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Rao J, Wang T, Wang K, Qiu F. Integrative analysis of metabolomics and proteomics reveals mechanism of berberrubine-induced nephrotoxicity. Toxicol Appl Pharmacol 2024; 488:116992. [PMID: 38843998 DOI: 10.1016/j.taap.2024.116992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 06/11/2024]
Abstract
Berberrubine (BRB), a main metabolite of berberine, has stronger hypoglycemic and lipid-lowering activity than its parent form. We previously found that BRB could cause obvious nephrotoxicity, but the molecular mechanism involved remains unknown. In this study, we systematically integrated metabolomics and quantitative proteomics to reveal the potential mechanism of nephrotoxicity caused by BRB. Metabolomic analysis revealed that 103 significant- differentially metabolites were changed. Among the mentioned compounds, significantly upregulated metabolites were observed for phosphorylcholine, sn-glycerol-3-phosphoethanolamine, and phosphatidylcholine. The top three enriched KEGG pathways were the mTOR signaling pathway, central carbon metabolism in cancer, and choline metabolism in cancer. ERK1/2 plays key roles in all three metabolic pathways. To further confirm the main signaling pathways involved, a proteomic analysis was conducted to screen for key proteins (such as Mapk1, Mapk14, and Caspase), indicating the potential involvement of cellular growth and apoptosis. Moreover, combined metabolomics and proteomics analyses revealed the participation of ERK1/2 in multiple metabolic pathways. These findings indicated that ERK1/2 regulated the significant- differentially abundant metabolites determined via metabolomics analysis. Notably, through a cellular thermal shift assay (CETSA) and molecular docking, ERK1/2 were revealed to be the direct binding target involved in BRB-induced nephrotoxicity. To summarize, this study sheds light on the understanding of severe nephrotoxicity caused by BRB and provides scientific basis for its safe use and rational development.
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Affiliation(s)
- Jinqiu Rao
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China
| | - Tianwang Wang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China
| | - Kai Wang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China.
| | - Feng Qiu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China; State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, PR China.
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Tsujimoto H, Hoshina A, Mae SI, Araoka T, Changting W, Ijiri Y, Nakajima-Koyama M, Sakurai S, Okita K, Mizuta K, Niwa A, Saito MK, Saitou M, Yamamoto T, Graneli C, Woollard KJ, Osafune K. Selective induction of human renal interstitial progenitor-like cell lineages from iPSCs reveals development of mesangial and EPO-producing cells. Cell Rep 2024; 43:113602. [PMID: 38237600 DOI: 10.1016/j.celrep.2023.113602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/13/2023] [Accepted: 12/05/2023] [Indexed: 03/02/2024] Open
Abstract
Recent regenerative studies using human pluripotent stem cells (hPSCs) have developed multiple kidney-lineage cells and organoids. However, to further form functional segments of the kidney, interactions of epithelial and interstitial cells are required. Here we describe a selective differentiation of renal interstitial progenitor-like cells (IPLCs) from human induced pluripotent stem cells (hiPSCs) by modifying our previous induction method for nephron progenitor cells (NPCs) and analyzing mouse embryonic interstitial progenitor cell (IPC) development. Our IPLCs combined with hiPSC-derived NPCs and nephric duct cells form nephrogenic niche- and mesangium-like structures in vitro. Furthermore, we successfully induce hiPSC-derived IPLCs to differentiate into mesangial and erythropoietin-producing cell lineages in vitro by screening differentiation-inducing factors and confirm that p38 MAPK, hypoxia, and VEGF signaling pathways are involved in the differentiation of mesangial-lineage cells. These findings indicate that our IPC-lineage induction method contributes to kidney regeneration and developmental research.
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Affiliation(s)
- Hiraku Tsujimoto
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan; Rege Nephro Co., Ltd., Med-Pharm Collaboration Building, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Azusa Hoshina
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Shin-Ichi Mae
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Toshikazu Araoka
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Wang Changting
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yoshihiro Ijiri
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - May Nakajima-Koyama
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Satoko Sakurai
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Kazusa Okita
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Ken Mizuta
- Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Akira Niwa
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Megumu K Saito
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Mitinori Saitou
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan; Department of Anatomy and Cell Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan; Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto 606-8501, Japan
| | - Takuya Yamamoto
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan; Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto 606-8501, Japan; Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto 606-8507, Japan
| | - Cecilia Graneli
- BioPharmaceuticals R&D Cell Therapy, Research and Early Development, Cardiovascular, Renal and Metabolic (CVRM), BioPharmaceuticals R&D, AstraZeneca, 431 83 Gothenburg, Sweden
| | - Kevin J Woollard
- Bioscience Renal, Research and Early Development, Cardiovascular, Renal and Metabolic, BioPharmaceuticals R&D, AstraZeneca, Cambridge CB2 0AA, UK
| | - Kenji Osafune
- Center for iPS Cell Research and Application (CiRA), Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan.
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Gao Y, Su X, Xue T, Zhang N. The beneficial effects of astragaloside IV on ameliorating diabetic kidney disease. Biomed Pharmacother 2023; 163:114598. [PMID: 37150034 DOI: 10.1016/j.biopha.2023.114598] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 02/22/2023] [Accepted: 03/23/2023] [Indexed: 05/09/2023] Open
Abstract
Diabetic kidney disease (DKD) has become the major cause of chronic kidney disease or end-stage renal disease. There is still a need for innovative treatment strategies for preventing, arresting, treating, and reversing DKD, and a plethora of scientific evidence has revealed that Chinese herbal monomers can attenuate DKD in multiple ways. Astragaloside IV (AS-IV) is one of the active ingredients of Astragalus membranaceus and was selected as a chemical marker in the Chinese Pharmacopeia for quality control purposes. An increasing amount of studies indicate that AS-IV is a promising novel drug for the treatment of DKD. AS-IV has been shown to improve DKD by combating oxidative stress, attenuating endoplasmic reticulum stress, regulating calcium homeostasis, alleviating inflammation, improving vascular function, improving epithelial to mesenchymal transition and so on. This review briefly summarizes the pathogenesis of DKD, systematically reviews the mechanisms by which AS-IV improves DKD, and aims to facilitate related pharmacological research and development to promote the utilization of Chinese herbal monomers in DKD.
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Affiliation(s)
- Yiwei Gao
- Department of Nephrology and Endocrinology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China
| | - Xin Su
- Guang'anmen Hospital of China Academy of Chinese Medical Sciences, Beijing 100053, China
| | - Taiqi Xue
- Department of Nephrology and Endocrinology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China
| | - Ning Zhang
- Department of Nephrology and Endocrinology, Wangjing Hospital of China Academy of Chinese Medical Sciences, Beijing 100102, China.
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Zhou X, Xu C, Dong J, Liao L. Role of renal tubular programed cell death in diabetic kidney disease. Diabetes Metab Res Rev 2023; 39:e3596. [PMID: 36401596 PMCID: PMC10078574 DOI: 10.1002/dmrr.3596] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/22/2022] [Accepted: 10/10/2022] [Indexed: 11/21/2022]
Abstract
The pathogenic mechanism of diabetic kidney disease (DKD) is involved in various functions; however, its inadequate characterisation limits the availability of effective treatments. Tubular damage is closely correlated with renal function and is thought to be the main contributor to the injury observed in early DKD. Programed cell death (PCD) occurs during the biological development of the living body. Accumulating evidence has clarified the fundamental role of abnormalities in tubular PCD during DKD pathogenesis. Among PCD types, classical apoptosis, autophagic cell death, and pyroptosis are the most studied and will be the focus of this review. Our review aims to elucidate the current knowledge of the mechanism of DKD and the potential therapeutic potential of drugs targeting tubular PCD pathways in DKD.
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Affiliation(s)
- Xiaojun Zhou
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Institute of Nephrology, Jinan, China
- Department of Endocrinology and Metabology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Chunmei Xu
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
- Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Shandong Provincial Hospital, Jinan, China
- Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan, China
| | - Jianjun Dong
- Division of Endocrinology, Department of Internal Medicine, Qilu Hospital of Shandong University, Jinan, China
| | - Lin Liao
- Department of Endocrinology and Metabology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Shandong Institute of Nephrology, Jinan, China
- Department of Endocrinology and Metabology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
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5
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Ahmedy OA, El-Tanbouly DM, Al-Mokaddem AK, El-Said YA. Insights into the role of P2X7R/DUSP6/ERK1/2 and SIRT2/MDM2 signaling in the nephroprotective effect of berberine against cisplatin-induced renal fibrosis in rats. Life Sci 2022; 309:121040. [DOI: 10.1016/j.lfs.2022.121040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/26/2022] [Accepted: 10/01/2022] [Indexed: 11/16/2022]
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Wang J, Wu B, Zhu Y, Jin G, Fan X. Ganoderic Acid A Inhibits High Glucose-Induced Oxidative Stress and Extracellular Matrix Accumulation in Rat Glomerular Mesangial Cells. DISEASE MARKERS 2022; 2022:5249910. [PMID: 36277981 PMCID: PMC9584714 DOI: 10.1155/2022/5249910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022]
Abstract
Objective We aimed to investigate the role of ganoderic acid A (GAA) in glomerular mesangial cells (GMCs) under high glucose (HG). Methods GMCs were pretreated with GAA and then cultured under HG condition for 24 h. Cell proliferation was measured by CCK-8 assay. The production of intracellular ROS was determined using DCFH-DA. The activities of SOD and CAT were measured using ELISA kits. The expressions of NOX2, NOX4, fibronectin (FN), collagen IV (col IV), p38, and p-p38 were detected by western blot. Results GAA suppressed GMC proliferation in response to HG stimulation. GAA significantly attenuated HG-caused increase in ROS production and decreases in SOD and CAT activities in GMCs. In addition, the increased expressions of NOX2 and NOX4 and NOX activity in HG-induced GMCs were significantly decreased by GAA. Furthermore, GAA greatly inhibited the levels of FN and col IV in HG-stimulated GMCs. Mechanistic investigations showed that HG caused activation of p38 MAPK pathway, whereas the induction was mitigated by GAA. Notably, the specific agonist of p38 MAPK pathway (P79350) reversed the effects of GAA on GMCs. Conclusion GAA protected GMCs from HG-induced oxidative stress and ECM production, which was mediated by the inhibition of the p38 MAPK pathway.
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Affiliation(s)
- Jing Wang
- Center of Kidney Dialysis, The Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Bing Wu
- Center of Kidney Dialysis, The Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Yanting Zhu
- Center of Kidney Dialysis, The Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Gang Jin
- Center of Kidney Dialysis, The Shaanxi Provincial People's Hospital, Xi'an 710068, China
| | - Xiaobao Fan
- Center of Kidney Dialysis, The Shaanxi Provincial People's Hospital, Xi'an 710068, China
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Jiang Y, You S, Zhang Y, Zhao J, Wang D, Zhao D, Li M, Wang C. Enhancing Bioactive Components of Euryale ferox with Lactobacillus curvatus to Reduce H2O2-Induced Oxidative Stress in Human Skin Fibroblasts. Antioxidants (Basel) 2022; 11:antiox11101881. [PMID: 36290604 PMCID: PMC9598438 DOI: 10.3390/antiox11101881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/14/2022] [Accepted: 09/19/2022] [Indexed: 12/05/2022] Open
Abstract
This study investigated the effects of Lactobacillus curvatus fermentation on the oxidative stress attenuating effects of Euryale ferox on H2O2-induced human skin fibroblasts (HSF). The results showed that Lactobacillus curvatus fermentation (i) increases the content of the various bioactive components of Euryale ferox and is found to have smaller molecular weights of polysaccharides and polypeptides; (ii) increases the overall intracellular and extracellular antioxidant capacity of H2O2-induced HSF while reducing reactive oxygen species (ROS) levels. Superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) all showed simultaneous increases in activity. Aside from that, the Nrf2 and MAPK signaling pathways are activated to regulate downstream-associated proteins such as the Bax/Bcl-2 protein ratio, matrix metalloproteinase 1 (MMP-1) activity, and human type I collagen (COL-1). These results suggested that the fermentation of Euryale ferox with Lactobacillus curvatus enhances its antioxidant capacity and attenuates apoptosis and senescence caused by oxidative stress.
