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Wang M, Chen Z, Tang Z, Tang S. Natural products derived from traditional Chinese medicines targeting ER stress for the treatment of kidney diseases. Ren Fail 2024; 46:2396446. [PMID: 39192602 PMCID: PMC11360642 DOI: 10.1080/0886022x.2024.2396446] [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: 03/21/2024] [Revised: 08/19/2024] [Accepted: 08/20/2024] [Indexed: 08/29/2024] Open
Abstract
Various factors, both internal and external, can disrupt endoplasmic reticulum (ER) homeostasis and increase the burden of protein folding, resulting in ER stress. While short periods of ER stress can help cells return to normal function, excessive or prolonged ER stress triggers a complex signaling network that negatively affects cells. Numerous studies have demonstrated the significant role of ER stress in various kidney diseases, such as immune-related kidney injury, diabetic kidney diseases, renal ischemia reperfusion injury, and renal fibrosis. To date, there is a severe shortage of medications for the treatment of acute and chronic kidney diseases of all causes. Natural products derived from various traditional Chinese medicines (TCM), which are a major source of new drugs, have garnered considerable attention. Recent research has revealed that many natural products have renoprotective effects by targeting ER stress-mediated events, such as apoptosis, oxidative stress, inflammation, autophagy, and epithelial-mesenchymal transition. This article provides a comprehensive review of the current research progress on natural products targeting ER stress for the treatment of kidney diseases.
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Affiliation(s)
- Mengping Wang
- Department of Nephrology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Zhengtao Chen
- Department of Cardiovascular, Affiliated Hospital of Jiangxi University of Chinese Medicine, Nanchang, China
| | - Ziru Tang
- Department of Nephrology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shiyun Tang
- GCP Center, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Keifi Bajestani A, Alavi MS, Etemad L, Roohbakhsh A. Role of orphan G-protein coupled receptors in tissue ischemia: A comprehensive review. Eur J Pharmacol 2024; 978:176762. [PMID: 38906238 DOI: 10.1016/j.ejphar.2024.176762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 06/12/2024] [Accepted: 06/19/2024] [Indexed: 06/23/2024]
Abstract
Ischemic events lead to many diseases and deaths worldwide. Ischemia/reperfusion (I/R) occurs due to reduced blood circulation in tissues followed by blood reflow. Reoxygenation of ischemic tissues is characterized by oxidative stress, inflammation, energy distress, and endoplasmic reticulum stress. There are still no adequate clinical protocols or pharmacological approaches to address the consequences of I/R damage. G protein-coupled receptors (GPCRs) are important therapeutic targets. They compose a large family of seven transmembrane-spanning proteins that are involved in many biological functions. Orphan GPCRs are a large subgroup of these receptors expressed in different organs. In the present review, we summarized the literature regarding the role of orphan GPCRs in I/R in different organs. We focused on the effect of these receptors on modulating cellular and molecular processes underlying ischemia including apoptosis, inflammation, and autophagy. The study showed that GPR3, GPR4, GPR17, GPR30, GPR31, GPR35, GPR37, GPR39, GPR55, GPR65, GPR68, GPR75, GPR81, and GPR91 are involved in ischemic events, mainly in the brain and heart. These receptors offer new possibilities for treating I/R injuries in the body.
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Affiliation(s)
- Alireza Keifi Bajestani
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohaddeseh Sadat Alavi
- Department of Pharmacology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Etemad
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Roohbakhsh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.
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Kamińska D, Skrzycki M. Lipid droplets, autophagy, and ER stress as key (survival) pathways during ischemia-reperfusion of transplanted grafts. Cell Biol Int 2024; 48:253-279. [PMID: 38178581 DOI: 10.1002/cbin.12114] [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: 07/13/2023] [Revised: 11/30/2023] [Accepted: 12/14/2023] [Indexed: 01/06/2024]
Abstract
Ischemia-reperfusion injury is an event concerning any organ under a procedure of transplantation. The early result of ischemia is hypoxia, which causes malfunction of mitochondria and decrease in cellular ATP. This leads to disruption of cellular metabolism. Reperfusion also results in cell damage due to reoxygenation and increased production of reactive oxygen species, and later by induced inflammation. In damaged and hypoxic cells, the endoplasmic reticulum (ER) stress pathway is activated by increased amount of damaged or misfolded proteins, accumulation of free fatty acids and other lipids due to inability of their oxidation (lipotoxicity). ER stress is an adaptive response and a survival pathway, however, its prolonged activity eventually lead to induction of apoptosis. Sustaining cell functionality in stress conditions is a great challenge for transplant surgeons as it is crucial for maintaining a desired level of graft vitality. Pathways counteracting negative consequences of ischemia-reperfusion are autophagy and lipid droplets (LD) metabolism. Autophagy remove damaged organelles and molecules driving them to lysosomes, digested simpler compounds are energy source for the cell. Mitophagy and ER-phagy results in improvement of cell energetic balance and alleviation of ER stress. This is important in sustaining metabolic homeostasis and thus cell survival. LD metabolism is connected with autophagy as LD are degraded by lipophagy, a source of free fatty acids and glycerol-thus autophagy and LD can readily remove lipotoxic compounds in the cell. In conclusion, monitoring and pharmaceutic regulation of those pathways during transplantation procedure might result in increased/improved vitality of transplanted organ.
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Affiliation(s)
- Daria Kamińska
- Department of Radiotherapy, Maria Sklodowska-Curie National Research Institute of Oncology, Warszawa, Poland
| | - Michał Skrzycki
- Chair and Department of Biochemistry, Medical University of Warsaw, Warszawa, Poland
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Lu Z, Xu S, Liao H, Zhang Y, Lu Z, Li Z, Chen Y, Guo F, Tang F, He Z. Identification of signature genes for renal ischemia‒reperfusion injury based on machine learning and WGCNA. Heliyon 2023; 9:e21151. [PMID: 37928383 PMCID: PMC10622618 DOI: 10.1016/j.heliyon.2023.e21151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 09/04/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023] Open
Abstract
Background As an inevitable event after kidney transplantation, ischemia‒reperfusion injury (IRI) can lead to a decrease in kidney transplant success. The search for signature genes of renal ischemia‒reperfusion injury (RIRI) is helpful in improving the diagnosis and guiding clinical treatment. Methods We first downloaded 3 datasets from the GEO database. Then, differentially expressed genes (DEGs) were identified and applied for functional enrichment analysis. After that, we performed three machine learning methods, including random forest (RF), Lasso regression analysis, and support vector machine recursive feature elimination (SVM-RFE), to further predict candidate genes. WGCNA was also executed to screen candidate genes from DEGs. Then, we took the intersection of candidate genes to obtain the signature genes of RIRI. Receiver operating characteristic (ROC) analysis was conducted to measure the predictive ability of the signature genes. Kaplan‒Meier analysis was used for association analysis between signature genes and graft survival. Verifying the expression of signature genes in the ischemia cell model. Results A total of 117 DEGs were screened out. Subsequently, RF, Lasso regression analysis, SVM-RFE and WGCNA identified 17, 25, 18 and 74 candidate genes, respectively. Finally, 3 signature genes (DUSP1, FOS, JUN) were screened out through the intersection of candidate genes. ROC analysis suggested that the 3 signature genes could well diagnose and predict RIRI. Kaplan‒Meier analysis indicated that patients with low FOS or JUN expression had a longer OS than those with high FOS or JUN expression. Finally, we validated using the ischemia cell model that compared to the control group, the expression level of JUN increased under hypoxic conditions. Conclusions Three signature genes (DUSP1, FOS, JUN) offer a good prediction for RIRI outcome and may serve as potential therapeutic targets for RIRI intervention, especially JUN. The prediction of graft survival by FOS and JUN may improve graft survival in patients with RIRI.
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Affiliation(s)
- Zechao Lu
- Department of Urology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
| | - Senkai Xu
- The Sixth Clinical College of Guangzhou Medical University, Guangzhou, Guangdong, 511436, China
| | - Haiqin Liao
- The Second Clinical College of Guangzhou Medical University, Guangzhou, Guangdong, 511436, China
| | - Yixin Zhang
- Department of Urology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Clinical Research Center for Urological Diseases, Guangzhou, Guangdong, China
| | - Zeguang Lu
- The Second Clinical College of Guangzhou Medical University, Guangzhou, Guangdong, 511436, China
| | - Zhibiao Li
- Department of Urology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
| | - Yushu Chen
- Department of Urology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
| | - Feng Guo
- Department of Urology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
| | - Fucai Tang
- Department of Urology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
| | - Zhaohui He
- Department of Urology, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, 518033, China
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Xie R, Liu L, Lu X, He C, Li G. Identification of the diagnostic genes and immune cell infiltration characteristics of gastric cancer using bioinformatics analysis and machine learning. Front Genet 2023; 13:1067524. [PMID: 36685898 PMCID: PMC9845288 DOI: 10.3389/fgene.2022.1067524] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/05/2022] [Indexed: 01/06/2023] Open
Abstract
Background: Finding reliable diagnostic markers for gastric cancer (GC) is important. This work uses machine learning (ML) to identify GC diagnostic genes and investigate their connection with immune cell infiltration. Methods: We downloaded eight GC-related datasets from GEO, TCGA, and GTEx. GSE13911, GSE15459, GSE19826, GSE54129, and GSE79973 were used as the training set, GSE66229 as the validation set A, and TCGA & GTEx as the validation set B. First, the training set screened differentially expressed genes (DEGs), and gene ontology (GO), kyoto encyclopedia of genes and genomes (KEGG), disease Ontology (DO), and gene set enrichment analysis (GSEA) analyses were performed. Then, the candidate diagnostic genes were screened by LASSO and SVM-RFE algorithms, and receiver operating characteristic (ROC) curves evaluated the diagnostic efficacy. Then, the infiltration characteristics of immune cells in GC samples were analyzed by CIBERSORT, and correlation analysis was performed. Finally, mutation and survival analyses were performed for diagnostic genes. Results: We found 207 up-regulated genes and 349 down-regulated genes among 556 DEGs. gene ontology analysis significantly enriched 413 functional annotations, including 310 biological processes, 23 cellular components, and 80 molecular functions. Six of these biological processes are closely related to immunity. KEGG analysis significantly enriched 11 signaling pathways. 244 diseases were closely related to Ontology analysis. Multiple entries of the gene set enrichment analysis analysis were closely related to immunity. Machine learning screened eight candidate diagnostic genes and further validated them to identify ABCA8, COL4A1, FAP, LY6E, MAMDC2, and TMEM100 as diagnostic genes. Six diagnostic genes were mutated to some extent in GC. ABCA8, COL4A1, LY6E, MAMDC2, TMEM100 had prognostic value. Conclusion: We screened six diagnostic genes for gastric cancer through bioinformatic analysis and machine learning, which are intimately related to immune cell infiltration and have a definite prognostic value.
