1
|
Hao S, DelliPizzi A, Lasaracina AP, Ferreri NR. TNF inhibits AQP2 expression via a miR137-dependent pathway. Am J Physiol Renal Physiol 2024; 326:F152-F164. [PMID: 37969102 DOI: 10.1152/ajprenal.00210.2023] [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: 07/20/2023] [Revised: 10/23/2023] [Accepted: 11/08/2023] [Indexed: 11/17/2023] Open
Abstract
As miR-137 is a regulator of aquaporin (AQP)2 expression and tumor necrosis factor (TNF) inhibits the expression of several extrarenal AQPs, we tested the hypothesis that TNF inhibits AQP2 in the kidney via a miR-137-dependent mechanism. AQP2 mRNA and protein expression decreased ∼70% and 53%, respectively, in primary renal inner medullary collecting duct (IMCD) cells transfected with a miRNA mimic of mmu-miR-137, suggesting that miR-137 directly targets AQP2 mRNA in these cells. Exposure of IMCD cells for 2 h to 400 mosmol/kgH2O medium increased mmu-miR-137 mRNA expression about twofold, conditions that also increased TNF production approximately fourfold. To determine if the increase in mmu-miR-137 mRNA expression was related to the concomitant increase in TNF, IMCD cells were transfected with a lentivirus construct to silence TNF. This construct decreased mmu-miR-137 mRNA expression by ∼63%, suggesting that TNF upregulates the expression of miR-137. Levels of miR-137 also increased approximately twofold in IMCD tubules isolated from male mice given 1% NaCl in the drinking water for 3 days. Intrarenal lentivirus silencing of TNF increased AQP2 mRNA levels and protein expression concomitant with a decrease in miR-137 levels in tubules isolated from mice given NaCl. The changes in AQP2 expression levels affected the diluting ability of the kidney, which was assessed by measuring urine osmolality and urine volume, as the decrease in these parameters after renal silencing of TNF was prevented on intrarenal administration of miR-137. The study reveals a novel TNF function via a miR-137-dependent mechanism that regulates AQP2 expression and function.NEW & NOTEWORTHY An emerging intratubular tumor necrosis factor system, functioning during normotensive noninflammatory conditions, acts as a breaking mechanism that attenuates both the increases in Na+-K+-2Cl- cotransporter and aquaporin-2 induced by arginine vasopressin, thereby contributing to the regulation of electrolyte balance and blood pressure. A greater appreciation for the role of cytokines as mediators of immunophysiological responses may help reveal the relationship between the immune system and other physiological systems.
Collapse
Affiliation(s)
- Shoujin Hao
- Department of Pharmacology, New York Medical College, Valhalla, New York, United States
| | - AnnMarie DelliPizzi
- Department of Biology, Dominican University New York, Orangeburg, New York, United States
| | - Anna Pia Lasaracina
- Department of Pharmacology, New York Medical College, Valhalla, New York, United States
| | - Nicholas R Ferreri
- Department of Pharmacology, New York Medical College, Valhalla, New York, United States
| |
Collapse
|
2
|
Trepiccione F, Iervolino A, D'Acierno M, Siccardi S, Costanzo V, Sardella D, De La Motte LR, D'Apolito L, Miele A, Perna AF, Capolongo G, Zacchia M, Frische S, Nielsen R, Staiano L, Sambri I, De Cegli R, Unwin R, Eladari D, Capasso G. The SGLT2 inhibitor dapagliflozin improves kidney function in glycogen storage disease XI. Sci Transl Med 2023; 15:eabn4214. [PMID: 37910600 DOI: 10.1126/scitranslmed.abn4214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 10/10/2023] [Indexed: 11/03/2023]
Abstract
Glycogen storage disease XI, also known as Fanconi-Bickel syndrome (FBS), is a rare autosomal recessive disorder caused by mutations in the SLC2A2 gene that encodes the glucose-facilitated transporter type 2 (GLUT2). Patients develop a life-threatening renal proximal tubule dysfunction for which no treatment is available apart from electrolyte replacement. To investigate the renal pathogenesis of FBS, SLC2A2 expression was ablated in mouse kidney and HK-2 proximal tubule cells. GLUT2Pax8Cre+ mice developed time-dependent glycogen accumulation in proximal tubule cells and recapitulated the renal Fanconi phenotype seen in patients. In vitro suppression of GLUT2 impaired lysosomal autophagy as shown by transcriptomic and biochemical analysis. However, this effect was reversed by exposure to a low glucose concentration, suggesting that GLUT2 facilitates the homeostasis of key cellular pathways in proximal tubule cells by preventing glucose toxicity. To investigate whether targeting proximal tubule glucose influx can limit glycogen accumulation and correct symptoms in vivo, we treated mice with the selective SGLT2 inhibitor dapagliflozin. Dapagliflozin reduced glycogen accumulation and improved metabolic acidosis and phosphaturia in the animals by normalizing the expression of Napi2a and NHE3 transporters. In addition, in a patient with FBS, dapagliflozin was safe, improved serum potassium and phosphate concentrations, and reduced glycogen content in urinary shed cells. Overall, this study provides proof of concept for dapagliflozin as a potentially suitable therapy for FBS.
