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Duara J, Torres M, Gurumani M, Molina David J, Njeim R, Kim JJ, Mitrofanova A, Ge M, Sloan A, Müller-Deile J, Schiffer M, Merscher S, Fornoni A. Oxysterol-binding protein-like 7 deficiency leads to ER stress-mediated apoptosis in podocytes and proteinuria. Am J Physiol Renal Physiol 2024; 327:F340-F350. [PMID: 38961844 DOI: 10.1152/ajprenal.00319.2023] [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: 10/09/2023] [Revised: 06/21/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024] Open
Abstract
Chronic kidney disease (CKD) is associated with renal lipid dysmetabolism among a variety of other pathways. We recently demonstrated that oxysterol-binding protein-like 7 (OSBPL7) modulates the expression and function of ATP-binding cassette subfamily A member 1 (ABCA1) in podocytes, a specialized type of cell essential for kidney filtration. Drugs that target OSBPL7 lead to improved renal outcomes in several experimental models of CKD. However, the role of OSBPL7 in podocyte injury remains unclear. Using mouse models and cellular assays, we investigated the influence of OSBPL7 deficiency on podocytes. We demonstrated that reduced renal OSBPL7 levels as observed in two different models of experimental CKD are linked to increased podocyte apoptosis, primarily mediated by heightened endoplasmic reticulum (ER) stress. Although as expected, the absence of OSBPL7 also resulted in lipid dysregulation (increased lipid droplets and triglycerides content), OSBPL7 deficiency-related lipid dysmetabolism did not contribute to podocyte injury. Similarly, we demonstrated that the decreased autophagic flux we observed in OSBPL7-deficient podocytes was not the mechanistic link between OSBPL7 deficiency and apoptosis. In a complementary zebrafish model, osbpl7 knockdown was sufficient to induce proteinuria and morphological damage to the glomerulus, underscoring its physiological relevance. Our study sheds new light on the mechanistic link between OSBPL7 deficiency and podocyte injury in glomerular diseases associated with CKD, and it strengthens the role of OSBPL7 as a novel therapeutic target.NEW & NOTEWORTHY OSBPL7 and ER stress comprise a central mechanism in glomerular injury. This study highlights a crucial link between OSBPL7 deficiency and ER stress in CKD. OSBPL7 deficiency causes ER stress, leading to podocyte apoptosis. There is a selective effect on lipid homeostasis in that OSBPL7 deficiency affects lipid homeostasis, altering cellular triglyceride but not cholesterol content. The interaction of ER stress and apoptosis supports that ER stress, not reduced autophagy, is the main driver of apoptosis in OSBPL7-deficient podocytes.
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Affiliation(s)
- Joanne Duara
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Department of Pediatrics/Division of Neonatology, Batchelor Children's Research Institute, Holtz Children's Hospital, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Maria Torres
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Boston University, Boston, Massachusetts, United States
| | - Margaret Gurumani
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Boston University, Boston, Massachusetts, United States
| | - Judith Molina David
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Rachel Njeim
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Jin-Ju Kim
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Alla Mitrofanova
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Mengyuan Ge
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Alexis Sloan
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Janina Müller-Deile
- Department of Nephrology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Mario Schiffer
- Department of Nephrology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
- Mount Desert Island Biological Laboratories, Salisbury Cove, Maine, United States
| | - Sandra Merscher
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
| | - Alessia Fornoni
- Peggy and Harold Katz Family Drug Discovery Center, University of Miami Miller School of Medicine, Miami, Florida, United States
- Katz Family Division of Nephrology and Hypertension, Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States
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Shakour N, Karami S, Iranshahi M, Butler AE, Sahebkar A. Antifibrotic effects of sodium-glucose cotransporter-2 inhibitors: A comprehensive review. Diabetes Metab Syndr 2024; 18:102934. [PMID: 38154403 DOI: 10.1016/j.dsx.2023.102934] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/25/2023] [Accepted: 12/20/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND AND AIMS Scar tissue accumulation in organs is the underlying cause of many fibrotic diseases. Due to the extensive array of organs affected, the long-term nature of fibrotic processes and the large number of people who suffer from the negative impact of these diseases, they constitute a serious health problem for modern medicine and a huge economic burden on society. Sodium-glucose cotransporter-2 inhibitors (SGLT2is) are a relatively new class of anti-diabetic pharmaceuticals that offer additional benefits over and above their glucose-lowering properties; these medications modulate a variety of diseases, including fibrosis. Herein, we have collated and analyzed all available research on SGLT2is and their effects on organ fibrosis, together with providing a proposed explanation as to the underlying mechanisms. METHODS PubMed, ScienceDirect, Google Scholar and Scopus were searched spanning the period from 2012 until April 2023 to find relevant articles describing the antifibrotic effects of SGLT2is. RESULTS The majority of reports have shown that SGLT2is are protective against lung, liver, heart and kidney fibrosis as well as arterial stiffness. According to the results of clinical trials and animal studies, many SGLT2 inhibitors are promising candidates for the treatment of fibrosis. Recent studies have demonstrated that SGLT2is affect an array of cellular processes, including hypoxia, inflammation, oxidative stress, the renin-angiotensin system and metabolic activities, all of which have been linked to fibrosis. CONCLUSION Extensive evidence indicates that SGLT2is are promising treatments for fibrosis, demonstrating protective effects in various organs and influencing key cellular processes linked to fibrosis.
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Affiliation(s)
- Neda Shakour
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Shima Karami
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alexandra E Butler
- Research Department, Royal College of Surgeons in Ireland, Adliya, Bahrain
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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Kale A, Shelke V, Habshi T, Dagar N, Gaikwad AB. ER stress modulated Klotho restoration: A prophylactic therapeutic strategy against acute kidney injury-diabetes comorbidity. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166905. [PMID: 37793463 DOI: 10.1016/j.bbadis.2023.166905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/10/2023] [Accepted: 09/27/2023] [Indexed: 10/06/2023]
Abstract
Klotho is a renoprotective factor that is at the forefront of research as a potential therapeutic agent and biomarker of acute kidney injury (AKI). Endoplasmic reticulum (ER) stress and Klotho downregulation are the critical hallmarks of AKI progression. Importantly, the crosstalk between ER and Klotho is still elusive in AKI under diabetic condition. Therefore, this study aimed to elucidate the affiliation between ER stress and Klotho regulation by using the ischemia-reperfusion renal injury (IRI) model based on male Wistar rats and the hypoxia-reperfusion injury (HRI) using NRK52E cells. Study outcomes demonstrated that the expression of AKI biomarkers: plasma creatinine, neutrophil gelatinase-associated lipocalin, kidney-injury molecule 1, and ER stress markers such as binding immunoglobulin binding protein (BiP), R/PKR-like ER kinase (PERK), and eukaryotic initiation factor-2 (eIF2α), were observed during AKI. Increased ER stress was associated with apoptosis induction as depicted by increased levels of Poly (ADP-ribose) polymerase (PARP) and caspase-7 and decreased tubular Klotho expression. Under diabetic settings, ER stress and apoptosis were exacerbated by additional Klotho downregulation. Treatment with Tauroursodeoxycholic acid (TUDCA) inhibited the ER stress, apoptosis, restored endogenous Klotho levels and ameliorated AKI under diabetic and non-diabetic conditions. ER stress and Klotho appear to be shared factors involved in the pathogenesis of AKI-diabetes comorbidity and targeting them could prove a novel therapeutic approach.
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Affiliation(s)
- Ajinath Kale
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Vishwadeep Shelke
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Tahib Habshi
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Neha Dagar
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Anil Bhanudas Gaikwad
- Laboratory of Molecular Pharmacology, Department of Pharmacy, Birla Institute of Technology and Science, Pilani Campus, Pilani, Rajasthan 333031, India.
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Cao Z, Gao X, Meng J, Guo X, Xu J, Cui J, Zhou X. ACSL1: A preliminary study that provides a new target for the treatment of renal fibrosis could bring new insights in diabetic kidney disease. Nefrologia 2023; 43 Suppl 2:38-46. [PMID: 38245444 DOI: 10.1016/j.nefroe.2023.05.008] [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: 10/07/2022] [Accepted: 02/20/2023] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Renal fibrosis is the main cause of the development of diabetic kidney disease (DKD). ACSL1 plays an important role in colon cancer and liver fibrosis. METHODS We screened ACSL1 by proteomics analysis and then verified the expression of ACSL1 in the urine of diabetic nephropathy patients by WB and ELISA. Then, a total of 12db/m and db/db mice were used to verify the association between renal fibrosis and ACSL1. Periodic acid-Schiff (PAS) staining, Masson staining, and immunostaining were performed for histological studies. The relationship between ACSL1 and renal fibrosis was studied by knocking down ACSL1 in cell experiments. RESULTS The expression of ACSL1 was significantly increased in the exfoliated urine cells and urine supernatant of diabetic nephropathy patients and was closely related to renal function. In addition, the expression of ACSL1 was significantly increased in the renal tissues of db/db mice with fibrosis. Knocking down ACSL1 in HK-2 cells was shown to reverse renal fibrosis induced by high glucose. CONCLUSIONS We found a potential therapeutic target for preventing or ameliorating the progression of DKD fibrosis. Reducing ACSL1 expression may be a new strategy for the treatment of renal fibrosis caused by DKD, which provides an experimental theoretical basis for new drug research.
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Affiliation(s)
- Zhonghui Cao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmacy, Affiliated Hospital of Xuzhou Medical University, Xuzhou 221004, China
| | - Xiao Gao
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Jing Meng
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Xiaoli Guo
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Jiahao Xu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Junchao Cui
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Xueyan Zhou
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, College of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China.
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Younis D, Mosbah A, Zakaria MM, Awadalla A, El-Kannishy G, Shemies RS. Urinary congophilia in pregnancy: a marker of kidney injury rather than preeclampsia. J Hypertens 2023; 41:1760-1767. [PMID: 37602468 DOI: 10.1097/hjh.0000000000003531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
BACKGROUND The differentiation between preeclampsia and similarly presenting kidney disease in pregnancy is a diagnostic challenge. Although some laboratory tests have been utilized, globally validated tools are yet needed, particularly in resource-limited settings. Congophilic proteins are abundantly detected in the urine of pregnant women who develop preeclampsia that is thought to be a marker of disease process. The present study aimed to assess the diagnostic and predictive utility of urinary congophilia in pregnant women with hypertensive disorders of pregnancy as well as kidney diseases. METHODS This cohort study included 157 pregnant women, classified as healthy controls ( n = 38), preeclampsia/eclampsia ( n = 45), gestational hypertension ( n = 9), chronic hypertension ( n = 8), chronic kidney disease (CKD) ( n = 27), and pregnancy-related acute kidney injury (PR-AKI) ( n = 30). Urinary congophilia was assessed by Congo Red Dot Blot assay. RESULTS Congo red retention (CRR) values were significantly higher in women with preeclampsia/eclampsia ( P ≤ 0.001), chronic hypertension ( P = 0.029), gestational hypertension ( P = 0.017), CKD ( P ≤ 0.001), PR-AKI secondary to preeclampsia ( P ≤ 0.001), and PR-AKI secondary to other causes ( P = 0.001), compared with healthy controls. Women with preeclampsia, CKD, and PR-AKI (non-preeclampsia related) exhibited the highest levels of CRR. CRR positively correlated to proteinuria ( P = 0.006) and serum creatinine ( P = 0.027). CRR did not significantly vary between women who presented antepartum and those presented postpartum after removal of the placenta ( P = 0.707). CRR at a cut-off point of at least 1.272 had 91% specificity and 61.1% sensitivity in predicting renal recovery in PR-AKI patients. CRR had a poor specificity in discriminating preeclampsia from the other clinical presentations. CONCLUSION Urinary congophilia could not discriminate preeclampsia from similarly presenting kidney diseases in pregnancy. Further studies are needed to improve differentiation of these conditions.
