HNF1β down‐regulation exacerbated cisplatin‐induced RPTC apoptosis by indirectly inducing NF‐κB p65 phosphorylation and nuclear translocation. HNF1β knockdown C57BL/6 mice were constructed by injecting intravenously with HNF1β‐interfering shRNA and PEI. The HNF1β scramble and knockdown mice were treated with 30 mg/kg cisplatin for 3 days to induce acute kidney injury. Cisplatin treatment caused increased caspase 3 cleavage and p65 phosphorylation, elevated serum urea nitrogen and creatinine, and obvious histological damage of kidney such as fractured tubules in control mice, which were enhanced in HNF1β knockdown mice. These results suggest that HNF1β may ameliorate cisplatin nephrotoxicity in vitro and in vivo, probably through regulating NF‐κB signalling pathway.
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Affiliation(s)
- Yan Zhang
- Joint National Laboratory for Antibody Drug Engineering, Henan University, Kaifeng, China
| | - Jielu Hao
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Zijun Du
- Joint National Laboratory for Antibody Drug Engineering, Henan University, Kaifeng, China
| | - Peiyao Li
- Joint National Laboratory for Antibody Drug Engineering, Henan University, Kaifeng, China
| | - Jinghua Hu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Mengna Ruan
- Department of Nephrology, Changzheng Hospital, Naval Medical University, Shanghai, China
| | - Shulian Li
- Joint National Laboratory for Antibody Drug Engineering, Henan University, Kaifeng, China
| | - Yuanfang Ma
- Joint National Laboratory for Antibody Drug Engineering, Henan University, Kaifeng, China
| | - Qiang Lou
- Joint National Laboratory for Antibody Drug Engineering, Henan University, Kaifeng, China
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4
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Yun Y, Chen J, Wang X, Li Y, Hu Z, Yang P, Qin L. Tofacitinib Ameliorates Lipopolysaccharide-Induced Acute Kidney Injury by Blocking the JAK-STAT1/STAT3 Signaling Pathway. BIOMED RESEARCH INTERNATIONAL 2021; 2021:8877056. [PMID: 33511217 PMCID: PMC7822662 DOI: 10.1155/2021/8877056] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/05/2020] [Accepted: 01/04/2021] [Indexed: 12/30/2022]
Abstract
Septic acute kidney injury (AKI) is the most common AKI syndrome in the intensive care unit (ICU), and it accounts for approximately half of AKI cases. Tofacitinib (TOFA) is a pan-Janus kinase (JAK) inhibitor that exhibits potent anti-inflammatory activity in rheumatoid arthritis. However, no study has examined the functional role of TOFA in septic AKI. In the present study, we investigated the protective effects of TOFA on septic AKI and the underlying mechanisms. A lipopolysaccharide- (LPS-) induced AKI model was established in C57BL/6 mice via an intraperitoneal injection of LPS (10 mg/kg). One hour after LPS challenge, the mice were orally administered TOFA (5, 10, or 15 mg/kg) every 6 h until sacrifice at 24 h. We found that TOFA significantly ameliorated LPS-induced renal histopathological changes and dysfunction. TOFA also suppressed the expression levels of proinflammatory cytokines (TNF-α, IL-1β, IL-6, and IFN-γ) and the parameters of oxidative stress (MDA, GSH, SOD, and CAT) in kidney tissues. These results may be associated with the inhibitory effect of TOFA on the JAK-STAT1/STAT3 pathway, which was significantly activated by LPS challenge. TOFA treatment also inhibited LPS-induced activation of the TLR4/NF-κB pathway. In conclusion, we revealed that TOFA had a protective effect on LPS-induced AKI, and it may be a promising therapeutic agent for septic AKI.