Collapse
Affiliation(s)
- Francesco Trepiccione
- Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli," 80131 Naples, Italy
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Anna Iervolino
- Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli," 80131 Naples, Italy
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | | | - Sabrina Siccardi
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Vincenzo Costanzo
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Donato Sardella
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Luigi R De La Motte
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Luciano D'Apolito
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Antonio Miele
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Alessandra F Perna
- Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli," 80131 Naples, Italy
| | - Giovanna Capolongo
- Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli," 80131 Naples, Italy
| | - Miriam Zacchia
- Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli," 80131 Naples, Italy
| | | | - Rikke Nielsen
- Department of Biomedicine, Aarhus University, 8000 Aarhus, Denmark
| | - Leopoldo Staiano
- Telethon Institute of Genetics and Medicine (TIGEM), 80078 Pozzuoli, Italy
- Institute for Genetic and Biomedical Research, National Research Council (CNR), 20089 Milan, Italy
| | - Irene Sambri
- Telethon Institute of Genetics and Medicine (TIGEM), 80078 Pozzuoli, Italy
- Department of Medical and Translational Science, Federico II University, 80131 Naples, Italy
| | - Rossella De Cegli
- Telethon Institute of Genetics and Medicine (TIGEM), 80078 Pozzuoli, Italy
| | - Robert Unwin
- UCL Department of Renal Medicine, Royal Free Hospital, London NW3 2PF, UK
| | - Dominique Eladari
- Service de Médecine de Précision des maladies Métaboliques et Rénales, CHU Amiens-Picardie, Université de Picardie Jules Verne, 80054 Amiens, France
- FCRIN-INI-CRCT, 54500 Vandœuvre-lès-Nancy, France
- Paris Cardiovascular Research Center (PARCC), INSERM U970, F-75015, Paris, France
| | - Giovambattista Capasso
- Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli," 80131 Naples, Italy
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| |
Collapse
|
3
|
Liu M, Deng M, Luo Q, Sun P, Liang A, Li X, Luo X, Pan J, Zhang W, Mo M, Guo X, Dou X, Jia Z. Metabolic reprogramming of renal epithelial cells contributes to lithium-induced nephrogenic diabetes insipidus. Biochim Biophys Acta Mol Basis Dis 2023:166765. [PMID: 37245528 DOI: 10.1016/j.bbadis.2023.166765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/29/2023] [Accepted: 05/23/2023] [Indexed: 05/30/2023]
Abstract
Lithium, mainstay treatment for bipolar disorder, frequently causes nephrogenic diabetes insipidus (NDI) and renal injury. However, the detailed mechanism remains unclear. Here we used the analysis of metabolomics and transcriptomics and metabolic intervention in a lithium-induced NDI model. Mice were treated with lithium chloride (40 mmol/kg chow) and rotenone (ROT, 100 ppm) in diet for 28 days. Transmission electron microscopy showed extensive mitochondrial structural abnormalities in whole nephron. ROT treatment markedly ameliorated lithium-induced NDI and mitochondrial structural abnormalities. Moreover, ROT attenuated the decrease of mitochondrial membrane potential in line with the upregulation of mitochondrial genes in kidney. Metabolomics and transcriptomics data demonstrated that lithium activated galactose metabolism, glycolysis, and amino sugar and nucleotide sugar metabolism. All these events were indicative of metabolic reprogramming in kidney cells. Importantly, ROT ameliorated metabolic reprogramming in NDI model. Based on transcriptomics analysis, we also found the activation of MAPK, mTOR and PI3K-Akt signaling pathways and impaired focal adhesion, ECM-receptor interaction and actin cytoskeleton in Li-NDI model were inhibited or attenuated by ROT treatment. Meanwhile, ROT administration inhibited the increase of Reactive Oxygen Species (ROS) in NDI kidneys along with enhanced SOD2 expression. Finally, we observed that ROT partially restored reduced the reduced AQP2 and enhanced urinary sodium excretion along with the blockade of increased PGE2 output. Taken together, the current study demonstrates that mitochondrial abnormalities and metabolic reprogramming play a key role in lithium-induced NDI, as well as the dysregulated signaling pathways, thereby serving as a novel therapeutic target.
