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Galichon P, Lannoy M, Li L, Serre J, Vandermeersch S, Legouis D, Valerius MT, Hadchouel J, Bonventre JV. Energy depletion by cell proliferation sensitizes the kidney epithelial cells to injury. Am J Physiol Renal Physiol 2024; 326:F326-F337. [PMID: 38205542 PMCID: PMC11207531 DOI: 10.1152/ajprenal.00023.2023] [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: 02/01/2023] [Revised: 11/06/2023] [Accepted: 11/06/2023] [Indexed: 01/12/2024] Open
Abstract
Acute kidney injury activates both proliferative and antiproliferative pathways, the consequences of which are not fully elucidated. If an initial proliferation of the renal epithelium is necessary for the successful repair, the persistence of proliferation markers is associated with the occurrence of chronic kidney disease. We hypothesized that proliferation in stress conditions impacts cell viability and renal outcomes. We found that proliferation is associated with cell death after various stresses in kidney cells. In vitro, the ATP/ADP ratio oscillates reproducibly throughout the cell cycle, and cell proliferation is associated with a decreased intracellular ATP/ADP ratio. In vivo, transcriptomic data from transplanted kidneys revealed that proliferation was strongly associated with a decrease in the expression of the mitochondria-encoded genes of the oxidative phosphorylation pathway, but not of the nucleus-encoded ones. These observations suggest that mitochondrial function is a limiting factor for energy production in proliferative kidney cells after injury. The association of increased proliferation and decreased mitochondrial function was indeed associated with poor renal outcomes. In summary, proliferation is an energy-demanding process impairing the cellular ability to cope with an injury, highlighting proliferative repair and metabolic recovery as indispensable and interdependent features for successful kidney repair.NEW & NOTEWORTHY ATP depletion is a hallmark of acute kidney injury. Proliferation is instrumental to kidney repair. We show that ATP levels vary during the cell cycle and that proliferation sensitizes renal epithelial cells to superimposed injuries in vitro. More proliferation and less energy production by the mitochondria are associated with adverse outcomes in injured kidney allografts. This suggests that controlling the timing of kidney repair might be beneficial to mitigate the extent of acute kidney injury.
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Affiliation(s)
- Pierre Galichon
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
- Medical School, Sorbonne Université, Paris, France
| | - Morgane Lannoy
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
| | - Li Li
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
| | - Justine Serre
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
| | - Sophie Vandermeersch
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
| | - David Legouis
- Laboratory of Nephrology, Division of Intensive Care, Department of Medicine and Cell Physiology, University Hospital of Geneva, Geneva, Switzerland
| | - M Todd Valerius
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
| | - Juliette Hadchouel
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
| | - Joseph V Bonventre
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States
- Institut National de la Santé et de la Recherche Médicale (UMR_S1155), "Common and Rare and Kidney Diseases: From Molecular Events to Precision Medicine," Paris, France
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2
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Gaupp C, Schmid B, Tripal P, Edwards A, Daniel C, Zimmermann S, Goppelt-Struebe M, Willam C, Rosen S, Schley G. Reconfiguration and loss of peritubular capillaries in chronic kidney disease. Sci Rep 2023; 13:19660. [PMID: 37952029 PMCID: PMC10640592 DOI: 10.1038/s41598-023-46146-4] [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: 02/03/2023] [Accepted: 10/27/2023] [Indexed: 11/14/2023] Open
Abstract
Functional and structural alterations of peritubular capillaries (PTCs) are a major determinant of chronic kidney disease (CKD). Using a software-based algorithm for semiautomatic segmentation and morphometric quantification, this study analyzes alterations of PTC shape associated with chronic tubulointerstitial injury in three mouse models and in human biopsies. In normal kidney tissue PTC shape was predominantly elongated, whereas the majority of PTCs associated with chronic tubulointerstitial injury had a rounder shape. This was reflected by significantly reduced PTC luminal area, perimeter and diameters as well as by significantly increased circularity and roundness. These morphological alterations were consistent in all mouse models and human kidney biopsies. The mean circularity of PTCs correlated significantly with categorized glomerular filtration rates and the degree of interstitial fibrosis and tubular atrophy (IFTA) and classified the presence of CKD or IFTA. 3D reconstruction of renal capillaries revealed not only a significant reduction, but more importantly a substantial simplification and reconfiguration of the renal microvasculature in mice with chronic tubulointerstitial injury. Computational modelling predicted that round PTCs can deliver oxygen more homogeneously to the surrounding tissue. Our findings indicate that alterations of PTC shape represent a common and uniform reaction to chronic tubulointerstitial injury independent of the underlying kidney disease.
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Affiliation(s)
- Charlotte Gaupp
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Ulmenweg 18, 91054, Erlangen, Germany
| | - Benjamin Schmid
- Optical Imaging Center Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Philipp Tripal
- Optical Imaging Center Erlangen, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Aurélie Edwards
- Department of Biomedical Engineering, Boston University, Boston, MA, USA
| | - Christoph Daniel
- Department of Nephropathology, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
| | - Stefan Zimmermann
- Department of Computer Science, University of Applied Sciences Worms, Worms, Germany
| | - Margarete Goppelt-Struebe
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Ulmenweg 18, 91054, Erlangen, Germany
| | - Carsten Willam
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Ulmenweg 18, 91054, Erlangen, Germany
| | - Seymour Rosen
- Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Gunnar Schley
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Ulmenweg 18, 91054, Erlangen, Germany.
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3
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Naas S, Schiffer M, Schödel J. Hypoxia and renal fibrosis. Am J Physiol Cell Physiol 2023; 325:C999-C1016. [PMID: 37661918 DOI: 10.1152/ajpcell.00201.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/25/2023] [Accepted: 08/25/2023] [Indexed: 09/05/2023]
Abstract
Renal fibrosis is the final stage of most progressive kidney diseases. Chronic kidney disease (CKD) is associated with high comorbidity and mortality. Thus, preventing fibrosis and thereby preserving kidney function increases the quality of life and prolongs the survival of patients with CKD. Many processes such as inflammation or metabolic stress modulate the progression of kidney fibrosis. Hypoxia has also been implicated in the pathogenesis of renal fibrosis, and oxygen sensing in the kidney is of outstanding importance for the body. The dysregulation of oxygen sensing in the diseased kidney is best exemplified by the loss of stimulation of erythropoietin production from interstitial cells in the fibrotic kidney despite anemia. Furthermore, hypoxia is present in acute or chronic kidney diseases and may affect all cell types present in the kidney including tubular and glomerular cells as well as resident immune cells. Pro- and antifibrotic effects of the transcription factors hypoxia-inducible factors 1 and 2 have been described in a plethora of animal models of acute and chronic kidney diseases, but recent advances in sequencing technologies now allow for novel and deeper insights into the role of hypoxia and its cell type-specific effects on the progression of renal fibrosis, especially in humans. Here, we review existing literature on how hypoxia impacts the development and progression of renal fibrosis.
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Affiliation(s)
- Stephanie Naas
- Department of Nephrology and Hypertension, Uniklinikum Erlangen und Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Mario Schiffer
- Department of Nephrology and Hypertension, Uniklinikum Erlangen und Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Johannes Schödel
- Department of Nephrology and Hypertension, Uniklinikum Erlangen und Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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4
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Li ZL, Ding L, Ma RX, Zhang Y, Zhang YL, Ni WJ, Tang TT, Wang GH, Wang B, Lv LL, Wu QL, Wen Y, Liu BC. Activation of HIF-1α C-terminal transactivation domain protects against hypoxia-induced kidney injury through hexokinase 2-mediated mitophagy. Cell Death Dis 2023; 14:339. [PMID: 37225700 DOI: 10.1038/s41419-023-05854-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 04/07/2023] [Accepted: 05/05/2023] [Indexed: 05/26/2023]
Abstract
The transcription factor hypoxia-inducible factor-1α (HIF-1α), as a master regulator of adaptive responses to hypoxia, possesses two transcriptional activation domains [TAD, N-terminal (NTAD), and C-terminal (CTAD)]. Although the roles of HIF-1α NTAD in kidney diseases have been recognized, the exact effects of HIF-1α CTAD in kidney diseases are poorly understood. Here, two independent mouse models of hypoxia-induced kidney injury were established using HIF-1α CTAD knockout (HIF-1α CTAD-/-) mice. Furthermore, hexokinase 2 (HK2) and mitophagy pathway are modulated using genetic and pharmacological methods, respectively. We demonstrated that HIF-1α CTAD-/- aggravated kidney injury in two independent mouse models of hypoxia-induced kidney injury, including ischemia/reperfusion-induced kidney injury and unilateral ureteral obstruction-induced nephropathy. Mechanistically, we found that HIF-1α CTAD could transcriptionally regulate HK2 and subsequently ameliorate hypoxia-induced tubule injury. Furthermore, it was found that HK2 deficiency contributed to severe renal injury through mitophagy inhibition, while mitophagy activation using urolithin A could significantly protect against hypoxia-induced kidney injury in HIF-1α C-TAD-/- mice. Our findings suggested that the HIF-1α CTAD-HK2 pathway represents a novel mechanism of kidney response to hypoxia, which provides a promising therapeutic strategy for hypoxia-induced kidney injury.
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Affiliation(s)
- Zuo-Lin Li
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Lin Ding
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Rui-Xia Ma
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
| | - Yue Zhang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Yi-Lin Zhang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Wei-Jie Ni
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Tao-Tao Tang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Gui-Hua Wang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Bin Wang
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Lin-Li Lv
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Qiu-Li Wu
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Yi Wen
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China
| | - Bi-Cheng Liu
- Institute of Nephrology, Zhong Da Hospital, Southeast University School of Medicine, Nanjing, Jiangsu, China.
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5
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Kanbay M, Altıntas A, Yavuz F, Copur S, Sanchez-Lozada LG, Lanaspa MA, Johnson RJ. Responses to Hypoxia: How Fructose Metabolism and Hypoxia-Inducible Factor-1a Pathways Converge in Health and Disease. Curr Nutr Rep 2023; 12:181-190. [PMID: 36708463 DOI: 10.1007/s13668-023-00452-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2022] [Indexed: 01/29/2023]
Abstract
PURPOSE OF REVIEW Oxygen is critical for the high output of energy (adenosine triphosphate) generated by oxidative phosphorylation in the mitochondria, and when oxygen delivery is impaired due to systemic hypoxia, impaired or reduced delivery of red blood cells, or from local ischemia, survival processes are activated. RECENT FINDINGS One major mechanism is the activation of hypoxia-inducible factors (HIFs) that act to reduce oxygen needs by blocking mitochondrial function and stimulating glucose uptake and glycolysis while also stimulating red blood cell production and local angiogenesis. Recently, endogenous fructose production with uric acid generation has also been shown to occur in hypoxic and ischemic tissues where it also appears to drive the same functions, and indeed, there is evidence that many of hypoxia-inducible factors effects may be mediated by the stimulation of fructose production and metabolism. Unfortunately, while being acutely protective, these same systems in overdrive lead to chronic inflammation and disease and may also be involved in the development of metabolic syndrome and related disease. The benefit of SGLT2 inhibitors may act in part by reducing the delivery of glucose with the stimulation of fructose formation, thereby allowing a conversion from the glycolytic metabolism to one involving mitochondrial metabolism. The use of hypoxia-inducible factor stabilizers is expected to aid the treatment of anemia but, in the long-term, could potentially lead to worsening cardiovascular and metabolic outcomes. We suggest more studies are needed on the use of these agents.
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Affiliation(s)
- Mehmet Kanbay
- Division of Nephrology, Department of Medicine, Koc University School of Medicine, Istanbul, Turkey.
| | - Alara Altıntas
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Furkan Yavuz
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Sidar Copur
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Laura G Sanchez-Lozada
- Department of Cardio-Renal Physiopathology, National Institute of Cardiology Ignacio Chavez, Mexico City, Mexico
| | - Miguel A Lanaspa
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Richard J Johnson
- Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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6
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Acute Kidney Injury Is Associated with Higher Serum Cys-C and NGAL Concentrations, and Risk of Mortality in Premature Calves with Respiratory Distress Syndrome. Animals (Basel) 2023; 13:ani13020232. [PMID: 36670772 PMCID: PMC9854810 DOI: 10.3390/ani13020232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 01/02/2023] [Accepted: 01/04/2023] [Indexed: 01/10/2023] Open
Abstract
The purpose of the present study was to establish the development of acute kidney injury (AKI) and evaluate the usefulness of kidney-specific biomarkers in diagnosing AKI in premature calves with respiratory distress syndrome (RDS). Ten-term healthy and 70 premature calves with RDS were enrolled. Clinical examination, blood gases, and chemical analysis were performed at admission and 72 h. Serum concentrations of blood urea nitrogen (BUN), creatinine (Cre), phosphorus (P), cystatin-C (Cys-C), neutrophil gelatinase-associated lipocalin (NGAL), uromodulin (UMOD), and liver-type fatty acid-binding protein (L-FABP) were measured to evaluate kidney injury. Our findings showed that 38.5% of the premature calves with RDS developed AKI. The RDS-AKI group had a 4-fold higher mortality risk than the RDS-non-AKI group. Cys-C, with 90% and 89% specificity, and NGAL, with 100% sensitivity and 85% specificity, were the most reliable biomarkers to determine AKI in premature calves. The usefulness of any biomarker to predict mortality was not found to be convincing. In conclusion, AKI can develop as a consequence of hypoxia in premature calves and may increase the risk of mortality. In addition, serum Cys-C and NGAL concentrations may be useful in the diagnosis of AKI in premature calves with RDS.