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Affiliation(s)
- Yang Yun
- Department of Physiology, China Medical University, Liaoning 110122, China
| | - Jingyu Chen
- Department of Physiology, China Medical University, Liaoning 110122, China
| | - Xuejiao Wang
- Department of Physiology, China Medical University, Liaoning 110122, China
| | - Yingzhuo Li
- Department of Physiology, China Medical University, Liaoning 110122, China
| | - Zhifan Hu
- Department of Physiology, China Medical University, Liaoning 110122, China
| | - Pingting Yang
- Department of Rheumatology and Immunology, First Affiliated Hospital, China Medical University, Liaoning 110001, China
| | - Ling Qin
- Department of Physiology, China Medical University, Liaoning 110122, China
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5
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Ferrè S, Igarashi P. New insights into the role of HNF-1β in kidney (patho)physiology. Pediatr Nephrol 2019; 34:1325-1335. [PMID: 29961928 PMCID: PMC6312759 DOI: 10.1007/s00467-018-3990-7] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/24/2018] [Accepted: 05/25/2018] [Indexed: 12/14/2022]
Abstract
Hepatocyte nuclear factor-1β (HNF-1β) is an essential transcription factor that regulates the development and function of epithelia in the kidney, liver, pancreas, and genitourinary tract. Humans who carry HNF1B mutations develop heterogeneous renal abnormalities, including multicystic dysplastic kidneys, glomerulocystic kidney disease, renal agenesis, renal hypoplasia, and renal interstitial fibrosis. In the embryonic kidney, HNF-1β is required for ureteric bud branching, initiation of nephrogenesis, and nephron segmentation. Ablation of mouse Hnf1b in nephron progenitors causes defective tubulogenesis, whereas later inactivation in elongating tubules leads to cyst formation due to downregulation of cystic disease genes, including Umod, Pkhd1, and Pkd2. In the adult kidney, HNF-1β controls the expression of genes required for intrarenal metabolism and solute transport by tubular epithelial cells. Tubular abnormalities observed in HNF-1β nephropathy include hyperuricemia with or without gout, hypokalemia, hypomagnesemia, and polyuria. Recent studies have identified novel post-transcriptional and post-translational regulatory mechanisms that control HNF-1β expression and activity, including the miRNA cluster miR17 ∼ 92 and the interacting proteins PCBD1 and zyxin. Further understanding of the molecular mechanisms upstream and downstream of HNF-1β may lead to the development of new therapeutic approaches in cystic kidney disease and other HNF1B-related renal diseases.
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Affiliation(s)
- Silvia Ferrè
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, Texas, USA,Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Peter Igarashi
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA. .,Department of Medicine, University of Minnesota Medical School, 420 Delaware St. SE, MMC 194, Minneapolis, MN, 55455, USA.
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6
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Loeschenberger B, Niess L, Würzner R, Schwelberger H, Eder IE, Puhr M, Guenther J, Troppmair J, Rudnicki M, Neuwirt H. Calcineurin inhibitor-induced complement system activation via ERK1/2 signalling is inhibited by SOCS-3 in human renal tubule cells. Eur J Immunol 2017; 48:330-343. [PMID: 29143318 DOI: 10.1002/eji.201747135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 09/12/2017] [Accepted: 11/03/2017] [Indexed: 12/22/2022]
Abstract
One factor that significantly contributes to renal allograft loss is chronic calcineurin inhibitor (CNI) nephrotoxicity (CIN). Among other factors, the complement (C-) system has been proposed to be involved CIN development. Hence, we investigated the impact of CNIs on intracellular signalling and the effects on the C-system in human renal tubule cells. In a qPCR array, CNI treatment upregulated C-factors and downregulated SOCS-3 and the complement inhibitors CD46 and CD55. Additionally, ERK1/-2 was required for these regulations. Following knock-down and overexpression of SOCS-3, we found that SOCS-3 inhibits ERK1/-2 signalling. Finally, we assessed terminal complement complex formation, cell viability and apoptosis. Terminal complement complex formation was induced by CNIs. Cell viability was significantly decreased, whereas apoptosis was increased. Both effects were reversed under complement component-depleted conditions. In vivo, increased ERK1/-2 phosphorylation and SOCS-3 downregulation were observed at the time of transplantation in renal allograft patients who developed a progressive decline of renal function in the follow-up compared to stable patients. The progressive cohort also had lower total C3 levels, suggesting higher complement activity at baseline. In conclusion, our data suggest that SOCS-3 inhibits CNI-induced ERK1/-2 signalling, thereby blunting the negative control of C-system activation.