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Affiliation(s)
- Yanbing Jiang
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
| | - Shiquan You
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
| | - Yongtao Zhang
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
| | - Jingsha Zhao
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
| | - Dongdong Wang
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
| | - Dan Zhao
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
| | - Meng Li
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
- Correspondence: ; Tel.: +86-13426015179
| | - Changtao Wang
- Beijing Key Laboratory of Plant Resource Research and Development, College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100040, China
- Institute of Cosmetic Regulatory Science, Beijing Technology and Business University, Beijing 100040, China
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Du B, Yin Y, Wang Y, Fu H, Sun H, Yue Z, Yu S, Zhang Z. Calcium dobesilate efficiency in the treatment of diabetic kidney disease through suppressing MAPK and chemokine signaling pathways based on clinical evaluation and network pharmacology. Front Pharmacol 2022; 13:850167. [PMID: 36160448 PMCID: PMC9493050 DOI: 10.3389/fphar.2022.850167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 08/11/2022] [Indexed: 11/30/2022] Open
Abstract
Aims: To evaluate the effectiveness and potential mechanism of calcium dobesilate (CaD) in diabetic kidney disease (DKD) patients. Methods: We searched for available randomized controlled studies on DKD patients’ treatment with CaD through open databases. Continuous variables were expressed as standardized mean difference (SMD) with a 95% confidence interval (CI). The putative targets and possible pathways of CaD on DKD were analyzed by network pharmacology. Molecular docking was employed to verify the match between CaD and the target genes. Results: In the meta-analysis, 42 trials were included, involving 3,671 DKD patients, of which 1,839 received CaD treatment in addition to conventional treatment, while 1,832 received conventional treatment. Compared with routine therapy, the levels of serum creatinine (Scr) and blood urea nitrogen (BUN) significantly decreased in the CaD treatment (early stage of DKD, Scr: p < 0.00001; BUN: p < 0.0001; clinical stage of DKD, Scr: p < 0.00001; BUN: p < 0.00001; kidney failure stage, Scr: p = 0.001; BUN: p = 0.004). The levels of serum cystatin C (Cys-C), urine levels of molecules reflecting kidney function (urinary albumin excretion rate (UAER) and micro glycoprotein), and inflammatory factors [hypersensitive c-reactive protein (hs-CRP)] were reduced compared with control groups, while glomerular filtration rate (GFR) was increased in patients treated with CaD for 12 weeks. CaD also showed a better effect on improving endothelial function. Network pharmacology results showed that the interaction pathway between CaD and DKD was mainly enriched in MAPK and chemokine signaling pathways. AKT1, CASP3, IGF1, MAPK8, and CCL5 might be the key targets for CaD in treating DKD. Conclusion: Combination with CaD is effective and safe in patients with DKD. Inhibition of MAPK and chemokine signaling pathways might be vital in treating CaD in DKD patients.
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Affiliation(s)
- Bingyu Du
- Department of Endocrinology and Metabology, Shandong University of Traditional Chinese Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
- Department of Rehabilitation Medicine, The Second Clinical Medical College and Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- College of Rehabilitation Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yanyan Yin
- Department of Endocrinology and Metabology, Shandong University of Traditional Chinese Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
- Department of Rehabilitation Medicine, The Second Clinical Medical College and Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
- College of Rehabilitation Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yuqing Wang
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Endocrinology and Metabology, Shandong Institute of Nephrology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Hui Fu
- The Clinical Medical College, Cheeloo Medical College of Shandong University, Jinan, China
| | - Helin Sun
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Endocrinology and Metabology, Shandong Institute of Nephrology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Zhaodi Yue
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- College of Rehabilitation Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Shaohong Yu
- Department of Endocrinology and Metabology, Shandong University of Traditional Chinese Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
- Department of Rehabilitation Medicine, The Second Clinical Medical College and Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
- *Correspondence: Shaohong Yu, ; Zhongwen Zhang,
| | - Zhongwen Zhang
- Department of Endocrinology and Metabology, Shandong University of Traditional Chinese Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
- Department of Rehabilitation Medicine, The Second Clinical Medical College and Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
- Shandong Key Laboratory of Rheumatic Disease and Translational Medicine, Department of Endocrinology and Metabology, Shandong Institute of Nephrology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, China
- *Correspondence: Shaohong Yu, ; Zhongwen Zhang,
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Badal SS, Al Tuhaifi T, Yu YF, Lopez D, Plato CT, Joly K, Breckenridge DG, Yang HC, Liles JT, Fogo AB. Selonsertib Enhances Kidney Protection Beyond Standard of Care in a Hypertensive, Secondary Glomerulosclerosis CKD Model. KIDNEY360 2022; 3:1169-1182. [PMID: 35919527 PMCID: PMC9337896 DOI: 10.34067/kid.0001032022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/05/2022] [Indexed: 01/12/2023]
Abstract
Background Despite widespread use of renin-aldosterone-angiotensin system inhibitors and the benefits of lowering glomerular pressure in patients with CKD, there remains a major unmet need for therapies targeting underlying causes of CKD progression. Apoptosis signal-regulating kinase 1 (ASK1) promotes apoptosis and glomerulosclerosis, and is implicated in the progression of diabetic kidney disease (DKD), a major cause of CKD. Selonsertib is a selective ASK1 inhibitor currently in clinical development for the treatment of DKD. We examined the added benefits of selonsertib on existing glomerulosclerosis and related molecular pathways in the nondiabetic 5/6 nephrectomy (5/6 Nx) rat model in combination with the angiotensin-converting enzyme inhibitor (ACEI) enalapril. Methods Male Sprague Dawley rats underwent 5/6 Nx with kidney biopsy 8 weeks later for assessment of glomerulosclerosis, and were randomized to four treatment groups with equal glomerulosclerosis: selonsertib, enalapril, combination (selonsertib plus enalapril), and untreated controls. Serum creatinine, systolic BP (SBP), and urinary albumin were measured at intervals. Animals were euthanized at week 12 for histologic, biochemical, and molecular analyses. Results All rats developed hypertension, albuminuria, and glomerulosclerosis by week 8. Kidney function further declined, and glomerulosclerosis and albuminuria progressively increased in controls from week 8 to 12. Enalapril treatment alone from week 8 to 12 reduced SBP versus controls, decreased albuminuria, and resulted in numerically lower glomerulosclerosis. Selonsertib alone had no effect on SBP but preserved kidney function. Combined treatment significantly reduced glomerulosclerosis, with more regression than either monotherapy. Enalapril treatment resulted in fewer interstitial macrophages, whereas selonsertib treatment reduced apoptosis and podocyte loss. RNA-seq revealed that combined treatment influenced pathways related to extracellular matrix and wound healing. Conclusions Selonsertib targets a novel, nonhemodynamic pathway in CKD. Our data suggest that ASK1 inhibition, when combined with ACEI, has additive effects to reduce progression of glomerulosclerosis, attenuate kidney function decline, and reduce podocyte loss.
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Affiliation(s)
| | - Tareq Al Tuhaifi
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Ya-Fen Yu
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
- Fourth Hospital, Wuxi, Anhui, China
| | - David Lopez
- Gilead Sciences, Inc., Foster City, California
| | | | | | | | - Hai-Chun Yang
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
| | | | - Agnes B. Fogo
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee
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Woznowski MP, Potthoff SA, Königshausen E, Haase R, Hoch H, Meyer-Schwesinger C, Wiech T, Stegbauer J, Rump LC, Sellin L, Quack I. Inhibition of p38 MAPK decreases hyperglycemia-induced nephrin endocytosis and attenuates albuminuria. J Mol Med (Berl) 2022; 100:781-795. [PMID: 35451598 PMCID: PMC9110524 DOI: 10.1007/s00109-022-02184-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 01/20/2022] [Accepted: 02/22/2022] [Indexed: 11/26/2022]
Abstract
Abstract Chronic hyperglycemia, as in diabetes mellitus, may cause glomerular damage with microalbuminuria as an early sign. Noteworthy, even acute hyperglycemia can increase glomerular permeability before structural damage of the glomerular filter can be detected. Despite intensive research, specific antiproteinuric therapy is not available so far. Thus, a deeper understanding of the molecular mechanisms of albuminuria is desirable. P38 MAPK signaling is involved in the development of hyperglycemia-induced albuminuria. However, the mechanism of increased p38 MAPK activity leading to increased permeability and albuminuria remained unclear. Recently, we demonstrated that acute hyperglycemia triggers endocytosis of nephrin, the key molecule of the slit diaphragm, and induces albuminuria. Here, we identify p38 MAPK as a pivotal regulator of hyperglycemia-induced nephrin endocytosis. Activated p38 MAPK phosphorylates the nephrin c-terminus at serine 1146, facilitating the interaction of PKCα with nephrin. PKCα phosphorylates nephrin at threonine residues 1120 and 1125, mediating the binding of β-arrestin2 to nephrin. β-arrestin2 triggers endocytosis of nephrin by coupling it to the endocytic machinery, leading to increased glomerular permeability. Pharmacological inhibition of p38 MAPK preserves nephrin surface expression and significantly attenuates albuminuria. Key messages Acute hyperglycemia triggers endocytosis of nephrin. Activated p38 MAPK phosphorylates the nephrin c-terminus at serine 1146, facilitating the interaction of PKCα with nephrin. PKCα phosphorylates nephrin at threonine residues 1120 and 1125, mediating the binding of β-arrestin2 to nephrin. β-arrestin2 triggers endocytosis of nephrin by coupling it to the endocytic machinery, leading to a leaky glomerular filter. Pharmacological inhibition of p38 MAPK preserves nephrin surface expression and significantly attenuates albuminuria under hyperglycemic conditions.
Supplementary Information The online version contains supplementary material available at 10.1007/s00109-022-02184-5.
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Affiliation(s)
| | | | - Eva Königshausen
- Department of Nephrology, Medical Faculty, Heinrich-Heine University, 40225, Düsseldorf, Germany
| | - Raphael Haase
- Department of Nephrology, Medical Faculty, Heinrich-Heine University, 40225, Düsseldorf, Germany
| | - Henning Hoch
- Department of Nephrology, Medical Faculty, Heinrich-Heine University, 40225, Düsseldorf, Germany
| | - Catherine Meyer-Schwesinger
- Institute of Cellular and Integrative Physiology, University Clinic Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Thorsten Wiech
- Institute of Pathology, Nephropathology Section, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Johannes Stegbauer
- Department of Nephrology, Medical Faculty, Heinrich-Heine University, 40225, Düsseldorf, Germany
| | - Lars Christian Rump
- Department of Nephrology, Medical Faculty, Heinrich-Heine University, 40225, Düsseldorf, Germany
| | - Lorenz Sellin
- Department of Nephrology, Medical Faculty, Heinrich-Heine University, 40225, Düsseldorf, Germany
| | - Ivo Quack
- Emergency Department, Klinikum Konstanz, 78464, Konstanz, Germany
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11
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Cardamomin protects from diabetes-induced kidney damage through modulating PI3K/AKT and JAK/STAT signaling pathways in rats. Int Immunopharmacol 2022; 107:108610. [PMID: 35219163 DOI: 10.1016/j.intimp.2022.108610] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/24/2022] [Accepted: 02/03/2022] [Indexed: 12/19/2022]
Abstract
BACKGROUND Diabetic nephropathy is one of the common complications of diabetes mellitus, which seriously affects the life quality and health of patients. In this study, we aimed to investigate the function of cardamonin (CAD) in diabetes-induced kidney damage in rats. METHODS The normal rat kidney tubular epithelial cells (NRK-52E) were pre-treated with different doses of CAD and then stimulated with methylglyoxal (MGO). Streptozotocin (STZ) induced diabetes rat model were received different doses of CAD treatment. MTT, EdU, Transwell, and flow cytometry was used to detect cell viability, proliferation, migration, and apoptosis. Western blot analysis was used to detect the expression of apoptosis related proteins, advanced glycation end-products (AGEs), receptor for AGEs (RAGE), epithelial mesenchymal transition (EMT) related proteins, phosphatidylinositol 3-kinase/protein kinase B (PI3K/AKT) pathway related proteins, and janus kinas/signal transducer and activator of transcription 3 (JAK/STAT3) related proteins. ELISA assay was used to detect the levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β). The levels of malondialdehyde (MDA), glutathione (GSH), and superoxide dismutase (SOD) were detected using commercial kit. Hematoxylin and eosin staining was used to assess pathological changes in rat kidney. RESULTS Compared with control group, MGO reduced cell viability and proliferation, enhanced migration and apoptosis of NRK-52E cells, while CAD inhibited these effects induced by MGO in NRK-52E cells. Moreover, CAD increased Bcl-2 expression and decreased the expression of Bax and cleaved caspase-3 in MGO-treated NRK-52E cells. Compared with control group, MGO increased the AGEs formation, the expression of RAGE and p-p65, the levels of TNF-α, IL-6, IL-1β, MDA in NRK-52E cells and reduced the levels of GSH and SOD, while treatment of CAD dose-dependently prevented these results. In addition, CAD attenuated MGO-induced EMT of MGO-treated NRK-52E cells. Mechanically, we identified that CAD repressed PI3K/AKT and JAK/STAT3 signaling in NRK-52E cells. Importantly, the kidney injury of diabetes rats was attenuated by CAD. Besides, STZ-induced inflammatory response, oxidative stress, and phosphorylation levels of PI3K, AKT, JAK2, and STAT3 were reduced by CAD in the rats. CONCLUSION CAD protects from diabetes-induced kidney damage through modulating PI3K/AKT and JAK/STAT signaling pathways in rats.