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7
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Wang Z, Zhang C. From AKI to CKD: Maladaptive Repair and the Underlying Mechanisms. Int J Mol Sci 2022; 23:ijms231810880. [PMID: 36142787 PMCID: PMC9504835 DOI: 10.3390/ijms231810880] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022] Open
Abstract
Acute kidney injury (AKI) is defined as a pathological condition in which the glomerular filtration rate decreases rapidly over a short period of time, resulting in changes in the physiological function and tissue structure of the kidney. An increasing amount of evidence indicates that there is an inseparable relationship between acute kidney injury and chronic kidney disease (CKD). With the progress in research in this area, researchers have found that the recovery of AKI may also result in the occurrence of CKD due to its own maladaptation and other potential mechanisms, which involve endothelial cell injury, inflammatory reactions, progression to fibrosis and other pathways that promote the progress of the disease. Based on these findings, this review summarizes the occurrence and potential mechanisms of maladaptive repair in the progression of AKI to CKD and explores possible treatment strategies in this process so as to provide a reference for the inhibition of the progression of AKI to CKD.
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8
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Bondi CD, Rush BM, Hartman HL, Wang J, Al-Bataineh MM, Hughey RP, Tan RJ. Suppression of NRF2 Activity by HIF-1α Promotes Fibrosis after Ischemic Acute Kidney Injury. Antioxidants (Basel) 2022; 11:1810. [PMID: 36139884 PMCID: PMC9495756 DOI: 10.3390/antiox11091810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/04/2022] [Accepted: 09/08/2022] [Indexed: 01/26/2023] Open
Abstract
Acute kidney injury (AKI) is a rapid decline in renal function and can occur after ischemia/reperfusion injury (IRI) to the tubular epithelia. The nuclear factor erythroid-2-related factor 2 (NRF2) pathway protects against AKI and AKI-to-chronic kidney disease (CKD) progression, but we previously demonstrated that severe IRI maladaptively reduced NRF2 activity in mice. To understand the mechanism of this response, we subjected C57BL/6J mice to unilateral kidney IRI with ischemia times that were titrated to induce mild to severe injury. Mild IRI increased NRF2 activity and was associated with renal recovery, whereas severe IRI decreased NRF2 activity and led to progressive CKD. Due to these effects of ischemia, we tested the hypothesis that hypoxia-inducible factor-1α (HIF-1α) mediates NRF2 activity. To mimic mild and severe ischemia, we activated HIF-1α in HK-2 cells in nutrient-replete or nutrient-deficient conditions. HIF-1α activation in nutrient-replete conditions enhanced NRF2 nuclear localization and activity. However, in nutrient-deficient conditions, HIF-1α activation suppressed NRF2 nuclear localization and activity. Nuclear localization was rescued with HIF-1α siRNA knockdown. Our results suggest that severe ischemic AKI leads to HIF-1α-mediated suppression of NRF2, leading to AKI-to-CKD progression.
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Affiliation(s)
| | | | | | | | | | | | - Roderick J. Tan
- Department of Medicine, University of Pittsburgh, Pittsburgh, PA 152671, USA
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9
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Hinze C, Kocks C, Leiz J, Karaiskos N, Boltengagen A, Cao S, Skopnik CM, Klocke J, Hardenberg JH, Stockmann H, Gotthardt I, Obermayer B, Haghverdi L, Wyler E, Landthaler M, Bachmann S, Hocke AC, Corman V, Busch J, Schneider W, Himmerkus N, Bleich M, Eckardt KU, Enghard P, Rajewsky N, Schmidt-Ott KM. Single-cell transcriptomics reveals common epithelial response patterns in human acute kidney injury. Genome Med 2022; 14:103. [PMID: 36085050 PMCID: PMC9462075 DOI: 10.1186/s13073-022-01108-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 08/12/2022] [Indexed: 01/07/2023] Open
Abstract
Background Acute kidney injury (AKI) occurs frequently in critically ill patients and is associated with adverse outcomes. Cellular mechanisms underlying AKI and kidney cell responses to injury remain incompletely understood. Methods We performed single-nuclei transcriptomics, bulk transcriptomics, molecular imaging studies, and conventional histology on kidney tissues from 8 individuals with severe AKI (stage 2 or 3 according to Kidney Disease: Improving Global Outcomes (KDIGO) criteria). Specimens were obtained within 1–2 h after individuals had succumbed to critical illness associated with respiratory infections, with 4 of 8 individuals diagnosed with COVID-19. Control kidney tissues were obtained post-mortem or after nephrectomy from individuals without AKI. Results High-depth single cell-resolved gene expression data of human kidneys affected by AKI revealed enrichment of novel injury-associated cell states within the major cell types of the tubular epithelium, in particular in proximal tubules, thick ascending limbs, and distal convoluted tubules. Four distinct, hierarchically interconnected injured cell states were distinguishable and characterized by transcriptome patterns associated with oxidative stress, hypoxia, interferon response, and epithelial-to-mesenchymal transition, respectively. Transcriptome differences between individuals with AKI were driven primarily by the cell type-specific abundance of these four injury subtypes rather than by private molecular responses. AKI-associated changes in gene expression between individuals with and without COVID-19 were similar. Conclusions The study provides an extensive resource of the cell type-specific transcriptomic responses associated with critical illness-associated AKI in humans, highlighting recurrent disease-associated signatures and inter-individual heterogeneity. Personalized molecular disease assessment in human AKI may foster the development of tailored therapies.
Supplementary Information The online version contains supplementary material available at 10.1186/s13073-022-01108-9.
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Affiliation(s)
- Christian Hinze
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany.,Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.,Max Delbrueck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Christine Kocks
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Janna Leiz
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.,Max Delbrueck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Nikos Karaiskos
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Anastasiya Boltengagen
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Shuang Cao
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany.,Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.,Max Delbrueck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Christopher Mark Skopnik
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.,Deutsches Rheumaforschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany
| | - Jan Klocke
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.,Deutsches Rheumaforschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany
| | - Jan-Hendrik Hardenberg
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Helena Stockmann
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Inka Gotthardt
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | | | - Laleh Haghverdi
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Emanuel Wyler
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Markus Landthaler
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Sebastian Bachmann
- Institute for Functional Anatomy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Andreas C Hocke
- Berlin Institute of Health, Berlin, Germany.,Department of Infectious Diseases and Respiratory Medicine, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Victor Corman
- Institute of Virology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Jonas Busch
- Department of Urology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Wolfgang Schneider
- Department of Pathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Nina Himmerkus
- Institute of Physiology, Christian-Albrechts-Universität, Kiel, Germany
| | - Markus Bleich
- Institute of Physiology, Christian-Albrechts-Universität, Kiel, Germany
| | - Kai-Uwe Eckardt
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany
| | - Philipp Enghard
- Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany.,Deutsches Rheumaforschungszentrum, an Institute of the Leibniz Foundation, Berlin, Germany
| | - Nikolaus Rajewsky
- Berlin Institute for Medical Systems Biology, Max Delbrueck Center in the Helmholtz Association, Berlin, Germany
| | - Kai M Schmidt-Ott
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany. .,Department of Nephrology and Medical Intensive Care, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin, Germany. .,Max Delbrueck Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany.
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10
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Kumar P, Yang Z, Lever JM, Chávez MD, Fatima H, Crossman DK, Maynard CL, George JF, Mitchell T. Hydroxyproline stimulates inflammation and reprograms macrophage signaling in a rat kidney stone model. Biochim Biophys Acta Mol Basis Dis 2022; 1868:166442. [PMID: 35562038 PMCID: PMC10101222 DOI: 10.1016/j.bbadis.2022.166442] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 05/04/2022] [Accepted: 05/06/2022] [Indexed: 11/17/2022]
Abstract
Meals rich in oxalate are associated with calcium oxalate (CaOx) kidney stone disease. Hydroxy-L-proline (HLP) is an oxalate precursor found in milk and collagen-containing foods. HLP has been shown to induce CaOx crystal formation in rodents. The purpose of this study was to evaluate the effect of HLP induced oxalate levels on inflammation and renal leukocytes during crystal formation. Male Sprague-Dawley rats (6-8 weeks old) were fed a control diet containing no oxalate for 3 days before being randomized to continue the control diet or 5% HLP for up to 28 days. Blood, 24 h urine, and kidneys were collected on Days 0, 7, 14, or 28. Urinary oxalate levels, crystal deposition, and renal macrophage markers were evaluated using ion chromatography-mass spectrometry, immunohistochemistry, and qRT-PCR. Renal leukocytes were assessed using flow cytometry and RNA-sequencing. HLP feeding increased urinary oxalate levels and renal crystal formation in animals within 7 days. HLP also increased renal macrophage populations on Days 14 and 28. Transcriptome analysis revealed that renal macrophages from animals fed HLP for 7 days were involved in inflammatory response and disease, stress response to LPS, oxidative stress, and immune cell trafficking. Renal macrophages isolated on Day 14 were involved in cell-mediated immunological pathways, ion homeostasis, and inflammatory response. Collectively, these findings suggest that HLP-mediated oxalate levels induce markers of inflammation, leukocyte populations, and reprograms signaling pathways in macrophages in a time-dependent manner. Additional studies investigating the significance of oxalate on renal macrophages could aid in our understanding of kidney stone formation.
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Affiliation(s)
- Parveen Kumar
- Department of Urology, University of Alabama Birmingham, Birmingham, AL, USA
| | - Zhengqin Yang
- Department of Nephrology, University of Alabama Birmingham, Birmingham, AL, USA
| | - Jeremie M Lever
- Department of Nephrology, University of Alabama Birmingham, Birmingham, AL, USA
| | - Miranda D Chávez
- Department of Urology, University of Alabama Birmingham, Birmingham, AL, USA
| | - Huma Fatima
- Department of Pathology, University of Alabama Birmingham, Birmingham, AL, USA
| | - David K Crossman
- Department of Medicine, University of Alabama Birmingham, Birmingham, AL, USA
| | - Craig L Maynard
- Department of Pathology, University of Alabama Birmingham, Birmingham, AL, USA
| | - James F George
- Department of Nephrology, University of Alabama Birmingham, Birmingham, AL, USA
| | - Tanecia Mitchell
- Department of Urology, University of Alabama Birmingham, Birmingham, AL, USA.
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11
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Alquraishi M, Chahed S, Alani D, Puckett DL, Dowker PD, Hubbard K, Zhao Y, Kim JY, Nodit L, Fatima H, Donohoe D, Voy B, Chowanadisai W, Bettaieb A. Podocyte specific deletion of PKM2 ameliorates LPS-induced podocyte injury through beta-catenin. Cell Commun Signal 2022; 20:76. [PMID: 35637461 PMCID: PMC9150347 DOI: 10.1186/s12964-022-00884-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 04/19/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Acute kidney injury (AKI) is associated with a severe decline in kidney function caused by abnormalities within the podocytes' glomerular matrix. Recently, AKI has been linked to alterations in glycolysis and the activity of glycolytic enzymes, including pyruvate kinase M2 (PKM2). However, the contribution of this enzyme to AKI remains largely unexplored. METHODS Cre-loxP technology was used to examine the effects of PKM2 specific deletion in podocytes on the activation status of key signaling pathways involved in the pathophysiology of AKI by lipopolysaccharides (LPS). In addition, we used lentiviral shRNA to generate murine podocytes deficient in PKM2 and investigated the molecular mechanisms mediating PKM2 actions in vitro. RESULTS Specific PKM2 deletion in podocytes ameliorated LPS-induced protein excretion and alleviated LPS-induced alterations in blood urea nitrogen and serum albumin levels. In addition, PKM2 deletion in podocytes alleviated LPS-induced structural and morphological alterations to the tubules and to the brush borders. At the molecular level, PKM2 deficiency in podocytes suppressed LPS-induced inflammation and apoptosis. In vitro, PKM2 knockdown in murine podocytes diminished LPS-induced apoptosis. These effects were concomitant with a reduction in LPS-induced activation of β-catenin and the loss of Wilms' Tumor 1 (WT1) and nephrin. Notably, the overexpression of a constitutively active mutant of β-catenin abolished the protective effect of PKM2 knockdown. Conversely, PKM2 knockdown cells reconstituted with the phosphotyrosine binding-deficient PKM2 mutant (K433E) recapitulated the effect of PKM2 depletion on LPS-induced apoptosis, β-catenin activation, and reduction in WT1 expression. CONCLUSIONS Taken together, our data demonstrates that PKM2 plays a key role in podocyte injury and suggests that targetting PKM2 in podocytes could serve as a promising therapeutic strategy for AKI. TRIAL REGISTRATION Not applicable. Video abstract.
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Affiliation(s)
- Mohammed Alquraishi
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA.,Department of Community Health Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Samah Chahed
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Dina Alani
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Dexter L Puckett
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Presley D Dowker
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Katelin Hubbard
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Yi Zhao
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA.,Kellogg Eye Center, University of Michigan, Ann Arbor, MI, 48105, USA
| | - Ji Yeon Kim
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Laurentia Nodit
- Department of Pathology, University of Tennessee Medical Center, Knoxville, TN, 37920, USA
| | - Huma Fatima
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Dallas Donohoe
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA
| | - Brynn Voy
- Tennessee Agricultural Experiment Station, University of Tennessee Institute of Agriculture, Knoxville, TN, 37996-0840, USA.,Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996-0840, USA
| | - Winyoo Chowanadisai
- Department of Nutrition, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Ahmed Bettaieb
- Department of Nutrition, The University of Tennessee Knoxville, 1215 Cumberland Avenue, 229 Jessie Harris Building, Knoxville, TN, 37996-0840, USA. .,Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996-0840, USA. .,Department of Biochemistry, Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, 37996-0840, USA.
