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Sun J, Du Q, Zhao L, Huang J, Yu H, Ding H, Mao D, Tai S. Long non-coding RNA H19 mediates the miR-29b/transforming growth factor-β1/Drosophila mothers against decapentaplegic 3 signalling pathway to promote bladder fibrosis in diabetic rats. Int Urol Nephrol 2024; 56:2779-2791. [PMID: 38530583 DOI: 10.1007/s11255-024-03992-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/10/2024] [Indexed: 03/28/2024]
Abstract
PURPOSE Diabetic bladder fibrosis is a common comorbidity. Altered expression of some long non-coding RNAs (LncRNAs) has been associated with bladder fibrosis. LncRNA H19 has been reported to regulate bladder cancer through miR-29b. However, the action mechanism of LncRNA H19 in bladder fibrosis is unclear. METHODS In vitro, human bladder smooth muscle cells (HBSMCs) were cultured with transforming growth factor-β1 (TGF-β1) for 48 h to construct cell model of bladder fibrosis. HBSMCs were then transfected with si-LncRNA H19, si-NC, miR-29b-mimic, mimic-NC, or miR-29b-inhibitor. In vivo, Sprague-Dawley (SD) rats were given a high-sucrose-high-fat (HSHF) diet for 4 weeks and injected with streptozotocin (STZ, 50 mg/kg) to induce bladder fibrosis model in diabetic rats, followed by injection of lentiviral particles knocking down LncRNA H19 expression, empty vector, or miR-29b-inhibitor, respectively. RESULTS LncRNA H19 was up-regulated in TGF-β1-induced HBSMC fibrosis and STZ-induced diabetic rat bladder fibrosis, whereas miR-29b was down-regulated. si-LncRNA H19 reduced blood glucose levels and improved histopathological damage of bladder tissue in rats. In addition, si-LncRNA H19 or miR-29b-mimic increased the expression of E-cadherin, but decreased the expression of N-cadherin, vimentin, fibronectin (FN) in bladder tissues, and HBSMCs. si-LncRNA H19 reduced TGF-β1/p-drosophila mothers against decapentaplegic 3 (Smad3) protein in HBSMCs and in rat bladder tissues, while miR-29b-inhibitor reversed the effect of si-LncRNA H19. CONCLUSION This study indicated that LncRNA H19 may inhibit bladder fibrosis in diabetic rats by targeting miR-29b via the TGF-β1/Smad3 signalling pathway.
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Affiliation(s)
- Ji Sun
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China
| | - Qiang Du
- Department of Anaesthesiology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, Hangzhou, 311202, Zhejiang, China
| | - Liwei Zhao
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China
| | - Jiaguo Huang
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China
| | - Hui Yu
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China
| | - Hongxiang Ding
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China
| | - Dikai Mao
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China
| | - Shengcheng Tai
- Department of Urology, Affiliated Xiaoshan Hospital, Hangzhou Normal University, No. 728 North Yucai Road, Xiaoshan District, Hangzhou, 311202, Zhejiang, China.
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Liang L, He M, Zhou P, Pan S, Chen J, Lv L, Hu M, Zhou S, Liu D, Liu Z. c-Cbl induced podocin ubiquitination contributes to the podocytes injury in diabetic nephropathy. FASEB J 2024; 38:e23662. [PMID: 38752545 DOI: 10.1096/fj.202400356r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/05/2024] [Accepted: 04/29/2024] [Indexed: 07/16/2024]
Abstract
The ubiquitination function in diabetic nephropathy (DN) has attracted much attention, but there is a lack of information on its ubiquitylome profile. To examine the differences in protein content and ubiquitination in the kidney between db/db mice and db/m mice, we deployed liquid chromatography-mass spectrometry (LC-MS/MS) to conduct analysis. We determined 145 sites in 86 upregulated modified proteins and 66 sites in 49 downregulated modified proteins at the ubiquitinated level. Moreover, 347 sites among the 319 modified proteins were present only in the db/db mouse kidneys, while 213 sites among the 199 modified proteins were present only in the db/m mouse kidneys. The subcellular localization study indicated that the cytoplasm had the highest proportion of ubiquitinated proteins (31.87%), followed by the nucleus (30.24%) and the plasma membrane (20.33%). The enrichment analysis revealed that the ubiquitinated proteins are mostly linked to tight junctions, oxidative phosphorylation, and thermogenesis. Podocin, as a typical protein of slit diaphragm, whose loss is a crucial cause of proteinuria in DN. Consistent with the results of ubiquitination omics, the K261R mutant of podocin induced the weakest ubiquitination compared with the K301R and K370R mutants. As an E3 ligase, c-Cbl binds to podocin, and the regulation of c-Cbl can impact the ubiquitination of podocin. In conclusion, in DN, podocin ubiquitination contributes to podocyte injury, and K261R is the most significant site. c-Cbl participates in podocin ubiquitination and may be a direct target for preserving the integrity of the slit diaphragm structure, hence reducing proteinuria in DN.