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Affiliation(s)
| | - Lea Niess
- Department of Internal Medicine IV, Innsbruck Medical University, Innsbruck, Austria
| | - Reinhard Würzner
- Division of Hygiene and Medical Microbiology, Innsbruck Medical University, Innsbruck, Austria
| | - Hubert Schwelberger
- Molecular Biology Laboratory, Department of Visceral, Transplant and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria
| | - Iris E Eder
- Department of Urology, Division of Experimental Urology, Innsbruck Medical University, Innsbruck, Austria
| | - Martin Puhr
- Department of Urology, Division of Experimental Urology, Innsbruck Medical University, Innsbruck, Austria
| | - Julia Guenther
- Daniel Swarovski Research Laboratory, Department of Visceral, Transplant- and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria
| | - Jakob Troppmair
- Daniel Swarovski Research Laboratory, Department of Visceral, Transplant- and Thoracic Surgery, Innsbruck Medical University, Innsbruck, Austria
| | - Michael Rudnicki
- Department of Internal Medicine IV, Innsbruck Medical University, Innsbruck, Austria
| | - Hannes Neuwirt
- Department of Internal Medicine IV, Innsbruck Medical University, Innsbruck, Austria
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7
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Bickley LK, van Aerle R, Brown AR, Hargreaves A, Huby R, Cammack V, Jackson R, Santos EM, Tyler CR. Bioavailability and Kidney Responses to Diclofenac in the Fathead Minnow (Pimephales promelas). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:1764-1774. [PMID: 28068076 DOI: 10.1021/acs.est.6b05079] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Diclofenac is one of the most widely prescribed nonsteroidal anti-inflammatory drugs worldwide. It is frequently detected in surface waters; however, whether this pharmaceutical poses a risk to aquatic organisms is debated. Here we quantified the uptake of diclofenac by the fathead minnow (Pimephales promelas) following aqueous exposure (0.2-25.0 μg L-1) for 21 days, and evaluated the tissue and biomolecular responses in the kidney. Diclofenac accumulated in a concentration- and time-dependent manner in the plasma of exposed fish. The highest plasma concentration observed (for fish exposed to 25 μg L-1 diclofenac) was within the therapeutic range for humans. There was a strong positive correlation between exposure concentration and the number of developing nephrons observed in the posterior kidney. Diclofenac was not found to modulate the expression of genes in the kidney associated with its primary mode of action in mammals (prostaglandin-endoperoxide synthases) but modulated genes associated with kidney repair and regeneration. There were no significant adverse effects following 21 days exposure to concentrations typical of surface waters. The combination of diclofenac's uptake potential, effects on kidney nephrons and relatively small safety margin for some surface waters may warrant a longer term chronic health effects analysis for diclofenac in fish.
