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Anegawa T, Sasaki KI, Ishizaki Y, Negoto S, Oryoji A, Nakamura E, Otsuka H, Hiromatsu S, Fukumoto Y, Tayama E. Effects of Pemafibrate on Reducing Oxidative Stress and Augmenting Angiogenesis in Ischemic Limb Tissue. Kurume Med J 2024; 69:167-174. [PMID: 38233183 DOI: 10.2739/kurumemedj.ms6934006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
OBJECTIVE Oxidative damage is observed in the ischemic limbs of patients with arteriosclerosis obliterans. We investigated whether pemafibrate, a selective peroxisome proliferator-activated receptor alpha modulator, reduced oxidative stress in ischemic limbs and consequently rescued limb damage in model mice. MATERIALS AND METHODS We surgically induced hind-limb ischemia in mice and orally administered pemafibrate solution (P-05 group, 0.5 mg/kg/day; P-10 group, 1.0 mg/kg/day) or control solution (control group). Seven days after the surgery, differences in reactive oxygen species (ROS) contents, antioxidative enzyme and transcription factor expression, blood flow, and capillary density in ischemic limbs were assessed. RESULTS Tissue ROS levels were lower in the P-05 and P-10 groups compared with those in the control group. Although the tissue expression levels of nuclear factor-erythroid 2-related factor 2 increased in the P-10 group compared with that in the control group, no corresponding changes were observed in the tissue expression of four antioxidative enzymes. The limb salvage rates and capillary densities in ischemic limbs were higher in the P-05 and P-10 groups than that in the control group. CONCLUSION Pemafibrate treatment reduced oxidative stress and augmented angiogenesis in ischemic limbs, contributing to prevention of limb damage in mice.
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Affiliation(s)
- Tomoyuki Anegawa
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
| | - Ken-Ichiro Sasaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
| | - Yuta Ishizaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
| | - Shinya Negoto
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
| | - Atsunobu Oryoji
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
| | - Eiji Nakamura
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
| | - Hiroyuki Otsuka
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
| | - Shinichi Hiromatsu
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
| | - Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
| | - Eiki Tayama
- Division of Cardiovascular Surgery, Department of Surgery, Kurume University School of Medicine
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Younis SS, Ghafil FAA, Majeed S, Hadi NR. The effect of JQ1 systemic administration on oxidative stress and apoptotic markers in renal ischemic reperfusion injury in a rat model. J Med Life 2023; 16:682-688. [PMID: 37520478 PMCID: PMC10375347 DOI: 10.25122/jml-2022-0287] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 01/04/2023] [Indexed: 08/01/2023] Open
Abstract
This study aimed to investigate the effects of JQ1 in a renal ischemia-reperfusion (IR) rat model. Twenty-four adult male Wistar Albino rats were randomly divided into four equal groups. The sham group underwent laparotomy without ischemia-reperfusion induction. The control group experienced bilateral renal ischemia for 30 minutes, followed by a 2-hour reperfusion period. The vehicle group (IR group + DMSO) and JQ1 group (same as in control IR + 25 mg/kg JQ1). Kidney and blood samples were collected 2 hours after reperfusion. Blood samples were used to analyze serum creatinine and blood urea nitrogen levels. Renal tissue was assessed for TNF-alpha, caspase-3, FOXO4, PI3K/AKT signaling pathway, and histological analysis. The control group exhibited significantly higher serum creatinine, blood urea nitrogen, caspase-3, TNF-alpha, and FOXO4 levels in renal tissue compared to the sham group. Additionally, the PI3K/AKT signaling pathway was significantly decreased in the control group. Histopathological examination revealed severe kidney damage in the control group compared to the sham group. In rats treated with JQ1, serum creatinine, BUN, caspase-3, TNF-alpha, and FOXO4 levels in renal tissue significantly improved. The PI3K/AKT signaling pathway was substantially increased (p-value 0.01) compared to the Vehicle and Control groups. The tubular severity score was also significantly reduced in the JQ1-treated groups compared to the Control and Vehicle groups. In conclusion, JQ1 significantly ameliorated renal ischemia-reperfusion injury in rats by suppressing apoptosis and inflammatory pathways.