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Affiliation(s)
- Rongjun Xie
- Department of General Surgery, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China,Department of General Surgery, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, China,Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Longfei Liu
- Department of General Surgery, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Xianzhou Lu
- Department of General Surgery, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Chengjian He
- Department of Intensive Care Medicine, Affiliated Nanhua Hospital, Hengyang Medical School, University of South China, Hengyang, China
| | - Guoxin Li
- Department of General Surgery, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China,Guangdong Provincial Key Laboratory of Precision Medicine for Gastrointestinal Tumor, Nanfang Hospital, The First School of Clinical Medicine, Southern Medical University, Guangzhou, China,*Correspondence: Guoxin Li,
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Naringenin Alleviates Renal Ischemia Reperfusion Injury by Suppressing ER Stress-Induced Pyroptosis and Apoptosis through Activating Nrf2/HO-1 Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5992436. [PMID: 36262286 PMCID: PMC9576412 DOI: 10.1155/2022/5992436] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/08/2022] [Accepted: 09/15/2022] [Indexed: 11/29/2022]
Abstract
Endoplasmic reticulum (ER) stress, pyroptosis, and apoptosis are critical molecular events in the occurrence and progress of renal ischemia reperfusion (I/R) injury. Naringenin (4′,5,7-trihydroxyflavanone) is one of the most widely consumed flavonoids with powerful antioxidant and anti-inflammatory activities. However, whether naringenin is able to relieve renal I/R injury and corresponding mechanisms have not been fully clarified. This study was aimed at exploring its role and relevant mechanisms in renal I/R injury. The C57Bl/6 mice were randomly assigned to receive administration with naringenin (50 mg/kg/d) or sterile saline (1.0 mL/d) for 3 d by gavage and suffered from renal I/R surgery. One specific ER stress inhibitor, 4-phenylbutyric acid (4-PBA, 100 mg/kg/d), was intraperitoneally administered to validate the regulation of ER stress on pyroptosis and apoptosis. Cultured HK-2 cells went through the process of hypoxia/reoxygenation (H/R) to perform cellular experiments with the incubation of naringenin (200 μM), 4-PBA (5 mM), or brusatol (400 nM). The animal results verified that naringenin obviously relieved renal I/R injury, while it refined renal function and attenuated tissue structural damage. Furthermore, naringenin treatment inhibited I/R-induced ER stress as well as pyroptosis and apoptosis as indicated by decreased levels of specific biomarkers such as GRP78, CHOP, caspase-12, NLRP3, ASC, caspase-11, caspase-4, caspase-1, IL-1β, GSDMD-N, BAX, and cleaved caspase-3 in animals and HK-2 cells. Besides, the upregulated expression of Nrf2 and HO-1 proteins after naringenin treatment suggested that naringenin activated the Nrf2/HO-1 signaling pathway, which was again authenticated by the usage of brusatol (Bru), one unique inhibitor of the Nrf2 pathway. Importantly, the application of 4-PBA showed that renal I/R-generated pyroptosis and apoptosis were able to be regulated by ER stress in vivo and in vitro. In conclusion, naringenin suppressed ER stress by activating Nrf2/HO-1 signaling pathway and further alleviated pyroptosis and apoptosis to protect renal against I/R injury.
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Cui X, Shan T, Qiao L. Collagen type Ⅳ alpha 1 (COL4A1) silence hampers the invasion, migration and epithelial-mesenchymal transition (EMT) of gastric cancer cells through blocking Hedgehog signaling pathway. Bioengineered 2022; 13:8972-8981. [PMID: 35297303 PMCID: PMC9161915 DOI: 10.1080/21655979.2022.2053799] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Gastric cancer (GC), which features high prevalence and mortality rate, remains the third most lethal cancer worldwide. The paper was designed to explore the impacts of collagen type Ⅳ alpha 1 (COL4A1) on GC, along with its potential mechanism. The mRNA and protein expressions of COL4A1 in GC cells were assessed by RT-qPCR and western blot. After depleting COL4A1, RT-qPCR and western blot were conducted again to check the transfection efficacy. With the application of CCK-8, wound healing and transwell, the capabilities of cells to proliferate, migrate and invade were appraised, respectively. Moreover, western blot tested the protein levels of factors involved in migration, proliferation, epithelial mesenchymal transition (EMT) and Hedgehog signaling. As a result, COL4A1 displayed elevated expression in GC tissues and cells while its knockdown inhibited the cell viability, migration, invasion and EMT in GC. According to Gene Set Enrichment Analysis (GSEA), COL4A1 was involved in the regulation of Hedgehog signaling pathway, which was then further verified by the detection of Hedgehog-related proteins. To figure out the relationship between COL4A1 and Hedgehog signaling pathway, we used purmorphamine, an agonist of Hedgehog, to treat GC cells, finding that COL4A1 blocked Hedgehog signaling to inhibit the aggressive phenotypes of GC cells. In short, COL4A1 silence was testified to exhibit suppressive effects on the malignant process of GC, suggesting that COL4A1 might be a potent hallmark for GC therapy.
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Affiliation(s)
- Xijuan Cui
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi 'an, Shaanxi 710061, P.R. China
| | - Tao Shan
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi 'an, Shaanxi 710061, P.R. China
| | - Lina Qiao
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi 'an, Shaanxi 710061, P.R. China
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Zeng CW, Sheu JC, Tsai HJ. Hypoxia-Responsive Subtype Cells Differentiate Into Neurons in the Brain of Zebrafish Embryos Exposed to Hypoxic Stress. Cell Transplant 2022; 31:9636897221077930. [PMID: 35225023 PMCID: PMC8894973 DOI: 10.1177/09636897221077930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Severe hypoxia results in complete loss of central nervous system (CNS) function in mammals, while several other vertebrates, such as zebrafish, can regenerate after hypoxia-induced injury of CNS. Since the cellular mechanism involved in this remarkable feature of other vertebrates is still unclear, we studied the cellular regeneration of zebrafish brain, employing zebrafish embryos from transgenic line huORFZ exposed to hypoxia and then oxygen recovery. GFP-expressing cells, identified in some cells of the CNS, including some brain cells, were termed as hypoxia-responsive recovering cells (HrRCs). After hypoxia, HrRCs did not undergo apoptosis, while most non-GFP-expressing cells, including neurons, did. Major cell types of HrRCs found in the brain of zebrafish embryos induced by hypoxic stress were neural stem/progenitor cells (NSPCs) and radial glia cells (RGs), that is, subtypes of NSPCs (NSPCs-HrRCs) and RGs (RGs-HrRCs) that were induced by and sensitively responded to hypoxic stress. Interestingly, among HrRCs, subtypes of NSPCs- or RGs-HrRCs could proliferate and differentiate into early neurons during oxygen recovery, suggesting that these subtype cells might play a critical role in brain regeneration of zebrafish embryos after hypoxic stress.
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Affiliation(s)
- Chih-Wei Zeng
- Institute of Molecular and Cellular Biology, College of Life Science, National Taiwan University, Taipei.,Liver Disease Prevention and Treatment Research Foundation, Taipei
| | - Jin-Chuan Sheu
- Liver Disease Prevention and Treatment Research Foundation, Taipei
| | - Huai-Jen Tsai
- School of Medicine, Fu Jen Catholic University, New Taipei City.,Department of Life Science, Fu Jen Catholic University, New Taipei City
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The Neuroprotective Effects of GPR4 Inhibition through the Attenuation of Caspase Mediated Apoptotic Cell Death in an MPTP Induced Mouse Model of Parkinson's Disease. Int J Mol Sci 2021; 22:ijms22094674. [PMID: 33925146 PMCID: PMC8125349 DOI: 10.3390/ijms22094674] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 11/17/2022] Open
Abstract
The proton-activated G protein-coupled receptor (GPCR) 4 (GPR4) is constitutively active at physiological pH, and GPR4 knockout protected dopaminergic neurons from caspase-dependent mitochondria-associated apoptosis. This study explored the role of GPR4 in a 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP)-treated mouse model of Parkinson's disease (PD). In mice, subchronic MPTP administration causes oxidative stress-induced apoptosis in the dopaminergic neurons of the substantia nigra pars compacta (SNpc), resulting in motor deficits. NE52-QQ57, a selective GPR4 antagonist, reduced dopaminergic neuronal loss in MPTP-treated mice, improving motor and memory functions. MPTP and NE52-QQ57 co-treatment in mice significantly decreased pro-apoptotic marker Bax protein levels and increased anti-apoptotic marker Bcl-2 protein levels in the SNpc and striatum. MPTP-induced caspase 3 activation and poly (ADP-ribose) polymerase (PARP) cleavage significantly decreased in the SNpc and striatum of mice co-treated with NE52-QQ57. MPTP and NE52-QQ57 co-treatment significantly increased tyrosine hydroxylase (TH)-positive cell numbers in the SNpc and striatum compared with MPTP alone. NE52-QQ57 and MPTP co-treatment improved rotarod and pole test-assessed motor performance and improved Y-maze test-assessed spatial memory. Our findings suggest GPR4 may represent a potential therapeutic target for PD, and GPR4 activation is involved in caspase-mediated neuronal apoptosis in the SNpc and striatum of MPTP-treated mice.
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Novel Insight into the Role of Endoplasmic Reticulum Stress in the Pathogenesis of Myocardial Ischemia-Reperfusion Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5529810. [PMID: 33854692 PMCID: PMC8019635 DOI: 10.1155/2021/5529810] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 02/28/2021] [Accepted: 03/17/2021] [Indexed: 02/06/2023]
Abstract
Impaired function of the endoplasmic reticulum (ER) is followed by evolutionarily conserved cell stress responses, which are employed by cells, including cardiomyocytes, to maintain and/or restore ER homeostasis. ER stress activates the unfolded protein response (UPR) to degrade and remove abnormal proteins from the ER lumen. Although the UPR is an intracellular defense mechanism to sustain cardiomyocyte viability and heart function, excessive activation initiates ER-dependent cardiomyocyte apoptosis. Myocardial ischemia/reperfusion (I/R) injury is a pathological process occurring during or after revascularization of ischemic myocardium. Several molecular mechanisms contribute to the pathogenesis of cardiac I/R injury. Due to the dual protective/degradative effects of ER stress on cardiomyocyte viability and function, it is of interest to understand the basic concepts, regulatory signals, and molecular processes involved in ER stress following myocardial I/R injury. In this review, therefore, we present recent findings related to the novel components of ER stress activation. The complex effects of ER stress and whether they mitigate or exacerbate myocardial I/R injury are summarized to serve as the basis for research into potential therapies for cardioprotection through control of ER homeostasis.
