1
|
Zhang Y, Xia S, Tian X, Yuan L, Gao Y, Liu D, Qi H, Wang S, Liu Z, Li Y, Zhao Z, Liu W. miR-4645-3p attenuates podocyte injury and mitochondrial dysfunction in diabetic kidney disease by targeting Cdk5. FASEB J 2024; 38:e23668. [PMID: 38742811 DOI: 10.1096/fj.202300357rr] [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: 02/25/2023] [Revised: 04/18/2024] [Accepted: 04/30/2024] [Indexed: 05/16/2024]
Abstract
Podocyte injury plays a critical role in the progression of diabetic kidney disease (DKD), but the underlying cellular and molecular mechanisms remain poorly understanding. MicroRNAs (miRNAs) can disrupt gene expression by inducing translation inhibition and mRNA degradation, and recent evidence has shown that miRNAs may play a key role in many kidney diseases. In this study, we identified miR-4645-3p by global transcriptome expression profiling as one of the major downregulated miRNAs in high glucose-cultured podocytes. Moreover, whether DKD patients or STZ-induced diabetic mice, expression of miR-4645-3p was also significantly decreased in kidney. In the podocytes cultured by normal glucose, inhibition of miR-4645-3p expression promoted mitochondrial damage and podocyte apoptosis. In the podocytes cultured by high glucose (30 mM glucose), overexpression of miR-4645-3p significantly attenuated mitochondrial dysfunction and podocyte apoptosis induced by high glucose. Furthermore, we found that miR-4645-3p exerted protective roles by targeting Cdk5 inhibition. In vitro, miR-4645-3p obviously antagonized podocyte injury by inhibiting overexpression of Cdk5. In vivo of diabetic mice, podocyte injury, proteinuria, and impaired renal function were all effectively ameliorated by treatment with exogenous miR-4645-3p. Collectively, these findings demonstrate that miR-4645-3p can attenuate podocyte injury and mitochondrial dysfunction in DKD by targeting Cdk5. Sustaining the expression of miR-4645-3p in podocytes may be a novel strategy to treat DKD.
Collapse
Affiliation(s)
- Yue Zhang
- Department of Diagnostics, Hebei Medical University, Shijiazhuang, China
| | - Shunjie Xia
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
- Department of Pathology, Yixing People's Hospital, Yixing, China
| | - Xiaoxi Tian
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
| | - Liming Yuan
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
| | - Yuan Gao
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
| | - Dan Liu
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
| | - Huimin Qi
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
| | - Shuo Wang
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
| | - Zanchao Liu
- Hebei Key Laboratory of Basic Medicine for Diabetes, Shijiazhuang Second Hospital, Shijiazhuang, China
| | - Yang Li
- Hebei Key Laboratory of Basic Medicine for Diabetes, Shijiazhuang Second Hospital, Shijiazhuang, China
| | - Zhe Zhao
- Hebei Key Laboratory of Basic Medicine for Diabetes, Shijiazhuang Second Hospital, Shijiazhuang, China
| | - Wei Liu
- Department of Pathology, Key Laboratory of Kidney Diseases of Hebei Province, Hebei Medical University, Shijiazhuang, China
- Center of Metabolic Diseases and Cancer Research, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Forensic Medicine, Shijiazhuang, China
| |
Collapse
|
2
|
Zhu X, Mou Z, Han W, Chen L. All-trans retinoic acid inhibits oxidative stress via ACE2/Ang (1-7)/MasR pathway in renal tubular epithelial cells stimulated with high glucose. Drug Dev Res 2023; 84:1008-1017. [PMID: 37114746 DOI: 10.1002/ddr.22070] [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: 09/23/2022] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 04/29/2023]
Abstract
The aim of this study was to investigate the effects of all-trans retinoic acid (atRA) on oxidative stress in renal tubular epithelial cells induced by high glucose (HG) and its potential mechanism. We investigated the effects of atRA in HG-induced renal epithelial cell line HK-2. Seven groups were designed for this experiment: negative control, mannitol, high-glucose (HG), HG combined with a low concentration of atRA, HG combined with a middle concentration of atRA, HG combined with a high concentration of atRA, and HG combined with captopril. After 48 h of incubation, oxidative stress factor expression in the supernatant was detected by enzyme-linked immunosorbent assay. Reactive oxygen species and cell apoptosis expression were assessed by flow cytometry. NADPH oxidase, fibrosis factor, and angiotensin-converting enzyme 2/angiotensin (1-7)/mas receptor (ACE2/Ang (1-7)/MasR) pathway-related protein expressions were determined by western blot analysis. The expressions of oxidative stress factors, NADPH oxidase components, and fibrosis factors were significantly higher after HG treatment. Apoptosis of HK2 cells in the HG group was also significantly higher. AtRA could reverse the above abnormal changes in a concentration-dependent manner. HG significantly promoted the expression of ACE, Ang II, and Ang II type 1 receptor (AT1R), whereas it inhibited the expression of ACE2, Ang (1-7), and MasR. With the elevation of concentration, atRA could gradually suppress the expression of ACE, Ang II, and AT1R, but facilitate ACE2, Ang (1-7), and MasR. These results were statistically significant. AtRA could significantly inhibit oxidative stress and apoptosis of renal tubular epithelial cells induced by HG. The mechanism may inhibit the ACE/Ang II/AT1R pathway and/or activate ACE2/Ang (1-7)/MasR pathway.