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Affiliation(s)
- Saba Sahib Younis
- Al-Sadr Medical City, Al-Najaf Health Directorate, Al Najaf Al-Ashraf, Iraq
| | | | - Sahar Majeed
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa, Najaf, Iraq
| | - Najah Rayish Hadi
- Al-Sadr Medical City, Al-Najaf Health Directorate, Al Najaf Al-Ashraf, Iraq
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Ishizaki Y, Sasaki KI, Yoshikawa T, Nakayoshi T, Sasaki M, Ohtsuka M, Hatada-Katakabe S, Takata Y, Fukumoto Y. RTA-dh404 decreased oxidative stress in mice ischemic limbs and augmented efficacy of therapeutic angiogenesis by intramuscular injection of adipose-derived regenerative cells in the limbs. Eur J Pharmacol 2022; 938:175422. [PMID: 36442622 DOI: 10.1016/j.ejphar.2022.175422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 11/07/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
Although an intramuscular injection of angiogenic cells to ischemic limbs with peripheral artery disease is a therapeutic option to rescue patients by augmenting neovascularization in the limbs, oxidative stress in the limbs may accelerate apoptosis of the injected cells and thereby reduce the therapeutic effect. In this study involving mice with ischemic lower limbs, whether daily oral administration of RTA-dh404, which is an activator of nuclear factor erythroid 2-related factor 2 (Nrf2) with antioxidant activity, could reduce oxidative stress in the limbs and suppress apoptosis of adipose-derived regenerative cells (ADRCs) injected in the limbs, eventually augmenting neovascularization in the limbs, was evaluated. The tissue expression of Nrf2 and concentrations of total antioxidant capacity and superoxide dismutase in the mice ischemic limbs were higher in the RTA-dh404-treated mice than in the control treated mice, and oxidative stress in the limbs of the RTA-dh404 treated mice was decreased. The day after an intramuscular injection of human ADRCs into ischemic lower limbs of immunodeficient mice, the number of apoptotic ADRCs in the ischemic limbs was decreased by approximately 25% in the RTA-dh404-treated mice compared to the control mice. Fourteen days after cell injection, neovascularization and the salvage ratio were increased by approximately 10% and 63%, respectively, in the ischemic limbs in the RTA-dh404-treated mice compared to the control mice. Pretreatment of ischemic limbs by daily oral administration of RTA-dh404 may augment the effect of therapeutic angiogenesis using an intramuscular injection of ADRCs into the ischemic limbs.
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Affiliation(s)
- Yuta Ishizaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Ken-Ichiro Sasaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan.
| | - Takahiro Yoshikawa
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Takaharu Nakayoshi
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Motoki Sasaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Masanori Ohtsuka
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Sachiko Hatada-Katakabe
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Yuki Takata
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
| | - Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine, Kurume, Japan
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Yang X, Zhang F, Liu X, Meng J, Du S, Shao J, Liu J, Fang M. FOXO4 mediates resistance to oxidative stress in lens epithelial cells by modulating the TRIM25/Nrf2 signaling. Exp Cell Res 2022; 420:113340. [PMID: 36075446 DOI: 10.1016/j.yexcr.2022.113340] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 08/06/2022] [Accepted: 08/31/2022] [Indexed: 11/19/2022]
Abstract
Oxidative stress damage to the lens is a key factor in most cataracts. Forkhead box O 4 (FOXO4), a member of the forkhead box O family, plays a pivotal role in oxidative stress. FOXO4 is upregulated in lens of age-related cataract patients, but its role in cataract has not been elucidated. Herein, we investigated the role and mechanism of FOXO4 during oxidative stress damage in lens epithelial cells. H2O2 treatment enhanced FOXO4 expression in HLEpiC cells. Short hairpin RNAs mediated FOXO4 silence aggravated H2O2-induced cell apoptosis. In addition, upon H2O2 exposure, silencing of FOXO4 reduced SOD and CAT activities, as well as increased intracellular MDA and ROS levels. FOXO4 silencing also inhibited Nrf2 nuclear translocation, followed by reducing the expressions of Nrf2-governed antioxidant genes HO-1 and NOQ-1. Exogenous overexpression of FOXO4 was also involved in this study and exhibited opposite effects of FOXO4-silencing. Mechanistically, FOXO4 directly bound the promoter of TRIM25 and regulated its transcription, thereby activating the Nrf2 signaling. Taken together, in the condition of oxidative stress, the expression of FOXO4 showed a compensatory upregulation and it exhibited an anti-oxidative effect by modulating the transcription of TRIM25, thus activating the Nrf2 signaling. The FOXO4/TRIM25/Nrf2 axis may be associated with the pathological mechanisms of cataract.
