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El-Araby RE, Tu Q, Xie Y, Aboushousha T, Li Z, Xu X, Zhu ZX, Dong LQ, Chen J. Adiponectin mRNA Conjugated with Lipid Nanoparticles Specifically Targets the Pathogenesis of Type 2 Diabetes. Aging Dis 2024:AD.2024.0162. [PMID: 38916734 DOI: 10.14336/ad.2024.0162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 05/15/2024] [Indexed: 06/26/2024] Open
Abstract
Type 2 diabetes (T2D) is a widespread health condition both in the United States and around the world, with insulin resistance playing a critical role in its development. Effective treatment strategies are essential for managing T2D and mitigating associated risks. Adiponectin (APN), secreted by adipocytes, exhibits an inverse correlation with obesity-related adiposity, and its levels are negatively associated with insulin resistance and body mass index. This study aimed to enhance endogenous APN levels in a diet-induced obese (DIO) mouse model using lipid nanoparticles (LNP) as safe delivery agents for APN mRNA conjugates. The results indicate that APN-mRNA-LNP administration successfully induced APN synthesis in various tissues, including muscle, liver, kidney, pancreas, and adipose cells. This induction was associated with several positive outcomes, such as preventing diet-induced body weight gain, improving hyperglycemia by promoting Glut-4 expression, alleviating diabetic nephropathy symptoms by blocking the EGFR pathway, and reducing pro-inflammatory cytokine production. In addition, the treatment demonstrated enhanced insulin sensitivity by activating DGKd and inhibiting PKCε. This resulted in reactivation of insulin receptors in insulin target tissues and stimulation of insulin secretion from pancreatic beta cells. The findings of the present study highlight the potential of APN-mRNA-LNP-based nucleic acid therapy as a treatment for type 2 diabetes, offering a comprehensive approach to addressing its complexities.
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Affiliation(s)
- Rady E El-Araby
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
- Theodor Bilharz Research Institute, Ministry of scientific Research, Cairo, Egypt
| | - Qisheng Tu
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | - Ying Xie
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | - Tarek Aboushousha
- Theodor Bilharz Research Institute, Ministry of scientific Research, Cairo, Egypt
| | - Zhongyu Li
- Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ, USA
| | - Xiaoyang Xu
- Department of Chemical and Materials Engineering, New Jersey Institute of Technology, Newark, NJ, USA
| | - Zoe X Zhu
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
| | - Lily Q Dong
- Department of Cell Systems and Anatomy, The University of Texas Health San Antonio, San Antonio, Texas 78229, USA
| | - Jake Chen
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
- Department of Genetics, Molecular and Cellular Biology, Tufts University School of Medicine, and Graduate School of Biomedical Sciences. 136 Harrison Ave, M&;ampV 811, Boston, MA 02111, USA
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2
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Jiang S, Su H. Exploration of the shared gene signatures and biological mechanisms between ischemia-reperfusion injury and antibody-mediated rejection in renal transplantation. Transpl Immunol 2024; 83:102001. [PMID: 38266883 DOI: 10.1016/j.trim.2024.102001] [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: 06/17/2023] [Revised: 12/22/2023] [Accepted: 01/20/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Antibody-mediated rejection (ABMR) plays a crucial role in graft loss during allogeneic renal transplantation. In renal transplantation, ischemia-reperfusion injury (IRI) is unavoidable, serves as a major contributor to acute rejection, and is linked to graft loss. However, the mechanisms underlying IRI and ABMR are unclear. Therefore, this study aimed to investigate the shared genetic characteristics and biological mechanisms between IRI and ABMR. METHODS Gene expressions for IRI (GSE43974) and ABMR (GSE129166 and GSE36059) were retrieved from the Gene Expression Omnibus database. The shared differentially expressed genes (DEGs) of IRI and ABMR were identified, and subsequent functional enrichment analysis was performed. Immune cell infiltration in ABMR and its relationship with the shared DEGs were investigated using the CIBERSORT method. Random forest analysis, a protein-protein interaction network, and Cytoscape were used to screen hub genes, which were subsequently subjected to gene set enrichment analysis, miRNA prediction, and transcription factors analysis. The survival analysis was performed through Kaplan-Meier curves. Finally, drug compound prediction was performed on the shared DEGs using the Drug Signature Database. RESULTS Overall, 27 shared DEGs were identified between the renal IRI and ABMR groups. Among these, 24 genes exhibited increased co-expression, whereas none showed decreased co-expression. The shared DEGs were primarily enriched in the inflammation signaling pathways. Notably, CD4 memory T cells were identified as potential critical mediators of IRI, leading to ABMR. Tumor necrosis factor alpha-induced protein 3 (TNFAIP3), interferon regulatory factor 1 (IRF1), and early growth response 2 (EGR2) were identified as key components in the potential mechanism that link IRI and ABMR. Patients undergoing renal transplantation with higher expression levels of TNFAIP3, IRF1, and EGR2 exhibited decreased survival rates compared to those with lower expression levels. CONCLUSION Inflammation is a key mechanism that links IRI and ABMR, with a potential role played by CD4 memory T cells. Furthermore, TNFAIP3, IRF1, and EGR2 are implicated in the underlying mechanism between IRI and ABMR.
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Affiliation(s)
- Shan Jiang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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3
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Neyra JA, Moe OW. Bone Dysregulation in Acute Kidney Injury. Nephron Clin Pract 2023; 147:747-753. [PMID: 37757785 DOI: 10.1159/000534228] [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: 07/03/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
Acute kidney injury (AKI) is a highly prevalent condition with multiple acute and chronic consequences. Survivors of AKI are at risk of AKI-to-chronic kidney disease (CKD) transition, which carries significant morbidity and mortality. One retrospective analysis showed increased risk of bone fracture post-AKI in humans, which was independent of CKD development. While there are several theoretical reasons for late disturbances of bone health post-AKI, no definitive data are available to date. An important question is whether there are bone sequelae from AKI that are independent of CKD, meaning bone disease prior to the onset, or in the absence of CKD - a form of "post-AKI osteopathy." While preclinical studies examining bone health after acute stressors have focused mostly on sepsis models, multiple experimental AKI models are readily available for longitudinal bone health interrogation. Future research should be tailored to define whether AKI is a risk factor, independent of CKD, for bone disease and if present, the time course and type of bone disease. This review summarizes a fraction of the existing data to provide some guidance in future research efforts.
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Affiliation(s)
- Javier A Neyra
- Department of Medicine, University of Alabama, Birmingham, Alabama, USA
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Orson W Moe
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Departments of Internal Medicine and Physiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
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Copur S, Demiray A, Basile C, Kanbay M. Endocrinological disorders in acute kidney injury: an often overlooked field of clinical research. J Nephrol 2023; 36:885-893. [PMID: 36652168 DOI: 10.1007/s40620-022-01554-z] [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: 09/14/2022] [Accepted: 12/05/2022] [Indexed: 01/19/2023]
Abstract
Acute kidney injury (AKI) is a common comorbidity, affecting approximately one in five hospitalized adults. The kidney is the site for the production, metabolism or excretion of most hormones, including the production of erythropoietin (EPO), the active form of vitamin D, renin, thrombopoietin, and the excretion of insulin, catecholamines, gastrin and many other hormones. Therefore, it is reasonable to say that AKI can have a considerable impact on the endocrine system. Although the effects of AKI on various parameters, including cardiovascular parameters, serum electrolytes and acid-base disorders, neuro-humoral mechanisms and neurological outcomes have been extensively studied, the endocrinological consequences of AKI are understudied. Thyroid dysfunction, mainly euthyroid sick syndrome, hypo/hyperglycemia, bone mineral disorders, changes in EPO and atrial natriuretic peptide (ANP) levels are commonly found in AKI. EPO, thyroxine and ANP administration have been evaluated as potential tools to prevent or treat AKI with varying success, while the effects of AKI on some key hormones, including cortisol and insulin, have never been studied. Aim of this narrative review is to illustrate what is known and what is not known about the endocrinological outcomes of AKI. Few clinical trials are ongoing: however, there is a clear need for large-scale randomized controlled trials investigating the endocrinological consequences of AKI.
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Affiliation(s)
- Sidar Copur
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Atalay Demiray
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Carlo Basile
- Associazione Nefrologica Gabriella Sebastio, Martina Franca, Italy.
| | - Mehmet Kanbay
- Department of Medicine, Division of Nephrology, Koc University School of Medicine, Istanbul, Turkey
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5
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Li J, Jiang Y, Dai Q, Yu Y, Lv X, Zhang Y, Liao X, Ao L, Hu G, Meng J, Peng Z, Tao L, Xie Y. Protective effects of mefunidone on ischemia-reperfusion injury/Folic acid-induced acute kidney injury. Front Pharmacol 2022; 13:1043945. [PMID: 36506525 PMCID: PMC9727196 DOI: 10.3389/fphar.2022.1043945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/07/2022] [Indexed: 11/24/2022] Open
Abstract
Renal ischemia-reperfusion injury (IRI) is one of the most common causes of acute kidney injury (AKI). It poses a significant threat to public health, and effective therapeutic drugs are lacking. Mefunidone (MFD) is a new pyridinone drug that exerts a significant protective effect on diabetic nephropathy and the unilateral ureteral obstruction (UUO) model in our previous study. However, the effects of mefunidone on ischemia-reperfusion injury-induced acute kidney injury remain unknown. In this study, we investigated the protective effect of mefunidone against ischemia-reperfusion injury-induced acute kidney injury and explored the underlying mechanism. These results revealed that mefunidone exerted a protective effect against ischemia-reperfusion injury-induced acute kidney injury. In an ischemia-reperfusion injury-induced acute kidney injury model, treatment with mefunidone significantly protected the kidney by relieving kidney tubular injury, suppressing oxidative stress, and inhibiting kidney tubular epithelial cell apoptosis. Furthermore, we found that mefunidone reduced mitochondrial damage, regulated mitochondrial-related Bax/bcl2/cleaved-caspase3 apoptotic protein expression, and protected mitochondrial electron transport chain complexes III and V levels both in vivo and in vitro, along with a protective effect on mitochondrial membrane potential in vitro. Given that folic acid (FA)-induced acute kidney injury is a classic model, we used this model to further validate the efficacy of mefunidone in acute kidney injury and obtained the same conclusion. Based on the above results, we conclude that mefunidone has potential protective and therapeutic effects in both ischemia-reperfusion injury- and folic acid-induced acute kidney injury.
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Affiliation(s)
- Jiajia Li
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China,Hunan Key Lab of Organ Fibrosis, Changsha, China,National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, China
| | - Yupeng Jiang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China,Hunan Key Lab of Organ Fibrosis, Changsha, China,National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, China,Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qin Dai
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Yue Yu
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Xin Lv
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Yan Zhang
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Xiaohua Liao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Liyun Ao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China
| | - Gaoyun Hu
- Department of Medicinal Chemistry, Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Jie Meng
- Hunan Key Lab of Organ Fibrosis, Changsha, China,Department of Pulmonary and Critical Care Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhangzhe Peng
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China,Hunan Key Lab of Organ Fibrosis, Changsha, China,National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, China
| | - Lijian Tao
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China,Hunan Key Lab of Organ Fibrosis, Changsha, China,National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, China
| | - Yanyun Xie
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China,Hunan Key Lab of Organ Fibrosis, Changsha, China,National International Collaborative Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, China,*Correspondence: Yanyun Xie,
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6
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Phosphoinositide 3 Kinase γ Plays a Critical Role in Acute Kidney Injury. Cells 2022; 11:cells11050772. [PMID: 35269396 PMCID: PMC8909888 DOI: 10.3390/cells11050772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 02/05/2022] [Accepted: 02/17/2022] [Indexed: 11/17/2022] Open
Abstract
Inflammatory cells contribute to the pathogenesis of renal ischemia-reperfusion injury (IRI). However, the signaling mechanisms underlying the infiltration of inflammatory cells into the kidney are not well understood. In this study, we examined the effects of phosphoinositide 3 kinase γ (PI3Kγ) on inflammatory cells infiltration into the kidney in response to ischemia-reperfusion injury. Compared with wild-type mice, PI3Kγ knockout mice displayed less IRI in the kidney with fewer tubular apoptotic cell. Furthermore, PI3Kγ deficiency decreased the number of infiltrated neutrophils, macrophages, and T cells in the kidney, which was accompanied by a decrease in the expression of pro-inflammatory cytokines in the kidney. Moreover, wild-type mice treated with AS-605240, a selective PI3Kγ inhibitor, displayed less tubular damage, accumulated fewer inflammatory cells, and expressed less proinflammatory molecules in the kidney following IRI. These results demonstrate that PI3Kγ has a critical role in the pathogenesis of kidney damage in IRI, indicating that PI3Kγ inhibition may serve as a potential therapeutic strategy for the prevention of ischemia-reperfusion-induced kidney injury.