Collapse
Affiliation(s)
- Mi Liu
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China; Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China; Department of Anesthesiology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou 510060, China
| | - Mokan Deng
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Qimei Luo
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Peng Sun
- Department of Anesthesiology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Guangzhou 510060, China
| | - Ailin Liang
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Xiulin Li
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Xiaojie Luo
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Jianyi Pan
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Wei Zhang
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Min Mo
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China
| | - Xiangdong Guo
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xianrui Dou
- Department of Nephrology, Southern Medical University Shunde Hospital, Foshan 528300, China.
| | - Zhanjun Jia
- Nanjing Key Laboratory of Pediatrics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China.
| |
Collapse
|
4
|
Lombari P, Mallardo M, Petrazzuolo O, Amruthraj Nagoth J, Fiume G, Scanni R, Iervolino A, Damiano S, Coppola A, Borriello M, Ingrosso D, Perna AF, Zacchia M, Trepiccione F, Capasso G. miRNA-23a modulates sodium-hydrogen exchanger 1 expression: studies in medullary thick ascending limb of salt-induced hypertensive rats. Nephrol Dial Transplant 2023; 38:586-598. [PMID: 35921220 DOI: 10.1093/ndt/gfac232] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The kidney is the main organ in the pathophysiology of essential hypertension. Although most bicarbonate reabsorption occurs in the proximal tubule, the medullary thick ascending limb (mTAL) of the nephron also maintains acid-base balance by contributing to 25% of bicarbonate reabsorption. A crucial element in this regulation is the sodium-hydrogen exchanger 1 (NHE1), a ubiquitous membrane protein controlling intracellular pH, where proton extrusion is driven by the inward sodium flux. MicroRNA (miRNA) expression of hypertensive patients significantly differs from that of normotensive subjects. The aim of this study was to determine the functional role of miRNA alterations at the mTAL level. METHODS By miRNA microarray analysis, we identified miRNA expression profiles in isolated mTALs from high sodium intake-induced hypertensive rats (HSD) versus their normotensive counterparts (NSD). In vitro validation was carried out in rat mTAL cells. RESULTS Five miRNAs involved in the onset of salt-sensitive hypertension were identified, including miR-23a, which was bioinformatically predicted to target NHE1 mRNA. Data demonstrated that miRNA-23a is downregulated in the mTAL of HSD rats while NHE1 is upregulated. Consistently, transfection of an miRNA-23a mimic in an mTAL cell line, using a viral vector, resulted in NHE1 downregulation. CONCLUSION NHE1, a protein involved in sodium reabsorption at the mTAL level and blood pressure regulation, is upregulated in our model. This was due to a downregulation of miRNA-23a. Expression levels of this miRNA are influenced by high sodium intake in the mTALs of rats. The downregulation of miRNA-23a in humans affected by essential hypertension corroborate our data and point to the potential role of miRNA-23a in the regulation of mTAL function following high salt intake.