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Affiliation(s)
- Lisa K Bickley
- Biosciences, College of Life and Environmental Sciences, University of Exeter , Exeter, EX4 4QD, U.K
| | - Ronny van Aerle
- Biosciences, College of Life and Environmental Sciences, University of Exeter , Exeter, EX4 4QD, U.K
- Centre for Environment, Fisheries, and Aquaculture Science (Cefas), Barrack Road, The Nothe, Weymouth, Dorset DT4 8UB, U.K
| | - A Ross Brown
- Biosciences, College of Life and Environmental Sciences, University of Exeter , Exeter, EX4 4QD, U.K
| | - Adam Hargreaves
- AstraZeneca Drug Safety and Metabolism, Alderley Park, Macclesfield, Cheshire SK10 4TF, U.K
- PathCelerate Ltd. The BioHub at Alderley Park, Alderley Edge, Cheshire SK10 4TG, U.K
| | - Russell Huby
- Bioscript, St Peter's Institute , Macclesfield, Cheshire SK11 7HS, U.K
| | - Victoria Cammack
- AstraZeneca Global Environment, Alderley Park, Macclesfield, Cheshire SK10 4TF, U.K
| | - Richard Jackson
- AstraZeneca Drug Safety and Metabolism, Alderley Park, Macclesfield, Cheshire SK10 4TF, U.K
- Institute of Psychiatry, Psychology and Neuroscience, King's College London , De Crespigny Park, Box 63, SE5 8AF, London, U.K
| | - Eduarda M Santos
- Biosciences, College of Life and Environmental Sciences, University of Exeter , Exeter, EX4 4QD, U.K
| | - Charles R Tyler
- Biosciences, College of Life and Environmental Sciences, University of Exeter , Exeter, EX4 4QD, U.K
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8
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Aboudehen K, Kim MS, Mitsche M, Garland K, Anderson N, Noureddine L, Pontoglio M, Patel V, Xie Y, DeBose-Boyd R, Igarashi P. Transcription Factor Hepatocyte Nuclear Factor-1β Regulates Renal Cholesterol Metabolism. J Am Soc Nephrol 2015; 27:2408-21. [PMID: 26712526 DOI: 10.1681/asn.2015060607] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 11/11/2015] [Indexed: 12/16/2022] Open
Abstract
HNF-1β is a tissue-specific transcription factor that is expressed in the kidney and other epithelial organs. Humans with mutations in HNF-1β develop kidney cysts, and HNF-1β regulates the transcription of several cystic disease genes. However, the complete spectrum of HNF-1β-regulated genes and pathways is not known. Here, using chromatin immunoprecipitation/next generation sequencing and gene expression profiling, we identified 1545 protein-coding genes that are directly regulated by HNF-1β in murine kidney epithelial cells. Pathway analysis predicted that HNF-1β regulates cholesterol metabolism. Expression of dominant negative mutant HNF-1β or kidney-specific inactivation of HNF-1β decreased the expression of genes that are essential for cholesterol synthesis, including sterol regulatory element binding factor 2 (Srebf2) and 3-hydroxy-3-methylglutaryl-CoA reductase (Hmgcr). HNF-1β mutant cells also expressed lower levels of cholesterol biosynthetic intermediates and had a lower rate of cholesterol synthesis than control cells. Additionally, depletion of cholesterol in the culture medium mitigated the inhibitory effects of mutant HNF-1β on the proteins encoded by Srebf2 and Hmgcr, and HNF-1β directly controlled the renal epithelial expression of proprotein convertase subtilisin-like kexin type 9, a key regulator of cholesterol uptake. These findings reveal a novel role of HNF-1β in a transcriptional network that regulates intrarenal cholesterol metabolism.