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7
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An C, Jiao B, Du H, Tran M, Zhou D, Wang Y. Myeloid PTEN deficiency aggravates renal inflammation and fibrosis in angiotensin II-induced hypertension. J Cell Physiol 2022; 237:983-991. [PMID: 34515350 PMCID: PMC8810675 DOI: 10.1002/jcp.30574] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/24/2021] [Accepted: 08/26/2021] [Indexed: 01/03/2023]
Abstract
Hypertension is a major cause of chronic kidney disease. However, the pathogenesis of hypertensive kidney disease is not fully understood. Recently, we have shown that CXCL16/phosphoinositide-3 kinase γ (PI3Kγ) plays an important role in the development of renal inflammation and fibrosis in angiotensin II (AngII) induced hypertensive nephropathy. In the present study, we examined the role of phosphatase and tensin homolog (PTEN), a major regulator of PI3K signaling, in the pathogenesis of renal inflammation and fibrosis in an experimental model of hypertension induced by AngII. We generated myeloid PTEN conditional knockout mice by crossing PTENflox/flox mice with LysM-driven Cre mice. Littermate LysM-Cre-/- PTENflox/flox mice were used as a control. Both myeloid PTEN knockout mice and their littermate control mice exhibited similar blood pressure at baseline. AngII treatment resulted in an increase in blood pressure that was comparable between myeloid PTEN knockout mice and littermate control mice. Compared with littermate control mice, myeloid PTEN knockout mice developed more severe kidney dysfunction, proteinuria, and fibrosis following AngII treatment. Furthermore, myeloid PTEN deficiency exacerbated total collagen deposition and extracellular matrix protein production and enhanced myeloid fibroblast accumulation and myofibroblast formation in the kidney following AngII treatment. Finally, myeloid PTEN deficiency markedly augmented infiltration of F4/80+ macrophages and CD3+ T cells into the kidneys of AngII-treated mice. Taken together, these results indicate that PTEN plays a crucial role in the pathogenesis of renal inflammation and fibrosis through the regulation of infiltration of myeloid fibroblasts, macrophages, and T lymphocytes into the kidney.
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Affiliation(s)
- Changlong An
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Baihai Jiao
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Hao Du
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Melanie Tran
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Dong Zhou
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut, USA
| | - Yanlin Wang
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut, USA,Department of Cell Biology, University of Connecticut School of Medicine, Farmington, Connecticut, USA,Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut, USA
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8
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Fumeron F, El Boustany R, Bastard JP, Fellahi S, Balkau B, Marre M, Venteclef N, Velho G, Roussel R. Plasma total adiponectin and changes in renal function in a cohort from the community: the prospective Data from an Epidemiological Study on the Insulin Resistance Syndrome study. Nephrol Dial Transplant 2021; 36:2058-2065. [PMID: 33141880 DOI: 10.1093/ndt/gfaa228] [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: 01/08/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND High adiponectin levels are associated with diabetic nephropathy. Nevertheless, it is not known whether plasma adiponectin is associated with renal function decline in the general population. We evaluated whether adiponectin concentrations were associated with changes in renal function in a community cohort, the Data from an Epidemiological Study on the Insulin Resistance Syndrome (DESIR) study. METHODS Plasma adiponectin concentrations were measured in a random sample of 3284 people from the DESIR study, a 9-year prospective cohort from the general population. Data were analysed for three endpoints during follow-up: incidence of Stage 3 chronic kidney disease (CKD); the Kidney Disease: Improving Global Outcomes (KDIGO) criterion 'certain drop in eGFR' and rapid kidney function decline [estimated glomerular filtration rate (eGFR) slope steeper than -3 mL/min/1.73 m2/year]. RESULTS After exclusion of participants with an eGFR <60 mL/min/1.73 m2 at baseline and those with type 2 diabetes or impaired fasting glycaemia at any time during follow-up (remaining n = 2174), there was a 113% higher risk for a rapid decline in kidney function in participants with adiponectin above the third tertile (T3) versus below the first tertile (T1) (Ptrend = 0.004) and a 53% higher risk for kidney function decline as defined by the KDIGO criterion (Ptrend = 0.04). In a cross-sectional analysis, adiponectin was positively associated with urinary albumin:creatinine ratio at baseline (P = 0.009). CONCLUSIONS In a healthy cohort from the general population, higher levels of plasma adiponectin were associated with decreased renal function at baseline and at follow-up. This result is similar to what is observed in people with diabetic nephropathy, in contrast with animal models of nephropathy.
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Affiliation(s)
| | - Ray El Boustany
- Centre de Recherche des Cordeliers UMR-S 1138, Université de Paris, INSERM, Paris, France
| | - Jean-Philippe Bastard
- Biochemistry and Hormonology Department, AP-HP, Tenon Hospital, Paris, France.,Department of Biochemistry-Pharmacology-Molecular Biology-Medical Genetics, AP-HP, Henri Mondor Hospital, Créteil, France
| | - Soraya Fellahi
- Biochemistry and Hormonology Department, AP-HP, Tenon Hospital, Paris, France
| | - Beverley Balkau
- Centre for Research in Epidemiology and Population Health (CESP), INSERM, UMR-S 1018, University Paris-Sud, University Versailles Saint-Quentin, Villejuif, France
| | - Michel Marre
- Centre de Recherche des Cordeliers UMR-S 1138, Université de Paris, INSERM, Paris, France
| | - Nicolas Venteclef
- Centre de Recherche des Cordeliers UMR-S 1138, Université de Paris, INSERM, Paris, France.,UMR-S 1138, Sorbonne Université, Paris, France
| | | | - Ronan Roussel
- Centre de Recherche des Cordeliers UMR-S 1138, Université de Paris, INSERM, Paris, France.,Department of Diabetology, Endocrinology, Nutrition, AP-HP, Bichat Hospital, Paris, France
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9
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Jiao B, An C, Du H, Tran M, Wang P, Zhou D, Wang Y. STAT6 Deficiency Attenuates Myeloid Fibroblast Activation and Macrophage Polarization in Experimental Folic Acid Nephropathy. Cells 2021; 10:3057. [PMID: 34831280 PMCID: PMC8623460 DOI: 10.3390/cells10113057] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 10/25/2021] [Accepted: 11/04/2021] [Indexed: 01/02/2023] Open
Abstract
Renal fibrosis is a pathologic feature of chronic kidney disease, which can lead to end-stage kidney disease. Myeloid fibroblasts play a central role in the pathogenesis of renal fibrosis. However, the molecular mechanisms pertaining to myeloid fibroblast activation remain to be elucidated. In the present study, we examine the role of signal transducer and activator of transcription 6 (STAT6) in myeloid fibroblast activation, macrophage polarization, and renal fibrosis development in a mouse model of folic acid nephropathy. STAT6 is activated in the kidney with folic acid nephropathy. Compared with folic-acid-treated wild-type mice, STAT6 knockout mice had markedly reduced myeloid fibroblasts and myofibroblasts in the kidney with folic acid nephropathy. Furthermore, STAT6 knockout mice exhibited significantly less CD206 and PDGFR-β dual-positive fibroblast accumulation and M2 macrophage polarization in the kidney with folic acid nephropathy. Consistent with these findings, STAT6 knockout mice produced less extracellular matrix protein, exhibited less severe interstitial fibrosis, and preserved kidney function in folic acid nephropathy. Taken together, these results have shown that STAT6 plays a critical role in myeloid fibroblasts activation, M2 macrophage polarization, extracellular matrix protein production, and renal fibrosis development in folic acid nephropathy. Therefore, targeting STAT6 may provide a novel therapeutic strategy for fibrotic kidney disease.
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Affiliation(s)
- Baihai Jiao
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA; (B.J.); (C.A.); (H.D.); metr (M.T.); (D.Z.)
| | - Changlong An
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA; (B.J.); (C.A.); (H.D.); metr (M.T.); (D.Z.)
| | - Hao Du
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA; (B.J.); (C.A.); (H.D.); metr (M.T.); (D.Z.)
| | - Melanie Tran
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA; (B.J.); (C.A.); (H.D.); metr (M.T.); (D.Z.)
| | - Penghua Wang
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT 06030, USA;
| | - Dong Zhou
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA; (B.J.); (C.A.); (H.D.); metr (M.T.); (D.Z.)
| | - Yanlin Wang
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT 06030, USA; (B.J.); (C.A.); (H.D.); metr (M.T.); (D.Z.)
- Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT 06030, USA
- Institute for Systems Genomics, University of Connecticut School of Medicine, Farmington, CT 06030, USA
- Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, CT 06516, USA
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10
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Jiao B, An C, Tran M, Du H, Wang P, Zhou D, Wang Y. Pharmacological Inhibition of STAT6 Ameliorates Myeloid Fibroblast Activation and Alternative Macrophage Polarization in Renal Fibrosis. Front Immunol 2021; 12:735014. [PMID: 34512669 PMCID: PMC8426438 DOI: 10.3389/fimmu.2021.735014] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/04/2021] [Indexed: 12/24/2022] Open
Abstract
A hallmark of chronic kidney disease is renal fibrosis, which can result in progressive loss of kidney function. Currently, there is no effective therapy for renal fibrosis. Therefore, there is an urgent need to identify potential drug targets for renal fibrosis. In this study, we examined the effect of a selective STAT6 inhibitor, AS1517499, on myeloid fibroblast activation, macrophage polarization, and development of renal fibrosis in two experimental murine models. To investigate the effect of STAT6 inhibition on myeloid fibroblast activation, macrophage polarization, and kidney fibrosis, wild-type mice were subjected to unilateral ureteral obstruction or folic acid administration and treated with AS1517499. Mice treated with vehicle were used as control. At the end of experiments, kidneys were harvested for analysis of myeloid fibroblast activation, macrophage polarization, and renal fibrosis and function. Unilateral ureteral obstruction or folic acid administration induced STAT6 activation in interstitial cells of the kidney, which was significantly abolished by AS1517499 treatment. Mice treated with AS1517499 accumulated fewer myeloid fibroblasts and myofibroblasts in the kidney with ureteral obstruction or folic acid nephropathy compared with vehicle-treated mice. Moreover, AS1517499 significantly suppressed M2 macrophage polarization in the injured kidney. Furthermore, AS1517499 markedly reduced the expression levels of extracellular matrix proteins, and development of kidney fibrosis and dysfunction. These findings suggest that AS1517499 inhibits STAT6 activation, suppresses myeloid fibroblast activation, reduces M2 macrophage polarization, attenuates extracellular matrix protein production, and preserves kidney function. Therefore, targeting STAT6 with AS1517499 is a novel therapeutic approach for chronic kidney disease.
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Affiliation(s)
- Baihai Jiao
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Changlong An
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Melanie Tran
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Hao Du
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Penghua Wang
- Department of Immunology, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Dong Zhou
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, United States
| | - Yanlin Wang
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, United States
- Department of Cell Biology, University of Connecticut School of Medicine, Farmington, CT, United States
- Institute for Systems Genomics, University of Connecticut School of Medicine, Farmington, CT, United States
- Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, CT, United States
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Ortega-Loubon C, Martínez-Paz P, García-Morán E, Tamayo-Velasco Á, López-Hernández FJ, Jorge-Monjas P, Tamayo E. Genetic Susceptibility to Acute Kidney Injury. J Clin Med 2021; 10:jcm10143039. [PMID: 34300206 PMCID: PMC8307812 DOI: 10.3390/jcm10143039] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 12/14/2022] Open
Abstract
Acute kidney injury (AKI) is a widely held concern related to a substantial burden of morbidity, mortality and expenditure in the healthcare system. AKI is not a simple illness but a complex conglomeration of syndromes that often occurs as part of other syndromes in its wide clinical spectrum of the disease. Genetic factors have been suggested as potentially responsible for its susceptibility and severity. As there is no current cure nor an effective treatment other than generally accepted supportive measures and renal replacement therapy, updated knowledge of the genetic implications may serve as a strategic tactic to counteract its dire consequences. Further understanding of the genetics that predispose AKI may shed light on novel approaches for the prevention and treatment of this condition. This review attempts to address the role of key genes in the appearance and development of AKI, providing not only a comprehensive update of the intertwined process involved but also identifying specific markers that could serve as precise targets for further AKI therapies.
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Affiliation(s)
- Christian Ortega-Loubon
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Department of Cardiovascular Surgery, Hospital Clinic of Barcelona, 08036 Barcelona, Spain
| | - Pedro Martínez-Paz
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Department of Surgery, Faculty of Medicine, University of Valladolid, 47003 Valladolid, Spain
- Correspondence: (P.M.-P.); (P.J.-M.); Tel.: +34-9834200000 (P.M.-P.); +34-687978535 (P.J.-M)
| | - Emilio García-Morán
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Department of Cardiology, Clinical University Hospital of Valladolid, 47003 Valladolid, Spain
| | - Álvaro Tamayo-Velasco
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Department of Hematology and Hemotherapy, Clinical University Hospital of Valladolid, 47003 Valladolid, Spain
| | - Francisco J. López-Hernández
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Institute of Biomedical Research of Salamnca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain
- Group of Translational Research on Renal and Cardiovascular Diseases (TRECARD), Departmental Building Campus Miguel de Unamuno, 37007 Salamanca, Spain
| | - Pablo Jorge-Monjas
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Department of Anesthesiology and Critical Care, Clinical University Hospital of Valladolid, Ramón y Cajal Ave, 47003 Valladolid, Spain
- Correspondence: (P.M.-P.); (P.J.-M.); Tel.: +34-9834200000 (P.M.-P.); +34-687978535 (P.J.-M)
| | - Eduardo Tamayo
- BioCritic. Group for Biomedical Research in Critical Care Medicine, University of Valladolid, 47003 Valladolid, Spain; (C.O.-L.); (E.G.-M.); (Á.T.-V.); (F.J.L.-H.); (E.T.)