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Xu Y, Li D, Wu J, Zhang M, Shao X, Xu L, Tang L, Zhu M, Ni Z, Zhang M, Mou S. Farnesoid X receptor promotes renal ischaemia-reperfusion injury by inducing tubular epithelial cell apoptosis. Cell Prolif 2021; 54:e13005. [PMID: 33594777 PMCID: PMC8016637 DOI: 10.1111/cpr.13005] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 01/15/2021] [Accepted: 01/22/2021] [Indexed: 12/11/2022] Open
Abstract
Purpose We investigated the role of farnesoid X receptor (FXR), a ligand‐dependent transcription factor, in renal ischaemia‐reperfusion (I/R) injury. Materials and Methods We performed unilateral renal I/R model in FXR knockout (Fxr−/−) and wild‐type (WT) mice in vivo and a hypoxia‐reoxygenation (H/R) model in vitro. The pathways by which FXR induces apoptosis were detected using a proteome profiler array. The effects of FXR on apoptosis were evaluated using immunoblotting, TUNEL assays and flow cytometry. Results Compared with WT mice, Fxr−/− mice showed improved renal function and reduced tubular injury scores and apoptosis. Consistent with the in vivo results, the silencing of FXR decreased the number of apoptotic HK‐2 cells after H/R, while FXR overexpression aggravated apoptosis. Notably, bone marrow transplantation (BMT) and immunohistochemistry experiments revealed the involvement of FXR in the tubular epithelium rather than in inflammatory cells. Furthermore, in vivo and in vitro studies demonstrated that FXR deficiency increased phosphorylated Bcl‐2 agonist of cell death (p‐Bad) expression levels and the ratio of Bcl‐2/Bcl‐xL to Bax expression in the kidney. Treatment with wortmannin, which reduced p‐Bad expression, inhibited the effects of FXR deficiency and eliminated the tolerance of Fxr−/− mouse kidneys to I/R injury. Conclusions These results established the pivotal importance of FXR inactivation in tubular epithelial cells after I/R injury. FXR may promote the apoptosis of renal tubular epithelial cells by inhibiting PI3k/Akt‐mediated Bad phosphorylation to cause renal I/R damage.
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Affiliation(s)
- Yao Xu
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Dawei Li
- Department of Urology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Jiajin Wu
- Department of Urology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Minfang Zhang
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Xinghua Shao
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Longmei Xu
- Department of Urology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Lumin Tang
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Minyan Zhu
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Zhaohui Ni
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Ming Zhang
- Department of Urology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Shan Mou
- Department of Nephrology, School of Medicine, Renji Hospital, Shanghai Jiaotong University, Shanghai, China
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Renal Protective Effect of Beluga Lentil Pretreatment for Ischemia-Reperfusion Injury. BIOMED RESEARCH INTERNATIONAL 2021; 2021:6890679. [PMID: 33604384 PMCID: PMC7868138 DOI: 10.1155/2021/6890679] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 12/24/2020] [Accepted: 01/12/2021] [Indexed: 11/18/2022]
Abstract
Materials and Methods Mice were divided into four groups: normal, untreated, low- (2 mg), and high-dose (8 mg) beluga lentil treatment groups. Beluga lentil was orally administered for 2 weeks, followed by bilateral renal ischemia for 20 min and reperfusion for 30 min. Blood samples and kidney tissues were collected and analyzed to investigate renal function, histopathology, epithelial and endothelial cell damage, apoptosis, oxidative stress, and inflammatory responses. Results The pretreated groups maintained renal function, with significantly lower blood urea nitrogen (BUN) and creatinine levels, compared with the other groups. The histopathological analysis showed reduced proximal tubule injury and decreased injury-related molecule (kidney injury molecule 1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL)) secretion in the pretreated groups compared with the other groups. Terminal deoxynucleotidyl transferase dUTP nick-end labeling- (TUNEL-) positive cells and the secretion of apoptosis-related molecules (Fas and caspase 3) were significantly reduced in the pretreated groups compared with the other groups. The pretreated groups showed positive microvessel-associated gene (cluster of differentiation (CD31)) expression and negative adhesion molecule (intracellular adhesion molecule 1 (ICAM-1)) expression. An antioxidant effect was observed in the pretreatment groups, with reduced malonaldehyde (MDA) expression and increased antioxidant enzyme (superoxide dismutase (SOD), catalase (CAT), glutathione (GSH), and glutathione peroxidase (GPx)) secretion. In the pretreated groups, F4/80+ macrophages and CD4+ T cell infiltration were inhibited and proinflammatory cytokine (interleukin- (IL-) 1β, IL-6, and tumor necrosis factor- (TNF-) α) levels decreased; however, the levels of anti-inflammatory cytokines (transforming growth factor- (TGF-) β, IL-10, and IL-22) increased. Conclusions Beluga lentil pretreatment demonstrated protective effects against I/R-induced renal damage, via antiapoptotic, anti-inflammatory, and antioxidant activities.
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GPR4 Knockout Improves the Neurotoxin-Induced, Caspase-Dependent Mitochondrial Apoptosis of the Dopaminergic Neuronal Cell. Int J Mol Sci 2020; 21:ijms21207517. [PMID: 33053856 PMCID: PMC7589616 DOI: 10.3390/ijms21207517] [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: 09/11/2020] [Revised: 10/04/2020] [Accepted: 10/08/2020] [Indexed: 12/26/2022] Open
Abstract
In Parkinson’s disease, mitochondrial oxidative stress-mediated apoptosis is a major cause of dopaminergic neuronal loss in the substantia nigra (SN). G protein-coupled receptor 4 (GPR4), previously recognised as an orphan G protein coupled-receptor (GPCR), has recently been claimed as a member of the group of proton-activated GPCRs. Its activity in neuronal apoptosis, however, remains undefined. In this study, we investigated the role of GPR4 in the 1-methyl-4-phenylpyridinium ion (MPP+) and hydrogen peroxide (H2O2)-treated apoptotic cell death of stably GPR4-overexpressing and stably GPR4-knockout human neuroblastoma SH-SY5Y cells. In GPR4-OE cells, MPP+ and H2O2 were found to significantly increase the expression levels of both mRNA and proteins of the pro-apoptotic Bcl-2-associated X protein (Bax) genes, while they decreased the anti-apoptotic B-cell lymphoma 2 (Bcl-2) genes. In addition, MPP+ treatment activated Caspase-3, leading to the cleavage of poly (ADP-ribose) polymerase (PARP) and decreasing the mitochondrial membrane potential (ΔΨm) in GPR4-OE cells. In contrast, H2O2 treatment significantly increased the intracellular calcium ions (Ca2+) and reactive oxygen species (ROS) in GPR4-OE cells. Further, chemical inhibition by NE52-QQ57, a selective antagonist of GPR4, and knockout of GPR4 by clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 decreased the Bax/Bcl-2 ratio and ROS generation, and stabilised the ΔΨm, thus protecting the SH-SY5Y cells from MPP+- or H2O2-induced apoptotic cell death. Moreover, the knockout of GPR4 decreased the proteolytic degradation of phosphatidylinositol biphosphate (PIP2) and subsequent release of the endoplasmic reticulum (ER)-stored Ca2+ in the cytosol. Our results suggest that the pharmacological inhibition or genetic deletion of GPR4 improves the neurotoxin-induced caspase-dependent mitochondrial apoptotic pathway, possibly through the modulation of PIP2 degradation-mediated calcium signalling. Therefore, GPR4 presents a potential therapeutic target for neurodegenerative disorders such as Parkinson’s disease.
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Zhang J, Bi J, Ren Y, Du Z, Li T, Wang T, Zhang L, Wang M, Wei S, Lv Y, Wu R. Involvement of GPX4 in irisin's protection against ischemia reperfusion-induced acute kidney injury. J Cell Physiol 2020; 236:931-945. [PMID: 32583428 DOI: 10.1002/jcp.29903] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 05/21/2020] [Accepted: 06/13/2020] [Indexed: 12/15/2022]
Abstract
Ischemia reperfusion (I/R)-induced acute kidney injury (AKI) is a common and serious condition. Irisin, an exercise-induced hormone, improves mitochondrial function and reduces reactive oxygen species (ROS) production. Glutathione peroxidase 4 (GPX4) is a key regulator of ferroptosis and its inactivation aggravates renal I/R injury by inducing ROS production. However, the effect of irisin on GPX4 and I/R-induced AKI is still unknown. To study this, male adult mice were subjected to renal I/R by occluding bilateral renal hilum for 30 min, which was followed by 24 hr reperfusion. Our results showed serum irisin levels were decreased in renal I/R mice. Irisin (250 μg/kg) treatment alleviated renal injury, downregulated inflammatory response, improved mitochondrial function, and reduced ER stress and oxidative stress after renal I/R, which were associated with upregulation of GPX4. Treated with RSL3 (a GPX4 inhibitor) abolished irisin's protective effect. Thus, irisin attenuates I/R-induced AKI through upregulating GPX4.
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Affiliation(s)
- Jia Zhang
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Jianbin Bi
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yifan Ren
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Zhaoqing Du
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Teng Li
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Tao Wang
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Lin Zhang
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Mengzhou Wang
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Shasha Wei
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Yi Lv
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.,Department of Hepatobiliary Surgery, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Rongqian Wu
- National Local Joint Engineering Research Center for Precision Surgery & Regenerative Medicine, Shaanxi Provincial Center for Regenerative Medicine and Surgical Engineering, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Dufour L, Ferhat M, Robin A, Inal S, Favreau F, Goujon JM, Hauet T, Gombert JM, Herbelin A, Thierry A. [Ischemia-reperfusion injury after kidney transplantation]. Nephrol Ther 2020; 16:388-399. [PMID: 32571740 DOI: 10.1016/j.nephro.2020.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Ischemia-reperfusion injury is an inescapable phenomenon in kidney transplantation. It combines lesional processes of biochemical origin associated with oxydative stress and of immunological origin in connection with the recruitment and activation of innate immunity cells. Histological lesions associate acute tubular necrosis and interstitial œdema, which can progress to interstitial fibrosis. The extent of these lesions depends on donor characteristics (age, expanded criteria donor, etc.) and cold ischemia time. In the short term, ischemia-reperfusion results in delayed recovery of graft function. Cold ischemia time also impacts long-term graft survival. Preclinical models, such as murine and porcine models, have furthered understanding of the pathophysiological mechanisms of ischemia-reperfusion injury. Due to its renal anatomical proximity to humans, the porcine model is relevant to assessment of the molecules administered to a donor or recipient, and also of additives to preservation solutions. Different donor resuscitation and graft perfusion strategies can be studied. In humans, prevention of ischemia-reperfusion injury is a research subject as concerns donor conditioning, additive molecules in preservation solutions, graft reperfusion modalities and choice of the molecules administered to the recipient. Pending significant advances in research, the goal is to achieve the shortest possible cold ischemia time.