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12
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Broeker KAE, Schrankl J, Fuchs MAA, Kurtz A. Flexible and multifaceted: the plasticity of renin-expressing cells. Pflugers Arch 2022; 474:799-812. [PMID: 35511367 PMCID: PMC9338909 DOI: 10.1007/s00424-022-02694-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/21/2022] [Accepted: 04/22/2022] [Indexed: 12/14/2022]
Abstract
The protease renin, the key enzyme of the renin–angiotensin–aldosterone system, is mainly produced and secreted by juxtaglomerular cells in the kidney, which are located in the walls of the afferent arterioles at their entrance into the glomeruli. When the body’s demand for renin rises, the renin production capacity of the kidneys commonly increases by induction of renin expression in vascular smooth muscle cells and in extraglomerular mesangial cells. These cells undergo a reversible metaplastic cellular transformation in order to produce renin. Juxtaglomerular cells of the renin lineage have also been described to migrate into the glomerulus and differentiate into podocytes, epithelial cells or mesangial cells to restore damaged cells in states of glomerular disease. More recently, it could be shown that renin cells can also undergo an endocrine and metaplastic switch to erythropoietin-producing cells. This review aims to describe the high degree of plasticity of renin-producing cells of the kidneys and to analyze the underlying mechanisms.
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Affiliation(s)
- Katharina A E Broeker
- Institute of Physiology, University of Regensburg, Universitätsstraβe 31, D-93053 , Regensburg, Germany.
| | - Julia Schrankl
- Institute of Physiology, University of Regensburg, Universitätsstraβe 31, D-93053 , Regensburg, Germany
| | - Michaela A A Fuchs
- Institute of Physiology, University of Regensburg, Universitätsstraβe 31, D-93053 , Regensburg, Germany
| | - Armin Kurtz
- Institute of Physiology, University of Regensburg, Universitätsstraβe 31, D-93053 , Regensburg, Germany
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13
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Thévenod F, Schreiber T, Lee WK. Renal hypoxia-HIF-PHD-EPO signaling in transition metal nephrotoxicity: friend or foe? Arch Toxicol 2022; 96:1573-1607. [PMID: 35445830 PMCID: PMC9095554 DOI: 10.1007/s00204-022-03285-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 03/14/2022] [Indexed: 12/18/2022]
Abstract
The kidney is the main organ that senses changes in systemic oxygen tension, but it is also the key detoxification, transit and excretion site of transition metals (TMs). Pivotal to oxygen sensing are prolyl-hydroxylases (PHDs), which hydroxylate specific residues in hypoxia-inducible factors (HIFs), key transcription factors that orchestrate responses to hypoxia, such as induction of erythropoietin (EPO). The essential TM ion Fe is a key component and regulator of the hypoxia–PHD–HIF–EPO (HPHE) signaling axis, which governs erythropoiesis, angiogenesis, anaerobic metabolism, adaptation, survival and proliferation, and hence cell and body homeostasis. However, inadequate concentrations of essential TMs or entry of non-essential TMs in organisms cause toxicity and disrupt health. Non-essential TMs are toxic because they enter cells and displace essential TMs by ionic and molecular mimicry, e. g. in metalloproteins. Here, we review the molecular mechanisms of HPHE interactions with TMs (Fe, Co, Ni, Cd, Cr, and Pt) as well as their implications in renal physiology, pathophysiology and toxicology. Some TMs, such as Fe and Co, may activate renal HPHE signaling, which may be beneficial under some circumstances, for example, by mitigating renal injuries from other causes, but may also promote pathologies, such as renal cancer development and metastasis. Yet some other TMs appear to disrupt renal HPHE signaling, contributing to the complex picture of TM (nephro-)toxicity. Strikingly, despite a wealth of literature on the topic, current knowledge lacks a deeper molecular understanding of TM interaction with HPHE signaling, in particular in the kidney. This precludes rationale preventive and therapeutic approaches to TM nephrotoxicity, although recently activators of HPHE signaling have become available for therapy.
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Affiliation(s)
- Frank Thévenod
- Institute for Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Strasse 12, 58453, Witten, Germany.
| | - Timm Schreiber
- Institute for Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Strasse 12, 58453, Witten, Germany
| | - Wing-Kee Lee
- Physiology and Pathophysiology of Cells and Membranes, Medical School EWL, Bielefeld University, R.1 B2-13, Morgenbreede 1, 33615 Bielefeld, Germany
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14
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Correia MJ, Pimpão AB, Fernandes DGF, Morello J, Sequeira CO, Calado J, Antunes AMM, Almeida MS, Branco P, Monteiro EC, Vicente JB, Serpa J, Pereira SA. Cysteine as a Multifaceted Player in Kidney, the Cysteine-Related Thiolome and Its Implications for Precision Medicine. Molecules 2022; 27:1416. [PMID: 35209204 PMCID: PMC8874463 DOI: 10.3390/molecules27041416] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/15/2022] [Accepted: 02/17/2022] [Indexed: 11/16/2022] Open
Abstract
In this review encouraged by original data, we first provided in vivo evidence that the kidney, comparative to the liver or brain, is an organ particularly rich in cysteine. In the kidney, the total availability of cysteine was higher in cortex tissue than in the medulla and distributed in free reduced, free oxidized and protein-bound fractions (in descending order). Next, we provided a comprehensive integrated review on the evidence that supports the reliance on cysteine of the kidney beyond cysteine antioxidant properties, highlighting the relevance of cysteine and its renal metabolism in the control of cysteine excess in the body as a pivotal source of metabolites to kidney biomass and bioenergetics and a promoter of adaptive responses to stressors. This view might translate into novel perspectives on the mechanisms of kidney function and blood pressure regulation and on clinical implications of the cysteine-related thiolome as a tool in precision medicine.
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Affiliation(s)
- Maria João Correia
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
| | - António B. Pimpão
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
| | - Dalila G. F. Fernandes
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), 2780-157 Oeiras, Portugal; (D.G.F.F.); (J.B.V.)
| | - Judit Morello
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
| | - Catarina O. Sequeira
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
| | - Joaquim Calado
- Centre for Toxicogenomics and Human Health (ToxOmics), Genetics, Oncology and Human Toxicology, Nova Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal;
- Nephrology Department, Centro Hospitalar Universitário de Lisboa Central, 1069-166 Lisboa, Portugal
| | - Alexandra M. M. Antunes
- Centro de Química Estrutural, Institute of Molecular Sciences, Instituto Superior Técnico, 1049-001 Lisboa, Portugal;
| | - Manuel S. Almeida
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
| | - Patrícia Branco
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
- Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, 2790-134 Carnaxide, Portugal
| | - Emília C. Monteiro
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
| | - João B. Vicente
- Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), 2780-157 Oeiras, Portugal; (D.G.F.F.); (J.B.V.)
| | - Jacinta Serpa
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
- Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal
| | - Sofia A. Pereira
- CEDOC, NOVA Medical School, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal; (M.J.C.); (A.B.P.); (J.M.); (C.O.S.); (M.S.A.); (P.B.); (E.C.M.); (J.S.)
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15
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Verissimo T, Faivre A, Sgardello S, Naesens M, de Seigneux S, Criton G, Legouis D. Estimated Renal Metabolomics at Reperfusion Predicts One-Year Kidney Graft Function. Metabolites 2022; 12:57. [PMID: 35050179 PMCID: PMC8778290 DOI: 10.3390/metabo12010057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 12/26/2021] [Accepted: 01/04/2022] [Indexed: 02/04/2023] Open
Abstract
Renal transplantation is the gold-standard procedure for end-stage renal disease patients, improving quality of life and life expectancy. Despite continuous advancement in the management of post-transplant complications, progress is still needed to increase the graft lifespan. Early identification of patients at risk of rapid graft failure is critical to optimize their management and slow the progression of the disease. In 42 kidney grafts undergoing protocol biopsies at reperfusion, we estimated the renal metabolome from RNAseq data. The estimated metabolites' abundance was further used to predict the renal function within the first year of transplantation through a random forest machine learning algorithm. Using repeated K-fold cross-validation we first built and then tuned our model on a training dataset. The optimal model accurately predicted the one-year eGFR, with an out-of-bag root mean square root error (RMSE) that was 11.8 ± 7.2 mL/min/1.73 m2. The performance was similar in the test dataset, with a RMSE of 12.2 ± 3.2 mL/min/1.73 m2. This model outperformed classic statistical models. Reperfusion renal metabolome may be used to predict renal function one year after allograft kidney recipients.
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Affiliation(s)
- Thomas Verissimo
- Laboratory of Nephrology, Department of Medicine, University Hospitals of Geneva, 1205 Geneva, Switzerland; (T.V.); (A.F.); (S.d.S.)
| | - Anna Faivre
- Laboratory of Nephrology, Department of Medicine, University Hospitals of Geneva, 1205 Geneva, Switzerland; (T.V.); (A.F.); (S.d.S.)
| | - Sebastian Sgardello
- Department of Surgery, University Hospital of Geneva, 1205 Geneva, Switzerland;
| | - Maarten Naesens
- Service of Nephrology, University Hospitals of Leuven, 3000 Leuven, Belgium;
| | - Sophie de Seigneux
- Laboratory of Nephrology, Department of Medicine, University Hospitals of Geneva, 1205 Geneva, Switzerland; (T.V.); (A.F.); (S.d.S.)
- Service of Nephrology, Department of Internal Medicine Specialties, University Hospital of Geneva, 1205 Geneva, Switzerland
| | - Gilles Criton
- Geneva School of Economics and Management, University of Geneva, 1205 Geneva, Switzerland;
| | - David Legouis
- Laboratory of Nephrology, Department of Medicine, University Hospitals of Geneva, 1205 Geneva, Switzerland; (T.V.); (A.F.); (S.d.S.)
- Division of Intensive Care, Department of Acute Medicine, University hospital of Geneva, 1205 Geneva, Switzerland
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16
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坂下 碧, 南学 正. [Efficacy of HIF-PH inhibitors in the treatment for renal anemia]. Nihon Ronen Igakkai Zasshi 2022; 59:263-274. [PMID: 36070898 DOI: 10.3143/geriatrics.59.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
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17
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Tiwari R, Kapitsinou PP. Role of Endothelial Prolyl-4-Hydroxylase Domain Protein/Hypoxia-Inducible Factor Axis in Acute Kidney Injury. Nephron Clin Pract 2022; 146:243-248. [PMID: 34515168 PMCID: PMC8885783 DOI: 10.1159/000518632] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/21/2021] [Indexed: 01/03/2023] Open
Abstract
Ischemia reperfusion injury (IRI) results from a cessation or restriction of blood supply to an organ followed by reestablishment of perfusion and reoxygenation. In the kidney, IRI due to transplantation, cardiac surgery with cardiopulmonary bypass, and other major vascular surgeries contributes to acute kidney injury (AKI), a clinical condition associated with significant morbidity and mortality in hospitalized patients. In the postischemic kidney, endothelial damage promotes inflammatory responses and leads to persistent hypoxia of the renal tubular epithelium. Like other cell types, endothelial cells respond to low oxygen tension by multiple hypoxic signaling mechanisms. Key mediators of adaptation to hypoxia are hypoxia-inducible factors (HIF)-1 and -2, transcription factors whose activity is negatively regulated by prolyl-hydroxylase domain proteins 1 to 3 (PHD1 to PHD3). The PHD/HIF axis controls several processes determining injury outcome, including ATP generation, cell survival, proliferation, and angiogenesis. Here, we discuss recent advances in our understanding of the endothelial-derived PHD/HIF signaling and its effects on postischemic AKI.
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Affiliation(s)
- Ratnakar Tiwari
- Department of Medicine and Feinberg Cardiovascular and Renal Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Pinelopi P. Kapitsinou
- Department of Medicine and Feinberg Cardiovascular and Renal Research Institute, Northwestern University Feinberg School of Medicine, Chicago, IL.,Address correspondence and Lead contact: Dr. Pinelopi P. Kapitsinou, Division of Nephrology and Feinberg Cardiovascular and Renal Research Institute, Feinberg School of Medicine, Northwestern University, 303 East Superior Street, SQBRC 8-408, Chicago, IL 60611.
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18
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Abstract
The pharmacokinetics of roxadustat are well characterized, with an apparent volume of distribution after oral administration of 22–57 L, apparent clearance of 1.2–2.65 L/h, and renal clearance of 0.030–0.026 L/h in healthy volunteers; the elimination half-life is 9.6–16 h. Plasma binding is 99% and the fraction eliminated by hemodialysis is 2.34%. As an interpretation of the pharmacodynamics of roxadustat, we proposed a concept with a hypothetical cascade of two subsequent effects, first on erythropoetin (EPO) and second on hemoglobin (delta Hb). The primary effect on EPO is observed within a few hours after roxadustat administration and can be modeled using the sigmoidal Hill equation. The concentration at half-maximum effect can be inferred at 10–36 µg/mL, the Hill coefficient at 3.3, and the effect bisection time at 10–17 h, corresponding to EPO half-life. The subsequent effect on hemoglobin (delta Hb) is observed after several weeks and can be interpreted as an irreversible, dose proportional, unsaturable effect, continuing in agreement with the lifespan of red blood cells of 63–112 days.