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Affiliation(s)
- Lulu Liang
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mengfei He
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Panpan Zhou
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Shaokang Pan
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jingfang Chen
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Linxiao Lv
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mingyang Hu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Sijie Zhou
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Dongwei Liu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Zhangsuo Liu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Research Institute of Nephrology, Zhengzhou University, Zhengzhou, China
- Henan Province Research Center For Kidney Disease, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
- Key Laboratory of Precision Diagnosis and Treatment for Chronic Kidney Disease in Henan Province, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Wang P, Fan S, Hu X, Luo L, Ying J, Li J. MG132, Attenuates the Retinal Vascular Injury Through the Upregulation of Nrf2 Expression. J Ocul Pharmacol Ther 2023; 39:661-671. [PMID: 37729070 DOI: 10.1089/jop.2023.0053] [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] [Indexed: 09/22/2023] Open
Abstract
Purpose: This study clarifies the beneficial effects of MG132, a proteasomal inhibitor, on retinal vascular injury mediated by diabetes-induced oxidative stress through nuclear factor erythroid 2-related factor 2 (Nrf2). Methods: Diabetic rats and control animals were randomly assigned to receive MG132 or vehicle for 24 weeks, and human retinal endothelial cells (HRECs) were incubated with normal or high glucose with or without MG132. 26S proteasome activity in the rat retinas or cultured HRECs was measured using Suc-LLVY-7-amido-4-methylcoumarin. NADPH-quinone oxidoreduc-tase (NQO1), heme oxygenase (HO)-1, kelch-like ECH-associated protein 1 (Keap1) and Nrf2 were examined by Western blotting and real-time reverse transcription polymerase chain reaction. Cell apoptosis is measured through flow cytometry assay, mitochondrial reactive oxygen species (ROS) production, and retinal vascular leakage were assayed using CM-H2DCFDA fluorescent probes and Evans blue, respectively. Results: MG132 significantly inhibited the activation of 26S proteasome induced by diabetes or elevated glucose, and subsequently increased the expression of Nrf2, NQO1, and HO-1, and further reduced ROS accumulation. These changes were associated with a decrease of diabetes-induced retinal vascular leakage and retinal capillary cell apoptosis. Conclusions: MG132 decreases diabetes-induced 26S proteasome activation and exerts protective effects against retinal microvascular dysfunction in diabetic rats in association with the alleviation of retinal oxidative stress mediated by Nrf2.
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Affiliation(s)
- Peipei Wang
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, P.R. China
- Department of Stomatology, Lishui Hospital, Zhejiang University School of Medicine, Lishui, P.R. China
| | - Shipei Fan
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, P.R. China
- Department of Ophthalmology, Lishui Hospital, Zhejiang University School of Medicine, Lishui, P.R. China
| | - Xin Hu
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, P.R. China
- Department of Ophthalmology, Lishui Hospital, Zhejiang University School of Medicine, Lishui, P.R. China
| | - Li Luo
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, P.R. China
- Department of Ophthalmology, Lishui Hospital, Zhejiang University School of Medicine, Lishui, P.R. China
| | - Jia Ying
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, P.R. China
- Department of Ophthalmology, Lishui Hospital, Zhejiang University School of Medicine, Lishui, P.R. China
| | - Jun Li
- Department of Ophthalmology, Lishui Municipal Central Hospital, The Fifth Affiliated Hospital of Wenzhou Medical University, Lishui, P.R. China
- Department of Ophthalmology, Lishui Hospital, Zhejiang University School of Medicine, Lishui, P.R. China
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Svikle Z, Peterfelde B, Sjakste N, Baumane K, Verkauskiene R, Jeng CJ, Sokolovska J. Ubiquitin-proteasome system in diabetic retinopathy. PeerJ 2022; 10:e13715. [PMID: 35873915 PMCID: PMC9306563 DOI: 10.7717/peerj.13715] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 06/21/2022] [Indexed: 01/22/2023] Open
Abstract
Diabetic retinopathy (DR) is the most common complication of diabetes, being the most prevalent reason for blindness among the working-age population in the developed world. Despite constant improvement of understanding of the pathogenesis of DR, identification of novel biomarkers of DR is needed for improvement of patient risk stratification and development of novel prevention and therapeutic approaches. The ubiquitin-proteasome system (UPS) is the primary protein quality control system responsible for recognizing and degrading of damaged proteins. This review aims to summarize literature data on modifications of UPS in diabetes and DR. First, we briefly review the structure and functions of UPS in physiological conditions. We then describe how UPS is involved in the development and progression of diabetes and touch upon the association of UPS genetic factors with diabetes and its complications. Further, we focused on the effect of diabetes-induced hyperglycemia, oxidative stress and hypoxia on UPS functioning, with examples of studies on DR. In other sections, we discussed the association of several other mechanisms of DR (endoplasmic reticulum stress, neurodegeneration etc) with UPS modifications. Finally, UPS-affecting drugs and remedies are reviewed. This review highlights UPS as a promising target for the development of therapies for DR prevention and treatment and identifies gaps in existing knowledge and possible future study directions.