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Heparanase promotes endothelial-to-mesenchymal transition in diabetic glomerular endothelial cells through mediating ERK signaling. Cell Death Dis 2022; 8:67. [PMID: 35173145 PMCID: PMC8850459 DOI: 10.1038/s41420-022-00858-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 01/10/2022] [Accepted: 01/27/2022] [Indexed: 11/15/2022]
Abstract
Glomerular endothelial cells (GEnCs) dysfunction occurs at the early stage of diabetic nephropathy (DN). One of its characteristics is endothelial-to-mesenchymal transition (EndMT). Heparanase (HPSE) is the only known mammalian endoglycosidase capable of degrading heparin sulfates and has a prominent role in DN pathogenesis. However, whether HPSE induces EndMT of GEnCs remains unknown. This study aimed to determine the effect and potential mechanism of HPSE on GEnCs phenotype under high-glucose conditions. In the early development of streptozotocin (STZ)-induced diabetic mice, HPSE overexpression was positively correlated with renal injury and the number of GEnCs undergoing EndMT, which was characterized by loss of endothelial marker CD31 and gain of mesenchymal markers including α-SMA and Snail1/2 by double immunofluorescence staining. Bioinformatics analysis revealed a positive correlation between HPSE and ERK. The counts of double positive staining of CD31 and p-ERK1/2 was significantly increased in the glomeruli of STZ-induced diabetic mice compared with sham mice. In cultured GEnCs, high glucose dramatically upregulated the expressions of HPSE and p-ERK1/2, both of which were markedly blocked by HPSE siRNA. Furthermore, recombinant mouse HPSE (rmHPSE) promoted the expressions of mesenchymal markers and p-ERK1/2 in a dosage- and time-dependent manner. U0126, a specific MEK/ERK inhibitor, significantly inhibited either high glucose or rmHPSE-induced EndMT of GEnCs. These data indicate that high glucose induces EndMT of GEnCs at least partially through upregulating HPSE and that HPSE promotes EndMT of GEnCs via activating ERK signaling. This study improves understanding the crucial role of HPSE in DN development and progression.
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The Role of Vitamin D in Diabetic Nephropathy: A Translational Approach. Int J Mol Sci 2022; 23:ijms23020807. [PMID: 35054991 PMCID: PMC8775873 DOI: 10.3390/ijms23020807] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 12/29/2022] Open
Abstract
According to several animal and human studies, vitamin D appears to play a significant role in the development of diabetic nephropathy. However, the possible renoprotective effect of vitamin D and its influence on the reversal of already existing renal damage remains doubtful. At this moment, there are a few hypotheses concerning the underlying molecular and genetic mechanisms including the link between vitamin D and inflammation, oxidative stress, and extracellular matrix accumulation. The present review aims to investigate the potential role of vitamin D in the development of diabetic kidney disease from a translational approach.
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Li H, Xiong J, Du Y, Huang Y, Zhao J. Dual-Specificity Phosphatases and Kidney Diseases. KIDNEY DISEASES (BASEL, SWITZERLAND) 2022; 8:13-25. [PMID: 35224004 DOI: 10.1159/000520142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 10/09/2021] [Indexed: 12/21/2022]
Abstract
BACKGROUND Dual-specificity phosphatases (DUSPs) belong to the family of protein tyrosine phosphatases, which can dephosphorylate both serine/threonine and tyrosine residues. During the past decades, DUSPs have been implicated in various physiological and pathological activities. Besides mitogen-activated protein kinases (MAPKs) as the main substrates, other protein and nonprotein substrates can also be dephosphorylated by DUSPs. Aberrant regulations of DUSPs have been found in various diseases such as cancer, neurological disorders, and kidney diseases, suggesting the involvement of DUSPs in the pathogenesis of diseases. SUMMARY In this review, we summarize the general characteristics of DUSPs and the research progress made in the field of kidney diseases, including diabetic nephropathy, hypertensive nephropathy, chronic kidney disease, acute kidney injury, and lupus nephritis. As the main biochemical function of DUSPs is to dephosphorylate MAPKs activity, decreased DUSPs are found in kidney disease models, whereas forced DUSPs expression reverses the disease presentation, which was proved by using transgenic or gene knockout model. KEY MESSAGES Mounting evidence demonstrates that DUSPs have essential physiological and pathological functions in kidney disease. Fully understanding the functions and mechanisms of DUSPs in kidney disease contributes to their clinical application in translation medicine.
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Affiliation(s)
- Haiyang Li
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jiachuan Xiong
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yu Du
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yinghui Huang
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jinghong Zhao
- Department of Nephrology, The Key Laboratory for the Prevention and Treatment of Chronic Kidney Disease of Chongqing, Chongqing Clinical Research Center of Kidney and Urology Diseases, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
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15
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Mahesaniya A, Williamson CR, Keyvani Chahi A, Martin CE, Mitro AE, Lu P, New LA, Watson KL, Moorehead RA, Jones N. Sex Differences in Glomerular Protein Expression and Effects of Soy-Based Diet on Podocyte Signaling. Can J Kidney Health Dis 2022; 9:20543581221121636. [PMID: 36199279 PMCID: PMC9528100 DOI: 10.1177/20543581221121636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Indexed: 12/02/2022] Open
Abstract
Background: Kidney disease is a major public health issue arising from loss of glomerular podocyte function, and there are considerable sex differences in its prognosis. Evidence suggests a renoprotective effect of estrogen and soy diet-derived phytoestrogens, although the molecular basis for this is poorly understood. Objective: Here, we aim to assess sex differences in expression of key proteins associated with podocyte survival and determine the effects of dietary soy on glomerular and podocyte signaling. Methods: Male and female FVB mice were fed control, low (1%), and high (20%) doses of isolated soy protein (ISP) in utero and until 100 days of age. Spot urine was collected to measure proteinuria and isolated glomeruli were used to quantify activated and total levels of nephrin, Akt, and ERK1/2. To investigate protective effects of specific soy phytoestrogens, cultured podocytes were treated with or without daidzein and subject to control or high glucose as a model of podocyte injury. Results: Nephrin and Akt were elevated at baseline in glomeruli from females compared to males. Both sexes that were fed 1% and 20% ISP displayed robust increases in total glomerular Akt compared to controls, and these effects were more prominent in females. A similar trend at both doses in both sexes was observed with activated Akt and total nephrin. Notably, males exclusively showed increased phosphorylation of nephrin and extracellular signal-regulated kinase (ERK) at the 1% ISP dose; however, no overt changes in urinary albumin excretion or podocin levels were observed, suggesting that the soy diets did not impair podocyte function. Finally, in cultured male and female podocytes, daidzein treatment suppressed high glucose-induced ERK activation. Conclusions: Together, our findings reveal a putative mechanism to explain the protective influence of sex on kidney disease progression, and they provide further evidence to support a beneficial role for dietary soy in preserving glomerular function.
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Affiliation(s)
- Afreeda Mahesaniya
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
| | - Casey R. Williamson
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
| | - Ava Keyvani Chahi
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
- Present address: Department of Biochemistry & Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Claire E. Martin
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
- Present address: Lunenfeld-Tanenbaum Research Institute, Toronto, ON, Canada
| | - Alexander E. Mitro
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
| | - Peihua Lu
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
| | - Laura A. New
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
| | | | | | - Nina Jones
- Department of Molecular and Cellular Biology, University of Guelph, ON, Canada
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Zhang J, Ding T, Tang D, Wang J, Huang P. Formyl peptide receptor 1 promotes podocyte injury through regulation of mitogen-activated protein kinase pathways. Exp Biol Med (Maywood) 2021; 247:87-96. [PMID: 34565207 DOI: 10.1177/15353702211047451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Podocyte injury contributes to glomerular injury and is implicated in the pathogenesis of diabetic nephropathy. Formyl peptide receptor (FPR) 1 is abundantly expressed in neutrophils and mediates intracellular transport of Ca 2+. Intracellular Ca 2+ regulates pathological process in renal podocyte and plays a role in diabetic nephropathy. However, the role of formyl peptide receptor 1 in podocyte injury of diabetic nephropathy has not been reported yet. Firstly, a rat model with diabetic nephropathy was established by streptozotocin injection, and a cell model was established via high glucose treatment of mouse podocytes (MPC5). Formyl peptide receptor 1 was enhanced in streptozotocin-induced rats and high glucose-treated MPC5. Secondly, streptozotocin injection promoted the glomerular injury with decreased nephrin and podocin. However, tail injection with adenovirus containing shRNA for silencing of formyl peptide receptor 1 attenuated streptozotocin-induced glomerular injury and the decrease in nephrin and podocin. Moreover, silencing of formyl peptide receptor 1 repressed cell apoptosis of podocytes in diabetic rats and high glucose-treated MPC5. Lastly, protein expression levels of p-p38, p-ERK, and p-JNK protein were up-regulated in streptozotocin-induced rats and high glucose-treated MPC5. Silencing of formyl peptide receptor 1 attenuated high glucose-induced increase in p-p38, p-ERK, and p-JNK in MPC5, and over-expression of formyl peptide receptor 1 aggravated high glucose-induced increase in p-p38, p-ERK, and p-JNK. In conclusion, inhibition of formyl peptide receptor 1 preserved glomerular function and protected against podocyte dysfunction in diabetic nephropathy.