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19
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Faivre A, Verissimo T, Auwerx H, Legouis D, de Seigneux S. Tubular Cell Glucose Metabolism Shift During Acute and Chronic Injuries. Front Med (Lausanne) 2021; 8:742072. [PMID: 34778303 PMCID: PMC8585753 DOI: 10.3389/fmed.2021.742072] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/11/2021] [Indexed: 12/28/2022] Open
Abstract
Acute and chronic kidney disease are responsible for large healthcare costs worldwide. During injury, kidney metabolism undergoes profound modifications in order to adapt to oxygen and nutrient shortage. Several studies highlighted recently the importance of these metabolic adaptations in acute as well as in chronic phases of renal disease, with a potential deleterious effect on fibrosis progression. Until recently, glucose metabolism in the kidney has been poorly studied, even though the kidney has the capacity to use and produce glucose, depending on the segment of the nephron. During physiology, renal proximal tubular cells use the beta-oxidation of fatty acid to generate large amounts of energy, and can also produce glucose through gluconeogenesis. In acute kidney injury, proximal tubular cells metabolism undergo a metabolic shift, shifting away from beta-oxidation of fatty acids and gluconeogenesis toward glycolysis. In chronic kidney disease, the loss of fatty acid oxidation is also well-described, and data about glucose metabolism are emerging. We here review the modifications of proximal tubular cells glucose metabolism during acute and chronic kidney disease and their potential consequences, as well as the potential therapeutic implications.
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Affiliation(s)
- Anna Faivre
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Thomas Verissimo
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Hannah Auwerx
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - David Legouis
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland.,Intensive Care Unit, Department of Acute Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Sophie de Seigneux
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
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20
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Jensen BL. Get use to the -dustats: Roxadustat and molidustat, members of the hypoxia-inducible factor (HIF) prolyl hydroxylase (PHD) inhibitor drug class promote kidney function, perfusion and oxygenation in rats through nitric oxide. Acta Physiol (Oxf) 2021; 233:e13706. [PMID: 34143560 DOI: 10.1111/apha.13706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Boye L. Jensen
- Department of Cardiovascular and Renal Research Institute of Molecular Medicine University of Southern Denmark Odense Denmark
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21
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A small-molecule inhibitor of hypoxia-inducible factor prolyl hydroxylase improves obesity, nephropathy and cardiomyopathy in obese ZSF1 rats. PLoS One 2021; 16:e0255022. [PMID: 34339435 PMCID: PMC8328318 DOI: 10.1371/journal.pone.0255022] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
Prolyl hydroxylase (PH) enzymes control the degradation of hypoxia-inducible factor (HIF), a transcription factor known to regulate erythropoiesis, angiogenesis, glucose metabolism, cell proliferation, and apoptosis. HIF-PH inhibitors (HIF-PHIs) correct anemia in patients with renal disease and in animal models of anemia and kidney disease. However, the effects of HIF-PHIs on comorbidities associated with kidney disease remain largely unknown. We evaluated the effects of the HIF-PHI FG-2216 in obese ZSF1 (Ob-ZSF1) rats, an established model of kidney failure with metabolic syndrome. Following unilateral nephrectomy (Nx) at 8 weeks of age, rats were treated with 40 mg/kg FG-2216 or vehicle by oral gavage three times per week for up to 18 weeks. FG-2216 corrected blood hemoglobin levels and improved kidney function and histopathology in Nx-Ob-ZSF1 rats by increasing the glomerular filtration rate, decreasing proteinuria, and reducing peritubular fibrosis, tubular damage, glomerulosclerosis and mesangial expansion. FG-2216 increased renal glucose excretion and decreased body weight, fat pad weight, and serum cholesterol in Nx-Ob-ZSF1 rats. Additionally, FG-2216 corrected hypertension, improved diastolic and systolic heart function, and reduced cardiac hypertrophy and fibrosis. In conclusion, the HIF-PHI FG-2216 improved renal and cardiovascular outcomes, and reduced obesity in a rat model of kidney disease with metabolic syndrome. Thus, in addition to correcting anemia, HIF-PHIs may provide renal and cardiac protection to patients suffering from kidney disease with metabolic syndrome.
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22
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Wu M, Chen W, Miao M, Jin Q, Zhang S, Bai M, Fan J, Zhang Y, Zhang A, Jia Z, Huang S. Anti-anemia drug FG4592 retards the AKI-to-CKD transition by improving vascular regeneration and antioxidative capability. Clin Sci (Lond) 2021; 135:1707-1726. [PMID: 34255035 DOI: 10.1042/cs20210100] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 11/17/2022]
Abstract
Acute kidney injury (AKI) is a known risk factor for the development of chronic kidney disease (CKD), with no satisfactory strategy to prevent the progression of AKI to CKD. Damage to the renal vascular system and subsequent hypoxia are common contributors to both AKI and CKD. Hypoxia-inducible factor (HIF) is reported to protect the kidney from acute ischemic damage and a novel HIF stabilizer, FG4592 (Roxadustat), has become available in the clinic as an anti-anemia drug. However, the role of FG4592 in the AKI-to-CKD transition remains elusive. In the present study, we investigated the role of FG4592 in the AKI-to-CKD transition induced by unilateral kidney ischemia-reperfusion (UIR). The results showed that FG4592, given to mice 3 days after UIR, markedly alleviated kidney fibrosis and enhanced renal vascular regeneration, possibly via activating the HIF-1α/vascular endothelial growth factor A (VEGFA)/VEGF receptor 1 (VEGFR1) signaling pathway and driving the expression of the endogenous antioxidant superoxide dismutase 2 (SOD2). In accordance with the improved renal vascular regeneration and redox balance, the metabolic disorders of the UIR mice kidneys were also attenuated by treatment with FG4592. However, the inflammatory response in the UIR kidneys was not affected significantly by FG4592. Importantly, in the kidneys of CKD patients, we also observed enhanced HIF-1α expression which was positively correlated with the renal levels of VEGFA and SOD2. Together, these findings demonstrated the therapeutic effect of the anti-anemia drug FG4592 in preventing the AKI-to-CKD transition related to ischemia and the redox imbalance.
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Affiliation(s)
- Mengqiu Wu
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Weiyi Chen
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Mengqiu Miao
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Qianqian Jin
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Shengnan Zhang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Mi Bai
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Jiaojiao Fan
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Yue Zhang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Aihua Zhang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Zhanjun Jia
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
| | - Songming Huang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing 210008, China
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
- Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing 210029, China
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23
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Shi Y, Chen G, Teng J. Network-Based Expression Analyses and Experimental Verifications Reveal the Involvement of STUB1 in Acute Kidney Injury. Front Mol Biosci 2021; 8:655361. [PMID: 34262937 PMCID: PMC8273177 DOI: 10.3389/fmolb.2021.655361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 06/07/2021] [Indexed: 12/15/2022] Open
Abstract
Acute kidney injury (AKI) is a severe and frequently observed condition associated with high morbidity and mortality. The molecular mechanisms underlying AKI have not been elucidated due to the complexity of the pathophysiological processes. Thus, we investigated the key biological molecules contributing to AKI based on the transcriptome profile. We analyzed the RNA sequencing data from 39 native human renal biopsy samples and 9 reference nephrectomies from the Gene Expression Omnibus (GEO) database. The differentially expressed genes (DEGs) and Gene Ontology (GO) analysis revealed that various GO terms were dysregulated in AKI. Gene set enrichment analysis (GSEA) highlighted dysregulated pathways, including "DNA replication," "chemokine signaling pathway," and "metabolic pathways." Furthermore, the protein-to-protein interaction (PPI) networks of the DEGs were constructed, and the hub genes were identified using Cytoscape. Moreover, weighted gene co-expression network analysis (WGCNA) was performed to validate the DEGs in AKI-related modules. Subsequently, the upregulated hub genes STUB1, SOCS1, and VHL were validated as upregulated in human AKI and a mouse cisplatin-induced AKI model. Moreover, the biological functions of STUB1 were investigated in renal tubular epithelial cells. Cisplatin treatment increased STUB1 expression in a dose-dependent manner at both the mRNA and protein levels. Knockdown of STUB1 by siRNA increased the expression of proapoptotic Bax and cleaved caspase-3 while decreasing antiapoptotic Bcl-2. In addition, silencing STUB1 increased the apoptosis of HK-2 cells and the proinflammatory cytokine production of IL6, TNFα, and IL1β induced by cisplatin. These results indicated that STUB1 may contribute to the initiation and progression of AKI by inducing renal tubular epithelial cell apoptosis and renal inflammation.
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Affiliation(s)
- Yanting Shi
- Department of Nephrology, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Genwen Chen
- Department of Radiation Oncology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Teng
- Department of Nephrology, Xiamen Branch, Zhongshan Hospital, Fudan University, Shanghai, China.,Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China
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24
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Peired AJ, Antonelli G, Angelotti ML, Allinovi M, Guzzi F, Sisti A, Semeraro R, Conte C, Mazzinghi B, Nardi S, Melica ME, De Chiara L, Lazzeri E, Lasagni L, Lottini T, Landini S, Giglio S, Mari A, Di Maida F, Antonelli A, Porpiglia F, Schiavina R, Ficarra V, Facchiano D, Gacci M, Serni S, Carini M, Netto GJ, Roperto RM, Magi A, Christiansen CF, Rotondi M, Liapis H, Anders HJ, Minervini A, Raspollini MR, Romagnani P. Acute kidney injury promotes development of papillary renal cell adenoma and carcinoma from renal progenitor cells. Sci Transl Med 2021; 12:12/536/eaaw6003. [PMID: 32213630 DOI: 10.1126/scitranslmed.aaw6003] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 10/15/2019] [Accepted: 02/11/2020] [Indexed: 12/11/2022]
Abstract
Acute tissue injury causes DNA damage and repair processes involving increased cell mitosis and polyploidization, leading to cell function alterations that may potentially drive cancer development. Here, we show that acute kidney injury (AKI) increased the risk for papillary renal cell carcinoma (pRCC) development and tumor relapse in humans as confirmed by data collected from several single-center and multicentric studies. Lineage tracing of tubular epithelial cells (TECs) after AKI induction and long-term follow-up in mice showed time-dependent onset of clonal papillary tumors in an adenoma-carcinoma sequence. Among AKI-related pathways, NOTCH1 overexpression in human pRCC associated with worse outcome and was specific for type 2 pRCC. Mice overexpressing NOTCH1 in TECs developed papillary adenomas and type 2 pRCCs, and AKI accelerated this process. Lineage tracing in mice identified single renal progenitors as the cell of origin of papillary tumors. Single-cell RNA sequencing showed that human renal progenitor transcriptome showed similarities to PT1, the putative cell of origin of human pRCC. Furthermore, NOTCH1 overexpression in cultured human renal progenitor cells induced tumor-like 3D growth. Thus, AKI can drive tumorigenesis from local tissue progenitor cells. In particular, we find that AKI promotes the development of pRCC from single progenitors through a classical adenoma-carcinoma sequence.
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Affiliation(s)
- Anna Julie Peired
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Giulia Antonelli
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Maria Lucia Angelotti
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Marco Allinovi
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy.,Nephrology, Dialysis and Transplantation Unit, Careggi University Hospital, Florence 50139, Italy
| | - Francesco Guzzi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Alessandro Sisti
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence 50139, Italy
| | - Roberto Semeraro
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Carolina Conte
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Benedetta Mazzinghi
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence 50139, Italy
| | - Sara Nardi
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence 50139, Italy
| | - Maria Elena Melica
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Letizia De Chiara
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence 50139, Italy
| | - Elena Lazzeri
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Laura Lasagni
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy.,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Tiziano Lottini
- Department of Experimental and Clinical Medicine, Section of Internal Medicine, University of Florence, Florence 50139, Italy
| | - Samuela Landini
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Sabrina Giglio
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | - Andrea Mari
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | - Fabrizio Di Maida
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | - Alessandro Antonelli
- Department of Urology, Spedali Civili Hospital, University of Brescia, Brescia 25123, Italy
| | - Francesco Porpiglia
- Department of Urology, University of Turin, San Luigi Gonzaga Hospital, Orbassano, Turin 10043, Italy
| | - Riccardo Schiavina
- Department of Urology, S. Orsola-Malpighi Hospital, University of Bologna, Bologna 40138, Italy
| | | | - Davide Facchiano
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | - Mauro Gacci
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | - Sergio Serni
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | - Marco Carini
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | - George J Netto
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Rosa Maria Roperto
- Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence 50139, Italy
| | - Alberto Magi
- Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy
| | | | - Mario Rotondi
- Unit of Internal Medicine and Endocrinology, ICS Maugeri I.R.C.C.S., Scientific Institute of Pavia, Pavia 28100, Italy
| | | | - Hans-Joachim Anders
- Division of Nephrology, Medizinische Klinik and Poliklinik IV, Klinikum der LMU München, Munich 80336, Germany
| | - Andrea Minervini
- Department of Urology, Careggi Hospital, University of Florence, Florence 50139, Italy
| | | | - Paola Romagnani
- Excellence Centre for Research, Transfer and High Education for the development of DE NOVO Therapies (DENOTHE), University of Florence, Florence 50139, Italy. .,Department of Experimental and Clinical Biomedical Sciences "Mario Serio," University of Florence, Florence 50139, Italy.,Nephrology and Dialysis Unit, Meyer Children's University Hospital, Florence 50139, Italy
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25
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Menez S, Ju W, Menon R, Moledina DG, Thiessen Philbrook H, McArthur E, Jia Y, Obeid W, Mansour SG, Koyner JL, Shlipak MG, Coca SG, Garg AX, Bomback AS, Kellum JA, Kretzler M, Parikh CR. Urinary EGF and MCP-1 and risk of CKD after cardiac surgery. JCI Insight 2021; 6:147464. [PMID: 33974569 PMCID: PMC8262289 DOI: 10.1172/jci.insight.147464] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/05/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Assessment of chronic kidney disease (CKD) risk after acute kidney injury (AKI) is based on limited markers primarily reflecting glomerular function. We evaluated markers of cell integrity (EGF) and inflammation (monocyte chemoattractant protein-1, MCP-1) for predicting long-term kidney outcomes after cardiac surgery. METHODS We measured EGF and MCP-1 in postoperative urine samples from 865 adults who underwent cardiac surgery at 2 sites in Canada and the United States and assessed EGF and MCP-1’s associations with the composite outcome of CKD incidence or progression. We used single-cell RNA-Seq (scRNA-Seq) of AKI patient biopsies to perform transcriptomic analysis of programs corregulated with the associated genes. RESULTS Over a median (IQR) follow-up of 5.8 (4.2–7.1) years, 266 (30.8%) patients developed the composite CKD outcome. Postoperatively, higher levels of urinary EGF were protective and higher levels of MCP-1 were associated with the composite CKD outcome (adjusted HR 0.83, 95% CI 0.73–0.95 and 1.10, 95% CI 1.00–1.21, respectively). Intrarenal scRNA-Seq transcriptomes in patients with AKI-defined cell populations revealed concordant changes in EGF and MCP-1 levels and underlying molecular processes associated with loss of EGF expression and gain of CCL2 (encoding MCP-1) expression. CONCLUSION Urinary EGF and MCP-1 were each independently associated with CKD after cardiac surgery. These markers may serve as noninvasive indicators of tubular damage, supported by tissue transcriptomes, and provide an opportunity for novel interventions in cardiac surgery. TRIAL REGISTRATION ClinicalTrials.gov NCT00774137. FUNDING The NIH funded the TRIBE-AKI Consortium and Kidney Precision Medicine Project. Yale O’Brien Kidney Center, American Heart Association, Patterson Trust Fund, Dr. Adam Linton Chair in Kidney Health Analytics, Canadian Institutes of Health Research, ICES, Ontario Ministry of Health and Long-Term Care, Academic Medical Organization of Southwestern Ontario, Schulich School of Medicine & Dentistry, Western University, Lawson Health Research Institute, Chan Zuckerberg Initiative Human Cell Atlas Kidney Seed Network.