- Department of Anesthesiology and Critical Care, Clinical University Hospital of Valladolid, Ramón y Cajal Ave, 47003 Valladolid, Spain
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12
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Renu K, Pureti LP, Vellingiri B, Valsala Gopalakrishnan A. Toxic effects and molecular mechanism of doxorubicin on different organs – an update. TOXIN REV 2021. [DOI: 10.1080/15569543.2021.1912099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Kaviyarasi Renu
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, India
| | - Lakshmi Prasanna Pureti
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, India
| | - Balachandar Vellingiri
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology (VIT), Vellore, India
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13
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Jin X, Wang Y. Mechanisms of Adiponectin in Regulation of Proinflammatory Cytokine Production and Migration in Macrophages. J Inflamm Res 2021; 14:981-993. [PMID: 33790614 PMCID: PMC7997606 DOI: 10.2147/jir.s292137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/03/2021] [Indexed: 01/02/2023] Open
Abstract
Introduction Evidence indicate that adiponectin may exert pro-inflammatory effects on inflammatory cells. We have found that adiponectin knockout decreased inflammatory reaction and tubular damage in the ischemia-reperfusion kidney in APN-knockout mice. Globular adiponectin and full-length adiponectin (g-APN and f-APN) were used in this study to investigate the effects of adiponectin on proinflammatory cytokines production and migration in Raw 264.7 cells. Methods Proinflammatory cytokines production was detected by real-time RT-PCR. NF-kappaB activation was interrupted through Ad-DN-IκBα or SN-50 to confirm how g-APN induces proinflammatory cytokines production. The siRNA against AdipoR1 and AdipoR2 was investigated to uncover the signaling pathway that may involve in NF-kappaB activation and migration in Raw 264.7 cells. Results g-APN, not f-APN, was found triggering the production of inflammatory cytokine MIP-2, IL-6, TNFα, and MCP-1 in Raw 264.7 cells. NF-kappaB Inhibition by Ad-DN-IκBα expression or cell-permeable NF-κB inhibitor SN-50 could decrease NF-kappaB nuclear translocation and subsequently decrease inflammatory cytokine expression triggered by globular ANP. However, AdipoR1 and AdipoR2 were not found involved in NF-kappaB activation in this study. Full-length APN, not g-APN, was involved in the promotion of macrophage migration. The migration induced by full-length APN could be inhibited by knockdown of AdipoR1 expression with siRNA. The migration effect could also be inhibited by PI3Kγ inhibitor, AS-605240. Discussion These results suggested that full-length adiponectin increases macrophage migration through Adiponectin-AdipoR1-PI3Kgamma signaling pathway. However, NF-κB activation induced by g-APN in this study was independent of AdipoR1 or AdipoR2. The exact signaling pathway of NF-κB activation by adiponectin should be further studied to find a new anti-inflammatory target.
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Affiliation(s)
- Xiaogao Jin
- Department of Anesthesiology and Perioperative Medicine, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, 450007, People's Republic of China.,Department of Anesthesiology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi Zhuang Autonomous Region, 541000, People's Republic of China
| | - Yanlin Wang
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, USA
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14
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An C, Wen J, Hu Z, Mitch WE, Wang Y. Phosphoinositide 3-kinase γ deficiency attenuates kidney injury and fibrosis in angiotensin II-induced hypertension. Nephrol Dial Transplant 2021; 35:1491-1500. [PMID: 32500132 DOI: 10.1093/ndt/gfaa062] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 03/04/2020] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND We have shown that the CXCL16/CXCR6 axis plays a critical role in recruiting inflammatory cells and bone marrow-derived fibroblasts into the kidney leading to renal injury and fibrosis. However, the underlying signaling mechanisms are not known. METHODS In the present study, we examined the role of phosphoinositide-3 kinase γ (PI3Kγ) signaling in the recruitment of inflammatory cells and bone marrow-derived fibroblasts into the kidney and development of renal injury and fibrosis in an experimental model of hypertension induced by angiotensin II. RESULTS Blood pressure was comparable between wild-type (WT) and PI3Kγ knockout (KO) mice at baseline. Angiotensin II treatment led to an increase in blood pressure that was similar between WT and PI3Kγ KO mice. Compared with WT mice, PI3Kγ KO mice were protected from angiotensin II-induced renal dysfunction and injury and developed less proteinuria. PI3Kγ deficiency suppressed bone marrow-derived fibroblast accumulation and myofibroblast formation in the kidney and inhibited total collagen deposition and extracellular matrix protein production in the kidney in response to angiotensin II. PI3Kγ deficiency inhibited the infiltration of F4/80+ macrophages and CD3+ T cells into the kidney and reduced gene expression levels of pro-inflammatory cytokines in the kidney following angiotensin II treatment. Finally, inhibition of PI3Kγ suppressed CXCL16-induced monocyte migration in vitro. CONCLUSION These results indicate that PI3Kγ mediates the influx of macrophages, T cells and bone marrow-derived fibroblasts into the kidney resulting in kidney injury and fibrosis.
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Affiliation(s)
- Changlong An
- Division of Nephrology, Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Jia Wen
- Division of Nephrology, Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA
| | - Zhaoyong Hu
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - William E Mitch
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Yanlin Wang
- Division of Nephrology, Department of Medicine, University of Connecticut Health Center, Farmington, CT, USA.,Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA.,Institute for Systems Genomics, University of Connecticut Health Center, Farmington, CT, USA.,Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, CT, USA
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15
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Tsugawa-Shimizu Y, Fujishima Y, Kita S, Minami S, Sakaue TA, Nakamura Y, Okita T, Kawachi Y, Fukada S, Namba-Hamano T, Takabatake Y, Isaka Y, Nishizawa H, Ranscht B, Maeda N, Shimomura I. Increased vascular permeability and severe renal tubular damage after ischemia-reperfusion injury in mice lacking adiponectin or T-cadherin. Am J Physiol Endocrinol Metab 2021; 320:E179-E190. [PMID: 33284092 PMCID: PMC8260375 DOI: 10.1152/ajpendo.00393.2020] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Adiponectin (APN) is a circulating protein specifically produced by adipocytes. Native APN specifically binds to T-cadherin, a glycosylphosphatidylinositol-anchored protein, mediating the exosome-stimulating effects of APN in endothelial, muscle, and mesenchymal stem cells. It was previously reported that APN has beneficial effects on kidney diseases, but the role of T-cadherin has not been clarified yet. Here, our immunofluorescence study indicated the existence of both T-cadherin and APN protein in pericytes, subsets of tissue-resident mesenchymal stem/progenitor cells positive for platelet-derived growth factor receptor β (PDGFRβ), surrounding peritubular capillaries. In an acute renal ischemia-reperfusion (I/R) model, T-cadherin-knockout (Tcad-KO) mice, similar to APN-KO mice, exhibited the more progressive phenotype of renal tubular damage and increased vascular permeability than wild-type mice. In addition, in response to I/R-injury, the renal PDGFRβ-positive cell area increased in wild-type mice, but opposingly decreased in both Tcad-KO and APN-KO mice, suggesting severe pericyte loss. Mouse primary pericytes also expressed T-cadherin. APN promoted exosome secretion in a T-cadherin-dependent manner. Such exosome production from pericytes may play an important role in maintaining the capillary network and APN-mediated inhibition of renal tubular injury. In summary, our study suggested that APN protected the kidney in an acute renal injury model by binding to T-cadherin.NEW & NOTEWORTHY In the kidney, T-cadherin-associated adiponectin protein existed on peritubular capillary pericytes. In an acute renal ischemia-reperfusion model, deficiency of adiponectin or T-cadherin exhibited the more progressive phenotype of renal tubular damage and increased vascular permeability, accompanied by severe pericyte loss. In vitro, adiponectin promoted exosome secretion from mouse primary pericytes in a T-cadherin-dependent manner. Adiponectin plays an important role in maintaining the capillary network and amelioration of renal tubular injury by binding to T-cadherin.
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Affiliation(s)
- Yuri Tsugawa-Shimizu
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Yuya Fujishima
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Shunbun Kita
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
- Department of Adipose Management, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Satoshi Minami
- Department of Nephrology, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Taka-Aki Sakaue
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Yuto Nakamura
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Tomonori Okita
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Yusuke Kawachi
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Shiro Fukada
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Tomoko Namba-Hamano
- Department of Nephrology, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Yoshitsugu Takabatake
- Department of Nephrology, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Hitoshi Nishizawa
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Barbara Ranscht
- Development, Aging and Regeneration Program, NIH-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, California
| | - Norikazu Maeda
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
- Department of Metabolism and Atherosclerosis, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Graduate School of Medicine and Faculty of Medicine, Osaka University, Suita, Japan
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16
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Chen H, Fan Y, Jing H, Tang S, Huang Z, Liao M, Lin S, Zhong J, Zhou J. LncRNA Gm12840 mediates WISP1 to regulate ischemia-reperfusion-induced renal fibrosis by sponging miR-677-5p. Epigenomics 2020; 12:2205-2218. [PMID: 33351669 DOI: 10.2217/epi-2020-0054] [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] [Indexed: 01/25/2023] Open
Abstract
Aim: We aimed to identify that long noncoding RNAs (lncRNAs) are involved in ischemia-reperfusion (IR)-induced late fibrosis of kidney and may constitute novel therapeutic strategies for acute kidney injury-induced chronic kidney disease. Materials & methods: We performed the mouse model of IR later induced renal fibrosis and analyzed lncRNA profiles using second-generation sequencing during the pathogenesis. Results: The expression levels of 43 lncRNAs and 141 lncRNAs were respectively changed significantly 7 days and 2 weeks after IR treatment. Based on the correlation analysis of the differentially expressed genes, the interaction networks of lncRNAs, miRNAs and mRNA were structured. Conclusion: LncRNA (Gm12840) could act as a sponge for miR-677-5p to mediate fibroblast activation induced by TGF-β1 via the WISP1/PKB (Akt) signaling pathway.
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Affiliation(s)
- Hongtao Chen
- Department of Anesthesiology, Guangzhou Eighth People's Hospital, Guangzhou Medical University, 8 Huaying Road, Guangzhou, Guangdong 510060, PR China
| | - Youling Fan
- Department of Anesthesiology, Panyu Central Hospital, 8 Fuyu West Road, Guangzhou, Guangdong 511400, PR China
| | - Huan Jing
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, 183 Zhongshan West Road, Guangzhou, Guangdong 510630, PR China
| | - Simin Tang
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, 183 Zhongshan West Road, Guangzhou, Guangdong 510630, PR China
| | - Zhenxing Huang
- Department of Anesthesiology, The First People's Hospital of Foshan, 81 North Lingnan Avenue, Foshan, Guangdong 528000, PR China
| | - Meijuan Liao
- Department of Anesthesiology, The First People's Hospital of Foshan, 81 North Lingnan Avenue, Foshan, Guangdong 528000, PR China
| | - Sen Lin
- Department of Anesthesiology, The First People's Hospital of Foshan, 81 North Lingnan Avenue, Foshan, Guangdong 528000, PR China
| | - Jiying Zhong
- Department of Anesthesiology, The First People's Hospital of Foshan, 81 North Lingnan Avenue, Foshan, Guangdong 528000, PR China
| | - Jun Zhou
- Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, 183 Zhongshan West Road, Guangzhou, Guangdong 510630, PR China
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17
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Jin X, An C, Jiao B, Safirstein RL, Wang Y. AMP-activated protein kinase contributes to cisplatin-induced renal epithelial cell apoptosis and acute kidney injury. Am J Physiol Renal Physiol 2020; 319:F1073-F1080. [PMID: 33103444 DOI: 10.1152/ajprenal.00354.2020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Cisplatin, a commonly used anticancer drug, has been shown to induce acute kidney injury, which limits its clinical use in cancer treatment. Emerging evidence has suggested that AMP-activated protein kinase (AMPK), which functions as a cellular energy sensor, is activated by various cellular stresses that deplete cellular ATP. However, the potential role of AMPK in cisplatin-induced apoptosis of renal tubular epithelial cells has not been studied. In this study, we demonstrated that cisplatin activates AMPK (Thr172 phosphorylation) in cultured renal tubular epithelial cells in a time-dependent manner, which was associated with p53 phosphorylation. Compound C, a selective AMPK inhibitor, suppressed cisplatin-induced AMPK activation, p53 phosphorylation, Bax induction, and caspase 3 activation. Furthermore, silencing AMPK expression by siRNA attenuated cisplatin-induced p53 phosphorylation, Bax induction, and caspase 3 activation. In a mouse model of cisplatin-induced kidney injury, compound C inhibited p53 phosphorylation, Bax expression, caspase 3 activation, and apoptosis, protecting the kidney from injury and dysfunction. Taken together, these results suggest that the AMPK-p53-Bax signaling pathway plays a crucial role in cisplatin-induced tubular epithelial cell apoptosis.