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Affiliation(s)
- Zane Svikle
- Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Beate Peterfelde
- Faculty of Medicine, University of Latvia, Riga, Latvia,Ophthalmology Department, Riga East University Hospital, Riga, Latvia
| | | | - Kristine Baumane
- Faculty of Medicine, University of Latvia, Riga, Latvia,Ophthalmology Department, Riga East University Hospital, Riga, Latvia
| | - Rasa Verkauskiene
- Institute of Endocrinology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Chi-Juei Jeng
- Ophthalmology Department, Taipei Medical University Shuang Ho Hospital, Ministry of Health and Welfare, Taipei, The Republic of China (Taiwan),College of Medicine, Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan
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Sun XH, Xiao HM, Zhang M, Lin ZY, Yang Y, Chen R, Liu PQ, Huang KP, Huang HQ. USP9X deubiquitinates connexin43 to prevent high glucose-induced epithelial-to-mesenchymal transition in NRK-52E cells. Biochem Pharmacol 2021; 188:114562. [PMID: 33857489 DOI: 10.1016/j.bcp.2021.114562] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 01/24/2023]
Abstract
Epithelial-to-mesenchymal transition (EMT) plays an important role in diabetic nephropathy (DN). Ubiquitin-specific protease 9X (USP9X/FAM) is closely linked to TGF-β and fibrosis signaling pathway. However, it remains unknown whether USP9X is involved in the process of EMT in DN. Our previous study has shown that connexin 43 (Cx43) activation attenuated the development of diabetic renal tubulointerstitial fibrosis (RIF). Here, we showed that USP9X is a novel negative regulator of EMT and the potential mechanism is related to the deubiquitination and degradation of Cx43. To explore the potential regulatory mechanism of USP9X, the expression and activity of USP9X were studied by CRISPR/Cas9-based synergistic activation mediator (SAM) system, short hairpin RNAs, and selective inhibitor. The following findings were observed: (1) Expression of USP9X was down-regulated in the kidney tissue of db/db diabetic mice; (2) overexpression of USP9X suppressed high glucose (HG)-induced expressions of EMT markers and extra cellular matrix (ECM) in NRK-52E cells; (3) depletion of USP9X further aggravated EMT process and ECM production in NRK-52E cells; (4) USP9X deubiquitinated Cx43 and suppressed its degradation to regulate EMT process; (5) USP9X deubiquitinated Cx43 by directly binding to the C-terminal Tyr286 of Cx43. The current study determined the protective role of USP9X in the process of EMT and the molecular mechanism clarified that the protective effects of USP9X on DN were associated with the deubiquitination of Cx43.
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Affiliation(s)
- Xiao-Hong Sun
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Hai-Ming Xiao
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Meng Zhang
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Ze-Yuan Lin
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yan Yang
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Rui Chen
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Pei-Qing Liu
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Kai-Peng Huang
- Phase I Clinical Trial Center, Guangzhou Eighth People's Hospital, Guangzhou Medical University, Guangzhou 510060, China.
| | - He-Qing Huang
- Laboratory of Pharmacology & Toxicology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of New Drug Design and Evaluation, Sun Yat-sen University, Guangzhou 510006, China.
