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Luo R, Yang KT, Wang F, Zheng H, Yang T. Collecting Duct Pro(Renin) Receptor Contributes to Unilateral Ureteral Obstruction-Induced Kidney Injury via Activation of the Intrarenal RAS. Hypertension 2024; 81:2152-2161. [PMID: 39171392 PMCID: PMC11410543 DOI: 10.1161/hypertensionaha.123.21740] [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: 06/26/2023] [Accepted: 05/10/2024] [Indexed: 08/23/2024]
Abstract
BACKGROUND Although the concept of the intrarenal renin-angiotensin system (RAS) in renal disease is well-described in the literature, the precise pathogenic role and mechanism of this local system have not been directly assessed in the absence of confounding influence from the systemic RAS. The present study used novel mouse models of collecting duct (CD)-specific deletion of (pro)renin receptor (PRR) or renin together with pharmacological inhibition of soluble PRR production to unravel the precise contribution of the intrarenal RAS to renal injury induced by unilateral ureteral obstruction. METHODS We examined the impact of CD-specific deletion of PRR, CD-specific deletion of renin, and S1P (site-1 protease) inhibitor PF429242 treatment on renal fibrosis and inflammation and the indices of the intrarenal RAS in a mouse model of unilateral ureteral obstruction. RESULTS After 3 days of unilateral ureteral obstruction, the indices of the intrarenal RAS including the renal medullary renin content, activity and mRNA expression, and Ang (angiotensin) II content in obstructed kidneys of floxed mice were all increased. That effect was reversed with CD-specific deletion of PRR, CD-specific deletion of renin, and PF429242 treatment, accompanied by consistent improvement in renal fibrosis and inflammation. On the other hand, renal cortical renin levels were unaffected by unilateral ureteral obstruction, irrespective of the genotype. Similar results were obtained via pharmacological inhibition of S1P, the key protease for the generation of soluble PRR. CONCLUSIONS Our results reveal that PRR-dependent/soluble PRR-dependent activation of CD renin represents a key determinant of the intrarenal RAS and, thus, obstruction-induced renal inflammation and fibrosis.
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Affiliation(s)
- Renfei Luo
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
- Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Kevin T. Yang
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Fei Wang
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
- Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Huaqing Zheng
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
- Veterans Affairs Medical Center, Salt Lake City, Utah, USA
| | - Tianxin Yang
- Department of Internal Medicine, University of Utah, Salt Lake City, Utah, USA
- Veterans Affairs Medical Center, Salt Lake City, Utah, USA
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2
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Zhu M, Yi X, Song S, Yang H, Yu J, Xu C. Principle role of the (pro)renin receptor system in cardiovascular and metabolic diseases: An update. Cell Signal 2024; 124:111417. [PMID: 39321906 DOI: 10.1016/j.cellsig.2024.111417] [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: 06/24/2024] [Revised: 09/07/2024] [Accepted: 09/15/2024] [Indexed: 09/27/2024]
Abstract
(Pro)renin receptor (PRR), along with its soluble form, sPRR, functions not only as a crucial activator of the local renin-angiotensin system but also engages with and activates various angiotensin II-independent signaling pathways, thus playing complex and significant roles in numerous physiological and pathophysiological processes, including cardiovascular and metabolic disorders. This article reviews current knowledge on the intracellular partners of the PRR system and explores its physiological and pathophysiological impacts on cardiovascular diseases as well as conditions related to glucose and lipid metabolism, such as hypertension, heart disease, liver disease, diabetes, and diabetic complications. Targeting the PRR system could emerge as a promising therapeutic strategy for treating these conditions. Elevated levels of circulating sPRR might indicate the severity of these diseases, potentially serving as a biomarker for diagnosis and prognosis in clinical settings. A comprehensive understanding of the functions and regulatory mechanisms of the PRR system could facilitate the development of novel therapeutic approaches for the prevention and management of cardiovascular and metabolic diseases.
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Affiliation(s)
- Mengzhi Zhu
- College of Clinical Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Xiaoli Yi
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Shanshan Song
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Huiru Yang
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Jun Yu
- Center for Metabolic Disease Research and Department of Cardiovascular Sciences, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - Chuanming Xu
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang 330004, China.