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Affiliation(s)
- Xiaogao Jin
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Department of Anesthesiology, The Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Changlong An
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Baihai Jiao
- Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Robert L Safirstein
- Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut
| | - Yanlin Wang
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut.,Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut.,Department of Cell Biology, University of Connecticut School of Medicine, Farmington, Connecticut.,Institute for Systems Genomics, University of Connecticut School of Medicine, Farmington, Connecticut
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18
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Carballo MCS, Pinto LCS, Brito MVH. The role of adiponectin in ischemia-reperfusion syndrome: a literature review. EINSTEIN-SAO PAULO 2020; 18:eRW5160. [PMID: 32876087 PMCID: PMC7444600 DOI: 10.31744/einstein_journal/2020rw5160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 12/03/2019] [Indexed: 02/05/2023] Open
Abstract
Adiponectin, among other diverse adipokines, is produced in greater quantity and has an effect on the adipose tissue and other tissues in the body. Adiponectin plays three main roles: regulatory metabolic and sensitizing function of insulin in the liver and muscles; it acts as an anti-inflammatory cytokine and in vascular protection, besides important cardiac protection in the presence of ischemia-reperfusion syndrome. Since many situations resulting from traumatic accidents or pathologies are due to cell damage caused by ischemia-reperfusion syndrome, it is relevant to study new therapeutic alternatives that will contribute to reducing these lesions. The objective of this study is to carry out a literature review on the role of adiponectin in ischemia-reperfusion syndrome.
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Zhou J, Lyu L, Zhu L, Liang Y, Dong H, Chu H. Association of overweight with postoperative acute kidney injury among patients receiving orthotopic liver transplantation: an observational cohort study. BMC Nephrol 2020; 21:223. [PMID: 32527305 PMCID: PMC7291754 DOI: 10.1186/s12882-020-01871-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Accepted: 05/25/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Acute kidney injury (AKI) is a common postoperative complication of orthotopic liver transplantation (OLT). So far, little attention has been paid on the association between overweight and AKI after OLT, and animal models or clinical studies have drawn conflicting conclusions. The objective of our study was to determine whether overweight (BMI [Body Mass Index] ≥ 25 kg/m2) is associated with an increased risk of AKI after OLT. METHODS This retrospective cohort study included 244 patients receiving OLT in the Affiliated Hospital of Qingdao University between January 1, 2017, and August 29, 2019. Preoperative, intraoperative, and postoperative data were collected retrospectively. The primary outcome was the development of AKI as defined by Kidney Disease, Improving Global Outcome (KIDGO) staging system. Logistic regression analysis was used to determine the relationship between overweight and the occurrence of postoperative AKI. Data analysis was conducted from September to October 2019, revision in April 2020. RESULTS Among 244 patients receiving OLT (mean [standard deviation] age, 54.1 [9.6] years; 84.0% male) identified, 163 patients (66.8%) developed postoperative AKI. Overweight (BMI ≥ 25 kg/m2) was associated with a higher rate of postoperative severe AKI (stage 2/3) compared with normal weight (18.5 ≤ BMI < 25 kg/m2) (41 [47.7%] vs 39 [28.7%]; adjusted odds ratio [OR], 2.539; 95% confidence interval [CI], 1.389-4.642; P = 0.002). Furthermore, patients with obese were at even higher risk of postoperative severe AKI after controlling for confounding factors (adjusted OR: 3.705; 95% CI: 1.108-12.388; P = 0.033). CONCLUSIONS Overweight is independently associated with an increased risk of postoperative severe AKI among patients receiving OLT. The association of BMI with severe AKI after OLT is J-shaped.
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Affiliation(s)
- Jian Zhou
- Department of Anesthesiology, Qingdao University Medical College, Qingdao, China
| | - Lin Lyu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266100, Shandong Province, China
| | - Lin Zhu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266100, Shandong Province, China
| | - Yongxin Liang
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266100, Shandong Province, China
| | - He Dong
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266100, Shandong Province, China
| | - Haichen Chu
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266100, Shandong Province, China.
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20
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Abstract
BACKGROUND Adiponectin is the most abundant adipokines that plays critical roles in the maintenance of energy homeostasis as well as inflammation regulation. The half-life of adiponectin is very short and the small-molecule adiponectin receptor agonist has been synthesized recently. In the present study, the potential roles of AdipoRon, an adiponectin receptor agonist, in a mouse model of lipopolysaccharide (LPS)/D-galactosamine (D-Gal)-induced acute hepatitis was explored. METHODS BALB/c mice (n = 144, male) were divided into three sets. In set 1, 32 mice were randomized into four groups: the control group, the AdipoRon group, the LPS/D-Gal group, and the AdipoRon + LPS/D-Gal group. The mice in set 1 were sacrificed after LPS/D-Gal treatment, and the plasma samples were collected for detection of tumor necrosis factor-alpha (TNF-α). In set 2, the 32 mice were also divided into four groups similar to that of set 1. The mice were sacrificed 6 h after LPS/D-Gal injection and plasma samples and liver were collected. In set 3, 80 mice (divided into four groups, n = 20) were used for survival observation. The survival rate, plasma aminotransferases, histopathological damage were measured and compared between these four groups. RESULTS AdipoRon suppressed the elevation of plasma aminotransferases (from 2106.3 ± 781.9 to 286.8 ± 133.1 U/L for alanine aminotransferase, P < 0.01; from 566.5 ± 243.4 to 180.1 ± 153.3 U/L for aspartate aminotransferase, P < 0.01), attenuated histopathological damage and improved the survival rate (from 10% to 60%) in mice with LPS/D-Gal-induced acute hepatitis. Additionally, AdipoRon down-regulated the production of TNF-α (from 328.6 ± 121.2 to 213.4 ± 52.2 pg/mL, P < 0.01), inhibited the activation of caspase-3 (from 2.04-fold to 1.34-fold of the control), caspase-8 (from 2.03-fold to 1.31-fold of the control), and caspase-9 (from 2.14-fold to 1.43-fold of the control), and decreased the level of cleaved caspase-3 (0.28-fold to that of the LPS/D-Gal group). The number of terminal deoxynucleotidyl transferase-mediated nucleotide nick-end labeling-positive apoptotic hepatocytes in LPS/D-Gal-exposed mice also reduced. CONCLUSIONS These data indicated that LPS/D-Gal-induced acute hepatitis was effectively attenuated by the adiponectin receptor agonist AdipoRon, implying that AdipoRon might become a new reagent for treatment of acute hepatitis.
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21
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Zhu Y, Ding A, Yang D, Cui T, Yang H, Zhang H, Wang C. CYP2J2-produced epoxyeicosatrienoic acids attenuate ischemia/reperfusion-induced acute kidney injury by activating the SIRT1-FoxO3a pathway. Life Sci 2020; 246:117327. [PMID: 31954161 DOI: 10.1016/j.lfs.2020.117327] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 02/06/2023]
Abstract
Cytochrome P450 (CYP) epoxygenases can metabolize arachidonic acids to epoxyeicosatrienoic acids (EETs), which play a protective role in the renal system, but their involvement in ischemia/reperfusion (I/R)-induced acute kidney injury remains unknown. Here, using a rat model, we demonstrated that forced CYP2J2 expression attenuated I/R-induced renal dysfunction and protected histological integrity. We showed that CYP2J2 significantly decreased I/R-induced upregulation of blood urea nitrogen and serum creatinine and enhanced autophagy during I/R treatment. In addition, we determined the protective effect of CYP2J2 against I/R-caused apoptosis. We demonstrated that CYP2J2 overexpression attenuated the downregulation of SIRT1 and FoxO3a by I/R-induced injury. Moreover, exogenous 11,12-EET addition obviously promoted I/R-induced autophagic flux and suppressed I/R-induced apoptosis through SIRT1-FoxO3a signaling activation. Our data indicate that CYP2J2-produced EETs improve I/R-caused kidney injury by activating the SIRT1-FoxO3a signaling pathway, which protects from renal I/R injury.
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Affiliation(s)
- Ye Zhu
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China.
| | - Ao Ding
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | | | - Tongxia Cui
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | - Hui Yang
- Department of Rheumatology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | - Hua Zhang
- Department of Rheumatology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | - Cheng Wang
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China.
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22
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Zhou J, An C, Jin X, Hu Z, Safirstein RL, Wang Y. TAK1 deficiency attenuates cisplatin-induced acute kidney injury. Am J Physiol Renal Physiol 2019; 318:F209-F215. [PMID: 31813254 DOI: 10.1152/ajprenal.00516.2019] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Cisplatin can cause acute kidney injury (AKI), but the molecular mechanisms are not well understood. The objective of the present study was to examine the role of transforming growth factor-β-activated kinase-1 (TAK1) in the pathogenesis of cisplatin-induced AKI. Wild-type mice and proximal tubule TAK1-deficient mice were treated with vehicle or cisplatin. Compared with wild-type control mice, proximal tubule TAK1-deficient mice had less severe kidney dysfunction, tubular damage, and apoptosis after cisplatin-induced AKI. Furthermore, conditional disruption of TAK1 in proximal tubular epithelial cells reduced caspase-3 activation, proinflammatory molecule expression, and JNK phosphorylation in the kidney in cisplatin-induced AKI. Taken together, cisplatin activates TAK1-JNK signaling pathway to promote tubular epithelial cell apoptosis and inflammation in cisplatin-induced AKI. Targeting TAK1 could be a novel therapeutic strategy against cisplatin-induced AKI.
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Affiliation(s)
- Jun Zhou
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Department of Anesthesiology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, China
| | - Changlong An
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut
| | - Xiaogao Jin
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Department of Anesthesiology, the Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Zhaoyong Hu
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Robert L Safirstein
- Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut
| | - Yanlin Wang
- Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas.,Division of Nephrology, Department of Medicine, University of Connecticut School of Medicine, Farmington, Connecticut.,Renal Section, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut.,Department of Cell Biology, University of Connecticut School of Medicine, Farmington, Connecticut.,Institute for Systems Genomics, University of Connecticut School of Medicine, Farmington, Connecticut
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23
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Jiang Y, Quan J, Chen Y, Liao X, Dai Q, Lu R, Yu Y, Hu G, Li Q, Meng J, Xie Y, Peng Z, Tao L. Fluorofenidone protects against acute kidney injury. FASEB J 2019; 33:14325-14336. [DOI: 10.1096/fj.201901468rr] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- YuPeng Jiang
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Jiao Quan
- Department of Nutriology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Yang Chen
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Xiaohua Liao
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Qin Dai
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Rong Lu
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Yue Yu
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Gaoyun Hu
- Department of Pharmaceutical Chemistry, Xiangya Hospital, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Qianbin Li
- Department of Pharmaceutical Chemistry, Xiangya Hospital, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Jie Meng
- Department of Respirology, Xiangya Hospital, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Yanyun Xie
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Zhangzhe Peng
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
| | - Lijian Tao
- Department of Nephrology, School of Pharmaceutical Sciences, Central South University, Changsha, China
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24
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Effect of infliximab, a tumor necrosis factor-alpha inhibitor, on doxorubicin-induced nephrotoxicity in rats. Naunyn Schmiedebergs Arch Pharmacol 2019; 393:121-130. [DOI: 10.1007/s00210-019-01719-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 08/23/2019] [Indexed: 02/06/2023]
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25
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Biomarkers of cadmium, lead and mercury exposure in relation with early biomarkers of renal dysfunction and diabetes: Results from a pilot study among aging Canadians. Toxicol Lett 2019; 312:148-156. [PMID: 31100493 DOI: 10.1016/j.toxlet.2019.05.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/02/2019] [Accepted: 05/12/2019] [Indexed: 02/05/2023]
Abstract
Cadmium (Cd), lead (Pb) and mercury (Hg) are known nephrotoxicants that have been associated with the risk of developing type-2 diabetes (T2D). The aim of this pilot study was to explore relations between biomarkers of Cd, Pb and Hg exposure, early urinary biomarkers of renal dysfunction (kidney-injured molecule-1 (KIM-1), N-acetylglucosaminidase and retinol-binding protein (RBP)) and plasma biomarkers deemed predictive of the risk of developing T2D (adiponectin, leptin, branched-chain and aromatic amino acids), among 70 participants (age range: (46-87 yrs)) from the Canadian Longitudinal Study on Aging (CLSA) with normal glycemic control (glycated haemoglobin ≤ 6.5%) in all but four of them. Significant (p < 0.05) Spearman correlation coefficients were obtained between: plasma adiponectin and RBP (r = 0.42), urinary Cd (r = 0.32), blood Cd (r = 0.36); KIM-1 and CdU (r = 0.33) as well as HgU (r = 0.37); RBP and isoleucine (r = -0.28), leucine (r = -0.33), tyrosine (r = -0.3) and valine (r = -0.44); CdU and isoleucine and valine (r = -0.27 for both). Multiple linear regression analyses showed that some T2D-related biomarkers are confounders of associations between RBP and Hg or Cd biomarkers. Path analyses support a mediating effect of adiponectin on the relation between urinary Cd and RBP. Concluding, this pilot study originally investigated a comprehensive set of biomarkers on complex interactions between toxic metal exposure, renal function and T2D in a group of aging Canadians. Its findings warrant further investigation of longitudinal data in a greater number of participants.