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Affiliation(s)
| | | | - Mahmoud M Zakaria
- Clinical Pathology Department, Mansoura Urology and Nephrology Center, Mansoura University, Mansoura City, Egypt
| | - Amira Awadalla
- Clinical Pathology Department, Mansoura Urology and Nephrology Center, Mansoura University, Mansoura City, Egypt
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Deng F, Zhang H, Zhou W, Ma S, Kang Y, Yang W, Zhao L, Qin W. TRPA1 promotes cisplatin-induced acute kidney injury via regulating the endoplasmic reticulum stress-mitochondrial damage. J Transl Med 2023; 21:695. [PMID: 37798747 PMCID: PMC10557178 DOI: 10.1186/s12967-023-04351-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 07/11/2023] [Indexed: 10/07/2023] Open
Abstract
BACKGROUND Cisplatin is a widely used and effective chemotherapeutic agent against cancer. However, nephrotoxicity is one of the most common side effects of cisplatin, and it can proceed to acute kidney injury (AKI). Studies have reported that activation of transient receptor potential ankyrin-1 (TRPA1) mediates cisplatin-induced renal tubular cytotoxic injury. The aim of this study was to investigate the mechanism of TRPA1 in promoting cisplatin-induced AKI through modulation of the endoplasmic reticulum stress (ERS)-mitochondrial damage. METHODS A cisplatin-induced HK-2 cell model in vitro and mouse model in vivo were established. The mechanism of TRPA1 promotes AKI was elucidated by H&E staining, TUNEL staining, transmission electron microscope (TEM), immunofluorescence, CCK-8 viability assays, flow cytometry, Western blotting, JC-1 assay, and enzyme linked immunosorbent assay (ELISA). RESULT In vivo and in vitro, HC-030031 reduced cisplatin-induced Scr and BUN level elevations; improved cisplatin-induced renal tissue injury, apoptosis, and mitochondrial dysfunction; elevated the reduced ERS-associated proteins glucose-regulated protein 78 (GRP78), glucose-regulated protein 75 (GRP75), and C/EBP homologous protein (CHOP) levels induced by cisplatin; reduced the elevated optic atrophy 1 (OPA1), mito-fusion 1 (MFN1), and mito-fusion 2 (MFN2) protein levels, and elevated phospho-dynamin-related protein 1 (p-DRP1) and mitochondrial fission factor (MFF) protein levels. HC-030031 also reduced the mitochondria-associated endoplasmic reticulum membrane (MAM) structure. In addition, TRPA1 agonists also decreased cell proliferation, increased apoptosis, and triggered mitochondrial dysfunction and calcium overload in HK-2 cells via modulation of MAM. ERS inhibitors and GRP75 inhibitors reversed these changes caused by TRPA1 agonists. CONCLUSION Our findings suggest that TRPA1 enhances cisplatin-induced AKI via modulation of ERS and mitochondrial damage.
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Affiliation(s)
- Fei Deng
- Department of Nephrology, West China Hospital, Sichuan University, 37 Guoxue Alley, Wuhou District, Chengdu, 610044, China
- Department of Nephrology, Sichuan Provincial People's Hospital Jinniu Hospital, Chengdu Jinniu District People's Hospital, Chengdu, China
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Heping Zhang
- Department of Nephrology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Wei Zhou
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Shijie Ma
- Department of Nephrology, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Yuwei Kang
- Department of Nephrology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Wei Yang
- Department of Nephrology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Liangbin Zhao
- Department of Nephrology, Hospital of Chengdu University of Traditional Chinese Medicine, 39 Shierqiao Road, Jinniu District, Chengdu, 610072, China.
| | - Wei Qin
- Department of Nephrology, West China Hospital, Sichuan University, 37 Guoxue Alley, Wuhou District, Chengdu, 610044, China.
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Chali SEN, Khanbabaei R, Juybari AAD, Fatahi E, Kalai RB. Coenzyme Q10 treatment and diazinon exposure in parental male rats: effects of the exposure on their neonatal brains. Toxicol Res (Camb) 2023; 12:264-269. [PMID: 37125340 PMCID: PMC10141774 DOI: 10.1093/toxres/tfad012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/23/2022] [Accepted: 01/26/2023] [Indexed: 03/14/2023] Open
Abstract
Prenatal acute and chronic exposure to organophosphorus pesticides may evoke physical and behavioral impairments in offspring development. However, the mechanism of antioxidant consumption repair to cure these impairments remains unclear. This study aimed to investigate the protective effects of COQ10 against DZN toxicity by measuring Malondialdehyde (MDA) level, superoxide dismutase (SOD) activity, the expression of MH2A, DNMT1, H2AZ, and HDAC3, and the histopathology in the brain of neonatal Wistar albino rats whose male parents were exposed to DZN and COQ10. The results showed that COQ10 could significantly decrease MDA level, histopathological alteration, and expression of DNMT1 and HDAC3 in the neonatal brain (P < 0.05). Also, an increase in SOD activity and expression of MH2A and H2AZ were observed in the neonatal brain of this group (P < 0.05). These investigations suggest that COQ10 can reduce the effects of DZN on neuronal oxidative stress and its damage to the neonatal brain.
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Affiliation(s)
- Sima Ebadi Naft Chali
- Department of Biology, Qaemshahr Branch, Islamic Azad University, Qaemshahr 3149968111, Iran
| | - Ramzan Khanbabaei
- Department of Biology, Qaemshahr Branch, Islamic Azad University, Qaemshahr 3149968111, Iran
| | | | - Esmail Fatahi
- Department of Biology, Qaemshahr Branch, Islamic Azad University, Qaemshahr 3149968111, Iran
| | - Roya Bisheh Kalai
- Department of Biology, Qaemshahr Branch, Islamic Azad University, Qaemshahr 3149968111, Iran
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Liu B, Zhang L, Yang H, Chen X, Zheng H, Liao X. SIK2 protects against renal tubular injury and the progression of diabetic kidney disease. Transl Res 2023; 253:16-30. [PMID: 36075517 DOI: 10.1016/j.trsl.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 02/03/2023]
Abstract
Despite optimal medical therapy, many patients with diabetic kidney disease (DKD) progress to end-stage renal disease. The identification of new biomarkers and drug targets for DKD is required for the development of more effective therapies. The apoptosis of renal tubular epithelial cells is a key feature of the pathogenicity associated with DKD. SIK2, a salt-inducible kinase, regulates important biological processes, such as energy metabolism, cell cycle progression and cellular apoptosis. In our current study, a notable decrease in the expression of SIK2 was detected in the renal tubules of DKD patients and murine models. Functional experiments demonstrated that deficiency or inactivity of SIK2 aggravates tubular injury and interstitial fibrosis in diabetic mice. Based on transcriptome sequencing, molecular mechanism exploration revealed that SIK2 overexpression reduces endoplasmic reticulum (ER) stress-mediated tubular epithelial apoptosis by inhibiting the histone acetyltransferase activity of p300 to activate HSF1/Hsp70. Furthermore, the specific restoration of SIK2 in tubules blunts tubular and interstitial impairments in diabetic and vancomycin-induced kidney disease mice. Together, these findings indicate that SIK2 protects against renal tubular injury and the progression of kidney disease, and make a compelling case for targeting SIK2 for therapy in DKD.
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Affiliation(s)
- Bingyao Liu
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Linlin Zhang
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Hang Yang
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Xinyu Chen
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, China
| | - Hongting Zheng
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China.
| | - Xiaoyu Liao
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China.
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Melis N, Rubera I, Giraud S, Cougnon M, Duranton C, Poet M, Jarretou G, Thuillier R, Counillon L, Hauet T, Pellerin L, Tauc M, Pisani DF. Renal Ischemia Tolerance Mediated by eIF5A Hypusination Inhibition Is Regulated by a Specific Modulation of the Endoplasmic Reticulum Stress. Cells 2023; 12:cells12030409. [PMID: 36766751 PMCID: PMC9913814 DOI: 10.3390/cells12030409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/18/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023] Open
Abstract
Through kidney transplantation, ischemia/reperfusion is known to induce tissular injury due to cell energy shortage, oxidative stress, and endoplasmic reticulum (ER) stress. ER stress stems from an accumulation of unfolded or misfolded proteins in the lumen of ER, resulting in the unfolded protein response (UPR). Adaptive UPR pathways can either restore protein homeostasis or can turn into a stress pathway leading to apoptosis. We have demonstrated that N1-guanyl-1,7-diamineoheptane (GC7), a specific inhibitor of eukaryotic Initiation Factor 5A (eIF5A) hypusination, confers an ischemic protection of kidney cells by tuning their metabolism and decreasing oxidative stress, but its role on ER stress was unknown. To explore this, we used kidney cells pretreated with GC7 and submitted to either warm or cold anoxia. GC7 pretreatment promoted cell survival in an anoxic environment concomitantly to an increase in xbp1 splicing and BiP level while eiF2α phosphorylation and ATF6 nuclear level decreased. These demonstrated a specific modulation of UPR pathways. Interestingly, the pharmacological inhibition of xbp1 splicing reversed the protective effect of GC7 against anoxia. Our results demonstrated that eIF5A hypusination inhibition modulates distinctive UPR pathways, a crucial mechanism for the protection against anoxia/reoxygenation.
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Affiliation(s)
- Nicolas Melis
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Isabelle Rubera
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Sebastien Giraud
- INSERM U1313, IRMETIST, Université de Poitiers et CHU de Poitiers, 86000 Poitiers, France
| | - Marc Cougnon
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Christophe Duranton
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Mallorie Poet
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Gisèle Jarretou
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Raphaël Thuillier
- INSERM U1313, IRMETIST, Université de Poitiers et CHU de Poitiers, 86000 Poitiers, France
| | - Laurent Counillon
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Thierry Hauet
- INSERM U1313, IRMETIST, Université de Poitiers et CHU de Poitiers, 86000 Poitiers, France
| | - Luc Pellerin
- INSERM U1313, IRMETIST, Université de Poitiers et CHU de Poitiers, 86000 Poitiers, France
| | - Michel Tauc
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
| | - Didier F. Pisani
- Université Côte d’Azur, CNRS, LP2M, 06108 Nice, France
- Laboratories of Excellence Ion Channel Science and Therapeutics, 06103 Nice, France
- Correspondence:
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10
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Bai Y, Li Y, Tang Z, Hu L, Jiang X, Chen J, Huang S, Wu K, Xu W, Chen C. Urinary proteome analysis of acute kidney injury in post-cardiac surgery patients using enrichment materials with high-resolution mass spectrometry. Front Bioeng Biotechnol 2022; 10:1002853. [PMID: 36177176 PMCID: PMC9513377 DOI: 10.3389/fbioe.2022.1002853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022] Open
Abstract
Background: Cardiac surgery-associated acute kidney injury (CSA-AKI) may increase the mortality and incidence rates of chronic kidney disease in critically ill patients. This study aimed to investigate the underlying correlations between urinary proteomic changes and CSA-AKI. Methods: Nontargeted proteomics was performed using nano liquid chromatography coupled with Orbitrap Exploris mass spectrometry (MS) on urinary samples preoperatively and postoperatively collected from patients with CSA-AKI. Gemini C18 silica microspheres were used to separate and enrich trypsin-hydrolysed peptides under basic mobile phase conditions. Differential analysis was conducted to screen out urinary differential expressed proteins (DEPs) among patients with CSA-AKI for bioinformatics. Kyoto Encyclopedia of Genes and Genomes (KEGG) database analysis was adopted to identify the altered signal pathways associated with CSA-AKI. Results: Approximately 2000 urinary proteins were identified and quantified through data-independent acquisition MS, and 324 DEPs associated with AKI were screened by univariate statistics. According to KEGG enrichment analysis, the signal pathway of protein processing in the endoplasmic reticulum was enriched as the most up-regulated DEPs, and cell adhesion molecules were enriched as the most down-regulated DEPs. In protein–protein interaction analysis, the three hub targets in the up-regulated DEPs were α-1-antitrypsin, β-2-microglobulin and angiotensinogen, and the three key down-regulated DEPs were growth arrest-specific protein 6, matrix metalloproteinase-9 and urokinase-type plasminogen activator. Conclusion: Urinary protein disorder was observed in CSA-AKI due to ischaemia and reperfusion. The application of Gemini C18 silica microspheres can improve the protein identification rate to obtain highly valuable resources for the urinary DEPs of AKI. This work provides valuable knowledge about urinary proteome biomarkers and essential resources for further research on AKI.