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Affiliation(s)
- Léa Dufour
- Service de néphrologie-hémodialyse-transplantation rénale, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Maroua Ferhat
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Aurélie Robin
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Sofiane Inal
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Service de biochimie, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Frédéric Favreau
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Jean-Michel Goujon
- Service d'anatomopathologie, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Thierry Hauet
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Service de biochimie, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Fédération hospitalo-universitaire de transplantation Survival Optimization in Organ Transplantation (Support) Tours Poitiers Limoges, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Plateforme Infrastructures en biologie, santé et agronomie (Ibisa) Modélisation préclinique - innovation chirurgicale et technologique (Mopict), 86000 Poitiers cedex, France
| | - Jean-Marc Gombert
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Service d'immunologie, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - André Herbelin
- Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France
| | - Antoine Thierry
- Service de néphrologie-hémodialyse-transplantation rénale, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Inserm, U1082 laboratoire Irtomit, 2, rue de la Milétrie, 86021 Poitiers cedex, France; Fédération hospitalo-universitaire de transplantation Survival Optimization in Organ Transplantation (Support) Tours Poitiers Limoges, CHU de Poitiers, 2, rue de la Milétrie, 86021 Poitiers cedex, France.
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16
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Krewson EA, Sanderlin EJ, Marie MA, Akhtar SN, Velcicky J, Loetscher P, Yang LV. The Proton-Sensing GPR4 Receptor Regulates Paracellular Gap Formation and Permeability of Vascular Endothelial Cells. iScience 2020; 23:100848. [PMID: 32058960 PMCID: PMC6997876 DOI: 10.1016/j.isci.2020.100848] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 11/27/2019] [Accepted: 01/13/2020] [Indexed: 01/31/2023] Open
Abstract
GPR4 is a pH-sensing G protein-coupled receptor highly expressed in vascular endothelial cells and can be activated by protons in the inflamed tissue microenvironment. Herein, we report that acidosis-induced GPR4 activation increases paracellular gap formation and permeability of vascular endothelial cells through the Gα12/13/Rho GTPase signaling pathway. Evaluation of GPR4 in the inflammatory response using the acute hindlimb ischemia-reperfusion mouse model revealed that GPR4 mediates tissue edema, inflammatory exudate formation, endothelial adhesion molecule expression, and leukocyte infiltration in the inflamed tissue. Genetic knockout and pharmacologic inhibition of GPR4 alleviate tissue inflammation. These results suggest GPR4 is a pro-inflammatory receptor and could be targeted for therapeutic intervention. Acidosis/GPR4 regulates endothelial paracellular gap formation and permeability GPR4 exacerbates inflammation by increasing tissue edema and leukocyte infiltration Pharmacological inhibition of GPR4 reduces inflammatory responses
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Affiliation(s)
- Elizabeth A Krewson
- Department of Anatomy and Cell Biology, East Carolina University, Greenville, NC 27834, USA
| | - Edward J Sanderlin
- Department of Internal Medicine, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
| | - Mona A Marie
- Department of Internal Medicine, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA
| | - Shayan Nik Akhtar
- Department of Anatomy and Cell Biology, East Carolina University, Greenville, NC 27834, USA
| | - Juraj Velcicky
- Novartis Institutes for BioMedical Research, 4002 Basel, Switzerland
| | - Pius Loetscher
- Novartis Institutes for BioMedical Research, 4002 Basel, Switzerland
| | - Li V Yang
- Department of Anatomy and Cell Biology, East Carolina University, Greenville, NC 27834, USA; Department of Internal Medicine, Brody School of Medicine, East Carolina University, Greenville, NC 27834, USA.
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17
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Organelle crosstalk in the kidney. Kidney Int 2019; 95:1318-1325. [DOI: 10.1016/j.kint.2018.11.035] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 11/07/2018] [Accepted: 11/12/2018] [Indexed: 01/24/2023]
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18
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Melis N, Thuillier R, Steichen C, Giraud S, Sauvageon Y, Kaminski J, Pelé T, Badet L, Richer JP, Barrera-Chimal J, Jaisser F, Tauc M, Hauet T. Emerging therapeutic strategies for transplantation-induced acute kidney injury: protecting the organelles and the vascular bed. Expert Opin Ther Targets 2019; 23:495-509. [PMID: 31022355 DOI: 10.1080/14728222.2019.1609451] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Renal ischemia-reperfusion injury (IRI) is a significant clinical challenge faced by clinicians in a broad variety of clinical settings such as perioperative and intensive care. Renal IRI induced acute kidney injury (AKI) is a global public health concern associated with high morbidity, mortality, and health-care costs. Areas covered: This paper focuses on the pathophysiology of transplantation-related AKI and recent findings on cellular stress responses at the intersection of 1. The Unfolded protein response; 2. Mitochondrial dysfunction; 3. The benefits of mineralocorticoid receptor antagonists. Lastly, perspectives are offered to the readers. Expert opinion: Renal IRI is caused by a sudden and temporary impairment of blood flow to the organ. Defining the underlying cellular cascades involved in IRI will assist us in the identification of novel interventional targets to attenuate IRI with the potential to improve transplantation outcomes. Targeting mitochondrial function and cellular bioenergetics upstream of cellular damage may offer several advantages compared to targeting downstream inflammatory and fibrosis processes. An improved understanding of the cellular pathophysiological mechanisms leading to kidney injury will hopefully offer improved targeted therapies to prevent and treat the injury in the future.
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Affiliation(s)
- Nicolas Melis
- a Laboratory of Cellular and Molecular Biology , Center for Cancer Research, National Cancer Institute , Bethesda , MD , USA
| | - Raphael Thuillier
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France.,d CHU Poitiers , Service de Biochimie , Poitiers , France.,e Fédération Hospitalo-Universitaire SUPORT , Poitiers , France
| | - Clara Steichen
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France
| | - Sebastien Giraud
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France.,d CHU Poitiers , Service de Biochimie , Poitiers , France
| | - Yse Sauvageon
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France
| | - Jacques Kaminski
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France
| | - Thomas Pelé
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France
| | - Lionel Badet
- f Faculté de Médecine , Université Claude Bernard Lyon 1 , Villeurbanne , France.,g Hospices Civiles de Lyon , Service d'urologie et de chirurgie de la transplantation , Lyon , France
| | - Jean Pierre Richer
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France.,h CHU de Poitiers , Service de chirurgie générale et endocrinienne , Poitiers , France.,i Faculté de Médecine et de Pharmacie , ABS Lab (Laboratoire d'Anatomie, Biomécanique et Simulation), Université de Poitiers , Poitiers , France
| | - Jonatan Barrera-Chimal
- j Laboratorio de Fisiología Cardiovascular y Trasplante Renal, Unidad de Medicina Traslacional , Instituto de Investigaciones Biomédicas, UNAM and Instituto Nacional de Cardiología Ignacio Chávez , Mexico City , Mexico
| | - Frédéric Jaisser
- k INSERM, UMRS 1138, Team 1 , Centre de Recherche des Cordeliers, Pierre et Marie Curie University, Paris, Descartes University , Paris , France
| | - Michel Tauc
- l LP2M CNRS-UMR7370, LabEx ICST , Medical Faculty, Université Côte d'Azur , Nice , France
| | - Thierry Hauet
- b IRTOMIT , Inserm U1082 , Poitiers , France.,c Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France.,d CHU Poitiers , Service de Biochimie , Poitiers , France.,e Fédération Hospitalo-Universitaire SUPORT , Poitiers , France.,i Faculté de Médecine et de Pharmacie , ABS Lab (Laboratoire d'Anatomie, Biomécanique et Simulation), Université de Poitiers , Poitiers , France.,m IBiSA Plateforme 'plate-forme MOdélisation Préclinique - Innovation Chirurgicale et Technologique (MOPICT)', Domaine Expérimental du Magneraud , Surgères , France
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Song N, Lu Z, Zhang J, Shi Y, Ning Y, Chen J, Jin S, Shen B, Fang Y, Zou J, Teng J, Chu XP, Shen L, Ding X. Acid-sensing ion channel 1a is involved in ischaemia/reperfusion induced kidney injury by increasing renal epithelia cell apoptosis. J Cell Mol Med 2019; 23:3429-3440. [PMID: 30793492 PMCID: PMC6484315 DOI: 10.1111/jcmm.14238] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/28/2018] [Accepted: 01/31/2019] [Indexed: 12/17/2022] Open
Abstract
Acidic microenvironment is commonly observed in ischaemic tissue. In the kidney, extracellular pH dropped from 7.4 to 6.5 within 10 minutes initiation of ischaemia. Acid‐sensing ion channels (ASICs) can be activated by pH drops from 7.4 to 7.0 or lower and permeates to Ca2+entrance. Thus, activation of ASIC1a can mediate the intracellular Ca2+ accumulation and play crucial roles in apoptosis of cells. However, the role of ASICs in renal ischaemic injury is unclear. The aim of the present study was to test the hypothesis that ischaemia increases renal epithelia cell apoptosis through ASIC1a‐mediated calcium entry. The results show that ASIC1a distributed in the proximal tubule with higher level in the renal tubule ischaemic injury both in vivo and in vitro. In vivo, Injection of ASIC1a inhibitor PcTx‐1 previous to ischaemia/reperfusion (I/R) operation attenuated renal ischaemic injury. In vitro, HK‐2 cells were pre‐treated with PcTx‐1 before hypoxia, the intracellular concentration of Ca2+, mitochondrial transmembrane potential (∆ψm) and apoptosis was measured. Blocking ASIC1a attenuated I/R induced Ca2+ overflow, loss of ∆ψm and apoptosis in HK‐2 cells. The results revealed that ASIC1a localized in the proximal tubular and contributed to I/R induced kidney injury. Consequently, targeting the ASIC1a may prove to be a novel strategy for AKI patients.