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Affiliation(s)
- Xin Yang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Fengyan Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Xuhui Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Jia Meng
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Shanshan Du
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Jingzhi Shao
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Jingjing Liu
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China
| | - Mengyuan Fang
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, PR China.
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Tejchman K, Kotfis K, Sieńko J. Biomarkers and Mechanisms of Oxidative Stress-Last 20 Years of Research with an Emphasis on Kidney Damage and Renal Transplantation. Int J Mol Sci 2021; 22:ijms22158010. [PMID: 34360776 PMCID: PMC8347360 DOI: 10.3390/ijms22158010] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 02/06/2023] Open
Abstract
Oxidative stress is an imbalance between pro- and antioxidants that adversely influences the organism in various mechanisms and on many levels. Oxidative damage occurring concomitantly in many cellular structures may cause a deterioration of function, including apoptosis and necrosis. The damage leaves a molecular “footprint”, which can be detected by specific methodology, using certain oxidative stress biomarkers. There is an intimate relationship between oxidative stress, inflammation, and functional impairment, resulting in various diseases affecting the entire human body. In the current narrative review, we strengthen the connection between oxidative stress mechanisms and their active compounds, emphasizing kidney damage and renal transplantation. An analysis of reactive oxygen species (ROS), antioxidants, products of peroxidation, and finally signaling pathways gives a lot of promising data that potentially will modify cell responses on many levels, including gene expression. Oxidative damage, stress, and ROS are still intensively exploited research subjects. We discuss compounds mentioned earlier as biomarkers of oxidative stress and present their role documented during the last 20 years of research. The following keywords and MeSH terms were used in the search: oxidative stress, kidney, transplantation, ischemia-reperfusion injury, IRI, biomarkers, peroxidation, and treatment.
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Affiliation(s)
- Karol Tejchman
- Department of General and Transplantation Surgery, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.T.); (J.S.)
| | - Katarzyna Kotfis
- Department of Anesthesiology, Intensive Therapy and Acute Intoxications, Pomeranian Medical University, 70-111 Szczecin, Poland
- Correspondence: ; Tel.: +48914661144
| | - Jerzy Sieńko
- Department of General and Transplantation Surgery, Pomeranian Medical University, 70-111 Szczecin, Poland; (K.T.); (J.S.)
