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Jiang S, Han S, Wang DW. The involvement of soluble epoxide hydrolase in the development of cardiovascular diseases through epoxyeicosatrienoic acids. Front Pharmacol 2024; 15:1358256. [PMID: 38628644 PMCID: PMC11019020 DOI: 10.3389/fphar.2024.1358256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 03/12/2024] [Indexed: 04/19/2024] Open
Abstract
Arachidonic acid (AA) has three main metabolic pathways: the cycloxygenases (COXs) pathway, the lipoxygenases (LOXs) pathway, and the cytochrome P450s (CYPs) pathway. AA produces epoxyeicosatrienoic acids (EETs) through the CYPs pathway. EETs are very unstable in vivo and can be degraded in seconds to minutes. EETs have multiple degradation pathways, but are mainly degraded in the presence of soluble epoxide hydrolase (sEH). sEH is an enzyme of bifunctional nature, and current research focuses on the activity of its C-terminal epoxide hydrolase (sEH-H), which hydrolyzes the EETs to the corresponding inactive or low activity diol. Previous studies have reported that EETs have cardiovascular protective effects, and the activity of sEH-H plays a role by degrading EETs and inhibiting their protective effects. The activity of sEH-H plays a different role in different cells, such as inhibiting endothelial cell proliferation and migration, but promoting vascular smooth muscle cell proliferation and migration. Therefore, it is of interest whether the activity of sEH-H is involved in the initiation and progression of cardiovascular diseases by affecting the function of different cells through EETs.
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Affiliation(s)
- Shan Jiang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
| | - Siyi Han
- Department of Anesthesiology and Pain Medicine, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dao Wen Wang
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Genetics and Molecular Mechanisms of Cardiological Disorders, Wuhan, China
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2
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Cao S, Tang J, Huang Y, Li G, Li Z, Cai W, Yuan Y, Liu J, Huang X, Zhang H. The Road of Solid Tumor Survival: From Drug-Induced Endoplasmic Reticulum Stress to Drug Resistance. Front Mol Biosci 2021; 8:620514. [PMID: 33928116 PMCID: PMC8076597 DOI: 10.3389/fmolb.2021.620514] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 02/12/2021] [Indexed: 12/24/2022] Open
Abstract
Endoplasmic reticulum stress (ERS), which refers to a series of adaptive responses to the disruption of endoplasmic reticulum (ER) homeostasis, occurs when cells are treated by drugs or undergo microenvironmental changes that cause the accumulation of unfolded/misfolded proteins. ERS is one of the key responses during the drug treatment of solid tumors. Drugs induce ERS by reactive oxygen species (ROS) accumulation and Ca2+ overload. The unfolded protein response (UPR) is one of ERS. Studies have indicated that the mechanism of ERS-mediated drug resistance is primarily associated with UPR, which has three main sensors (PERK, IRE1α, and ATF6). ERS-mediated drug resistance in solid tumor cells is both intrinsic and extrinsic. Intrinsic ERS in the solid tumor cells, the signal pathway of UPR-mediated drug resistance, includes apoptosis inhibition signal pathway, protective autophagy signal pathway, ABC transporter signal pathway, Wnt/β-Catenin signal pathway, and noncoding RNA. Among them, apoptosis inhibition is one of the major causes of drug resistance. Drugs activate ERS and its downstream antiapoptotic proteins, which leads to drug resistance. Protective autophagy promotes the survival of solid tumor cells by devouring the damaged organelles and other materials and providing new energy for the cells. ERS induces protective autophagy by promoting the expression of autophagy-related genes, such as Beclin-1 and ATG5–ATG12. ABC transporters pump drugs out of the cell, which reduces the drug-induced apoptosis effect and leads to drug resistance. In addition, the Wnt/β-catenin signal pathway is also involved in the drug resistance of solid tumor cells. Furthermore, noncoding RNA regulates the ERS-mediated survival and death of solid tumor cells. Extrinsic ERS in the solid tumor cells, such as ERS in immune cells of the tumor microenvironment (TME), also plays a crucial role in drug resistance by triggering immunosuppression. In immune system cells, ERS in dendritic cells (DCs) and myeloid-derived suppressor cells (MDSCs) influences the antitumor function of normal T cells, which results in immunosuppression. Meanwhile, ERS in T cells can also cause impaired functioning and apoptosis, leading to immunosuppression. In this review, we highlight the core molecular mechanism of drug-induced ERS involved in drug resistance, thereby providing a new strategy for solid tumor treatment.
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Affiliation(s)
- Shulong Cao
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Jingyi Tang
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Yichun Huang
- Clinical Medical College, Hubei University of Science and Technology, Xianning, China
| | - Gaofeng Li
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Zhuoya Li
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Wenqi Cai
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Yuning Yuan
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Junlong Liu
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
| | - Xuqun Huang
- Edong Healthcare Group, Department of Medical Oncology, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Huangshi, China
| | - Haiyuan Zhang
- School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, China
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3
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Kawaguchi K, Park J, Masaki T, Mezaki Y, Ochi S, Matsuura T. Comprehensive gene expression profiling of human astrocytes treated with a hepatic encephalopathy-inducible factor, alpha 1-antichymotripsin. Biochem Biophys Rep 2020; 24:100855. [PMID: 33299931 PMCID: PMC7704407 DOI: 10.1016/j.bbrep.2020.100855] [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: 06/29/2020] [Revised: 09/29/2020] [Accepted: 11/09/2020] [Indexed: 11/22/2022] Open
Abstract
Astrocytes are major glial cells that play a critical role in brain homeostasis. Abnormalities in astrocytic function, such as hepatic encephalopathy (HE) during acute liver failure, can result in brain death following brain edema and the associated astrocyte swelling. Recently, we have identified alpha 1-antichymotripsin (ACT) to be a biomarker candidate for HE. ACT induces astrocyte swelling by upregulating aquaporin 4 (AQP4); however, the causal connection between these proteins is not clear yet. In this study, we utilized a microarray profile to screen the differentially expressed genes (DEGs) in astrocytes treated with ACT. We then performed Gene Ontology, REACTOME, and the comprehensive resource of mammalian protein complexes (CORUM) enrichment analyses of the identified DEGs. The results of these analyses indicated that the DEGs were enriched in pathways activating adenylate cyclase (AC)-coupled G protein-coupled receptors (GPCRs) and therefore were involved in the cyclic adenosine monophosphate (cAMP) signaling. These results indicate that ACT may act as a ligand of Gs-GPCRs and subsequently upregulate cAMP. As cAMP is known to upregulate AQP4 in astrocytes, these results suggest that ACT may upregulate AQP4 by activating AC GPCRs and therefore serve as a therapeutic target for acute HE. The expression of AQP4 is induced by alpha 1-antichymotripsin dependent activation of adenylate cyclase. Combination treatment of alpha 1-antichymotripsin and arginine vasopressin enhance the activation of adenylate cyclase. Alpha 1-antichemotripsin might be a therapeutic target for acute hepatic encephalopathy.
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Affiliation(s)
- Kenji Kawaguchi
- Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, 105-8461, Japan
| | - Jonghyuk Park
- Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, 105-8461, Japan
| | - Takahiro Masaki
- Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, 105-8461, Japan
| | - Yoshihiro Mezaki
- Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, 105-8461, Japan
| | - Sae Ochi
- Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, 105-8461, Japan
| | - Tomokazu Matsuura
- Department of Laboratory Medicine, The Jikei University School of Medicine, Minato-ku, Tokyo, 105-8461, Japan
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González-Ponce HA, Martínez-Saldaña MC, Tepper PG, Quax WJ, Buist-Homan M, Faber KN, Moshage H. Betacyanins, major components in Opuntia red-purple fruits, protect against acetaminophen-induced acute liver failure. Food Res Int 2020; 137:109461. [PMID: 33233135 DOI: 10.1016/j.foodres.2020.109461] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 04/05/2020] [Accepted: 06/16/2020] [Indexed: 01/06/2023]
Abstract
Acetaminophen (APAP) misuse or overdose is the most important cause of drug-induced acute liver failure. Overdoses of acetaminophen induce oxidative stress and liver injury by the electrophilic metabolite N-acetyl-p-benzoquinone imine (NAPQI). Plant-based medicine has been used for centuries against diseases or intoxications due to their biological activities. The aim of this study was to evaluate the therapeutic value of Opuntia robusta and Opuntia streptacantha fruit extracts against acetaminophen-induced liver damage and to identify the major biocomponents on them. Opuntia fruit extracts were obtained by peeling and squeezing each specie, followed by lyophilization. HPLC was used to characterize the extracts. The effect of the extracts against acetaminophen-induced acute liver injury was evaluated both in vivo and in vitro using biochemical, molecular and histological determinations. The results showed that betacyanins are the main components in the analyzed Opuntia fruit extracts, with betanin as the highest concentration. Therapeutic treatments with Opuntia extracts reduced biochemical, molecular and histological markers of liver (in vivo) and hepatocyte (in vitro) injury. Opuntia extracts reduced the APAP-increased expression of the stress-related gene Gadd45b. Furthermore, Opuntia extracts exerted diverse effects on the antioxidant related genes Sod2, Gclc and Hmox1, independent of their ROS-scavenging ability. Therefore, betacyanins as betanin from Opuntia robusta and Opuntia streptacantha fruits are promising nutraceutical compounds against oxidative liver damage.