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Affiliation(s)
- Karam Aboudehen
- Departments of Internal Medicine, Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota; and
| | | | | | | | | | | | - Marco Pontoglio
- Department of Development, Reproduction and Cancer, National Institute of Health and Medical Research (INSERM) U1016, The National Center for Scientific Research (CNRS) Joint Research Unit (UMR) 8104, University of Paris Descartes, Institut Cochin, Paris, France
| | | | | | - Russell DeBose-Boyd
- Molecular Genetics, and Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Peter Igarashi
- Departments of Internal Medicine, Department of Medicine, University of Minnesota Medical School, Minneapolis, Minnesota; and Pediatrics and
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9
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Mandai M, Amano Y, Yamaguchi K, Matsumura N, Baba T, Konishi I. Ovarian clear cell carcinoma meets metabolism; HNF-1β confers survival benefits through the Warburg effect and ROS reduction. Oncotarget 2015; 6:30704-14. [PMID: 26375553 PMCID: PMC4741562 DOI: 10.18632/oncotarget.5228] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 08/10/2015] [Indexed: 12/21/2022] Open
Abstract
Ovarian clear cell carcinoma (OCCC) constitutes one of the subtypes of ovarian cancers, but it has unique clinical, histological and biological characteristics, one of which is chemo-resistance. It is also known to develop from endometriotic cyst, a benign ovarian tumor, at relatively high frequency. Recently, it is becoming well known that most of OCCCs express HNF1β, a transcription factor, which is closely associated with the development of liver, pancreas and kidney, as well as occurrence of familial forms of type 2 diabetes. Expression of HNF1β is now regarded as a hallmark of this tumor. Nevertheless, exact biological function of this gene in OCCC has not been clarified. We have shown in previous studies that microenvironment in endometriotic cysts contains severe oxidative stress and OCCC develops under such stressful environment as stress-resistant tumor, which may lead to chemo-resistance. We also showed that increased expression of HNF1β facilitates glucose uptake and glycolysis, which is known as Warburg effect. In the previous issue of this journal, by using comprehensive metabolome analysis, we report that HNF1β actually reduces and protects themselves from internal oxidative stress by dramatically changing cellular metabolism. In this article, we review the relevance and significance of cancer-specific metabolism and how they are associated with biological characteristics of OCCC via expression of HNF1β, along with future clinical implications of targeting cancer-specific metabolism.
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Affiliation(s)
- Masaki Mandai
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Obstetrics and Gynecology, Kinki University Faculty of Medicine, Osaka-Sayama, Japan
| | - Yasuaki Amano
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ken Yamaguchi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Noriomi Matsumura
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Tsukasa Baba
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Ikuo Konishi
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan
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10
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Brosius FC, He JC. JAK inhibition and progressive kidney disease. Curr Opin Nephrol Hypertens 2015; 24:88-95. [PMID: 25415616 DOI: 10.1097/mnh.0000000000000079] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW To review the role of Janus kinase-signal transducer and activator of transcription (JAK-STAT) signaling in the progression of chronic kidney diseases. RECENT FINDINGS The JAK-STAT pathway transmits signals from extracellular ligands, including many cytokines and chemokines. While these responses are best characterized in lymphoid cells, they also occur in kidney cells such as podocytes, mesangial cells, and tubular cells. JAK-STAT expression and signaling abnormalities occur in humans and animal models of different chronic kidney diseases. Enhanced expression and augmented activity of JAK1, JAK2, and STAT3 promote diabetic nephropathy and their inhibition appears to reduce the disease. Activation of JAK-STAT signaling in autosomal dominant polycystic kidney disease may play an important role in cyst growth. Activation of JAK-STAT signaling promotes HIV-associated nephropathy and may also participate in the tubular responses to chronic obstructive uropathy. On the basis of data from experimental models, inhibition of JAK-STAT signaling, via increased expression of the suppressors of cytokine signaling proteins or pharmacologic inhibition of JAK and STAT proteins, could play a therapeutic role in multiple chronic kidney diseases. SUMMARY Activation of the JAK-STAT pathway appears to play a role in the progression of some chronic kidney diseases. More work is needed to determine the specific role the pathway plays in individual diseases.