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He B, Yang F, Ning Y, Li Y. Sevoflurane alleviates hepatic ischaemia/reperfusion injury by up-regulating miR-96 and down-regulating FOXO4. J Cell Mol Med 2021; 25:5899-5911. [PMID: 34061461 PMCID: PMC8256341 DOI: 10.1111/jcmm.16063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 09/27/2020] [Accepted: 10/05/2020] [Indexed: 01/06/2023] Open
Abstract
Hepatic ischaemia/reperfusion (I/R) injury represents an event characterized by anoxic cell death and an inflammatory response, that can limit the treatment efficacy of liver surgery. Ischaemic preconditioning agents such as sevoflurane (Sevo) have been highlighted to play protective roles in hepatic I/R injury. The current study aimed to investigate the molecular mechanism underlying the effects associated with Sevo in hepatic I/R injury. Initially, mouse hepatic I/R injury models were established via occlusion of the hepatic portal vein and subsequent reperfusion. The expression of forkhead box protein O4 (FOXO4) was detected using reverse transcription quantitative polymerase chain reaction and Western blot analysis from clinical liver tissue samples obtained from patients who had previously undergone liver transplantation, mouse I/R models and oxygen-deprived hepatocytes. The morphology of the liver tissues was analysed using haematoxylin-eosin (HE) staining, with apoptosis detected via TUNEL staining. Immunohistochemistry methods were employed to identify the FOXO4-positive cells. Mice with knocked out FOXO4 (FOXO4-KO mice) were subjected to I/R. In this study, we found FOXO4 was highly expressed following hepatic I/R injury. After treatment with Sevo, I/R modelled mice exhibited an alleviated degree of liver injury, fewer apoptotic cells and FOXO4-positive cells. FOXO4 was a target gene of miR-96. Knockdown of FOXO4 could alleviate hepatic I/R injury and decrease cell apoptosis. Taken together, the key observations of our study suggest that Sevo alleviates hepatic I/R injury by means of promoting the expression of miR-96 while inhibiting FOXO4 expression. This study highlights the molecular mechanism mediated by Sevo in hepatic I/R injury.
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Affiliation(s)
- Binghua He
- Jinan UniversityGuangzhouChina
- Department of Anesthesiologythe Central Hospital of ShaoyangShaoyangChina
| | - Fan Yang
- Department of Anesthesiologythe Central Hospital of ShaoyangShaoyangChina
| | - Yingxia Ning
- Department of Gynecology and ObstetricsThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Yalan Li
- Department of Anesthesiologythe First Affiliated Hospital of Jinan UniversityGuangzhouChina
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Wang S, Jun J, Cong L, Du L, Wang C. miR-328-3p, a Predictor of Stroke, Aggravates the Cerebral Ischemia-Reperfusion Injury. Int J Gen Med 2021; 14:2367-2376. [PMID: 34135620 PMCID: PMC8197582 DOI: 10.2147/ijgm.s307392] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 05/14/2021] [Indexed: 12/22/2022] Open
Abstract
Background In the present study, we aimed to identify microRNAs (miRNAs) that affected the prognosis of stroke and assess their biological effects. Materials and Methods A high-throughput sequencing (HTS) analysis was performed to screen distinctive miRNAs in serum exosomes of stroke patients, and these miRNAs were subsequently validated using individual quantitative real-time polymerase chain reaction (qRT-PCR) in a cohort consisting of 39 stroke patients and 20 normal controls. Briefly, miR-328-3p agomir or agomir NC was injected into rats before ischemia and reperfusion (I/R) injury. Zea-Longa score, neurological severity score (mNSS), triphenyltetrazolium chloride (TTC) staining, terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay, transmission electron microscopy, and hematoxylin and eosin (H&E) staining were used to examine the brain injury. Immunohistochemistry was utilized to determine the expressions of TNF-α and IL-6. Results The expression of serum exosomal miR-328-3p was significantly reduced in patients with an infarct volume ≥10 cm3 (P=0.01). Serum exosomal miR-328-3p was associated with the short-term prognosis (P=0.02), and the level of miR-328-3p was an independent relative factor for short-term prognosis (OR 5.276, P=0.02). The sensitivity of miR-328-3p level higher than 1.24 to predict the severity of the patient’s 1-week prognosis was 70%, and the specificity was 83% (AUC=0.74, P=0.02). The mNSS was higher in the miR-328-3p agomir group compared with the agomir NC group (P=0.03). Neutrophil infiltration was more serious in the miR-328-3p agomir group. Conclusion Our study indicated that miR-328-3p played a critical predictive role in the short-term prognosis of stroke, and up-regulation of miR-328-3p aggravated cerebral I/R injury.