Collapse
Affiliation(s)
- Xiaojuan Zhu
- Department of Nephrology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Zhixiang Mou
- Department of Nephrology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Wei Han
- Department of Nephrology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Lan Chen
- Department of Nephrology, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| |
Collapse
|
3
|
Guo Y, Wang M, Liu Y, Pang Y, Tian L, Zhao J, Liu M, Shen C, Meng Y, Wang Y, Cai Z, Zhao W. BaoShenTongLuo formula protects against podocyte injury by regulating AMPK-mediated mitochondrial biogenesis in diabetic kidney disease. Chin Med 2023; 18:32. [PMID: 36967383 PMCID: PMC10040124 DOI: 10.1186/s13020-023-00738-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND Mitochondrial dysfunction is considered to be an important contributor in podocyte injury under diabetic conditions. The BaoShenTongLuo (BSTL) formula has been shown to reduce podocyte damage and postpone the progression of diabetic kidney disease (DKD). The potential mechanisms underlying the effects of BSTL, however, have yet to be elucidated. In this study, we aimed to investigate whether the effects of BSTL are related to the regulation of mitochondrial biogenesis via the adenosine monophosphate-activated protein kinase (AMPK) pathway. METHODS High-Performance Liquid Chromatography Electrospray Ionization Mass Spectrometer (HPLC-ESI-MS) analysis was performed to investigate the characteristics of pure compounds in BSTL. db/db mice and mouse podocyte clone-5 (MPC5) cells were exposed to high glucose (HG) to induce DKD and podocyte damage. Body weight, random blood glucose, urinary albumin/creatinine ratio (UACR), indicators of renal function and renal histological lesions were measured. Markers of podocyte injury, mitochondrial morphology, mitochondrial deoxyribonucleic acid (mtDNA) content, mitochondrial respiratory chain complexes activities, reactive oxygen species (ROS) production, and mitochondrial membrane potential (MMP) levels were assessed. Protein expressions of AMPK, peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1α), transcription factor A (TFAM), mitochondrial fusion protein 2 (MFN2) and dynamin-related protein 1 (DRP1) were also detected. MPC5 cells were transfected with AMPKα small interfering RNA (AMPKα siRNA) to determine the underlying mechanisms of BSTL improvement of mitochondrial function under diabetic conditions. RESULTS In vivo, treatment with BSTL reduced the UACR levels, reversed the histopathological changes in renal tissues, and alleviated the podocyte injury observed in db/db mice. After BSTL treatment, the decreased mtDNA content and mitochondrial respiratory chain complex I, III, and IV activities were significantly improved, and these effects were accompanied by maintenance of the protein expression of p-AMPKαT172, PGC-1α, TFAM and MFN2. The in vitro experiments also showed that BSTL reduced podocyte apoptosis, suppressed excessive cellular ROS production, and reversed the decreased in MMP that were observed under HG conditions. More importantly, the effects of BSTL in enhancing mitochondrial biogenesis and reducing podocyte apoptosis were inhibited in AMPKα siRNA-treated podocytes. CONCLUSION BSTL plays a crucial role in protecting against podocyte injury by regulating the AMPK-mediated mitochondrial biogenesis in DKD.
Collapse
Affiliation(s)
- Yifan Guo
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Mengdi Wang
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Yufei Liu
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yanyu Pang
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Lei Tian
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Jingwen Zhao
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
- Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Mengchao Liu
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Cun Shen
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Yuan Meng
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Yuefen Wang
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China
| | - Zhen Cai
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China.
| | - Wenjing Zhao
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China.
| |
Collapse
|
4
|
Wang J, Dai L, Yue X, Shen C, Li T, Long L, Zhi Y, Wang Y, Shen G, Shi C, Liu Y, Fang Q, Li W. IR-61 Improves Voiding Function via Mitochondrial Protection in Diabetic Rats. Front Pharmacol 2021; 12:608637. [PMID: 33935703 PMCID: PMC8080033 DOI: 10.3389/fphar.2021.608637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 02/26/2021] [Indexed: 12/26/2022] Open
Abstract
Diabetic bladder dysfunction (DBD) afflicts nearly half of diabetic patients, but effective treatment is lacking. In this study, IR-61, a novel heptamethine cyanine dye with potential antioxidant effects, was investigated to determine whether it can alleviate DBD. Rats were intraperitoneally injected with IR-61 or vehicle after diabetes was induced with streptozotocin. Before evaluating the effects of IR-61 in improving DBD by filling cystometry, we detected its distribution in tissues and subcellular organelles by confocal fluorescence imaging. Near infrared (NIR) imaging showed that IR-61 could accumulate at high levels in the bladders of diabetic rats, and confocal images demonstrated that it was mainly taken up by bladder smooth muscle cells (BSMCs) and localized in mitochondria. Then, filling cystometry illustrated that IR-61 significantly improved the bladder function of diabetic rats. The histomorphometry results showed that IR-61 effectively mitigated the pathological changes in bladder smooth muscle (BSM) in diabetic rats. Furthermore, IR-61 remarkably reduced the number of apoptotic BSMCs and the unfavorable expression of proteins related to the mitochondrial apoptotic pathway (Bcl-2, BAX, Cytochrome C, and cleaved Caspase-9) in diabetic rats. Moreover, the frozen section staining and transmission electron microscopy results proved that IR-61 significantly reduced the reactive oxygen species (ROS) levels and prevented the mitochondrial mass and morphology damage in the BSM of diabetic rats. In addition, IR-61 upregulated the expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and its associated antioxidant proteins in the BSM of diabetic rats. Together, these results indicate that IR-61 can improve the voiding function of rats with DBD by protecting the mitochondria of BSMCs from oxidative stress, which is possibly mediated through the activation of the Nrf2 pathway.