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Affiliation(s)
- Herson Antonio González-Ponce
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, the Netherlands.
| | | | - Pieter G Tepper
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, the Netherlands
| | - Wim J Quax
- Department of Chemical and Pharmaceutical Biology, Groningen Research Institute of Pharmacy, University of Groningen, the Netherlands
| | - Manon Buist-Homan
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, the Netherlands; Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, the Netherlands.
| | - Klaas Nico Faber
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, the Netherlands; Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, the Netherlands.
| | - Han Moshage
- Department of Gastroenterology and Hepatology, University Medical Center Groningen, University of Groningen, the Netherlands; Department of Laboratory Medicine, University Medical Center Groningen, University of Groningen, the Netherlands.
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5
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Cao Y, Smith W, Yan L, Kong L. Overview of Cellular Mechanisms and Signaling Pathways of Piceatannol. Curr Stem Cell Res Ther 2020; 15:4-10. [PMID: 30947674 DOI: 10.2174/1574888x14666190402100054] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/26/2018] [Accepted: 02/07/2019] [Indexed: 11/22/2022]
Abstract
Stilbenoids are a group of naturally occurring phenolic compounds found in various plant species. They share a common backbone structure known as stilbene. However, differences in the nature and position of substituents have made it possible to produce many derivatives. Piceatannol [PT], a hydroxylated derivative from resveratrol, exerts various biological activities ranging from cancer prevention, cardio- protection, neuro-protection, anti-diabetic, depigmentation and so on. Although positive results were obtained in most cell culture and animal studies, the relevant cellular and molecular mechanisms of cytokines and signaling pathway about their biological effects still unclear. Thus, in the current review, we focus on the latest findings of PT on cellular biology in order to better understand the underlying therapeutic mechanisms of PT among various diseases.
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Affiliation(s)
- Yang Cao
- Honghui Hospital, Xi'an Jiaotong University, School of Medicine, Xi'an, China.,Yan'an University Medical School, Yan'an, China
| | - Wanli Smith
- Department of Neuroscience, Johns Hopkins University, Baltimore, Maryland, United States
| | - Liang Yan
- Honghui Hospital, Xi'an Jiaotong University, School of Medicine, Xi'an, China
| | - Lingbo Kong
- Honghui Hospital, Xi'an Jiaotong University, School of Medicine, Xi'an, China
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6
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Görg B, Karababa A, Schütz E, Paluschinski M, Schrimpf A, Shafigullina A, Castoldi M, Bidmon HJ, Häussinger D. O-GlcNAcylation-dependent upregulation of HO1 triggers ammonia-induced oxidative stress and senescence in hepatic encephalopathy. J Hepatol 2019; 71:930-941. [PMID: 31279900 DOI: 10.1016/j.jhep.2019.06.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 06/24/2019] [Accepted: 06/27/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND & AIMS Cerebral oxidative stress plays an important role in the pathogenesis of hepatic encephalopathy (HE), but the underlying mechanisms are incompletely understood. Herein, we analyzed a role of heme oxygenase (HO)1, iron and NADPH oxidase 4 (Nox4) for the induction of oxidative stress and senescence in HE. METHODS Gene and protein expression in human post-mortem brain samples was analyzed by gene array and western blot analysis. Mechanisms and functional consequences of HO1 upregulation were studied in NH4Cl-exposed astrocytes in vitro by western blot, qPCR and super-resolution microscopy. RESULTS HO1 and the endoplasmic reticulum (ER) stress marker grp78 were upregulated, together with changes in the expression of multiple iron metabolism-related genes, in post-mortem brain samples from patients with liver cirrhosis and HE. NH4Cl elevated HO1 protein and mRNA in cultured astrocytes through glutamine synthetase (GS)-dependent upregulation of glutamine/fructose amidotransferases 1/2 (GFAT1/2), which blocked the transcription of the HO1-targeting miR326-3p in a O-GlcNAcylation dependent manner. Upregulation of HO1 by NH4Cl triggered ER stress and was associated with elevated levels of free ferrous iron and expression changes in iron metabolism-related genes, which were largely abolished after knockdown or inhibition of GS, GFAT1/2, HO1 or iron chelation. NH4Cl, glucosamine (GlcN) and inhibition of miR326-3p upregulated Nox4, while knockdown of Nox4, GS, GFAT1/2, HO1 or iron chelation prevented NH4Cl-induced RNA oxidation and astrocyte senescence. Elevated levels of grp78 and O-GlcNAcylated proteins were also found in brain samples from patients with liver cirrhosis and HE. CONCLUSION The present study identified glucosamine synthesis-dependent protein O-GlcNAcylation as a novel mechanism in the pathogenesis of HE that triggers oxidative and ER stress, as well as senescence, through upregulation of HO1 and Nox4. LAY SUMMARY Patients with liver cirrhosis frequently exhibit hyperammonemia and suffer from cognitive and motoric dysfunctions, which at least in part involve premature ageing of the astrocytes in the brain. This study identifies glucosamine and an O-GlcNAcylation-dependent disruption of iron homeostasis as novel triggers of oxidative stress, thereby mediating ammonia toxicity in the brain.
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Affiliation(s)
- Boris Görg
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany.
| | - Ayşe Karababa
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Elina Schütz
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Martha Paluschinski
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Alina Schrimpf
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Aygul Shafigullina
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Mirco Castoldi
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Hans J Bidmon
- C.&O. Vogt Institute for Brain Research, Heinrich-Heine-University, 40225 Düsseldorf, Germany
| | - Dieter Häussinger
- Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University, 40225 Düsseldorf, Germany
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7
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Naiyer S, Bhattacharya A, Bhattacharya S. Advances in Entamoeba histolytica Biology Through Transcriptomic Analysis. Front Microbiol 2019; 10:1921. [PMID: 31481949 PMCID: PMC6710346 DOI: 10.3389/fmicb.2019.01921] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 08/05/2019] [Indexed: 12/13/2022] Open
Abstract
A large number of transcriptome-level studies in Entamoeba histolytica, the protozoan parasite that causes amoebiasis, have investigated gene expression patterns to help understand the pathology and biology of the organism. They have compared virulent and avirulent strains in lab culture and after tissue invasion, cells grown under different stress conditions, response to anti-amoebic drug treatments, and gene expression changes during the process of encystation. These studies have revealed interesting molecules/pathways that will help increase our mechanistic understanding of differentially expressed genes during growth perturbations and tissue invasion. Some of the important insights obtained from transcriptome studies include the observations that regulation of carbohydrate metabolism may be an important determinant for tissue invasion, while the novel up-regulated genes during encystation include phospholipase D, and meiotic genes, suggesting the possibility of meiosis during the process. Classification of genes according to expression levels showed that amongst the highly transcribed genes in cultured E. histolytica trophozoites were some virulence factors, raising the question of the role of these factors in normal parasite growth. Promoter motifs associated with differential gene expression and regulation were identified. Some of these motifs associated with high gene expression were located downstream of start codon, and were required for efficient transcription. The listing of E. histolytica genes according to transcript expression levels will help us determine the scale of post-transcriptional regulation, and the possible roles of predicted promoter motifs. The small RNA transcriptome is a valuable resource for detailed structural and functional analysis of these molecules and their regulatory roles. These studies provide new drug targets and enhance our understanding of gene regulation in E. histolytica.
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Affiliation(s)
- Sarah Naiyer
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Alok Bhattacharya
- School of Life Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Sudha Bhattacharya
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India
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8
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Maamoun H, Benameur T, Pintus G, Munusamy S, Agouni A. Crosstalk Between Oxidative Stress and Endoplasmic Reticulum (ER) Stress in Endothelial Dysfunction and Aberrant Angiogenesis Associated With Diabetes: A Focus on the Protective Roles of Heme Oxygenase (HO)-1. Front Physiol 2019; 10:70. [PMID: 30804804 PMCID: PMC6378556 DOI: 10.3389/fphys.2019.00070] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 01/21/2019] [Indexed: 12/17/2022] Open
Abstract
Type-2 diabetes prevalence is continuing to rise worldwide due to physical inactivity and obesity epidemic. Diabetes and fluctuations of blood sugar are related to multiple micro- and macrovascular complications, that are attributed to oxidative stress, endoplasmic reticulum (ER) activation and inflammatory processes, which lead to endothelial dysfunction characterized, among other features, by reduced availability of nitric oxide (NO) and aberrant angiogenic capacity. Several enzymatic anti-oxidant and anti-inflammatory agents have been found to play protective roles against oxidative stress and its downstream signaling pathways. Of particular interest, heme oxygenase (HO) isoforms, specifically HO-1, have attracted much attention as major cytoprotective players in conditions associated with inflammation and oxidative stress. HO operates as a key rate-limiting enzyme in the process of degradation of the iron-containing molecule, heme, yielding the following byproducts: carbon monoxide (CO), iron, and biliverdin. Because HO-1 induction was linked to pro-oxidant states, it has been regarded as a marker of oxidative stress; however, accumulating evidence has established multiple cytoprotective roles of the enzyme in metabolic and cardiovascular disorders. The cytoprotective effects of HO-1 depend on several cellular mechanisms including the generation of bilirubin, an anti-oxidant molecule, from the degradation of heme; the induction of ferritin, a strong chelator of free iron; and the release of CO, that displays multiple anti-inflammatory and anti-apoptotic actions. The current review article describes the major molecular mechanisms contributing to endothelial dysfunction and altered angiogenesis in diabetes with a special focus on the interplay between oxidative stress and ER stress response. The review summarizes the key cytoprotective roles of HO-1 against hyperglycemia-induced endothelial dysfunction and aberrant angiogenesis and discusses the major underlying cellular mechanisms associated with its protective effects.