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de Oliveira WV, Giarola LTP, Ferreira LGR, Schettini IVG, Turani SD, de Oliveira AR, Marinho MAS, Pinto SWL, Barros-Pinheiro M, de Figueiredo RC, Rios DRA. Inflammation and all-cause mortality in patients undergoing peritoneal dialysis. EINSTEIN-SAO PAULO 2024; 22:eAO0627. [PMID: 39140572 PMCID: PMC11323835 DOI: 10.31744/einstein_journal/2024ao0627] [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: 06/13/2023] [Accepted: 10/08/2023] [Indexed: 08/15/2024] Open
Abstract
OBJECTIVE This study aimed to evaluate inflammatory biomarkers in patients undergoing peritoneal dialysis and investigate their association with all-cause mortality or transfer to hemodialysis. METHODS This prospective cohort study included 43 patients undergoing peritoneal dialysis. Plasma levels of cytokines were measured using flow cytometry and capture enzyme-linked immunosorbent assay. Biomarkers were categorized based on their respective median values. Survival analysis was conducted using the Kaplan-Meier estimator, considering two outcomes: all-cause mortality and transfer to hemodialysis. RESULTS After adjusting for confounding factors, plasma levels above the median of the levels of CCL2 and plasma, as well as below the median of TNF-α, and the median of dialysate IL-17 levels, were associated with an increased risk of experiencing the specified outcomes after approximately 16 months of follow-up. CONCLUSION These findings suggest that inflammatory biomarkers may be a valuable tool for predicting all-cause mortality and transfer to hemodialysis in patients undergoing peritoneal dialysis.
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Affiliation(s)
| | - Luciane Teixeira Passos Giarola
- Department of Mathematics and StatisticsUniversidade de São João del-ReiSão João del-ReiMGBrazil Department of Mathematics and Statistics, Universidade de São João del-Rei, São João del-Rei, MG, Brazil.
| | | | | | - Sylvia Dias Turani
- Universidade de São João del-ReiDivinópolisMGBrazil Universidade de São João del-Rei, Divinópolis, MG, Brazil.
| | - Arlindo Ribeiro de Oliveira
- Nephrology CenterComplexo de Saúde São João de DeusDivinópolisMGBrazil Nephrology Center, Complexo de Saúde São João de Deus, Divinópolis, MG, Brazil.
| | - Maria Aparecida Silva Marinho
- Nephrology CenterComplexo de Saúde São João de DeusDivinópolisMGBrazil Nephrology Center, Complexo de Saúde São João de Deus, Divinópolis, MG, Brazil.
| | - Sérgio Wyton Lima Pinto
- Nephrology CenterComplexo de Saúde São João de DeusDivinópolisMGBrazil Nephrology Center, Complexo de Saúde São João de Deus, Divinópolis, MG, Brazil.
| | - Melina Barros-Pinheiro
- Universidade de São João del-ReiDivinópolisMGBrazil Universidade de São João del-Rei, Divinópolis, MG, Brazil.
| | | | - Danyelle Romana Alves Rios
- Universidade de São João del-ReiDivinópolisMGBrazil Universidade de São João del-Rei, Divinópolis, MG, Brazil.