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Affiliation(s)
- Yunpeng Bai
- Center of Scientific Research, Maoming People’s Hospital, Maoming, China
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, China
| | - Ying Li
- Department of Intensive Care Unit of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Zhizhong Tang
- Department of Urology, Maoming People’s Hospital, Maoming, China
| | - Linhui Hu
- Department of Critical Care Medicine, Maoming People’s Hospital, Maoming, China
| | - Xinyi Jiang
- Department of Intensive Care Unit of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- School of Medicine, South China University of Technology, Guangzhou, China
| | - Jingchun Chen
- Department of Intensive Care Unit of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- School of Medicine, South China University of Technology, Guangzhou, China
| | - Sumei Huang
- Center of Scientific Research, Maoming People’s Hospital, Maoming, China
- Department of Emergency, Maoming People’s Hospital, Maoming, China
- Biological Resource Center of Maoming People’s Hospital, Maoming, China
| | - Kunyong Wu
- Center of Scientific Research, Maoming People’s Hospital, Maoming, China
- Biological Resource Center of Maoming People’s Hospital, Maoming, China
| | - Wang Xu
- Department of Intensive Care Unit of Cardiovascular Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Critical Care Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Chunbo Chen
- Department of Emergency, Maoming People’s Hospital, Maoming, China
- Department of Critical Care Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Renal Failure Research, Southern Medical University, Guangzhou, China
- *Correspondence: Chunbo Chen, , orcid.org/0000-0001-5662-497X
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11
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Filler G, Sharma AP. Impaired kidney function >90 days determines long-term kidney outcomes. Pediatr Transplant 2022; 26:e14301. [PMID: 35503743 DOI: 10.1111/petr.14301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Guido Filler
- Department of Paediatrics and Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,Department of Medicine and Pathology and Laboratory Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada.,The Lilibeth Caberto Kidney Clinical Research Unit, Western University, London, Ontario, Canada
| | - Ajay P Sharma
- Department of Paediatrics and Medicine, Schulich School of Medicine & Dentistry, University of Western Ontario, London, Ontario, Canada
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12
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He T, Wang Q, Ao J, Chen K, Li X, Zhang J, Duan C. Endoplasmic reticulum stress contributes to autophagy and apoptosis in cantharidin-induced nephrotoxicity. Food Chem Toxicol 2022; 163:112986. [PMID: 35398186 DOI: 10.1016/j.fct.2022.112986] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/22/2022] [Accepted: 04/01/2022] [Indexed: 10/18/2022]
Abstract
Mylabris, as a natural product of traditional Chinese medicine (TCM), exhibiting typical antitumor activity, and cantharidin (CTD) is the major bioactive component. However, drug-induced nephrotoxicity (DIN) extremely limited its clinical application. In this study, we proved that activation of the endoplasmic reticulum (ER) stress-dependent PERK/CHOP pathway exerts a toxic role in rats and HK-2 cells through inducing autophagy and apoptosis. Results showed that CTD could cause renal function damage, cytotoxicity, and apoptosis. The ER dilatation and autolysosomes were observed after CTD treatment. Furthermore, the distribution of LC3, ATF4, and CHOP proteins was observed in the nucleus and cytoplasm. In addition, the mRNA levels of ER stress-regulated genes (PERK, eIF2α, CHOP, and ATF4) were increased, and the expression levels of GRP78, ATF4, CHOP, LC3, Beclin-1, Atg3, Atg7, Caspase 3, and Bax/Bcl-2 proteins were increased both in vitro and in vivo. Consistently, this upregulation could be inhibited by an ER stress inhibitor 4-Phenylbutyric acid (4-PBA), indicating that ER stress is partly responsible for activation of autophagy and apoptosis in CTD-induced DIN. In conclusion, CTD could induce DIN by triggering ER stress, further activating autophagy and apoptosis both in vivo and in vitro.
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Affiliation(s)
- Tianmu He
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi, 563000, China; School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, China
| | - Qiyi Wang
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
| | - Jingwen Ao
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
| | - Kuan Chen
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China
| | - Xiaofei Li
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi, 563000, China; School of Basic Medical Sciences, Guizhou Medical University, Guiyang, 550025, China
| | - Jianyong Zhang
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China.
| | - Cancan Duan
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, China.
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13
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Azouz AA, Hersi F, Ali FEM, Hussein Elkelawy AMM, Omar HA. Renoprotective effect of vinpocetine against ischemia/reperfusion injury: Modulation of NADPH oxidase/Nrf2, IKKβ/NF-κB p65, and cleaved caspase-3 expressions. J Biochem Mol Toxicol 2022; 36:e23046. [PMID: 35315168 DOI: 10.1002/jbt.23046] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 01/14/2022] [Accepted: 03/02/2022] [Indexed: 11/08/2022]
Abstract
Ischemia/reperfusion injury (IRI) during kidney transplantation is a serious clinical problem with a high mortality rate and a lack of therapy. Therefore, there is a need to improve the ability of the kidney to tolerate IRI during transplantation. This study aimed to investigate the possible protective effect of vinpocetine; a derivative of vincamine alkaloid; against renal IRI in rats with the elucidation of the involved mechanisms. Vinpocetine (25 mg/kg; i.p.) was administered for 10 successive days before the induction of ischemia by bilateral clamping of both renal pedicles for 45 min followed by 24 h of reperfusion. Blood and renal tissue samples were then collected for biochemical, molecular, and histopathological investigations. Vinpocetine significantly reduced serum creatinine and blood urea nitrogen levels in rats subjected to IRI. It also reduced mRNA expression of NADPH oxidase and renal content of malondialdehyde, while enhanced Nrf2 protein expression and renal content of reduced glutathione. The suppression of the provoked inflammatory response was evident by the downregulation of IKKβ and NF-κB p65 protein expressions, as well as their downstream inflammatory markers; tumor necrosis factor-α, interleukin-6, and myeloperoxidase. In addition, vinpocetine reduced protein expression of the apoptotic executioner cleaved caspase-3. These nephroprotective effects were confirmed by the improvement in histopathological features. Collectively, the protective effect of vinpocetine against IRI could be attributed to modulation of NADPH oxidase/Nrf2, IKKβ/NF-κB p65, and cleaved caspase-3 expressions. Thus, vinpocetine could improve oxidant/antioxidant balance, suppress triggered inflammatory response, and promote renal cell survival after IRI.
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Affiliation(s)
- Amany A Azouz
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Fatema Hersi
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE
| | - Fares E M Ali
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt
| | | | - Hany A Omar
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.,Sharjah Institute for Medical Research, University of Sharjah, Sharjah, UAE
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14
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Recent Advances in Diabetic Kidney Diseases: From Kidney Injury to Kidney Fibrosis. Int J Mol Sci 2021; 22:ijms222111857. [PMID: 34769288 PMCID: PMC8584225 DOI: 10.3390/ijms222111857] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/08/2021] [Accepted: 10/30/2021] [Indexed: 12/14/2022] Open
Abstract
Diabetic kidney disease (DKD) is the leading cause of chronic kidney disease and end-stage renal disease. The natural history of DKD includes glomerular hyperfiltration, progressive albuminuria, declining estimated glomerular filtration rate, and, ultimately, kidney failure. It is known that DKD is associated with metabolic changes caused by hyperglycemia, resulting in glomerular hypertrophy, glomerulosclerosis, and tubulointerstitial inflammation and fibrosis. Hyperglycemia is also known to cause programmed epigenetic modification. However, the detailed mechanisms involved in the onset and progression of DKD remain elusive. In this review, we discuss recent advances regarding the pathogenic mechanisms involved in DKD.
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15
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Zhang M, Yuan J, Dong R, Da J, Li Q, Hu Y, Yu F, Ran Y, Zha Y, Long Y. Hyperhomocysteinemia exacerbates ischemia-reperfusion injury-induced acute kidney injury by mediating oxidative stress, DNA damage, JNK pathway, and apoptosis. Open Life Sci 2021; 16:537-543. [PMID: 34124373 PMCID: PMC8165256 DOI: 10.1515/biol-2021-0054] [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: 11/09/2020] [Revised: 04/01/2021] [Accepted: 04/22/2021] [Indexed: 11/15/2022] Open
Abstract
Background Hyperhomocysteinemia (HHcy) plays an important role in the progression of many kidney diseases; however, the relationship between HHcy and ischemia-reperfusion injury (IRI)-induced acute kidney injury (IRI-induced AKI) is far from clear. In this study, we try to investigate the effect and possible mechanisms of HHcy on IRI-induced AKI. Methods Twenty C57/BL6 mice were reared with a regular diet or high methionine diet for 2 weeks (to generate HHcy mice); after that, mice were subgrouped to receive sham operation or ischemia-reperfusion surgery. Twenty four hour after reperfusion, serum creatinine, blood urea nitrogen, and Malondialdehyde (MDA) were measured. H&E staining for tubular injury, western blot for γH2AX, JNK, p-JNK, and cleaved caspase 3, and TUNEL assay for tubular cell apoptosis were also performed. Results Our results showed that HHcy did not influence the renal function and histological structure, as well as the levels of MDA, γH2AX, JNK, p-JNK, and tubular cell apoptosis in control mice. However, in IRI-induced AKI mice, HHcy caused severer renal dysfunction and tubular injury, higher levels of oxidative stress, DNA damage, JNK pathway activation, and tubular cell apoptosis. Conclusion Our results demonstrated that HHcy could exacerbate IRI-induced AKI, which may be achieved through promoting oxidative stress, DNA damage, JNK pathway activation, and consequent apoptosis.
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Affiliation(s)
- Mei Zhang
- Department of Biomedicine, Guizhou University School of Medicine, Guizhou University, Guiyang 550025, Guizhou, People's Republic of China
| | - Jing Yuan
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Rong Dong
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Jingjing Da
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Qian Li
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Ying Hu
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Fangfang Yu
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Yan Ran
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Yan Zha
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
| | - Yanjun Long
- Division of Nephrology, Guizhou Provincial People's Hospital, Guizhou Provincial Institute of Nephritic & Urinary Disease, No. 83 East ZhongShan Road, Guiyang 550002, Guizhou, People's Republic of China
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16
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Protective Effects of Astragalus Polysaccharide on Sepsis-Induced Acute Kidney Injury. ACTA ACUST UNITED AC 2021; 2021:7178253. [PMID: 33575163 PMCID: PMC7857912 DOI: 10.1155/2021/7178253] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 01/06/2021] [Accepted: 01/12/2021] [Indexed: 12/19/2022]
Abstract
Objective To explore the protective roles of Astragalus polysaccharide (APS) on acute renal injury (AKI) induced by sepsis. Methods Firstly, an animal model of sepsis-induced AKI was established by injecting lipopolysaccharide (LPS) into mice. The mice were pretreated with an intraperitoneal injection of 1, 3, and 5 mg/(kg·d) APS for 3 consecutive days. The severity of kidney injury was then scored by histopathological analysis, and the concentrations of serum urea nitrogen (BUN) and serum creatinine (SCr) and the levels of tumor necrosis factor α (TNF-α) and interleukin-1β (IL-1β) were determined as well. In in vitro experiments, lipopolysaccharide (LPS) was used to induce HK-2 cell injury to establish a sepsis-induced AKI cell model, and the cell counting kit-8 (CCK-8) method was performed to determine the cytotoxicity and appropriate experimental concentration of APS. Then, cells were divided into the control, LPS, and APS+LPS groups. Cell apoptosis and inflammation-related TNF-α, IL-1β, IL-6, and IL-8 were determined by flow cytometry and enzyme-linked immunosorbent assay (ELISA), respectively. The microscope was used to observe the morphological changes of cells, and the cell migration ability was measured by wound healing assay. RT-qPCR and Western blot assay were used to determine the mRNA and protein levels of apoptosis-related factors including caspase-3, caspase-9, Bax, and Bcl-2; endoplasmic reticulum stress- (ERS-) related biomarkers including C/EBP homologous protein (CHOP) and glucose-regulated protein78 (GRP78); and epithelial-mesenchymal transition- (EMT-) related biomarkers including E-cadherin, Snail, α-smooth muscle actin (α-SMΑ), and Vimentin. Results In vivo experiments in mice showed that APS can reverse LPS-induced kidney damage in a concentration-dependent manner (P < 0.05); the concentrations of BUN and Scr were increased (all P < 0.05); similarly, the levels of TNF-α and IL-1β were increased as well (all P < 0.05). In in vitro experiments, the results showed that LPS can significantly cause HK-2 cell damage and induce apoptosis, inflammation, ERS, and EMT. When APS concentration was in the range of 0-200 μg/mL, it had no cytotoxicity in HK-2 cells, and 100 μg/mL APS pretreatment could significantly mitigate the decrease of cell activity induced by LPS (P < 0.05). Compared with the LPS group, APS pretreatment could inhibit the expression of inflammatory factors including TNF-α, IL-1 β, IL-6, and IL-8 (all P < 0.05), reducing the number of apoptotic cells (P < 0.05), suppressing the expression of caspase-3, caspase-9, and Bax, but upregulating the expression levels of Bcl-2. In ERS, APS pretreatment inhibited LPS-induced upregulation of CHOP and GRP78. Moreover, in EMT, APS pretreatment could inhibit the morphological changes of cells, downregulate the migration, decrease the expression of EMT biomarkers, and inhibit the process of EMT. Conclusion APS could alleviate sepsis-induced AKI by regulating inflammation, apoptosis, ERS, and EMT.