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Affiliation(s)
- Steven Menez
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Wenjun Ju
- Division of Nephrology, Department of Medicine, and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Rajasree Menon
- Division of Nephrology, Department of Medicine, and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Dennis G Moledina
- Section of Nephrology and.,Clinical and Translational Research Accelerator, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Heather Thiessen Philbrook
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Yaqi Jia
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Wassim Obeid
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sherry G Mansour
- Section of Nephrology and.,Clinical and Translational Research Accelerator, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Jay L Koyner
- Section of Nephrology, Department of Medicine, University of Chicago, Chicago, Illinois, USA
| | - Michael G Shlipak
- Kidney Health Research Collaborative and Division of General Internal Medicine, San Francisco Veterans Affairs Medical Center, University of California San Francisco, San Francisco, California, USA
| | - Steven G Coca
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Amit X Garg
- ICES, Ontario, Canada.,Division of Nephrology, Department of Medicine, and.,Department of Epidemiology and Biostatistics, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | - Andrew S Bomback
- Division of Nephrology, Department of Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - John A Kellum
- The Center for Critical Care Nephrology, Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Matthias Kretzler
- Division of Nephrology, Department of Medicine, and Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA
| | - Chirag R Parikh
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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26
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Effect of zinc oxide nanoparticles and ferulic acid on renal ischemia/reperfusion injury: possible underlying mechanisms. Biomed Pharmacother 2021; 140:111686. [PMID: 34015581 DOI: 10.1016/j.biopha.2021.111686] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/25/2021] [Accepted: 04/29/2021] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES The present study examined the effects of ferulic acid (FA) and Zinc oxide nanoparticles (ZnO-NPs) and a combination of both on renal ischemia/reperfusion injury (IRI) in rats and their possible underlying mechanisms. METHODS two-hundreds male Sprague Dawley rats were randomly allocated into the 5 groups; i) sham group, ii) control (IRI) group (occlusion of the left renal pedicle for 45 min), iii) FA group as IRI group with FA (100 mg/Kg oral 24 hrs before ischemia), iv) ZnO-NPs group as IRI group with ZnO-NPs single 5 mg/Kg i.p. 2 hrs before ischemia and v) FA + ZnO-NPs group as IRI group with both FA and ZnO-NPs in the same previous doses. According to the reperfusion times, each group was further subdivided into 4 hr, 24 hr, 48 hr and 7 days reperfusion subgroups. RESULTS administration of either FA or ZnO-NPs caused significant improvement in the elevated serum creatinine and BUN and malondialdehyde (MDA) concentrations and expression of TNF-α, Bax, caspase-3 in kidney tissues with significant rise in the creatinine clearance, the activities of catalase (CAT) and superoxide dismutase (SOD) and the expression of HO-1, HIF-1α genes and proliferation marker (ki67) in kidney tissues compared to IRI group (p < 0.05). Moreover, a combination of both agents produced more significant improvement in the studied parameters than each agent did alone (p < 0.05). CONCLUSIONS Both FA and ZnO-NPs exerted cytoprotective effects against ischemic kidney injury and a combination of both exhibited more powerful renoprotective effect. This renoprotective effect might be due to suppression of oxidative stress, enhancement of cell proliferation (ki67), upregulation of antioxidant genes (Nrf2, HO-1 and HIF-1α) and downregulation of inflammatory cytokine (TNF-α) and apoptotic genes (caspase-3 and Bax).
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27
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Miao AF, Liang JX, Yao L, Han JL, Zhou LJ. Hypoxia-inducible factor prolyl hydroxylase inhibitor roxadustat (FG-4592) protects against renal ischemia/reperfusion injury by inhibiting inflammation. Ren Fail 2021; 43:803-810. [PMID: 33966598 PMCID: PMC8118507 DOI: 10.1080/0886022x.2021.1915801] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Hypoxia-induced inflammation is the critical pathological feature of acute kidney injury (AKI). Activation of hypoxia-inducible factor (HIF) signaling is considered as a central mechanism of body adapting to hypoxia. Hypoxia-inducible factor prolyl hydroxylase inhibitor FG-4592 (Roxadustat) is a first-in-class HIF stabilizer for the treatment of patients with renal anemia. The current study aimed to investigate whether FG-4592 could protect against ischemia/reperfusion (I/R)-induced kidney injury via inhibiting inflammation. Here, efficacy of FG-4592 was evaluated in a mice model of I/R-induced AKI. Interestingly, improved renal function and renal tubular injuries, combined with reduced kidney injury molecule-1 were observed in the mice with FG-4592 administration. Meanwhile, inflammation responses in FG-4592-treated mice were also strikingly attenuated, as evidenced by the decreased infiltration of macrophages and neutrophils and down-regulated expression of inflammatory cytokines. In vitro, FG-4592 treatment significantly protected the tubular epithelial cells against hypoxia-induced injury, with suppressed inflammation and cell injuries. In summary, FG-4592 treatment could protect against the I/R-induced kidney injury possibly through diminishing tubular cells injuries and suppression of sequence inflammatory responses. Thus, our findings definitely offered a clinical potential approach in treating AKI.
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Affiliation(s)
- A-Feng Miao
- Department of Nephrology, Taizhou People's Hospital, Fifth Affiliated Hospital to Nantong University, Taizhou, Jiangsu, China
| | - Jian-Xiang Liang
- Department of Ultrasonography, Weifang People's Hospital, Weifang, Shandong, China
| | - Lei Yao
- Department of Anesthesiology, Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Jun-Ling Han
- Clinical Laboratory, Taizhou People's Hospital, Fifth Affiliated Hospital to Nantong University, Taizhou, Jiangsu, China
| | - Li-Juan Zhou
- Department of Nephrology, Taizhou People's Hospital, Fifth Affiliated Hospital to Nantong University, Taizhou, Jiangsu, China
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28
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Kidney physiology and susceptibility to acute kidney injury: implications for renoprotection. Nat Rev Nephrol 2021; 17:335-349. [PMID: 33547418 DOI: 10.1038/s41581-021-00394-7] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2021] [Indexed: 01/30/2023]
Abstract
Kidney damage varies according to the primary insult. Different aetiologies of acute kidney injury (AKI), including kidney ischaemia, exposure to nephrotoxins, dehydration or sepsis, are associated with characteristic patterns of damage and changes in gene expression, which can provide insight into the mechanisms that lead to persistent structural and functional damage. Early morphological alterations are driven by a delicate balance between energy demand and oxygen supply, which varies considerably in different regions of the kidney. The functional heterogeneity of the various nephron segments is reflected in their use of different metabolic pathways. AKI is often linked to defects in kidney oxygen supply, and some nephron segments might not be able to shift to anaerobic metabolism under low oxygen conditions or might have remarkably low basal oxygen levels, which enhances their vulnerability to damage. Here, we discuss why specific kidney regions are at particular risk of injury and how this information might help to delineate novel routes for mitigating injury and avoiding permanent damage. We suggest that the physiological heterogeneity of the kidney should be taken into account when exploring novel renoprotective strategies, such as improvement of kidney tissue oxygenation, stimulation of hypoxia signalling pathways and modulation of cellular energy metabolism.
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29
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Jonasch E, Walker CL, Rathmell WK. Clear cell renal cell carcinoma ontogeny and mechanisms of lethality. Nat Rev Nephrol 2021; 17:245-261. [PMID: 33144689 PMCID: PMC8172121 DOI: 10.1038/s41581-020-00359-2] [Citation(s) in RCA: 282] [Impact Index Per Article: 94.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/22/2020] [Indexed: 02/07/2023]
Abstract
The molecular features that define clear cell renal cell carcinoma (ccRCC) initiation and progression are being increasingly defined. The TRACERx Renal studies and others that have described the interaction between tumour genomics and remodelling of the tumour microenvironment provide important new insights into the molecular drivers underlying ccRCC ontogeny and progression. Our understanding of common genomic and chromosomal copy number abnormalities in ccRCC, including chromosome 3p loss, provides a mechanistic framework with which to organize these abnormalities into those that drive tumour initiation events, those that drive tumour progression and those that confer lethality. Truncal mutations in ccRCC, including those in VHL, SET2, PBRM1 and BAP1, may engender genomic instability and promote defects in DNA repair pathways. The molecular features that arise from these defects enable categorization of ccRCC into clinically and therapeutically relevant subtypes. Consideration of the interaction of these subtypes with the tumour microenvironment reveals that specific mutations seem to modulate immune cell populations in ccRCC tumours. These findings present opportunities for disease prevention, early detection, prognostication and treatment.
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Affiliation(s)
- Eric Jonasch
- Department of Genitourinary Medical Oncology, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Cheryl Lyn Walker
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, USA
| | - W Kimryn Rathmell
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
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30
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Terker AS, Sasaki K, Arroyo JP, Niu A, Wang S, Fan X, Zhang Y, Nwosisi S, Zhang MZ, Harris RC. Activation of hypoxia-sensing pathways promotes renal ischemic preconditioning following myocardial infarction. Am J Physiol Renal Physiol 2021; 320:F569-F577. [PMID: 33522414 DOI: 10.1152/ajprenal.00476.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Ischemic heart disease is the leading cause of death worldwide and is frequently comorbid with chronic kidney disease. Physiological communication is known to occur between the heart and the kidney. Although primary dysfunction in either organ can induce dysfunction in the other, a clinical entity known as cardiorenal syndrome, mechanistic details are lacking. Here, we used a model of experimental myocardial infarction (MI) to test effects of chronic cardiac ischemia on acute and chronic kidney injury. Surprisingly, chronic cardiac damage protected animals from subsequent acute ischemic renal injury, an effect that was accompanied by evidence of chronic kidney hypoxia. The protection observed post-MI was similar to protection observed in a separate group of healthy animals housed in ambient hypoxic conditions prior to kidney injury, suggesting a common mechanism. There was evidence that chronic cardiac injury activates renal hypoxia-sensing pathways. Increased renal abundance of several glycolytic enzymes following MI suggested that a shift toward glycolysis may confer renal ischemic preconditioning. In contrast, effects on chronic renal injury followed a different pattern, with post-MI animals displaying worsened chronic renal injury and fibrosis. These data show that although chronic cardiac injury following MI protected against acute kidney injury via activation of hypoxia-sensing pathways, it worsened chronic kidney injury. The results further our understanding of cardiorenal signaling mechanisms and have implications for the treatment of heart failure patients with associated renal disease.NEW & NOTEWORTHY Experimental myocardial infarction (MI) protects from subsequent ischemic acute kidney injury but worsens chronic kidney injury. Observed protection from ischemic acute kidney injury after MI was accompanied by chronic kidney hypoxia and increased renal abundance of hypoxia-inducible transcripts. These data support the idea that MI confers protection from renal ischemic injury via chronic renal hypoxia and activation of downstream hypoxia-inducible signaling pathways.
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Affiliation(s)
- Andrew S Terker
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Kensuke Sasaki
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Juan Pablo Arroyo
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Aolei Niu
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Suwan Wang
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Xiaofeng Fan
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Yahua Zhang
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Sochinweichi Nwosisi
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Ming-Zhi Zhang
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee
| | - Raymond C Harris
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee.,Vanderbilt Center for Kidney Disease, Nashville, Tennessee.,Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
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31
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Schaub JA, Venkatachalam MA, Weinberg JM. Proximal Tubular Oxidative Metabolism in Acute Kidney Injury and the Transition to CKD. KIDNEY360 2020; 2:355-364. [PMID: 35373028 PMCID: PMC8740982 DOI: 10.34067/kid.0004772020] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/22/2020] [Indexed: 02/04/2023]
Abstract
The proximal tubule relies on oxidative mitochondrial metabolism to meet its energy needs and has limited capacity for glycolysis, which makes it uniquely susceptible to damage during AKI, especially after ischemia and anoxia. Under these conditions, mitochondrial ATP production is initially decreased by several mechanisms, including fatty acid-induced uncoupling and inhibition of respiration related to changes in the shape and volume of mitochondria. Glycolysis is initially insufficient as a source of ATP to protect the cells and mitochondrial function, but supplementation of tricarboxylic acid cycle intermediates augments anaerobic ATP production, and improves recovery of mitochondrial oxidative metabolism. Incomplete recovery is characterized by defects of respiratory enzymes and lipid metabolism. During the transition to CKD, tubular cells atrophy but maintain high expression of glycolytic enzymes, and there is decreased fatty acid oxidation. These metabolic changes may be amenable to a number of therapeutic interventions.