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Fang H, Li X, Lin D, Wang L, Yang T, Yang B. Inhibition of intrarenal PRR-RAS pathway by Ganoderma lucidum polysaccharide peptides in proteinuric nephropathy. Int J Biol Macromol 2023; 253:127336. [PMID: 37852403 DOI: 10.1016/j.ijbiomac.2023.127336] [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: 07/16/2023] [Revised: 09/25/2023] [Accepted: 10/08/2023] [Indexed: 10/20/2023]
Abstract
Excessive proteinuria leads to renal dysfunction and damage. Ganoderma lucidum polysaccharide peptide (GL-PP) and Ganoderma lucidum polysaccharide peptide 2 (GL-PP2) are biologically active compounds extracted from Ganoderma lucidum. GL-PP has a relative molecular weight of 37,121 with 76.39 % polysaccharides and 16.35 % polypeptides, while GL-PP2 has a relative molecular weight of 31,130, composed of 64.14 % polysaccharides and 17.73 % polypeptides. The xylose: mannose: glucose monosaccharide ratios in GL-PP and GL-PP2 were 4.83:1:7.03 and 2.35:1:9.38, respectively. In this study, we investigated the protective effects of GL-PP and GL-PP2 on proteinuria-induced renal dysfunction and damage using rat and cell models. Both compounds reduced kidney injury, proteinuria, and inhibited the (pro)renin receptor (PRR)-renin-angiotensin system (RAS) pathway, inflammatory cell infiltration, oxidative stress, and fibrosis. GL-PP2 showed stronger inhibition of cyclooxygenase-2 and inducible nitric oxide synthase proteins compared to GL-PP. In cell models, both compounds displayed anti-inflammatory properties and improved cellular viability by inhibiting the PRR-RAS pathway. GL-PP2 has higher feasibility and productivity than GL-PP in pharmacology and industrial production. It shows promise in treating proteinuria-induced renal disease with superior anti-inflammatory effects and economic, safe industrial application prospects. Further research is needed to compare efficacy, mechanisms, clinical applications, and commercial feasibility of GL-PP and GL-PP2.
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Affiliation(s)
- Hui Fang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China.
| | - Xinxuan Li
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China
| | - Dongmei Lin
- National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fujian, Fuzhou 350002, China
| | - Lianfu Wang
- National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fujian, Fuzhou 350002, China
| | - Teng Yang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang 261053, Shandong, China
| | - Baoxue Yang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
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Fang H, Lin D, Li X, Wang L, Yang T. Therapeutic potential of Ganoderma lucidum polysaccharide peptide in Doxorubicin-induced nephropathy: modulation of renin-angiotensin system and proteinuria. Front Pharmacol 2023; 14:1287908. [PMID: 37841924 PMCID: PMC10570435 DOI: 10.3389/fphar.2023.1287908] [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: 09/03/2023] [Accepted: 09/21/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction: In the Doxorubicin (DOX)-induced nephropathy model, proteinuria is a manifestation of progressive kidney injury. The pathophysiology of renal illness is heavily influenced by the renin-angiotensin system (RAS). To reduce renal RAS activation and proteinuria caused by DOX, this study evaluated the effectiveness of Ganoderma lucidum polysaccharide peptide (GL-PP), a new glycopeptide produced from Ganoderma lucidum grown on grass. Methods: Three groups of BALB/c male mice were created: control, DOX, and DOX + GL-PP. GL-PP (100 mg/kg) was administered to mice by intraperitoneal injection for 4 weeks following a single intravenous injection of DOX (10 mg/kg via the tail vein). Results: After 4 weeks, full-length and soluble pro(renin) receptor (fPRR/sPRR) overexpression in DOX mouse kidneys, which is crucial for the RAS pathway, was dramatically inhibited by GL-PP therapy. Additionally, GL-PP successfully reduced elevation of urinary renin activity and angiotensin II levels, supporting the idea that GL-PP inhibits RAS activation. Moreover, GL-PP showed a considerable downregulation of nicotinamide adenine nucleotide phosphate oxidase 4 (NOX4) expression and a decrease in hydrogen peroxide (H2O2) levels. GL-PP treatment effectively reduced glomerular and tubular injury induced by DOX, as evidenced by decreased proteinuria, podocyte damage, inflammation, oxidative stress, apoptosis, and fibrosis. Discussion: GL-PP inhibits intrarenal PRR/sPRR-RAS activation and upregulation of NOX4 and H2O2, suggesting potential therapeutic approaches against DOX-induced nephropathy.