Collapse
Affiliation(s)
- Jianwu Wang
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Linyong Dai
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Xiaofeng Yue
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Chongxing Shen
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Tong Li
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Lei Long
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Rocket Force Medicine, Third Military Medical University, Chongqing, China
| | - Yi Zhi
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Yawei Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Rocket Force Medicine, Third Military Medical University, Chongqing, China
| | - Gufang Shen
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Rocket Force Medicine, Third Military Medical University, Chongqing, China
| | - Chunmeng Shi
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Rocket Force Medicine, Third Military Medical University, Chongqing, China
| | - Yunsheng Liu
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Rocket Force Medicine, Third Military Medical University, Chongqing, China
| | - Qiang Fang
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| | - Weibing Li
- Department of Urology, The Third Affiliated Hospital (Gener Hospital) of Chongqing Medical University, Chongqing, China
| |
Collapse
|
5
|
Jaimes EA, Zhou MS, Siddiqui M, Rezonzew G, Tian R, Seshan SV, Muwonge AN, Wong NJ, Azeloglu EU, Fornoni A, Merscher S, Raij L. Nicotine, smoking, podocytes, and diabetic nephropathy. Am J Physiol Renal Physiol 2021; 320:F442-F453. [PMID: 33459165 PMCID: PMC7988804 DOI: 10.1152/ajprenal.00194.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 12/13/2022] Open
Abstract
Diabetic nephropathy (DN) is the leading cause of end-stage kidney disease. Besides glycemic and blood pressure control, environmental factors such as cigarette smoking (CS) adversely affect the progression of DN. The effects of CS on DN progression have been attributed to combustion-generated molecules without consideration to the role of nicotine (NIC), responsible for the addictive properties of both CS and electronic cigarettes (ECs). Podocytes are essential to preserve the structure and function of the glomerular filtration barrier, and strong evidence indicates that early podocyte loss promotes DN progression. We performed experiments in human podocytes and in a mouse model of diabetes that develops nephropathy resembling human DN. We determined that NIC binding to podocytes in concentrations achieved with CS and ECs activated NADPH oxidase, which sets in motion a dysfunctional molecular network integrated by cyclooxygenase 2, known to induce podocyte injury; downregulation of AMP-activated protein kinase, important for maintaining cellular energy stores and antioxidation; and upregulation of CD36, which increased lipid uptake and promoted apoptosis. In diabetic mice, NIC increased proteinuria, a recognized marker of chronic kidney disease progression, accompanied by reduced glomerular podocyte synaptopodin, a crucial stabilizer of the podocyte cytoskeleton, and increased fibronectin expression. This novel study critically implicates NIC itself as a contributor to DN progression in CS and EC users.NEW & NOTEWORTHY In this study, we demonstrate that nicotine increases the production of reactive oxygen species, increases cyclooxygenase-2 expression, and upregulates Cd36 while inducing downregulation of AMP-activated protein kinase. In vivo nicotine increases proteinuria and fibronectin expression in diabetic mice. This study demonstrates that effects of nicotine on podocytes are responsible, at least in part, for the deleterious effects of smoking in the progression of chronic kidney disease, including diabetic nephropathy.
Collapse
Affiliation(s)
- Edgar A Jaimes
- Renal Service, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Ming-Sheng Zhou
- Department of Physiology, Shenyang Medical University, Shenyang, China
| | - Mohammed Siddiqui
- Renal Division, University of Alabama at Birmingham, Birmingham, Alabama
| | - Gabriel Rezonzew
- Renal Division, University of Alabama at Birmingham, Birmingham, Alabama
| | - Runxia Tian
- Nephrology Section, Miami Veterans Affairs Medical Center, Miami, Florida
| | - Surya V Seshan
- Department of Pathology, Weill Cornell Medical College, New York, New York
| | - Alecia N Muwonge
- Division of Nephrology, Department of Medicine, Icahn Mount Sinai School of Medicine, New York, New York
| | - Nicholas J Wong
- Division of Nephrology, Department of Medicine, Icahn Mount Sinai School of Medicine, New York, New York
| | - Evren U Azeloglu
- Division of Nephrology, Department of Medicine, Icahn Mount Sinai School of Medicine, New York, New York
| | - Alessia Fornoni
- Katz Family Division of Nephrology and Hypertension, University of Miami Miller School of Medicine, Miami, Florida
| | - Sandra Merscher
- Katz Family Division of Nephrology and Hypertension, University of Miami Miller School of Medicine, Miami, Florida
| | - Leopoldo Raij
- Katz Family Division of Nephrology and Hypertension, University of Miami Miller School of Medicine, Miami, Florida
| |
Collapse
|
6
|
Wen D, Tan RZ, Zhao CY, Li JC, Zhong X, Diao H, Lin X, Duan DD, Fan JM, Xie XS, Wang L. Astragalus mongholicus Bunge and Panax notoginseng (Burkill) F.H. Chen Formula for Renal Injury in Diabetic Nephropathy- In Vivo and In Vitro Evidence for Autophagy Regulation. Front Pharmacol 2020; 11:732. [PMID: 32595492 PMCID: PMC7303297 DOI: 10.3389/fphar.2020.00732] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 05/01/2020] [Indexed: 12/19/2022] Open
Abstract
Background Diabetic nephropathy (DN) is a serious complication of diabetes mellitus (DM) with limited treatment options. DN leads to progressive renal failure and accelerates rapidly into end-stage renal disease. Astragalus mongholicus Bunge and Panax notoginseng (Burkill) F.H. Chen formula (APF) is a traditional Chinese medicine (TCM) formula widely used to treat chronic kidney diseases (CKD) in the clinic in the southwest of China. The aim of this study is to explore how APF and its related TCM theory work on DN and whether mTOR/PINK1/Parkin signaling plays a part in this process. Methods HPLC was used for preliminary chemical analysis and quantitative analysis of the five components of APF. An in vivo autophagy deficiency model was established in C57BL/6 mice by streptozocin (STZ) combined with a high-fat and high-sugar diet, while the in vitro autophagy deficiency model was induced with high glucose (HG) in renal mesangial cells (RMCs). Renal histopathology staining was performed to investigate the extents of inflammation and injury. Real time-PCR and Western blotting techniques were utilized to assess autophagy-related proteins. Results APF significantly ameliorated renal injury in DN mice, specifically restoring blood urea nitrogen, serum creatinine, and 24-hour albuminuria. APF also reduced the mRNA and protein expressions of TNFα, IL-1β, and IL-6 in STZ-induced DN mice. Furthermore, APF improved the autophagy deficiency induced by STZ in vivo or HG in vitro, as revealed by changes in the expressions of mTOR, PINK1, Parkin, Beclin 1, p62, and LC3B. Notably, inhibition of autophagy with 3-methyladenine in APF-treated RMCs aggravated cellular damage and altered mTOR/PINK1/Parkin signaling, indicating that APF rescued HG damage through promoting autophagy. Conclusion APF may protect the kidneys from inflammation injuries in DN by upregulating autophagy via suppressing mTOR and activating PINK1/Parkin signaling. This experimental evidence strongly supports APF as a potential option for the prevention and treatment of DN.