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Affiliation(s)
- Frank C Brosius
- aDepartments of Internal Medicine and Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, USA bDepartment of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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11
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Heitmeier M, McCracken R, Micanovic R, Khan S, El-Achkar TM. The role of tumor necrosis factor alpha in regulating the expression of Tamm-Horsfall Protein (uromodulin) in thick ascending limbs during kidney injury. Am J Nephrol 2014; 40:458-67. [PMID: 25503683 DOI: 10.1159/000369836] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 11/10/2014] [Indexed: 12/26/2022]
Abstract
BACKGROUND Tamm-Horsfall Protein (THP) is a glycoprotein expressed exclusively by cells of the thick ascending loop (TAL) of Henle. THP has a protective role in acute kidney injury (AKI), and its expression is downregulated in the early stages of injury. Tumor necrosis factor alpha (TNFα) is a cytokine endogenously expressed by the TAL and is also induced by AKI. Therefore, we hypothesized that TNFα is a key regulator of THP expression. METHODS We used a mouse model of AKI (ischemia-reperfusion injury, IRI) and a cell culture system of a TAL cell line (MKTAL). RESULTS We show that TNFα is upregulated by TAL cells early after AKI in vivo. The expression of THP and its transcription factor Hepatocyte nuclear factor 1β (HNF1β) were concomitantly decreased at the peak of injury. Furthermore, recombinant TNFα inhibits significantly, and in a dose-dependent manner, the expression of THP, but not HNF1β in MKTAL cells. Interestingly, neither TNFα neutralization nor genetic deletion of TNFα increased THP or HNF levels after injury in vivo. CONCLUSION Our data suggest that TNFα can inhibit the expression of THP in TAL cells via an HNF1β-independent mechanism, but the downregulation of THP expression in the early AKI does not depend on TNFα. We propose that TNFα regulates THP expression in a homeostatic setting, but the impact of TNFα on THP during kidney injury is superseded by other factors that could inhibit HNF1β-mediated expression of THP.
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12
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Talbot JJ, Song X, Wang X, Rinschen MM, Doerr N, LaRiviere WB, Schermer B, Pei YP, Torres VE, Weimbs T. The cleaved cytoplasmic tail of polycystin-1 regulates Src-dependent STAT3 activation. J Am Soc Nephrol 2014; 25:1737-48. [PMID: 24578126 PMCID: PMC4116067 DOI: 10.1681/asn.2013091026] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 12/06/2013] [Indexed: 12/30/2022] Open
Abstract
Polycystin-1 (PC1) mutations result in proliferative renal cyst growth and progression to renal failure in autosomal dominant polycystic kidney disease (ADPKD). The transcription factor STAT3 (signal transducer and activator of transcription 3) was shown to be activated in cyst-lining cells in ADPKD and PKD mouse models and may drive renal cyst growth, but the mechanisms leading to persistent STAT3 activation are unknown. A proteolytic fragment of PC1 corresponding to the cytoplasmic tail, PC1-p30, is overexpressed in ADPKD. Here, we show that PC1-p30 interacts with the nonreceptor tyrosine kinase Src, resulting in Src-dependent activation of STAT3 by tyrosine phosphorylation. The PC1-p30-mediated activation of Src/STAT3 was independent of JAK family kinases and insensitive to the STAT3 inhibitor suppressor of cytokine signaling 3. Signaling by the EGF receptor (EGFR) or cAMP amplified the activation of Src/STAT3 by PC1-p30. Expression of PC1-p30 changed the cellular response to cAMP signaling. In the absence of PC1-p30, cAMP dampened EGFR- or IL-6-dependent activation of STAT3; in the presence of PC1-p30, cAMP amplified Src-dependent activation of STAT3. In the polycystic kidney (PCK) rat model, activation of STAT3 in renal cystic cells depended on vasopressin receptor 2 (V2R) signaling, which increased cAMP levels. Genetic inhibition of vasopressin expression or treatment with a pharmacologic V2R inhibitor strongly suppressed STAT3 activation and reduced renal cyst growth. These results suggest that PC1, via its cleaved cytoplasmic tail, integrates signaling inputs from EGFR and cAMP, resulting in Src-dependent activation of STAT3 and a proliferative response.