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Affiliation(s)
- Jun Zhang
- The Second Affiliated Hospital, Department of Nephropathy and Rheumatism, Hunan Province End Stage Renal Disease Clinical Medical Research Center, Hengyang Medical school, University of South China, Hengyang hunan 421001, China
| | - Ting Ding
- The Second Affiliated Hospital, Department of Nephropathy and Rheumatism, Hunan Province End Stage Renal Disease Clinical Medical Research Center, Hengyang Medical school, University of South China, Hengyang hunan 421001, China
| | - Dongxing Tang
- The Second Affiliated Hospital, Department of Nephropathy and Rheumatism, Hunan Province End Stage Renal Disease Clinical Medical Research Center, Hengyang Medical school, University of South China, Hengyang hunan 421001, China
| | - Jianping Wang
- The Second Affiliated Hospital, Department of Endocrine, Hengyang Medical school, University of South China, Hengyang hunan 421001, China
| | - Peng Huang
- Department of Nephrology, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise City 533001, China
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Ma L, Wu F, Shao Q, Chen G, Xu L, Lu F. Baicalin Alleviates Oxidative Stress and Inflammation in Diabetic Nephropathy via Nrf2 and MAPK Signaling Pathway. Drug Des Devel Ther 2021; 15:3207-3221. [PMID: 34321869 PMCID: PMC8313380 DOI: 10.2147/dddt.s319260] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/30/2021] [Indexed: 11/23/2022] Open
Abstract
Background Oxidative stress and inflammation play essential roles in the development and progression of diabetic nephropathy (DN). Baicalin (BAI), a natural flavonoid, has been showed to have a renoprotective effect in various renal diseases. However, its underlying mechanisms in DN remain unclear. In this study, we explored the potential effects and underlying mechanisms of BAI on DN using a spontaneous DN model. Methods The protective effects of BAI on DN have been evaluated by detecting DN-related biochemical indicators, kidney histopathology and cell apoptosis. After that, we examined the level of renal oxidative stress and inflammation to explain BAI’s renoprotective effects. Then, Nrf2 pathway was tested to clarify its antioxidant activity, and kidney transcriptomics was conducted to elucidate its anti-inflammatory activity. Finally, Western blot was applied for final mechanism verification. Results Our results found that BAI effectively ameliorated diabetic conditions, proteinuria, renal histopathological changes and cell apoptosis in DN. BAI significantly improved the kidney levels of glutathione peroxidase (GSH-PX), superoxide dismutase (SOD) and catalase (CAT), and reduced malondialdehyde (MDA) level. Meanwhile, the infiltration of inflammatory cells including T-lymphocytes, T-helper cells, neutrophils and macrophages, and the mRNA levels of pro-inflammatory cytokines (IL-1β, IL-6, MCP-1 and TNFα) were also obviously inhibited by BAI. Afterward, Western blot found that BAI significantly activated Nrf2 signaling and increased the expression of downstream antioxidant enzymes (HO-1, NQO-1). Kidney transcriptomics revealed that the inhibition of MAPK signaling pathway may contribute to BAI’s anti-inflammatory activity, which has also been verified in later experiment. BAI treatment did obviously inhibit the activation of canonical pro-inflammatory signaling pathway MAPK family, such as Erk1/2, JNK and P38. Conclusion In summary, our data demonstrated that BAI can treat DN by alleviating oxidative stress and inflammation, and its underlying mechanisms were associated with the activation of Nrf2-mediated antioxidant signaling pathway and the inhibition of MAPK-mediated inflammatory signaling pathway.
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Affiliation(s)
- Leyi Ma
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Fan Wu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Qingqing Shao
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Guang Chen
- Department of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Lijun Xu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
| | - Fuer Lu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People's Republic of China
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Role of Dendritic Cell in Diabetic Nephropathy. Int J Mol Sci 2021; 22:ijms22147554. [PMID: 34299173 PMCID: PMC8308035 DOI: 10.3390/ijms22147554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/09/2021] [Accepted: 07/10/2021] [Indexed: 11/18/2022] Open
Abstract
Diabetic nephropathy (DN) is one of the most significant microvascular complications in diabetic patients. DN is the leading cause of end-stage renal disease, accounting for approximately 50% of incident cases. The current treatment options, such as optimal control of hyperglycemia and elevated blood pressure, are insufficient to prevent its progression. DN has been considered as a nonimmune, metabolic, or hemodynamic glomerular disease initiated by hyperglycemia. However, recent studies suggest that DN is an inflammatory disease, and immune cells related with innate and adaptive immunity, such as macrophage and T cells, might be involved in its development and progression. Although it has been revealed that kidney dendritic cells (DCs) accumulation in the renal tissue of human and animal models of DN require activated T cells in the kidney disease, little is known about the function of DCs in DN. In this review, we describe kidney DCs and their subsets, and the role in the pathogenesis of DN. We also suggest how to improve the kidney outcomes by modulating kidney DCs optimally in the patients with DN.
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Luo XM, Yan C, Feng YM. Nanomedicine for the treatment of diabetes-associated cardiovascular diseases and fibrosis. Adv Drug Deliv Rev 2021; 172:234-248. [PMID: 33417981 DOI: 10.1016/j.addr.2021.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 12/25/2020] [Accepted: 01/01/2021] [Indexed: 02/08/2023]
Abstract
Cardiomyopathy and fibrosis are the main causes of heart failure in diabetes patients. For therapeutic purposes, a delivery system is required to enhance antidiabetic drug efficacy and specifically target profibrotic pathways in cardiomyocytes. Nanoparticles (NPs) have distinct advantages, including biocompatibility, bioavailability, targeting efficiency, and minimal toxicity, which make them ideal for antidiabetic treatment. In this review, we overview the latest information on the pathogenesis of cardiomyopathy and fibrosis in diabetes patients. We summarize how NP applications improve insulin and liraglutide efficacy and their sustained release upon oral administration. We provide a comprehensive review of the results of NP clinical trials in diabetes patients and of animal studies investigating the effects of NP-mediated anti-fibrotic treatments. Collectively, the application of advanced NP delivery systems in the treatment of cardiomyopathy and fibrosis in diabetes patients is a promising and innovative therapeutic strategy.
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Alshehri AS. Kaempferol attenuates diabetic nephropathy in streptozotocin-induced diabetic rats by a hypoglycaemic effect and concomitant activation of the Nrf-2/Ho-1/antioxidants axis. Arch Physiol Biochem 2021:1-14. [PMID: 33625930 DOI: 10.1080/13813455.2021.1890129] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This study examined the protective effect of Kaempferol against streptozotocin-induced diabetic nephropathy (DN) in rats and studies the underlying mechanisms. Rats were divided into 4 groups as control, control + Kaempferol, STZ, and STZ + Kaempferol. All treatments were conducted for 8 weeks daily after the induction of diabetes. Kaempferol prevented STZ-induced weight and food loss and attenuated renal damage and the alterations in all biochemical related parameters. Concomitantly, Kaempferol reduced renal levels of TNF-α and IL-6, cleaved caspase-3, p38, and Bax, suppressing JNK phosphorylation and NF-κB p65 transactivation, and upregulation of Bcl-2. In both control and STZ-diabetic rats, Kaempferol reduced fasting glucose levels, increased fasting insulin levels and HOMA-β, reduced the levels of ROS and MDA, stimulated SOD and GSH levels, and increased the expression of Nrf2 and HO-1. In conclusion, Kaempferol prevents STZ-induced diabetic nephropathy, mainly, by antioxidant potential, mediated by the upregulation of the Nrf-2/HO-1 axis.
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Affiliation(s)
- Ali S Alshehri
- Biology Department, College of Science, King Khalid University, Abha, Saudi Arabia
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21
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A novel podocyte protein, R3h domain containing-like, inhibits TGF-β-induced p38 MAPK and regulates the structure of podocytes and glomerular basement membrane. J Mol Med (Berl) 2021; 99:859-876. [PMID: 33620517 DOI: 10.1007/s00109-021-02050-w] [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: 04/26/2020] [Revised: 01/14/2021] [Accepted: 02/10/2021] [Indexed: 12/14/2022]
Abstract
Not only in kidney glomerular physiological function but also glomerular pathology especially in diabetic condition, glomerular podocytes play pivotal roles. Therefore, it is important to increase our knowledge about the genes and proteins expressed in podocytes. Recently, we have identified a novel podocyte-expressed gene, R3h domain containing-like (R3hdml) and analyzed its function in vivo as well as in vitro. Transforming growth factor-β (TGF-β) signaling regulated the expression of R3hdml. And R3hdml inhibited p38 mitogen-activated protein kinase phosphorylation, which was induced by TGF-β, leading to the amelioration of podocyte apoptosis. Furthermore, a lack of R3hdml in mice significantly worsened glomerular function in streptozotocin (STZ)-induced diabetes, while overexpression of R3hdml ameliorated albuminuria in STZ-induced diabetes. Our results surmise that the functional analyses of R3hdml may lead to the development of novel therapeutic strategies for diabetic nephropathy in the future. KEY MESSAGES: • A novel podocyte expressed protein R3h domain containing-like was identified. • R3HDML inhibits podocyte apoptosis by inhibiting TGF-β-mediated p38 MAPK signaling. • Overexpression of R3HDML ameliorates albuminuria in STZ-induced diabetes mice. • R3HDML may prove to be a novel therapeutic strategy for diabetic nephropathy.
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22
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Casagrande V, Iuliani G, Menini S, Pugliese G, Federici M, Menghini R. Restoration of renal TIMP3 levels via genetics and pharmacological approach prevents experimental diabetic nephropathy. Clin Transl Med 2021; 11:e305. [PMID: 33634991 PMCID: PMC7862169 DOI: 10.1002/ctm2.305] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 01/13/2021] [Accepted: 01/18/2021] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Diabetic nephropathy (DN), one of the major complications of diabetes, is characterized by albuminuria, glomerulosclerosis, and progressive loss of renal function. Loss of TIMP3, an Extracellular Matrix bound protein affecting both inflammation and fibrosis, is a hallmark of DN in human subjects and mouse models. METHODS This study was designed to provide evidences that the modulation of the system involving TIMP3 and its target A Disintegrin And Metalloproteinase 17 (ADAM17), may rescue kidney pathology in diabetic mice. Mice with cell-targeted overexpression of TIMP3 in myeloid cells (MacT3), podocyte-specific ADAM17 knockout mice (∆PodA17), and DBA/2J mice, were rendered diabetic at 8 weeks of age with a low-dose streptozotocin protocol. DBA/2J mice were administered new peptides based on the human TIMP3 N-terminal domain, specifically conjugated with G3C12, a carrier peptide highly selective and efficient for transport to the kidney. Twelve weeks after Streptozotocin injections, 24-hour albuminuria was determined by ELISA, kidney morphometry was analyzed by periodic acid-shift staining, and Real Time-PCR and western blot analysis were performed on mRNA and protein extracted from kidney cortex. RESULTS Our results showed that both genetic modifications and peptides treatment positively affect renal function and structure in diabetic mice, as indicated by a significant and consistent decline in albuminuria along with reduction in glomerular lesions, as indicated by reduced mesangial expansion and glomerular hypertrophy, decreased deposition of extracellular matrix in the mesangium, diminished protein expression of the NADPH oxidases 4 (NOX4), and the improvement of podocyte structural markers such as WT1, nephrin, and podocin. Moreover, the positive effects were exerted through a mechanism independent from glycemic control. CONCLUSIONS In diabetic mice the targeting of TIMP3 system improved kidney structure and function, representing a valid approach to develop new avenues to treat this severe complication of diabetes.
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Affiliation(s)
- Viviana Casagrande
- Departments of Systems MedicineUniversity of Rome “Tor Vergata”RomeItaly
- Research Unit of Diabetes and Endocrine DiseasesFondazione IRCCS “Casa Sollievo della Sofferenza”San Giovanni RotondoItaly
| | - Giulia Iuliani
- Departments of Systems MedicineUniversity of Rome “Tor Vergata”RomeItaly
| | - Stefano Menini
- Department of Clinical and Molecular Medicine“Sapienza” UniversityRomeItaly
| | - Giuseppe Pugliese
- Department of Clinical and Molecular Medicine“Sapienza” UniversityRomeItaly
| | - Massimo Federici
- Departments of Systems MedicineUniversity of Rome “Tor Vergata”RomeItaly
- Center for AtherosclerosisDepartment of Medical Sciences Policlinico Tor Vergata UniversityRomeItaly
| | - Rossella Menghini
- Departments of Systems MedicineUniversity of Rome “Tor Vergata”RomeItaly
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Zhang L, Wang Z, Liu R, Li Z, Lin J, Wojciechowicz ML, Huang J, Lee K, Ma'ayan A, He JC. Connectivity Mapping Identifies BI-2536 as a Potential Drug to Treat Diabetic Kidney Disease. Diabetes 2021; 70:589-602. [PMID: 33067313 PMCID: PMC7881868 DOI: 10.2337/db20-0580] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 10/05/2020] [Indexed: 12/11/2022]
Abstract
Diabetic kidney disease (DKD) remains the most common cause of kidney failure, and the treatment options are insufficient. Here, we used a connectivity mapping approach to first collect 15 gene expression signatures from 11 DKD-related published independent studies. Then, by querying the Library of Integrated Network-based Cellular Signatures (LINCS) L1000 data set, we identified drugs and other bioactive small molecules that are predicted to reverse these gene signatures in the diabetic kidney. Among the top consensus candidates, we selected a PLK1 inhibitor (BI-2536) for further experimental validation. We found that PLK1 expression was increased in the glomeruli of both human and mouse diabetic kidneys and localized largely in mesangial cells. We also found that BI-2536 inhibited mesangial cell proliferation and extracellular matrix in vitro and ameliorated proteinuria and kidney injury in DKD mice. Further pathway analysis of the genes predicted to be reversed by the PLK1 inhibitor was of members of the TNF-α/NF-κB, JAK/STAT, and TGF-β/Smad3 pathways. In vitro, either BI-2536 treatment or knockdown of PLK1 dampened the NF-κB and Smad3 signal transduction and transcriptional activation. Together, these results suggest that the PLK1 inhibitor BI-2536 should be further investigated as a novel therapy for DKD.