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Liang H, Huang Q, Liao MJ, Xu F, Zhang T, He J, Zhang L, Liu HZ. EZH2 plays a crucial role in ischemia/reperfusion-induced acute kidney injury by regulating p38 signaling. Inflamm Res 2019; 68:325-336. [PMID: 30820607 DOI: 10.1007/s00011-019-01221-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 01/19/2019] [Accepted: 02/21/2019] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE AND DESIGN Renal ischemia-reperfusion (IR)-induced acute kidney injury (AKI) remains a major challenge in clinic. The histone methyltransferases enhancer of zest homolog-2 (EZH2) is associated with the development of renal injury. However, the molecular mechanism has not been fully elucidated. MATERIALS AKI in C57BL/6 mice was generated by renal IR. TREATMENTS The 3-deazaneplanocin A (DZNeP), a selective EZH2 inhibitor, or vehicle was administrated in mice after IR. HK-2 cells were exposed to hypoxia-reoxygenation (H/R) stress. METHODS Apoptosis was detected by TUNEL assay or flow cytometry. EZH2, caspase-3, p38, F4/80+ macrophages, and CD3+ T cells were examined by immunohistochemistry or Western blot. Tumor necrosis factor (TNF)-α, monocyte chemoattractant protein (MCP)-1, IL-6, and IL-18 were measured using RT-PCR. RESULTS Mice treated with DZNeP exhibited less severe renal dysfunction and tubular injury following IR. EZH2 inhibition decreased apoptotic cells while reducing activation of caspase-3 in kidneys under IR condition. Moreover, EZH2 inhibition impaired the recruitment of CD3+ T cells and F4/80+ cells in kidneys with IR. Administration of DZNeP suppressed the production of TNF-α, MCP-1, IL-6, and IL-18 in IR-treated kidneys. Of note, EZH2 inhibition reduced p38 phosphorylation in kidneys after IR. In H/R-treated HK-2 cells, DZNeP treatment or EZH2 knockdown reduced apoptosis. EZH2 inhibition inactivated p38 resulting in reduction of active caspase-3 and proinflammatory molecules. By contrast, EZH2 overexpression induced p38 phosphorylation, caspase-3 activation, and production of proinflammatory molecules, which was reversed by SB203580. CONCLUSIONS EZH2 plays a crucial role in IR-induced AKI via modulation of p38 signaling. Targeting EZH2/p38 signaling pathway may offer novel strategies to protect kidneys from acute kidney injury induced by ischemia-reperfusion.
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Affiliation(s)
- Hua Liang
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China.
| | - Qiong Huang
- Department of Medical Statistics, Foshan Chancheng Central Hospital, Foshan, 528000, China.
| | - Mei-Juan Liao
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China
| | - Feng Xu
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China
| | - Tao Zhang
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China
| | - Jian He
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China
| | - Lei Zhang
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China
| | - Hong-Zhen Liu
- Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, 528000, China
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Stroikova V, Fischer A, Bockstahler M, Müller AM, Katus HA, Kaya Z. Adiponectin deficiency has no effect in murine autoimmune myocarditis. Cytokine 2019; 116:139-149. [PMID: 30716658 DOI: 10.1016/j.cyto.2018.12.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 11/25/2018] [Accepted: 12/27/2018] [Indexed: 01/21/2023]
Abstract
BACKGROUND Adiponectin is a hormone that together with its receptors modulates a number of metabolic processes including gluconeogenesis and lipid catabolism. It belongs to the C1QTNF (complement C1q tumor necrosis factor-related protein) family, which has a variety of members with high amino acid sequence homology and overlapping functions. Concentration of adiponectin in blood is inversely correlated with body fat percentage and cardiac risk factors like blood pressure and CRP (C-reactive protein) level. Studies have identified the existence of a cardiac adiponectin system. However, little is known about the role of this system in the pathogenesis of autoimmune myocarditis. Thus, we have studied the involvement of adiponectin in the development of this autoimmune disorder in a mouse model of experimental autoimmune myocarditis (EAM). METHODS Adiponectin knockout (ko) and wild type (wt) mice were immunized with cardiac troponin I (cTnI) to induce an EAM. To determine the severity of myocardial damage, inflammation and fibrosis were scored after HE and Afog staining and high sensitivity troponin T (hsTnT) level was measured. To detect if changes in specific inflammatory cell numbers could be observed between the genotypes, we performed immunohistochemical staining to detect T lymphocytes, B lymphocytes and macrophages. The level of the humoral immune response was determined through the measurement of cTnI-specific serum IgG autoantibodies. Relative mRNA expression of different cytokines, C1QTNF family members and adiponectin receptors in the heart tissue was analyzed with qPCR. RESULTS Animals immunized with cTnI developed autoimmune myocarditis with a significant deterioration of cardiac parameters compared to the corresponding control group. The adiponectin ko group immunized with cTnI showed a tendency towards increased inflammation, fibrosis, heart-to-body-weight ratio, infiltration pattern of T lymphocytes, B lymphocytes and macrophages, hsTnT concentration, humoral immune response and mRNA expression of interleukin 6 in the heart tissue and decreased weight gain compared to the wt group immunized with cTnI. However, the difference to the wt group treated with cTnI was not significant. The analysis of cardiac mRNA expression of adiponectin receptors and four C1QTNF family members, most suitable for fulfilling the functions of adiponectin in adiponectin ko mice, did not show any significant differences between adiponectin ko and wt group at all. CONCLUSION Our study reveals that the absence of adiponectin did not lead to a significantly increased impairment of cardiac function and was also unlikely to be compensated by its receptors or other C1QTNF family members in the murine model of EAM. Here, other synergistic or redundant effects might play a role and must be investigated in further studies to understand the role and function of adiponectin in autoimmune myocarditis.
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Affiliation(s)
- Vera Stroikova
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
| | - Andrea Fischer
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
| | | | - Anna-Maria Müller
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
| | - Hugo A Katus
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany
| | - Ziya Kaya
- Department of Cardiology, University of Heidelberg, Heidelberg, Germany.
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28
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Cho J, Teshigawara R, Kameda M, Yamaguchi S, Tada T. Nucleus-localized adiponectin is survival gatekeeper through miR-214-mediated AIFM2 regulation. Genes Cells 2019; 24:126-138. [PMID: 30474186 DOI: 10.1111/gtc.12658] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 11/19/2018] [Accepted: 11/19/2018] [Indexed: 01/23/2023]
Abstract
Adiponectin secreted from adipocytes into plasma has anti-aging, anti-obesity and anti-inflammation effects. Here, we detected intracellular adiponectin localized in the nuclei of human and mouse pluripotent stem cells, mouse germ cells and some somatic cells. Nucleus-localized (Nu) adiponectin protein is characterized by an N-terminal truncated monomer form in a native state, compared with intact multimer forms of cytoplasm-localized (Cy) adiponectin protein. Doxycycline-induced over-expression of ADIPONECTIN caused cell death in human and mouse Nu-type pluripotent stem cells. Genome-wide gene expression analysis indicated that apoptosis by ADIPONECTIN over-expression was induced in accompany with upregulation of AIFM2 and MEG3. Upregulation of AIFM2 and MEG3 and down-regulation of miR-214-3p verified by qPCR analyses after ADIPONECTIN over-expression indicated that the MEG3/miR-214/AIFM2 pathway played a role in the apoptotic cell death of pluripotent cells. Adiponectin-induced cell death was rescued by the treatment with miR-214-3p mimic. Global data analysis shows that Nu adiponectin has a role in microRNA-mediated post-transcription regulation, cell-cell interactions and chromatin remodeling as a survival gatekeeper.
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Affiliation(s)
- Junkwon Cho
- Laboratory of Developmental Epigenome, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Rika Teshigawara
- Laboratory of Developmental Epigenome, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Masahiro Kameda
- Laboratory of Developmental Epigenome, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Shinpei Yamaguchi
- Laboratory of Stem Cell Pathology, Graduate School of Frontier Biosciences, Osaka University, Suita, Japan
| | - Takashi Tada
- Laboratory of Developmental Epigenome, Department of Regeneration Science and Engineering, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
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Yang Q, Fu C, Zhang X, Zhang Z, Zou J, Xiao J, Ye Z. Adiponectin protects against uric acid‑induced renal tubular epithelial inflammatory responses via the AdipoR1/AMPK signaling pathway. Int J Mol Med 2019; 43:1542-1552. [PMID: 30664190 DOI: 10.3892/ijmm.2019.4072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 01/16/2019] [Indexed: 11/06/2022] Open
Abstract
Adiponectin (APN) exerts anti‑inflammatory effects in various cells. Uric acid (UA) induces inflammation in proximal renal tubular epithelial cells (PTECs). It remains unknown whether APN protects against UA‑induced inflammation. In the present study, human PTECs were incubated with 100 µg/ml soluble (S) UA in the presence or absence of globular (g) APN, APN receptor 1 (AdipoR1)‑short hairpin RNA lentivirus or compound C. Reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) assays were performed to assess APN mRNA expression. Immunoblotting was used to assess the protein expression of APN, AdipoR1, NACHT, leucine rich repeat and pyrin domain‑containing protein 3 (NLRP3) and the activation of tumor necrosis factor (TNF) α and adenosine monophosphate‑activated protein kinase (AMPK). ELISA analyses were performed to assess supernatant levels of interleukin (IL)‑1β and TNFα. It was observed that SUA significantly enhanced APN mRNA and protein expression (both P<0.05) and increased NLRP3 (P<0.001) and TNFα (P<0.05) protein levels, as well as supernatant levels of IL‑1β (P<0.01) and TNFα (P<0.001) compared with untreated cells. gAPN administration significantly limited TNFα synthesis and secretion (both P<0.001), significantly decreased IL‑1β release (P<0.01), impacted NLRP3 protein expression and augmented AdipoR1 protein (P<0.01) and AMPK phosphorylation (P<0.05) levels compared with SUA‑treated cells. AdipoR1 knockdown significantly promoted the synthesis (P<0.05) and release of TNFα (P<0.001), significantly increased IL‑1β supernatant levels (P<0.01) and exhibited little influence on NLRP3 production (P>0.05) compared with the SUA‑treated cells. Secreted TNFα levels were significantly increased upon the inhibition of AMPK (P<0.05) and protein levels of IL‑1β, NLRP3 and TNFα in cell lysates were not significantly affected (P>0.05). In summary, the data demonstrated that SUA promoted APN expression in PTECs and that gAPN attenuated SUA‑induced inflammation through the AdipoR1/AMPK signaling pathway. AdipoR1 knockdown and AMPK inactivation increased SUA‑induced inflammatory damage in PTECs. These findings may help to further understand and regulate UA‑associated inflammation in proximal renal tubules.
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Affiliation(s)
- Qingmei Yang
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
| | - Chensheng Fu
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
| | - Xiaoli Zhang
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
| | - Zhenxing Zhang
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
| | - Jianan Zou
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
| | - Jing Xiao
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
| | - Zhibin Ye
- Department of Nephrology, Huadong Hospital Affiliated with Fudan University, Shanghai 200040, P.R. China
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Guo Z, Wang Z, Lu C, Yang S, Sun H, Reziw, Guo Y, Sun W, Yue H. Analysis of the differential urinary protein profile in IgA nephropathy patients of Uygur ethnicity. BMC Nephrol 2018; 19:358. [PMID: 30547763 PMCID: PMC6295011 DOI: 10.1186/s12882-018-1139-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 11/15/2018] [Indexed: 11/10/2022] Open
Abstract
Background IgA nephropathy (IgAN) is one of the most common forms of idiopathic glomerular diseases and might lead to end-stage kidney disease. Accurate and non-invasive biomarkers for early diagnosis are required for early intervention and consequent therapy for IgAN patients. Because variance in the disease incidence and predisposing genes of IgAN has been detected among different ethnicities, the ethnicity factor should be considered in IgAN biomarker discovery. The differences in the protein profiles and pathological mechanisms of IgAN in patients of Uygur ethnicity need to be clearly illustrated. Methods In this study, we used urinary proteomics to discover candidate biomarkers of IgAN in patients of Uygur ethnicity. The urinary proteins from Uygur normal control and Uygur IgAN patients were extracted and analyzed using 2D-LC-MS/MS and isobaric tags for relative and absolute quantitation (iTRAQ) analysis. Results A total of 277 proteins were found to be differentially represented in Uygur IgAN compared with the respective normal controls. The bioinformatics analysis revealed that the immune response, cell survival, and complement system were activated in Uygur IgAN. Many differentially expressed proteins were found to be related to nephropathy and kidney injuries. Four candidate biomarkers were validated by Western blot, and these results were consistent with the iTRAQ results. ICAM1, TIMP1, SERPINC1 and ADIPOQ were upregulated in Uygur IgAN. Bioinformatic analysis revealed that the increase of ICAM1 and TIMP1 might be caused by IgAN, but the increase of SERPINC1 and ADIPOQ might be caused by proteinuria. SERPINC1 and ICAM1 were identified as the candidate biomarkers with excellent area-under-the-curve (AUC) values (0.84) for distinguishing Uygur IgAN from normal controls. Conclusions Using urinary proteomic analysis, we identified several candidate biomarkers for IgAN in patients of Uygur ethnicity. These results will prove helpful for exploring the pathological mechanism of IgAN in patients of Uygur ethnicity and for developing better treatments for these patients. Electronic supplementary material The online version of this article (10.1186/s12882-018-1139-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Zhengguang Guo
- Core Facility of Instrument, Institute of Basic Medicine, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, 5 Dong Dan San Tiao, Beijing, China
| | - Zhao Wang
- Core Facility of Instrument, Institute of Basic Medicine, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, 5 Dong Dan San Tiao, Beijing, China
| | - Chen Lu
- Nephrology department, The Xinjiang Uygur Autonomous Region People's Hospital, 91 Tianchi Road, Urumqi, Xinjiang, China
| | - Shufen Yang
- Nephrology department, The Xinjiang Uygur Autonomous Region People's Hospital, 91 Tianchi Road, Urumqi, Xinjiang, China
| | - Haidan Sun
- Core Facility of Instrument, Institute of Basic Medicine, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, 5 Dong Dan San Tiao, Beijing, China
| | - Reziw
- Nephrology department, The Xinjiang Uygur Autonomous Region People's Hospital, 91 Tianchi Road, Urumqi, Xinjiang, China
| | - Yu Guo
- Graduate School, Xinjiang Medical University, 393 Xinyi Road, Urumqi, Xinjiang, China
| | - Wei Sun
- Core Facility of Instrument, Institute of Basic Medicine, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, 5 Dong Dan San Tiao, Beijing, China.
| | - Hua Yue
- Nephrology department, The Xinjiang Uygur Autonomous Region People's Hospital, 91 Tianchi Road, Urumqi, Xinjiang, China.