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Affiliation(s)
- Jennifer A. Schaub
- Nephrology Division, Department of Medicine, University of Michigan, Ann Arbor, Michigan
| | | | - Joel M. Weinberg
- Nephrology Division, Department of Medicine, University of Michigan, Ann Arbor, Michigan
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32
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Hypoxia-inducible factor prolyl hydroxylase inhibitor in the treatment of anemia in chronic kidney disease. Curr Opin Nephrol Hypertens 2020; 29:414-422. [DOI: 10.1097/mnh.0000000000000617] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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33
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Qiu Y, Huang X, He W. The regulatory role of HIF-1 in tubular epithelial cells in response to kidney injury. Histol Histopathol 2019; 35:321-330. [PMID: 31691948 DOI: 10.14670/hh-18-182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The high sensitivity to changes in oxygen tension makes kidney vulnerable to hypoxia. Both acute kidney injury and chronic kidney disease are almost always accompanied by hypoxia. Tubular epithelial cells (TECs), the dominant intrinsic cells in kidney tissue, are believed to be not only a victim in the pathological process of various kidney diseases, but also a major contributor to kidney damage. Hypoxia inducible factor-1 (HIF-1) is the main regulator of adaptive response of cells to hypoxia. Under various clinical and experimental kidney disease conditions, HIF-1 plays a pivotal role in modulating multiple cellular processes in TECs, including apoptosis, autophagy, inflammation, metabolic pattern alteration, and cell cycle arrest. A comprehensive understanding of the mechanisms by which HIF-1 regulates these cellular processes in TECs may help identify potential therapeutic targets to improve the outcome of acute kidney injury and delay the progression of chronic kidney disease.
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Affiliation(s)
- Yumei Qiu
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xiaowen Huang
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Weichun He
- Center for Kidney Disease, Second Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu, China.
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34
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Scherberich JE, Gruber R, Nockher WA, Christensen EI, Schmitt H, Herbst V, Block M, Kaden J, Schlumberger W. Serum uromodulin-a marker of kidney function and renal parenchymal integrity. Nephrol Dial Transplant 2019; 33:284-295. [PMID: 28206617 PMCID: PMC5837243 DOI: 10.1093/ndt/gfw422] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2016] [Accepted: 11/07/2016] [Indexed: 11/12/2022] Open
Abstract
Background An ELISA to analyse uromodulin in human serum (sUmod) was developed, validated and tested for clinical applications. Methods We assessed sUmod, a very stable antigen, in controls, patients with chronic kidney disease (CKD) stages 1-5, persons with autoimmune kidney diseases and recipients of a renal allograft by ELISA. Results Median sUmod in 190 blood donors was 207 ng/mL (women: men, median 230 versus 188 ng/mL, P = 0.006). sUmod levels in 443 children were 193 ng/mL (median). sUmod was correlated with cystatin C (rs = -0.862), creatinine (rs = -0.802), blood urea nitrogen (BUN) (rs = -0.645) and estimated glomerular filtration rate (eGFR)-cystatin C (rs = 0.862). sUmod was lower in systemic lupus erythematosus-nephritis (median 101 ng/mL), phospholipase-A2 receptor- positive glomerulonephritis (median 83 ng/mL) and anti-glomerular basement membrane positive pulmorenal syndromes (median 37 ng/mL). Declining sUmod concentrations paralleled the loss of kidney function in 165 patients with CKD stages 1-5 with prominent changes in sUmod within the 'creatinine blind range' (71-106 µmol/L). Receiver-operating characteristic analysis between non-CKD and CKD-1 was superior for sUmod (AUC 0.90) compared with eGFR (AUC 0.39), cystatin C (AUC 0.39) and creatinine (AUC 0.27). sUmod rapidly recovered from 0 to 62 ng/mL (median) after renal transplantation in cases with immediate graft function and remained low in delayed graft function (21 ng/mL, median; day 5-9: relative risk 1.5-2.9, odds ratio 1.5-6.4). Immunogold labelling disclosed that Umod is transferred within cytoplasmic vesicles to both the apical and basolateral plasma membrane. Umod revealed a disturbed intracellular location in kidney injury. Conclusions We conclude that sUmod is a novel sensitive kidney-specific biomarker linked to the structural integrity of the distal nephron and to renal function.
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Affiliation(s)
- Jürgen E Scherberich
- Klinikum München-Harlaching, Teaching Hospital of the Ludwig-Maximilians-University Munich, Munich, Germany
| | - Rudolf Gruber
- Krankenhaus Barmherzige Brüder, Teaching Hospital of the University of Regensburg, Regensburg, Germany
| | | | | | | | - Victor Herbst
- Institute for Experimental Immunology, Euroimmun AG, Lübeck, Germany
| | - Matthias Block
- Institute for Experimental Immunology, Euroimmun AG, Lübeck, Germany
| | - Jürgen Kaden
- Kidney Transplant Centre, Municipal Hospital Berlin-Friedrichshain, Teaching Hospital of the Charité Berlin, Berlin, Germany
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35
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Schley G, Klanke B, Kalucka J, Schatz V, Daniel C, Mayer M, Goppelt-Struebe M, Herrmann M, Thorsteinsdottir M, Palsson R, Beneke A, Katschinski DM, Burzlaff N, Eckardt KU, Weidemann A, Jantsch J, Willam C. Mononuclear phagocytes orchestrate prolyl hydroxylase inhibition-mediated renoprotection in chronic tubulointerstitial nephritis. Kidney Int 2019; 96:378-396. [DOI: 10.1016/j.kint.2019.02.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 01/14/2019] [Accepted: 02/14/2019] [Indexed: 12/22/2022]
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36
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Li L, Kang H, Zhang Q, D'Agati VD, Al-Awqati Q, Lin F. FoxO3 activation in hypoxic tubules prevents chronic kidney disease. J Clin Invest 2019; 129:2374-2389. [PMID: 30912765 DOI: 10.1172/jci122256] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Acute kidney injury (AKI) can lead to chronic kidney disease (CKD) if injury is severe and/or repair is incomplete. However, the pathogenesis of CKD following renal ischemic injury is not fully understood. Capillary rarefaction and tubular hypoxia are common findings during the AKI to CKD transition. We investigated the tubular stress response to hypoxia and demonstrated that a stress responsive transcription factor, FoxO3, was regulated by prolyl hydroxylase. Hypoxia inhibited FoxO3 prolyl hydroxylation and FoxO3 degradation, thus leading to FoxO3 accumulation and activation in tubular cells. Hypoxia-activated Hif-1α contributed to FoxO3 activation and functioned to protect kidneys, as tubular deletion of Hif-1α decreased hypoxia-induced FoxO3 activation, and resulted in more severe tubular injury and interstitial fibrosis following ischemic injury. Strikingly, tubular deletion of FoxO3 during the AKI to CKD transition aggravated renal structural and functional damage leading to a more profound CKD phenotype. We showed that tubular deletion of FoxO3 resulted in decreased autophagic response and increased oxidative injury, which may explain renal protection by FoxO3. Our study indicates that in the hypoxic kidney, stress responsive transcription factors can be activated for adaptions to counteract hypoxic insults, thus attenuating CKD development.
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Affiliation(s)
- Ling Li
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Huimin Kang
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA.,Department of Pediatrics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Qing Zhang
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, North Carolina, USA
| | | | - Qais Al-Awqati
- Department of Internal Medicine, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
| | - Fangming Lin
- Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
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37
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Kerforne T, Allain G, Giraud S, Bon D, Ameteau V, Couturier P, Hebrard W, Danion J, Goujon JM, Thuillier R, Hauet T, Barrou B, Jayle C. Defining the optimal duration for normothermic regional perfusion in the kidney donor: A porcine preclinical study. Am J Transplant 2019; 19:737-751. [PMID: 30091857 DOI: 10.1111/ajt.15063] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 01/25/2023]
Abstract
Kidneys from donation after circulatory death (DCD) are highly sensitive to ischemia-reperfusion injury and thus require careful reconditioning, such as normothermic regional perfusion (NRP). However, the optimal NRP protocol remains to be characterized. NRP was modeled in a DCD porcine model (30 minutes of cardiac arrest) for 2, 4, or 6 hours compared to a control group (No-NRP); kidneys were machine-preserved and allotransplanted. NRP appeared to permit recovery from warm ischemia, possibly due to an increased expression of HIF1α-dependent survival pathway. At 2 hours, blood levels of ischemic injury biomarkers increased: creatinine, lactate/pyruvate ratio, LDH, AST, NGAL, KIM-1, CD40 ligand, and soluble-tissue-factor. All these markers then decreased with time; however, AST, NGAL, and KIM-1 increased again at 6 hours. Hemoglobin and platelets decreased at 6 hours, after which the procedure became difficult to maintain. Regarding inflammation, active tissue-factor, cleaved PAR-2 and MCP-1 increased by 4-6 hours, but not TNF-α and iNOS. Compared to No-NRP, NRP kidneys showed lower resistance during hypothermic machine perfusion (HMP), likely associated with pe-NRP eNOS activation. Kidneys transplanted after 4 and 6 hours of NRP showed better function and outcome, compared to No-NRP. In conclusion, our results confirm the mechanistic benefits of NRP and highlight 4 hours as its optimal duration, after which injury markers appear.
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Affiliation(s)
- Thomas Kerforne
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,Anesthesia and Intensive Care Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France
| | - Geraldine Allain
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,CardioVascular Surgery Division, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France
| | - Sebastien Giraud
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,Biochemistry Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France
| | - Delphine Bon
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France
| | - Virginie Ameteau
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France
| | - Pierre Couturier
- INSERM U1082, (IRTOMIT), Poitiers, France.,Biochemistry Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France.,IBiSA 'plate-forme MOdélisation Préclinique - Innovations Chirurgicale et Technologique (MOPICT)', Domaine Expérimental du Magneraud, Surgères, France
| | - William Hebrard
- Unité expérimentale Génétique, Expérimentations et systèmes innovants (GENESI), INRA, Domaine Expérimental du Magneraud, Surgères, France
| | - Jerome Danion
- INSERM U1082, (IRTOMIT), Poitiers, France.,Visceral Surgery Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France
| | - Jean-Michel Goujon
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,Pathology Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France
| | - Raphael Thuillier
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,Biochemistry Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France
| | - Thierry Hauet
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,Biochemistry Department, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France.,IBiSA 'plate-forme MOdélisation Préclinique - Innovations Chirurgicale et Technologique (MOPICT)', Domaine Expérimental du Magneraud, Surgères, France.,FHU SUPORT 'SUrvival oPtimization in ORgan Transplantation', Poitiers, France
| | - Benoit Barrou
- INSERM U1082, (IRTOMIT), Poitiers, France.,Service d'Urologie et de transplantation rénale, AP-HP, GH Pitié-Salpêtrière, Paris, France.,Pierre and Marie Curie Paris VI University, Paris, France
| | - Christophe Jayle
- INSERM U1082, (IRTOMIT), Poitiers, France.,Faculty of Medicine and Pharmacy, University of Poitiers, Poitiers, France.,CardioVascular Surgery Division, Poitiers Regional and Academic Teaching Hospital Center, Poitiers, France.,IBiSA 'plate-forme MOdélisation Préclinique - Innovations Chirurgicale et Technologique (MOPICT)', Domaine Expérimental du Magneraud, Surgères, France
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Zhou Q, Gong X, Kuang G, Jiang R, Xie T, Tie H, Chen X, Li K, Wan J, Wang B. Ferulic Acid Protected from Kidney Ischemia Reperfusion Injury in Mice: Possible Mechanism Through Increasing Adenosine Generation via HIF-1α. Inflammation 2019; 41:2068-2078. [PMID: 30143933 DOI: 10.1007/s10753-018-0850-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ferulic acid (FA), derived from fruits and vegetables, is well-known as a potent antioxidant of scavenging free radicals. However, the role and underlying mechanism of FA on kidney ischemia reperfusion (I/R) injury are limited. Here, we explored the effects of FA on kidney I/R injury. The kidney I/R injury models were carried out by clamping bilateral pedicles for 35 min followed by reperfusion for 24 h. Mice were orally pretreated with different doses of FA for three times 24 h before I/R. The renal function was assessed by serum creatine (Scr) and blood urea nitrogen (BUN). Kidney histology was examined by hematoxylin and eosin (HE) staining and terminal deoxynucleotidly transferased UTP nick-end labeling (TUNEL) assay. Proinflammatory cytokines, caspase-3 activity, adenosine generation, adenosine signaling molecules, and hypoxia inducible factor-1 alpha (HIF-1α) were also detected, respectively. The siHIF-1α adenovirus vectors were in vivo used to inhibit the expression of HIF-1α. The results showed that FA significantly attenuated kidney damage in renal I/R-operated mice as indicated by reducing levels of Scr and BUN, ameliorating renal pathological structural changes, and tubular cells apoptosis. Moreover, FA pretreatment inhibited I/R-induced renal proinflammatory cytokines and neutrophils recruitment. Interestingly, the levels of HIF-α, CD39, and CD73 mRNA and protein as well as adenosine production were all significantly increased after FA pretreatment in the kidney of I/R-performed mice, and inhibiting HIF-α expression using siRNA abolished this protection of FA on I/R-induced acute kidney injury as evidenced by more severe renal damage and reduced adenosine production. Our findings indicated that FA protected against kidney I/R injury by reducing apoptosis, alleviating inflammation, increasing adenosine generation, and upregulating CD39 and CD73 expression, which might be mediated by HIF-1α.