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Affiliation(s)
- Hui Fang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, Shandong, China
| | - Dongmei Lin
- National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Xinxuan Li
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, Shandong, China
| | - Lianfu Wang
- National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Teng Yang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, Shandong, China
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Fang H, Yang T, Zhou B, Li X. (Pro)Renin Receptor Decoy Peptide PRO20 Protects against Oxidative Renal Damage Induced by Advanced Oxidation Protein Products. Molecules 2023; 28:molecules28073017. [PMID: 37049779 PMCID: PMC10096258 DOI: 10.3390/molecules28073017] [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: 02/23/2023] [Revised: 03/20/2023] [Accepted: 03/24/2023] [Indexed: 03/30/2023] Open
Abstract
Chronic kidney disease (CKD) is associated with advanced oxidation protein products (AOPPs). A recent study has shown that AOPP-induced renal tubular injury is mediated by the (pro)renin receptor (PRR). However, it is unclear whether the PRR decoy inhibitor PRO20 can protect against renal damage related to AOPPs in vivo. In this study, we examined the role of the PRR in rats with AOPP-induced renal oxidative damage. Male SD rats were subjected to unilateral nephrectomy, and after a four-day recuperation period, they were randomly divided into four groups (n = 6/group) for four weeks: control (CTR), unmodified rat serum albumin (RSA, 50 mg/kg/day via tail-vein injection), AOPPs-RSA (50 mg/kg/day via tail-vein injection), and AOPPs-RSA + PRO20 (50 mg/kg/day via tail-vein injection + 500 μg/kg/day via subcutaneous injection) groups. PRO20 was administered 3 days before AOPPs-RSA injection. Renal histopathology evaluation was performed by periodic acid–Schiff (PAS) staining, and biochemical parameters related to renal injury and oxidative stress biomarkers were evaluated. The expression of related indicators was quantified by RT-qPCR and immunoblotting analysis. In the results, rats in the AOPPs-RSA group exhibited higher levels of albuminuria, inflammatory cell infiltration, and tubular dilation, along with upregulation of oxidative stress, profibrotic and proinflammatory factors, and elevation of AOPP levels. Meanwhile, in the PRO20 group, these were significantly reduced. Moreover, the levels of almost all components of the renin-angiotensin system (RAS) and Nox4-dependent H2O2 production in urine and the kidneys were elevated by AOPPs-RSA, while they were suppressed by PRO20. Furthermore, AOPPs-RSA rats showed elevated kidney expression of the PRR and soluble PRR (sPRR) and increased renal excretion of sPRR. In summary, these findings suggest that PRR inhibition may serve as a protective mechanism against AOPP-induced nephropathy by inhibiting the intrarenal RAS and Nox4-derived H2O2 mechanisms.
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7
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(Pro)Renin Receptor Antagonism Attenuates High-Fat-Diet-Induced Hepatic Steatosis. Biomolecules 2023; 13:biom13010142. [PMID: 36671527 PMCID: PMC9855393 DOI: 10.3390/biom13010142] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/20/2022] [Accepted: 01/03/2023] [Indexed: 01/12/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) comprises a spectrum of liver damage directly related to diabetes, obesity, and metabolic syndrome. The (pro)renin receptor (PRR) has recently been demonstrated to play a role in glucose and lipid metabolism. Here, we test the hypothesis that the PRR regulates the development of diet-induced hepatic steatosis and fibrosis. C57Bl/6J mice were fed a high-fat diet (HFD) or normal-fat diet (NFD) with matching calories for 6 weeks. An 8-week methionine choline-deficient (MCD) diet was used to induce fibrosis. Two weeks following diet treatment, mice were implanted with a subcutaneous osmotic pump delivering either the peptide PRR antagonist, PRO20, or scrambled peptide for 4 or 6 weeks. Mice fed a 6-week HFD exhibited increased liver lipid accumulation and liver triglyceride content compared with NFD-fed mice. Importantly, PRO20 treatment reduced hepatic lipid accumulation in HFD-fed mice without affecting body weight or blood glucose. Furthermore, PRR antagonism attenuated HFD-induced steatosis, particularly microvesicular steatosis. In the MCD diet model, the percentage of collagen area was reduced in PRO20-treated compared with control mice. PRO20 treatment also significantly decreased levels of liver alanine aminotransferase, an indicator of liver damage, in MCD-fed mice compared with controls. Mechanistically, we found that PRR antagonism prevented HFD-induced increases in PPARγ and glycerol-3-phosphate acyltransferase 3 expression in the liver. Taken together, our findings establish the involvement of the PRR in liver triglyceride synthesis and suggest the therapeutic potential of PRR antagonism for the treatment of liver steatosis and fibrosis in NAFLD.