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Mantula PS, Outinen TK, Jaatinen P, Hämäläinen M, Huhtala H, Pörsti IH, Vaheri A, Mustonen JT, Mäkelä SM. High plasma resistin associates with severe acute kidney injury in Puumala hantavirus infection. PLoS One 2018; 13:e0208017. [PMID: 30517161 PMCID: PMC6281250 DOI: 10.1371/journal.pone.0208017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 11/09/2018] [Indexed: 11/26/2022] Open
Abstract
Background Puumala hantavirus (PUUV) infected patients typically suffer from acute kidney injury (AKI). Adipokines have inflammation modulating functions in acute diseases including AKI. We examined plasma levels of three adipokines (resistin, leptin, and adiponectin) in acute PUUV infection and their associations with disease severity. Methods This study included 79 patients hospitalized due to acute PUUV infection. Plasma resistin, leptin, adiponectin, as well as IL-6 and CRP, were measured at the acute phase, recovery phase and one year after hospitalization. Results Plasma resistin levels were significantly higher in the acute phase compared to the recovery phase and one year after (median resistin 28 pg/mL (11–107) vs. 17 pg/mL (7–36) vs. 14 pg/mL (7–31), p<0.001). Maximum resistin concentration correlated with maximum plasma creatinine levels (r = 0.63; p<0.001). The higher the amount of albuminuria in the urine dipstick test (0–1+, 2+ or 3+) at admission, the higher the median of maximum resistin (24.7 pg/mL, 25.4 pg/mL and 39.6 pg/mL, respectively, p = 0.002). High resistin was also an independent risk factor for severe AKI (creatinine ≥353.6μmol/L) (OR 1.08, 95% CI 1.02–1.14). Neither plasma leptin nor adiponectin level had any correlation with creatinine concentration or the amount of albuminuria. Conclusions Plasma resistin independently associates with the severity of AKI in acute PUUV infection. The association of resistin with the amount of albuminuria suggests that the level of plasma resistin is not only influenced by renal clearance but could have some role in the pathogenesis of AKI during PUUV infection.
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Affiliation(s)
- Paula S. Mantula
- Tampere University Hospital, Department of Internal Medicine, Tampere, Finland
- * E-mail:
| | - Tuula K. Outinen
- Tampere University Hospital, Department of Internal Medicine, Tampere, Finland
| | - Pia Jaatinen
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
- Division of Intermal Medicine, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Mari Hämäläinen
- The Immunopharmacology Group, Faculty of Medicine and Life Sciences, University of Tampere and Tampere University Hospital, Tampere, Finland
| | - Heini Huhtala
- Faculty of Social Sciences, University of Tampere, Tampere, Finland
| | - Ilkka H. Pörsti
- Tampere University Hospital, Department of Internal Medicine, Tampere, Finland
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Antti Vaheri
- Department of Virology, Medicum, University of Helsinki, Helsinki, Finland
| | - Jukka T. Mustonen
- Tampere University Hospital, Department of Internal Medicine, Tampere, Finland
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Satu M. Mäkelä
- Tampere University Hospital, Department of Internal Medicine, Tampere, Finland
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
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Chen S, Cai H. Adiponection, a novel player to save the kidneys. Am J Physiol Renal Physiol 2018; 315:F1250-F1251. [DOI: 10.1152/ajprenal.00349.2018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Shan Chen
- Renal Divison, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Cai
- Renal Divison, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
- Section of Nephrology, Atlanta Veterans Administration Medical Center, Decatur, Georgia
- Department of Physiology, Emory University School of Medicine, Atlanta, Georgia
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Zhang Q, Ge Y, Li H, Bai G, Jiao Z, Kong X, Meng W, Wang H. Effect of hydrogen-rich saline on apoptosis induced by hepatic ischemia reperfusion upon laparoscopic hepatectomy in miniature pigs. Res Vet Sci 2018; 119:285-291. [PMID: 30077949 DOI: 10.1016/j.rvsc.2018.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 06/15/2018] [Accepted: 07/21/2018] [Indexed: 02/07/2023]
Abstract
Hepatic ischemia reperfusion injury (HIRI) occurs commonly in liver surgery and liver transplantation. Hydrogen, a safe and effective antioxidant, exerts a protective effect against liver injury. In this study, we investigated the role of hydrogen-rich saline (HRS) in apoptosis in a miniature pig model of laparoscopic HIRI upon hepatectomy. Bama miniature pigs were randomly assigned to sham, I/R and HRS groups. The pigs received 10 mL/kg HRS by portal venous injection 10 min before reperfusion and at 1 d, 2 d, and 3 d after surgery. The results showed that HRS treatment significantly decreased serum levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and total bilirubin (TBIL) activity and TUNEL-positive cells. Upon HRS treatment, the expression of P53 and Bax mRNA and protein by RT-qPCR and Western blot was markedly decreased, whereas the expression of bcl-2 mRNA and protein was significantly increased. Moreover, Caspase-3 and Caspase-9 activities were significantly decreased upon treatment with HRS. In conclusion, the results indicate that HRS could alleviate liver injury and improve liver function via inhibiting apoptosis after laparoscopic HIRI and hepatectomy injury in miniature pigs.
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Affiliation(s)
- Qianzhen Zhang
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Yansong Ge
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Hui Li
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Ge Bai
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Zhihui Jiao
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Xiangdong Kong
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Weijing Meng
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China
| | - Hongbin Wang
- Department of Veterinary Surgery, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China.
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Teng J, Liu M, Su Y, Li K, Sui N, Wang S, Li L, Sun Y, Wang Y. Down-regulation of GRP78 alleviates lipopolysaccharide-induced acute kidney injury. Int Urol Nephrol 2018; 50:2099-2107. [PMID: 29915879 DOI: 10.1007/s11255-018-1911-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Accepted: 06/07/2018] [Indexed: 10/14/2022]
Abstract
PURPOSE Acute kidney injury (AKI) is accompanied with life-threatening sepsis. It is necessary to develop effective therapy agent or strategy for treating AKI. LPS is a primary pathogenic factor that induces sepsis. Glucose-regulated protein 78 (GRP78) is closely related to cell injuries. The objective of this study was to examine the role of GRP78 in LPS-induced AKI. METHODS Cell counting kit-8 (CCK-8) assay and flow cytometry (FCM) were respectively performed to assess the cell viability and apoptosis. Available commercial kits were used to detect the reactive oxygen species (ROS) contents and the activity of oxidative indicators. The expressions of the relevant factors were determined by real-time PCR (RT-PCR) and Western blot. RESULTS The results showed that the expression of GRP78 was apparently increased by LPS treatment, and that the down-regulation of GRP78 by small RNA interference improved the proliferation ability of renal cells in comparison to LPS group. The LPS-induced immune response and oxidative stress was alleviated by the depletion of GRP78. Moreover, the LPS-induced apoptosis was reduced in the GRP78 group by regulating the expression of mitochondrial apoptosis (Bcl-2, Bax) and endoplasmic reticulum (ER) stress (CHOP, caspase-12)-associated proteins. In addition, the protective role of GRP78 reduction was partly related to the balance of NF-κB/IκB. CONCLUSIONS Down-regulation of GRP78 attenuated LPS-induced AKI through inhibiting immune response/oxidative stress-associated apoptosis.
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Affiliation(s)
- Jinlong Teng
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mingjun Liu
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yuan Su
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Kun Li
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Na Sui
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shibo Wang
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Liandi Li
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yunbo Sun
- Department of Critical Care Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yongbin Wang
- Department of Emergency Medicine, The Affiliated hospital of Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China.
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Abstract
Adiponectin circulates in blood in multiple isoforms. High molecular weight (HMW) adiponectin is thought to be most biologically active and promotes glucose uptake, insulin sensitivity, and fatty acid oxidation. In obesity, adiponectin isoform formation is disrupted, leading to an inverse association between metabolic disease and HMW and total adiponectin. Adiponectin isoforms also function as acute-phase reactants influencing inflammation in acute and chronic disease. Interestingly, adiponectin and mortality have a U-shaped association. Unfortunately, data concerning adiponectin and its pathophysiologic function conflict. This is predominantly due to difficulties in adequate measurement of adiponectin isoforms and lack of a gold standard. In this review we provide a general overview of the formation and function of adiponectin and its isoforms under physiologic conditions. We highlight the ways adiponectin isoform formation is disrupted in obesity and its ensuing pathologic conditions. Furthermore, we will elaborate on the role of adiponectin isoforms as inflammatory proteins with respect to cardiac and kidney disease and discuss the association of adiponectin with mortality. Finally, we will provide a historical perspective on the measurement of adiponectin isoforms, current limitations, and future challenges.
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Affiliation(s)
| | - Annemieke C Heijboer
- VU University Medical Center, Amsterdam, The Netherlands; Academic Medical Center, Amsterdam, The Netherlands
| | - Madeleine L Drent
- VU University Medical Center, Amsterdam, The Netherlands; VU University, Amsterdam, The Netherlands
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Zhou J, Fan Y, Zhong J, Huang Z, Huang T, Lin S, Chen H. TAK1 mediates excessive autophagy via p38 and ERK in cisplatin-induced acute kidney injury. J Cell Mol Med 2018; 22:2908-2921. [PMID: 29504713 PMCID: PMC5908118 DOI: 10.1111/jcmm.13585] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 01/24/2018] [Indexed: 12/31/2022] Open
Abstract
The ability of cisplatin (cis‐diamminedichloroplatinum II) toxicity to induce acute kidney injury (AKI) has attracted people's attention and concern for a long time, but its molecular mechanisms are still widely unknown. We found that the expression of transforming growth factor‐β (TGF‐β)‐activated kinase 1 (TAK1) could be increased in kidneys of mice administrated with cisplatin. Autophagy is an evolutionarily conserved catabolic pathway and is involved in various acute and chronic injuries. Moreover, p38 MAPK (mitogen‐activated protein kinase) and ERK regulate autophagy in response to various stimuli. Therefore, our hypothesis is that cisplatin activates TAK1, which phosphorylates p38 and ERK, leading to excessive autophagy of tubular epithelial cells and thus exacerbating kidney damage. Here, BALB/c mice were intraperitoneally injected with a TAK1 inhibitor and were then administrated with sham or cisplatin at 20 mg/kg by intraperitoneal injection. Compared with mice in the vehicle cisplatin group, mice intraperitoneally injected with a TAK1 inhibitor were found to have lower serum creatinine and less tubular damage following cisplatin‐induced AKI. Furthermore, inhibition of TAK1 reduced p38 and Erk phosphorylation, decreased expression of LC3II and reversed the down‐regulation of P62 expression induced by cisplatin. The hypothesis was verified with tubular epithelial cells administrated with cisplatin in vitro. Finally, p38 inhibitor or ERK inhibitor abated autophagy activation and cell viability reduction in tubular epithelial cells treated with cisplatin plus TAK1 overexpression vector. Taken together, our results show that cisplatin activates TAK1, which phosphorylates p38 and ERK, leading to excessive autophagy of tubular epithelial cells that exacerbates kidney damage.
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Affiliation(s)
- Jun Zhou
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China
| | - Youling Fan
- Department of Anesthesiology, Panyu Central Hospital, Guangzhou, China
| | - Jiying Zhong
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China
| | - Zhenxing Huang
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China
| | - Teng Huang
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China
| | - Sen Lin
- Department of Anesthesiology, The First People's Hospital of Foshan, Foshan, China
| | - Hongtao Chen
- Department of Anesthesiology, Eighth People's Hospital of Guangzhou, Guangzhou, China
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Liang H, Liao M, Zhao W, Zheng X, Xu F, Wang H, Huang J. CXCL16/ROCK1 signaling pathway exacerbates acute kidney injury induced by ischemia-reperfusion. Biomed Pharmacother 2018; 98:347-356. [DOI: 10.1016/j.biopha.2017.12.063] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/04/2017] [Accepted: 12/14/2017] [Indexed: 01/21/2023] Open
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38
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Liang H, Zhang Z, He L, Wang Y. CXCL16 regulates cisplatin-induced acute kidney injury. Oncotarget 2017; 7:31652-62. [PMID: 27191747 PMCID: PMC5077966 DOI: 10.18632/oncotarget.9386] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 05/04/2016] [Indexed: 01/11/2023] Open
Abstract
The pathogenesis of cisplatin-induced acute kidney injury (AKI) is characterized by tubular cell apoptosis and inflammation. However, the molecular mechanisms are not fully understood. We found that CXCL16 was induced in renal tubular epithelial cells in response to cisplatin-induced AKI. Therefore, we investigated whether CXCL16 played a role in cisplatin–induced tubular cell apoptosis and inflammation. Wild-type and CXCL16 knockout mice were administrated with vehicle or cisplatin at 20 mg/kg by intraperitoneal injection. CXCL16 knockout mice had lower blood urea nitrogen and less tubular damage following cisplatin-induced AKI as compared with wild-type mice. Genetic disruption of CXCL16 reduced tubular epithelial cell apoptosis and decreased caspase-3 activation. Furthermore, CXCL16 deficiency inhibited infiltration of macrophages and T cells into the kidneys following cisplatin treatment, which was associated with reduced expression of the proinflammatory cytokines in the kidneys. Taken together, our results indicate that CXCL16 plays a crucial role in the pathogenesis of cisplatin–induced AKI through regulation of apoptosis and inflammation and maybe a novel therapeutic target for cisplatin-induced AKI.