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Affiliation(s)
- Lu Zhang
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
- Department of Nephrology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Zichen Wang
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Ruijie Liu
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Zhengzhe Li
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jennifer Lin
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Megan L Wojciechowicz
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Jiyi Huang
- Department of Nephrology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Kyung Lee
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Avi Ma'ayan
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY
| | - John Cijiang He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
- Renal Section, James J. Peters Veterans Affair Medical Center, Bronx, NY
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A novel salviadione derivative, compound 15a, attenuates diabetes-induced renal injury by inhibiting NF-κB-mediated inflammatory responses. Toxicol Appl Pharmacol 2020; 409:115322. [PMID: 33171189 DOI: 10.1016/j.taap.2020.115322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 11/01/2020] [Accepted: 11/04/2020] [Indexed: 01/01/2023]
Abstract
Diabetic nephropathy is the leading cause of renal failure worldwide. Elevated inflammatory signaling has been shown to lead to deterioration of renal function in human and experimental diabetes. We recently developed a salviadione derivative (compound 15a) that prevented microbial lipopolysaccharide-induced inflammatory responses, which are largely driven by nuclear factor-κB (NF-κB). In the present study, we have tested the hypothesis that 15a will protect kidneys from diabetes-induced dysfunction by suppressing NF-κB activation and inflammatory signaling. Treatment of diabetic mice with 15a inhibited diabetes-induced renal fibrosis, NF-κB activation, and upregulation of proinflammatory cytokines. Histologically, kidney specimens from diabetic mice treated with 15a were indistinguishable from non-diabetic controls. We confirmed our findings in cultured renal tubular epithelial cells exposed to high levels of glucose. In these cultured cells, 15a pretreatment prevented high glucose-induced NF-κB activation and expression of inflammatory cytokines. These protective effects were also reflected in reduced levels of proteins involved in matrix expansion. Overall, our studies show that a salviadione derivative, 15a, is effective in suppressing diabetes-induced NF-κB activation and inflammatory signaling.
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25
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Isoliquiritigenin prevents hyperglycemia-induced renal injuries by inhibiting inflammation and oxidative stress via SIRT1-dependent mechanism. Cell Death Dis 2020; 11:1040. [PMID: 33288747 PMCID: PMC7721869 DOI: 10.1038/s41419-020-03260-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/14/2022]
Abstract
Diabetic nephropathy (DN) as a global health concern is closely related to inflammation and oxidation. Isoliquiritigenin (ISL), a natural flavonoid compound, has been demonstrated to inhibit inflammation in macrophages. Herein, we investigated the effect of ISL in protecting against the injury in STZ-induced type 1 DN and in high glucose-induced NRK-52E cells. In this study, it was revealed that the administration of ISL not only ameliorated renal fibrosis and apoptosis, but also induced the deterioration of renal function in diabetic mice. Mediated by MAPKs and Nrf-2 signaling pathways, respectively, upstream inflammatory response and oxidative stress were neutralized by ISL in vitro and in vivo. Moreover, as further revealed by the results of molecular docking, sirtuin 1 (SIRT1) binds to ISL directly, and the involvement of SIRT1 in ISL-mediated renoprotective effects was confirmed by studies using in vitro models of SIRT1 overexpression and knockdown. In summary, by reducing inflammation and oxidative stress, ISL has a significant pharmacological effect on the deterioration of DN. The benefits of ISL are associated with the direct binding to SIRT1, the inhibition of MAPK activation, and the induction of Nrf-2 signaling, suggesting the potential of ISL for DN treatment.
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26
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Guo Y, Xie X, Zhao Y, Zhou M, Yang Y, Zhang X. Calcitriol attenuates renal tubular epithelial cells apoptosis via inhibiting p38MAPK signaling in diabetic nephropathy. Acta Diabetol 2020; 57:1327-1335. [PMID: 32556611 DOI: 10.1007/s00592-020-01554-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 05/28/2020] [Indexed: 12/11/2022]
Abstract
AIMS To observe the effect of calcitriol on tubular epithelial cells apoptosis in diabetic nephropathy (DN) and to explore the possible mechanism of its renal protection. METHODS In vivo, DN rats established by streptozocin (STZ) were treated with or without calcitriol by gavage. Rats were killed at 18 weeks after treatment. In vitro, HK-2 cells were cultured in high glucose with or without 1,25-dihydroxyvitamin D3. In some experiments, P38MAPK activator anisomycin was applied to incubate HK-2 cells. Cell apoptosis was detected by TUNEL or Annexin V-FITC/PI staining with flow cytometry. Immunohistochemical staining was used to observe the expression of VDR in kidney. Protein expression of cleaved caspase-3, Bax, Bcl-2, VDR, pp38MAPK and p38MAPK was assessed by western blotting. RESULT Calcitriol treatment ameliorated the severity of proteinuria and reduced renal tubular epithelial cells apoptosis in DN rats. In addition, calcitriol treatment significantly increased renal VDR expression and reduced the expression of p-p38MAPK in rats. In vitro, 1,25-dihydroxyvitamin D3 decreased the apoptotic rate of HK-2 cells induced by high glucose. In accord with the results from animal study, 1,25-dihydroxyvitamin D3 increased VDR expression, but decreased p-p38MAPK expression in HK-2 cells. Moreover, P38MAPK activator anisomycin blocked the anti-apoptotic effect of 1,25-dihydroxyvitamin D3 on HK-2 cells. CONCLUSIONS Calcitriol attenuates renal tubular cells apoptosis via VDR activation which inhibits p38MAPK signaling in DN rats.
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Affiliation(s)
- Yinfeng Guo
- Department of Nephrology, The First Hospital of Jiaxing, First Affilated Hospital of Jiaxing Universty, Jiaxing, 314000, Zhejiang, China
| | - Xiaotong Xie
- Institute of Nephrology, School of Medicine, ZhongDa Hospital, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Yu Zhao
- Institute of Nephrology, School of Medicine, ZhongDa Hospital, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Min Zhou
- Department of Nephrology, The Affiliated Huaian NO.1 People's Hospital of Nanjing Medical Universty, Huaian, 223001, Jiangsu, China
| | - Ying Yang
- Institute of Nephrology, School of Medicine, ZhongDa Hospital, Southeast University, Nanjing, 210009, Jiangsu, China
| | - Xiaoliang Zhang
- Institute of Nephrology, School of Medicine, ZhongDa Hospital, Southeast University, Nanjing, 210009, Jiangsu, China.
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27
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Singh B, Kumar A, Singh H, Kaur S, Kaur S, Singh Buttar H, Arora S, Singh B. Zingerone produces antidiabetic effects and attenuates diabetic nephropathy by reducing oxidative stress and overexpression of NF-κB, TNF-α, and COX-2 proteins in rats. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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28
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Dehdashtian E, Pourhanifeh MH, Hemati K, Mehrzadi S, Hosseinzadeh A. Therapeutic application of nutraceuticals in diabetic nephropathy: Current evidence and future implications. Diabetes Metab Res Rev 2020; 36:e3336. [PMID: 32415805 DOI: 10.1002/dmrr.3336] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 05/06/2020] [Accepted: 05/08/2020] [Indexed: 12/11/2022]
Abstract
Diabetes mellitus (DM) is a common metabolic disease which may cause several complications, such as diabetic nephropathy (DN). The routine medical treatments used for DM are not effective enough and have many undesirable side effects. Moreover, the global increased prevalence of DM makes researchers try to explore potential complementary or alternative treatments. Nutraceuticals, as natural products with pharmaceutical agents, have a wide range of therapeutic properties in various pathologic conditions such as DN. However, the exact underlying mechanisms have not been fully understood. The purpose of this review is to summarize recent findings on the effect of nutraceuticals on DN.
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Affiliation(s)
- Ehsan Dehdashtian
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Pourhanifeh
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Karim Hemati
- Department of Anesthesiology, Iran University of Medical Sciences, Tehran, Iran
| | - Saeed Mehrzadi
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Azam Hosseinzadeh
- Razi Drug Research Center, Iran University of Medical Sciences, Tehran, Iran
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29
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Chen L, Wang Y, Luan H, Ma G, Zhang H, Chen G. DUSP6 protects murine podocytes from high glucose‑induced inflammation and apoptosis. Mol Med Rep 2020; 22:2273-2282. [PMID: 32705203 PMCID: PMC7411363 DOI: 10.3892/mmr.2020.11317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 06/15/2020] [Indexed: 11/06/2022] Open
Abstract
Diabetic nephropathy (DN) is one of the most severe complications that can occur in patients with diabetes, and without effective and timely therapeutic intervention, can gradually progress to renal failure. Previous studies have focused on investigating the pathogenesis of DN; however, the role of dual‑specificity phosphatase 6 (DUSP6) in DN is not completely understood. Therefore, the present study aimed to investigate the role of dual‑specificity phosphatase 6 (DUSP6) in DN. DN model mice were established and the expression levels of DUSP6 in the kidney tissues and high glucose (HG)‑induced murine podocytes (MPC5 cells) were determined using immunohistochemistry, reverse transcription‑quantitative PCR and western blotting. In addition, the levels of reactive oxygen species (ROS) and inflammatory cytokines in MPC5 cells were analyzed using commercial assay kits or ELISA kits, respectively, and flow cytometric analysis was performed to analyze the rate of cell apoptosis. The present study indicated that DUSP6 expression levels were significantly decreased in DN model mice compared with control mice, and in HG‑induced MPC5 cells compared with normal glucose‑induced MPC5 cells. DUSP6 overexpression enhanced MPC5 cell viability and increased protein expression levels of cell markers, such as synaptopodin and nephrin, compared with the negative control group. DUSP6 overexpression also reduced the levels of ROS and inflammatory cytokines, including interleukin (IL)‑1β, IL‑6 and tumor necrosis factor‑α secreted by MPC5 cells under HG conditions. Moreover, compared with the HG group, cell apoptosis was inhibited by DUSP6 overexpression under HG conditions, which was further indicated by decreased expression levels of cleaved caspase‑3 and Bax. Thus, these findings indicated that DUSP6 mediated the protection against HG‑induced inflammatory response.
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Affiliation(s)
- Liqiang Chen
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Yaokun Wang
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Haiyan Luan
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Guangyu Ma
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Huiming Zhang
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
| | - Guang Chen
- School of Basic Medicine, Jiamusi University, Jiamusi, Heilongjiang 154002, P.R. China
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Lu Y, Liu B, Liu Y, Yu X, Cheng G. Dual effects of active ERK in cancer: A potential target for enhancing radiosensitivity. Oncol Lett 2020; 20:993-1000. [PMID: 32724338 PMCID: PMC7377092 DOI: 10.3892/ol.2020.11684] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 04/20/2020] [Indexed: 12/20/2022] Open
Abstract
Ionizing radiation (IR) is an important cancer treatment approach. However, radioresistance eventually occurs, resulting in poor outcomes in patients with cancer. Radioresistance is associated with multiple signaling pathways, particularly pro-survival signaling pathways. The extracellular signal-regulated kinase 1/2 (ERK1/2) cascade is an important signaling pathway that initiates several cellular processes and is regulated by various stimuli, including IR. Although numerous studies have demonstrated the pro-survival effects of active ERK, activation of ERK has also been associated with cell death, indicating that radiosensitization may occur by ERK stimulation. In this context, the present review describes the associations between ERK signaling, cancer and IR, and discusses the association between ERK and its pro-survival function in cancer cells, including stimuli, molecular mechanisms, clinical use of inhibitors and underlying limitations. Additionally, the present review introduces the view that active ERK may induce cell death, and describes the potential factors associated with this process. This review describes the various outcomes induced by active ERK to prompt future studies to aim to enhance radiosensitivity in the treatment of cancer.