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Affiliation(s)
- Hatem Maamoun
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Tarek Benameur
- College of Medicine, King Faisal University, Al-Ahsa, Saudi Arabia
| | - Gianfranco Pintus
- Department of Biomedical Sciences, College of Health Sciences, Qatar University, Doha, Qatar
| | - Shankar Munusamy
- Department of Pharmaceutical and Administrative Sciences, College of Pharmacy and Health Sciences, Drake University, Des Moines, IA, United States
| | - Abdelali Agouni
- Department of Pharmaceutical Sciences, College of Pharmacy, Qatar University, Doha, Qatar
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9
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Luz NF, DeSouza-Vieira T, De Castro W, Vivarini AC, Pereira L, França RR, Silveira-Mattos PS, Costa DL, Teixeira C, Meneses C, Boaventura VS, de Oliveira CI, Lopes UG, Aronson N, Andrade BB, Brodskyn CI, Valenzuela JG, Kamhawi S, Borges VM. Lutzomyia longipalpis Saliva Induces Heme Oxygenase-1 Expression at Bite Sites. Front Immunol 2018; 9:2779. [PMID: 30546363 PMCID: PMC6279893 DOI: 10.3389/fimmu.2018.02779] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 11/12/2018] [Indexed: 12/21/2022] Open
Abstract
Sand flies bite mammalian hosts to obtain a blood meal, driving changes in the host inflammatory response that support the establishment of Leishmania infection. This effect is partially attributed to components of sand fly saliva, which are able to recruit and activate leukocytes. Our group has shown that heme oxygenase-1 (HO-1) favors Leishmania survival in infected cells by reducing inflammatory responses. Here, we show that exposure to sand fly bites is associated with induction of HO-1 in vivo. Histopathological analyses of skin specimens from human volunteers experimentally exposed to sand fly bites revealed that HO-1 and Nrf2 are produced at bite sites in the skin. These results were recapitulated in mice ears injected with a salivary gland sonicate (SGS) or exposed to sand fly bites, indicating that vector saliva may be a key factor in triggering HO-1 expression. Resident skin macrophages were the main source HO-1 at 24–48 h after bites. Additionally, assays in vivo after bites and in vitro after stimulation with saliva both demonstrated that HO-1 production by macrophages was Nrf2-dependent. Collectively, our data demonstrates that vector saliva induces early HO-1 production at the bite sites, representing a major event associated with establishment of naturally-transmitted Leishmania infections.
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Affiliation(s)
- Nivea F Luz
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil
| | - Thiago DeSouza-Vieira
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Waldione De Castro
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Aislan Carvalho Vivarini
- Laboratory of Molecular Parasitology, Center of Health Science, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lais Pereira
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Riam Rocha França
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
| | - Paulo S Silveira-Mattos
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
| | - Diego L Costa
- Immunobiology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | | | - Claudio Meneses
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Viviane S Boaventura
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
| | - Camila I de Oliveira
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
| | - Ulisses Gazos Lopes
- Laboratory of Molecular Parasitology, Center of Health Science, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Naomi Aronson
- Infectious Diseases Division, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Bruno B Andrade
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil.,Multinational Organization Network Sponsoring Translational and Epidemiological Research Initiative, Fundação José Silveira, Salvador, Brazil
| | - Claudia I Brodskyn
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
| | - Jesus G Valenzuela
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Shaden Kamhawi
- Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD, United States
| | - Valeria M Borges
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation, Salvador, Brazil.,Faculdade de Medicina da Bahia, Universidade Federal da Bahia, Salvador, Brazil
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10
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Foster AJ, Platt MJ, Huber JS, Eadie AL, Arkell AM, Romanova N, Wright DC, Gillis TE, Murrant CL, Brunt KR, Simpson JA. Central-acting therapeutics alleviate respiratory weakness caused by heart failure-induced ventilatory overdrive. Sci Transl Med 2018; 9:9/390/eaag1303. [PMID: 28515334 DOI: 10.1126/scitranslmed.aag1303] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 03/13/2017] [Indexed: 12/22/2022]
Abstract
Diaphragmatic weakness is a feature of heart failure (HF) associated with dyspnea and exertional fatigue. Most studies have focused on advanced stages of HF, leaving the cause unresolved. The long-standing theory is that pulmonary edema imposes a mechanical stress, resulting in diaphragmatic remodeling, but stable HF patients rarely exhibit pulmonary edema. We investigated how diaphragmatic weakness develops in two mouse models of pressure overload-induced HF. As in HF patients, both models had increased eupneic respiratory pressures and ventilatory drive. Despite the absence of pulmonary edema, diaphragmatic strength progressively declined during pressure overload; this decline correlated with a reduction in diaphragm cross-sectional area and preceded evidence of muscle weakness. We uncovered a functional codependence between angiotensin II and β-adrenergic (β-ADR) signaling, which increased ventilatory drive. Chronic overdrive was associated with increased PERK (double-stranded RNA-activated protein kinase R-like ER kinase) expression and phosphorylation of EIF2α (eukaryotic translation initiation factor 2α), which inhibits protein synthesis. Inhibition of β-ADR signaling after application of pressure overload normalized diaphragm strength, Perk expression, EIF2α phosphorylation, and diaphragmatic cross-sectional area. Only drugs that were able to penetrate the blood-brain barrier were effective in treating ventilatory overdrive and preventing diaphragmatic atrophy. These data provide insight into why similar drugs have different benefits on mortality and symptomatology, despite comparable cardiovascular effects.
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Affiliation(s)
- Andrew J Foster
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Mathew J Platt
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Jason S Huber
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Ashley L Eadie
- Department of Pharmacology, Dalhousie Medicine, Saint John, New Brunswick E2L 4L5, Canada
| | - Alicia M Arkell
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Nadya Romanova
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - David C Wright
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Todd E Gillis
- Department of Integrative Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Coral L Murrant
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Keith R Brunt
- Department of Pharmacology, Dalhousie Medicine, Saint John, New Brunswick E2L 4L5, Canada.
| | - Jeremy A Simpson
- Department of Human Health and Nutritional Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
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11
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Wang YJ, Peng QY, Deng SY, Chen CX, Wu L, Huang L, Zhang LN. Hemin protects against oxygen-glucose deprivation-induced apoptosis activation via neuroglobin in SH-SY5Y cells. Neurochem Res 2017; 42:2208-2217. [PMID: 28316021 DOI: 10.1007/s11064-017-2230-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 02/28/2017] [Accepted: 03/10/2017] [Indexed: 02/07/2023]
Abstract
This study aimed to investigate the mechanism underlying the neuroprotective effect of hemin in oxygen-glucose deprivation (OGD)-treated neurons. OGD-treated SH-SY5Y cells (human neuroblastoma cells) were used in the study. The cellular viability of SH-SY5Y cells was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and the cell apoptosis rate was determined by flow cytometry analysis with Annexin V-fluorescein isothiocyanate and propidium iodide staining with or without hemin pretreatment. Cell viability and apoptotic activation were detected after hemin administration combined with neuroglobin (Nqb), thioredoxin-1, peroxiredoxin-2, or heme oxygenase-1 siRNA transient transfection. The release of cytochrome c from mitochondria and the interaction between Ngb and cytochrome c were examined with hemin pretreatment. Hemin had a neuroprotective effect in OGD-treated SH-SY5Y cells, which was mainly mediated by the upregulation of Ngb. Moreover, the release of cytochrome c from mitochondria was inhibited by hemin-induced Ngb expression through facilitating the interaction of Ngb with cytochrome c in mitochondria. The present findings provided new insights into the neuroprotective mechanisms of hemin. It was concluded that low-dose hemin pretreatment had a neuroprotective effect in OGD-treated SH-SY5Y cells, through inhibiting cell apoptosis. The neuroprotective effects of hemin following hypoxic-ischemic neuronal damage were mainly mediated by Ngb. One underlying mechanism was hemin-induced overexpression of mitochondrial Ngb, which inhibited endogenous apoptosis via the association with cytochrome c.
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Affiliation(s)
- Yun-Jia Wang
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China
| | - Qian-Yi Peng
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China
| | - Song-Yun Deng
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China
| | - Cai-Xia Chen
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China
| | - Long Wu
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China
| | - Li Huang
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China
| | - Li-Na Zhang
- Department of Intensive Care Unit, Xiangya Hospital, Central South University, No 87, Xiangya Road, Changsha, 410008, China.