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Affiliation(s)
- Hua Liang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America.,Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-Sen University, Foshan, China
| | - Zhengmao Zhang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America
| | - Liqun He
- Section of Nephrology, Department of Medicine, Shuguang Hospital, Shanghai, China
| | - Yanlin Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, United States of America.,Center for Translational Research on Inflammatory Diseases and Renal Section, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, United States of America
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39
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Yang Q, Fu C, Xiao J, Ye Z. Uric acid upregulates the adiponectin‑adiponectin receptor 1 pathway in renal proximal tubule epithelial cells. Mol Med Rep 2017; 17:3545-3554. [PMID: 29359786 PMCID: PMC5802152 DOI: 10.3892/mmr.2017.8315] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 10/24/2017] [Indexed: 12/24/2022] Open
Abstract
Adiponectin (APN) is a protein hormone that is primarily derived from adipocytes. It can also be secreted by renal cells. Hypoadiponectinemia has been documented in patients with hyperuricemia, however, whether soluble uric acid (SUA) regulates the expression of APN and APN receptor 1 (AdipoR1) in renal proximal tubule epithelial cells (PTECs) remains to be elucidated. The present study investigated the expression of APN and AdipoR1 in cultured PTECs that were exposed to SUA through immunofluorescence and western blot analysis. In addition, Sprague-Dawley rats with oxonic acid-induced hyperuricemia (HUA) with or without febuxostat treatment were employed as an animal model to measure 24 h urine protein, serum creatinine, urea nitrogen, uric acid and homeostasis model assessment of insulin resistance. Renal pathology was evaluated using hematoxylin and eosin and immunohistochemical staining. APN and AdipoR1 expression in the renal cortex were evaluated by western blotting. The results demonstrated that, in PTECs, the expression of APN and AdipoR1 was constant and increased upon SUA exposure. Similar observations were made within the proximal renal tubules of rats, and the oxonic acid-induced increases in APN and AdipoR1 were offset by febuxostat treatment. Furthermore, SUA-treated PTECs exhibited an increase in the expression of NLR family pyrin domain-containing (NLRP) 3, which was dose-dependent. NLRP3 expression was also significantly increased in the renal cortex of HUA rats compared with control and febuxostat-treated rats. In conclusion, SUA enhanced the expression of APN and AdipoR1 in PTECs, which was associated with an increase in NLRP3 expression. The APN-AdipoR1 pathway was demonstrated to have an important role in in vitro and in vivo models of renal proximal tubule inflammatory injury. Therefore, this pathway may be a potential therapy target in urate nephropathy.
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Affiliation(s)
- Qingmei Yang
- Department of Nephrology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Chensheng Fu
- Department of Nephrology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Jing Xiao
- Department of Nephrology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
| | - Zhibin Ye
- Department of Nephrology, Huadong Hospital Affiliated to Fudan University, Shanghai 200040, P.R. China
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40
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Zhou J, Chen H, Fan Y. Systematic analysis of the expression profile of non-coding RNAs involved in ischemia/reperfusion-induced acute kidney injury in mice using RNA sequencing. Oncotarget 2017; 8:100196-100215. [PMID: 29245971 PMCID: PMC5725013 DOI: 10.18632/oncotarget.22130] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 08/27/2017] [Indexed: 01/13/2023] Open
Abstract
Acute kidney injury (AKI) is a common and serious disease characterized by a rapid decline in renal function and has an unacceptably high mortality rate with no effective treatment beyond supportive care. AKI can be induced by many factors such as ischemia/reperfusion (IR), sepsis, and drug-induced nephrotoxicity. However, the molecular mechanisms of AKI are poorly understood. A non-coding RNA (ncRNA) is a RNA molecule that is not translated into a protein. NcRNAs play multiple roles in cellular processes, and mutations or imbalances of these molecules within the body can cause a variety of diseases. Although growing evidence has supported the key role of ncRNAs in AKI, the specific mechanism remains largely unknown. In this study, the second-generation gene sequencing was performed to investigate the expression patterns of ncRNAs, including microRNA (miRNA), long non-coding RNAs, and circular RNAs, in the kidneys of mice subjected to IR-induced AKI. This information will contribute to future research of the mechanism of ncRNAs in the pathogenesis of AKI and facilitate the identification of novel therapeutic targets of ncRNAs.
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Affiliation(s)
- Jun Zhou
- Department of Anesthesiology, The First People’s Hospital of Foshan, Foshan, Guangdong Province 528000, China
| | - Hongtao Chen
- Department of Anesthesiology, Eighth People’s Hospital of Guangzhou, Guangzhou, Guangdong Province 510060, China
| | - Youling Fan
- Department of Anesthesiology, Panyu Central Hospital, Guangzhou, Guangdong Province 511400, China
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41
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Zhou J, Jia L, Hu Z, Wang Y. Pharmacological Inhibition of PTEN Aggravates Acute Kidney Injury. Sci Rep 2017; 7:9503. [PMID: 28842716 PMCID: PMC5572703 DOI: 10.1038/s41598-017-10336-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 08/08/2017] [Indexed: 12/13/2022] Open
Abstract
Renal ischemia/reperfusion is a major cause of acute kidney injury. However, the pathogenic mechanisms underlying renal ischemia/reperfusion injury (IRI) are not fully defined. Here, we investigated the role of PTEN, a dual protein/lipid phosphatase, in the development of ischemic AKI in mice. Pharmacological inhibition of PTEN with bpV(HOpic) exacerbated renal dysfunction and promoted tubular damage in mice with IRI compared with vehicle-treated mice with IRI. PTEN inhibition enhanced tubular cell apoptosis in kidneys with IRI, which was associated with excessive caspase-3 activation. Furthermore, PTEN inhibition expanded the infiltration of neutrophils and macrophages into kidneys with IRI, which was accompanied by increased expression of the proinflammatory molecules. These results have demonstrated that PTEN plays a crucial role in the pathogenesis of ischemic acute kidney injury through regulating tubular cell apoptosis and inflammation suggesting PTEN could be a potential therapeutic target for acute kidney injury.
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Affiliation(s)
- Jun Zhou
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.,Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-Sen University, Foshan, China
| | - Li Jia
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Zhaoyong Hu
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Yanlin Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA. .,Center for Translational Research on Inflammatory Diseases (CTRID) and Renal Section, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, USA.
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42
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Liang H, Zhang Z, Yan J, Wang Y, Hu Z, Mitch WE, Wang Y. The IL-4 receptor α has a critical role in bone marrow-derived fibroblast activation and renal fibrosis. Kidney Int 2017; 92:1433-1443. [PMID: 28739140 DOI: 10.1016/j.kint.2017.04.021] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 04/12/2017] [Accepted: 04/18/2017] [Indexed: 12/15/2022]
Abstract
Renal fibrosis is a common pathway leading to the progression of chronic kidney disease, and bone marrow-derived fibroblasts contribute significantly to the development of renal fibrosis. However, the signaling mechanisms underlying the activation of these fibroblasts are not completely understood. Here, we examined the role of IL-4 receptor α (IL-4Rα) in the activation of myeloid fibroblasts in two experimental models of renal fibrosis. Compared with wild-type mice, IL-4Rα knockout mice accumulated fewer bone marrow-derived fibroblasts and myofibroblasts in their kidneys. IL-4Rα deficiency suppressed the expression of α-smooth muscle actin, extracellular matrix proteins and the development of renal fibrosis. Furthermore, IL-4Rα deficiency inhibited the activation of signal transducer and activator of transcription 6 (STAT6) in the kidney. Moreover, wild-type mice engrafted with bone marrow cells from IL-4Rα knockout mice exhibited fewer myeloid fibroblasts in the kidney and displayed less severe renal fibrosis following ureteral obstructive injury compared with wild-type mice engrafted with wild-type bone marrow cells. In vitro, IL-4 activated STAT6 and stimulated expression of α-smooth muscle actin and fibronectin in mouse bone marrow monocytes. This was abolished in the absence of IL-4Rα. Thus, IL-4Rα plays an important role in bone marrow-derived fibroblast activation, resulting in extracellular matrix protein production and fibrosis development. Hence, the IL-4Rα/STAT6 signaling pathway may serve as a novel therapeutic target for chronic kidney disease.
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Affiliation(s)
- Hua Liang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA; Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-Sen University, Foshan, China
| | - Zhengmao Zhang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Jingyin Yan
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Yuguo Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Zhaoyong Hu
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - William E Mitch
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Yanlin Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA; Center for Translational Research on Inflammatory Diseases and Renal Section, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas, USA.
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43
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AMP-activated protein kinase/myocardin-related transcription factor-A signaling regulates fibroblast activation and renal fibrosis. Kidney Int 2017; 93:81-94. [PMID: 28739141 DOI: 10.1016/j.kint.2017.04.033] [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: 10/04/2016] [Revised: 04/22/2017] [Accepted: 04/28/2017] [Indexed: 01/19/2023]
Abstract
Chronic kidney disease is a major cause of death, and renal fibrosis is a common pathway leading to the progression of this disease. Although activated fibroblasts are responsible for the production of the extracellular matrix and the development of renal fibrosis, the molecular mechanisms underlying fibroblast activation are not fully defined. Here we examined the functional role of AMP-activated protein kinase (AMPK) in the activation of fibroblasts and the development of renal fibrosis. AMPKα1 was induced in the kidney during the development of renal fibrosis. Mice with global or fibroblast-specific knockout of AMPKα1 exhibited fewer myofibroblasts, developed less fibrosis, and produced less extracellular matrix protein in the kidneys following unilateral ureteral obstruction or ischemia-reperfusion injury. Mechanistically, AMPKα1 directly phosphorylated cofilin leading to cytoskeleton remodeling and myocardin-related transcription factor-A nuclear translocation resulting in fibroblast activation and extracellular matrix protein production. Thus, AMPK may be a critical regulator of fibroblast activation through regulation of cytoskeleton dynamics and myocardin-related transcription factor-A nuclear translocation. Hence, AMPK signaling may represent a novel therapeutic target for fibrotic kidney disease.
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44
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Danturti S, Keslar KS, Steinhoff LR, Fan R, Dvorina N, Valujskikh A, Fairchild RL, Baldwin WM. CD4+ T lymphocytes produce adiponectin in response to transplants. JCI Insight 2017; 2:89641. [PMID: 28614792 PMCID: PMC5470881 DOI: 10.1172/jci.insight.89641] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 05/10/2017] [Indexed: 11/17/2022] Open
Abstract
Adiponectin is a pleiotropic cytokine with diverse immunomodulatory effects on macrophages and lymphocytes. In the current paradigm, lymphocytes and macrophages respond to adiponectin that is produced by adipocytes and other parenchymal cells. Using a model of chronic arterial inflammation in cardiac transplants, we found that T cells derived from the recipient migrate to the heart and produce adiponectin locally. The evidence that T cells produce significant amounts of adiponectin is based on 3 experimental approaches. First, CD4+ T cells isolated from the blood and spleen after cardiac transplantation express mRNA for adiponectin. Second, reconstitution of T cell-deficient recipients with transgenic CD4+ T cells that express receptors for donor antigens results in arterial infiltrates containing T cells and increased mRNA expression for adiponectin in cardiac transplants. Third, CD4+ T cells isolated from the allograft secrete adiponectin in vitro. Taken together, these data indicate that adiponectin-competent cells originating in the recipient migrate into the transplant. Establishing T cells as a source of adiponectin provides a new dimension, to our knowledge, to the modulatory effects of adiponectin on immune responses.