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Wang C, Qin H, Zhao C, Yang L, Yu T, Zhang Y, Luo X, Qin Q, Liu S. Whole-Genome Re-sequencing and Transcriptome Reveal Oogenesis-Related Genes in Autotetraploid Carassius auratus. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2021; 23:233-241. [PMID: 33675430 DOI: 10.1007/s10126-021-10018-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 01/05/2021] [Indexed: 06/12/2023]
Abstract
Oogenesis involves a series of biochemical and physiological transformations and numerous regulated genes. The autotetraploid Carassius auratus (4nRR) originated from whole-genome duplication of Carassius auratus red var. (RCC), which produces diploid eggs through pairing of diploid-like chromosome during female meiosis. To explore the molecular mechanisms underlying oogenesis in 4nRR, we used the Illumina sequencing platform to characterize the ovaries of 4nRR and RCC. Transcriptome and whole-genome re-sequencing were performed to uncover the key genes and potential genetic mutations related to oogenesis. Each sample produced paired-end reads in the range of 66.97 to 98.36 million via Illumina HiSeq™ 2500. After comparing of the transcriptome profiles between the 4nRR and RCC, we uncovered 8562 differentially expressed genes (DEGs). The DEGs were enriched in oogenesis-related processes, including oogenesis, oocyte development, ubiquitin-mediated proteolysis, the signaling pathways of MAPK and calcium, and oocyte meiosis as investigated by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Additionally, whole-genome re-sequencing revealed 34,058,834 SNPs and 6,153,711 InDels, including 6,677,638 non-synonymous variations (SNPs) and 706,210 frame-shift InDels in the 8510 DEGs of 4nRR fish. Subsequently, whole-genome re-sequencing and transcriptomatic analyses revealed the genes that participate in oogenesis associated processes. Specifically, genes involved in ubiquitin-mediated proteolysis (SMURF1, UBE2I), calcium transport (CALM3, CAMK4), and meiosis (MAPK3, GRB2, CPEB1, CCNB2, YWHAE) were related to oogenesis in 4nRR. These findings enrich our understanding of oogenesis in the autopolyploid fish.
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Affiliation(s)
- Chongqing Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Huan Qin
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Chun Zhao
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Li Yang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Tingting Yu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Yuxin Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Xiang Luo
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China
| | - Qinbo Qin
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China.
| | - Shaojun Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Engineering Research Center of Polyploid Fish Reproduction and Breeding of the State Education Ministry, College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, People's Republic of China.
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FBW7 Regulates the Autophagy Signal in Mesangial Cells Induced by High Glucose. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6061594. [PMID: 31119177 PMCID: PMC6500712 DOI: 10.1155/2019/6061594] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 04/09/2019] [Indexed: 12/28/2022]
Abstract
Aims Abnormal regulation of autophagy participates in the development of diabetic nephropathy. mTOR is the most common negative regulator of the autophagy signaling pathway. FBW7 constitutes the SCF (Skp1-Cullin1-F-box protein) recognition subunit of E3 ubiquitin ligase, and mTOR is a substrate of FBW7 that can be modified by ubiquitination and be degraded via proteasomes. In this study, we explored the relationship between FBW7 and autophagy and examined the effects of FBW7 on the occurrence of diabetic nephropathy in vitro. Materials and Methods We cultured mesangial cells induced by high glucose in vitro and used rapamycin as a specific mTOR inhibitor, performed FBW7 gene overexpression, and detected the expression of autophagy signal and inflammatory factors by WB, ELISA, RT-PCR, and immunofluorescence. Results High glucose can downregulate the expression of FBW7 and activate mTOR signal, which leads to diminished autophagy in renal mesangial cells, as well as renal inflammatory cytokines and fibrotic factors. RAPA, as a specifically inhibitor of mTOR, can decrease inflammatory cytokines and fibrotic factors by inhibiting mTOR. Moreover, FBW7 gene overexpression can increase autophagy by inhibiting mTOR signal; at the same time, the inflammatory cytokines and fibrotic factors were decreased in mesangial cells. Conclusions FBW7 was decreased in renal mesangial cells induced by high glucose, and FBW7 gene overexpression can increase autophagy by inhibiting mTOR signaling and ameliorate inflammation and fibrosis.