Collapse
Affiliation(s)
- Patrizia Lombari
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Naples, Italy.,Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples "Federico II", Naples, Italy
| | - Oriana Petrazzuolo
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Joseph Amruthraj Nagoth
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Giuseppe Fiume
- Departments of Experimental and Clinical Medicine, University Magna Graecia of Catanzaro, Catanzaro, Italy
| | - Roberto Scanni
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Anna Iervolino
- Biogem, Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Sara Damiano
- Department of Veterinary Medicine and Animal Production, University of Naples "Federico II", Naples, Italy
| | - Annapaola Coppola
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Naples, Italy
| | - Margherita Borriello
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Naples, Italy
| | - Diego Ingrosso
- Department of Precision Medicine, University of Campania "L. Vanvitelli", Naples, Italy
| | - Alessandra F Perna
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Miriam Zacchia
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy
| | - Francesco Trepiccione
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy.,Biogem, Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Giovambattista Capasso
- Division of Nephrology, Department of Translational Medical Sciences, University of Campania "L. Vanvitelli", Naples, Italy.,Biogem, Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| |
Collapse
|
5
|
Brogna C, Costanzo V, Brogna B, Bisaccia DR, Brogna G, Giuliano M, Montano L, Viduto V, Cristoni S, Fabrowski M, Piscopo M. Analysis of Bacteriophage Behavior of a Human RNA Virus, SARS-CoV-2, through the Integrated Approach of Immunofluorescence Microscopy, Proteomics and D-Amino Acid Quantification. Int J Mol Sci 2023; 24:3929. [PMID: 36835341 PMCID: PMC9965620 DOI: 10.3390/ijms24043929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 02/08/2023] [Accepted: 02/11/2023] [Indexed: 02/18/2023] Open
Abstract
SARS-CoV-2, one of the human RNA viruses, is widely studied around the world. Significant efforts have been made to understand its molecular mechanisms of action and how it interacts with epithelial cells and the human microbiome since it has also been observed in gut microbiome bacteria. Many studies emphasize the importance of surface immunity and also that the mucosal system is critical in the interaction of the pathogen with the cells of the oral, nasal, pharyngeal, and intestinal epithelium. Recent studies have shown how bacteria in the human gut microbiome produce toxins capable of altering the classical mechanisms of interaction of viruses with surface cells. This paper presents a simple approach to highlight the initial behavior of a novel pathogen, SARS-CoV-2, on the human microbiome. The immunofluorescence microscopy technique can be combined with spectral counting performed at mass spectrometry of viral peptides in bacterial cultures, along with identification of the presence of D-amino acids within viral peptides in bacterial cultures and in patients' blood. This approach makes it possible to establish the possible expression or increase of viral RNA viruses in general and SARS-CoV-2, as discussed in this study, and to determine whether or not the microbiome is involved in the pathogenetic mechanisms of the viruses. This novel combined approach can provide information more rapidly, avoiding the biases of virological diagnosis and identifying whether a virus can interact with, bind to, and infect bacteria and epithelial cells. Understanding whether some viruses have bacteriophagic behavior allows vaccine therapies to be focused either toward certain toxins produced by bacteria in the microbiome or toward finding inert or symbiotic viral mutations with the human microbiome. This new knowledge opens a scenario on a possible future vaccine: the probiotics vaccine, engineered with the right resistance to viruses that attach to both the epithelium human surface and gut microbiome bacteria.
Collapse
Affiliation(s)
- Carlo Brogna
- Department of Research, Craniomed Group Facility Srl., 20091 Bresso, Italy
| | - Vincenzo Costanzo
- Biogem, Institute of Molecular Biology and Genetics, 83031 Ariano Irpino, Italy
| | - Barbara Brogna
- Department of Radiology, Moscati Hospital, Contrada Amoretta, 83100 Avellino, Italy
| | | | - Giancarlo Brogna
- Department of Research, Craniomed Group Facility Srl., 20091 Bresso, Italy
| | - Marino Giuliano
- Marsanconsulting Srl. Public Health Company, Via dei Fiorentini, 80133 Napoli, Italy
| | - Luigi Montano
- Andrology Unit and Service of LifeStyle Medicine in Uro-Andrology, Local Health Authority (ASL), 84124 Salerno, Italy
| | - Valentina Viduto
- Long COVID-19 Foundation, Brookfield Court, Garforth, Leeds LS25 1NB, UK
| | | | - Mark Fabrowski
- Department of Emergency Medicine, Royal Sussex County Hospital, University Hospitals Sussex, Eastern Road, Brighton BN2 5BE, UK
| | - Marina Piscopo
- Department of Biology, University of Naples Federico II, 80126 Napoli, Italy
| |
Collapse
|
6
|