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12
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Expression of Endoplasmic Reticulum-Mediated Stress Proteins in FK506-Treated T-Lymphocytes. Transplant Proc 2017; 48:1292-6. [PMID: 27320607 DOI: 10.1016/j.transproceed.2015.10.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/03/2015] [Indexed: 01/11/2023]
Abstract
BACKGROUND FK506-induced apoptotic endoplasmic reticulum (ER)-mediated stress protein expression was investigated in Jurkat human T-lymphocytes. METHODS The effect of FK506 on apoptosis and cell viability were examined. FK506-induced apoptosis was confirmed by nuclear fragmentation after DAPI staining. Expression of apoptotic ER-mediated stress proteins was examined by means of Western blotting of Grp78/BiP, Grp94, double-stranded RNA-dependent protein kinase (PKR)-like ER kinase (PERK), phosphor-PERK, CHOP/GADD153, and Bak. A flow cytometry analysis was performed after DAF-DA or DCF-DA staining. FK506-induced apoptosis was dose-dependent (10 nmol/L) and time-dependent (72 hours). RESULTS Grp78/BiP and Grp94 expressions were increased 36 hours after FK506 treatment. Increased phospho-PERK expression was observed 6 hours after FK506 treatment and peak activation of phospho-PERK was observed at 36 hours. CHOP/GADD153 expression was increased 48 hours after FK506 treatment. Expression of iNOS after FK506 treatment began to increase at 12 hours, peaked at 24 hours, and decreased after 36 hours. CONCLUSIONS From these results, we confirmed that FK506 induces apoptosis and acts dose- and time-dependently to decrease the viability of Jurkat cells through activation of apoptosis signaling and expression of apoptotic ER-mediated stress proteins.
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Piceatannol attenuates homocysteine-induced endoplasmic reticulum stress and endothelial cell damage via heme oxygenase-1 expression. Amino Acids 2016; 49:735-745. [DOI: 10.1007/s00726-016-2375-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 12/09/2016] [Indexed: 01/22/2023]
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14
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Kim MH, Kang HM, Kim CE, Han S, Kim SW. Ramipril inhibits high glucose-stimulated up-regulation of adhesion molecules via the ERK1/2 MAPK signaling pathway in human umbilical vein endothelial cells. Cell Mol Biol Lett 2016; 20:937-47. [PMID: 26636413 DOI: 10.1515/cmble-2015-0053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 11/12/2015] [Indexed: 11/15/2022] Open
Abstract
Ramipril has recently been shown to have anti-atherogenic properties. However, the specific mechanisms underlying these effects remain unclear. The purpose of this study was to determine the effects of ramipril on induction of adhesion molecules in human umbilical vein endothelial cells (HUVECs) using high-glucose (HG) conditions and to investigate possible underlying molecular mechanisms. The effects of ramipril on expression of intercellular adhesion molecule (ICAM)-1, vascular cell adhesion molecule (VCAM)-1 production, and ERK phosphorylation were examined in HG-induced HUVECs with inhibitors targeting the mitogen-activated protein kinase (MAPK) signaling pathway. HG induced the expression of the adhesion molecules ICAM-1 and VCAM-1. Pretreatment with ramipril drastically inhibited ICAM-1 and VCAM-1 production in a time- and dose-dependent manner. Moreover, upon investigating the effects of ramipril on the MAPK/extracellular signal-regulated kinase (ERK) signaling pathway, we found that ramipril completely inhibited HG-induced phosphorylation of ERK1/2. ERK inhibitors completely prevented the inhibitory effect of HG. This study demonstrated that ramipril reduces HG-stimulated induction of ICAM-1 and VCAM-1 expression via MAPK signaling, which may be useful for inhibition of atherosclerosis.
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15
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Protective effects of quercetin on dieldrin-induced endoplasmic reticulum stress and apoptosis in dopaminergic neuronal cells. Neuroreport 2016; 27:1140-6. [DOI: 10.1097/wnr.0000000000000667] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Matsumoto A, Thompson D, Chen Y, Vasiliou V, Kawamoto T, Ichiba M. Heme oxygenase 1 protects ethanol-administered liver tissue in Aldh2 knockout mice. Alcohol 2016; 52:49-54. [PMID: 27139237 DOI: 10.1016/j.alcohol.2016.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 12/14/2015] [Accepted: 02/18/2016] [Indexed: 12/20/2022]
Abstract
A genetic polymorphism of the aldehyde dehydrogenase 2 (ALDH2) gene, ALDH2*2, encodes an enzymatically defective ALDH2 protein. Recent epidemiological studies suggest that possessing ALDH2*2 is a protective factor for liver tissue in healthy individuals, although these studies lack a mechanistic explanation. Our animal studies have shown the same trend: levels of serum alanine transaminase (ALT), hepatic malondialdehyde (MDA), and hepatic tumor necrosis factor alpha (TNF-α) were lower in Aldh2 knockout (Aldh2(-/-)) mice than in wild-type (Aldh2(+/+)) mice after ethanol administration. To propose a mechanistic hypothesis, residual liver specimens from the previous experiment were analyzed. An anti-oxidative protein, heme oxygenase 1 (HO-1), and an oxidative stress-producing protein, cytochrome P450 2E1 (CYP2E1), were detected at higher levels in Aldh2(-/-) mice than in Aldh2(+/+) mice, regardless of ethanol treatment. Other oxidative stress-related proteins and inflammatory cytokines did not show such a significant difference. To conclude, we propose a protective role of HO-1 in individuals with ALDH2*2. Our continued studies support the epidemiological finding that possession of ALDH2*2 is a protective factor in the liver of the healthy individual.
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Affiliation(s)
- Akiko Matsumoto
- Department of Social Medicine, Saga University School of Medicine, 5-1-1 Nabeshima, Saga 849-8501, Japan.
| | - David Thompson
- Department of Clinical Pharmacy, University of Colorado School of Pharmacy, 12850 E. Montview Blvd., Aurora, CO 80045, USA
| | - Ying Chen
- Department of Pharmaceutical Sciences, University of Colorado School of Pharmacy, Aurora, CO 80045, USA
| | - Vasilis Vasiliou
- Department of Pharmaceutical Sciences, University of Colorado School of Pharmacy, Aurora, CO 80045, USA
| | - Toshihiro Kawamoto
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi, Kitakyushu, Fukuoka 807-0804, Japan
| | - Masayoshi Ichiba
- Department of Social Medicine, Saga University School of Medicine, 5-1-1 Nabeshima, Saga 849-8501, Japan
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17
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Sato K, Tatsunami R, Yama K, Murao Y, Tampo Y. Glycolaldehyde induces endoplasmic reticulum stress and apoptosis in Schwann cells. Toxicol Rep 2015; 2:1454-1462. [PMID: 28962488 PMCID: PMC5598486 DOI: 10.1016/j.toxrep.2015.10.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 10/06/2015] [Accepted: 10/26/2015] [Indexed: 02/02/2023] Open
Abstract
Glycolaldehyde induces endoplasmic reticulum stress in Schwann cells. Glycolaldehyde causes apoptosis in Schwann cells. Nrf2 activated by glycolaldehyde plays a protective role in the cytotoxicity.
Schwann cell injury is caused by diabetic neuropathy. The apoptosis of Schwann cells plays a pivotal role in diabetic nerve dysfunction. Glycolaldehyde is a precursor of advanced glycation end products that contribute to the pathogenesis of diabetic neuropathy. In this study, we examined whether glycolaldehyde induces endoplasmic reticulum (ER) stress and apoptosis in rat Schwann cells. Schwann cells treated with 500 μM glycolaldehyde showed morphological changes characteristic of apoptosis. Glycolaldehyde activated apoptotic signals, such as caspase-3 and caspase-8. Furthermore, it induced ER stress response involving RNA-dependent protein kinase-like ER kinase (PERK), inositol-requiring ER-to-nucleus signal kinase 1α (IRE1α), and eukaryotic initiation factor 2α (eIF2α). In addition, glycolaldehyde activated CCAAT/enhancer-binding homologous protein (CHOP), an ER stress response factor crucial to executing apoptosis. Knockdown of nuclear factor E2-related factor 2 (Nrf2), which is involved in the promotion of cell survival following ER stress, enhanced glycolaldehyde-induced cytotoxicity, indicating that Nrf2 plays a protective role in the cytotoxicity caused by glycolaldehyde. Taken together, these findings indicate that glycolaldehyde is capable of inducing apoptosis and ER stress in Schwann cells. The ER stress induced by glycolaldehyde may trigger the glycolaldehyde-induced apoptosis in Schwann cells. This study demonstrated for the first time that glycolaldehyde induced ER stress.