Collapse
Affiliation(s)
- Dan Wen
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China.,Department of Nephrology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Rui-Zhi Tan
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Chang-Ying Zhao
- Department of Endocrinology, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Jian-Chun Li
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Xia Zhong
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Hui Diao
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China.,Department of Nephrology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiao Lin
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| | - Dayue Darrel Duan
- Center for Phenomics of Traditional Chinese Medicine, Southwest Medical University, Luzhou, China
| | - Jun-Ming Fan
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China.,Chengdu Medical College, Chengdu, China
| | - Xi-Sheng Xie
- Department of Nephrology, Nanchong Central Hospital, Nanchong, China
| | - Li Wang
- Research Center of Combined Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, China
| |
Collapse
|
7
|
Miyamoto S, Zhang G, Hall D, Oates PJ, Maity S, Madesh M, Han X, Sharma K. Restoring mitochondrial superoxide levels with elamipretide (MTP-131) protects db/db mice against progression of diabetic kidney disease. J Biol Chem 2020; 295:7249-7260. [PMID: 32277051 PMCID: PMC7247302 DOI: 10.1074/jbc.ra119.011110] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 04/03/2020] [Indexed: 01/14/2023] Open
Abstract
Exposure to chronic hyperglycemia because of diabetes mellitus can lead to development and progression of diabetic kidney disease (DKD). We recently reported that reduced superoxide production is associated with mitochondrial dysfunction in the kidneys of mouse models of type 1 DKD. We also demonstrated that humans with DKD have significantly reduced levels of mitochondrion-derived metabolites in their urine. Here we examined renal superoxide production in a type 2 diabetes animal model, the db/db mouse, and the role of a mitochondrial protectant, MTP-131 (also called elamipretide, SS-31, or Bendavia) in restoring renal superoxide production and ameliorating DKD. We found that 18-week-old db/db mice have reduced renal and cardiac superoxide levels, as measured by dihydroethidium oxidation, and increased levels of albuminuria, mesangial matrix accumulation, and urinary H2O2 Administration of MTP-131 significantly inhibited increases in albuminuria, urinary H2O2, and mesangial matrix accumulation in db/db mice and fully preserved levels of renal superoxide production in these mice. MTP-131 also reduced total renal lysocardiolipin and major lysocardiolipin subspecies and preserved lysocardiolipin acyltransferase 1 expression in db/db mice. These results indicate that, in type 2 diabetes, DKD is associated with reduced renal and cardiac superoxide levels and that MTP-131 protects against DKD and preserves physiological superoxide levels, possibly by regulating cardiolipin remodeling.
Collapse
Affiliation(s)
- Satoshi Miyamoto
- Center for Renal Translational Medicine, Division of Nephrology-Hypertension, University of California, San Diego, La Jolla, California 92093; Division of Nephrology-Hypertension, Veterans Affairs San Diego Healthcare System, La Jolla, California 92093
| | - Guanshi Zhang
- Center for Renal Precision Medicine, Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas 78229; Audie L. Murphy Memorial Veterans Affairs Hospital, South Texas Veterans Health Care System, San Antonio, Texas 78229
| | - David Hall
- Institute of Engineering in Medicine, University of California, San Diego, La Jolla, California 92093
| | - Peter J Oates
- Oates Biomedical Consulting, LLC, Old Lyme, Connecticut 06371
| | - Soumya Maity
- Center for Renal Precision Medicine, Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas 78229
| | - Muniswamy Madesh
- Center for Renal Precision Medicine, Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas 78229
| | - Xianlin Han
- Division of Diabetes, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas 78229
| | - Kumar Sharma
- Center for Renal Precision Medicine, Division of Nephrology, Department of Medicine, University of Texas Health San Antonio, San Antonio, Texas 78229; Audie L. Murphy Memorial Veterans Affairs Hospital, South Texas Veterans Health Care System, San Antonio, Texas 78229.