Hu Y, Meng B, Yin S, Yang M, Li Y, Liu N, Li S, Liu Y, Sun D, Wang S, Wang Y, Fu Z, Wu Y, Pang A, Sun J, Wang Y, Yang X. Scorpion venom peptide HsTx2 suppressed PTZ-induced seizures in mice via the circ_0001293/miR-8114/TGF-β2 axis. J Neuroinflammation 2022; 19:284. [PMID: 36457055 PMCID: PMC9713996 DOI: 10.1186/s12974-022-02647-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 11/17/2022] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Due to the complexity of the mechanisms involved in epileptogenesis, the available antiseizure drugs (ASDs) do not meet clinical needs; hence, both the discovery of new ASDs and the elucidation of novel molecular mechanisms are very important. METHODS BALB/c mice were utilized to establish an epilepsy model induced by pentylenetetrazol (PTZ) administration. The peptide HsTx2 was administered for treatment. Primary astrocyte culture, immunofluorescence staining, RNA sequencing, identification and quantification of mouse circRNAs, cell transfection, bioinformatics and luciferase reporter analyses, enzyme-linked immunosorbent assay, RNA extraction and reverse transcription-quantitative PCR, Western blot and cell viability assays were used to explore the potential mechanism of HsTx2 via the circ_0001293/miR-8114/TGF-β2 axis. RESULTS The scorpion venom peptide HsTx2 showed an anti-epilepsy effect, reduced the inflammatory response, and improved the circular RNA circ_0001293 expression decrease caused by PTZ in the mouse brain. Mechanistically, in astrocytes, circ_0001293 acted as a sponge of endogenous microRNA-8114 (miR-8114), which targets transforming growth factor-beta 2 (TGF-β2). The knockdown of circ_0001293, overexpression of miR-8114, and downregulation of TGF-β2 all reversed the anti-inflammatory effects and the influence of HsTx2 on the MAPK and NF-κB signaling pathways in astrocytes. Moreover, both circ_0001293 knockdown and miR-8114 overexpression reversed the beneficial effects of HsTx2 on inflammation, epilepsy progression, and the MAPK and NF-κB signaling pathways in vivo. CONCLUSIONS HsTx2 suppressed PTZ-induced epilepsy by ameliorating inflammation in astrocytes via the circ_0001293/miR-8114/TGF-β2 axis. Our results emphasized that the use of exogenous peptide molecular probes as a novel type of ASD, as well as to explore the novel endogenous noncoding RNA-mediated mechanisms of epilepsy, might be a promising research area.
Collapse
Affiliation(s)
- Yan Hu
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.452826.fDepartment of Gynecology, Third Affiliated Hospital of Kunming Medical University, Kunming, 650118 Yunnan China
| | - Buliang Meng
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Saige Yin
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Meifeng Yang
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Yilin Li
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Naixin Liu
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Shanshan Li
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Yixiang Liu
- grid.413059.a0000 0000 9952 9510Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission & Ministry of Education, School of Ethno-Medicine and Ethno-Pharmacy, Yunnan Minzu University, Kunming, 650504 Yunnan China
| | - Dandan Sun
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Siyu Wang
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Yinglei Wang
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Zhe Fu
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Yutong Wu
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Ailan Pang
- grid.414902.a0000 0004 1771 3912Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, 650031 Yunnan China
| | - Jun Sun
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Ying Wang
- grid.413059.a0000 0000 9952 9510Key Laboratory of Chemistry in Ethnic Medicine Resource, State Ethnic Affairs Commission & Ministry of Education, School of Ethno-Medicine and Ethno-Pharmacy, Yunnan Minzu University, Kunming, 650504 Yunnan China
| | - Xinwang Yang
- grid.285847.40000 0000 9588 0960Department of Anatomy and Histology and Embryology, Faculty of Basic Medical Science, Kunming Medical University, Kunming, 650500 Yunnan China
| |
Collapse
|
7
|
The nuclear factor of activated T cells 5 (NFAT5) contributes to the renal corticomedullary differences in gene expression. Sci Rep 2022; 12:20304. [PMID: 36433977 PMCID: PMC9700710 DOI: 10.1038/s41598-022-24237-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 11/11/2022] [Indexed: 11/26/2022] Open
Abstract
The corticomedullary osmotic gradient between renal cortex and medulla induces a specific spatial gene expression pattern. The factors that controls these differences are not fully addressed. Adaptation to hypertonic environment is mediated by the actions of the nuclear factor of activated T-cells 5 (NFAT5). NFAT5 induces the expression of genes that lead to intracellular accumulation of organic osmolytes. However, a systematical analysis of the NFAT5-dependent gene expression in the kidneys was missing. We used primary cultivated inner medullary collecting duct (IMCD) cells from control and NFAT5 deficient mice as well as renal cortex and inner medulla from principal cell specific NFAT5 deficient mice for gene expression profiling. In primary NFAT5 deficient IMCD cells, hyperosmolality induced changes in gene expression were abolished. The majority of the hyperosmolality induced transcripts in primary IMCD culture were determined to have the greatest expression in the inner medulla. Loss of NFAT5 altered the expression of more than 3000 genes in the renal cortex and more than 5000 genes in the inner medulla. Gene enrichment analysis indicated that loss of NFAT5 is associated with renal inflammation and increased expression of kidney injury marker genes, like lipocalin-2 or kidney injury molecule-1. In conclusion we show that NFAT5 is a master regulator of gene expression in the kidney collecting duct and in vivo loss of NFAT function induces a kidney injury like phenotype.