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Affiliation(s)
- Shun Wang
- Department of Clinical Laboratory, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, People's Republic of China
| | - Jiang Jun
- Department of Neurosurgery, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, People's Republic of China
| | - Liyuan Cong
- Department of Clinical Laboratory, Community Health Service Center, Qingdao, 266000, Shandong, People's Republic of China
| | - Lutao Du
- Department of Clinical Laboratory, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, People's Republic of China
| | - Chuanxin Wang
- Department of Clinical Laboratory, the Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, People's Republic of China
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Liu W, Li Y, Luo B. Current perspective on the regulation of FOXO4 and its role in disease progression. Cell Mol Life Sci 2020; 77:651-663. [PMID: 31529218 PMCID: PMC11104957 DOI: 10.1007/s00018-019-03297-w] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/21/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022]
Abstract
Forkhead box O4 (FOXO4) is a member of the FOXO family that regulates a number of genes involved in metabolism, cell cycle, apoptosis, and cellular homeostasis via transcriptional activity. It also mediates cell responses to oxidative stress and treatment with antitumor agents. The expression of FOXO4 is repressed by microRNAs in multiple cancer cells, while FOXO4 function is regulated by post-translational modifications and interaction with other proteins. The deregulation of FOXO4 is closely linked to the progression of several types of cancer, senescence, and other diseases. In this review, we present recent findings on the regulation of FOXO4 in physiological and pathological conditions and provide an overview of the complex role of FOXO4 in disease development and response to therapy.
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Affiliation(s)
- Wen Liu
- Department of Pathogenic Biology, Faculty of Medicine, Qingdao University, Qingdao, China
| | - Yong Li
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders and State Key Disciplines: Physiology, Faculty of Medicine, Qingdao University, Qingdao, China
| | - Bing Luo
- Department of Pathogenic Biology, Faculty of Medicine, Qingdao University, Qingdao, China.
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Inhibition of Brd4 alleviates renal ischemia/reperfusion injury-induced apoptosis and endoplasmic reticulum stress by blocking FoxO4-mediated oxidative stress. Redox Biol 2019; 24:101195. [PMID: 31004990 PMCID: PMC6475721 DOI: 10.1016/j.redox.2019.101195] [Citation(s) in RCA: 137] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/03/2019] [Accepted: 04/08/2019] [Indexed: 01/09/2023] Open
Abstract
Ischemia/reperfusion injury (I/R) is one of the leading causes of acute kidney injury (AKI) that typically occurs in renal surgeries. However, renal I/R still currently lacks effective therapeutic targets. In this study, we proved that inhibition of Brd4 with its selective inhibitor, JQ1, could exert a protective role in renal I/R injury in mice. Inhibiting Brd4 with either JQ1 or genetic knockdown resulted in reduction of endoplasmic reticulum stress (ERS)-associated protein and proapoptotic protein expression both in I/R-induced injury and hypoxia/reoxygenation (H/R) stimulation in HK-2 cells. H/R-induced apoptosis and ERS depended on oxidative stress in vitro. Moreover, FoxO4, which is involved in the generation of hydrogen peroxide, was up-regulated during H/R stimulation-mediated apoptosis and ERS, and this upregulation could be abolished by Brd4 inhibition. Consistently, FoxO4-mediated ROS generation was attenuated upon inhibition of Brd4 with JQ1 or siRNA against Brd4. Further, the transcriptional activity of FoxO4 was suppressed by PI3K and AKT phosphorylation, which are upstream signals of FoxO4 expression, and were enhanced by Brd4 both in vivo and in vitro. In conclusion, our results proved that Brd4 inhibition blocked renal apoptotic and ERS protein expression by preventing FoxO4-dependent ROS generation through the PI3K/AKT pathway, indicating that Brd4 could be a potential therapeutic target for renal I/R injury. Brd4 was up-regulated in renal I/R injury. Brd4 inhibitor JQ1 alleviated renal I/R injury. Brd4 inhibition blocked H/R-induced oxidative stress, apoptosis and ERS through FoxO4. Brd4 regulated FoxO4 through the PI3K/AKT pathway.