| |
Collapse
|
8
|
Sun J, Zhang L, Fang J, Yang S, Chen L. Galectin-3 mediates high-glucose-induced cardiomyocyte injury by the NADPH oxidase/reactive oxygen species pathway. Can J Physiol Pharmacol 2020; 98:826-833. [PMID: 32311288 DOI: 10.1139/cjpp-2019-0708] [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] [Indexed: 01/20/2023]
Abstract
Galectin-3 is a member of the β-galactoside-binding lectin family taking part in the regulation of inflammation, angiogenesis, and fibrosis. This study was designed to study the improved effect of galectin-3 inhibition on diabetic cardiomyopathy (DCM). Sprague-Dawley rats were randomized into the control, DCM, and DCM + modified citrus pectin (MCP) (a galectin-3 pharmacological inhibitor) groups. After 8 weeks, streptozotocin-induced DCM led to high blood glucose level, oxidative stress, cardiac injury, and dysfunction accompanied by suppressed body mass. On the contrary, MCP (100 mg·kg-1·day-1) administration improved body mass and blood glucose level and attenuated cardiac injury and dysfunction in DCM rats. Additionally, MCP attenuated pathological changes in plasma and myocardial tissue markers of oxidative stress, such as hydrogen peroxide and malonyldialdehyde, although it did not change superoxide dismutase activities, which were decreased in the DCM group. The levels of oxidative stress associated proteins evaluated by Western blot, such as p67phox and NADPH oxidase 4, were obviously increased in the DCM group, while they were reversed by MCP treatment. Therefore, galectin-3-mediated high-glucose-induced cardiomyocyte injury and galectin-3 inhibition attenuated DCM by suppressing NADPH oxidase. These findings suggested that galectin-3 could be a potential target for treatment of patients with DCM.
Collapse
Affiliation(s)
- Jingang Sun
- Linyi Central Hospital, Linyi, China, 276400
| | | | | | - Shuguo Yang
- Linyi Central Hospital, Linyi, China, 276400
| | | |
Collapse
|
9
|
Cuevas S, Villar VAM, Jose PA. Genetic polymorphisms associated with reactive oxygen species and blood pressure regulation. THE PHARMACOGENOMICS JOURNAL 2019; 19:315-336. [PMID: 30723314 PMCID: PMC6650341 DOI: 10.1038/s41397-019-0082-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 10/19/2018] [Accepted: 12/21/2018] [Indexed: 02/08/2023]
Abstract
Hypertension is the most prevalent cause of cardiovascular disease and kidney failure, but only about 50% of patients achieve adequate blood pressure control, in part, due to inter-individual genetic variations in the response to antihypertensive medication. Significant strides have been made toward the understanding of the role of reactive oxygen species (ROS) in the regulation of the cardiovascular system. However, the role of ROS in human hypertension is still unclear. Polymorphisms of some genes involved in the regulation of ROS production are associated with hypertension, suggesting their potential influence on blood pressure control and response to antihypertensive medication. This review provides an update on the genes associated with the regulation of ROS production in hypertension and discusses the controversies on the use of antioxidants in the treatment of hypertension, including the antioxidant effects of antihypertensive drugs.
Collapse
Affiliation(s)
- Santiago Cuevas
- Center for Translational Science, Children's National Health System, 111 Michigan Avenue, NW, Washington, DC, 20010, USA.
| | - Van Anthony M Villar
- Department of Medicine, Division of Renal Diseases and Hypertension, The George Washington University School of Medicine and Health Sciences, Walter G. Ross Hall, Suite 738, 2300 I Street, NW, Washington, DC, 20052, USA
| | - Pedro A Jose
- Department of Medicine, Division of Renal Diseases and Hypertension, The George Washington University School of Medicine and Health Sciences, Walter G. Ross Hall, Suite 738, 2300 I Street, NW, Washington, DC, 20052, USA
| |
Collapse
|
10
|
Cui J, Liu X, Zhang Z, Xuan Y, Liu X, Zhang F. EPO protects mesenchymal stem cells from hyperglycaemic injury via activation of the Akt/FoxO3a pathway. Life Sci 2019; 222:158-167. [PMID: 30597174 DOI: 10.1016/j.lfs.2018.12.045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 12/11/2018] [Accepted: 12/27/2018] [Indexed: 01/16/2023]
Abstract
INTRODUCTION Mesenchymal stem cell (MSC)-based therapies have demonstrated positive outcomes for treating cardiovascular disease. However, the proliferative ability of MSCs decreases during chronic exposure to hyperglycaemia; their ability to contribute to endogenous injury repair is thus reduced. Erythropoietin (EPO) was recently reported to protect against hyperglycaemia-related injury in various cells and may be a good candidate for enhancing MSC functions under hyperglycaemic conditions. METHODS Bone marrow-derived MSCs were isolated from male donor rats weighing 60-80 g. The roles of EPO in regulating cell viability, senescence, angiogenesis and inflammation were investigated using the Cell Counting Kit-8 (CCK-8) assay and 5-ethynyl-2'-deoxyuridine (EdU) assays; senescence-associated β-galactosidase (SA-β-gal) staining; VEGF, HGF, IGF, bFGF ELISAs and TNF-α ELISA, respectively. ROS production was measured by flow cytometry. The expression levels of Akt, forkhead box class O3a (FoxO3a) and VEGF proteins in MSCs were analysed by western blotting. Matrigel was used for tube formation assays. RESULTS The results of the current study showed that EPO has beneficial effects on MSCs exposed to hyperglycaemia by promoting proliferation, inhibiting senescence and the release of pro-inflammatory factors, increasing the secretion of proangiogenic cytokines, and enhancing the ability of MSCs to stimulate tube formation among human umbilical vein endothelial cells (HUVECs). In addition, the beneficial effects of EPO may result from the activation of the Akt/FoxO3a signalling pathway. CONCLUSIONS Our study demonstrates for the first time that EPO protects MSCs from hyperglycaemia-induced damage by targeting the Akt/FoxO3a signalling pathway.