Collapse
|
8
|
Petrillo F, Chernyakov D, Esteva-Font C, Poulsen SB, Edemir B, Fenton RA. Genetic deletion of the nuclear factor of activated T cells 5 in collecting duct principal cells causes nephrogenic diabetes insipidus. FASEB J 2022; 36:e22583. [PMID: 36197017 DOI: 10.1096/fj.202200856r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 08/24/2022] [Accepted: 09/20/2022] [Indexed: 11/11/2022]
Abstract
Water homeostasis is tightly regulated by the kidneys via the process of urine concentration. During reduced water intake, the antidiuretic hormone arginine vasopressin (AVP) binds to the vasopressin receptor type II (V2R) in the kidney to enhance countercurrent multiplication and medullary osmolality, and increase water reabsorption via aquaporin-2 (AQP2) water channels. The importance of this AVP, V2R, and AQP2 axis is highlighted by low urine osmolality and polyuria in people with various water balance disorders, including nephrogenic diabetes insipidus (NDI). ELF5 and nuclear factor of activated T cells 5 (NFAT5) are two transcription factors proposed to regulate Aqp2 expression, but their role is poorly defined. Here we generated two novel mouse lines with principal cell (PC)-specific deletion of ELF5 or NFAT5 and phenotyped them in respect to renal water handling. ELF5-deficient mice (ELF5PC-KO ) had a very mild phenotype, with no clear differences in AQP2 abundance, and mild differences in renal water handling and maximal urinary concentrating capacity. In contrast, NFAT5 (NFAT5PC-KO ) mice had significantly higher water intake and their 24 h urine volume was almost 10-fold greater than controls. After challenging with dDAVP or 8 h water restriction, NFAT5PC-KO mice were unable to concentrate their urine, demonstrating that they suffer from NDI. The abundance of AQP2, other AQPs, and the urea transporter UT-A1 were greatly decreased in NFAT5PC-KO mice. In conclusion, NFAT5 is a major regulator of not only Aqp2 gene transcription, but also other genes important for water homeostasis and its absence leads to the development of NDI.
Collapse
Affiliation(s)
| | - Dmitry Chernyakov
- Department of Medicine, Hematology and Oncology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany
| | | | - Søren B Poulsen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Bayram Edemir
- Department of Medicine, Hematology and Oncology, Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.,Institute for Physiology, Pathophysiology and Toxicology, Witten/Herdecke University, Witten, Germany
| | - Robert A Fenton
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| |
Collapse
|
9
|
Brancaccio M, Giachino C, Iazzetta AM, Cordone A, De Marino E, Affinito O, Vivo M, Calabrò V, Pollice A, Angrisano T. Integrated Bioinformatics Analysis Reveals Novel miRNA as Biomarkers Associated with Preeclampsia. Genes (Basel) 2022; 13:genes13101781. [PMID: 36292666 PMCID: PMC9601722 DOI: 10.3390/genes13101781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 11/04/2022] Open
Abstract
Preeclampsia is a leading cause of perinatal maternal-foetal mortality and morbidity. This study aims to identify the key microRNAs (miRNA) in preeclampsia and uncover their potential functions. We downloaded the miRNA expression profile of GSE119799 for plasma and GSE177049 for the placenta. Each dataset consisted of five patients (PE) and five controls (N). From a technical point of view, we analysed the counts per million (CPM) for both datasets, highlighting 358 miRNAs in common, 78 unique for plasma and 298 unique for placenta. At the same time, we performed an expression differential analysis (|logFC| ≥ 1|and FDR ≤ 0.05) to evaluate the biological impact of the miRNAs. This approach allowed us to highlight 321 miRNAs in common between plasma and placenta, within which four were upregulated in plasma. Furthermore, the same analysis revealed five miRNAs expressed exclusively in plasma; these were also upregulated. In conclusion, the in-depth bioinformatics analysis conducted during our study will allow us, on the one hand, to verify the targets of each of the nine identified miRNAs; on the other hand, to use them both as new non-invasive biomarkers and as therapeutic targets for the development of personalised treatments.