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Affiliation(s)
- Nana Song
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Zhihui Lu
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Jian Zhang
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Yiqin Shi
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Yichun Ning
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Jing Chen
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Shi Jin
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Bo Shen
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Yi Fang
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Jianzhou Zou
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Jie Teng
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
| | - Xiang-Ping Chu
- Department of Biomedical Sciences, School of Medicine, University of Missouri -Kansas City, Missouri
| | - Linlin Shen
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Xiaoqiang Ding
- Department of Nephrology, Zhongshan Hospital, Fudan University, Shanghai, China.,Shanghai Medical Center of Kidney, Shanghai, China.,Shanghai Institute of Kidney and Dialysis, Shanghai, China.,Shanghai Key Laboratory of Kidney and Blood Purification, Shanghai, China.,Hemodialysis quality control center of Shanghai, Shanghai, China
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Pérez-Pérez A, Toro A, Vilariño-Garcia T, Guadix P, Maymó J, Dueñas JL, Varone C, Sánchez-Margalet V. Leptin protects placental cells from apoptosis induced by acidic stress. Cell Tissue Res 2018; 375:733-742. [PMID: 30338379 DOI: 10.1007/s00441-018-2940-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/25/2018] [Indexed: 12/21/2022]
Abstract
Development of the human placenta is critical for a successful pregnancy. The placenta allows the exchange of oxygen and carbon dioxide and is crucial to manage acid-base balance within a narrow pH. It is known that low pH levels are a risk of apoptosis in several tissues. However, there has been little discussion about the effect of acidic stress in the placenta. Leptin is produced by the placenta with a trophic autocrine effect. Previous results of our group have demonstrated that leptin prevents apoptosis of trophoblast cells under different stress conditions such as serum deprivation and hyperthermia. The purpose of the present work is to evaluate acidic stress consequences in trophoblast explant survival and to determine leptin action in these conditions. For this objective, term human trophoblast explants were cultured at physiological pH (pH 7.4) and at acidic pH (pH 6.8) in the presence or absence of leptin. Western blot assays were performed to study the abundance of active caspase-3 and the p89 fragment of PARP-1. Pro-apoptotic and pro-survival members of Bcl-2 family, as Bax, t-Bid, and Bcl-2, were studied. Moreover, p53 pathway was also evaluated including Mdm-2, the main p53 regulator. Active caspase-3 and cleaved PARP-1 abundances were increased at low extracellular pH. Moreover, t-Bid levels were also augmented as well as p53 expression and phosphorylation on S46. Leptin treatment prevents the consequences of acidosis, decreasing p53 expression and increasing Mdm-2 expression. In summary, this work demonstrated for first time that low pH induces apoptosis of human trophoblast explants involving apoptotic intrinsic pathway, and leptin impairs this effect.
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Affiliation(s)
- Antonio Pérez-Pérez
- Department of Medical Biochemistry and Molecular Biology and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, Av. Dr. Fedriani 3, 41071, Seville, Spain
| | - Ayelén Toro
- Laboratory of Placental Molecular Physiology, Department of Biological Chemistry, School of Sciences, University of Buenos Aires, IQUIBICEN-CONICET, Ciudad Universitaria, Pab. 2, Buenos Aires, Argentina
| | - Teresa Vilariño-Garcia
- Department of Medical Biochemistry and Molecular Biology and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, Av. Dr. Fedriani 3, 41071, Seville, Spain
| | - Pilar Guadix
- Department of Obstetrics and gynecology, Virgen Macarena University Hospital, University of Seville, Seville, Spain
| | - Julieta Maymó
- Laboratory of Placental Molecular Physiology, Department of Biological Chemistry, School of Sciences, University of Buenos Aires, IQUIBICEN-CONICET, Ciudad Universitaria, Pab. 2, Buenos Aires, Argentina
| | - José Luis Dueñas
- Department of Obstetrics and gynecology, Virgen Macarena University Hospital, University of Seville, Seville, Spain
| | - Cecilia Varone
- Laboratory of Placental Molecular Physiology, Department of Biological Chemistry, School of Sciences, University of Buenos Aires, IQUIBICEN-CONICET, Ciudad Universitaria, Pab. 2, Buenos Aires, Argentina
| | - Víctor Sánchez-Margalet
- Department of Medical Biochemistry and Molecular Biology and Immunology, School of Medicine, Virgen Macarena University Hospital, University of Seville, Av. Dr. Fedriani 3, 41071, Seville, Spain.
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21
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Le Pape S, Pasini-Chabot O, Couturier P, Delpech PO, Volmer R, Quellard N, Ploeg R, Hauet T, Thuillier R. Decoding cold ischaemia time impact on kidney graft: the kinetics of the unfolded protein response pathways. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S873-S885. [PMID: 30280609 DOI: 10.1080/21691401.2018.1518908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The relationship between cold ischaemia time (CIT) and adverse outcome is now acknowledged. However, the underlying mechanisms remain to be defined, which slows the development of adapted therapeutics and diagnostics. We explored the impact of CIT in both preclinical and in vitro models of preservation. We determined that the endoplasmic reticulum (ER) and its stress response (unfolded protein response, UPR) were regulated in close association with CIT; the eIF2α-ATF4 pathway was inhibited early (1-8 h) at the detriment of cell survival, while the ATF6 pathway was activated late (12-24 h) and associated with cell death. The IRE1α-XBP1 branch was activated at reperfusion only if CIT extended beyond 8 h, and had a dual role on cell fate - deleterious through IRE1's RNase activity and beneficial through IRE1α other roles. Finally, the pro-apoptotic factor CHOP was a common target of both ATF6 and IRE1α pathways and was associated with elongated CIT and increased cell death. Microarray analysis of human transplanted kidney confirmed that UPR markers were regulated by CIT and that CHOP was associated with adverse outcome. We show that UPR could be a critical pathway explaining the relationship between CIT and graft outcome, highlighting the potential for UPR-based therapeutics and diagnostics to improve transplantation.
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Affiliation(s)
- Sylvain Le Pape
- a Inserm, U1082 IRTOMIT Poitiers , France.,b Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France
| | - Ophélie Pasini-Chabot
- a Inserm, U1082 IRTOMIT Poitiers , France.,c CHU Poitiers, Service de Biochimie , Pôle BIOSPHARM , Poitiers , France
| | - Pierre Couturier
- c CHU Poitiers, Service de Biochimie , Pôle BIOSPHARM , Poitiers , France
| | - Pierre-Olivier Delpech
- a Inserm, U1082 IRTOMIT Poitiers , France.,d CHU Poitiers, Service d'Urologie , Pôle DUNE , Poitiers , France
| | - Romain Volmer
- e University of Cambridge Metabolic Research Laboratories and National Institute for Health Research , Cambridge , UK
| | - Nathalie Quellard
- f CHU de Poitiers, Dept d'Anatomo-pathologie, Pôle BIOSPHARM , Poitiers , France
| | - Rutger Ploeg
- g Nuffield Department of Surgical Sciences , University of Oxford , Oxford , UK
| | - Thierry Hauet
- a Inserm, U1082 IRTOMIT Poitiers , France.,b Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France.,c CHU Poitiers, Service de Biochimie , Pôle BIOSPHARM , Poitiers , France.,g Nuffield Department of Surgical Sciences , University of Oxford , Oxford , UK.,h Institut national de la recherche agronomique , IBiSA Plateforme 'MOPICT', Unité expérimentale Génétique, expérimentations et systèmes innovants, Domaine Expérimental du Magneraud , Surgères , France
| | - Raphaël Thuillier
- a Inserm, U1082 IRTOMIT Poitiers , France.,b Faculté de Médecine et de Pharmacie , Université de Poitiers , Poitiers , France.,c CHU Poitiers, Service de Biochimie , Pôle BIOSPHARM , Poitiers , France
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22
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Dong B, Zhang X, Fan Y, Cao S, Zhang X. Acidosis promotes cell apoptosis through the G protein-coupled receptor 4/CCAAT/enhancer-binding protein homologous protein pathway. Oncol Lett 2018; 16:6735-6741. [PMID: 30405816 DOI: 10.3892/ol.2018.9478] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 12/20/2017] [Indexed: 02/04/2023] Open
Abstract
The aim of the present study was to investigate the effects of acidosis on the apoptosis of renal epithelial and endothelial cells, and the molecular pathways responsible for this. A human proximal tubular cell line, HK-2, and human umbilical vein endothelial cells (HUVECs), were transfected with control or G protein-coupled receptor 4 siRNA for 36 h. Cells were exposed to normal (pH 7.4) or acidic (pH 6.4) media. Western blot analysis was used to assess the protein expression levels of G protein-coupled receptor 4 (GPR4), CCAAT/enhancer-binding protein homologous protein (CHOP) and cleaved caspase-3. Cell apoptosis was examined using the TUNEL assay and the lactate dehydrogenase (LDH) release assay. Using these techniques, it was demonstrated that acidosis increased the protein expression levels of GPR4, CHOP, cleaved caspase-3 and intracellular cyclic adenosine monophosphate levels in hypoxia/reoxygenation (HR)-treated cell lines. Knockdown of GPR4 in HK-2 cells and HUVECs markedly reduced the protein expression levels of acidosis-mediated GPR4, CHOP and cleaved caspase-3, as well as the rate of cell apoptosis. Therefore, the results of the present study suggested that acidosis promotes the apoptosis of HK-2 cells and HUVECs by regulating the GPR4/CHOP pathway.