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Chen L, Yang T, Lu DW, Zhao H, Feng YL, Chen H, Chen DQ, Vaziri ND, Zhao YY. Central role of dysregulation of TGF-β/Smad in CKD progression and potential targets of its treatment. Biomed Pharmacother 2018. [DOI: 10.1016/j.biopha.2018.02.090] [Citation(s) in RCA: 236] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Huang Y, Sun Y, Cao Y, Sun H, Li M, You H, Su D, Li Y, Liang X. HRD1 prevents apoptosis in renal tubular epithelial cells by mediating eIF2α ubiquitylation and degradation. Cell Death Dis 2017; 8:3202. [PMID: 29233968 PMCID: PMC5870601 DOI: 10.1038/s41419-017-0002-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 09/09/2017] [Accepted: 09/21/2017] [Indexed: 12/30/2022]
Abstract
Apoptosis of renal tubular epithelial cells is a key feature of the pathogenicity associated with tubulointerstitial fibrosis and other kidney diseases. One factor that regulates important cellular processes like apoptosis and cell proliferation is HRD1, an E3 ubiquitin ligase that acts by promoting ubiquitylation and degradation of its target protein. However, the detailed mechanisms by which HRD1 acts as a regulator of apoptosis in renal tubular epithelial cells have not been established. In our previous liquid chromatography-tandem mass spectrometry (LC-MS/MS) study (Mol Endocrinol. 2016;30:600–613), we demonstrated that one substrate of HRD1 was eIF2α, a critical protein in the PERK-eIF2α-ATF4-CHOP signaling pathway of endoplasmic reticulum (ER) stress. Here, we show that eIF2α expression was increased and HRD1 expression decreased when apoptosis was induced in HKC-8 cells by palmitic acid (PA) or high glucose (HG). HRD1 expression was also lower in kidney tissues from mice with diabetic nephropathy (DN) than in control mice. Forced expression of HRD1 also inhibited apoptosis in HKC-8 cells, while HRD1 overexpression decreased the expression of phosphorylated eIF2α and eIF2α. Further analysis indicated that HRD1 interacted with eIF2α and promoted its ubiquitylation and degradation by the proteasome. Moreover, the HRD1 protection of PA-treated HKC-8 cells was blunted by transfection with Myc-eIF2α. Thus, eIF2α ubiquitylation by HRD1 protects tubular epithelial cells from apoptosis caused by HG and PA, indicating a novel upstream target for therapeutic prevention of renal tubulointerstitial injury.
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Affiliation(s)
- Yujie Huang
- Renal Division, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.,Department of Pathology, Jiangsu Province Hospital of TCM, Affiliated Hospital of Nanjing University of TCM, Nanjing, 210026, Jiangsu Province, China
| | - Yifei Sun
- Department of Pathophysiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Yizhi Cao
- Department of Pathophysiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Hui Sun
- Renal Division, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Min Li
- Renal Division, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.,Department of Pathophysiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Hui You
- Renal Division, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, Jiangsu, China
| | - Dongming Su
- Center of Pathology and Clinical Laboratory, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, Jiangsu Province, China
| | - Yanjiao Li
- Department of Endocrinology, The Second Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi Province, China
| | - Xiubin Liang
- Renal Division, Sir Run Run Hospital, Nanjing Medical University, Nanjing, 211166, Jiangsu, China. .,Department of Pathophysiology, Nanjing Medical University, Nanjing, 211166, Jiangsu, China.
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Novel reno-protective mechanism of Aspirin involves H2AK119 monoubiquitination and Set7 in preventing type 1 diabetic nephropathy. Pharmacol Rep 2017; 70:497-502. [PMID: 29656179 DOI: 10.1016/j.pharep.2017.11.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 11/21/2017] [Accepted: 11/27/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND Even after several novel therapeutic approaches, the number of people with diabetic nephropathy (DN) still continues to increase globally, this suggest to find novel therapeutic strategies to prevent it completely. Recent reports, are indicating the ubiquitin proteasome system alterations in DN. Recently, we also showed that, histone H2AK119 mono-ubiquitination (H2AK119-Ub) found to regulate Set7, a key epigenetic enzyme in the development of renal fibrosis under type 1 diabetic condition. Hence, we aimed to study the role of a known 20s proteasome inhibitor Aspirin, on histone ubiquitination in the progression of DN. METHODS Male Wistar rats were rendered diabetic using a single dose of Streptozotocin (55mgkg-1, ip). After 4 weeks, diabetic animals were grouped into respective groups and the drug, aspirin, low dose (25mgkg-1day-1), high dose (50mgkg-1day-1) was administered through po route. At the end of the study, kidneys from all the groups were collected and processed separately for glomerular isolation, protein isolation, and for histopathological studies. RESULTS Aspirin administration, reduced the protein expression of Mysm1, increased the protein expression of H2AK119-Ub and thereby reduced the Set7 protein expression in glomeruli isolated from diabetic animals and prevented renal fibrosis. CONCLUSIONS In conclusion, our results are clearly indicating that, aspirin prevents renal fibrosis in diabetic animals through decreasing the expression of Mysm1, increasing the expression of H2AK119-Ub and thereby decreasing the protein expression of Set7, which is a novel mechanism. Moreover, this mechanism may lay down a novel strategy to prevent DN completely in future.