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Affiliation(s)
- Yinliang Lu
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Baocai Liu
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Ying Liu
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Xinyue Yu
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Guanghui Cheng
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
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Fawzy MS, Abu AlSel BT, Al Ageeli E, Al-Qahtani SA, Abdel-Daim MM, Toraih EA. Long non-coding RNA MALAT1 and microRNA-499a expression profiles in diabetic ESRD patients undergoing dialysis: a preliminary cross-sectional analysis. Arch Physiol Biochem 2020; 126:172-182. [PMID: 30270667 DOI: 10.1080/13813455.2018.1499119] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Background: Circulating non-coding RNAs (ncRNAs) have been implicated in health and disease. This study aimed to evaluate the serum expression profile of microRNA-499a (miR-499a) and its selected bioinformatically predicted partner long-ncRNA MALAT1 (metastasis-associated lung adenocarcinoma transcript 1) in diabetes-related end-stage renal disease (ESRD) patients and to correlate the expressions with the patients' clinicolaboratory data.Subjects and methods: Real-time quantitative polymerase chain reaction was applied in diabetics with and without ESRD (n = 90 for each).Results: Serum MALAT1 expression levels were increased in the ESRD group relative to diabetics without ESRD with median (quartile) values of 10.5 (1.41-126.7) (p < .001). However, miR-499a levels were decreased in more than half of ESRD patients with a median of 0.96 (0.13-3.14). Both MALAT1 and miR-499a expression levels were inversely correlated in the ESRD patient-group.Conclusions: MALAT1 up-regulation and miR-499 down-regulation might be involved in diabetic nephropathy-related ESRD pathogenesis. Functional validation studies are warranted to confirm the MALAT1/miR-499a partnership.
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MESH Headings
- Adult
- Aged
- Base Pairing
- Base Sequence
- Cross-Sectional Studies
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/diagnosis
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/therapy
- Diabetic Nephropathies/diagnosis
- Diabetic Nephropathies/etiology
- Diabetic Nephropathies/genetics
- Diabetic Nephropathies/therapy
- Disease Progression
- Female
- Gene Expression Regulation
- Humans
- Kidney Failure, Chronic/diagnosis
- Kidney Failure, Chronic/etiology
- Kidney Failure, Chronic/genetics
- Kidney Failure, Chronic/therapy
- Male
- MicroRNAs/blood
- MicroRNAs/genetics
- Middle Aged
- RNA, Long Noncoding/blood
- RNA, Long Noncoding/genetics
- Renal Dialysis
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Affiliation(s)
- Manal S Fawzy
- Department of Biochemistry, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Baraah T Abu AlSel
- Department of Microbiology, Faculty of Medicine, Northern Border University, Arar, Saudi Arabia
| | - Essam Al Ageeli
- Department of Clinical Biochemistry (Medical Genetics), Faculty of Medicine, Jazan University, Jazan, Saudi Arabia
| | - Saeed Awad Al-Qahtani
- Department of Physiology, Faculty of Medicine, Taibah University, Almadinah Almunawwarah, Saudi Arabia
| | - Mohamed M Abdel-Daim
- Department of Pharmacology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Eman A Toraih
- Department of Histology and Cell Biology (Genetics Unit), Faculty of Medicine, Suez Canal University, Ismailia, Egypt
- Center of Excellence of Molecular and Cellular Medicine, Suez Canal University, Ismailia, Egypt
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Discovery of a 2-pyridinyl urea-containing compound YD57 as a potent inhibitor of apoptosis signal-regulating kinase 1 (ASK1). Eur J Med Chem 2020; 195:112277. [PMID: 32289582 DOI: 10.1016/j.ejmech.2020.112277] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/25/2020] [Accepted: 03/25/2020] [Indexed: 02/02/2023]
Abstract
Inhibition of MAP3K kinase ASK1 has been an attractive strategy for the treatment of nonalcoholic steatohepatitis and multiple sclerosis, among others. Herein, we reported the discovery of 2-pyridinyl urea-containing compound 14l (YD57) as a potent, small-molecule inhibitor of ASK1. 14l was selective against MAP3K kinases ASK2 and TAK1 (>140-fold), while it also inhibited several cell cycle regulating kinases with IC50 values in a range of 90-400 nM (<20-fold selectivity). As a consequence, 14l had stronger apoptosis induction, more potent G1 cell cycle arrest activities, and lower IC50 value of cell growth inhibition than that of GS4997 in HepG2 cancer cell line. On the other hand, 14l did not inhibit ASK1 and p38 phosphorylation in intact cells. We reason that the multi-target effects of 14l likely neutralized the activities caused by inhibition of cellular ASK1. Future studies of these ASK1 inhibitors should pay close attention to their kinome selectivity profile.
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33
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Ming L, Ning J, Ge Y, Zhang Y, Ruan Z. Excessive apoptosis of podocytes caused by dysregulation of microRNA-182-5p and CD2AP confers to an increased risk of diabetic nephropathy. J Cell Biochem 2019; 120:16516-16523. [PMID: 31131477 DOI: 10.1002/jcb.28911] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/08/2019] [Accepted: 03/15/2019] [Indexed: 01/28/2023]
Abstract
The functions of miR-182-5p in the pathogenesis of diabetic nephropathy (DN) remain largely unclear. Here, we studied the roles and relationship between miR-182-5p and CD2AP in the development of DN. We used real-time polymerase chain reaction (PCR) to compare miR-182-5p expression between DN and control groups, while computational analysis and luciferase assays were used to confirm CD2AP as a miR-182-5p target. Western blot and real-time PCR were then used to measure the messenger RNA (mRNA) and protein expression of CD2AP in the presence of miR-182-5p. The results showed that miR-182-5p was highly expressed in cells isolated from people with DN. In addition, the luciferase activity of cells transfected with wild-type/mutant CD2AP confirmed CD2AP as a direct target of miR-182-5p. The expression levels of CD2AP mRNA and protein were much lower in the DN group compared with that in the normal group. In addition, the expression levels of CD2AP mRNA and protein were evidently increased by a miR-182-5p inhibitor, but notably downregulated by miR-182-5p mimics or CD2AP small interfering RNA (siRNA). Furthermore, miR-182-5p and CD2Ap siRNA significantly reduced the survival rate and viability of transfected cells, while the miR-182-5p inhibitor exhibited an opposite effect. These findings indicated the presence of a negative regulatory relationship between miR-182-5p and CD2AP in podocytes cells and suggested that the overexpression of miR-182-5p contributes to the pathogenesis of DN.
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Affiliation(s)
- Lei Ming
- Department of Image, Shandong Qianfoshan Hospital, Jinan, Shandong, China
| | - Jing Ning
- Nursing Department, Wucheng People's Hospital, Dezhou, Shandong, China
| | - Yuan Ge
- Department of Anesthesiology, Jinan Central Hospital, Jinan, Shandong, China
| | - Ying Zhang
- Department of Nephrology, Shandong Qianfoshan Hospital, Jinan, Shandong, China
| | - Zhen Ruan
- Department of Tumor Chemotherapy, Shandong Qianfoshan Hospital, Jinan, Shandong, China
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Denhez B, Rousseau M, Dancosst DA, Lizotte F, Guay A, Auger-Messier M, Côté AM, Geraldes P. Diabetes-Induced DUSP4 Reduction Promotes Podocyte Dysfunction and Progression of Diabetic Nephropathy. Diabetes 2019; 68:1026-1039. [PMID: 30862678 DOI: 10.2337/db18-0837] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 02/25/2019] [Indexed: 11/13/2022]
Abstract
Diabetic nephropathy (DN) remains the leading cause of end-stage renal disease. Hyperglycemia-induced podocyte dysfunction is a major contributor of renal function impairment in DN. Previous studies showed that activation of mitogen-activated protein kinase (MAPK) in diabetes promotes podocyte dysfunction and cell death. Dual specificity phosphatases (DUSPs) are a family of phosphatases mainly responsible for MAPK inhibition. In this study, we demonstrated that diabetes and high glucose exposure decreased DUSP4 expression in cultured podocytes and glomeruli. Diabetes-induced DUSP4 reduction enhanced p38 and c-Jun N-terminal kinase (JNK) activity and podocyte dysfunction. The overexpression of DUSP4 prevented the activation of p38, JNK, caspase 3/7 activity, and NADPH oxidase 4 expression induced by high glucose level exposure. Deletion of DUSP4 exacerbated albuminuria and increased mesangial expansion and glomerular fibrosis in diabetic mice. These morphological changes were associated with profound podocyte foot process effacement, cell death, and sustained p38 and JNK activation. Moreover, inhibition of protein kinase C-δ prevented DUSP4 expression decline and p38/JNK activation in the podocytes and renal cortex of diabetic mice. Analysis of DUSP4 expression in the renal cortex of patients with diabetes revealed that decreased DUSP4 mRNA expression correlated with reduced estimated glomerular filtration rate (<60 mL/min/1.73 m2). Thus, this study demonstrates that preserving DUSP4 expression could protect against podocyte dysfunction and preserve glomerular function in DN.
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Affiliation(s)
- Benoit Denhez
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Marina Rousseau
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | | | - Farah Lizotte
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Andréanne Guay
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Mannix Auger-Messier
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
- Division of Cardiology, Department of Medicine, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Anne Marie Côté
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
- Division of Nephrology, Department of Medicine, Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Pedro Geraldes
- Research Center of the CHU de Sherbrooke, Université de Sherbrooke, Sherbrooke, Québec, Canada
- Division of Endocrinology, Department of Medicine, Université de Sherbrooke, Sherbrooke, Québec, Canada
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Erianin protects against high glucose-induced oxidative injury in renal tubular epithelial cells. Food Chem Toxicol 2019; 126:97-105. [PMID: 30763685 DOI: 10.1016/j.fct.2019.02.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/17/2019] [Accepted: 02/08/2019] [Indexed: 01/02/2023]
Abstract
Erianin is the major bibenzyl compound found in Dendrobium chrysotoxum Lindl. The current study was designed to investigate the protective effects of erianin on high glucose-induced injury in cultured renal tubular epithelial cells (NRK-52E cells) and determine the possible mechanisms for its effects. NRK-52E cells were pretreated with erianin (5, 10, 25 or 50 nmol/L) for 1 h followed by further exposure to high glucose (30 mmol/L, HG) for 48 h. Erianin concentration dependently enhanced cell viability followed by HG treatment in NRK-52E cells. HG induced reactive oxygen species (ROS) generation, malondialdehyde production, and glutathione deficiency were recovered in NRK-52E cells pretreated with erianin. HG triggered cell apoptosis via the loss of mitochondrial membrane potential, depletion of adenosine triphosphate, upregulation of caspases 9 and 3, enhancement of cytochrome c release, and subsequent interruption of the Bax/Bcl-2 balance. These detrimental effects were ameliorated by erianin. HG also induced activation of p53, JNK, p38 mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) in NRK-52E cells, which were blocked by erianin. The results suggest that treatment NRK-52E cells with erianin halts HG-induced renal dysfunction through the suppression of the ROS/MAPK/NF-κB signaling pathways. Our findings provide novel therapeutic targets for diabetic nephropathy.
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Shin JH, Kim KM, Jeong JU, Shin JM, Kang JH, Bang K, Kim JH. Nrf2-Heme Oxygenase-1 Attenuates High-Glucose-Induced Epithelial-to-Mesenchymal Transition of Renal Tubule Cells by Inhibiting ROS-Mediated PI3K/Akt/GSK-3 β Signaling. J Diabetes Res 2019; 2019:2510105. [PMID: 31467925 PMCID: PMC6701369 DOI: 10.1155/2019/2510105] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/11/2019] [Accepted: 06/20/2019] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Epithelial-to-mesenchymal transition (EMT) is thought to play a significant role in the advancement to chronic kidney disease and contributes to the deposition of extracellular matrix proteins and renal fibrosis relating to diabetic nephropathy. METHOD We studied the effect of Nrf2-HO-1 signaling on high-glucose- (HG-) induced EMT in normal human tubular epithelial cells, that is, HK2 cells. In short, we treated HK2 cells with HG and sulforaphane (SFN) as an Nrf2 activator. EMT was evaluated by the expression activity of the epithelial marker E-cadherin and mesenchymal markers such as vimentin and fibronectin. RESULTS Exposure of HK2 cells to HG (60 mM) activated the expression of vimentin and fibronectin but decreased E-cadherin. Treatment of HK2 cells with SFN caused HG-induced attenuation in EMT markers with activated Nrf2-HO-1. We found that SFN decreased HG-induced production of reactive oxygen species (ROS), phosphorylation of PI3K/Akt at serine 473, and inhibitory phosphorylation of serine/threonine kinase glycogen synthase kinase-3β (GSK-3β) at serine 9. Subsequently, these signaling led to the downregulation of the Snail-1 transcriptional factor and the recovery of E-cadherin. CONCLUSION The present study suggests that Nrf2-HO-1 signaling has an inhibitory role in the regulation of EMT through the modulation of ROS-mediated PI3K/Akt/GSK-3β activity, highlighting Nrf2-HO-1 and GSK-3β as potential therapeutic targets in diabetic nephropathy.