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Affiliation(s)
- Biao Dong
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Xiaolu Zhang
- Department of Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Yafeng Fan
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Songqiang Cao
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Xuepei Zhang
- Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
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23
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Arctigenin: A two-edged sword in ischemia/reperfusion induced acute kidney injury. Biomed Pharmacother 2018; 103:1127-1136. [DOI: 10.1016/j.biopha.2018.04.169] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 04/20/2018] [Accepted: 04/23/2018] [Indexed: 02/06/2023] Open
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24
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Wada S, Hatano E, Yoh T, Nakamura N, Okuda Y, Okuno M, Kasai Y, Iwaisako K, Seo S, Taura K, Uemoto S. CAAT/enhancer binding protein-homologous protein deficiency attenuates liver ischemia/reperfusion injury in mice. Liver Transpl 2018. [PMID: 29524333 DOI: 10.1002/lt.25053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ischemia/reperfusion injury (IRI) is one of the main causes of liver dysfunction after liver surgery. Involvement of endoplasmic reticulum (ER) stress in various diseases has been demonstrated, and CAAT/enhancer binding protein-homologous protein (CHOP) is a transcriptional regulator that is induced by ER stress. It is also a key regulator of ER stress-mediated apoptosis. The aim of this study was to investigate the role of CHOP in liver IRI. Wild type (WT) and CAAT/enhancer binding protein-homologous protein knockout (CHOP-/-) mice were subjected to 70% liver warm ischemia/reperfusion for 60 minutes. At different times after reperfusion, liver tissues and blood samples were collected for evaluation. Induction of ER stress including CHOP expression was ascertained. Liver damage was evaluated based on serum liver enzymes, liver histology, and neutrophil infiltration. Hepatocyte death including apoptosis was assessed. Liver warm IRI induced ER stress in both WT and CHOP-/- mice. In addition, CHOP expression was up-regulated in WT mice. At 6 hours after reperfusion, liver damage was attenuated in CHOP-/- mice. On the basis of terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling staining, apoptotic and necrotic cells were significantly reduced in CHOP-/- mice. CHOP deficiency also reduced the cleavage of caspase 3 and expression of the proapoptotic protein B cell lymphoma 2-associated X protein. Liver IRI induces CHOP expression, and CHOP deficiency attenuates liver IRI by inhibiting apoptosis. Elucidation of the function of CHOP in liver IRI may contribute to further investigation for a therapy against liver IRI associated with the ER stress pathway. Liver Transplantation 24 645-654 2018 AASLD.
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Affiliation(s)
- Seidai Wada
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Etsuro Hatano
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Surgery, Hyogo College of Medicine, Hyogo, Japan
| | - Tomoaki Yoh
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Naohiko Nakamura
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukihiro Okuda
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masayuki Okuno
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yosuke Kasai
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Keiko Iwaisako
- Department of Target Therapy Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Satoru Seo
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kojiro Taura
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shinji Uemoto
- Departments of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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25
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Kim Y, Park SJ, Manson SR, Molina CA, Kidd K, Thiessen-Philbrook H, Perry RJ, Liapis H, Kmoch S, Parikh CR, Bleyer AJ, Chen YM. Elevated urinary CRELD2 is associated with endoplasmic reticulum stress-mediated kidney disease. JCI Insight 2017; 2:92896. [PMID: 29212948 DOI: 10.1172/jci.insight.92896] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 11/01/2017] [Indexed: 02/06/2023] Open
Abstract
ER stress has emerged as a signaling platform underlying the pathogenesis of various kidney diseases. Thus, there is an urgent need to develop ER stress biomarkers in the incipient stages of ER stress-mediated kidney disease, when a kidney biopsy is not yet clinically indicated, for early therapeutic intervention. Cysteine-rich with EGF-like domains 2 (CRELD2) is a newly identified protein that is induced and secreted under ER stress. For the first time to our knowledge, we demonstrate that CRELD2 can serve as a sensitive urinary biomarker for detecting ER stress in podocytes or renal tubular cells in murine models of podocyte ER stress-induced nephrotic syndrome and tunicamycin- or ischemia-reperfusion-induced acute kidney injury (AKI), respectively. Most importantly, urinary CRELD2 elevation occurs in patients with autosomal dominant tubulointerstitial kidney disease caused by UMOD mutations, a prototypical tubular ER stress disease. In addition, in pediatric patients undergoing cardiac surgery, detectable urine levels of CRELD2 within postoperative 6 hours strongly associate with severe AKI after surgery. In conclusion, our study has identified CRELD2 as a potentially novel urinary ER stress biomarker with potential utility in early diagnosis, risk stratification, treatment response monitoring, and directing of ER-targeted therapies in selected patient subgroups in the emerging era of precision nephrology.
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Affiliation(s)
- Yeawon Kim
- Division of Nephrology, Department of Internal Medicine
| | - Sun-Ji Park
- Division of Nephrology, Department of Internal Medicine
| | - Scott R Manson
- Division of Urology, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Carlos Af Molina
- Division of Urology, Department of Surgery, Washington University School of Medicine, St. Louis, Missouri, USA.,Division of Urology, Department of Surgery and Anatomy, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Kendrah Kidd
- Section of Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | | | - Rebecca J Perry
- Section of Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Helen Liapis
- RTE Professor of Pathology & Immunology, Washington University School of Medicine, St. Louis, Missouri, USA.,Arkana Laboratories, Little Rock, Arkansas, USA
| | - Stanislav Kmoch
- Section of Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA.,Institute for Inherited Metabolic Disorders, Charles University in Prague, Prague, Czech Republic
| | - Chirag R Parikh
- Section of Nephrology, Yale University School of Medicine, New Haven, Connecticut.,Clinical Epidemiology Research Center, Veterans Affairs Medical Center, West Haven, Connecticut, USA
| | - Anthony J Bleyer
- Section of Nephrology, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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26
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GPR4 knockout improves renal ischemia-reperfusion injury and inhibits apoptosis via suppressing the expression of CHOP. Biochem J 2017; 474:4065-4074. [PMID: 29089376 DOI: 10.1042/bcj20170676] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2017] [Revised: 10/24/2017] [Accepted: 10/30/2017] [Indexed: 11/17/2022]
Abstract
The aim of the present study was to investigate the effects and molecular mechanisms of GPR4 (G-protein-coupled receptor 4) in cell apoptosis and renal ischemia-reperfusion (IR) injury in vivo and in vitro GPR4-/- mice and wild-type (WT) mice underwent renal IR or sham procedures. For hypoxia/reoxygenation (HR), human umbilical vein endothelial cells (HUVECs) were subjected to 4 h of hypoxia, followed by 6 h of reoxygenation. Renal histological changes were observed by periodic acid-Schiff staining and myeloperoxidase activity. Apoptosis was detected by TUNEL staining. GPR4, C/EBP-homologous protein (CHOP) and cleaved caspase-3 protein expressions were detected by western blot. Both GPR4 and CHOP were up-regulated after renal IR in mice. GPR4-knockout mice had significantly less renal damage and decreased TUNEL-positive cells than WT controls after IR. Bone marrow chimeras demonstrated that it was due to the GPR4 inactivation in renal parenchymal cells. Moreover, GPR4 was mainly expressed in endothelial cells after renal IR. GPR4 knockdown markedly inhibited CHOP expression and cell apoptosis in the HUVECs after HR treatment. GPR4 blockade attenuated renal injury after IR and reduced the cell apoptosis through the suppression of CHOP expression.
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27
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Su M, Ren S, Zhong W, Han X. Impact of propofol on renal ischemia/reperfusion endoplasmic reticulum stress. Acta Cir Bras 2017; 32:533-539. [PMID: 28793037 DOI: 10.1590/s0102-865020170070000004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 06/26/2017] [Indexed: 01/22/2023] Open
Abstract
Purpose: To investigate the protective mechanisms of propofol (Pro) on renal ischemia/reperfusion (I/R) injury by studying its impact on renal I/R endoplasmic reticulum stress. Methods: Eighteen male Sprague-Dawley rats (SD rats) were randomly divided into three groups: the I/R group, the Pro pretreatment group, and the control group, and corresponding treatments were performed. The levels of serum creatinine (Cr) and blood urea nitrogen (BUN) of each group were detected. The expression levels of CCAAT-enhancer-binding protein (C/EBP) homology protein (CHOP) and caspase-12 protein within renal tissue samples were detected by western blot. Results: The periodic acid-Schiff (PAS) staining was performed to observe the morphological changes within the renal tissues, and the terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) assay was performed to detect the presence of renal apoptosis. The Pro pretreatment significantly reduced the serum Cr and BUN levels, as well as the expressions levels of CHOP and caspase-12 protein inside the kidney of I/R rats, improving renal pathological injury and reducing the I/R-induced renal apoptosis. Conclusion: Propofol could downregulate the expression of stress-apoptotic proteins CHOP and caspase-12 in the endoplasmic reticulum, thus reducing renal I/R injury.
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Affiliation(s)
- Mengqin Su
- PhD, Department of Anesthesiology, Henan Provincial Chest Hospital, Zhengzhou, China. Conception and design of the study, analysis and interpretation of data, manuscript writing, critical revision
| | - Sueng Ren
- PhD, Department of Anesthesiology, Henan Provincial Chest Hospital, Zhengzhou, China. Conception and design of the study, analysis and interpretation of data, manuscript writing, critical revision
| | - Wei Zhong
- PhD, Department of Anesthesiology, Henan Provincial Chest Hospital, Zhengzhou, China. Conception and design of the study, analysis and interpretation of data, manuscript writing, critical revision
| | - Xueping Han
- Professor, Department of Anesthesiology, First Affiliated Hospital, Zhengzhou University; Institute of Clinical Medical Research, Henan Universities, Zhengzhou, China. Conception, design and intellectual content of the study, supervised all phases of the study
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28
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Li L, Lin M, Zhang L, Huang S, Hu C, Zheng L, Li L, Zhang C, Yang C, Long Y, Rong R, Zhu T. Cyclic helix B peptide protects HK‑2 cells from oxidative stress by inhibiting ER stress and activating Nrf2 signalling and autophagy. Mol Med Rep 2017; 16:8055-8061. [PMID: 28944924 PMCID: PMC5779891 DOI: 10.3892/mmr.2017.7588] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 03/07/2017] [Indexed: 11/24/2022] Open
Abstract
Renal ischemia-reperfusion injury (IRI) is present in numerous diseases and is observed following certain treatments, including renal transplantation. Preventing tubular epithelial cells (TECs) from undergoing apoptosis is vital for treatment of renal IRI. Cyclic helix B peptide (CHBP) is a novel agent that has a protective effect on renal IRI in vivo. In the present study, the effect and underlying mechanism of CHBP on TECs was investigated. The HK-2 human renal proximal tubular epithelial cell line was treated with 500 µmol/l H2O2 for 4 h prior to determining the effect of CHBP pretreatment for 1 h on cell viability, caspase 3 activity and expression levels, expression levels of oxidative stress markers, endoplasmic reticulum (ER) stress markers, NF-E2-related factor 2 (Nrf2), heme oxygenase-1 (HO-1) and autophagy markers. This was investigated using a Cell Counting kit 8, a terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling assay, western blotting, reverse transcription-quantitative polymerase chain reaction and immunocytochemistry. Results revealed that pretreatment with CHBP enhanced HK-2 cell viability, the glutathione/glutathione disulphide ratio, activation of Nrf2 and mRNA expression levels of HO-1 and the expression levels of beclin-1 and light chain 3 A/B-II/I. Conversely, CHBP pretreatment reduced the expression levels of reactive oxygen species, the activity and protein expression levels of capase-3, the mRNA and protein expression levels of C/EBP homologous protein and binding immunoglobulin protein, and the expression levels of phosphorylated (p)-mechanistic target of rapamycin (mTOR) Ser2448 and p62 during oxidative stress. However, the expression of p-mTOR Ser2481 was enhanced after CHBP pretreatment. CHBP pretreatment reduced the expression levels of reactive oxygen species, the activity and protein expression levels of capase-3, the mRNA and protein expression levels of C/EBP homologous protein and binding immunoglobulin protein, and the expression levels of phosphorylated (p)-mechanistic target of rapamycin (mTOR) Ser2481, p62 and p-mTOR Ser 2448 during oxidative stress. In conclusion, CHBP pretreatment protected HK-2 cells from H2O2-induced injury, inhibited ER stress and pro-apoptotic pathways, and activated the Nrf2 signalling pathway and autophagy. These results provide a potential mechanism of how CHBP protects against renal IRI.