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Key Words
- AGEs, advanced glycation end products
- ATF6, activating transcription factor 6
- Apoptosis
- CHOP, CCAAT/enhancer-binding homologous protein
- ER, endoplasmic reticulum
- Endoplasmic reticulum stress
- GA, glycolaldehyde
- Glycolaldehyde
- HO-1, heme oxygenase-1
- IRE1, inositol-requiring ER-to-nucleus signal kinase 1
- MG, methylglyoxal
- Nrf2, nuclear factor E2-related factor 2
- Nuclear factor E2-related factor 2
- PERK, RNA-dependent protein kinase-like ER kinase
- Schwann cell
- eIF2, eukaryotic initiation factor 2
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18
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Liu X, Zhang Z, Cheng Z, Zhang J, Xu S, Liu H, Jia H, Jin Y. Spinal Heme Oxygenase-1 (HO-1) Exerts Antinociceptive Effects Against Neuropathic Pain in a Mouse Model of L5 Spinal Nerve Ligation. PAIN MEDICINE 2015; 17:220-9. [PMID: 26361083 DOI: 10.1111/pme.12906] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xiaoming Liu
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
| | - Zhijun Zhang
- Pain Research Laboratory, Institute of Nautical Medicine, Jiangsu Key Laboratory of Neuroregeneration; Nantong University; Nantong 226001 China
| | - Zhuqiang Cheng
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
| | - Jie Zhang
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
| | - Shuangshuang Xu
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
| | - Hongjun Liu
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
| | - Hongbin Jia
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
| | - Yi Jin
- Department of Anesthesiology, Pain Management Center; Nanjing Jinling Hospital; Nanjing 210003 China
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Nagappan AS, Varghese J, James JV, Jacob M. Indomethacin induces endoplasmic reticulum stress, but not apoptosis, in the rat kidney. Eur J Pharmacol 2015; 761:199-205. [DOI: 10.1016/j.ejphar.2015.04.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 04/20/2015] [Accepted: 04/21/2015] [Indexed: 12/20/2022]
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20
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Kim S, Joe Y, Kim HJ, Kim YS, Jeong SO, Pae HO, Ryter SW, Surh YJ, Chung HT. Endoplasmic reticulum stress-induced IRE1α activation mediates cross-talk of GSK-3β and XBP-1 to regulate inflammatory cytokine production. THE JOURNAL OF IMMUNOLOGY 2015; 194:4498-506. [PMID: 25821218 DOI: 10.4049/jimmunol.1401399] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 02/24/2015] [Indexed: 12/22/2022]
Abstract
IL-1β and TNF-α are important proinflammatory cytokines that respond to mutated self-antigens of tissue damage and exogenous pathogens. The endoplasmic reticulum (ER) stress and unfolded protein responses are related to the induction of proinflammatory cytokines. However, the detailed molecular pathways by which ER stress mediates cytokine gene expression have not been investigated. In this study, we found that ER stress-induced inositol-requiring enzyme (IRE)1α activation differentially regulates proinflammatory cytokine gene expression via activation of glycogen synthase kinase (GSK)-3β and X-box binding protein (XBP)-1. Surprisingly, IL-1β gene expression was modulated by IRE1α-mediated GSK-3β activation, but not by XBP-1. However, IRE1α-mediated XBP-1 splicing regulated TNF-α gene expression. SB216763, a GSK-3 inhibitor, selectively inhibited IL-1β gene expression, whereas the IRE1α RNase inhibitor STF083010 suppressed only TNF-α production. Additionally, inhibition of GSK-3β greatly increased IRE1α-dependent XBP-1 splicing. Our results identify an unsuspected differential role of downstream mediators GSK-3β and XBP-1 in ER stress-induced IRE1α activation that regulates cytokine production through signaling cross-talk. These results have important implications in the regulation of inflammatory pathways during ER stress, and they suggest novel therapeutic targets for diseases in which meta-inflammation plays a key role.
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Affiliation(s)
- Sena Kim
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Yeonsoo Joe
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - Hyo Jeong Kim
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea
| | - You-Sun Kim
- Department of Biochemistry, Ajou University School of Medicine, Graduate School, Ajou University, Suwon 443-721, Korea; Department of Biomedical Sciences, Graduate School, Ajou University, Suwon 443-721, Korea
| | - Sun Oh Jeong
- Department of Anesthesiology and Pain Medicine, Wonkwang University School of Medicine, Iksan 570-749, Korea
| | - Hyun-Ock Pae
- Department of Anesthesiology and Pain Medicine, Wonkwang University School of Medicine, Iksan 570-749, Korea
| | - Stefan W Ryter
- Department of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115; Joan and Sanford I. Weill Department of Medicine, New York-Presbyterian Hospital, Weill Cornell Medical College, New York, NY 10065; and
| | - Young-Joon Surh
- College of Pharmacy, Seoul National University, Seoul 151-742, Korea
| | - Hun Taeg Chung
- School of Biological Sciences, University of Ulsan, Ulsan 680-749, Korea;
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Inaba H, Fujita K, Ueno T. Design of biomaterials for intracellular delivery of carbon monoxide. Biomater Sci 2015; 3:1423-38. [DOI: 10.1039/c5bm00210a] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this mini-review, current development of biomaterials as carbon monoxide-releasing molecules (CORMs) for intracellular applications is summarized and discussed.
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Affiliation(s)
- Hiroshi Inaba
- Department of Chemistry
- Roger Adams Laboratory
- University of Illinois
- Urbana
- USA
| | - Kenta Fujita
- Department of Biomolecular Engineering
- Graduate School of Bioscience and Biotechnology
- Tokyo Institute of Technology
- Yokohama 226-8501
- Japan
| | - Takafumi Ueno
- Department of Biomolecular Engineering
- Graduate School of Bioscience and Biotechnology
- Tokyo Institute of Technology
- Yokohama 226-8501
- Japan
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22
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Li B, Zhu L, Wu T, Zhang J, Jiao X, Liu X, Wang Y, Meng X. Effects of Triterpenoid From Schisandra chinensis on Oxidative Stress in Alcohol-Induced Liver Injury in Rats. Cell Biochem Biophys 2014; 71:803-11. [DOI: 10.1007/s12013-014-0266-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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23
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Hemin attenuates cisplatin-induced acute renal injury in male rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:476430. [PMID: 25332751 PMCID: PMC4190123 DOI: 10.1155/2014/476430] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/30/2014] [Accepted: 09/06/2014] [Indexed: 01/28/2023]
Abstract
Background. The aim of this study is to investigate the protective effects of hemin (the heme oxygenase-1 [OH-1] inducer) against nephrotoxic effects induced by cisplatin [cis-diamminedichloroplatinum II (CP)] in male rats. Methods. The evaluation was performed through monitoring renal redox parameters: lipid peroxidation (LPO), glutathione peroxidase (GPx), superoxide dismutase (SOD), glutathione reductase (GR), and reduced glutathione (GSH). The work also examined renal function tests (urea and creatinine), tissue proinflammatory mediator like nitric oxide (NO), and kidney cytopathology. Results. A single intraperitoneal dose of CP (10 mg/kg b.w.) caused significant elevation of blood urea, serum creatinine, and renal LPO and NO, along with significant decline of the activities of GPx and GR, but renal SOD activity and GSH level were statistically insignificant as compared to control group. Subcutaneous injection of hemin (40 µmol/kg b.w.) partially ameliorated CP-induced renal damage, based on suppression of blood urea, serum creatinine, the renal MDA and NO levels, and increased antioxidant capacity in CP-treated rats. The results of histopathological and ultrastructural investigations supported the renoprotective effect of hemin against CP-induced acute toxicity. Conclusion. The induction of HO-1 by hemin is a promising approach in the treatment of CP-induced nephrotoxicity. However, further preclinical studies are warranted to test effectiveness of CP/hemin on the outcome of tumor chemotherapy.
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Hernández-Cuevas NA, Weber C, Hon CC, Guillen N. Gene expression profiling in Entamoeba histolytica identifies key components in iron uptake and metabolism. PLoS One 2014; 9:e107102. [PMID: 25210888 PMCID: PMC4161402 DOI: 10.1371/journal.pone.0107102] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Accepted: 08/12/2014] [Indexed: 01/25/2023] Open
Abstract
Entamoeba histolytica is an ameboid parasite that causes colonic dysentery and liver abscesses in humans. The parasite encounters dramatic changes in iron concentration during its invasion of the host, with relatively low levels in the intestinal lumen and then relatively high levels in the blood and liver. The liver notably contains sources of iron; therefore, the parasite's ability to use these sources might be relevant to its survival in the liver and thus the pathogenesis of liver abscesses. The objective of the present study was to identify factors involved in iron uptake, use and storage in E. histolytica. We compared the respective transcriptomes of E. histolytica trophozoites grown in normal medium (containing around 169 µM iron), low-iron medium (around 123 µM iron), iron-deficient medium (around 91 µM iron), and iron-deficient medium replenished with hemoglobin. The differentially expressed genes included those coding for the ATP-binding cassette transporters and major facilitator transporters (which share homology with bacterial siderophores and heme transporters) and genes involved in heme biosynthesis and degradation. Iron deficiency was associated with increased transcription of genes encoding a subset of cell signaling molecules, some of which have previously been linked to adaptation to the intestinal environment and virulence. The present study is the first to have assessed the transcriptome of E. histolytica grown under various iron concentrations. Our results provide insights into the pathways involved in iron uptake and metabolism in this parasite.