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Affiliation(s)
- Jong Ho Shin
- Division of Nephrology, Eulji University College of Medicine, Daejeon, Republic of Korea
| | - Kyeong Min Kim
- Division of Nephrology, Eulji University College of Medicine, Daejeon, Republic of Korea
| | - Jin Uk Jeong
- Division of Nephrology, Eulji University College of Medicine, Daejeon, Republic of Korea
| | - Jae Min Shin
- Division of Pathology, Eulji University College of Medicine, Daejeon, Republic of Korea
| | - Ju Hyung Kang
- Division of Pediatrics, Eulji University College of Medicine, Daejeon, Republic of Korea
| | - Kitae Bang
- Division of Nephrology, Eulji University College of Medicine, Daejeon, Republic of Korea
| | - Joo-Heon Kim
- Division of Pathology, Eulji University College of Medicine, Daejeon, Republic of Korea
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Chen MF, Liou SS, Hong TY, Kao ST, Liu IM. Gigantol has Protective Effects against High Glucose-Evoked Nephrotoxicity in Mouse Glomerulus Mesangial Cells by Suppressing ROS/MAPK/NF-κB Signaling Pathways. Molecules 2018; 24:molecules24010080. [PMID: 30587838 PMCID: PMC6337535 DOI: 10.3390/molecules24010080] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/09/2018] [Accepted: 12/16/2018] [Indexed: 01/09/2023] Open
Abstract
Gigantol is a bibenzyl compound derived from several medicinal orchids. This biologically active compound has shown promising therapeutic potential against diabetic cataracts, but whether this compound exerts beneficial effects on the other diabetic microvascular complications remains unclear. This study was carried out to examine effects of gigantol on high glucose-induced renal cell injury in cultured mouse kidney mesangial cells (MES-13). MES-13 cells were pretreated with gigantol (1, 5, 10 or 20 μmol/L) for 1 h followed by further exposure to high (33.3 mmol/L) glucose for 48 h. Gigantol concentration dependently enhanced cell viability followed by high glucose treatment in MES-13 cells. High glucose induced reactive oxygen species (ROS) generation, malondialdehyde production and glutathione deficiency were recoved in MES-13 cells pretreated with gigantol. High glucose triggered cell apoptosis via the the loss of mitochondrial membrane potential, depletion of adenosine triphosphate, upregulation of caspases 9 and 3, enhancement of cytochrome c release, and subsequent interruption of the Bax/Bcl-2 balance. These detrimental effects were ameliorated by gigantol. High glucose also induced activation of JNK, p38 mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) in MES-13 cells, which were blocked by gigantol. The results suggest that treatment MES-13 cells with gigantol halts high glucose-induced renal dysfunction through the suppression of the ROS/MAPK/NF-κB signaling pathways. Our data are of value to the understanding the mechanism for gigantol, and would benefit the study of drug development or food supplement for diabetes and nephropathy.
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Affiliation(s)
- Mei-Fen Chen
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
- College of Nursing, Chung Hwa University of Medical Technology, Rende Dist, Tainan City 71703, Taiwan.
| | - Shorong-Shii Liou
- Department of Pharmacy and Master Program, Collage of Pharmacy and Health Care, Tajen University, Pingtung County 90741, Taiwan.
| | - Tang-Yao Hong
- Department of Biotechnology, Collage of Pharmacy and Health Care, Tajen University, Pingtung County 90741, Taiwan.
| | - Shung-Te Kao
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 40402, Taiwan.
- Department of Chinese Medicine, China Medical University Hospital, Taichung 40402, Taiwan.
| | - I-Min Liu
- Department of Pharmacy and Master Program, Collage of Pharmacy and Health Care, Tajen University, Pingtung County 90741, Taiwan.
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Yeo H, Yeo EJ, Shin MJ, Choi YJ, Lee CH, Kwon HY, Kim DW, Eum WS, Choi SY. Protective effects of Tat-DJ-1 protein against streptozotocin-induced diabetes in a mice model. BMB Rep 2018; 51:362-367. [PMID: 29936932 PMCID: PMC6089872 DOI: 10.5483/bmbrep.2018.51.7.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Indexed: 11/20/2022] Open
Abstract
A major feature of type 1 diabetes mellitus (T1DM) is hyperglycemia and dysfunction of pancreatic β-cells. In a previous study, we have shown that Tat-DJ-1 protein inhibits pancreatic RINm5F β-cell death caused by oxidative stress. In this study, we examined effects of Tat-DJ-1 protein on streptozotocin (STZ)-induced diabetic mice. Wild type (WT) Tat-DJ-1 protein transduced into pancreas where it markedly inhibited pancreatic β-cell destruction and regulated levels of serum parameters including insulin, alkaline phosphatase (ALP), and free fatty acid (FFA) secretion. In addition, transduced WT Tat-DJ-1 protein significantly inhibited the activation of NF-κB and MAPK (ERK and p38) expression as well as expression of COX-2 and iNOS in STZ exposed pancreas. In contrast, treatment with C106A mutant Tat-DJ-1 protein showed no protective effects. Collectively, our results indicate that WT Tat-DJ-1 protein can significantly ameliorate pancreatic tissues in STZ-induced diabetes in mice. [BMB Reports 2018; 51(7): 362-367].
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Affiliation(s)
- Hyeon Yeo
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Eun Ji Yeo
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Min Jea Shin
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Yeon Joo Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Chi Hern Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Hyeok Yil Kwon
- Department of Physiology, College of Medicine, Hallym University, Chuncheon 24252, Korea
| | - Dae Won Kim
- Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Gangneung-Wonju National University, Gangneung 25457, Korea
| | - Won Sik Eum
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
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Protective effect of ginsenoside metabolite compound K against diabetic nephropathy by inhibiting NLRP3 inflammasome activation and NF-κB/p38 signaling pathway in high-fat diet/streptozotocin-induced diabetic mice. Int Immunopharmacol 2018; 63:227-238. [DOI: 10.1016/j.intimp.2018.07.027] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 07/01/2018] [Accepted: 07/24/2018] [Indexed: 12/21/2022]
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40
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Therapeutic potential of curcumin in diabetic complications. Pharmacol Res 2018; 136:181-193. [DOI: 10.1016/j.phrs.2018.09.012] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/19/2018] [Indexed: 12/22/2022]
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41
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Dewanjee S, Bhattacharjee N. MicroRNA: A new generation therapeutic target in diabetic nephropathy. Biochem Pharmacol 2018; 155:32-47. [DOI: 10.1016/j.bcp.2018.06.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 06/20/2018] [Indexed: 12/11/2022]
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Liles JT, Corkey BK, Notte GT, Budas GR, Lansdon EB, Hinojosa-Kirschenbaum F, Badal SS, Lee M, Schultz BE, Wise S, Pendem S, Graupe M, Castonguay L, Koch KA, Wong MH, Papalia GA, French DM, Sullivan T, Huntzicker EG, Ma FY, Nikolic-Paterson DJ, Altuhaifi T, Yang H, Fogo AB, Breckenridge DG. ASK1 contributes to fibrosis and dysfunction in models of kidney disease. J Clin Invest 2018; 128:4485-4500. [PMID: 30024858 DOI: 10.1172/jci99768] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 07/13/2018] [Indexed: 12/14/2022] Open
Abstract
Oxidative stress is an underlying component of acute and chronic kidney disease. Apoptosis signal-regulating kinase 1 (ASK1) is a widely expressed redox-sensitive serine threonine kinase that activates p38 and c-Jun N-terminal kinase (JNK) mitogen-activated protein kinase kinases, and induces apoptotic, inflammatory, and fibrotic signaling in settings of oxidative stress. We describe the discovery and characterization of a potent and selective small-molecule inhibitor of ASK1, GS-444217, and demonstrate the therapeutic potential of ASK1 inhibition to reduce kidney injury and fibrosis. Activation of the ASK1 pathway in glomerular and tubular compartments was confirmed in renal biopsies from patients with diabetic kidney disease (DKD) and was decreased by GS-444217 in several rodent models of kidney injury and fibrosis that collectively represented the hallmarks of DKD pathology. Treatment with GS-444217 reduced progressive inflammation and fibrosis in the kidney and halted glomerular filtration rate decline. Combination of GS-444217 with enalapril, an angiotensin-converting enzyme inhibitor, led to a greater reduction in proteinuria and regression of glomerulosclerosis. These results identify ASK1 as an important target for renal disease and support the clinical development of an ASK1 inhibitor for the treatment of DKD.
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Affiliation(s)
| | | | | | | | | | | | | | - Michael Lee
- Gilead Sciences, Foster City, California, USA
| | | | - Sarah Wise
- Gilead Sciences, Foster City, California, USA
| | | | | | | | - Keith A Koch
- Consortium for Fibrosis Research and Translation, University of Colorado Anschutz Medical Campus, Denver, Colorado, USA
| | | | | | | | | | | | - Frank Y Ma
- Department of Nephrology and Monash University Centres for Inflammatory Diseases, Monash Medical Centre, Clayton, Victoria, Australia
| | - David J Nikolic-Paterson
- Department of Nephrology and Monash University Centres for Inflammatory Diseases, Monash Medical Centre, Clayton, Victoria, Australia
| | - Tareq Altuhaifi
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Haichun Yang
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Agnes B Fogo
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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Song G, Han P, Sun H, Shao M, Yu X, Wang W, Wang D, Yi W, Ge N, Li S, Yi T. Astragaloside IV ameliorates early diabetic nephropathy by inhibition of MEK1/2-ERK1/2-RSK2 signaling in streptozotocin-induced diabetic mice. J Int Med Res 2018; 46:2883-2897. [PMID: 29896981 PMCID: PMC6124299 DOI: 10.1177/0300060518778711] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Objective The aim of this study was to investigate the renoprotective effects and molecular mechanisms of astragaloside IV (AS-IV) in streptozotocin (STZ)-induced diabetic mice. Methods Male C57BL/6 mice were injected intraperitoneally with STZ at 200 mg/kg body weight. AS-IV was administered for 8 consecutive weeks, beginning 1 week after STZ injection. Body weight, 24-hour urinary albumin excretion, and fasting blood glucose were measured. Kidney tissues were examined by histopathological analyses. Total levels and phosphorylation of mitogen-activated protein kinase 1/2 (MEK1/2), extracellular signal-regulated kinases 1 and 2 (ERK1/2), and ribosomal S6 kinase 2 (RSK2) were determined by Western blotting analysis. Results AS-IV treatment significantly reduced albuminuria and serum creatinine levels, ameliorated mesangial matrix expansion and greater foot process width, and decreased the levels of urinary N-acetyl-beta-D-glucosaminidase, neutrophil gelatinase-associated lipocalin, and transforming growth factor-beta 1 in STZ-induced diabetic mice. AS-IV also inhibited renal cortical phosphorylation of MEK1/2, ERK1/2 and RSK2. Conclusion Our results suggest that AS-IV attenuates renal injury in STZ-induced diabetic mice. This effect might be partially associated with inhibition of the activation of the MEK1/2-ERK1/2-RSK2 signaling pathway.