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CYLD Deubiquitinase Negatively Regulates High Glucose-Induced NF- κB Inflammatory Signaling in Mesangial Cells. BIOMED RESEARCH INTERNATIONAL 2017; 2017:3982906. [PMID: 29259980 PMCID: PMC5702419 DOI: 10.1155/2017/3982906] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 10/12/2017] [Accepted: 10/22/2017] [Indexed: 01/10/2023]
Abstract
Nuclear factor-kappa B (NF-κB) is the key part of multiple signal transduction of inflammation in the pathogenesis of diabetic nephropathy (DN). The ubiquitin-proteasome system is extensively involved in the regulation of the NF-κB pathway. Cylindromatosis (CYLD) has deubiquitinase activity and acts as a negative regulator of the NF-κB signaling pathway. However, the association between CYLD and NF-κB inflammatory signaling in DN is unclear. In the present study, mouse glomerular mesangial cells (GMCs) and rat GMCs were stimulated by elevated concentrations of glucose (10, 20, and 30 mmol/L high glucose) or mannitol as the osmotic pressure control. CYLD was overexpressed or suppressed by transfection with a CYLD expressing vector or CYLD-specific siRNA, respectively. Our data showed that high glucose significantly inhibited the protein and mRNA expression of CYLD in a dose- and time-dependent manner (both p < 0.05). siRNA-mediated knockdown CYLD facilitated the high glucose-induced activation of NF-κB signaling and triggered the release of MCP-1, IL-6, and IL-8 (all p < 0.05). However, these high glucose-mediated effects were blunted by overexpression of CYLD (p < 0.05). The present results support the involvement of CYLD in the regulation of NF-κB inflammatory signaling induced by elevated glucose, implicating CYLD as a potential therapeutic target of DN.
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Lee HJ, Park JM, Hahm KB. Mitigated NSAID-induced apoptotic and autophagic cell death with Smad7 overexpression. J Clin Biochem Nutr 2016; 60:55-62. [PMID: 28163383 PMCID: PMC5281534 DOI: 10.3164/jcbn.16-69] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 09/07/2016] [Indexed: 02/02/2023] Open
Abstract
Non-steroidal anti-inflammatory drugs damaged gastrointestinal mucosa in cyclooxygenase-dependent and -independent pathway, among which apopototic or autophagic cell death in gastrointestinal cells might be one of key cytotoxic mechanisms responsible for NSAID-induced damages. Therefore, alleviating this cell death after NSAIDs can be a rescuing strategy. In this study, we explored the role of Smad7 on NSAID-induced cytotoxicity in gastric epithelial cells. Using RGM1 cells, we have compared biological changes between mock-transfected and Smad7-overexpressed cells. As results, significantly decreased cytotoxicity accompanied with decreased levels of cleaved caspase-3 and poly (ADP-ribose) polymerase, Bax, and autophagic vesicles concurrent with decreased expressions of autophagy protein 5 and microtubule-associated protein light chain 3B-II were noted in Smad7-overexpressed cells with indomethacin administration compared to mock-transfected cells. Contrast to mitigated apoptotic execution, anti-apoptotic Bcl-2 and Beclin-1 were significantly increased in Smad7-overexpressed cells compared to mock-transfected cells. Smad7 siRNA significantly reversed these protective actions of Smad7 against indomethacin, in which p38 mitogen-activated protein kinase was significantly intervened. Furthermore, indomethacin-induced Smad7 degradation through ubiquitin-proteasome pathway was relevant to increased cytotoxicity, while chloroquine as autophagy inhibitor significantly attenuated indomethacin-induced cytotoxicity through Smad7 preservation via repressed ubiquitination. Conclusively, either genetic overexpression or pharmacological induction of Smad7 significantly attenuated indomethacin-induced gastric cell damages.