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Affiliation(s)
| | - Christian Weber
- Institut Pasteur, Unité Biologie Cellulaire du Parasitisme, Paris, France
- INSERM U786, Paris, France
| | - Chung-Chau Hon
- Institut Pasteur, Unité Biologie Cellulaire du Parasitisme, Paris, France
- INSERM U786, Paris, France
| | - Nancy Guillen
- Institut Pasteur, Unité Biologie Cellulaire du Parasitisme, Paris, France
- INSERM U786, Paris, France
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Yun N, Cho HI, Lee SM. Impaired autophagy contributes to hepatocellular damage during ischemia/reperfusion: heme oxygenase-1 as a possible regulator. Free Radic Biol Med 2014; 68:168-77. [PMID: 24365205 DOI: 10.1016/j.freeradbiomed.2013.12.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/15/2013] [Accepted: 12/11/2013] [Indexed: 12/14/2022]
Abstract
Liver ischemia and reperfusion (I/R) injury is characterized by oxidative stress that is accompanied by alterations of the endogenous defensive system. Emerging evidence suggests a protective role for autophagy induced by multiple stressors including reactive oxygen species. Meanwhile, heme oxygenase-1 (HO-1) has long been implicated in cytoprotection against oxidative stress in vitro and in vivo. Therefore, we investigated the impact of autophagy in the pathogenesis of liver I/R and its molecular mechanisms, particularly its linkage to HO-1. By using transmission electron microscopic analysis and biochemical autophagic flux assays with microtubule-associated protein 1 light chain 3-II, and beclin-1, representative autophagy markers, and p62, a selective substrate for autophagy, we found that reperfusion reduced autophagy both in the rat liver and in primary cultured hepatocytes. When autophagy was further inhibited with chloroquine or wortmannin, I/R-induced hepatocellular injury was aggravated. While livers that underwent I/R showed increased levels of mammalian target of rapamaycin and calpain 1 and 2, inhibition of calpain 1 and 2 induced an autophagic response in hepatocytes subjected to hypoxia/reoxygenation. HO-1 increased autophagy, and HO-1 reduced I/R-induced calcium overload in hepatocytes and prevented calpain 2 activation both in vivo and in vitro. Taken together, these findings suggest that the impaired autophagy during liver I/R, which is mediated by calcium overload and calpain activation, contributes to hepatocellular damage and the HO-1 system protects the liver from I/R injury through enhancing autophagy.
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Affiliation(s)
- Nari Yun
- School of Pharmacy, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Hong-Ik Cho
- School of Pharmacy, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Sun-Mee Lee
- School of Pharmacy, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea.
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Mechanistic study on the biological effects of silver and gold nanoparticles in Caco-2 cells – Induction of the Nrf2/HO-1 pathway by high concentrations of silver nanoparticles. Toxicol Lett 2014; 224:73-83. [DOI: 10.1016/j.toxlet.2013.09.020] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 07/24/2013] [Accepted: 09/30/2013] [Indexed: 11/21/2022]
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Antidiabetic potential of the heme oxygenase-1 inducer curcumin analogues. BIOMED RESEARCH INTERNATIONAL 2013; 2013:918039. [PMID: 24191253 PMCID: PMC3804143 DOI: 10.1155/2013/918039] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Accepted: 08/29/2013] [Indexed: 01/19/2023]
Abstract
Although there is a therapeutic treatment to combat diabetes, the identification of agents that may deal with its more serious aspects is an important medical field for research. Diabetes, which contributes to the risk of cardiovascular disease, is associated with a low-grade chronic inflammation (inflammatory stress), oxidative stress, and endoplasmic reticulum (ER) stress. Because the integration of these stresses is critical to the pathogenesis of diabetes, agents and cellular molecules that can modulate these stress responses are emerging as potential targets for intervention and treatment of diabetic diseases. It has been recognized that heme oxygenase-1 (HO-1) plays an important role in cellular protection. Because HO-1 can reduce oxidative stress, inflammatory stress, and ER stress, in part by exerting antioxidant, anti-inflammatory, and antiapoptotic effects, HO-1 has been suggested to play important roles in pathogenesis of diabetes. In the present review, we will explore our current understanding of the protective mechanisms of HO-1 in diabetes and present some emerging therapeutic options for HO-1 expression in treating diabetic diseases, together with the therapeutic potential of curcumin analogues that have their ability to induce HO-1 expression.
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Therapeutic roles of heme oxygenase-1 in metabolic diseases: curcumin and resveratrol analogues as possible inducers of heme oxygenase-1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:639541. [PMID: 24101950 PMCID: PMC3786516 DOI: 10.1155/2013/639541] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 08/04/2013] [Accepted: 08/12/2013] [Indexed: 01/10/2023]
Abstract
Metabolic diseases, such as insulin resistance, type II diabetes, and obesity, are associated with a low-grade chronic inflammation (inflammatory stress), oxidative stress, and endoplasmic reticulum (ER) stress. Because the integration of these stresses is critical to the pathogenesis of metabolic diseases, agents and cellular molecules that can modulate these stress responses are emerging as potential targets for intervention and treatment of metabolic diseases. It has been recognized that heme oxygenase-1 (HO-1) plays an important role in cellular protection. Because HO-1 can reduce inflammatory stress, oxidative stress, and ER stress, in part by exerting antioxidant, anti-inflammatory, and antiapoptotic effects, HO-1 has been suggested to play important roles in pathogenesis of metabolic diseases. In the present review, we will explore our current understanding of the protective mechanisms of HO-1 in metabolic diseases and present some emerging therapeutic options for HO-1 expression in treating metabolic diseases, together with the therapeutic potential of curcumin and resveratrol analogues that have their ability to induce HO-1 expression.
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Involvement of heme oxygenase-1 expression in neuroprotection by piceatannol, a natural analog and a metabolite of resveratrol, against glutamate-mediated oxidative injury in HT22 neuronal cells. Amino Acids 2013; 45:393-401. [DOI: 10.1007/s00726-013-1518-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Accepted: 05/17/2013] [Indexed: 02/06/2023]
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Chepelev NL, Enikanolaiye MI, Chepelev LL, Almohaisen A, Chen Q, Scoggan KA, Coughlan MC, Cao XL, Jin X, Willmore WG. Bisphenol A Activates the Nrf1/2-Antioxidant Response Element Pathway in HEK 293 Cells. Chem Res Toxicol 2013; 26:498-506. [DOI: 10.1021/tx400036v] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | - QiXuan Chen
- Nutrition Research Division, Food
Directorate, HPFB, Health Canada, Ottawa,
Ontario K1A OK9, Canada
| | - Kylie A. Scoggan
- Nutrition Research Division, Food
Directorate, HPFB, Health Canada, Ottawa,
Ontario K1A OK9, Canada
- Department of Biochemistry,
Microbiology and Immunology, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Melanie C. Coughlan
- Toxicology Research Division,
Food Directorate, HPFB, Health Canada,
Ottawa, Ontario K1A OL2, Canada
| | - Xu-Liang Cao
- Food Research Division, Food Directorate,
HPFB, Health Canada, Ottawa, Ontario K1A
OL2, Canada
| | - Xiaolei Jin
- Toxicology Research Division,
Food Directorate, HPFB, Health Canada,
Ottawa, Ontario K1A OL2, Canada
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Byun SJ, Son Y, Hwan Cho B, Chung HT, Pae HO. β-Lapachone, a substrate of NAD(P)H:quinone oxidoreductase, induces anti-inflammatory heme oxygenase-1 via AMP-activated protein kinase activation in RAW264.7 macrophages. J Clin Biochem Nutr 2012; 52:106-11. [PMID: 23525626 PMCID: PMC3593126 DOI: 10.3164/jcbn.12-80] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 10/25/2012] [Indexed: 01/20/2023] Open
Abstract
AMP-activated protein kinase (AMPK), a crucial regulator of energy metabolic homeostasis, is suggested to regulate inflammatory responses, but its precise mechanisms are not fully understood. It has been reported that pharmacological activation of AMPK induces heme oxygenase-1 (HO-1) expression. β-Lapachone (BL), a well-known substrate of NAD(P)H:quinone oxidoreductase (NQO1), has been demonstrated to stimulate AMPK activation via NQO1 activation, and to exert anti-inflammatory effects in macrophages. Here we examined whether AMPK activation by BL would be linked to HO-1 expression in RAW264.7 macrophages and whether HO-1 expression could mediate the anti-inflammatory effects of BL. BL treatment induced concentration- and time-dependent AMPK phosphorylation and HO-1 expression. 5-Aminoimidazole-4-carboxamide-1-β-D-ribofuranoside, an AMPK activator, also induced HO-1 expression. In contrast, compound C (CC), an inhibitor of AMPK activation, prevented the increase in BL-induced HO-1 expression. BL pretreatment reduced lipopolysaccharide-induced production of tumor necrosis factor-α, a pro-inflammatory cytokine, and expression of inducible nitric oxide synthase, a pro-inflammatory enzyme. These inhibitory effects BL were almost completely abolished by CC and partly by tin protoporphyrin-IX, a competitive inhibitor of HO-1. Accordingly, the present results indicate that BL induces anti-inflammatory HO-1 expression in macrophages via AMPK activation, providing one of possible mechanisms by which BL can exert anti-inflammatory effects.