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Affiliation(s)
- Gaofeng Song
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Pengxun Han
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Huili Sun
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Mumin Shao
- 2 Department of Pathology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Xuewen Yu
- 2 Department of Pathology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Wenjing Wang
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Dongtao Wang
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Wuyong Yi
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Na Ge
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Shunmin Li
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Tiegang Yi
- 1 Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
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Renoprotective Effect of Danhong Injection on Streptozotocin-Induced Diabetic Rats through a Peroxisome Proliferator-Activated Receptor γ Mediated Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:3450141. [PMID: 29849705 PMCID: PMC5925177 DOI: 10.1155/2018/3450141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 12/10/2017] [Accepted: 01/11/2018] [Indexed: 01/13/2023]
Abstract
The aim of the study was to investigate the protective effect of Danhong injection (DHI) on diabetic kidney disease and explore the potential mechanisms. Diabetic kidney disease was induced by unilateral nephrectomy, high-fat diet, and streptozotocin. After DHI administration, the renal function deterioration, 24-hour total urine protein excretion, and elevated serum lipid levels were reversed to some extent, and the renal pathological damage was also ameliorated. The KEGG pathway enrichment analysis demonstrated that the PPARγ signal pathway was significantly upregulated in DH group. And the increased expressions of PPARγ and UCP-1 were confirmed by immunohistochemistry, whereas the p38MAPK was significantly decreased. These data show that DHI could delay the progress of DKD, and the effect might be achieved in part by activating the PPARγ signaling pathway.
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Wei J, Wu H, Zhang H, Li F, Chen S, Hou B, Shi Y, Zhao L, Duan H. Anthocyanins inhibit high glucose-induced renal tubular cell apoptosis caused by oxidative stress in db/db mice. Int J Mol Med 2018; 41:1608-1618. [PMID: 29328429 PMCID: PMC5819916 DOI: 10.3892/ijmm.2018.3378] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 01/04/2018] [Indexed: 01/09/2023] Open
Abstract
Oxidative stress is an important contributory factor resulting the development of kidney injury in patients with diabetes. Numerous in vitro and in vivo studies have suggested that anthocyanins, natural phenols commonly existing in numerous fruits and vegetables, exhibit important antioxidative, anti‑inflammatory and antihyperlipidemic effects; however, their effects and underlying mechanisms on diabetic nephropathy (DN) have not yet been fully determined. In the present study, the regulation of apoptosis metabolism and antioxidative effects exhibited by anthocyanins [grape seed procyanidin (GSPE) and cyanidin‑3‑O‑β‑glucoside chloride (C3G)] were investigated, and the molecular mechanism underlying this process was investigated in vivo and in vitro. GSPE administration was revealed to suppress renal cell apoptosis, as well as suppress the expression of Bcl‑2 in diabetic mouse kidneys. Furthermore, GSPE administration was demonstrated to suppress the expression of thioredoxin interacting protein (TXNIP), in addition to enhancing p38 mitogen‑activation protein kinase (MAPK) and extracellular signal‑regulated kinase 1/2 (ERK1/2) oxidase activity in diabetic mouse kidneys. In vitro experiments using HK‑2 cells revealed that C3G suppressed the generation of HG‑mediated reactive oxygen species, cellular apoptosis, the expression of cleaved caspase‑3 and the Bax/Bcl‑2 ratio; and enhanced the expression of cytochrome c released from mitochondria. Furthermore, treatment with C3G was revealed to suppress the expression of TXNIP, in addition to the phosphorylation of p38 MAPK and ERK1/2 oxidase activity in HK‑2 cells under HG conditions. In addition, treatment with C3G was revealed to attenuate the HG‑induced suppression of the biological activity of thioredoxin, and to enhance the expression of thioredoxin 2 in HK‑2 cells under HG conditions. In conclusion, the present study demonstrated that anthocyanins may exhibit protective effects against HG‑induced renal injury in DN via antioxidant activity.
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Affiliation(s)
- Jinying Wei
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Haijiang Wu
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Haiqiang Zhang
- Department of Gastrointestinal Surgery Hernia and Abdominal Wall Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000
| | - Fang Li
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Shurui Chen
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Baohua Hou
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Yonghong Shi
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Lijuan Zhao
- School of Public Health, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Huijun Duan
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
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Ma Y, Chen F, Yang S, Chen B, Shi J. Protocatechuic acid ameliorates high glucose-induced extracellular matrix accumulation in diabetic nephropathy. Biomed Pharmacother 2018; 98:18-22. [DOI: 10.1016/j.biopha.2017.12.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 11/29/2017] [Accepted: 12/07/2017] [Indexed: 11/25/2022] Open
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Kamikawa Y, Sakai N, Miyake T, Sagara A, Shinozaki Y, Kitajima S, Toyama T, Hara A, Iwata Y, Shimizu M, Furuichi K, Imamura R, Suda T, Kaneko S, Wada T. Involvement of p38MAPK in Impaired Neutrophil Bactericidal Activity of Hemodialysis Patients. Ther Apher Dial 2018; 22:345-354. [PMID: 29318737 DOI: 10.1111/1744-9987.12651] [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: 07/16/2017] [Revised: 10/17/2017] [Accepted: 10/17/2017] [Indexed: 01/08/2023]
Abstract
Mortality from infections has been reported to be higher in hemodialysis (HD) patients. Although dysfunction of neutrophils against bacterial infection was reported in HD patients, the precise mechanism remains to be clarified. We therefore examined the impacts of neutrophil inflammatory signaling on bactericidal activity in HD patients. Comprehensive analyses of intracellular signalings were performed in whole blood of HD patients and control using a microarray system. To confirm the contribution of the signaling to bactericidal activity in neutrophils, we examined the phosphorylation, bacterial killing function, reactive oxygen species (ROS) production, and myeloperoxidase (MPO) release in neutrophils against Staphylococcus aureus. RNA microarray analysis showed the suppression of p38 mitogen activated protein kinase (MAPK) signaling in HD patients. Neutrophils in HD patients showed the impairment of bactericidal activity against S. aureus compared to healthy subjects. Phosphorylation rate of p38MAPK of neutrophils in response to S. aureus was lower in HD patients than healthy subjects. The levels of ROS produced by neutrophils after co-culture with S. aureus were lower in HD patients, on the other hand, there was no difference of MPO release between HD patients and healthy subjects. A selective pharmacological inhibitor of p38MAPK suppressed bacterial killing function as well as ROS production in neutrophils of healthy subjects. Impairment of p38MAPK signaling pathway might contribute to the suppression of neutrophil bactericidal activity in HD patients through less production of ROS.
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Affiliation(s)
- Yasutaka Kamikawa
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Norihiko Sakai
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan.,Division of Blood Purification, Kanazawa University Hospital, Kanazawa, Japan
| | - Taito Miyake
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Akihiro Sagara
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | | | - Shinji Kitajima
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tadashi Toyama
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Akinori Hara
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Yasunori Iwata
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Miho Shimizu
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kengo Furuichi
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan.,Division of Blood Purification, Kanazawa University Hospital, Kanazawa, Japan
| | - Ryu Imamura
- Division of Tumor Dynamics and Regulation, Kanazawa University, Kanazawa, Japan
| | - Takashi Suda
- Division of Immunology and Molecular Biology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of System Biology, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Takashi Wada
- Division of Nephrology, Kanazawa University Hospital, Kanazawa, Japan.,Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
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48
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Su N, Xiao C, Wei Y, Kou Q, Jiang Z. The role of ERK and Smad2 signal pathways in the alternatively activated macrophages induced by TGF-β1 and high-ambient glucose. J Recept Signal Transduct Res 2017; 38:27-30. [PMID: 29199516 DOI: 10.1080/10799893.2017.1407340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Macrophages can be alternatively activated by TGF-β1 and high-ambient glucose, in which the role of Smad2 and the crosstalk between ERK and Smad2 pathways are not fully understood. The activation of ERK and Smad2 pathways and the expression of arginase-1 were detected by Western blot. The role of Smad2 and the relationship between ERK and Smad2 pathways were investigated by using biochemical inhibitors. The protein of arginase-1 was significantly overexpressed in RAW264.7 cells stimulated by TGF-β1 and high-ambient glucose, which can be partially blocked by not only U0126 (ERK inhibitor) but also SB431542 (Smad2 inhibitor). Furthermore, simply inhibiting one pathway had no effect on the other pathway. In conclusion, both ERK and Smad2 signal pathways are involved in the activation of macrophages induced by TGF-β1 and high-ambient glucose, while there is no crosstalk shown in the process.
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Affiliation(s)
- Ning Su
- a Department of Nephrology , the Six Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Chaoxing Xiao
- a Department of Nephrology , the Six Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Yi Wei
- a Department of Nephrology , the Six Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Qiuye Kou
- a Department of Nephrology , the Six Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
| | - Zongpei Jiang
- a Department of Nephrology , the Six Affiliated Hospital of Sun Yat-sen University , Guangzhou , China
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49
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Chen P, Yuan Y, Zhang T, Xu B, Gao Q, Guan T. Pentosan polysulfate ameliorates apoptosis and inflammation by suppressing activation of the p38 MAPK pathway in high glucose‑treated HK‑2 cells. Int J Mol Med 2017; 41:908-914. [PMID: 29207166 PMCID: PMC5752165 DOI: 10.3892/ijmm.2017.3290] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 11/20/2017] [Indexed: 01/26/2023] Open
Abstract
The apoptosis of tubular epithelial cells in diabetic nephropathy (DN) is commonly observed in human renal biopsies. Inflammation plays a key role in DN, and pentosan polysulfate (PPS) has been shown to largely attenuate the inflammation of nephropathy in aging diabetic mice. p38 mitogen-activated protein kinase (p38 MAPK) plays a crucial role in tissue inflammation and cell apoptosis, and it is activated by hyperglycemia. In the present study, high glucose (HG)-treated human renal proximal tubular epithelial cells (HK-2) were used to examine the protective effects of PPS against HG-stimulated apoptosis and inflammation. The results of the study revealed that PPS markedly suppressed the HG-induced reduction in cell viability. Incubation of HK-2 cells with HG activated the p38 MAPK pathway and, subsequently, as confirmed by western blot analysis and flow cytometry, increased cell apoptosis, which was blocked by PPS. In addition, PPS treatment significantly inhibited HG-stimulated p38 MAPK and nuclear factor-κB activation, and reduced the production of pro-inflammatory cytokines, such as tumor necrosis factor-α, interleukin (IL)-1β and IL-6. In conclusion, PPS ameliorates p38 MAPK-mediated renal cell apoptosis and inflammation. The anti-apoptotic actions and anti-inflammatory effects of PPS prompt further investigation of this compound as a promising therapeutic agent against DN.
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Affiliation(s)
- Ping Chen
- Department of Nephrology, Ningbo First Hospital, Ningbo, Zhejiang 315010, P.R. China
| | - Yang Yuan
- Department of Nephrology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, P.R. China
| | - Tianying Zhang
- Department of Nephrology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, P.R. China
| | - Bo Xu
- Department of Nephrology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, P.R. China
| | - Qing Gao
- Department of Nephrology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, P.R. China
| | - Tianjun Guan
- Department of Nephrology, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, P.R. China
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50
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Suryavanshi SV, Kulkarni YA. NF-κβ: A Potential Target in the Management of Vascular Complications of Diabetes. Front Pharmacol 2017; 8:798. [PMID: 29163178 PMCID: PMC5681994 DOI: 10.3389/fphar.2017.00798] [Citation(s) in RCA: 218] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 10/23/2017] [Indexed: 01/01/2023] Open
Abstract
Diabetes is a metabolic disorder affecting large percentage of population worldwide. NF-κβ plays key role in pathogenesis of vascular complications of diabetes. Persistent hyperglycemia activates NF-κβ that triggers expression of various cytokines, chemokines and cell adhesion molecules. Over-expression of TNF-α, interleukins, TGF-β, Bcl2 and other pro-inflammatory proteins and pro-apoptotic genes by NF-κβ is key risk factor in vascular dysfunction. NF-κβ over-expression also triggers calcification of endothelial cells leading to endothelial dysfunction and further vascular complications. Inhibition of NF-κβ pro-inflammatory pathway is upcoming novel target for management of vascular complications of diabetes. Various natural and synthetic inhibitors of NF-κβ have been studied in management of diabetic complications. Recent preclinical and clinical studies validate NF-κβ as promising target in the management of vascular complications of diabetes.
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Affiliation(s)
- Sachin V Suryavanshi
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's Narsee Monjee Institute of Management Studies, Mumbai, India
| | - Yogesh A Kulkarni
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's Narsee Monjee Institute of Management Studies, Mumbai, India
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