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Affiliation(s)
- Ho-Jae Lee
- Department of Biochemistry, Gachon University School of Medicine, 7-45, Songdo-dong, Yeonsu-ku, Incheon 406-840, Korea
| | - Jong Min Park
- CHA University Cancer Prevention Research Center, CHA Bio Complex, 335, Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea
| | - Ki Baik Hahm
- CHA University Cancer Prevention Research Center, CHA Bio Complex, 335, Pangyo-ro, Bundang-gu, Seongnam 463-400, Korea; CHA University Bundang Medical Center, 59, Yatap-ro, Bundang-gu, Seongnam 463-712, Korea
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Yadranji Aghdam S, Mahmoudpour A. Proteasome Activators, PA28 α and PA28 β, Govern Development of Microvascular Injury in Diabetic Nephropathy and Retinopathy. Int J Nephrol 2016; 2016:3846573. [PMID: 27830089 PMCID: PMC5088333 DOI: 10.1155/2016/3846573] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 08/08/2016] [Accepted: 09/06/2016] [Indexed: 12/25/2022] Open
Abstract
Diabetic nephropathy (DN) and diabetic retinopathy (DR) are major complications of type 1 and type 2 diabetes. DN and DR are mainly caused by injury to the perivascular supporting cells, the mesangial cells within the glomerulus, and the pericytes in the retina. The genes and molecular mechanisms predisposing retinal and glomerular pericytes to diabetic injury are poorly characterized. In this study, the genetic deletion of proteasome activator genes, PA28α and PA28β genes, protected the diabetic mice in the experimental STZ-induced diabetes model against renal injury and retinal microvascular injury and prolonged their survival compared with wild type STZ diabetic mice. The improved wellbeing and reduced renal damage was associated with diminished expression of Osteopontin (OPN) and Monocyte Chemoattractant Protein-1 (MCP-1) in the glomeruli of STZ-injected PA28α/PA28β double knockout (Pa28αβDKO) mice and also in cultured mesangial cells and retinal pericytes isolated from Pa28αβDKO mice that were grown in high glucose. The mesangial PA28-mediated expression of OPN under high glucose conditions was suppressed by peptides capable of inhibiting the binding of PA28 to the 20S proteasome. Collectively, our findings demonstrate that diabetic hyperglycemia promotes PA28-mediated alteration of proteasome activity in vulnerable perivascular cells resulting in microvascular injury and development of DN and DR.
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Affiliation(s)
- Saeed Yadranji Aghdam
- Reynolds Institute on Aging, Room No. 4151, 629 Jack Stephens Drive, Little Rock, AR 72205, USA
- Department of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Ali Mahmoudpour
- Norgen Biotek Corp., 3430 Schmon Parkway, Thorold, ON, Canada L2V 4Y6
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Histone H2AK119 and H2BK120 mono-ubiquitination modulate SET7/9 and SUV39H1 in type 1 diabetes-induced renal fibrosis. Biochem J 2016; 473:3937-3949. [PMID: 27582499 DOI: 10.1042/bcj20160595] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 08/31/2016] [Indexed: 12/20/2022]
Abstract
Hyperglycaemia-induced expression of extracellular matrix (ECM) components plays a major role in the development of diabetic nephropathy (DN). The epigenetic mechanisms that modulate ECM gene expression in DN remain unclear. Therefore, we examined the role of histone H2A and H2B monoubiquitination on epigenetic chromatin marks, such as histone H3 lysine dimethylation (H3K4Me2, H3K9Me2 and H3K79Me2) in type 1 diabetic rat kidney. Hyperglycaemia increased collagen deposition and Col1a1 gene expression. In whole kidney of diabetic animals, both H2AK119 mono-ubiquitination (H2AK119Ub) and H2BK120 mono-ubiquitination (H2BK120Ub) were found to be increased, whereas, in glomeruli of diabetic animals, expression of both H2AK119Ub and H2BK120Ub was reduced. Changes in ubiquitin proteasome system components like increased Rnf2 (H2A-specific E3 ligase) and decreased H2A- and H2B-specific deubiquitinases (ubiquitin-specific proteases 7, 16, 21 and 22) were also observed. Globally increased levels of chromatin marks associated with active genes (H3K4Me2 and H3K79Me2) and decreased levels of repressive marks (H3K9Me2) were also observed. Hyperglycaemia also increased the protein expression of SET7/9 and decreased the expression of SUV39H1. We also showed the decreased occupancy of H2AK119Ub and H2BK120Ub on the promoters of Set7/9 and Suv39h1 in diabetic kidney. In addition, methylation marks regulated by H2AK119Ub (H3K27Me2 and H3K36Me2) and H2BK120Ub (H3K4Me2 and H3K79Me2) were also found to be altered on the promoters of Set7/9 and Suv39h1 Taken together, these results show the functional role of H2AK119Ub and H2BK120Ub in regulating histone H3K4Me2 and H3K9Me2 through modulating the expression of SET7/9 and SUV39H1 in the development of diabetic renal fibrosis.