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Affiliation(s)
- Jeffrey J Talbot
- Department of Molecular, Cellular, and Developmental Biology, and Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California
| | - Xuewen Song
- Divisions of Nephrology and Genomic Medicine, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Xiaofang Wang
- Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota
| | - Markus M Rinschen
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, Cologne, Germany
| | - Nicholas Doerr
- Department of Molecular, Cellular, and Developmental Biology, and Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California
| | - Wells B LaRiviere
- Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota
| | - Bernhard Schermer
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, Cologne, Germany; Systems Biology of Aging Cologne (Sybacol), Cologne, Germany; and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, Cologne, Germany
| | - York P Pei
- Divisions of Nephrology and Genomic Medicine, University Health Network and University of Toronto, Toronto, Ontario, Canada
| | - Vicente E Torres
- Division of Nephrology and Hypertension, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota
| | - Thomas Weimbs
- Department of Molecular, Cellular, and Developmental Biology, and Neuroscience Research Institute, University of California Santa Barbara, Santa Barbara, California;
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13
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Weimbs T, Olsan EE, Talbot JJ. Regulation of STATs by polycystin-1 and their role in polycystic kidney disease. JAKSTAT 2014; 2:e23650. [PMID: 24058808 PMCID: PMC3710321 DOI: 10.4161/jkst.23650] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 01/16/2013] [Accepted: 01/17/2013] [Indexed: 01/14/2023] Open
Abstract
Autosomal-dominant polycystic kidney disease (ADPKD) is a common genetic disease caused by mutations in the gene coding for polycystin-1 (PC1). PC1 can regulate STAT transcription factors by a novel, dual mechanism. STAT3 and STAT6 are aberrantly activated in renal cysts. Genetic and pharmacological approaches to inhibit STAT3 or STAT6 have led to promising results in ADPKD mouse models. Here, we review current findings that lead to a model of PC1 as a key regulator of STAT signaling in renal tubule cells. We discuss how PC1 may orchestrate appropriate epithelial responses to renal injury, and how this system may lead to aberrant STAT activation in ADPKD thereby causing inappropriate activation of tissue repair programs that culminate in renal cyst growth and fibrosis.
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Affiliation(s)
- Thomas Weimbs
- Department of Molecular, Cellular, and Developmental Biology; and Neuroscience Research Institute; University of California, Santa Barbara; Santa Barbara, CA USA
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14
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Abstract
Mutations in the gene coding for the integral membrane protein polycystin-1 (PC1) are the cause of most cases of autosomal-dominant polycystic kidney disease (ADPKD), a very common disease that leads to kidney failure and currently lacks approved treatment. Recent work has revealed that PC1 can regulate the transcription factor STAT3, and that STAT3 is aberrantly activated in the kidneys of ADPKD patients and PKD mouse models. Recent approaches to directly inhibit STAT3 in PKD mouse models have been promising. Numerous signaling pathways are known to activate STAT3 and many have long been implicated in the pathogenesis of PKD - such as EGF/EGFR, HGF/c-Met, Src. However, a role of STAT3 in the pathogenesis of PKD had never been considered until now. Here, we review the current findings that suggest that STAT3 is a promising target for the treatment of PKD.