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Affiliation(s)
- Sreedevi Danturti
- Department of Immunology, Cleveland Clinic, Cleveland, Ohio, USA.,Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, Ohio, USA
| | - Karen S Keslar
- Department of Immunology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Leah R Steinhoff
- Department of Immunology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ran Fan
- Department of Immunology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Nina Dvorina
- Department of Immunology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Anna Valujskikh
- Department of Immunology, Cleveland Clinic, Cleveland, Ohio, USA
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45
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Wu H, Zhou J, Ou W, Li Y, Liu M, Yang C. TAK1 as the mediator in the protective effect of propofol on renal interstitial fibrosis induced by ischemia/reperfusion injury. Eur J Pharmacol 2017; 811:134-140. [PMID: 28603043 DOI: 10.1016/j.ejphar.2017.06.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/26/2017] [Accepted: 06/07/2017] [Indexed: 12/15/2022]
Abstract
Ischemia-reperfusion injury (IRI), which is a major cause of acute and chronic renal dysfunction, induces both apoptosis and fibrotic processes. The mitogen-activated protein kinase kinase kinase transforming growth factor-β-activated kinase 1 (TAK1) was implicated in the processes of inflammation and fibrosis. The protective effect of propofol on renal functionality after acute kidney injury (AKI) in mice has been identified, whereas the mechanisms underlying fibrosis induced by kidney injury remain obscure. Herein, we investigated whether the protective effect of propofol on renal interstitial fibrosis induced by ischemia/reperfusion injury was modulated by TAK1 in renal ischemia /reperfusion (I/R) mouse models. The results of immunohistochemistry and western blotting revealed that TAK1 was significantly upregulated in IR group versus the control group, which was reversed by propofol administration. In addition, fibronectin (FN), α-smooth muscle actin (α-SMA) and type I collagen (COL1) were significantly downregulated and Tunnel staining revealed the number of tubular apoptotic cells was markedly reduced in IRP group versus IR group. Collectively, our results validated that propofol could ameliorate the IRI-induced renal interstitial fibrosis in mice by downregulation of TAK1 and inhibition of apoptosis at the early stage.
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Affiliation(s)
- Huiping Wu
- The First People's Hospital of Foshan, Foshan, Guangdong 528000, China.
| | - Jun Zhou
- The First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Weiming Ou
- The First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Yun Li
- The First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Meifang Liu
- The First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Chengxiang Yang
- The First People's Hospital of Foshan, Foshan, Guangdong 528000, China
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Rutkowski JM, Pastor J, Sun K, Park SK, Bobulescu IA, Chen CT, Moe OW, Scherer PE. Adiponectin alters renal calcium and phosphate excretion through regulation of klotho expression. Kidney Int 2017; 91:324-337. [PMID: 27914707 PMCID: PMC5237401 DOI: 10.1016/j.kint.2016.09.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 08/16/2016] [Accepted: 09/08/2016] [Indexed: 12/29/2022]
Abstract
The kidney controls systemic calcium and phosphate levels and disturbances of its control mechanisms can lead to a variety of diseases. The insulin-sensitizing adipokine adiponectin is renoprotective and accelerates functional recovery following renal injury. However, unlike other adipokines, adiponectin is reduced in obesity. High adiponectin levels are also correlated with bone loss, suggestive of an additional action in mineral metabolism. Using knockout, wild-type, and adiponectin-overexpressing transgenic mice, we sought to identify the mechanistic basis for adiponectin's ability to regulate calcium and phosphate balance at the level of the kidney. Adiponectin knockout mice exhibited lower serum calcium, lower urinary calcium excretion, and markedly lower serum fibroblast growth factor 23 (FGF23) levels, although circulating klotho concentrations were significantly higher than in wild-type littermates. The transgenic mice exhibited lower bone mass and strength, particularly compared to adiponectin knockout mice. The transgenic mice were hyper-responsive to a 2% phosphate-enriched diet, exhibiting 2-fold higher serum FGF23 and concomitantly higher fractional phosphate excretion. These mice also excreted more calcium with calcium-enriched diet and had less renal klotho protein expression. In contrast, the knockout mice exhibited a smaller increase in FGF23 and maintained elevated klotho levels on both mineral challenges. Kidney-specific adiponectin expression in doxycycline-inducible adiponectin mice and adiponectin addition in vitro confirmed adiponectin's ability to reduce tubular epithelial cell klotho secretion. Thus, adiponectin alters calcium and phosphate balance and renal mineral excretion, in part, through klotho. This work highlights the profound effects of adipose tissue on renal function and has identified a new mechanism by which adiponectin may regulate bone mass.
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Affiliation(s)
- Joseph M Rutkowski
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Johanne Pastor
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Kai Sun
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Sun K Park
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - I Alexandru Bobulescu
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Christopher T Chen
- The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Orson W Moe
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Physiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
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Ali SI, Alhusseini NF, Atteia HH, Idris RAES, Hasan RA. Renoprotective effect of a combination of garlic and telmisartan against ischemia/reperfusion-induced kidney injury in obese rats. Free Radic Res 2016; 50:966-86. [PMID: 27405440 DOI: 10.1080/10715762.2016.1211644] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Obesity enhances the frequency and severity of acute kidney injury (AKI). Telmisartan pre-treatment was used experimentally in the amelioration of ischemia/reperfusion (IR)-induced AKI. However, there is a lack of evidence regarding its beneficial effects on AKI in obese animals. The present study, therefore, aimed to explore the protective effects of garlic and/or telmisartan against renal damage induced by unilateral IR in obese rats. Meloxicam was used as a standard anti-inflammatory agent. Prophylactic oral administration of meloxicam (3 mg kg(-1)), garlic (500 mg kg(-1)) and/or telmisartan (5 and 10 mg kg(-1)) for 4 wk protected against renal function deterioration induced by IR in obese rats. Both doses of telmisartan significantly reduced serum total cholesterol and triacyglycerol levels as well as peri-renal adipocytes size and renal fibrosis. Renal nuclear factor-kappa B immunoreactivity, tumor necrosis factor-alpha content as well as interleukin-10, adiponectin receptor 1 and macrophages (M1, M2) polarization markers (CD11c, CD206) mRNA expressions were down-regulated in ischemic kidney tissues and white adipose tissues around them by all treatments. Moreover, garlic, telmisartan and their combinations significantly suppressed oxidative stress in renal ischemic tissues. Histological picture was also improved by these treatments. Interestingly, the combinations provided a greater protection than their monotherapy in a dose-dependent manner. We suppose that this combination may be a promising prophylactic regimen for managing AKI in case of obesity. Thus, future experimental and clinical large-scale studies are necessary.
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Affiliation(s)
- Sousou Ibrahim Ali
- a Department of Biochemistry, Faculty of Pharmacy , Zagazig University , Zagazig , Sharkia Governorate , Egypt
| | | | - Hebatallah Husseini Atteia
- a Department of Biochemistry, Faculty of Pharmacy , Zagazig University , Zagazig , Sharkia Governorate , Egypt
| | - Reham Abd El-Satar Idris
- a Department of Biochemistry, Faculty of Pharmacy , Zagazig University , Zagazig , Sharkia Governorate , Egypt
| | - Rehab Abdallah Hasan
- c Department of Histology, Faculty of Medicine for Girls , Al-Azhar University , Cairo , Egypt
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Ma Z, Jin X, He L, Wang Y. CXCL16 regulates renal injury and fibrosis in experimental renal artery stenosis. Am J Physiol Heart Circ Physiol 2016; 311:H815-21. [PMID: 27496882 PMCID: PMC5142186 DOI: 10.1152/ajpheart.00948.2015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 07/27/2016] [Indexed: 12/27/2022]
Abstract
Recent studies have shown that inflammation plays a critical role in the initiation and progression of hypertensive kidney disease, including renal artery stenosis. However, the signaling mechanisms underlying the induction of inflammation are poorly understood. We found that CXCL16 was induced in the kidney in a murine model of renal artery stenosis. To determine whether CXCL16 is involved in renal injury and fibrosis, wild-type and CXCL16 knockout mice were subjected to renal artery stenosis induced by placing a cuff on the left renal artery. Wild-type and CXCL16 knockout mice had comparable blood pressure at baseline. Renal artery stenosis caused an increase in blood pressure that was similar between wild-type and CXCL16 knockout mice. CXCL16 knockout mice were protected from RAS-induced renal injury and fibrosis. CXCL16 deficiency suppressed bone marrow-derived fibroblast accumulation and myofibroblast formation in the stenotic kidneys, which was associated with less expression of extracellular matrix proteins. Furthermore, CXCL16 deficiency inhibited infiltration of F4/80(+) macrophages and CD3(+) T cells in the stenotic kidneys compared with those of wild-type mice. Taken together, our results indicate that CXCL16 plays a pivotal role in the pathogenesis of renal artery stenosis-induced renal injury and fibrosis through regulation of bone marrow-derived fibroblast accumulation and macrophage and T-cell infiltration.
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Affiliation(s)
- Zhiheng Ma
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas; Section of Nephrology, Department of Medicine, Shuguang Hospital, Shanghai, China; and
| | - Xiaogao Jin
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Liqun He
- Section of Nephrology, Department of Medicine, Shuguang Hospital, Shanghai, China; and
| | - Yanlin Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas; Center for Translational Research on Inflammatory Diseases and Renal Section, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
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49
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Habitual physical activity is associated with the maintenance of neutrophil migratory dynamics in healthy older adults. Brain Behav Immun 2016; 56:12-20. [PMID: 26928196 PMCID: PMC4929133 DOI: 10.1016/j.bbi.2016.02.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 02/14/2016] [Accepted: 02/25/2016] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Dysfunctional neutrophils with advanced age are a hallmark of immunosenescence. Reduced migration and bactericidal activity increase the risk of infection. It remains unclear why neutrophil dysfunction occurs with age. Physical activity and structured exercise have been suggested to improve immune function in the elderly. The aim of this study was to assess a comprehensive range of neutrophil functions and determine their association with habitual physical activity. METHOD Physical activity levels were determined in 211 elderly (67±5years) individuals by 7-days of accelerometry wear. Twenty of the most physically active men and women were matched for age and gender to twenty of the least physically active individuals. Groups were compared for neutrophil migration, phagocytosis, oxidative burst, cell surface receptor expression, metabolic health parameters and systemic inflammation. Groups were also compared against ten young participants (23±4years). RESULTS The most active group completed over twice as many steps/day as the least active group (p<0.001), had lower BMI's (p=0.007) and body fat percentages (p=0.029). Neutrophils migrated towards IL-8 better in the most active group compared to the least active (p<0.05) and was comparable to that of the young (p>0.05). These differences remained after adjusting for BMI, body fat and plasma metabolic markers which were different between groups. Correlations revealed that steps/day, higher adiponectin and lower insulin were positively associated with migratory ability (p<0.05). There was no difference in expression of the chemokine receptors CXCR1 or CXCR2 (p>0.05 for both). CD11b was higher in the most active group compared to the least active (p=0.048). No differences between activity groups or young controls were observed for neutrophil phagocytosis or oxidative burst in response to Escherichia coli (p>0.05). The young group had lower concentrations of IL-6, IL-8, MCP-1, CRP, IL-10 and IL-13 (p<0.05 for all) with no differences between the two older groups. CONCLUSION These data suggest that impaired neutrophil migration, but not bactericidal function, in older adults may be, in part, the result of reduced physical activity. A 2-fold difference in physical activity is associated with better preserved neutrophil migratory dynamics in healthy older people. As a consequence increasing habitual physical activity may be beneficial for neutrophil mediated immunity.
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50
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Liang H, Ma Z, Peng H, He L, Hu Z, Wang Y. CXCL16 Deficiency Attenuates Renal Injury and Fibrosis in Salt-Sensitive Hypertension. Sci Rep 2016; 6:28715. [PMID: 27353044 PMCID: PMC4926114 DOI: 10.1038/srep28715] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 06/08/2016] [Indexed: 12/20/2022] Open
Abstract
Inflammation plays an important role in the pathogenesis of hypertensive kidney disease. However, the molecular mechanisms underlying the induction of inflammation are not completely understood. We have found that CXCL16 is induced in the kidney in deoxycorticosterone acetate (DOCA)-salt hypertension. Here we examined whether CXCL16 is involved in DOCA-salt-induced renal inflammation and fibrosis. Wild-type and CXCL16 knockout mice were subjected to uninephrectomy and DOCA-salt treatment for 3 weeks. There was no difference in blood pressure at baseline between wild-type and CXCL16 knockout mice. DOCA-salt treatment resulted in significant elevation in blood pressure that was comparable between wild-type and CXCL16 knockout mice. CXCL16 knockout mice exhibited less severe renal dysfunction, proteinuria, and fibrosis after DOCA-salt treatment compared with wild-type mice. CXCL16 deficiency attenuated extracellular matrix protein production and suppressed bone marrow–derived fibroblast accumulation and myofibroblast formation in the kidneys following DOCA-salt treatment. Furthermore, CXCL16 deficiency reduced macrophage and T cell infiltration into the kidneys in response to DOCA-salt hypertension. Taken together, our results indicate that CXCL16 plays a key role in the pathogenesis of renal injury and fibrosis in salt-sensitive hypertension through regulation of bone marrow–derived fibroblast accumulation and macrophage and T cell infiltration.
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Affiliation(s)
- Hua Liang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.,Department of Anesthesiology, Affiliated Foshan Hospital of Sun Yat-sen University, Foshan, China
| | - Zhiheng Ma
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.,Section of Nephrology, Department of Medicine, Shuguang Hospital, Shanghai, China
| | - Hui Peng
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.,Section of Nephrology, Department of Internal Medicine, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Liqun He
- Section of Nephrology, Department of Medicine, Shuguang Hospital, Shanghai, China
| | - Zhaoyong Hu
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Yanlin Wang
- Selzman Institute for Kidney Health and Section of Nephrology, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA.,Center for Translational Research on Inflammatory Diseases (CTRID) and Renal Section, Michael E. DeBakey VA Medical Center, Houston, Texas, USA
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