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Affiliation(s)
- Seung Jae Byun
- Department of Surgery, Wonkwang University School of Medicine, 460 Iksandae-ro, Iksan 570-749, Republic of Korea
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Micelles of zinc protoporphyrin conjugated to N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer for imaging and light-induced antitumor effects in vivo. J Control Release 2012; 165:191-8. [PMID: 23220104 DOI: 10.1016/j.jconrel.2012.11.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 11/17/2012] [Accepted: 11/25/2012] [Indexed: 11/22/2022]
Abstract
We synthesized N-(2-hydroxypropyl)methacrylamide polymer conjugated with zinc protoporphyrin (HPMA-ZnPP) and evaluated its application for tumor detection by imaging and treatment by light exposure using in mouse sarcoma model. To characterize HPMA-ZnPP micelle, we measured its micellar size, surface charge, stability, photochemical, biochemical properties and tissue distribution. In vivo anti-tumor effect and fluorescence imaging were carried out to validate the tumor selective accumulation and therapeutic effect by inducing singlet oxygen by light exposure. HPMA-ZnPP was highly water soluble and formed micelles spontaneously having hydrophobic clustered head group of ZnPP, in aqueous solution, with a hydrodynamic diameter of 82.8±41.8 nm and zeta-potential of +1.12 mV. HPMA-ZnPP had a long plasma half-life and effectively and selectively accumulated in tumors. Although HPMA-ZnPP alone had no toxicity in S-180 tumor-bearing mice, light-irradiation significantly suppressed tumor growth in vivo, similar to the cytotoxicity to HeLa cells in vitro upon endoscopic light-irradiation. HPMA-ZnPP can visualize tumors by fluorescence after i.v. injection, which suggests that this micelle may be useful for both tumor imaging and therapy. Here we describe preparation of a new fluorescence nanoprobe that is useful for simultaneous tumor imaging and treatment, and application to fluorescence endoscopy is now at visible distance.
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Bulmer AC, Verkade HJ, Wagner KH. Bilirubin and beyond: a review of lipid status in Gilbert's syndrome and its relevance to cardiovascular disease protection. Prog Lipid Res 2012. [PMID: 23201182 DOI: 10.1016/j.plipres.2012.11.001] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Gilbert's syndrome (GS) is characterized by a benign, mildly elevated bilirubin concentration in the blood. Recent reports show clear protection from cardiovascular disease in this population. Protection of lipids, proteins and other macromolecules from oxidation by bilirubin represents the most commonly accepted mechanism contributing to protection in this group. However, a recent meta-analysis estimated that bilirubin only accounts for ~34% of the cardioprotective effects within analysed studies. To reveal the additional contributing variables we have explored circulating cholesterol and triacylglycerol concentrations, which appear to be decreased in hyperbilirubinemic individuals/animals, and are accompanied by lower body mass index in highly powered studies. These results suggest that bilirubin could be responsible for the development of a lean and hypolipidemic state in GS. Here we also discuss the possible contributing mechanisms that might reduce circulating cholesterol and triacylglycerol concentrations in individuals with syndromes affecting bilirubin metabolism/excretion, which we hope will stimulate future research in the area. In summary, this article is the first review of lipid status in animal and human studies of hyperbilirubinemia and explores possible mechanisms that could contribute to lowering circulating lipid parameters and further explain cardiovascular protection in Gilbert's syndrome.
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Affiliation(s)
- A C Bulmer
- Heart Foundation Research Centre, Griffith Health Institute, Griffith University, Gold Coast, Australia
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Heme oxygenase-1 attenuates epithelial-to-mesenchymal transition of human peritoneal mesothelial cells. Clin Exp Nephrol 2012; 17:284-93. [PMID: 23150184 DOI: 10.1007/s10157-012-0699-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Accepted: 09/24/2012] [Indexed: 01/01/2023]
Abstract
BACKGROUND Epithelial-to-mesenchymal transition (EMT) of peritoneal mesothelial cells has been regarded as an early mechanism of peritoneal fibrosis. A substantial and rapidly growing literature indicates that HO-1 provides the provenance for pathways that can interrupt virtually all major mechanisms of tissue injury. The effects of HO-1 expression on EMT, which plays a critical role in the development of peritoneal membrane (PM) fibrosis, are unknown and its roles in peritoneal fibrosis has not been studied, yet. METHODS A piece of human omentum obtained from consenting patients undergoing elective abdominal surgery was used for study. We treated the human peritoneal mesothelial cells (HPMCs) with high glucose solution and HO-1 inducer (hemin, 10 μmol/L). To further investigate the pure effect of HO-1 on EMT of mesothelium, gene transfer of recombinant Adenovirus-harboring human HO-1 (Adv-HO-1 gene) to HPMCs was done. RESULTS Exposure of HPMCs to HG solution resulted in an increase of the expression of mesenchymal markers such as α-smooth muscle actin (α-SMA) and was associated with a decrease in the expression of epithelial markers, E-cadherin. HO-1 protein expression was decreased in the same situation. Treatment of HPMCs with HO-1 inducer, hemin showed a dosage-dependent amelioration of HG induced changes in markers of EMT with increase of expression of HO-1. Human HO-1 gene transfection resulted in a significant increase in HO-1 expression and ameliorated HG-induced changes in expression of E-cadherin and α-SMA. CONCLUSION Taken together, our results suggest that HO-1 has a critical role in the modulation of peritoneal fibrosis, and, more important, the suppression of EMT. This study is the first to show the beneficial effect of HO-1 on reversing EMT in MC.
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Zhou C, Zhou J, Sheng F, Zhu H, Deng X, Xia B, Lin J. The heme oxygenase-1 inhibitor ZnPPIX induces non-canonical, Beclin 1-independent, autophagy through p38 MAPK pathway. Acta Biochim Biophys Sin (Shanghai) 2012; 44:815-22. [PMID: 22875631 DOI: 10.1093/abbs/gms064] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Zinc protoporphyrin IX (ZnPPIX), a heme oxygenase-1 enzyme inhibitor, has been reported to induce apoptosis and to have antitumor properties. Here, we report that ZnPPIX triggers autophagy and causes defective autophagy flux in HeLa cells. Autophagosome formation was independent of Beclin 1, indicating non-canonical autophagy activity in ZnPPIX-treated cells. Furthermore, western blot results indicated that p38 MAPK (mitogen-activated protein kinase) was phosphorylated in treated cells. Consistently, SB203580 (a p38 inhibitor) obviously inhibited the accumulation of autophagosomes. Our results indicated that p38 MAPK may be a key regulator for non-canonical Beclin1-independent autophagy.
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Affiliation(s)
- Cuihong Zhou
- Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education, School of Biological Sciences and Biomedical Engineering, Beihang University, Beijing, China
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Subcellular localization of iron and heme metabolism related proteins at early stages of erythrophagocytosis. PLoS One 2012; 7:e42199. [PMID: 22860081 PMCID: PMC3408460 DOI: 10.1371/journal.pone.0042199] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 07/02/2012] [Indexed: 12/26/2022] Open
Abstract
Background Senescent red blood cells (RBC) are recognized, phagocytosed and cleared by tissue macrophages. During this erythrophagocytosis (EP), RBC are engulfed and processed in special compartments called erythrophagosomes. We previously described that following EP, heme is rapidly degraded through the catabolic activity of heme oxygenase (HO). Extracted heme iron is then either exported or stored by macrophages. However, the cellular localization of the early steps of heme processing and iron extraction during EP remains to be clearly defined. Methodology/Principal Findings We took advantage of our previously described cellular model of EP, using bone marrow-derived macrophages (BMDM). The subcellular localization of both inducible and constitutive isoforms of HO (HO-1 and HO-2), of the divalent metal transporters (Nramp1, Nramp2/DMT1, Fpn), and of the recently identified heme transporter HRG-1, was followed by fluorescence and electron microscopy during the earliest steps of EP. We also looked at some ER [calnexin, glucose-6-phosphatase (G6Pase) activity] and lysosomes (Lamp1) markers during EP. In both quiescent and LPS-activated BMDM, Nramp1 and Lamp1 were shown to be strong markers of the erythrophagolysosomal membrane. HRG-1 was also recruited to the erythrophagosome. Furthermore, we observed calnexin labeling and G6Pase activity at the erythrophagosomal membrane, indicating the contribution of ER in this phagocytosis model. In contrast, Nramp2/DMT1, Fpn, HO-1 and HO-2 were not detected at the membrane of erythrophagosomes. Conclusions/Significance Our study highlights the subcellular localization of various heme- and iron-related proteins during early steps of EP, thereby suggesting a model for heme catabolism occurring outside the phagosome, with heme likely being transported into the cytosol through HRG1. The precise function of Nramp1 at the phagosomal membrane in this model remains to be determined.
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Zhao J, Tan S, Liu F, Zhang Y, Su M, Sun D. Heme oxygenase and ocular disease: a review of the literature. Curr Eye Res 2012; 37:955-60. [PMID: 22720721 DOI: 10.3109/02713683.2012.700753] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Heme oxygenase (HO) catabolizes heme into three products: carbon monoxide (CO), biliverdin/bilirubin and free iron. Two distinct isoforms of HO have been identified: an inducible isozyme HO-1 and a constitutively expressed isozyme HO-2, which participate in a variety of physiological and pathophysiological processes. A growing body of evidence indicates that HO activation plays a variety of roles in several ocular diseases, functioning protectively by reducing oxidative injury, attenuating the inflammatory response, and inhibiting cell apoptosis. This review focuses on the current understanding of the physiological significance of HO and its putative roles in the ocular disease. Possible therapeutic strategies involving HO in the treatment of ocular disease are discussed.
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Affiliation(s)
- Jun Zhao
- Department of ophthalmology, Linyi People's Hospital, Linyi City, Shandong Province, China.