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Affiliation(s)
- Thomas Weimbs
- Department of Molecular, Cellular, and Developmental Biology; and Neuroscience Research Institute, University of California, Santa Barbara, CA 93106-9610, U.S.A
| | - Jeffrey J Talbot
- Department of Molecular, Cellular, and Developmental Biology; and Neuroscience Research Institute, University of California, Santa Barbara, CA 93106-9610, U.S.A
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15
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Uekuri C, Shigetomi H, Ono S, Sasaki Y, Matsuura M, Kobayashi H. Toward an understanding of the pathophysiology of clear cell carcinoma of the ovary (Review). Oncol Lett 2013; 6:1163-1173. [PMID: 24179489 PMCID: PMC3813717 DOI: 10.3892/ol.2013.1550] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 07/29/2013] [Indexed: 12/12/2022] Open
Abstract
Endometriosis-associated ovarian cancers demonstrate substantial morphological and genetic diversity. The transcription factor, hepatocyte nuclear factor (HNF)-1β, may be one of several key genes involved in the identity of ovarian clear cell carcinoma (CCC). The present study reviews a considerably expanded set of HNF-1β-associated genes and proteins that determine the pathophysiology of CCC. The current literature was reviewed by searching MEDLINE/PubMed. Functional interpretations of gene expression profiling in CCC are provided. Several important CCC-related genes overlap with those known to be regulated by the upregulation of HNF-1β expression, along with a lack of estrogen receptor (ER) expression. Furthermore, the genetic expression pattern in CCC resembles that of the Arias-Stella reaction, decidualization and placentation. HNF-1β regulates a subset of progesterone target genes. HNF-1β may also act as a modulator of female reproduction, playing a role in endometrial regeneration, differentiation, decidualization, glycogen synthesis, detoxification, cell cycle regulation, implantation, uterine receptivity and a successful pregnancy. In conclusion, the present study focused on reviewing the aberrant expression of CCC-specific genes and provided an update on the pathological implications and molecular functions of well-characterized CCC-specific genes.
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Affiliation(s)
- Chiharu Uekuri
- Department of Obstetrics and Gynecology, Nara Medical University, Kashihara, Nara 634-8522, Japan
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16
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Akasaka J, Uekuri C, Shigetomi H, Koike M, Kobayashi H. Hepatocyte nuclear factor (HNF)-1β and its physiological importance in endometriosis. Biomed Rep 2012; 1:13-17. [PMID: 24648885 DOI: 10.3892/br.2012.19] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Accepted: 10/05/2012] [Indexed: 11/05/2022] Open
Abstract
Endometriosis is associated with pelvic pain and female infertility. Endometriosis induces inflammation and is vulnerable to oxidative stress damage. To update and summarize the literature concerning the mechanisms that serve to protect genomic DNA from the oxidative damage, the present study reviews the English-language literature for biochemical studies on the transcription factor hepatocyte nuclear factor (HNF)-1β target genes. Findings demonstrated that retrograde flow of the menstrual blood might give rise to endometriosis. Iron may have a significant impact on endometriosis gene expression. HNF-1β regulates tissue-specific gene expression in endometriosis, as well as the expression of several genes, including CD44v9, which binds several molecules, including hyaluronan, epidermal growth factor receptor (EGFR), leukemia-associated Rho-guanine nucleotide exchange factor (LARG), IQ motif containing GTPase activating protein 1 (IQGAP1), macrophage migration inhibitory factor (MIF), major histocompatibility complex, class II invariant chain (CD74), cystine transporter subunit (xCT), Fas and extracellular matrix (ECM) proteins. The CD44v9 system is involved in cell migration, growth, survival, anti-apoptosis, immune response and anti-oxidative stress through maintaining higher levels of antioxidants. HNF-1β may serve to alleviate damage and promote survival of cells experiencing stress by upregulating antioxidant protein expression. This review expands current knowledge on the molecular mechanisms underlying the oxidative stress protection provided by HNF-1β and provides evidence that elevated HNF-1β activity might be associated with the CD44v9-dependent signaling cascades.
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Affiliation(s)
- Juria Akasaka
- Department of Obstetrics and Gynecology, Nara Medical University, Nara 634-8522, Japan
| | - Chiaki Uekuri
- Department of Obstetrics and Gynecology, Nara Medical University, Nara 634-8522, Japan
| | - Hiroshi Shigetomi
- Department of Obstetrics and Gynecology, Nara Medical University, Nara 634-8522, Japan
| | - Matsuki Koike
- Department of Obstetrics and Gynecology, Nara Medical University, Nara 634-8522, Japan
| | - Hiroshi Kobayashi
- Department of Obstetrics and Gynecology, Nara Medical University, Nara 634-8522, Japan
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