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17
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Zhao L, Li C, Guan C, Song N, Luan H, Luo C, Jiang W, Bu Q, Wang Y, Che L, Xu Y. Serum response factor, a novel early diagnostic biomarker of acute kidney injury. Aging (Albany NY) 2021; 13:2885-2894. [PMID: 33406503 PMCID: PMC7880358 DOI: 10.18632/aging.202381] [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: 06/15/2020] [Accepted: 10/31/2020] [Indexed: 12/29/2022]
Abstract
Objective: Studies have shown that serum response factor (SRF) is increased in chronic kidney injury, such as diabetic nephropathy, hyperuricemic nephropathy and renal cell carcinoma. The objective is to explore the early diagnostic value of SRF in acute kidney injury (AKI). Methods: AKI-related microarray data were analyzed, and the expression and location of SRF were investigated in the early phase of AKI. Results: Bioinformatics results demonstrated that SRF was dramatically elevated 2-4 h after ischemia/reperfusion (I/R) in mouse renal tissue. In I/R rats, SRF was mostly expressed and located in renal tubular epithelial cells (TECs). SRF started to increase at 1 h, peaked at 3-9 h and started to decrease at 12 h after I/R. The areas under the ROC curve of renal SRF mRNA, renal SRF protein, urinary SRF, serum SRF and serum creatinine (Scr) were 87.9%, 83.0%, 81.3%, 78.8%, 68.8%, respectively. Conclusion: SRF is remarkably upregulated in early (before 24 h) AKI and can replace Scr as a potential new early diagnostic biomarker of AKI.
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Affiliation(s)
- Long Zhao
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Chenyu Li
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Chen Guan
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Ning Song
- Department of Obstetrics, Weifang People's Hospital, Weifang 261041, China
| | - Hong Luan
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Congjuan Luo
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Wei Jiang
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Quandong Bu
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yanfei Wang
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Lin Che
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Yan Xu
- Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
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18
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Park SJ, Li C, Chen YM. Endoplasmic Reticulum Calcium Homeostasis in Kidney Disease: Pathogenesis and Therapeutic Targets. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 191:256-265. [PMID: 33245915 DOI: 10.1016/j.ajpath.2020.11.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 10/14/2020] [Accepted: 11/06/2020] [Indexed: 01/15/2023]
Abstract
Calcium (Ca2+) homeostasis is a crucial determinant of cellular function and survival. Endoplasmic reticulum (ER) acts as the largest intracellular Ca2+ store that maintains Ca2+ homeostasis through the ER Ca2+ uptake pump, sarco/ER Ca2+ ATPase, ER Ca2+ release channels, inositol 1,4,5-trisphosphate receptor channel, ryanodine receptor, and Ca2+-binding proteins inside of the ER lumen. Alterations in ER homeostasis trigger ER Ca2+ depletion and ER stress, which have been associated with the development of a variety of diseases. In addition, recent studies have highlighted the role of ER Ca2+ imbalance caused by dysfunction of sarco/ER Ca2+ ATPase, ryanodine receptor, and inositol 1,4,5-trisphosphate receptor channel in various kidney diseases. Despite progress in the understanding of the importance of these ER Ca2+ channels, pumps, and binding proteins in the pathogenesis of kidney disease, treatment is still lacking. This mini-review is focused on: i) Ca2+ homeostasis in the ER, ii) ER Ca2+ dyshomeostasis and apoptosis, and iii) altered ER Ca2+ homeostasis in kidney disease, including podocytopathy, diabetic nephropathy, albuminuria, autosomal dominant polycystic kidney disease, and ischemia/reperfusion-induced acute kidney injury.
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Affiliation(s)
- Sun-Ji Park
- Division of Nephrology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Chuang Li
- Division of Nephrology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Ying Maggie Chen
- Division of Nephrology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri.
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19
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Zhong Y, Wang B, Hu S, Wang T, Zhang Y, Wang J, Liu Y, Zhang H. The role of endoplasmic reticulum stress in renal damage caused by acute mercury chloride poisoning. J Toxicol Sci 2020; 45:589-598. [PMID: 32879258 DOI: 10.2131/jts.45.589] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Acute mercury chloride (HgCl2) poisoning may lead to kidney injury, but the underlying mechanism remains largely unknown. Endoplasmic reticulum (ER) stress plays a role in some heavy metal poisoning. Whether it mediates kidney injury in acute HgCl2 poisoning remains unknown. In this study, we examined the kidney injury and the corresponding ER stress in the mouse model of different doses of acute HgCl2 poisoning. To further confirm the role of ER stress, we tested the effects of its chemical chaperone [4-phenylbutyric acid (4-PBA)]. The results revealed that acute HgCl2 poisoning caused more severe kidney injury with dose on and activated ER stress, as indicated by increased expression of GRP78 and CHOP. Inhibition of ER stress restored the functional and morphological changes of kidneys, and partly attenuated renal tubular epithelial cell apoptosis. In summary, ER stress contributes to the acute kidney injury following HgCl2 poisoning, and inhibition of ER stress may alleviate the kidney injury via reducing apoptosis.
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Affiliation(s)
- Yuxin Zhong
- Department of Clinic Pathology, Weifang Medical University, China.,Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Weifang Medical University, China
| | - Baoqiang Wang
- Department of Laboratory, Affiliated Hospital of Weifang Medical University, China
| | - Shan Hu
- Department of Clinic Pathology, Weifang Medical University, China.,Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Weifang Medical University, China
| | - Tingting Wang
- Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Weifang Medical University, China.,Department of Histology and Embryology, Weifang Medical University, China
| | - Yumiao Zhang
- Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Weifang Medical University, China.,Department of Nephrology, Affiliated Hospital of Weifang Medical University, China
| | - Jinling Wang
- Department of Nephrology, Affiliated Hospital of Weifang Medical University, China
| | - Yuqing Liu
- Department of Clinic Pathology, Weifang Medical University, China
| | - Hongxia Zhang
- Department of Clinic Pathology, Weifang Medical University, China.,Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Weifang Medical University, China
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20
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Gómez-Sierra T, Medina-Campos ON, Solano JD, Ibarra-Rubio ME, Pedraza-Chaverri J. Isoliquiritigenin Pretreatment Induces Endoplasmic Reticulum Stress-Mediated Hormesis and Attenuates Cisplatin-Induced Oxidative Stress and Damage in LLC-PK1 Cells. Molecules 2020; 25:molecules25194442. [PMID: 32992605 PMCID: PMC7582730 DOI: 10.3390/molecules25194442] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/19/2020] [Accepted: 09/26/2020] [Indexed: 12/11/2022] Open
Abstract
Isoliquiritigenin (IsoLQ) is a flavonoid with antioxidant properties and inducer of endoplasmic reticulum (ER) stress. In vitro and in vivo studies show that ER stress-mediated hormesis is cytoprotective; therefore, natural antioxidants and ER stress inducers have been used to prevent renal injury. Oxidative stress and ER stress are some of the mechanisms of damage involved in cisplatin (CP)-induced nephrotoxicity. This study aims to explore whether IsoLQ pretreatment induces ER stress and produces hormesis to protect against CP-induced nephrotoxicity in Lilly Laboratories Cell-Porcine Kidney 1 (LLC-PK1) cells. During the first stage of this study, both IsoLQ protective concentration and pretreatment time against CP-induced toxicity were determined by cell viability. At the second stage, the effect of IsoLQ pretreatment on cell viability, ER stress, and oxidative stress were evaluated. IsoLQ pretreatment in CP-treated cells induces expression of glucose-related proteins 78 and 94 kDa (GRP78 and GRP94, respectively), attenuates CP-induced cell death, decreases reactive oxygen species (ROS) production, and prevents the decrease in glutathione/glutathione disulfide (GSH/GSSG) ratio, free thiols levels, and glutathione reductase (GR) activity. These data suggest that IsoLQ pretreatment has a moderately protective effect on CP-induced toxicity in LLC-PK1 cells, through ER stress-mediated hormesis, as well as by the antioxidant properties of IsoLQ.
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21
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Prevention of acute kidney injury by low intensity pulsed ultrasound via anti-inflammation and anti-apoptosis. Sci Rep 2020; 10:14317. [PMID: 32868865 PMCID: PMC7459306 DOI: 10.1038/s41598-020-71330-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Accepted: 08/10/2020] [Indexed: 11/16/2022] Open
Abstract
The therapeutic effects of low intensity pulsed ultrasound (LIPUS) on renal ischemia/reperfusion injury (IRI) with acute kidney injury (AKI) are still unclear. A renal tubule cell model under H2O2 or hypoxia/reoxygenation (H/R) conditions with or without LIPUS pre-treatment (1 MHz, 30 and 100 mW/cm2, 15 min) was used to test the in vitro effects of LIPUS. An AKI mouse model of unilateral IRI with nephrectomy of the contralateral kidney for 48 h with or without LIPUS treatment (3 MHz, 100 mW/cm2, 20 min/day) 5 day before IRI were used to investigate the in vivo effects of LIPUS. LIPUS significantly protected the renal tubule cell viability and prevented inflammatory signals against H2O2 challenge. LIPUS could inhibit the apoptosis-related molecular signals and increase the protein levels of endogenous antioxidant enzymes, α-Klotho, and Sirt1 in renal tubule cells after H/R challenge. LIPUS alleviated the increases in the serum levels of blood urea nitrogen, creatinine, and cystatin C, renal pathological changes and apoptosis-related molecular signals, and impaired antioxidant enzymes in AKI mice. The IRI-induced inflammatory responses in the kidneys and spleens could be reversed by LIPUS. These findings suggest that LIPUS treatment displays the benefits for renal protection in IRI-induced AKI mice.
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22
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Pokkunuri ID, Lokhandwala MF, Banday AA. Protein disulfide isomerase inhibition impairs Keap1/Nrf2 signaling and mitochondrial function and induces apoptosis in renal proximal tubular cells. Am J Physiol Renal Physiol 2020; 319:F686-F696. [PMID: 32830535 DOI: 10.1152/ajprenal.00049.2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Renal proximal tubular apoptosis plays a critical role in kidney health and disease. However, cellular molecules that trigger renal apoptosis remain elusive. Here, we evaluated the effect of inhibiting protein disulfide isomerase (PDI), a critical thioredoxin chaperone protein, on apoptosis as well as the underlying mechanisms in human renal proximal tubular (HK2) cells. HK2 cells were transfected with PDI-specific siRNA in the absence and presence of an antioxidant, tempol. PDI siRNA transfection resulted in a decrease of ~70% in PDI protein expression and enzyme activity. PDI inhibition increased caspase-3 activity and induced profound cell apoptosis. Mitochondrial function, as assessed by mitochondrial cytochrome c levels, mitochondrial membrane potential, oxygen consumption, and ATP levels, was significantly reduced in PDI-inhibited cells. Also, PDI inhibition caused nuclear factor erythroid 2-related factor 2 (Nrf2; a redox-sensitive transcription factor) cytoplasmic sequestration, decreased superoxide dismutase and glutathione-S-transferase activities, and increased oxidative stress. In PDI-inhibited cells, tempol reduced apoptosis, caspase-3 activity, and oxidative stress and also restored Nrf2 nuclear translocation and mitochondrial function. Silencing Nrf2 in the cells abrogated the beneficial effect of tempol, whereas Kelch-like ECH-associated protein 1 (an Nrf2 regulatory protein) silencing protected cells from PDI inhibitory effects. Collectively, our data indicate that PDI inhibition diminishes Nrf2 nuclear translocation, causing oxidative stress that further triggers mitochondrial dysfunction and renal cell apoptosis. This study suggests an important role for PDI in renal cell apoptosis involving Nrf2 and mitochondrial dysfunction.