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Fu Z, Zheng H, Kaewsaro K, Lambert J, Chen Y, Yang T. Mutagenesis of the cleavage site of (pro)renin receptor abrogates aldosterone-salt-induced hypertension and renal injury in mice. Am J Physiol Renal Physiol 2023; 324:F1-F11. [PMID: 36302140 PMCID: PMC9762973 DOI: 10.1152/ajprenal.00088.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 09/29/2022] [Accepted: 10/17/2022] [Indexed: 02/04/2023] Open
Abstract
Soluble (pro)renin receptor (sPRR), the extracellular domain of (pro)renin receptor (PRR), is primarily generated by site-1 protease and furin. It has been reported that sPRR functions as an important regulator of intrarenal renin contributing to angiotensin II (ANG II)-induced hypertension. Relatively, less is known for the function of sPRR in ANG II-independent hypertension such as mineralocorticoid excess. In the present study, we used a novel mouse model with mutagenesis of the cleavage site in PRR (termed as PRRR279V/L282V or mutant) to examine the phenotype during aldosterone (Aldo)-salt treatment. The hypertensive response of mutant mice to Aldo-salt treatment was blunted in parallel with the attenuated response of plasma volume expansion and renal medullary α-epithelial Na+ channel expression. Moreover, Aldo-salt-induced hypertrophy in the heart and kidney as well as proteinuria were improved, accompanied by blunted polydipsia and polyuria. Together, these results represent strong evidence favoring endogenous sPRR as a mediator of Aldo-salt-induced hypertension and renal injury.NEW & NOTEWORTHY We used a novel mouse model with mutagenesis of the cleavage site of PRR to support soluble PRR as an essential mediator of aldosterone-salt-induced hypertension and also as a potential therapeutic target for patients with mineralocorticoid excess. We firstly report that soluble PRR-dependent pathway medicates the Na+-retaining action of aldosterone in the distal nephron, which opens up a new area for a better understanding of the molecular basis of renal handling of Na+ balance and blood pressure.
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Affiliation(s)
- Ziwei Fu
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, Utah
| | - Huaqing Zheng
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, Utah
- Renal Section, Veterans Affairs Salt Lake City Health Care System, Salt Lake City, Utah
| | - Kannaree Kaewsaro
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, Utah
| | - Jacob Lambert
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, Utah
| | - Yanting Chen
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, Utah
| | - Tianxin Yang
- Division of Nephrology and Hypertension, University of Utah, Salt Lake City, Utah
- Renal Section, Veterans Affairs Salt Lake City Health Care System, Salt Lake City, Utah
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Yang T. Potential of soluble (pro)renin receptor in kidney disease: can it go beyond a biomarker? Am J Physiol Renal Physiol 2022; 323:F507-F514. [PMID: 36074917 PMCID: PMC9602801 DOI: 10.1152/ajprenal.00202.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 12/14/2022] Open
Abstract
(Pro)renin receptor (PRR), also termed ATPase H+-transporting accessory protein 2 (ATP6AP2), is a type I transmembrane receptor and is capable of binding and activating prorenin and renin. Apart from its association with the renin-angiotensin system, PRR has been implicated in diverse developmental, physiological, and pathophysiological processes. Within the kidney, PRR is predominantly expressed in the distal nephron, particularly the intercalated cells, and activation of renal PRR contributes to renal injury in various rodent models of chronic kidney disease. Moreover, recent evidence demonstrates that PRR is primarily cleaved by site-1 protease to produce 28-kDa soluble PRR (sPRR). sPRR seems to mediate most of the known pathophysiological functions of renal PRR through modulating the activity of the intrarenal renin-angiotensin system and provoking proinflammatory and profibrotic responses. Not only does sPRR activate renin, but it also directly binds and activates the angiotensin II type 1 receptor. This review summarizes recent advances in understanding the roles and mechanisms of sPRR in the context of renal pathophysiology.