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Affiliation(s)
- Qin Zhou
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
- Department of Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Xia Gong
- Department of Anatomy, Chongqing Medical University, Chongqing, 400016, China
| | - Ge Kuang
- Department of Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Rong Jiang
- Laboratory of Stem Cell and Tissue Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Tianjun Xie
- Department of Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - HongTao Tie
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - XiaHong Chen
- Department of Pharmacology, Chongqing Medical University, Chongqing, 400016, China
| | - Ke Li
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - JingYuan Wan
- Department of Pharmacology, Chongqing Medical University, Chongqing, 400016, China.
| | - Bin Wang
- Department of Anesthesiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
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39
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Kerforne T, Favreau F, Khalifeh T, Maiga S, Allain G, Thierry A, Dierick M, Baulier E, Steichen C, Hauet T. Hypercholesterolemia-induced increase in plasma oxidized LDL abrogated pro angiogenic response in kidney grafts. J Transl Med 2019; 17:26. [PMID: 30642356 PMCID: PMC6332834 DOI: 10.1186/s12967-018-1764-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/31/2018] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Renal transplantation is increasingly associated with the presence of comorbidity factors such as dyslipidemia which could influence the graft outcome. We hypothesized that hypercholesterolemia could affect vascular repair processes and promote post-transplant renal vascular remodeling through the over-expression of the anti-angiogenic thrombospondin-1 interacting with vascular endothelial growth factor-A levels. METHODS We tested this hypothesis in vitro, in vivo and in a human cohort using (1) endothelial cells; (2) kidney auto-transplanted pig subjected (n = 5) or not (n = 6) to a diet enriched in cholesterol and (3) a renal transplanted patient cohort (16 patients). RESULTS Cells exposed to oxidized LDL showed reduced proliferation and an increased expression of thrombospondin-1. In pigs, 3 months after transplantation of kidney grafts, we observed a deregulation of the hypoxia inducible factor 1a-vascular endothelial growth factor-A axis induced in cholesterol-enriched diet animals concomitant with an overexpression of thrombospondin-1 and a decrease in cortical microvessel density promoting vascular remodeling. In patients, hypercholesterolemia was associated with decreased vascular endothelial growth factor-A plasma levels during early follow up after renal transplantation and increased chronic graft dysfunction. CONCLUSIONS These results support a potential mechanism through which a high fat-diet impedes vascular repair in kidney graft and suggest the value of controlling cholesterolemia in recipient even at the early stage of renal transplantation.
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Affiliation(s)
- Thomas Kerforne
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Service d’Anesthésie-Réanimation, CHU de Poitiers, 86000 Poitiers, France
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86000 Poitiers, France
| | - Frédéric Favreau
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Faculté de Médecine, EA 6309 “Maintenance Myélinique et Neuropathies Périphériques», Université de Limoges, 87000 Limoges, France
- Laboratoire de Biochimie et Génétique Moléculaire, CHU de Limoges, 87000 Limoges, France
| | - Tackwa Khalifeh
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Service Medico-Chirurgical de Pediatrie, CHU de Poitiers, 86000 Poitiers, France
| | - Souleymane Maiga
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
| | - Geraldine Allain
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86000 Poitiers, France
- Service de Chirurgie Cardio-Thoracique, CHU de Poitiers, 86000 Poitiers, France
| | - Antoine Thierry
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86000 Poitiers, France
- Service de Néphrologie et Transplantation, CHU de Poitiers, 86000 Poitiers, France
| | - Manuel Dierick
- UGCT-Department of Physics and Astronomy, Faculty of Sciences, Ghent University, Proeftuinstraat 86, 9000 Ghent, Belgium
| | - Edouard Baulier
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86000 Poitiers, France
- Service de Biochimie, CHU de Poitiers, Poitiers, 86000 France
| | - Clara Steichen
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86000 Poitiers, France
| | - Thierry Hauet
- INSERM U1082 IRTOMIT, 2 rue de la Milétrie, CS90577, 86000 Poitiers, France
- Faculté de Médecine et de Pharmacie, Université de Poitiers, 86000 Poitiers, France
- Service de Biochimie, CHU de Poitiers, Poitiers, 86000 France
- IBiSA ‘Plate-Forme MOdélisation Préclinique-Innovations Chirurgicale et Technologique (MOPICT)’, Domaine Expérimental du Magneraud, 17700 Surgères, France
- FHU SUPORT ‘SUrvival oPtimization in ORgan Transplantation’, 86000 Poitiers, France
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Schreiber R, Buchholz B, Kraus A, Schley G, Scholz J, Ousingsawat J, Kunzelmann K. Lipid Peroxidation Drives Renal Cyst Growth In Vitro through Activation of TMEM16A. J Am Soc Nephrol 2019; 30:228-242. [PMID: 30606785 DOI: 10.1681/asn.2018010039] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 11/19/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Transepithelial chloride- secretion, through the chloride channels cystic fibrosis transmembrane conductance regulator (CFTR) and TMEM16A (anoctamin 1), drives cyst enlargement in polycystic kidney disease (PKD). Polycystic kidneys are hypoxic, and oxidative stress activates TMEM16A. However, mechanisms for channel activation in PKD remain obscure. METHODS Using tissue samples from patients with autosomal dominant PKD, embryonic kidney cultures, and an MDCK in vitro cyst model, we assessed peroxidation of plasma membrane phospholipids in human and mouse polycystic kidneys. We also used electrophysiologic Ussing chamber and patch clamp experiments to analyze activation of TMEM16A and growth of renal cysts. RESULTS Peroxidation of phospholipids in human and mouse kidneys as well as MDCK cysts in vitro is probably due to enhanced levels of reactive oxygen species. Lipid peroxidation correlated with increased cyst volume as shown in renal cultures and MDCK cysts in three-dimensional cultures. Reactive oxygen species and lipid peroxidation strongly activated TMEM16A, leading to depletion of calcium ion stores and store-operated calcium influx. Activation of TMEM16A- and CFTR-dependent chloride secretion strongly augmented cyst growth. Exposure to scavengers of reactive oxygen species, such as glutathione, coenzyme Q10, or idebenone (a synthetic coenzyme Q10 homolog), as well as inhibition of oxidative lipid damage by ferrostatin-1 largely reduced activation of TMEM16A. Inhibition of TMEM16A reduced proliferation and fluid secretion in vitro. CONCLUSIONS These findings indicate that activation of TMEM16A by lipid peroxidation drives growth of renal cysts. We propose direct inhibition of TMEM16A or inhibition of lipid peroxidation as potentially powerful therapeutic approaches to delay cyst development in PKD.
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Affiliation(s)
- Rainer Schreiber
- Department of Physiology, University of Regensburg, Regensburg, Germany; and
| | - Björn Buchholz
- Department of Nephrology and Hypertension, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Andre Kraus
- Department of Nephrology and Hypertension, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Gunnar Schley
- Department of Nephrology and Hypertension, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Julia Scholz
- Department of Nephrology and Hypertension, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | | | - Karl Kunzelmann
- Department of Physiology, University of Regensburg, Regensburg, Germany; and
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Kraus A, Peters DJM, Klanke B, Weidemann A, Willam C, Schley G, Kunzelmann K, Eckardt KU, Buchholz B. HIF-1α promotes cyst progression in a mouse model of autosomal dominant polycystic kidney disease. Kidney Int 2018; 94:887-899. [PMID: 30173898 DOI: 10.1016/j.kint.2018.06.008] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 06/01/2018] [Accepted: 06/07/2018] [Indexed: 11/29/2022]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is mainly caused by mutations of the PKD1 gene and characterized by growth of bilateral renal cysts. Cyst growth is accompanied by regional hypoxia and induction of hypoxia-inducible factor (HIF)-1α in cyst-lining epithelial cells. To determine the relevance of HIF-1α for cyst growth in vivo we used an inducible kidney epithelium-specific knockout mouse to delete Pkd1 at postnatal day 20 or 35 to induce polycystic kidney disease of different severity and analyzed the effects of Hif-1α co-deletion and HIF-1α stabilization using a prolyl-hydroxylase inhibitor. HIF-1α expression was enhanced in kidneys with progressive cyst growth induced by early Pkd1 deletion, but unchanged in the milder phenotype induced by later Pkd1 deletion. Hif-1α co-deletion significantly attenuated cyst growth in the severe, but not in the mild, phenotype. Application of a prolyl-hydroxylase inhibitor resulted in severe aggravation of the mild phenotype with rapid loss of renal function. HIF-1α expression was associated with induction of genes that mediate calcium-activated chloride secretion. Thus, HIF-1α does not seem to play a role in early cyst formation, but accelerates cyst growth during progressive polycystic kidney disease. This novel mechanism of cyst growth may qualify as a therapeutic target.
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Affiliation(s)
- Andre Kraus
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Dorien J M Peters
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Bernd Klanke
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Alexander Weidemann
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Carsten Willam
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Gunnar Schley
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Karl Kunzelmann
- Department of Physiology, University of Regensburg, Regensburg, Germany
| | - Kai-Uwe Eckardt
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Bjoern Buchholz
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany.
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Schley G, Jordan J, Ellmann S, Rosen S, Eckardt KU, Uder M, Willam C, Bäuerle T. Multiparametric magnetic resonance imaging of experimental chronic kidney disease: A quantitative correlation study with histology. PLoS One 2018; 13:e0200259. [PMID: 30011301 PMCID: PMC6047786 DOI: 10.1371/journal.pone.0200259] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 06/24/2018] [Indexed: 12/27/2022] Open
Abstract
Objectives In human chronic kidney disease (CKD) the extent of renal tubulointerstitial fibrosis correlates with progressive loss of renal function. However, fibrosis can so far only be assessed by histology of kidney biopsies. Magnetic resonance imaging (MRI) can provide information about tissue architecture, but its potential to assess fibrosis and inflammation in diseased kidneys remains poorly defined. Materials and methods We evaluated excised kidneys in a murine adenine-induced nephropathy model for CKD by MRI and correlated quantitative MRI parameters (T1, T2, and T2* relaxation times, apparent diffusion coefficient and fractional anisotropy) with histological hallmarks of progressive CKD, including renal fibrosis, inflammation, and microvascular rarefaction. Furthermore, we analyzed the effects of paraformaldehyde fixation on MRI parameters by comparing kidney samples before and after fixation with paraformaldehyde. Results In diseased kidneys T2 and T2* relaxation times, apparent diffusion coefficient and fractional anisotropy in the renal cortex and/or outer medulla were significantly different from those in control kidneys. In particular, T2 relaxation time was the best parameter to distinguish control and CKD groups and correlated very well with the extent of fibrosis, inflammatory infiltrates, tubular dilation, crystal deposition, and loss of peritubular capillaries and normal tubules in the renal cortex and outer medulla. Fixation with paraformaldehyde had no impact on T2 relaxation time and fractional anisotropy, whereas T1 times significantly decreased and T2* times and apparent diffusion coefficients increased in fixed kidney tissue. Conclusions MRI parameters provide a promising approach to quantitatively assess renal fibrosis and inflammation in CKD. Especially T2 relaxation time correlates well with histological features of CKD and is not influenced by paraformaldehyde fixation of kidney samples. Thus, T2 relaxation time might be a candidate parameter for non-invasive assessment of renal fibrosis in human patients.
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Affiliation(s)
- Gunnar Schley
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
- * E-mail:
| | - Jutta Jordan
- Department of Radiology, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
| | - Stephan Ellmann
- Department of Radiology, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
| | - Seymour Rosen
- Department of Pathology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America
| | - Kai-Uwe Eckardt
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
- Department of Nephrology and Medical Intensive Care, Charité –Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Uder
- Department of Radiology, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
| | - Carsten Willam
- Department of Nephrology and Hypertension, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
| | - Tobias Bäuerle
- Department of Radiology, Friedrich-Alexander University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany
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Abstract
PURPOSE OF REVIEW Recent studies in the kidney have revealed that the well characterized tumor antigen mucin 1 (MUC1/Muc1) also has numerous functions in the normal and injured kidney. RECENT FINDINGS Mucin 1 is a transmembrane mucin with a robust glycan-dependent apical targeting signal and efficient recycling from endosomes. It was recently reported that the TRPV5 calcium channel is stabilized on the cell surface by galectin-dependent cross-linking to mucin 1, providing a novel mechanism for regulation of ion channels and normal electrolyte balance.Our recent studies in mice show that Muc 1 is induced after ischemia, stabilizing hypoxia-inducible factor 1 (HIF-1)α and β-catenin levels, and transactivating the HIF-1 and β-catenin protective pathways. However, prolonged induction of either pathway in the injured kidney can proceed from apparent full recovery to chronic kidney disease. A very recent report indicates that aberrant activation of mucin 1 signaling after ischemic injury in mice and humans is associated with development of chronic kidney disease and fibrosis. A frameshift mutation in MUC1 was recently identified as the genetic lesion causing medullary cystic kidney disease type 1, now appropriately renamed MUC1 Kidney Disease. SUMMARY Studies of mucin 1 in the kidney now reveal significant functions for the extracellular mucin-like domain and signaling through the cytoplasmic tail.