Collapse
Affiliation(s)
- Mariarita Brancaccio
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
- Correspondence: (M.B.); (T.A.); Tel.: +39-33-93121924 (M.B.); +39-34-94670474 (T.A.)
| | - Caterina Giachino
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | | | - Antonio Cordone
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Elena De Marino
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Ornella Affinito
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy
| | - Maria Vivo
- Department of Chemistry and Biology, University of Salerno, 84084 Fisciano, Italy
| | - Viola Calabrò
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Alessandra Pollice
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
| | - Tiziana Angrisano
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy
- Correspondence: (M.B.); (T.A.); Tel.: +39-33-93121924 (M.B.); +39-34-94670474 (T.A.)
| |
Collapse
|
10
|
D’Acierno M, Resaz R, Iervolino A, Nielsen R, Sardella D, Siccardi S, Costanzo V, D’Apolito L, Suzumoto Y, Segalerba D, Astigiano S, Perna AF, Capasso G, Eva A, Trepiccione F. Dapagliflozin Prevents Kidney Glycogen Accumulation and Improves Renal Proximal Tubule Cell Functions in a Mouse Model of Glycogen Storage Disease Type 1b. J Am Soc Nephrol 2022; 33:1864-1875. [PMID: 35820785 PMCID: PMC9528317 DOI: 10.1681/asn.2021070935] [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: 07/13/2021] [Accepted: 06/14/2022] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Mutations in SLC37A4, which encodes the intracellular glucose transporter G6PT, cause the rare glycogen storage disease type 1b (GSD1b). A long-term consequence of GSD1b is kidney failure, which requires KRT. The main protein markers of proximal tubule function, including NaPi2A, NHE3, SGLT2, GLUT2, and AQP1, are downregulated as part of the disease phenotype. METHODS We utilized an inducible mouse model of GSD1b, TM-G6PT-/-, to show that glycogen accumulation plays a crucial role in altering proximal tubule morphology and function. To limit glucose entry into proximal tubule cells and thus to prevent glycogen accumulation, we administered an SGLT2-inhibitor, dapagliflozin, to TM-G6PT-/- mice. RESULTS In proximal tubule cells, G6PT suppression stimulates the upregulation and activity of hexokinase-I, which increases availability of the reabsorbed glucose for intracellular metabolism. Dapagliflozin prevented glycogen accumulation and improved kidney morphology by promoting a metabolic switch from glycogen synthesis toward lysis and by restoring expression levels of the main proximal tubule functional markers. CONCLUSION We provide proof of concept for the efficacy of dapagliflozin in preserving kidney function in GSD1b mice. Our findings could represent the basis for repurposing this drug to treat patients with GSD1b.
Collapse
Affiliation(s)
| | - Roberta Resaz
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Anna Iervolino
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
- Department of Translational Medical Sciences, University of Campania “L. Vanvitelli,” Naples, Italy
| | - Rikke Nielsen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
| | - Donato Sardella
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Sabrina Siccardi
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Vincenzo Costanzo
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Luciano D’Apolito
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Yoko Suzumoto
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
| | - Daniela Segalerba
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | | | - Alessandra F. Perna
- Department of Translational Medical Sciences, University of Campania “L. Vanvitelli,” Naples, Italy
| | - Giovambattista Capasso
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
- Department of Translational Medical Sciences, University of Campania “L. Vanvitelli,” Naples, Italy
| | - Alessandra Eva
- Laboratory of Molecular Biology, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Francesco Trepiccione
- Biogem Institute of Molecular Biology and Genetics, Ariano Irpino, Italy
- Department of Translational Medical Sciences, University of Campania “L. Vanvitelli,” Naples, Italy
| |
Collapse
|
11
|
Abstract
PURPOSE OF REVIEW The current review aims to present the most recent achievements on the role of microRNAs (miRNAs) on the kidney function to stimulate research in the field and to expand new emerging concepts. RECENT FINDINGS The focus is on the role of miRNAs in intercellular communication along the segments of the nephron and on the epi-miRNAs, namely the possibility of some miRNAs to modulate the epigenetic machinery and so gene expression. Indeed, recent evidence showed that miRNAs included in exosomes and released by proximal tubule cells can modulate ENaC activity on cells of collecting duct. These data, although, from in-vitro models open to a novel role for miRNAs to participate in paracrine signaling pathways. In addition, the role of miRNAs as epigenetic modulators is expanding not only in the cancer field, but also in the other kidney diseases. Recent evidence identified three miRNAs able to modulate the AQP2 promoter metilation and showing an additional level of regulation for the AQP2. SUMMARY These evidence can inspire novel area of research both for renal physiology and drug discovery. The diseases involving the collecting duct are still missing disease modifying agents and the expanding miRNAs field could represent an opportunity.