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Affiliation(s)
- Tianxin Yang
- Department of Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, Utah
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Yang T. Soluble (Pro)Renin Receptor in Hypertension. Nephron Clin Pract 2022; 147:234-243. [PMID: 35871512 PMCID: PMC9867785 DOI: 10.1159/000525635] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/27/2022] [Indexed: 01/26/2023] Open
Abstract
The (pro)renin receptor (PRR) was originally cloned as a specific single-transmembrane receptor for prorenin and renin and has now emerged as a multifunctional protein implicated in a wide variety of developmental and physiopathological processes. Activation of PRR in the kidney causes Na+ and water retention, contributing to elevation of blood pressure in response to various hypertensive stimuli. Part of the renal action of PRR depends on activation of intrarenal renin-angiotensin system. In recent years, accumulating evidence suggests that the prohypertensive action of renal PRR was largely mediated by production of the 28-kDa soluble (pro)renin receptor through protease-mediated cleavage of the extracellular domain of PRR. The generation of multiple isoforms of PRR due to the protease-mediated cleavage partially explains diversified actions of PRR. The current review will summarize recent advances in understanding the roles of sPPR in animal models of hypertension.
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Affiliation(s)
- Tianxin Yang
- Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, Utah, USA
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11
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Hu J, Tan Y, Chen Y, Mo S, Hekking B, Su J, Pu M, Lu A, Symons JD, Yang T. Role of (Pro)Renin Receptor in Cyclosporin A-Induced Nephropathy. Am J Physiol Renal Physiol 2022; 322:F437-F448. [PMID: 35073210 PMCID: PMC9662808 DOI: 10.1152/ajprenal.00332.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Calcineurin inhibitors (CNIs) such as cyclosporin A (CsA) have been widely used to improve graft survival following solid-organ transplantation. However, the clinical use of CsA is often limited by its nephrotoxicity. The present study tested the hypothesis that activation of (pro)renin receptor (PRR) contributes to CsA-induced nephropathy by activating the renin-angiotensin system (RAS). Renal injury in male Sprague-Dawley rats was induced by a low-salt diet combined with CsA as evidenced by elevated plasma creatinine and BUN levels, decreased creatinine clearance and induced renal inflammation, apoptosis as well as interstitial fibrosis, elevated urinary N-acetyl-β-D-glucosaminidase activity and urinary kidney injury molecular 1 content. Each index of renal injury was attenuated following a 2-wk treatment with a PRR decoy inhibitor PRO20. While CsA rats with kidney injury displayed increased renal sPRR abundance, plasma sPRR, renin activity, Ang II, and heightened urinary total prorenin/renin content; RAS activation was attenuated by PRO20. Exposure of cultured human renal proximal tubular HK-2 cells to CsA induced expression of fibronectin and sPRR production, but the fibrotic response was attenuated by PRO20 and siRNA-mediated PRR knockdown. These findings support the hypothesis that activation of PRR contributes to CsA-induced nephropathy by activating the RAS in rats. Of importance, we provide strong proof of concept that targeting PRR offers a novel therapeutic strategy to limit nephotoxic effects of immunosuppressant drugs.
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Affiliation(s)
- Jiajia Hu
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yandan Tan
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yanting Chen
- Department of Internal Medicine, University of Utah School of Medicine and Veterans Affairs Medical Center, Salt Lake City, Utah, United States
| | - Shiqi Mo
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Brittin Hekking
- Department of Internal Medicine, University of Utah School of Medicine and Veterans Affairs Medical Center, Salt Lake City, Utah, United States
| | - Jiahui Su
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Min Pu
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Aihua Lu
- Institute of Hypertension, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - J. David Symons
- Department of Nutrition and Integrative Physiology; Division of Endocrinology, Metabolism, and Diabetes, Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, Utah
| | - Tianxin Yang
- Department of Internal Medicine, University of Utah School of Medicine and Veterans Affairs Medical Center, Salt Lake City, Utah, United States
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Lu Z, Zhu X, Ye Y, Fu H, Mao J. PP2A protects podocytes against Adriamycin-induced injury and epithelial-to-mesenchymal transition via suppressing JIP4/p38-MAPK pathway. Cytotechnology 2021; 73:697-713. [PMID: 34629746 DOI: 10.1007/s10616-021-00484-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 06/21/2021] [Indexed: 02/06/2023] Open
Abstract