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Affiliation(s)
- Indira D Pokkunuri
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas
| | - Mustafa F Lokhandwala
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas
| | - Anees Ahmad Banday
- Heart and Kidney Institute, College of Pharmacy, University of Houston, Houston, Texas
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23
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Tang C, Hu Y, Gao J, Jiang J, Shi S, Wang J, Geng Q, Liang X, Chai X. Dexmedetomidine pretreatment attenuates myocardial ischemia reperfusion induced acute kidney injury and endoplasmic reticulum stress in human and rat. Life Sci 2020; 257:118004. [PMID: 32621918 DOI: 10.1016/j.lfs.2020.118004] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 06/21/2020] [Accepted: 06/21/2020] [Indexed: 12/26/2022]
Abstract
BACKGROUND Patients undergoing cardiopulmonary bypass (CPB) often develop acute kidney injury (AKI) caused by myocardial ischemia reperfusion (MI/R), and this renal injury can be resolved notably by dexmedetomidine. Endoplasmic reticulum (ER) stress was reported to get involved in organ injury including AKI. OBJECTIVES The current study aimed to address the correlation between MI/R induced AKI with ER stress and to assess the effects of dexmedetomidine pretreatment on AKI protection. METHOD Patients selected for heart valve replacement surgery were randomly assigned to NS group (pre-anesthesia with 0.9% NaCl) and DEX group (pre-anesthesia with dexmedetomidine). Rat MI/R model was induced by occluding coronary artery for 30 min followed by 48-hour reperfusion. Rats were randomized into Sham (0.9% NaCl), I/R (MI/R + 0.9% NaCl) and I/R + DEX (MI/R + dexmedetomidine). Organ function and ER stress condition were evaluated by blood chemistry, pathology, and molecular test. RESULTS Clinical data indicated dexmedetomidine pretreatment attenuated AKI and oxidative stress as well as postischemic myocardial injury in patients. Accordingly animal results suggested dexmedetomidine reduced cellular injury and improved postischemic myocardial and renal function. Dexmedetomidine also reduced myocardial and renal cells apoptosis and down-regulated ER stress. CONCLUSIONS These results suggested that dexmedetomidine pretreatment attenuates MI/R injury-induced AKI by relieving the ER stress.
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Affiliation(s)
- Chaoliang Tang
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China.
| | - Yida Hu
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Jie Gao
- Department of Anesthesia, Critical Care & Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02144, USA
| | - Jiazhen Jiang
- Department of Emergency, Huashan Hospital North, Fudan University, Shanghai, 201907, China
| | - Si Shi
- Department of Anesthesiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, China
| | - Jiawu Wang
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Qingtian Geng
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China
| | - Xinghan Liang
- Department of Clinical Laboratory, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230000, Anhui, China
| | - Xiaoqing Chai
- Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, Anhui, China.
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24
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Uddin MJ, Dorotea D, Pak ES, Ha H. Fyn Kinase: A Potential Therapeutic Target in Acute Kidney Injury. Biomol Ther (Seoul) 2020; 28:213-221. [PMID: 32336052 PMCID: PMC7216742 DOI: 10.4062/biomolther.2019.214] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/01/2020] [Accepted: 04/06/2020] [Indexed: 01/29/2023] Open
Abstract
Acute kidney injury (AKI) is a common disease with a complex pathophysiology which significantly contributes to the development of chronic kidney disease and end stage kidney failure. Preventing AKI can consequently reduce mortality, morbidity, and healthcare burden. However, there are no effective drugs in use for either prevention or treatment of AKI. Developing therapeutic agents with pleiotropic effects covering multiple pathophysiological pathways are likely to be more effective in attenuating AKI. Fyn, a non-receptor tyrosine kinase, has been acknowledged to integrate multiple injurious stimuli in the kidney. Limited studies have shown increased Fyn transcription level and activation under experimental AKI. Activated Fyn kinase propagates various downstream signaling pathways associated to the progression of AKI, such as oxidative stress, inflammation, endoplasmic reticulum stress, as well as autophagy dysfunction. The versatility of Fyn kinase in mediating various pathophysiological pathways suggests that its inhibition can be a potential strategy in attenuating AKI.
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Affiliation(s)
- Md Jamal Uddin
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Debra Dorotea
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Eun Seon Pak
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
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25
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The Mechanisms of the Herbal Components of CRSAS on HK-2 Cells in a Hypoxia/Reoxygenation Model Based on Network Pharmacology. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:5352490. [PMID: 32351597 PMCID: PMC7174917 DOI: 10.1155/2020/5352490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 02/29/2020] [Accepted: 03/10/2020] [Indexed: 01/22/2023]
Abstract
Background Acute kidney injury is a global problem, which brings a great burden to the society and family. The component of rhubarb, Salvia miltiorrhiza, Astragalus membranaceus, and safflower (CRSAS) has been proved as an useful agent to treat acute kidney injury (AKI) patients in China. Objective To assess the effect of CRSAS on human renal tubular epithelial cells (HK-2) after the hypoxia/reoxygenation (H/R) and investigate the potential mechanisms. Methods Network pharmacology was used to predict the potential pathways shared by CRSAS and AKI. Cell counting kit-8 (CCK-8) was used to assess the HK-2 vitality. Apoptosis of HK-2 cells was detected by carboxyfluorescein succinimidyl ester/propidium iodide (CFSF/PI) staining. Expression of GRP78, CHOP, caspase-3, and Bax was detected by western blot and quantitative real-time RT-PCR. Result CRSAS and AKI shared the endoplasmic reticulum stress (ERS) pathway based on network pharmacology analysis. CRSAS increases the vitality of HK-2 cells and reduces the apoptosis of HK-2 cells induced by H/R injury. The expression of GRP78 and CHOP in CRSAS groups was lower than that of control groups. Conclusions H/R can induce HK-2 cell apoptosis and ERS. CRSAS can reduce HK-2 cell apoptosis by inhibiting the ERS. Therefore, CRSAS might be able to treat kidney disease due to I/R injury. Animal experiment should be done to further prove our finding.
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26
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Tan X, Tao Q, Li G, Xiang L, Zheng X, Zhang T, Wu C, Li D. Fibroblast Growth Factor 2 Attenuates Renal Ischemia-Reperfusion Injury via Inhibition of Endoplasmic Reticulum Stress. Front Cell Dev Biol 2020; 8:147. [PMID: 32266254 PMCID: PMC7105877 DOI: 10.3389/fcell.2020.00147] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/21/2020] [Indexed: 12/14/2022] Open
Abstract
Acute kidney injury (AKI) is a serious clinical disease that is mainly caused by renal ischemia-reperfusion (I/R) injury, sepsis, and nephrotoxic drugs. The pathologic mechanism of AKI is very complex and may involve oxidative stress, inflammatory response, autophagy, apoptosis, and endoplasmic reticulum (ER) stress. The basic fibroblast growth factor (FGF2) is a canonic member of the FGF family that plays a crucial role in various cellular processes, including organ development, wound healing, and tissue regeneration. However, few studies have reported the potential therapeutic effect of FGF2 in the repair of renal ischemic injury in the past two decades. In the present study, we investigated the protective effect of FGF2 on renal I/R injury using Sprague-Dawley and NRK-52E cells. Our results showed that FGF2 significantly attenuates the apoptosis of kidney tissues after I/R injury through the inhibition of excessive ER stress. Moreover, FGF2 also alleviated the excessive ER stress and apoptosis in cultured NRK-52E cells injured by tert-Butyl hydroperoxide (TBHP). Significantly, phosphatidylinositol 3-kinase (PI3K)-selective inhibitor LY294002 and mitogen-activated protein kinase kinase (MEK)-selective inhibitor U0126 were utilized in the present study to examine the protective mechanism of FGF2. Our in vitro experimental results confirmed that both LY294002 and U0126 largely abolished the protective effect of FGF2. Taken together, the findings of the present study indicated that FGF2 attenuates I/R-induced renal epithelial apoptosis by suppressing excessive ER stress via the activation of the PI3K/AKT and MEK-ERK1/2 signaling pathways.
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Affiliation(s)
- Xiaohua Tan
- Department of Pathology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Qianyu Tao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Beilun District People's Hospital of Ningbo, Ningbo, China
| | - Guixiu Li
- Outpatient Operating Room, Jiaozhou Central Hospital of Qingdao, Qingdao, China
| | - Lijun Xiang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaomeng Zheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Beilun District People's Hospital of Ningbo, Ningbo, China
| | - Tianzhen Zhang
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Cuijiao Wu
- Department of Human Anatomy, Histology and Embryology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Dequan Li
- Department of Traumatology Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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27
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Brusletto BS, Løberg EM, Hellerud BC, Goverud IL, Berg JP, Olstad OK, Gopinathan U, Brandtzaeg P, Øvstebø R. Extensive Changes in Transcriptomic "Fingerprints" and Immunological Cells in the Large Organs of Patients Dying of Acute Septic Shock and Multiple Organ Failure Caused by Neisseria meningitidis. Front Cell Infect Microbiol 2020; 10:42. [PMID: 32154187 PMCID: PMC7045056 DOI: 10.3389/fcimb.2020.00042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/22/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Patients developing meningococcal septic shock reveal levels of Neisseria meningitidis (106-108/mL) and endotoxin (101-103 EU/mL) in the circulation and organs, leading to acute cardiovascular, pulmonary and renal failure, coagulopathy and a high case fatality rate within 24 h. Objective: To investigate transcriptional profiles in heart, lungs, kidneys, liver, and spleen and immunostain key inflammatory cells and proteins in post mortem formalin-fixed, paraffin-embedded (FFPE) tissue samples from meningococcal septic shock patients. Patients and Methods: Total RNA was isolated from FFPE and fresh frozen (FF) tissue samples from five patients and two controls (acute non-infectious death). Differential expression of genes was detected using Affymetrix microarray analysis. Lung and heart tissue samples were immunostained for T-and B cells, macrophages, neutrophils and the inflammatory markers PAI-1 and MCP-1. Inflammatory mediators were quantified in lysates from FF tissues. Results: The transcriptional profiles showed a complex pattern of protein-coding and non-coding RNAs with significant regulation of pathways associated with organismal death, cell death and survival, leukocyte migration, cellular movement, proliferation of cells, cell-to-cell signaling, immune cell trafficking, and inflammatory responses in an organ-specific clustering manner. The canonical pathways including acute phase response-, EIF2-, TREM1-, IL-6-, HMBG1-, PPAR signaling, and LXR/RXR activation were associated with acute heart, pulmonary, and renal failure. Fewer genes were regulated in the liver and particularly in the spleen. The main upstream regulators were TNF, IL-1β, IL-6, RICTOR, miR-6739-3p, and CD3. Increased numbers of inflammatory cells (CD68+, MPO+, CD3+, and CD20+) were found in lungs and heart. PAI-1 inhibiting fibrinolysis and MCP-1 attracting leukocyte were found significantly present in the septic tissue samples compared to the controls. Conclusions: FFPE tissue samples can be suitable for gene expression studies as well as immunostaining of specific cells or molecules. The most pronounced gene expression patterns were found in the organs with highest levels of Neisseria meningitidis DNA. Thousands of protein-coding and non-coding RNA transcripts were altered in lungs, heart and kidneys. We identified specific biomarker panels both protein-coding and non-coding RNA transcripts, which differed from organ to organ. Involvement of many genes and pathways add up and the combined effect induce organ failure.
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Affiliation(s)
- Berit Sletbakk Brusletto
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Else Marit Løberg
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Pathology, Oslo University Hospital, Oslo, Norway
| | | | - Ingeborg Løstegaard Goverud
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Pathology, Oslo University Hospital, Oslo, Norway
| | - Jens Petter Berg
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | | | - Unni Gopinathan
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Petter Brandtzaeg
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway.,Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Pediatrics, Oslo University Hospital, Oslo, Norway
| | - Reidun Øvstebø
- Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
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28
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Tan X, Yu L, Yang R, Tao Q, Xiang L, Xiao J, Zhang JS. Fibroblast Growth Factor 10 Attenuates Renal Damage by Regulating Endoplasmic Reticulum Stress After Ischemia-Reperfusion Injury. Front Pharmacol 2020; 11:39. [PMID: 32116715 PMCID: PMC7019113 DOI: 10.3389/fphar.2020.00039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/14/2020] [Indexed: 01/08/2023] Open
Abstract
Renal ischemia–reperfusion (I/R) injury is a predominant cause of acute kidney injury (AKI), the pathologic mechanism of which is highly complex involving reactive oxygen species (ROS) accumulation, inflammatory response, autophagy, apoptosis as well as endoplasmic reticulum (ER) stress. Fibroblast growth factor 10 (FGF10), as a multifunctional growth factor, plays crucial roles in embryonic development, adult homeostasis, and regenerative medicine. Herein, we investigated the molecular pathways underlying the protective effect of FGF10 on renal I/R injury using Sprague–Dawley rats. Results showed that administration of FGF10 not only effectively inhibited I/R-induced activation of Caspase-3 and expression of Bax, but also alleviated I/R evoked expression of ER stress-related proteins in the kidney including CHOP, GRP78, XBP-1, and ATF-4 and ATF-6. The protective effect of FGF10 against apoptosis and ER stress was recapitulated by in vitro experiments using oxidative damaged NRK-52E cells induced by tert-Butyl hydroperoxide (TBHP). Significantly, U0126, a selective noncompetitive inhibitor of MAP kinase kinases (MKK), largely abolished the protective role of FGF10. Taken together, both in vivo and in vitro experiments indicated that FGF10 attenuates I/R-induced renal epithelial apoptosis by suppressing excessive ER stress, which is, at least partially, mediated by the activation of the MEK–ERK1/2 signaling pathway. Therefore, our present study revealed the therapeutic potential of FGF10 on renal I/R injury.