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Tang Y, Gao C, Shi Y, Zhu L, Hu X, Wang D, Lv Y, Yang X, Liu L, Yao P. Quercetin attenuates ethanol-derived microsomal oxidative stress: Implication of haem oxygenase-1 induction. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Lee GH, Kim HR, Chae HJ. Bax inhibitor-1 regulates the expression of P450 2E1 through enhanced lysosome activity. Int J Biochem Cell Biol 2012; 44:600-11. [DOI: 10.1016/j.biocel.2011.12.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Revised: 12/20/2011] [Accepted: 12/22/2011] [Indexed: 10/14/2022]
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Zager RA, Johnson ACM, Becker K. Plasma and urinary heme oxygenase-1 in AKI. J Am Soc Nephrol 2012; 23:1048-57. [PMID: 22440905 DOI: 10.1681/asn.2011121147] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
AKI induces upregulation of heme oxygenase 1 (HO-1), which exerts cytoprotective effects and modulates the renal response to injury, suggesting that a biomarker of intrarenal HO-1 activity may be useful. Because HO-1 largely localizes to the endoplasmic reticulum and has no known secretory pathway, it is unclear whether plasma or urinary levels of HO-1 reflect intrarenal HO-1 expression. We measured plasma and urinary levels of HO-1 by ELISA during the induction and/or maintenance phases of four mouse models of AKI: ischemia/reperfusion, glycerol-induced rhabdomyolysis, cisplatin nephrotoxicity, and bilateral ureteral obstruction. In addition, we measured levels of HO-1 mRNA and protein in the renal cortex. Each AKI model increased renal HO-1 gene expression, which corresponded with release of HO-1 into plasma and urine by 4 hours. Over time, the magnitudes of plasma and urinary HO-1 paralleled renal cortical gene expression. AKI and the associated uremia did not seem to affect extrarenal HO-1 gene activity assessed in the liver, lung, and spleen. In iron-challenged, cultured proximal tubule cells, we observed a positive correlation between HO-1 mRNA level and HO-1 release. In humans, 10 patients with AKI demonstrated markedly higher levels of plasma and urine HO-1 levels than 10 critically ill patients without AKI or 20 patients with CKD or ESRD. In summary, these data suggest that plasma and urinary HO-1 levels may serve as biomarkers of AKI and intrarenal HO-1 gene activity.
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Affiliation(s)
- Richard A Zager
- Fred Hutchinson Cancer Research Center, 1100 Fairview Ave N., Seattle, WA 98109, USA.
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41
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Zheng M, Kim SK, Joe Y, Back SH, Cho HR, Kim HP, Ignarro LJ, Chung HT. Sensing endoplasmic reticulum stress by protein kinase RNA-like endoplasmic reticulum kinase promotes adaptive mitochondrial DNA biogenesis and cell survival via heme oxygenase-1/carbon monoxide activity. FASEB J 2012; 26:2558-68. [PMID: 22391129 DOI: 10.1096/fj.11-199604] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Endoplasmic reticulum (ER) stress activates the adaptive unfolded protein response, allowing cells to recover folding capacity in the organelle. However, the overwhelming response to severe damage results in apoptotic cell death. Because of the physical proximity between ER and mitochondria, a functional interrelationship between these two organelles, including mitochondrial ATP production and apoptosis, has been suggested. The adaptive response to ER stress includes the maintenance of cellular energetics, which eventually determines cell fate. We previously demonstrated that heme oxygenase-1 (HO-1) activity protects cells against ER stress in a protein kinase RNA-like endoplasmic reticulum kinase (PERK)-dependent pathway. Here, we provide evidence that PERK-mediated induction of HO-1 in murine macrophages, RAW264.7, relays ER stress to mitochondrial DNA (mtDNA) replication and function. ER stress induced by thapsigargin treatments (10-100 nM) resulted in a 2-fold increase in mtDNA contents compared with that in the untreated control. HO-1 activity on ER stress is proven to be critical for mitochondrial integrity because chemical inhibition (zinc protoporphyrin, 5-20 μM) and genetic depletion of HO-1 by small interference RNA transfection suppress the activation of transcription factors for mitochondrial biogenesis. Carbon monoxide (CO), an enzymatic by-product of HO-1 activity is responsible for the function of HO-1. Limited bioavailability of CO by hemoglobin treatment triggers cell death with a concomitant decline in ATP production. Approximately 78.1% of RAW264.7 cells were damaged in the presence of hemoglobin compared with the percentage of injured cells (26.9%) under ER stress alone. Mitochondrial generation of ATP levels significantly declined when CO availability was limited under prolonged ER stress. Taken together, these results suggest that the cellular HO-1/CO system conveys ER stress to cell survival signals from mitochondria via both the activation of transcriptional factors and functional integrity of mtDNA.
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Affiliation(s)
- Min Zheng
- Department of Surgery, Ulsan University Hospital and School of Medicine, University of Ulsan, Ulsan, Korea
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Peers C, Steele DS. Carbon monoxide: a vital signalling molecule and potent toxin in the myocardium. J Mol Cell Cardiol 2012; 52:359-65. [PMID: 21640728 DOI: 10.1016/j.yjmcc.2011.05.013] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 05/11/2011] [Accepted: 05/17/2011] [Indexed: 11/20/2022]
Abstract
Endogenous carbon monoxide (CO) is generated through the heme oxygenase-catalysed degradation of heme and is now established as an important, biologically active molecule capable of modulating a number of signalling pathways. Such pathways include those involving nitric oxide/guanylate cyclase, reactive oxygen species (ROS) and MAP kinases. In the heart, up-regulation of the inducible form of heme oxygenase (HO-1) following stresses such as ischemia/reperfusion provides cardioprotection, and much evidence indicates that CO accounts for many of these beneficial effects. One target of CO appears to be the L-type Ca(2+) channel; CO inhibits recombinant and native forms of this cardiac channel via mitochondria-derived ROS, which likely contributes to the protective effects of CO. In stark contrast, exposure to exogenous CO is toxic: chronic, low-level exposure can lead to myocardial injury and fibrosis, whereas acute exposure is associated with life-threatening arrhythmias. The molecular mechanisms accounting for such effects remain to be elucidated, but require future study before the potentially beneficial effects of CO therapy can be safely exploited. This article is part of a Special Issue entitled "Local Signaling in Myocytes".
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Affiliation(s)
- Chris Peers
- Faculties of Medicine and Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
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Imai M, Yuan B, Kikuchi H, Saito M, Ohyama K, Hirobe C, Oshima T, Hosoya T, Morita H, Toyoda H. Growth inhibition of a human colon carcinoma cell, COLO 201, by a natural product, <i>Vitex agnus-castus</i> fruits extract, <i>in vivo</i> and <i>in vivo</i>. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/abc.2012.21003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Heme Oxygenase-1: A Critical Link between Iron Metabolism, Erythropoiesis, and Development. Adv Hematol 2011; 2011:473709. [PMID: 22162689 PMCID: PMC3226344 DOI: 10.1155/2011/473709] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 09/13/2011] [Accepted: 09/15/2011] [Indexed: 11/17/2022] Open
Abstract
The first mature cells to arise in the developing mammalian embryo belong to the erythroid lineage. This highlights the immediacy of the need for red blood cells during embryogenesis and for survival. Linked with this pressure is the necessity of the embryo to obtain and transport iron, synthesize hemoglobin, and then dispose of the potentially toxic heme via the stress-induced protein heme oxygenase-1 (HO-1, encoded by Hmox1 in the mouse). Null mutation of Hmox1 results in significant embryonic mortality as well as anemia and defective iron recycling. Here, we discuss the interrelated nature of this critical enzyme with iron trafficking, erythroid cell function, and embryonic survival.
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Ma R, Gu Y, Groome LJ, Wang Y. ADAM17 regulates TNFα production by placental trophoblasts. Placenta 2011; 32:975-80. [PMID: 22018416 DOI: 10.1016/j.placenta.2011.09.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 09/22/2011] [Accepted: 09/26/2011] [Indexed: 10/16/2022]
Abstract
Increased trophoblast TNFα production is an important component of placental dysfunction in preeclampsia. However, the mechanism of increased TNFα production in the preeclamptic placenta is largely unknown. ADAM17 is a metallopeptidase that functions as a TNFα converting enzyme. In this study, we examined ADAM17 expression in placentas from normal and preeclamptic pregnancies and found increased ADAM17 expression in preeclamptic placentas compared to those from normal placentas, p < 0.05. Since hypoxia/oxidative stress is an underlying pathophysiology in the preeclamptic placenta, we further determined if hypoxia/oxidative stress could modulate ADAM17 expression and subsequently induce TNFα production in placental trophoblasts. Trophoblasts were isolated from normal term placentas and treated with cobalt (II) chloride (CoCl(2)), a hypoxia mimetic agent, at different concentrations. Our results showed that CoCl(2) induced a dose-dependent increase in TNFα production that is associated with enhanced ADAM17 expression. Trophoblast expressions of HO-1 (a sensor of cellular oxidative stress) and caspase-3 (an indicator of apoptosis) in response to CoCl(2) stimulation were also examined. We further found that metallopeptidase inhibitor GM6001 and ADAM17 siRNA could block CoCl(2) induced TNFα production, demonstrating the role of ADAM17 in TNFα production in placental trophoblasts. These results suggest that oxidative stress-induced increased ADAM17 expression could contribute to the increased TNFα production in preeclamptic placentas.
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Affiliation(s)
- R Ma
- Dept. of Gynecology, The Third Hospital of Harbin Medical University, Harbin, China
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