Protein phosphatase 2A (PP2A) is one of the major protein serine/threonine phosphatases (PPPs) with regulatory effects on several cellular processes, but its role and function in Adriamycin (ADR)-treated podocytes injury needs to be further explored. Mice podocytes were treated with ADR and PP2A inhibitor (okadaic acid, OA). After transfection, cell apoptosis was detected by flow cytometry. Expressions of podocytes injury-, apoptosis- and epithelial-to-mesenchymal transition (EMT)- and JNK-interacting protein 4/p38-Mitogen-Activated Protein Kinase (JIP4/p38-MAPK) pathway-related factors were measured using quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot as needed. Interaction between PP2A and JIP4/MAPK pathway was confirmed using co-immunoprecipitation (Co-Ip) assay. In podocytes, ADR inhibited PP2A, Nephrin and Wilms' tumor (WT) 1 expressions yet upregulated apoptosis and Desmin expression, and suppressing PP2A expressionenhanced the effects. PP2A overexpression reversed the effects of ADR on PP2A and podocyte injury-related factors expressions and apoptosis of podocytes. JIP4 was the candidate gene interacting with both PP2A and p38-MAPK pathway, and PP2A overexpression alleviated the effects of ADR on p38-MAPK pathway-related factors expressions. Additionally, in ADR-treated podocytes, PP2A suppression enhanced the effects of ADR, yet silencing of JIP4 reversed the effects of PP2A suppression on regulating p38-MAPK pathway-, apoptosis- and EMT-related factors expressions and apoptosis, with upregulations of B-cell lymphoma-2 (Bcl-2) and E-cadherin and down-regulations of Bcl-2 associated protein X (Bax), cleaved (C)-casapse-3, N-cadherin, Vimentin and Snail. PP2A protects ADR-treated podocytes against injury and EMT by suppressing JIP4/p38-MAPK pathway, showing their interaction in podocytes.
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Affiliation(s)
- Zhihong Lu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Xiujuan Zhu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Yuhong Ye
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Haidong Fu
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
| | - Jianhua Mao
- Department of Nephrology, The Children's Hospital, Zhejiang University School of Medicine, No. 3333 Binsheng Road, Binjiang District, Hangzhou, 310052 Zhejiang China
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Xu C, Chen Y, Wang F, Xie S, Yang T. Soluble (Pro)Renin Receptor as a Negative Regulator of NCC (Na +-Cl - Cotransporter) Activity. Hypertension 2021; 78:1027-1038. [PMID: 34495675 PMCID: PMC9212213 DOI: 10.1161/hypertensionaha.121.16981] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 06/02/2021] [Indexed: 12/15/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Chuanming Xu
- Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, Utah, the United States
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China
| | - Yanting Chen
- Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, Utah, the United States
| | - Fei Wang
- Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, Utah, the United States
| | - Shiying Xie
- Institute of Hypertension, Sun Yat-sen University School of Medicine, Guangzhou, China
| | - Tianxin Yang
- Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, Utah, the United States
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Qin M, Xu C, Yu J. The Soluble (Pro)Renin Receptor in Health and Diseases: Foe or Friend? J Pharmacol Exp Ther 2021; 378:251-261. [PMID: 34158404 DOI: 10.1124/jpet.121.000576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 06/14/2021] [Indexed: 11/22/2022] Open
Abstract
The (pro)renin receptor (PRR) is a single-transmembrane protein that regulates the local renin-angiotensin system and participates in various intracellular signaling pathways, thus exhibiting a significant physiopathologic relevance in cellular homeostasis. A soluble form of PRR (sPRR) is generated through protease-mediated cleavage of the full-length PRR and secreted into extracellular spaces. Accumulating evidence indicates pivotal biologic functions of sPRR in various physiopathological processes. sPRR may be a novel biomarker for multiple diseases. SIGNIFICANCE STATEMENT: Circulating sPRR concentrations are elevated in patients and animals under various physiopathological conditions. This minireview highlights recent advances in sPRR functions in health and pathophysiological conditions. Results suggest that sPRR may be a novel biomarker for multiple diseases, but further studies are needed to determine the diagnostic value of sPRR.
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Affiliation(s)
- Manman Qin
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China (M.Q., C.X.), and Center for Metabolic Disease Research and Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania (J.Y.)
| | - Chuanming Xu
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China (M.Q., C.X.), and Center for Metabolic Disease Research and Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania (J.Y.)
| | - Jun Yu
- Translational Medicine Centre, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi, China (M.Q., C.X.), and Center for Metabolic Disease Research and Department of Physiology, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania (J.Y.)