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Hou W, Ji Z. Generation of autochthonous mouse models of clear cell renal cell carcinoma: mouse models of renal cell carcinoma. Exp Mol Med 2018; 50:1-10. [PMID: 29651023 PMCID: PMC5938055 DOI: 10.1038/s12276-018-0059-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/10/2017] [Accepted: 10/10/2017] [Indexed: 01/05/2023] Open
Abstract
Renal cell carcinoma (RCC) is one of the 10 most common cancers worldwide, and to date, a strong systemic therapy has not been developed to treat RCC, even with the remarkable modern advances in molecular medicine mostly due to our incomplete understanding of its tumorigenesis. There is a dire unmet need to understand the etiology and progression of RCC, especially the most common subtype, clear cell RCC (ccRCC), and to develop new treatments for RCC. Genetically engineered mouse (GEM) models are able to mimic the initiation, progression, and metastasis of cancer, thus providing valuable insights into tumorigenesis and serving as perfect preclinical platforms for drug testing and biomarker discovery. Despite substantial advances in the molecular investigation of ccRCC and monumental efforts that have been performed to try to establish autochthonous animal models of ccRCC, this goal has not been achieved until recently. Here we present a review of the most exciting progress relevant to GEM models of ccRCC.
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Affiliation(s)
- Weibin Hou
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China
| | - Zhigang Ji
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, People's Republic of China.
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Schönenberger D, Rajski M, Harlander S, Frew IJ. Vhl deletion in renal epithelia causes HIF-1α-dependent, HIF-2α-independent angiogenesis and constitutive diuresis. Oncotarget 2018; 7:60971-60985. [PMID: 27528422 PMCID: PMC5308630 DOI: 10.18632/oncotarget.11275] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 08/01/2016] [Indexed: 12/29/2022] Open
Abstract
One of the earliest requirements for the formation of a solid tumor is the establishment of an adequate blood supply. Clear cell renal cell carcinomas (ccRCC) are highly vascularized tumors in which the earliest genetic event is most commonly the biallelic inactivation of the VHL tumor suppressor gene, leading to constitutive activation of the HIF-1α and HIF-2α transcription factors, which are known angiogenic factors. However it remains unclear whether either or both HIF-1α or HIF-2α stabilization in normal renal epithelial cells are necessary or sufficient for alterations in blood vessel formation. We show that renal epithelium-specific deletion of Vhl in mice causes increased medullary vascularization and that this phenotype is completely rescued by Hif1a co-deletion, but not by co-deletion of Hif2a. A physiological consequence of changes in the blood vessels of the vasa recta in Vhl-deficient mice is a diabetes insipidus phenotype of excretion of large amounts of highly diluted urine. This constitutive diuresis is fully compensated by increased water consumption and mice do not show any signs of dehydration, renal failure or salt wasting and blood electrolyte levels remain unchanged. Co-deletion of Hif1a, but not Hif2a, with Vhl, fully restored kidney morphology and function, correlating with the rescue of the vasculature. We hypothesize that the increased medullary vasculature alters salt uptake from the renal interstitium, resulting in a disruption of the osmotic gradient and impaired urinary concentration. Taken together, our study characterizes a new mouse model for a form of diabetes insipidus and non-obstructive hydronephrosis and provides new insights into the physiological and pathophysiological effects of HIF-1α stabilization on the vasculature in the kidney.
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Affiliation(s)
| | - Michal Rajski
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Sabine Harlander
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Ian J Frew
- Institute of Physiology, University of Zurich, Zurich, Switzerland.,Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
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Kabei K, Tateishi Y, Nozaki M, Tanaka M, Shiota M, Osada-Oka M, Nishide S, Uchida J, Nakatani T, Tomita S, Miura K. Role of hypoxia-inducible factor-1 in the development of renal fibrosis in mouse obstructed kidney: Special references to HIF-1 dependent gene expression of profibrogenic molecules. J Pharmacol Sci 2017; 136:31-38. [PMID: 29352658 DOI: 10.1016/j.jphs.2017.12.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/28/2017] [Accepted: 12/05/2017] [Indexed: 01/26/2023] Open
Abstract
The aim of the study is to clarify the role of hypoxia-inducible factor-1 (HIF-1) in the development of renal fibrosis in mouse obstructive nephropathy. We used mice with floxed HIF-1α alleles and tamoxifen-inducible Cre/ERT2 recombinase under ubiquitin C promoter to induce global HIF-1α deletion. Following tamoxifen administration, mice were subjected to unilateral ureteral obstruction (UUO). At 3, 7 and 14 days after UUO, renal gene expression profiles and interstitial fibrosis were assessed. HIF-1 dependent up-regulation of prolyl hydroxylase 3 and glucose transporter-1 was observed in the obstructed kidney at 3 and 7 days but not at 14 days after UUO. Various factors promoting fibrosis were up-regulated during the development of fibrosis. HIF-1 dependent gene expression of profibrotic molecules, plasminogen activator inhibitor 1, connective tissue growth factor, lysyl oxidase like 2 and transglutaminase 2 was observed in the obstructed kidney but such HIF-1 dependency was limited to the early onset of renal fibrosis. Global HIF-1 deletion tended to attenuate interstitial collagen I deposition at 3 days but had no effects thereafter. It is suggested that HIF-1 dependent profibrogenic mechanisms are operating at the early onset of renal fibrosis but its contribution declines with the progression in mouse UUO model.
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Affiliation(s)
- Kazuya Kabei
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan; Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Yu Tateishi
- Ishikiri Seiki Hospital, Yayoi-cho, Higashiosaka, Osaka 579-8026, Japan
| | - Masakazu Nozaki
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Masako Tanaka
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan; Department of Life Science and Medical BioScience, School of Advanced Science and Engineering, Waseda University, Wakamatsu-cho, Shinjuku-ku, Tokyo, 162-8480, Japan
| | - Masayuki Shiota
- Department of Research Support Platform, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Mayuko Osada-Oka
- Food Hygiene and Environmental Health, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Sakyo-ku, Kyoto 606-8522, Japan
| | - Shunji Nishide
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Junji Uchida
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Tatsuya Nakatani
- Department of Urology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Shuhei Tomita
- Department of Pharmacology, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan
| | - Katsuyuki Miura
- Department of Applied Pharmacology and Therapeutics, Osaka City University Graduate School of Medicine, Asahimachi, Abeno-ku, Osaka 545-8585, Japan.
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He L, Wei Q, Liu J, Yi M, Liu Y, Liu H, Sun L, Peng Y, Liu F, Venkatachalam MA, Dong Z. AKI on CKD: heightened injury, suppressed repair, and the underlying mechanisms. Kidney Int 2017; 92:1071-1083. [PMID: 28890325 DOI: 10.1016/j.kint.2017.06.030] [Citation(s) in RCA: 263] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 06/13/2017] [Accepted: 06/19/2017] [Indexed: 02/07/2023]
Abstract
Acute kidney injury (AKI) and chronic kidney disease (CKD) are interconnected. Although AKI-to-CKD transition has been intensively studied, the information of AKI on CKD is very limited. Nonetheless, AKI, when occurring in patients with CKD, is known to be more severe and difficult to recover. CKD is associated with significant changes in cell signaling in kidney tissues, including the activation of transforming growth factor-β, p53, hypoxia-inducible factor, and major developmental pathways. At the cellular level, CKD is characterized by mitochondrial dysfunction, oxidative stress, and aberrant autophagy. At the tissue level, CKD is characterized by chronic inflammation and vascular dysfunction. These pathologic changes may contribute to the heightened sensitivity of, and nonrecovery from, AKI in patients with CKD.
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Affiliation(s)
- Liyu He
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qingqing Wei
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Jing Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Mixuan Yi
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, USA
| | - Yu Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hong Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lin Sun
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Youming Peng
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Fuyou Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Manjeri A Venkatachalam
- Department of Pathology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Zheng Dong
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, Georgia, USA.
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Bettaieb A, Koike S, Chahed S, Zhao Y, Bachaalany S, Hashoush N, Graham J, Huma F, Havel PJ, Gruzdev A, Zeldin DC, Hammock BD, Haj FG. Podocyte-specific soluble epoxide hydrolase deficiency in mice attenuates acute kidney injury. FEBS J 2017; 284:1970-1986. [PMID: 28485854 PMCID: PMC5515292 DOI: 10.1111/febs.14100] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/22/2017] [Accepted: 05/04/2017] [Indexed: 12/16/2022]
Abstract
Podocytes play an important role in maintaining glomerular function, and podocyte injury is a significant component in the pathogenesis of proteinuria. Soluble epoxide hydrolase (sEH) is a cytosolic enzyme whose genetic deficiency and pharmacological inhibition have beneficial effects on renal function, but its role in podocytes remains unexplored. The objective of this study was to investigate the contribution of sEH in podocytes to lipopolysaccharide (LPS)-induced kidney injury. We report increased sEH transcript and protein expression in murine podocytes upon LPS challenge. To determine the function of sEH in podocytes in vivo we generated podocyte-specific sEH-deficient (pod-sEHKO) mice. Following LPS challenge, podocyte sEH-deficient mice exhibited lower kidney injury, proteinuria, and blood urea nitrogen concentrations than controls suggestive of preserved renal function. Also, renal mRNA and serum concentrations of inflammatory cytokines IL-6, IL-1β, and TNFα were significantly lower in LPS-treated pod-sEHKO than control mice. Moreover, podocyte sEH deficiency was associated with decreased LPS-induced NF-κB and MAPK activation and attenuated endoplasmic reticulum stress. Furthermore, the protective effects of podocyte sEH deficiency in vivo were recapitulated in E11 murine podocytes treated with a selective sEH pharmacological inhibitor. Altogether, these findings identify sEH in podocytes as a contributor to signaling events in acute renal injury and suggest that sEH inhibition may be of therapeutic value in proteinuria. ENZYMES Soluble epoxide hydrolase: EC 3.3.2.10.
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Affiliation(s)
- Ahmed Bettaieb
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
- Department of Nutrition, University of Tennessee-Knoxville, Knoxville, TN 37996
| | - Shinichiro Koike
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
| | - Samah Chahed
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
| | - Yi Zhao
- Department of Nutrition, University of Tennessee-Knoxville, Knoxville, TN 37996
| | - Santana Bachaalany
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
| | - Nader Hashoush
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
| | - James Graham
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
| | - Fatima Huma
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35233
| | - Peter J. Havel
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California Davis, One Shields Ave, Davis, CA 95616
| | - Artiom Gruzdev
- Division of Intramural Research, National Institute of Environmental Health Sciences, North Carolina, NC 27709
| | - Darryl C. Zeldin
- Division of Intramural Research, National Institute of Environmental Health Sciences, North Carolina, NC 27709
| | - Bruce D. Hammock
- Department of Entomology and Nematology, University of California-Davis, Davis, CA 95616
- Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817
| | - Fawaz G. Haj
- Department of Nutrition, University of California Davis, One Shields Ave, Davis, CA 95616
- Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817
- Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, University of California Davis, Sacramento, CA 95817
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Activation of Hypoxia Signaling in Stromal Progenitors Impairs Kidney Development. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:1496-1511. [PMID: 28527294 DOI: 10.1016/j.ajpath.2017.03.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 03/22/2017] [Indexed: 01/16/2023]
Abstract
Intrauterine hypoxia is a reason for impaired kidney development. The cellular and molecular pathways along which hypoxia exerts effects on nephrogenesis are not well understood. They are likely triggered by hypoxia-inducible transcription factors (HIFs), and their effects appear to be dependent on the cell compartment contributing to kidney formation. In this study, we investigated the effects of HIF activation in the developing renal stroma, which also essentially modulates nephron development from the metanephric mesenchyme. HIF activation was achieved by conditional deletion of the von Hippel-Lindau tumor suppressor (VHL) protein in the forkhead box FOXD1 cell lineage, from which stromal progenitors arise. The resulting kidneys showed maturation defects associated with early postnatal death. In particular, nephron formation, tubular maturation, and the differentiation of smooth muscle, renin, and mesangial cells were impaired. Erythropoietin expression was strongly enhanced. Codeletion of VHL together with HIF2A but not with HIF1A led to apparently normal kidneys, and the animals reached normal age but were anemic because of low erythropoietin levels. Stromal deletion of HIF2A or HIF1A alone did not affect kidney development. These findings emphasize the relevance of sufficient intrauterine oxygenation for normal renal stroma differentiation, suggesting that chronic activity of HIF2 in stromal progenitors impairs kidney development. Finally, these data confirm the concept that normal stroma function is essential for normal tubular differentiation.
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Abstract
PURPOSE OF REVIEW Kidney development depends on outgrowth of the ureteric bud into the metanephric mesenchyme. The number of ureteric bud branching events determines the final number of nephrons, which correlates inversely with the risk for development of chronic kidney disease and arterial hypertension during lifetime. The purpose of this review is to highlight the influence of oxygen on nephrogenesis and to describe cellular mechanisms by which hypoxia can impair nephron formation. RECENT FINDINGS Although kidney development normally takes place under hypoxic conditions, nephrogenesis is impaired when oxygen availability falls below the usual range. Hypoxia-inducible factors (HIF) play an important role in linking low oxygen concentrations to the biology of nephron formation, but their effect appears to be cell type dependent. In ureteric bud cells, HIF stimulates tubulogenesis, whereas HIF stabilization in cells of the metanephric mesenchyme results in secretion of growth factors, including vascular endothelial growth factor A, which in aggregate inhibit ureteric bud branching. The balance between pro and antibranching effects may be altered in various ways, but the inhibitory effect usually seems to predominate under reduced oxygen concentrations, explaining how intrauterine hypoxia can lead to low nephron numbers. SUMMARY Oxygen availability has a complex influence on nephrogenesis. Oxygen concentrations outside an optimal low range may affect nephron endowment. Associations between placental insufficiency and increased risk for chronic kidney disease and arterial hypertension during later life may to a large extent be due to direct effects of reduced oxygen supply to the metanephric mesenchyme and mediated through the HIF pathway.
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