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Yan C, Xu W, Huang Y, Li M, Shen Y, You H, Liang X. HRD1-Mediated IGF-1R Ubiquitination Contributes to Renal Protection of Resveratrol in db/db Mice. Mol Endocrinol 2016; 30:600-13. [PMID: 27082896 DOI: 10.1210/me.2015-1277] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Many studies have provided evidence to demonstrate the beneficial renal effects of resveratrol (RESV) due to its antioxidant character and its capacity for activation of surtuin 1. However, the molecular mechanisms underlying the protective role of RESV against kidney injury are still incompletely understood. The present study used Lepr db/db (db/db) and Lepr db/m (db/m) mice as models to evaluate the effect of RESV on diabetic nephropathy (DN). RESV reduced proteinuria and attenuated the progress of renal fibrosis in db/db mice. Treatment with RESV markedly attenuated the diabetes-induced changes in renal superoxide dismutase copper/zinc, superoxide dismutase manganese, catalase, and malonydialdehyde as well as the renal expression of nicotinamide adenine dinucleotide phosphate oxidase 4 (NOX4), α-smooth muscle actin (α-SMA), and E-cadherin in db/db mice. The kidney expression of the IGF-1 receptor (IGF-1R) was increased in db/db mice, but the expression of 3-hydroxy-3-methylglutaryl reductase degradation (HRD1), a ubiquitin E3 ligase, was significantly decreased in the DN model. RESV treatment dramatically decreased IGF-1R and increased HRD1 expressions, consistent with data obtained with HKC-8 cells. HRD1 physically interacted with IGF-1R in HKC-8 cells and liquid chromatography and tandem mass spectrometry (LC-MS/MS) data supported the concept that IGF-1R is one of the HRD1 substrates. HRD1 promoted the IGF-1R ubiquitination for degradation in HKC-8 cells, and the down-regulation of HRD1 reversed the protective effects of RESV in HKC-8 cells. In summary, we have demonstrated that RESV reduces proteinuria and attenuates the progression of renal fibrosis in db/db mice. These protective effects of RESV on DN were associated with the up-regulation of HRD1, induced by RESV, and the promotion of IGF-1R ubiquitination and degradation.
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Affiliation(s)
- Caifeng Yan
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
| | - Weifeng Xu
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
| | - Yujie Huang
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
| | - Min Li
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
| | - Yachen Shen
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
| | - Hui You
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
| | - Xiubin Liang
- Department of Endocrinology (C.Y.), Clinical Medical College of Yangzhou University, Yangzhou 225001, Jiangsu, China; Jiangsu Key Laboratory of Xenotransplantation (C.Y., W.X., Y.H., M.L., Y.S., H.Y., X.L.), Department of Pathophysiology, Nanjing Medical University, Nanjing 210029, Jiangsu, China. and Renal Division (W.X.), Zhuji People Hospital, Zhuji 311800, Zhejiang, China
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Rapid Identification of Potential Drugs for Diabetic Nephropathy Using Whole-Genome Expression Profiles of Glomeruli. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1634730. [PMID: 27069916 PMCID: PMC4812204 DOI: 10.1155/2016/1634730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/25/2016] [Accepted: 02/08/2016] [Indexed: 12/26/2022]
Abstract
Objective. To investigate potential drugs for diabetic nephropathy (DN) using whole-genome expression profiles and the Connectivity Map (CMAP). Methodology. Eighteen Chinese Han DN patients and six normal controls were included in this study. Whole-genome expression profiles of microdissected glomeruli were measured using the Affymetrix human U133 plus 2.0 chip. Differentially expressed genes (DEGs) between late stage and early stage DN samples and the CMAP database were used to identify potential drugs for DN using bioinformatics methods. Results. (1) A total of 1065 DEGs (FDR < 0.05 and fold change > 1.5) were found in late stage DN patients compared with early stage DN patients. (2) Piperlongumine, 15d-PGJ2 (15-delta prostaglandin J2), vorinostat, and trichostatin A were predicted to be the most promising potential drugs for DN, acting as NF-κB inhibitors, histone deacetylase inhibitors (HDACIs), PI3K pathway inhibitors, or PPARγ agonists, respectively. Conclusion. Using whole-genome expression profiles and the CMAP database, we rapidly predicted potential DN drugs, and therapeutic potential was confirmed by previously published studies. Animal experiments and clinical trials are needed to confirm both the safety and efficacy of these drugs in the treatment of DN.
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The role of ubiquitination and sumoylation in diabetic nephropathy. BIOMED RESEARCH INTERNATIONAL 2014; 2014:160692. [PMID: 24991536 PMCID: PMC4065738 DOI: 10.1155/2014/160692] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/19/2014] [Indexed: 01/14/2023]
Abstract
Diabetic nephropathy (DN) is a common and characteristic microvascular complication of diabetes; the mechanisms that cause DN have not been clarified, and the epigenetic mechanism was promised in the pathology of DN. Furthermore, ubiquitination and small ubiquitin-like modifier (SUMO) were involved in the progression of DN. MG132, as a ubiquitin proteasome, could improve renal injury by regulating several signaling pathways, such as NF-κB, TGF-β, Nrf2-oxidative stress, and MAPK. In this review, we summarize how ubiquitination and sumoylation may contribute to the pathology of DN, which may be a potential treatment strategy of DN.
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