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Wang Y, Wang Y, Xue K, Wang H, Zhou J, Gao F, Li C, Yang T, Fang H. (Pro)renin receptor antagonist PRO20 attenuates nephrectomy-induced nephropathy in rats via inhibition of intrarenal RAS and Wnt/β-catenin signaling. Physiol Rep 2021; 9:e14881. [PMID: 34057312 PMCID: PMC8165733 DOI: 10.14814/phy2.14881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/27/2021] [Accepted: 04/27/2021] [Indexed: 12/25/2022] Open
Abstract
Introduction (Pro)renin receptor has emerged as a new member of the renin‐angiotensin system implicated in the pathogenesis of chronic kidney disease (CKD). Herein we report characterization of the therapeutic potential of (pro)renin receptor (PRR) antagonist PRO20 in 5/6 nephrectomy (5/6Nx) rats. Methods Male Wistar rats underwent 5/6Nx followed by treatment with vehicle or received daily injections of a PRR inhibitor PRO20 (700 μg/kg) via the 3 s.c. Sham group served as a control. Results As compared with the sham control, the 5/6Nx rats exhibited significant increases in proteinuria, glomerulosclerosis, tubular injury, and interstitial inflammation in the remnant kidneys. Treatment with PRO20 significantly attenuated these abnormalities, as evidenced by reduced expression of fibronectin, α‐SMA, collagen 1, TGF‐β1, IL‐6, IL‐8, IL‐1β, MCP‐1 and increased expression of E‐cadherin. Increased urinary/renal levels of renin activity, angiotensinogen (AGT), and Angiotensin II (Ang II) by 5/6Nx, which were all ameliorated by PRO20. Renal PRR, the secreted proteolytic fragment of PRR (sPRR) in renal and urinary, were all elevated in 5/6Nx rats. Moreover, our results revealed that renal Wnt3A and β‐catenin expression were upregulated during 5/6Nx, which were all attenuated by PRO20. Conclusions Overall we conclude that in vivo antagonism of PRR with PRO20 will improve 5/6Nx‐induced CKD mainly through inhibition of intrarenal RAS and Wnt/β‐catenin signaling pathway.
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Affiliation(s)
- Yan Wang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Yurong Wang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Kai Xue
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Huaijie Wang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Jingjing Zhou
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Feng Gao
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Chengde Li
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
| | - Tianxin Yang
- Department of Internal Medicine, University of Utah and Veterans Affairs Medical Center, Salt Lake City, UT, USA
| | - Hui Fang
- Key Laboratory of Applied Pharmacology in Universities of Shandong, Department of Pharmacology, School of Pharmacy, Weifang Medical University, Weifang, China
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Arthur G, Osborn JL, Yiannikouris FB. (Pro)renin receptor in the kidney: function and significance. Am J Physiol Regul Integr Comp Physiol 2021; 320:R377-R383. [PMID: 33470188 DOI: 10.1152/ajpregu.00259.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
(Pro)renin receptor (PRR), a 350-amino acid receptor initially thought of as a receptor for the binding of renin and prorenin, is multifunctional. In addition to its role in the renin-angiotensin system (RAS), PRR transduces several intracellular signaling molecules and is a component of the vacuolar H+-ATPase that participates in autophagy. PRR is found in the kidney and particularly in great abundance in the cortical collecting duct. In the kidney, PRR participates in water and salt balance, acid-base balance, and autophagy and plays a role in development and progression of hypertension, diabetic retinopathy, and kidney fibrosis. This review highlights the role of PRR in the development and function of the kidney, namely, the macula densa, podocyte, proximal and distal convoluted tubule, and the principal cells of the collecting duct, and focuses on PRR function in body fluid volume homeostasis, blood pressure regulation, and acid-base balance. This review also explores new advances in the molecular mechanism involving PRR in normal renal health and pathophysiological states.
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Affiliation(s)
- Gertrude Arthur
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, Kentucky
| | - Jeffrey L Osborn
- Department of Biology, University of Kentucky, Lexington, Kentucky
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