Collapse
|
12
|
Abstract
Fluorescence microscopy has represented a crucial technique to explore the cellular and molecular mechanisms in the field of biomedicine. However, the conventional one-photon microscopy exhibits many limitations when living samples are imaged. The new technologies, including two-photon microscopy (2PM), have considerably improved the in vivo study of pathophysiological processes, allowing the investigators to overcome the limits displayed by previous techniques. 2PM enables the real-time intravital imaging of the biological functions in different organs at cellular and subcellular resolution thanks to its improved laser penetration and less phototoxicity. The development of more sensitive detectors and long-wavelength fluorescent dyes as well as the implementation of semi-automatic software for data analysis allowed to gain insights in essential physiological functions, expanding the frontiers of cellular and molecular imaging. The future applications of 2PM are promising to push the intravital microscopy beyond the existing limits. In this review, we provide an overview of the current state-of-the-art methods of intravital microscopy, focusing on the most recent applications of 2PM in kidney physiology.
Collapse
|
13
|
Costanzo V, D’Apolito L, Sardella D, Iervolino A, La Manna G, Capasso G, Frische S, Trepiccione F. Single nephron glomerular filtration rate measured by linescan multiphoton microscopy compared to conventional micropuncture. Pflugers Arch 2022; 474:733-741. [PMID: 35397662 PMCID: PMC9192459 DOI: 10.1007/s00424-022-02686-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/27/2022] [Accepted: 03/28/2022] [Indexed: 12/19/2022]
Abstract
Renal micropuncture, which requires the direct access to the renal tubules, has for long time been the technique of choice to measure the single nephron glomerular filtration rate (SNGFR) in animal models. This approach is challenging by virtue of complex animal preparation and numerous technically difficult steps. The introduction of intravital multiphoton microscopy (MPM) offers another approach to the measure of the SNGFR by mean of the high laser-tissue penetration and the optical sectioning capacity. Previous MPM studies measuring SNGFR in vivo relied on fast full-frame acquisition during the filtration process obtainable with high performance resonant scanners. In this study, we describe an innovative linescan–based MPM method. The new method can discriminate SNGFR variations both in conditions of low and high glomerular filtration, and shows results comparable to conventional micropuncture both for rats and mice. Moreover, this novel approach has improved spatial and time resolution and is faster than previous methods, thus enabling the investigation of SNGFR from more tubules and improving options for data-analysis.
Collapse
|
14
|
Noda Y, Sasaki S. Updates and Perspectives on Aquaporin-2 and Water Balance Disorders. Int J Mol Sci 2021; 22:ijms222312950. [PMID: 34884753 PMCID: PMC8657825 DOI: 10.3390/ijms222312950] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 12/31/2022] Open
Abstract
Ensuring the proper amount of water inside the body is essential for survival. One of the key factors in the maintenance of body water balance is water reabsorption in the collecting ducts of the kidney, a process that is regulated by aquaporin-2 (AQP2). AQP2 is a channel that is exclusively selective for water molecules and impermeable to ions or other small molecules. Impairments of AQP2 result in various water balance disorders, including nephrogenic diabetes insipidus (NDI), which is a disease characterized by a massive loss of water through the kidney and consequent severe dehydration. Dysregulation of AQP2 is also a cause of water retention with hyponatremia in heart failure, hepatic cirrhosis, and syndrome of inappropriate antidiuretic hormone secretion (SIADH). Antidiuretic hormone vasopressin is an upstream regulator of AQP2. Its binding to the vasopressin V2 receptor promotes AQP2 targeting to the apical membrane and thus enables water reabsorption. Tolvaptan, a vasopressin V2 receptor antagonist, is effective and widely used for water retention with hyponatremia. However, there are no studies showing improvement in hard outcomes or long-term prognosis. A possible reason is that vasopressin receptors have many downstream effects other than AQP2 function. It is expected that the development of drugs that directly target AQP2 may result in increased treatment specificity and effectiveness for water balance disorders. This review summarizes recent progress in studies of AQP2 and drug development challenges for water balance disorders.
Collapse
Affiliation(s)
- Yumi Noda
- Department of Nephrology, Nitobe Memorial Nakano General Hospital, Tokyo 164-8607, Japan
- Department of Nephrology, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
- Correspondence: ; Tel.: +81-3-3382-1231; Fax: +81-3-3382-1588
| | - Sei Sasaki
- Department of Nephrology, Cellular and Structural Physiology Laboratory, Tokyo Medical and Dental University, Tokyo 113-8519, Japan;
| |
Collapse
|