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Yu L, Zhang W, Huang C, Liang Q, Bao H, Gong Z, Xu M, Wang Z, Wen M, Cheng X. FoxO4 promotes myocardial ischemia-reperfusion injury: the role of oxidative stress-induced apoptosis. Am J Transl Res 2018; 10:2890-2900. [PMID: 30323875 PMCID: PMC6176234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 08/18/2018] [Indexed: 06/08/2023]
Abstract
Myocardial cell apoptosis is the main pathophysiological process underlying ischemia-reperfusion (I/R) injury. FoxO4, which was initially identified as a tumor suppressor that limits cell proliferation and induces apoptosis, plays diverse roles in cardiovascular diseases. However, its contribution to myocardial I/R injury remains unclear. The present study was undertaken to explore the role of FoxO4 in apoptosis during myocardial I/R injury and its underlying mechanisms in vivo. Rats were subjected to ligation/restoration of the left anterior descending branch of the coronary artery and 30 min of ischemia, followed by 4 h of reperfusion. Then, triphenyltetrazolium chloride (TTC) staining was performed to evaluate the infarct size. Transthoracic echocardiography was performed to evaluate cardiac function. Terminal deoxynucleotide transferase-mediated dUTP nick end-labeling (TUNEL) staining was performed to assess cell death in the myocardium. Real-time PCR was performed to measure FoxO4 mRNA expression. Western blots were performed to assess expression levels of the FoxO4 and cleaved caspase 3 proteins. Immunofluorescence staining was performed to measure cleaved caspase 3 expression levels. The hydroxylamine and TBA methods were performed to evaluate malondialdehyde (MDA) levels and superoxide dismutase (SOD) activity, respectively. Dihydroethidium (DHE) staining was performed to measure reactive oxygen species (ROS) generation. We successfully established a rat model of myocardial I/R injury and observed an increase in FoxO4 expression in the myocardium. FoxO4 knockdown significantly protected rats from myocardial I/R injury, as indicated by a marked decrease in infarct sizes and improvements in cardiac function. Mechanistically, I/R induced excessive oxidative stress in rat hearts, most likely as a result of increased FoxO4 levels, and these effects contributed to inducing apoptosis. In conclusion, the FoxO4/ROS pathway represents a potentially novel mechanism underlying apoptosis during myocardial I/R injury. Therapeutic strategies targeting FoxO4 might represent new treatments for myocardial I/R injury.
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Affiliation(s)
- Lingling Yu
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Weifang Zhang
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
- Postdoctoral Research Center of Clinical Medicine, Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Chahua Huang
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Qian Liang
- Key Laboratory of Molecular Biology in Jiangxi Province, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Huihui Bao
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Zhijian Gong
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Minxuan Xu
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Zhenzhen Wang
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Minhua Wen
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
| | - Xiaoshu Cheng
- Department of Cardiology/Pharmacy, The Second Affiliated Hospital of Nanchang UniversityNo. 1 Minde Road, Nanchang 330006, Jiangxi, P. R. China
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Sasaki KI, Fukumoto Y. Pretreatment of Endothelial Progenitor Cells for Effective Cell Therapy. Circ J 2018; 82:2248-2249. [PMID: 30033949 DOI: 10.1253/circj.cj-18-0768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ken-Ichiro Sasaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
| | - Yoshihiro Fukumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kurume University School of Medicine
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WANG WEI, ZHOU PANGHU, HU WEI. Overexpression of FOXO4 induces apoptosis of clear-cell renal carcinoma cells through downregulation of Bim. Mol Med Rep 2016; 13:2229-34. [DOI: 10.3892/mmr.2016.4789] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 10/22/2015] [Indexed: 11/06/2022] Open