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Affiliation(s)
- Long Li
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Miao Lin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Lexi Zhang
- Department of Urology, Anhui Provincial Hospital, Hefei, Anhui 230001, P.R. China
| | - Shang Huang
- Department of Urology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, P.R. China
| | - Chao Hu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Long Zheng
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Liping Li
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Chao Zhang
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Cheng Yang
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Yaqiu Long
- CAS Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, P.R. China
| | - Ruiming Rong
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
| | - Tongyu Zhu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai 200032, P.R. China
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29
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Qian WJ, Cheng QH. Endoplasmic reticulum stress-mediated apoptosis signal pathway is involved in sepsis-induced liver injury. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:9990-9997. [PMID: 31966888 PMCID: PMC6965985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 08/29/2017] [Indexed: 06/10/2023]
Abstract
Endoplasmic reticulum (ER) stress has been increasingly recognized to have an important role in various liver diseases. Sepsis-induced multi-organ failure remains to have a high mortality rate, and the liver plays a central pathophysiological role. This study aims to explore whether ER stress is involved in liver injury in septic rats. Sepsis was induced via cecal ligation and puncture (CLP). Rats were randomly divided into five groups as follows: sham, CLP 2 h, CLP 6 h, CLP 12 h, and CLP 24 h. They were monitored to record body weight (BW) and liver weight changes for every time point after surgery. The levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were detected via colorimetric activity assays. In addition, the morphological changes of the liver tissue were evaluated by staining the sections with hematoxylin and eosin and observing under light microscopy. The levels of glucose-regulated protein 78 (GRP78), CCAAT/enhancer-binding protein homologous protein (CHOP), and cleaved caspase-12 were detected via Western blot analysis. Apoptosis was detected via terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) method. The results showed that septic rat serums ALT and AST were increased, with the increase being more obvious in the CLP 24 h group. In addition, septic rats appeared to have histopathological abnormalities in the liver. The liver weight and index increased after CLP. No differences were noted in the BW between septic groups. The level of GRP78, CHOP, and cleaved caspase-12 were upregulated after CLP. However, CHOP and caspase-12 were induced later than GRP78. The density of TUNEL-positive apoptotic hepatocytes was significantly increased after 12 h and 24 h CLP. It indicates that the unfolded protein response occurred in the early stage of sepsis-induced liver damage. The ER stress-mediated apoptosis signal pathway is among the mechanisms of septic liver injury and may be a target in clinical prevention and therapy of sepsis-induced liver injury.
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Affiliation(s)
- Wen-Juan Qian
- Medical College of Shihezi UniversityShihezi, Xinjiang, China
| | - Qing-Hong Cheng
- Department of Critical Care Medicine, First Affiliated Hospital of The Medical College of Shihezi UniversityShihezi, Xinjiang, China
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30
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Chung HK, Ryu D, Kim KS, Chang JY, Kim YK, Yi HS, Kang SG, Choi MJ, Lee SE, Jung SB, Ryu MJ, Kim SJ, Kweon GR, Kim H, Hwang JH, Lee CH, Lee SJ, Wall CE, Downes M, Evans RM, Auwerx J, Shong M. Growth differentiation factor 15 is a myomitokine governing systemic energy homeostasis. J Cell Biol 2016; 216:149-165. [PMID: 27986797 PMCID: PMC5223607 DOI: 10.1083/jcb.201607110] [Citation(s) in RCA: 236] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 10/09/2016] [Accepted: 11/30/2016] [Indexed: 01/06/2023] Open
Abstract
Chung et al. show that the myomitokine GDF15 can act to modulate oxidative and lipolytic function in a non–cell-autonomous manner, thereby regulating systemic energy homeostasis in skeletal muscle-specific Crif1-deficient mice. This pathway may be a potential therapeutic target for preventing the onset of obesity and insulin resistance. Reduced mitochondrial electron transport chain activity promotes longevity and improves energy homeostasis via cell-autonomous and –non-autonomous factors in multiple model systems. This mitohormetic effect is thought to involve the mitochondrial unfolded protein response (UPRmt), an adaptive stress-response pathway activated by mitochondrial proteotoxic stress. Using mice with skeletal muscle–specific deficiency of Crif1 (muscle-specific knockout [MKO]), an integral protein of the large mitoribosomal subunit (39S), we identified growth differentiation factor 15 (GDF15) as a UPRmt-associated cell–non-autonomous myomitokine that regulates systemic energy homeostasis. MKO mice were protected against obesity and sensitized to insulin, an effect associated with elevated GDF15 secretion after UPRmt activation. In ob/ob mice, administration of recombinant GDF15 decreased body weight and improved insulin sensitivity, which was attributed to elevated oxidative metabolism and lipid mobilization in the liver, muscle, and adipose tissue. Thus, GDF15 is a potent mitohormetic signal that safeguards against the onset of obesity and insulin resistance.
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Affiliation(s)
- Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Dongryeol Ryu
- Laboratory for Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Joon Young Chang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Hyon-Seung Yi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Seul Gi Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Saet-Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Min Jeong Ryu
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Soung Jung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Hail Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-338, South Korea
| | - Jung Hwan Hwang
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-764, South Korea
| | - Chul-Ho Lee
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-764, South Korea
| | - Se-Jin Lee
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | | | - Michael Downes
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037
| | - Ronald M Evans
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037
| | - Johan Auwerx
- Laboratory for Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea .,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
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31
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Abstract
Acute kidney injury (AKI) is a global public health concern associated with high morbidity, mortality, and healthcare costs. Other than dialysis, no therapeutic interventions reliably improve survival, limit injury, or speed recovery. Despite recognized shortcomings of in vivo animal models, the underlying pathophysiology of AKI and its consequence, chronic kidney disease (CKD), is rich with biological targets. We review recent findings relating to the renal vasculature and cellular stress responses, primarily the intersection of the unfolded protein response, mitochondrial dysfunction, autophagy, and the innate immune response. Maladaptive repair mechanisms that persist following the acute phase promote inflammation and fibrosis in the chronic phase. Here macrophages, growth-arrested tubular epithelial cells, the endothelium, and surrounding pericytes are key players in the progression to chronic disease. Better understanding of these complex interacting pathophysiological mechanisms, their relative importance in humans, and the utility of biomarkers will lead to therapeutic strategies to prevent and treat AKI or impede progression to CKD or end-stage renal disease (ESRD).
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Affiliation(s)
- Anna Zuk
- Renal Division, Brigham and Women's Hospital, Boston, Massachusetts 02115;
| | - Joseph V Bonventre
- Renal Division, Brigham and Women's Hospital, Boston, Massachusetts 02115; .,Department of Medicine, Harvard Medical School, Boston, Massachusetts 02115;
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32
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Zeng CW, Kamei Y, Wang CT, Tsai HJ. Subtypes of hypoxia-responsive cells differentiate into neurons in spinal cord of zebrafish embryos after hypoxic stress. Biol Cell 2016; 108:357-377. [PMID: 27539672 DOI: 10.1111/boc.201600015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 08/11/2016] [Accepted: 08/15/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND INFORMATION Neuron stem/progenitor cells (NSPCs) of zebrafish central nervous system (CNS) are known to thrive during oxygen recovery after hypoxia, but not all cell types have been fully characterised due to their heterogeneities. In addition, an in vivo model system is not available that can help us to identify what type-specific cell populations that are involved in neural regeneration and to track their cell fate after regeneration. To solve these issues, we employed a zebrafish transgenic line, huORFZ, which harbours an inhibitory upstream open reading frame of human chop mRNA fused downstream with GFP reporter and driven by cytomegalovirus promoter. When huORFZ embryos were exposure to hypoxic stress, followed by oxygen recovery, GFP was exclusively expressed in some particular cells of CNS. Unlike GFP-negative cells, all GFP-expressing cells were not apoptotic, indicating that cell populations that are able to survive after hypoxia can be identified through this approach. RESULTS When GFP-expressing cells of spinal cord were studied, we found mostly NSPCs and radial glia cells (RGs), along with a few oligodendrocyte progenitor cells and oligodendrocytes, all termed as hypoxia-responsive recovering cells (HrRCs). After hypoxic stress, these GFP-positive HrRCs did not undergo apoptosis, but GFP-negative neurons did. Prolonged recovery time after hypoxia was correlated with higher proportions of GFP(+)-NSPCs and GFP(+)-RGs, in contrast to lower proportions of proliferating/differentiating GFP(-)-NSPCs and GFP(-)-RGs. Among HrRCs subtypes, only GFP(+)-NSPCs and GFP(+)-RGs proliferated, migrated and differentiated into functional neurons during oxygen recovery. When some HrRCs were ablated in the spinal cord of hypoxia-exposed huORFZ embryos, swimming performance was impaired, suggesting that HrRCs are involved in neuronal regeneration. CONCLUSION We demonstrated type-specific cell populations able to respond sensitively to hypoxic stress in the spinal cord of zebrafish embryos and that these type-specific populations play a role in neural regeneration. SIGNIFICANCE Among heterogeneous cell types that exist in the spinal cord of zebrafish embryos after hypoxia, the particular cells that are resistant to hypoxia and also involved in neuronal regeneration can be clearly identified and dynamically traced using a transgenic model fish.