Collapse
Affiliation(s)
- Jinjin Cui
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, PR China
| | - Xiaohong Liu
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, PR China
| | - Zhuoqi Zhang
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, PR China
| | - Yongli Xuan
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, PR China
| | - Xinxin Liu
- Department of Cardiology, The Second Affiliated Hospital of Harbin Medical University, PR China
| | - Fengyun Zhang
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, PR China.
| |
Collapse
|
11
|
Wan RJ, Li YH. MicroRNA‑146a/NAPDH oxidase4 decreases reactive oxygen species generation and inflammation in a diabetic nephropathy model. Mol Med Rep 2018; 17:4759-4766. [PMID: 29328400 DOI: 10.3892/mmr.2018.8407] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 03/30/2017] [Indexed: 11/06/2022] Open
Abstract
The present study investigated the role of microRNA (miR)‑146a in a diabetic nephropathy (DN) model, and its molecular mechanism. DN mice were given intraperitoneal injections of streptozotocin (55 mg/kg/day) for 5 consecutive days as an in vivo DN model. The HK‑2 human kidney cell line were exposed to 45% D‑glucose as an in vitro DN model. Firstly, it was demonstrated that miR‑146a expression was inhibited and NAPDH oxidase 4 (Nox4) was increased in DN mice. In HK‑2 cells, overexpression of miR‑146a inhibited Nox4 protein expression and decreased reactive oxygen species (ROS) generation, oxidative stress and inflammation, and suppressed vascular cell adhesion molecule‑1 (VCAM‑1) and intracellular adhesion molecule‑1 (ICAM‑1) protein expression. Nacetylcysteine, a Nox4 inhibitor, was demonstrated to inhibit ROS generation, suppress VCAM‑1 and ICAM‑1 protein expression, and decrease oxidative stress and inflammation in HK‑2 cells following overexpression of miR‑146a. In conclusion, these results indicated that miR‑146a/Nox4 decreases ROS generation and inflammation and prevents DN. Therefore, miR‑146a may represent a novel anti‑inflammatory and ‑oxidative modulator of DN.
Collapse
Affiliation(s)
- Rong Jun Wan
- Department of Urology, Hospital of Tianjin Nankai, Nankai, Tianjin 300100, P.R. China
| | - Yue Hong Li
- Department of Urology, Hospital of Tianjin Nankai, Nankai, Tianjin 300100, P.R. China
| |
Collapse
|
12
|
Zheng H, Wu J, Jin Z, Yan LJ. Potential Biochemical Mechanisms of Lung Injury in Diabetes. Aging Dis 2017; 8:7-16. [PMID: 28203478 PMCID: PMC5287388 DOI: 10.14336/ad.2016.0627] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Accepted: 06/27/2016] [Indexed: 12/17/2022] Open
Abstract
Accumulating evidence has shown that the lung is one of the target organs for microangiopathy in patients with either type 1 or type 2 diabetes mellitus (DM). Diabetes is associated with physiological and structural abnormalities in the diabetic lung concurrent with attenuated lung function. Despite intensive investigations in recent years, the pathogenic mechanisms of diabetic lung injury remain largely elusive. In this review, we summarize currently postulated mechanisms of diabetic lung injury. We mainly focus on the pathogenesis of diabetic lung injury that implicates key pathways, including oxidative stress, non-enzymatic protein glycosylation, polyol pathway, NF-κB pathway, and protein kinase c pathway. We also highlight that while numerous studies have mainly focused on tissue or cell damage in the lung, studies focusing on mitochondrial dysfunction in the diabetic lung have remained sketchy. Hence, further understanding of mitochondrial mechanisms of diabetic lung injury should provide invaluable insights into future therapeutic approaches for diabetic lung injury.
Collapse
Affiliation(s)
- Hong Zheng
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA; 2Department of Basic Theory of Traditional Chinese Medicine, College of Basic Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, 250355, China
| | - Jinzi Wu
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Zhen Jin
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Liang-Jun Yan
- 1Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| |
Collapse
|
13
|
Gum arabic improves semen quality and oxidative stress capacity in alloxan induced diabetes rats. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2016. [DOI: 10.1016/j.apjr.2016.07.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
14
|
Affiliation(s)
- Dwight A Towler
- From the Endocrine Division, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX.
| |
Collapse
|
15
|
Raij L, Tian R, Wong JS, He JC, Campbell KN. Podocyte injury: the role of proteinuria, urinary plasminogen, and oxidative stress. Am J Physiol Renal Physiol 2016; 311:F1308-F1317. [PMID: 27335373 DOI: 10.1152/ajprenal.00162.2016] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 06/13/2016] [Indexed: 12/19/2022] Open
Abstract
Podocytes are the key target for injury in proteinuric glomerular diseases that result in podocyte loss, progressive focal segmental glomerular sclerosis (FSGS), and renal failure. Current evidence suggests that the initiation of podocyte injury and associated proteinuria can be separated from factors that drive and maintain these pathogenic processes leading to FSGS. In nephrotic urine aberrant glomerular filtration of plasminogen (Plg) is activated to the biologically active serine protease plasmin by urokinase-type plasminogen activator (uPA). In vivo inhibition of uPA mitigates Plg activation and development of FSGS in several proteinuric models of renal disease including 5/6 nephrectomy. Here, we show that Plg is markedly increased in the urine in two murine models of proteinuric kidney disease associated with podocyte injury: Tg26 HIV-associated nephropathy and the Cd2ap-/- model of FSGS. We show that human podocytes express uPA and three Plg receptors: uPAR, tPA, and Plg-RKT. We demonstrate that Plg treatment of podocytes specifically upregulates NADPH oxidase isoforms NOX2/NOX4 and increases production of mitochondrial-dependent superoxide anion (O2-) that promotes endothelin-1 synthesis. Plg via O2- also promotes expression of the B scavenger receptor CD36 and subsequent increased intracellular cholesterol uptake resulting in podocyte apoptosis. Taken together, our findings suggest that following disruption of the glomerular filtration barrier at the onset of proteinuric disease, podocytes are exposed to Plg resulting in further injury mediated by oxidative stress. We suggest that chronic exposure to Plg could serve as a "second hit" in glomerular disease and that Plg is potentially an attractive target for therapeutic intervention.