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Affiliation(s)
- Xiaohua Tan
- Department of Pathology, School of Basic Medicine, Qingdao University, Qingdao, China.,School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lixia Yu
- Department of Pharmacy, Xixi Hospital of Hangzhou, Hangzhou, China
| | - Ruo Yang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Qianyu Tao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lijun Xiang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jian Xiao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jin-San Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Institute of Life Sciences, Wenzhou University, Wenzhou, China
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29
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Zhu Y, Ding A, Yang D, Cui T, Yang H, Zhang H, Wang C. CYP2J2-produced epoxyeicosatrienoic acids attenuate ischemia/reperfusion-induced acute kidney injury by activating the SIRT1-FoxO3a pathway. Life Sci 2020; 246:117327. [PMID: 31954161 DOI: 10.1016/j.lfs.2020.117327] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/09/2020] [Accepted: 01/13/2020] [Indexed: 02/06/2023]
Abstract
Cytochrome P450 (CYP) epoxygenases can metabolize arachidonic acids to epoxyeicosatrienoic acids (EETs), which play a protective role in the renal system, but their involvement in ischemia/reperfusion (I/R)-induced acute kidney injury remains unknown. Here, using a rat model, we demonstrated that forced CYP2J2 expression attenuated I/R-induced renal dysfunction and protected histological integrity. We showed that CYP2J2 significantly decreased I/R-induced upregulation of blood urea nitrogen and serum creatinine and enhanced autophagy during I/R treatment. In addition, we determined the protective effect of CYP2J2 against I/R-caused apoptosis. We demonstrated that CYP2J2 overexpression attenuated the downregulation of SIRT1 and FoxO3a by I/R-induced injury. Moreover, exogenous 11,12-EET addition obviously promoted I/R-induced autophagic flux and suppressed I/R-induced apoptosis through SIRT1-FoxO3a signaling activation. Our data indicate that CYP2J2-produced EETs improve I/R-caused kidney injury by activating the SIRT1-FoxO3a signaling pathway, which protects from renal I/R injury.
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Affiliation(s)
- Ye Zhu
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China.
| | - Ao Ding
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | | | - Tongxia Cui
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | - Hui Yang
- Department of Rheumatology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | - Hua Zhang
- Department of Rheumatology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China
| | - Cheng Wang
- Department of Nephrology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, Guangdong, China.
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30
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Protein misfolding in endoplasmic reticulum stress with applications to renal diseases. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2020. [PMID: 31928726 DOI: 10.1016/bs.apcsb.2019.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Protein misfolding may be the result of a variety of different processes that disrupt the ability of a protein to form a thermodynamically stable tertiary structure that allows it to perform its proper function. In this chapter, we explore the nature of a protein's form that allows it to have a stable tertiary structure, and examine specific mutation that are known to occur in the coding regions of DNA that disrupt a protein's ability to be folded into a thermodynamically stable tertiary structure. We examine the consequences of these protein misfoldings in terms of the endoplasmic reticulum stress response and resulting unfolded protein response. These conditions are specifically related to renal diseases. Further, we explore novel therapeutics, pharmacological chaperones, that are being developed to alleviate the disease burden associated with protein misfolding caused by mutations. These interventions aim to stabilize protein folding intermediates and allow proper folding to occur as well as prevent protein aggregation and the resulting pathophysiological consequences.
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31
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Yousefi-Manesh H, Hemmati S, Shirooie S, Nabavi SM, Talebzadeh Bonakdar A, Fayaznia R, Asgardoon MH, Zare Dehnavi A, Ghafouri M, Nkuimi Wandjou JG, Caprioli G, Sut S, Maggi F, Dall'Acqua S. Protective effects of hydroalcoholic extracts from an ancient apple variety 'Mela Rosa dei Monti Sibillini' against renal ischemia/reperfusion injury in rats. Food Funct 2019; 10:7544-7552. [PMID: 31686074 DOI: 10.1039/c9fo01635j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The purpose of this work was to investigate the effect of hydroalcoholic extracts from the peel (APE) and pulp (APP) of a traditional apple variety of central Italy, the 'Mela Rosa dei Monti Sibillini', on the damage caused by renal ischemia/reperfusion injury (IRI) in rats. Thirty mg per kg b.w. of the extracts were administered intraperitoneally to male adult Wistar rats 3 days before the induction of IRI by pedicle clamping. A significant decrease in the levels of malondialdehyde (MDA), tumor necrosis factor-α (TNFα), interleukin 1 beta (IL-1β) and nuclear factor-κB (NF-κB) was observed in the groups pre-treated with APE when compared with IRI rats. The chemical composition of APE was determined by HPLC-DAD-MSn highlighting a significant amount of proanthocyanidins (52.9 mg g-1), flavonols (42.27 mg g-1) and dihydrochalcones (11.75 mg g-1). These findings indicated that this ancient apple variety is a promising source of nutraceuticals and functional foods helpful to manage complications of renal disorders.
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Affiliation(s)
- Hasan Yousefi-Manesh
- Preclinical Core Facility, Tehran University of Medical Sciences, Tehran, Iran and School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran and Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Hemmati
- Preclinical Core Facility, Tehran University of Medical Sciences, Tehran, Iran
| | - Samira Shirooie
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | | | - Reza Fayaznia
- School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Hossein Asgardoon
- Immunodeficiencies, Students' Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Zare Dehnavi
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Ghafouri
- Department of Pharmacology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Stefania Sut
- Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Legnaro, Italy
| | - Filippo Maggi
- School of Pharmacy, University of Camerino, Camerino, Italy
| | - Stefano Dall'Acqua
- Departement of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
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Endoplasmic reticulum stress and monogenic kidney diseases in precision nephrology. Pediatr Nephrol 2019; 34:1493-1500. [PMID: 30099615 PMCID: PMC6370526 DOI: 10.1007/s00467-018-4031-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/22/2018] [Accepted: 07/20/2018] [Indexed: 01/05/2023]
Abstract
The advent of next-generation sequencing (NGS) in recent years has led to a rapid discovery of novel or rare genetic variants in human kidney cell genes, which is transforming the risk assessment, diagnosis, and treatment of kidney disease. Mutations may lead to protein misfolding, disruption of protein trafficking, and endoplasmic reticulum (ER) retention. An imbalance between the load of misfolded proteins and the folding capacity of the ER causes ER stress and unfolded protein response. Mutations in nephrin (NPHS1), podocin (NPHS2), laminin β2 (LAMB2), and α-actinin-4 (ACTN4) have been shown to induce ER stress in HEK293 cells and podocytes in hereditary nephrotic syndromes; various founder mutations in collagen IV α chains (COL4A) have been demonstrated to activate podocyte ER stress in collagen IV nephropathies; and mutations in uromodulin (UMOD) have been reported to trigger tubular ER stress in autosomal dominant tubulointerstitial kidney disease. Meanwhile, ER resident protein SEC63 may modify disease severity in autosomal dominant polycystic kidney disease. These findings underscore the importance of ER stress in the pathogenesis of monogenic kidney disease. Recently, we have identified mesencephalic astrocyte-derived neurotrophic factor (MANF) and cysteine-rich with EGF-like domains 2 (CRELD2) as urinary ER stress biomarkers in ER stress-mediated kidney diseases.
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Li C, Zhao L, Wang Y, Che L, Luan H, Luo C, Xu Y. Cysteine‐rich protein 61, a specific ultra‐early biomarker in kidney ischemia/reperfusion injury. Nephrology (Carlton) 2019; 24:798-805. [PMID: 30328178 DOI: 10.1111/nep.13513] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2018] [Indexed: 01/03/2023]
Affiliation(s)
- Chenyu Li
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Long Zhao
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Yanfei Wang
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Lin Che
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Hong Luan
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Congjuan Luo
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
| | - Yan Xu
- Department of NephrologyThe Affiliated Hospital of Qingdao University Qingdao China
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Mo JS, Choi D, Han YR, Kim N, Jeong HS. Morin has protective potential against ER stress induced apoptosis in renal proximal tubular HK-2 cells. Biomed Pharmacother 2019; 112:108659. [PMID: 30784934 DOI: 10.1016/j.biopha.2019.108659] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Revised: 02/01/2019] [Accepted: 02/01/2019] [Indexed: 12/27/2022] Open
Abstract
ER stress is an early event of acute kidney injury and has been linked to accelerate the development of chronic kidney disease. Therefore, the compounds that can mimic ER stress inhibitor may confer regulatory effects on ER stress induced apoptosis. In this study, we investigated the protective effects of flavonoid morin against ER stress induced apoptosis in human renal proximal tubular HK-2 cells. Morin downregulated the expression of GRP78, central regulator of ER stress response, induced by ER stress inducer tunicamycin. Interestingly, morin selectively inhibited the IRE1 pathway among the three major arms of the ER stress responses. The increased expression of XBP1-sp, phosphor-IRE-1α, and phosphor-JNK by TM were markedly suppressed by the pretreatment of morin. Morin also decreased the intracellular ROS production and the apoptosis induced by TM in HK-2 cells. Taken together, our finding show that morin acts as an ER stress inhibitor, and can be a good candidate in various ER-stress associated kidney diseases.
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Affiliation(s)
- Jung-Soon Mo
- Genomic Instability Research Center (GIRC) & Genome Stability Institute, Ajou University School of Medicine, Suwon 16499, Republic of Korea
| | - Dabin Choi
- Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea
| | - Yu-Ran Han
- Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea
| | - Nambin Kim
- Department of Biomedical Sciences, Cancer Biology Graduate Program, Ajou University Graduate School of Medicine, Suwon, 16499, Republic of Korea
| | - Han-Sol Jeong
- Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan-si 50612, Republic of Korea.
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Wang MG, Fan RF, Li WH, Zhang D, Yang DB, Wang ZY, Wang L. Activation of PERK-eIF2α-ATF4-CHOP axis triggered by excessive ER stress contributes to lead-induced nephrotoxicity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2018; 1866:713-726. [PMID: 30528975 DOI: 10.1016/j.bbamcr.2018.12.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 11/07/2018] [Accepted: 12/01/2018] [Indexed: 12/11/2022]
Abstract
Lead (Pb) is a known nephrotoxicant that causes damage to proximal tubular cells. PERK pathway plays an important role in the pathogenesis of renal diseases, but its role in Pb-induced nephrotoxicity remains largely unknown. In this study, data showed that Pb could induce ER stress as shown by increased phosphorylation of PERK with subsequent activation of the eIF2α-ATF4-CHOP axis in primary rat proximal tubular (rPT) cells, indicating the activation of PERK-eIF2α-ATF4-CHOP pathway due to excessive ER stress. Pb-activated PERK pathway can be effectively inhibited by 4-phenylbutyric acid and PERK gene silencing, respectively; whereas continuously up-regulated by tunicamycin (TM) treatment. Moreover, Pb-induced apoptosis and inhibition of autophagic flux in rPT cells were significantly augmented and aggravated by co-treatment with TM, respectively. Pharmacological or genetic inhibition of the PERK pathway results in alleviation of apoptosis and restoration of autophagy inhibition in Pb-exposed rPT cells. Mechanistically, activation of PERK-eIF2α-ATF4-CHOP axis triggered by excessive ER stress in rPT cells leads to Pb-induced apoptosis and blockage of autophagic flux, resulting in nephrotoxicity.