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Affiliation(s)
- Chih-Wei Zeng
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 10617, Taiwan
| | - Yasuhiro Kamei
- National Institute for Basic Biology, Okazaki, 444-8585, Aichi, Japan
| | - Chih-Tien Wang
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 10617, Taiwan
| | - Huai-Jen Tsai
- Institute of Molecular and Cellular Biology, National Taiwan University, Taipei, 10617, Taiwan.,Institute of Biomedical Science, Mackay Medical College, New Taipei City, 252, Taiwan
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33
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Kim Y, Lee H, Manson SR, Lindahl M, Evans B, Miner JH, Urano F, Chen YM. Mesencephalic Astrocyte-Derived Neurotrophic Factor as a Urine Biomarker for Endoplasmic Reticulum Stress-Related Kidney Diseases. J Am Soc Nephrol 2016; 27:2974-2982. [PMID: 26940092 PMCID: PMC5042655 DOI: 10.1681/asn.2014100986] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Accepted: 01/15/2016] [Indexed: 12/14/2022] Open
Abstract
Endoplasmic reticulum (ER) stress and disrupted proteostasis contribute to the pathogenesis of a variety of glomerular and tubular diseases. Thus, it is imperative to develop noninvasive biomarkers for detecting ER stress in podocytes or tubular cells in the incipient stage of disease, when a kidney biopsy is not yet clinically indicated. Mesencephalic astrocyte-derived neurotrophic factor (MANF) localizes to the ER lumen and is secreted in response to ER stress in several cell types. Here, using mouse models of human nephrotic syndrome caused by mutant laminin β2 protein-induced podocyte ER stress and AKI triggered by tunicamycin- or ischemia-reperfusion-induced tubular ER stress, we examined MANF as a potential urine biomarker for detecting ER stress in podocytes or renal tubular cells. ER stress upregulated MANF expression in podocytes and tubular cells. Notably, urinary MANF excretion concurrent with podocyte or tubular cell ER stress preceded clinical or histologic manifestations of the corresponding disease. Thus, MANF can potentially serve as a urine diagnostic or prognostic biomarker in ER stress-related kidney diseases to help stratify disease risk, predict disease progression, monitor treatment response, and identify subgroups of patients who can be treated with ER stress modulators in a highly targeted manner.
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Affiliation(s)
- Yeawon Kim
- Division of Nephrology, Department of Internal Medicine
| | - Heedoo Lee
- Division of Nephrology, Department of Internal Medicine
| | | | - Maria Lindahl
- Institute of Biotechnology, University of Helsinki, Helsinki, Finland; and
| | - Bradley Evans
- Proteomics and Mass Spectrometry Facility, Donald Danforth Plant Science Center, St. Louis, Missouri
| | - Jeffrey H Miner
- Division of Nephrology, Department of Internal Medicine, Departments of Cell Biology and Physiology and
| | - Fumihiko Urano
- Division of Endocrinology, Metabolism and Lipid Research, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri; Pathology and Immunology, and
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34
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González-Guerrero C, Cannata-Ortiz P, Guerri C, Egido J, Ortiz A, Ramos AM. TLR4-mediated inflammation is a key pathogenic event leading to kidney damage and fibrosis in cyclosporine nephrotoxicity. Arch Toxicol 2016; 91:1925-1939. [PMID: 27585667 DOI: 10.1007/s00204-016-1830-8] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 08/24/2016] [Indexed: 01/12/2023]
Abstract
Cyclosporine A (CsA) successfully prevents allograft rejection, but nephrotoxicity is still a dose-limiting adverse effect. TLR4 activation promotes kidney damage but whether this innate immunity receptor mediates CsA nephrotoxicity is unknown. The in vivo role of TLR4 during CsA nephrotoxicity was studied in mice co-treated with CsA and the TLR4 inhibitor TAK242 and also in TLR4-/- mice. CsA-induced renal TLR4 expression in wild-type mice. Pharmacological or genetic targeting of TLR4 reduced the activation of proinflammatory signaling, including JNK/c-jun, JAK2/STAT3, IRE1α and NF-κB and the expression of Fn14. Expression of proinflammatory factors and cytokines was also decreased, and kidney monocyte and lymphocyte influx was prevented. TLR4 inhibition also reduced tubular damage and drastically prevented the development of kidney fibrosis. In vivo and in vitro CsA promoted secretion of the TLR ligand HMGB1 by tubular cells upstream of TLR4 activation, and prevention of HMGB1 secretion significantly reduced CsA-induced synthesis of MCP-1, suggesting that HMGB1 may be one of the mediators of CsA-induced TLR4 activation. These results suggest that TLR4 is a potential pharmacological target in CsA nephrotoxicity.
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Affiliation(s)
- Cristian González-Guerrero
- Laboratory of Nephrology and Vascular Pathology, IIS-Fundación Jiménez Díaz, School of Medicine, Madrid, Spain.,REDINREN, Madrid, Spain
| | - Pablo Cannata-Ortiz
- REDINREN, Madrid, Spain.,Pathology, IIS-Fundación Jiménez Díaz, School of Medicine, UAM, Madrid, Spain
| | - Consuelo Guerri
- Department of Cellular Pathology, Centro de Investigación Príncipe Felipe, Valencia, Spain
| | - Jesús Egido
- Laboratory of Nephrology and Vascular Pathology, IIS-Fundación Jiménez Díaz, School of Medicine, Madrid, Spain.,Fundación Renal Íñigo Álvarez de Toledo (FRIAT), Madrid, Spain
| | - Alberto Ortiz
- Laboratory of Nephrology and Vascular Pathology, IIS-Fundación Jiménez Díaz, School of Medicine, Madrid, Spain.,REDINREN, Madrid, Spain.,Fundación Renal Íñigo Álvarez de Toledo (FRIAT), Madrid, Spain
| | - Adrián M Ramos
- Laboratory of Nephrology and Vascular Pathology, IIS-Fundación Jiménez Díaz, School of Medicine, Madrid, Spain. .,REDINREN, Madrid, Spain. .,Laboratorio de Patología Renal y Vascular (Investigación, 4° planta), Instituto de Investigación Sanitaria-Fundación Jiménez Díaz, Av. Reyes Católicos N°2, CP28040, Madrid, Spain.
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35
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Abstract
Sepsis is an enormous public health issue and the leading cause of death in critically ill patients in intensive care units. Overwhelming inflammation, characterized by cytokine storm, oxidative threats, and neutrophil sequestration, is an underlying component of sepsis-associated organ failure. Despite recent advances in sepsis research, there is still no effective treatment available beyond the standard of care and supportive therapy. To reduce sepsis-related mortality, a better understanding of the biological mechanism associated with sepsis is essential. Endoplasmic reticulum (ER), a subcellular organelle, is responsible for the facilitation of protein folding and assembly and involved in several other physiological activities. Under stress and inflammatory conditions, ER loses homeostasis in its function, which is termed ER stress. During ER stress, unfolded protein response (UPR) is activated to restore ER function to its normal balance. However, once stress is beyond the compensatory capacity of UPR or protracted, apoptosis would be initiated by triggering cell injuries, even cell death. As such, ER stress and UPR are reported to be implicated in several pathological and inflammatory conditions. Although the detrimental role of ER stress during infections has been demonstrated, there is growing evidence that ER stress participates in the pathogenesis of sepsis. In this review, we summarize current research in the context of ER stress and UPR signaling associated with sepsis and its related clinical conditions, such as trauma-hemorrhage and ischemia/reperfusion injury. We also discuss the potential implications of ER stress as a novel therapeutic target and prognostic marker in patients with sepsis.
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36
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Hyperglycemia attenuates remifentanil postconditioning-induced cardioprotection against hypoxia/reoxygenation injury in H9c2 cardiomyoblasts. J Surg Res 2016; 203:483-90. [DOI: 10.1016/j.jss.2016.03.052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 03/11/2016] [Accepted: 03/22/2016] [Indexed: 01/08/2023]
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37
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Long C, Yang J, Yang H, Li X, Wang G. Attenuation of renal ischemia/reperfusion injury by oleanolic acid preconditioning via its antioxidant, anti‑inflammatory, and anti‑apoptotic activities. Mol Med Rep 2016; 13:4697-704. [PMID: 27082705 DOI: 10.3892/mmr.2016.5128] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 01/20/2016] [Indexed: 12/13/2022] Open
Abstract
Ischemia/reperfusion (I/R)‑associated acute kidney injury is a major clinical problem in both native and transplanted kidneys. Renal I/R, and subsequent renal injury, may be attributed to oxidative stress, inflammation, and apoptosis. Oleanolic acid (OA) is a natural product, which possesses antioxidant, anti‑inflammatory, and anti‑apoptotic activities. The present study aimed to examine the effects of OA preconditioning on renal I/R and the possible underlying mechanisms. In a renal I/R model, rats were administered OA (12.5, 25 and 50 mg/kg) for 15 consecutive days prior to bilateral renal I/R induction. Serum samples and kidneys were then collected and stored for subsequent determination. The results of the present study demonstrated that OA significantly and dose‑dependently attenuated I/R‑induced renal damage. OA prevented renal I/R injury, as evidenced by decreased levels of blood urea nitrogen, creatinine, kidney injury molecule‑1 and lactate dehydrogenase. In addition, OA defended against oxidative stress, as reflected by decreased levels of methane dicarboxylic aldehyde, increased activities of superoxide dismutase, catalase and glutathione peroxidase, and increased glutathione (GSH) levels. Levels of proinflammatory cytokines, interferon‑γ, interleukin (IL)‑6) and myeloperoxidase, were also reduced by OA, whereas the anti‑inflammatory cytokine IL‑10 was increased. Furthermore, OA prevented I/R‑induced apoptotic cell death, and prevented decreases in the mRNA expression levels of nuclear factor erythroid 2‑related factor 2 (Nrf2) and γ‑glutamylcysteine ligase (GCLc). Conversely, buthionine sulphoximine attenuated the protective effects of OA on renal I/R injury. These results indicated that OA preconditioning may prevent I/R‑induced renal damage via antioxidant, anti‑inflammatory, and anti‑apoptotic activities. Stabilization of Nrf2/GCLc signaling and subsequent maintenance of the GSH pool is critical for the protective effects of OA against renal I/R injury. The present study reported a novel therapeutic strategy for the treatment of renal I/R injury.
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Affiliation(s)
- Chengmei Long
- Graduate Faculty, Medical College of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Jinran Yang
- Department of Organ Transplantation, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Hua Yang
- Department of Organ Transplantation, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Xinchang Li
- Department of Organ Transplantation, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi 330006, P.R. China
| | - Gongxian Wang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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38
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Mochimaru Y, Azuma M, Oshima N, Ichijo Y, Satou K, Matsuda K, Asaoka Y, Nishina H, Nakakura T, Mogi C, Sato K, Okajima F, Tomura H. Extracellular acidification activates ovarian cancer G-protein-coupled receptor 1 and GPR4 homologs of zebra fish. Biochem Biophys Res Commun 2015; 457:493-9. [DOI: 10.1016/j.bbrc.2014.12.105] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Accepted: 12/24/2014] [Indexed: 02/02/2023]
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