Collapse
Affiliation(s)
- Leopoldo Raij
- Renal and Hypertension Division, University of Miami Miller School of Medicine, Miami, Florida; .,Nephrology and Hypertension Section Miami Veterans Affairs Medical Center (111C1), Miami, Florida; and
| | - Runxia Tian
- Nephrology and Hypertension Section Miami Veterans Affairs Medical Center (111C1), Miami, Florida; and
| | - Jenny S Wong
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - John C He
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Kirk N Campbell
- Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York
| |
Collapse
|
16
|
Lee YM, Han SI, Song BC, Yeum KJ. Bioactives in Commonly Consumed Cereal Grains: Implications for Oxidative Stress and Inflammation. J Med Food 2015; 18:1179-86. [DOI: 10.1089/jmf.2014.3394] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Affiliation(s)
- Yoon-Mi Lee
- Division of Food Bioscience, College of Biomedical and Health Sciences, Konkuk University, Chungju, Korea
| | - Sang-Ik Han
- National Institute of Crop Science, Rural Development Administration, Miryang, Korea
| | - Byeng Chun Song
- Division of Food Bioscience, College of Biomedical and Health Sciences, Konkuk University, Chungju, Korea
| | - Kyung-Jin Yeum
- Division of Food Bioscience, College of Biomedical and Health Sciences, Konkuk University, Chungju, Korea
| |
Collapse
|
17
|
Wang XX, Edelstein MH, Gafter U, Qiu L, Luo Y, Dobrinskikh E, Lucia S, Adorini L, D'Agati VD, Levi J, Rosenberg A, Kopp JB, Gius DR, Saleem MA, Levi M. G Protein-Coupled Bile Acid Receptor TGR5 Activation Inhibits Kidney Disease in Obesity and Diabetes. J Am Soc Nephrol 2015; 27:1362-78. [PMID: 26424786 DOI: 10.1681/asn.2014121271] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 08/12/2015] [Indexed: 12/31/2022] Open
Abstract
Obesity and diabetes mellitus are the leading causes of renal disease. In this study, we determined the regulation and role of the G protein-coupled bile acid receptor TGR5, previously shown to be regulated by high glucose and/or fatty acids, in obesity-related glomerulopathy (ORG) and diabetic nephropathy (DN). Treatment of diabetic db/db mice with the selective TGR5 agonist INT-777 decreased proteinuria, podocyte injury, mesangial expansion, fibrosis, and CD68 macrophage infiltration in the kidney. INT-777 also induced renal expression of master regulators of mitochondrial biogenesis, inhibitors of oxidative stress, and inducers of fatty acid β-oxidation, including sirtuin 1 (SIRT1), sirtuin 3 (SIRT3), and Nrf-1. Increased activity of SIRT3 was evidenced by normalization of the increased acetylation of mitochondrial superoxide dismutase 2 (SOD2) and isocitrate dehydrogenase 2 (IDH2) observed in untreated db/db mice. Accordingly, INT-777 decreased mitochondrial H2O2 generation and increased the activity of SOD2, which associated with decreased urinary levels of H2O2 and thiobarbituric acid reactive substances. Furthermore, INT-777 decreased renal lipid accumulation. INT-777 also prevented kidney disease in mice with diet-induced obesity. In human podocytes cultured with high glucose, INT-777 induced mitochondrial biogenesis, decreased oxidative stress, and increased fatty acid β-oxidation. Compared with normal kidney biopsy specimens, kidney specimens from patients with established ORG or DN expressed significantly less TGR5 mRNA, and levels inversely correlated with disease progression. Our results indicate that TGR5 activation induces mitochondrial biogenesis and prevents renal oxidative stress and lipid accumulation, establishing a role for TGR5 in inhibiting kidney disease in obesity and diabetes.
Collapse
Affiliation(s)
- Xiaoxin X Wang
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado;
| | - Michal Herman Edelstein
- Rabin Medical Center, Department of Nephrology and Hypertension; Felsenstein Medical Research Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Uzi Gafter
- Rabin Medical Center, Department of Nephrology and Hypertension; Felsenstein Medical Research Center, Sackler School of Medicine, Tel Aviv University, Israel
| | - Liru Qiu
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Yuhuan Luo
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Evgenia Dobrinskikh
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Scott Lucia
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | - Vivette D D'Agati
- Department of Pathology, Columbia University, College of Physicians and Surgeons, New York, New York
| | - Jonathan Levi
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Avi Rosenberg
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jeffrey B Kopp
- National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - David R Gius
- Northwestern University Feinberg School of Medicine, Chicago, Illinois; and
| | - Moin A Saleem
- University of Bristol, Southmead Hospital, Bristol, United Kingdom
| | - Moshe Levi
- Department of Medicine, Division of Renal Diseases and Hypertension, University of Colorado Anschutz Medical Campus, Aurora, Colorado;
| |
Collapse
|
18
|
Redox Signaling in Diabetic Nephropathy: Hypertrophy versus Death Choices in Mesangial Cells and Podocytes. Mediators Inflamm 2015; 2015:604208. [PMID: 26491232 PMCID: PMC4600552 DOI: 10.1155/2015/604208] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 01/18/2015] [Indexed: 02/06/2023] Open
Abstract
This review emphasizes the role of oxidative stress in diabetic nephropathy, acting as trigger, modulator, and linker within the complex network of pathologic events. It highlights key molecular pathways and new hypothesis in diabetic nephropathy, related to the interferences of metabolic, oxidative, and inflammatory stresses. Main topics this review is addressing are biomarkers of oxidative stress in diabetic nephropathy, the sources of reactive oxygen species (mitochondria, NADPH-oxidases, hyperglycemia, and inflammation), and the redox-sensitive signaling networks (protein kinases, transcription factors, and epigenetic regulators). Molecular switches deciding on the renal cells fate in diabetic nephropathy are presented, such as hypertrophy versus death choices in mesangial cells and podocytes. Finally, the antioxidant response of renal cells in diabetic nephropathy is tackled, with emphasis on targeted therapy. An integrative approach is needed for identifying key molecular networks which control cellular responses triggered by the array of stressors in diabetic nephropathy. This will foster the discovery of reliable biomarkers for early diagnosis and prognosis, and will guide the discovery of new therapeutic approaches for personalized medicine in diabetic nephropathy.