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Affiliation(s)
- Min-Ge Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China
| | - Rui-Feng Fan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China
| | - Wen-Hui Li
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China
| | - Dong Zhang
- Shandong Provincial Center for Animal Disease Control and Prevention, Ji'nan City, Shandong Province 250022, China
| | - Du-Bao Yang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China
| | - Zhen-Yong Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China
| | - Lin Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, 61 Daizong Street, Tai'an City, Shandong Province 271018, China.
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Tan X, Zhu H, Tao Q, Guo L, Jiang T, Xu L, Yang R, Wei X, Wu J, Li X, Zhang JS. FGF10 Protects Against Renal Ischemia/Reperfusion Injury by Regulating Autophagy and Inflammatory Signaling. Front Genet 2018; 9:556. [PMID: 30532765 PMCID: PMC6265307 DOI: 10.3389/fgene.2018.00556] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 10/31/2018] [Indexed: 12/14/2022] Open
Abstract
Ischemia-reperfusion (I/R) is a common cause of acute kidney injury (AKI), which is associated with high mortality and poor outcomes. Autophagy plays important roles in the homeostasis of renal tubular cells (RTCs) and is implicated in the pathogenesis of AKI, although its role in the process is complex and controversial. Fibroblast growth factor 10 (FGF10), a multifunctional FGF family member, was reported to exert protective effect against cerebral ischemia injury and myocardial damage. Whether FGF10 has similar beneficial effect, and if so whether autophagy is associated with the potential protective activity against AKI has not been investigated. Herein, we report that FGF10 treatment improved renal function and histological integrity in a rat model of renal I/R injury. We observed that FGF10 efficiently reduced I/R-induced elevation in blood urea nitrogen, serum creatinine as well as apoptosis induction of RTCs. Interestingly, autophagy activation following I/R was suppressed by FGF10 treatment based on the immunohistochemistry staining and immunoblot analyses of LC3, Beclin-1 and SQSTM1/p62. Moreover, combined treatment of FGF10 with Rapamycin partially reversed the renoprotective effect of FGF10 suggesting the involvement of mTOR pathway in the process. Interestingly, FGF10 also inhibited the release of HMGB1 from the nucleus to the extracellular domain and regulated the expression of inflammatory cytokines such as TNF-α, IL-1β and IL-6. Together, these results indicate that FGF10 could alleviate kidney I/R injury by suppressing excessive autophagy and inhibiting inflammatory response and may therefore have the potential to be used for the prevention and perhaps treatment of I/R-associated AKI.
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Affiliation(s)
- Xiaohua Tan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Qingdao University Medical College, Qingdao, China
| | - Hongmei Zhu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Qianyu Tao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Lisha Guo
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Tianfang Jiang
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Le Xu
- The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ruo Yang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiayu Wei
- Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Jin Wu
- Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Jin-San Zhang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China.,The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China.,Institute of Life Sciences, Wenzhou University, Wenzhou, China
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Qi R, Yang C. Renal tubular epithelial cells: the neglected mediator of tubulointerstitial fibrosis after injury. Cell Death Dis 2018; 9:1126. [PMID: 30425237 PMCID: PMC6233178 DOI: 10.1038/s41419-018-1157-x] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/06/2018] [Accepted: 10/18/2018] [Indexed: 02/07/2023]
Abstract
Renal fibrosis, especially tubulointerstitial fibrosis, is the inevitable outcome of all progressive chronic kidney diseases (CKDs) and exerts a great health burden worldwide. For a long time, interests in renal fibrosis have been concentrated on fibroblasts and myofibroblasts. However, in recent years, growing numbers of studies have focused on the role of tubular epithelial cells (TECs). TECs, rather than a victim or bystander, are probably a neglected mediator in renal fibrosis, responding to a variety of injuries. The maladaptive repair mechanisms of TECs may be the key point in this process. In this review, we will focus on the role of TECs in tubulointerstitial fibrosis. We will follow the fate of a tubular cell and depict the intracellular changes after injury. We will then discuss how the repair mechanism of tubular cells becomes maladaptive, and we will finally discuss the intercellular crosstalk in the interstitium that ultimately proceeds tubulointerstitial fibrosis.
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Affiliation(s)
- Ruochen Qi
- Department of Urology, Zhongshan Hospital, Fudan University, 200032, Shanghai, P. R. China
- Shanghai Medical College, Fudan University, 200032, Shanghai, P.R. China
| | - Cheng Yang
- Department of Urology, Zhongshan Hospital, Fudan University, 200032, Shanghai, P. R. China.
- Shanghai Key Laboratory of Organ Transplantation, 200032, Shanghai, P. R. China.
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Shu S, Zhu J, Liu Z, Tang C, Cai J, Dong Z. Endoplasmic reticulum stress is activated in post-ischemic kidneys to promote chronic kidney disease. EBioMedicine 2018; 37:269-280. [PMID: 30314894 PMCID: PMC6286638 DOI: 10.1016/j.ebiom.2018.10.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 09/22/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023] Open
Abstract
Background Acute kidney injury (AKI) may lead to the development of chronic kidney disease (CKD), i.e. AKI-CKD transition, but the underlying mechanism remains largely unclear. Endoplasmic reticulum (ER) stress is characterized by the accumulation of unfolded or misfolded proteins in ER resulting in a cellular stress response. The role of ER stress in AKI-CKD transition remains unknown. Methods In this study, we examined ER stress in the mouse model of AKI-CKD transition after unilateral renal ischemia-reperfusion injury (uIR). To determine the role of ER stress in AKI-CKD transition, we tested the effects of two chemical chaperones: Tauroursodeoxycholic acid (TUDCA) and 4-phenylbutyric acid (4-PBA). Findings uIR led to the induction of ER stress in kidneys, as indicated by increased expression of UPR molecules CHOP (C/EBP homologous protein) and BiP(binding immunoglobulin protein; also called GRP78–78 kDa glucoseregulated protein). Given at 3 days after uIR, both TUDCA and 4-PBA blocked ER stress in post-ischemic kidneys. Notably, both chemicals promoted renal recovery and suppressed tubulointerstitial injury as manifested by the reduction of tubular atrophy, renal fibrosis and myofibroblast activation. Inhibition of ER stress further attenuated renal tubular epithelial cell apoptosis, inflammation and autophagy in post-ischemic kidneys. Interpretation These findings suggest that ER stress contributes critically to the development of chronic kidney pathologies and CKD following AKI, and inhibition of ER stress may represent a potential therapeutic strategy to impede AKI-CKD transition.
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Affiliation(s)
- Shaoqun Shu
- Department of Nephrology, The Second Xiangya Hospital at Central South University, Changsha, Hunan, China
| | - Jiefu Zhu
- Department of Nephrology, The Second Xiangya Hospital at Central South University, Changsha, Hunan, China; Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Zhiwen Liu
- Department of Nephrology, The Second Xiangya Hospital at Central South University, Changsha, Hunan, China
| | - Chengyuan Tang
- Department of Nephrology, The Second Xiangya Hospital at Central South University, Changsha, Hunan, China
| | - Juan Cai
- Department of Nephrology, The Second Xiangya Hospital at Central South University, Changsha, Hunan, China
| | - Zheng Dong
- Department of Nephrology, The Second Xiangya Hospital at Central South University, Changsha, Hunan, China; Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, Augusta, GA, USA.
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39
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Yi J, Yuan Y, Zheng J, Hu N. Hydrogen sulfide alleviates uranium-induced kidney cell apoptosis mediated by ER stress via 20S proteasome involving in Akt/GSK-3β/Fyn-Nrf2 signaling. Free Radic Res 2018; 52:1020-1029. [DOI: 10.1080/10715762.2018.1514603] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Juan Yi
- School of Pharmaceutical and Biological Science, Institute of Biology, University of South China, Hengyang, China
| | - Yan Yuan
- School of Pharmaceutical and Biological Science, Institute of Biology, University of South China, Hengyang, China
| | - Jifang Zheng
- School of Pharmaceutical and Biological Science, Institute of Biology, University of South China, Hengyang, China
| | - Nan Hu
- School of Pharmaceutical and Biological Science, Institute of Biology, University of South China, Hengyang, China
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40
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Zhang R, Zhou X, Shen X, Xie T, Xu C, Zou Z, Dong J, Liao L. Different sulfonylureas induce the apoptosis of proximal tubular epithelial cell differently via closing K ATP channel. Mol Med 2018; 24:47. [PMID: 30180807 PMCID: PMC6122448 DOI: 10.1186/s10020-018-0042-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 07/16/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Sulfonylureas (SUs) are widely prescribed for the treatment of type 2 diabetes (T2DM). Sulfonylurea receptors (SURs) are their main functional receptors. These receptors are also found in kidney, especially the tubular cells. However, the effects of SUs on renal proximal tubular epithelial cells (PTECs) were unclear. METHODS Three commonly used SUs were included in this study to investigate if different SUs have different effects on the apoptosis of PTECs. HK-2 cells were exposed to SUs for 24 h prior to exposure to 30 mM glucose, the apoptosis rate was evaluated by Annexin/PI flow cytometry. Bcl-2, Bax and the ratio of LC3II to LC3I were also studied by western blot in vitro. Diazoxide was used to evaluate the role of KATP channel in SUs-induced apoptosis of PTECs. A Student's t-test was used to assess significance for data within two groups. RESULTS Treatment with glibenclamide aggravated the apoptosis of HK-2 cells in high-glucose, as indicated by a significant decrease in the expression of Bcl-2 and increase in Bax. Additionally, the decreased LC3II/LC3I reflects that the autophagy was inhibited by glibenclamide. Similar but less pronounced change was found in glimepiride group, however, nearly opposite effects were found in gliclazide group. Further, the effects of glibenclamide on apoptosis promotion and the decreased LC3II/LC3I were ameliorated obviously by treatment with 100uM diazoxide. The potential protection effect of gliclazide was also inhibited after opening the KATP channel. CONCLUSION Our results suggest that, the effects of glibenclamide and glimepiride on PTECs apoptosis, especially the former, were achieved in part by closing the KATP channel. In contrast to glibenclamide and glimepiride, therapeutic concentrations of gliclazide showed an inhibitory effect on apoptosis of PTECs, which may have a benefit in the preservation of functional PTECs mass.
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Affiliation(s)
- Rui Zhang
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Xiaojun Zhou
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Xue Shen
- Division of Endocrinology, Department of Internal Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Tianyue Xie
- Division of Endocrinology, Department of Internal Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
| | - Chunmei Xu
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Zhiwei Zou
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China
| | - Jianjun Dong
- Department of Endocrinology, Qilu Hospital of Shandong University, Jinan, Shandong, China.
- Department of Internal Medicine, Division of Endocrinology, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Jinan, Shandong, China.
| | - Lin Liao
- Department of Endocrinology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China.
- Department of Internal Medicine, Division of Endocrinology, Shandong Provincial Qianfoshan Hospital, Shandong University, No. 16766, Jingshi Road, Jinan, Shandong, China.
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Uddin MJ, Pak ES, Ha H. Carbon monoxide releasing molecule-2 protects mice against acute kidney injury through inhibition of ER stress. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2018; 22:567-575. [PMID: 30181703 PMCID: PMC6115348 DOI: 10.4196/kjpp.2018.22.5.567] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 06/28/2018] [Accepted: 07/12/2018] [Indexed: 12/21/2022]
Abstract
Acute kidney injury (AKI), which is defined as a rapid decline of renal function, becomes common and recently recognized to be closely intertwined with chronic kidney diseases. Current treatment for AKI is largely supportive, and endoplasmic reticulum (ER) stress has emerged as a novel mediator of AKI. Since carbon monoxide attenuates ER stress, the objective of the present study aimed to determine the protective effect of carbon monoxide releasing molecule-2 (CORM2) on AKI associated with ER stress. Kidney injury was induced after LPS (15 mg/kg) treatment at 12 to 24 h in C57BL/6J mice. Pretreatment of CORM2 (30 mg/kg) effectively prevented LPS-induced oxidative stress and inflammation during AKI in mice. CORM2 treatment also effectively inhibited LPS-induced ER stress in AKI mice. In order to confirm effect of CO on the pathophysiological role of tubular epithelial cells in AKI, we used mProx24 cells. Pretreatment of CORM2 attenuated LPS-induced ER stress, oxidative stress, and inflammation in mProx24 cells. These data suggest that CO therapy may prevent ER stress-mediated AKI.