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Correction: FOXO4-Knockdown Suppresses Oxidative Stress-Induced Apoptosis of Early Pro-Angiogenic Cells and Augments Their Neovascularization Capacities in Ischemic Limbs. PLoS One 2015; 10:e0127245. [PMID: 25915042 PMCID: PMC4411169 DOI: 10.1371/journal.pone.0127245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Özdemir BC, Hensel J, Secondini C, Wetterwald A, Schwaninger R, Fleischmann A, Raffelsberger W, Poch O, Delorenzi M, Temanni R, Mills IG, van der Pluijm G, Thalmann GN, Cecchini MG. The molecular signature of the stroma response in prostate cancer-induced osteoblastic bone metastasis highlights expansion of hematopoietic and prostate epithelial stem cell niches. PLoS One 2014; 9:e114530. [PMID: 25485970 PMCID: PMC4259356 DOI: 10.1371/journal.pone.0114530] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 11/10/2014] [Indexed: 01/18/2023] Open
Abstract
The reciprocal interaction between cancer cells and the tissue-specific stroma is critical for primary and metastatic tumor growth progression. Prostate cancer cells colonize preferentially bone (osteotropism), where they alter the physiological balance between osteoblast-mediated bone formation and osteoclast-mediated bone resorption, and elicit prevalently an osteoblastic response (osteoinduction). The molecular cues provided by osteoblasts for the survival and growth of bone metastatic prostate cancer cells are largely unknown. We exploited the sufficient divergence between human and mouse RNA sequences together with redefinition of highly species-specific gene arrays by computer-aided and experimental exclusion of cross-hybridizing oligonucleotide probes. This strategy allowed the dissection of the stroma (mouse) from the cancer cell (human) transcriptome in bone metastasis xenograft models of human osteoinductive prostate cancer cells (VCaP and C4-2B). As a result, we generated the osteoblastic bone metastasis-associated stroma transcriptome (OB-BMST). Subtraction of genes shared by inflammation, wound healing and desmoplastic responses, and by the tissue type-independent stroma responses to a variety of non-osteotropic and osteotropic primary cancers generated a curated gene signature ("Core" OB-BMST) putatively representing the bone marrow/bone-specific stroma response to prostate cancer-induced, osteoblastic bone metastasis. The expression pattern of three representative Core OB-BMST genes (PTN, EPHA3 and FSCN1) seems to confirm the bone specificity of this response. A robust induction of genes involved in osteogenesis and angiogenesis dominates both the OB-BMST and Core OB-BMST. This translates in an amplification of hematopoietic and, remarkably, prostate epithelial stem cell niche components that may function as a self-reinforcing bone metastatic niche providing a growth support specific for osteoinductive prostate cancer cells. The induction of this combinatorial stem cell niche is a novel mechanism that may also explain cancer cell osteotropism and local interference with hematopoiesis (myelophthisis). Accordingly, these stem cell niche components may represent innovative therapeutic targets and/or serum biomarkers in osteoblastic bone metastasis.
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Affiliation(s)
- Berna C. Özdemir
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Janine Hensel
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Chiara Secondini
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Antoinette Wetterwald
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Ruth Schwaninger
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | | | | | - Olivier Poch
- ICube UMR7357, University of Strasbourg, Strasbourg, France
| | - Mauro Delorenzi
- Ludwig Center for Cancer Research, Department of Oncology, University of Lausanne and Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - Ramzi Temanni
- Biomedical Informatics Division, Sidra Medical and Research Center, Doha, Qatar
| | - Ian G. Mills
- Prostate Cancer Research Group, Norway Centre for Molecular Medicine (NCMM), University of Oslo, Oslo, Norway
| | - Gabri van der Pluijm
- Department of Urology, Leiden University Medical Centre (LUMC), Leiden, The Netherlands
| | - George N. Thalmann
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
| | - Marco G. Cecchini
- Urology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland
- * E-mail:
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