Collapse
|
19
|
Lindblom R, Higgins G, Coughlan M, de Haan JB. Targeting Mitochondria and Reactive Oxygen Species-Driven Pathogenesis in Diabetic Nephropathy. Rev Diabet Stud 2015; 12:134-56. [PMID: 26676666 DOI: 10.1900/rds.2015.12.134] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Diabetic kidney disease is one of the major microvascular complications of both type 1 and type 2 diabetes mellitus. Approximately 30% of patients with diabetes experience renal complications. Current clinical therapies can only mitigate the symptoms and delay the progression to end-stage renal disease, but not prevent or reverse it. Oxidative stress is an important player in the pathogenesis of diabetic nephropathy. The activity of reactive oxygen and nitrogen species (ROS/NS), which are by-products of the diabetic milieu, has been found to correlate with pathological changes observed in the diabetic kidney. However, many clinical studies have failed to establish that antioxidant therapy is renoprotective. The discovery that increased ROS/NS activity is linked to mitochondrial dysfunction, endoplasmic reticulum stress, inflammation, cellular senescence, and cell death calls for a refined approach to antioxidant therapy. It is becoming clear that mitochondria play a key role in the generation of ROS/NS and their consequences on the cellular pathways involved in apoptotic cell death in the diabetic kidney. Oxidative stress has also been associated with necrosis via induction of mitochondrial permeability transition. This review highlights the importance of mitochondria in regulating redox balance, modulating cellular responses to oxidative stress, and influencing cell death pathways in diabetic kidney disease. ROS/NS-mediated cellular dysfunction corresponds with progressive disease in the diabetic kidney, and consequently represents an important clinical target. Based on this consideration, this review also examines current therapeutic interventions to prevent ROS/NS-derived injury in the diabetic kidney. These interventions, mainly aimed at reducing or preventing mitochondrial-generated oxidative stress, improving mitochondrial antioxidant defense, and maintaining mitochondrial integrity, may deliver alternative approaches to halt or prevent diabetic kidney disease.
Collapse
Affiliation(s)
- Runa Lindblom
- Glycation, Nutrition and Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Gavin Higgins
- Glycation, Nutrition and Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Melinda Coughlan
- Glycation, Nutrition and Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Judy B de Haan
- Oxidative Stress Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, Australia
| |
Collapse
|
20
|
He T, Guan X, Wang S, Xiao T, Yang K, Xu X, Wang J, Zhao J. Resveratrol prevents high glucose-induced epithelial-mesenchymal transition in renal tubular epithelial cells by inhibiting NADPH oxidase/ROS/ERK pathway. Mol Cell Endocrinol 2015; 402:13-20. [PMID: 25540919 DOI: 10.1016/j.mce.2014.12.010] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Revised: 12/11/2014] [Accepted: 12/11/2014] [Indexed: 11/28/2022]
Abstract
Resveratrol (RSV) is reported to have renoprotective activity against diabetic nephropathy, while the mechanisms underlying its function have not been fully elucidated. In this study, we investigate the effect and related mechanism of RSV against high glucose-induced epithelial to mesenchymal transition (EMT) in human tubular epithelial cells (HK-2). A typical EMT is induced by high glucose in HK-2 cells, accompanied by increased levels of reactive oxygen species (ROS). RSV exhibits a strong ability to inhibit high glucose-induced EMT by decreasing intracellular ROS levels via down-regulation of NADPH oxidase subunits NOX1 and NOX4. The activation of extracellular signal-regulated kinase (ERK1/2) is found to be involved in high glucose-induced EMT in HK-2 cells. RSV, like NADPH oxidase inhibitor diphenyleneiodonium, can block ERK1/2 activation induced by high glucose. Our results demonstrate that RSV is a potent agent against high glucose-induced EMT in renal tubular cells via inhibition of NADPH oxidase/ROS/ERK1/2 pathway.
Collapse
Affiliation(s)
- Ting He
- Department of Nephrology, Institute of Nephrology of Chongqing and Kidney Center of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Xu Guan
- Department of Nephrology, Institute of Nephrology of Chongqing and Kidney Center of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Song Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury of PLA, Third Military Medical University, Chongqing 400038, China
| | - Tangli Xiao
- Department of Nephrology, Institute of Nephrology of Chongqing and Kidney Center of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Ke Yang
- Department of Nephrology, Institute of Nephrology of Chongqing and Kidney Center of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Xinli Xu
- Department of Nephrology, Institute of Nephrology of Chongqing and Kidney Center of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Junping Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Combined Injury of PLA, Third Military Medical University, Chongqing 400038, China
| | - Jinghong Zhao
- Department of Nephrology, Institute of Nephrology of Chongqing and Kidney Center of PLA, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| |
Collapse
|