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Affiliation(s)
- Md Jamal Uddin
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Eun Seon Pak
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 03760, Korea
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Huang R, Shi M, Guo F, Feng Y, Feng Y, Liu J, Li L, Liang Y, Xiang J, Lei S, Ma L, Fu P. Pharmacological Inhibition of Fatty Acid-Binding Protein 4 (FABP4) Protects Against Rhabdomyolysis-Induced Acute Kidney Injury. Front Pharmacol 2018; 9:917. [PMID: 30135658 PMCID: PMC6092613 DOI: 10.3389/fphar.2018.00917] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 07/26/2018] [Indexed: 02/05/2023] Open
Abstract
Acute kidney injury (AKI) is a common and potentially life-threatening complication. Studies confirmed that circulating FABP4 depended on renal function of AKI patients. In our previous study, FABP4 was involved in the pathogenesis of I/R-induced AKI. However, the function of FABP4 in rhabdomyolysis-induced AKI remained poorly understood. In the study, we further investigated the effect of FABP4 in a murine model of glycerol injection-induced rhabdomyolysis. Following glycerol injection, the mice developed severe AKI as indicated by acute renal dysfunction and histologic changes, companied by the increased FABP4 expression in the cytoplasm of tubular epithelial cells. Pharmacological inhibition of FABP4 by a highly selective inhibitor BMS309403 significantly reduced serum creatinine level, proinflammatory cytokine mRNA expression of tumor necrosis factor-α, interleukin-6, and monocyte chemoattractant protein 1 as well as attenuated renal tubular damage in glycerol-injured kidneys. Oral administration of FABP4 inhibitor also resulted in a significant attenuation of ER stress indicated by transmission electron microscope analysis and its maker proteins expression of GRP78, CHOP, p-perk, and ATF4 in kidneys of AKI. Furthermore, BMS309403 could attenuate myoglobin-induced ER stress and inflammation in renal proximal tubular epithelial cell line (HK-2). Overall, these data highlighted that renal protection of selective FABP4 inhibitor was substantiated by the reduction of ER stress and inflammation in tubular epithelial cells of rhabdomyolysis-induced injured kidneys and suggested that the inhibition of FABP4 might be a promising therapeutic strategy for AKI treatment.
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Affiliation(s)
- Rongshuang Huang
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Min Shi
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Fan Guo
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Yuying Feng
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Yanhuan Feng
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Jing Liu
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Lingzhi Li
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Yan Liang
- Core Facility of West China Hospital, Chengdu, China
| | - Jin Xiang
- Laboratory of Clinical Pharmacology, West China Hospital of Sichuan University, Chengdu, China
| | - Song Lei
- Department of Pathology, West China Hospital of Sichuan University, Chengdu, China
| | - Liang Ma
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
| | - Ping Fu
- Kidney Research Laboratory, Division of Nephrology, West China Hospital of Sichuan University, Chengdu, China
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Gallazzini M, Pallet N. Endoplasmic reticulum stress and kidney dysfunction. Biol Cell 2018; 110:205-216. [DOI: 10.1111/boc.201800019] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/14/2018] [Accepted: 06/28/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Morgan Gallazzini
- INSERM U1151 - CNRS UMR 8253; Institut Necker Enfants Malades; Paris France
- INSERM U1147; Centre Universitaire des Saints Pères; Paris France
| | - Nicolas Pallet
- INSERM U1151 - CNRS UMR 8253; Institut Necker Enfants Malades; Paris France
- INSERM U1147; Centre Universitaire des Saints Pères; Paris France
- Université Paris Descartes; Paris France
- Service de Néphrologie; Hôpital Européen Georges Pompidou; Paris
- Service de Biochimie; Hôpital Européen Gorges Pompidou; Paris France
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44
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Wu H, Chang Q. The cryoprotectant trehalose could inhibit ERS-induced apoptosis by activating autophagy in cryoprotected rat valves. PLoS One 2018. [PMID: 29522567 PMCID: PMC5844695 DOI: 10.1371/journal.pone.0194078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Valvular diseases are common health problems that are strongly related to high morbidity and mortality; aortic valve allograft transplantation may be a promising way to improve survival and relieve symptoms. However, ideal tissue viability has not been observed with common valve cryopreservation methods, which could lead to apoptosis and necrosis in cryopreserved tissue. It has been observed that trehalose plays a positive role by acting to maintain cell structures and protect cells from stress responses. In this study, we studied the effects of trehalose in protecting rat valve tissue from the cooling process. We found improved higher cell function in rat valves treated with trehalose during cryopreservation than in those treated with dimethyl sulphoxide (DMSO). To further explore the mechanisms, we found that trehalose could down-regulate the expression of cleaved caspase-3, an important molecule involved in cell apoptosis. In addition, treatment with trehalose also decreased Glucose-regulated protein 78 (GRP78) and CCAAT/enhancer-binding protein homologous protein (CHOP), the key proteins in the endoplasmic reticulum stress (ERS) process. Intriguingly, we observed that trehalose promotes cryoprotected rat valve cell autophagy via an mTOR-independent but p38 MAPK-dependent signaling pathway. Additionally, miR-221 and miR-32 have been implicated in such cell activities. In summary, our study offers a new and meaningful cryopreservation approach for valve allograft storage.
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Affiliation(s)
- Hongyan Wu
- Department of Cardiovascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Qing Chang
- Department of Cardiovascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- * E-mail:
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45
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Shi M, Huang R, Guo F, Li L, Feng Y, Wei Z, Zhou L, Ma L, Fu P. Pharmacological inhibition of fatty acid-binding protein 4 (FABP4) protects against renal ischemia-reperfusion injury. RSC Adv 2018; 8:15207-15214. [PMID: 35541316 PMCID: PMC9079974 DOI: 10.1039/c8ra00122g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/18/2018] [Indexed: 02/05/2023] Open
Abstract
Fatty acid-binding protein 4 (FABP4) is a key mediator of endoplasmic reticulum (ER) stress and apoptosis in diabetes and atherosclerosis. Studies also confirmed that circulating FABP4 depended on renal function in chronic kidney disease (CKD) and acute kidney injury (AKI) patients. However, the function of FABP4 in AKI remains poorly understood and the aim of this study was to investigate the role of FABP4 in ischemia-reperfusion (I/R)-induced AKI. In the present study, renal I/R injury triggered the high expression of the FABP4 gene and protein in the nucleus and cytoplasm of tubular cells of mouse kidney tissue compared to that of Sham. Pretreatment with BMS309403, a highly selective inhibitor of FABP4 at a dose of 20 mg kg−1 d−1 for 4 d, significantly reduced serum creatinine levels to improve acute renal dysfunction and attenuated renal tubular damage in injured kidneys. Pharmacological inhibition of FABP4 also decreased the number of TdT-mediated dUTP nick-end labeling (TUNEL) positive apoptotic tubular cells, accompanied by the down-regulation of cleaved-caspase-3 expression. Furthermore, oral administration of FABP4 inhibitor resulted in a significant attenuation of ER stress indicated by its maker proteins expression of glucose-regulated protein 78 (GRP78), C/EBP homologous protein (CHOP), and caspase-12 in I/R injured kidneys. In vitro, the increased expression of FABP4 in the human renal proximal tubule cell line (HK-2 cell) was induced by hypoxia followed by reoxygenation (HR) and the FABP4 inhibitor resulted in a significant attenuation of cell apoptosis and ER stress in HR-induced HK-2 cells. In summary, these findings indicated that FABP4 contributed to the pathogenesis of I/R-induced AKI and suggested that the inhibition of FABP4 might be a promising therapeutic strategy for AKI treatment. FABP4 inhibition might attenuate I/R-induced AKI through reducing ER stress and apoptosis.![]()
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Affiliation(s)
- Min Shi
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | - Rongshuang Huang
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | - Fan Guo
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | - Lingzhi Li
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | - Yanhuan Feng
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | | | - Li Zhou
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | - Liang Ma
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
| | - Ping Fu
- Kidney Research Institute
- Division of Nephrology
- West China Hospital of Sichuan University
- Chengdu 610041
- China
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RTA-408 Protects Kidney from Ischemia-Reperfusion Injury in Mice via Activating Nrf2 and Downstream GSH Biosynthesis Gene. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7612182. [PMID: 29435098 PMCID: PMC5757134 DOI: 10.1155/2017/7612182] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 10/18/2017] [Accepted: 11/05/2017] [Indexed: 12/16/2022]
Abstract
Acute kidney injury (AKI) induced by ischemia-reperfusion is a critical conundrum in many clinical settings. Here, this study aimed to determine whether and how RTA-408, a novel oleanane triterpenoid, could confer protection against renal ischemia-reperfusion injury (IRI) in male mice. Mice treated with RTA-408 undergoing unilateral ischemia followed by contralateral nephrectomy had improved renal function and histological outcome, as well as decreased apoptosis, ROS production, and oxidative injury marker compared with vehicle-treated mice. Also, we had found that RTA-408 could strengthen the total antioxidant capacity by increasing Nrf2 nuclear translocation and subsequently increased Nrf2 downstream GSH-related antioxidant gene expression and activity. In vitro study demonstrated that GSH biosynthesis enzyme GCLc could be an important target of RTA-408. Furthermore, Nrf2-deficient mice treated with RTA-408 had no significant improvement in renal function, histology, ROS production, and GSH-related gene expression. Thus, by upregulating Nrf2 and its downstream antioxidant genes, RTA-408 presents a novel and potential approach to renal IRI prevention and therapy.
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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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48
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Cybulsky AV. Endoplasmic reticulum stress, the unfolded protein response and autophagy in kidney diseases. Nat Rev Nephrol 2017; 13:681-696. [DOI: 10.1038/nrneph.2017.129] [Citation(s) in RCA: 244] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Kim Y, Park SJ, Chen YM. Mesencephalic astrocyte-derived neurotrophic factor (MANF), a new player in endoplasmic reticulum diseases: structure, biology, and therapeutic roles. Transl Res 2017; 188:1-9. [PMID: 28719799 PMCID: PMC5601018 DOI: 10.1016/j.trsl.2017.06.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2017] [Revised: 06/20/2017] [Accepted: 06/23/2017] [Indexed: 02/06/2023]
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF), a newly identified 18-kDa soluble protein, localizes to the luminal endoplasmic reticulum (ER), whose stress can stimulate MANF expression and secretion. In Drosophila and zebrafish, MANF regulates dopaminergic neuron development. In contrast, in mice, MANF deficiency leads to diabetes and activation of the unfolded protein response. Recent studies in rodent models have demonstrated that MANF mitigates diabetes, exerts neurotrophic function in neurodegenerative disease, protects cardiomyocytes and neurons in myocardial infarction and cerebral ischemia, respectively, and promotes immune cell phenotype switch from proinflammatory macrophages to prorepair anti-inflammatory macrophages. The cytoprotective mechanisms of MANF on ER stress are currently under active investigation. In addition, for the first time, we have discovered that MANF can potentially serve as a urinary ER stress biomarker in ER stress-mediated kidney disease. These studies have underscored the diagnostic and therapeutic importance of MANF in ER diseases.
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Affiliation(s)
- Yeawon Kim
- Division of Nephrology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Mo
| | - Sun-Ji Park
- Division of Nephrology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Mo
| | - Ying Maggie Chen
- Division of Nephrology, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Mo.
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7,8-DHF Treatment Induces Cyr61 Expression to Suppress Hypoxia Induced ER Stress in HK-2 Cells. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5029797. [PMID: 28116298 PMCID: PMC5223021 DOI: 10.1155/2016/5029797] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 11/21/2016] [Indexed: 02/06/2023]
Abstract
Acute kidney injury (AKI) is a common syndrome which is strongly linked to high morbidity and mortality. Hypoxia is the leading cause of AKI and the proximal renal tubular cells are the most damaged part in the kidney during this period. It has been observed that 7,8-dihydroxyflavone (7,8-DHF) plays a protective role by acting on antiapoptosis and antioxidative stress. In this study we explored functions of 7,8-DHF in protecting human proximal tubular cell line HK-2 from hypoxia insults. We observed that treatment of 7,8-DHF could improve the viability of ischemic cell. Mechanistically, we found that 7,8-DHF could elevate the expression of cysteine-rich protein 61 (Cyr61), a protective immediate early gene in AKI. In addition, treatment of 7,8-DHF decreased CCAAT/enhancer-binding protein homologous protein (CHOP) expression, which is a marker protein during endoplasmic reticulum (ER) stress activation. Intriguingly, overexpression of Cyr61 significantly reduced CHOP expression. Taken together, our results provide novel insights into the possible protective role of 7,8-DHF by activating Cyr61 signaling and suppressing ER stress in hypoxic HK-2 cells which have potential clinical implications for the treatment of AKI.
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