1
|
Feedback Interaction Between Apelin and Endoplasmic Reticulum Stress in the Rat Myocardium. J Cardiovasc Pharmacol 2023; 81:21-34. [PMID: 36084017 DOI: 10.1097/fjc.0000000000001369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 09/01/2022] [Indexed: 01/26/2023]
Abstract
ABSTRACT Apelin is an endogenous active peptide, playing a crucial role in regulating cardiovascular homeostasis. This study aimed to investigate the interaction between apelin and endoplasmic reticulum stress (ERS). Tunicamycin (Tm) and dithiothreitol (DTT) were used to induce ERS in the ex vivo cultured myocardium of rats. Myocardial injury was determined by the activities of lactate dehydrogenase and creatine kinase-MB in the culture medium. The protein levels of an ERS-associated molecule, apelin, and its receptor angiotensin domain type 1 receptor-associated proteins (APJ) in the myocardium were determined by western blot analysis. The level of apelin in the culture medium was determined by enzyme immunoassay. Administration of Tm and DTT triggered ERS activation and myocardial injury, and led to a decrease in protein levels of apelin and APJ, in a dose-dependent manner. Integrated stress response inhibitor, an inhibitor of eukaryotic initiation factor 2α phosphorylation that is commonly used to prevent activation of protein kinase R-like ER kinase cascades, blocked ERS-induced myocardial injury and reduction of apelin and APJ levels. The ameliorative effect of integrated stress response inhibitor was partially inhibited by [Ala]-apelin-13, an antagonist of APJ. Furthermore, apelin treatment inhibited activation of the 3 branches of ERS induced by Tm and DTT in a dose-dependent manner, thereby preventing Tm-induced or DTT-induced myocardial injury. The negative feedback regulation between ERS activation and apelin/APJ suppression might play a critical role in myocardial injury. Restoration of apelin/APJ signaling provides a potential target for the treatment and prevention of ERS-associated tissue injury and diseases.
Collapse
|
2
|
Ivanov MN, Stoyanov DS, Pavlov SP, Tonchev AB. Distribution, Function, and Expression of the Apelinergic System in the Healthy and Diseased Mammalian Brain. Genes (Basel) 2022; 13:2172. [PMID: 36421846 PMCID: PMC9690544 DOI: 10.3390/genes13112172] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/14/2022] [Accepted: 11/14/2022] [Indexed: 07/27/2023] Open
Abstract
Apelin, a peptide initially isolated from bovine stomach extract, is an endogenous ligand for the Apelin Receptor (APLNR). Subsequently, a second peptide, ELABELA, that can bind to the receptor has been identified. The Apelin receptor and its endogenous ligands are widely distributed in mammalian organs. A growing body of evidence suggests that this system participates in various signaling cascades that can regulate cell proliferation, blood pressure, fluid homeostasis, feeding behavior, and pituitary hormone release. Additional research has been done to elucidate the system's potential role in neurogenesis, the pathophysiology of Glioblastoma multiforme, and the protective effects of apelin peptides on some neurological and psychiatric disorders-ischemic stroke, epilepsy, Parkinson's, and Alzheimer's disease. This review discusses the current knowledge on the apelinergic system's involvement in brain physiology in health and disease.
Collapse
Affiliation(s)
- Martin N. Ivanov
- Department of Anatomy and Cell Biology, Medical University-Varna, 9000 Varna, Bulgaria
- Department of Stem Cell Biology, Research Institute, Medical University-Varna, 9000 Varna, Bulgaria
| | - Dimo S. Stoyanov
- Department of Anatomy and Cell Biology, Medical University-Varna, 9000 Varna, Bulgaria
| | - Stoyan P. Pavlov
- Department of Anatomy and Cell Biology, Medical University-Varna, 9000 Varna, Bulgaria
| | - Anton. B. Tonchev
- Department of Anatomy and Cell Biology, Medical University-Varna, 9000 Varna, Bulgaria
- Department of Stem Cell Biology, Research Institute, Medical University-Varna, 9000 Varna, Bulgaria
| |
Collapse
|
3
|
Kong Y, Jiang J, Huang Y, Li L, Liu X, Jin Z, Wei F, Liu X, Zhang S, Duan X, Zhang Y, Tong Q, Chen H. Endoplasmic reticulum stress in melanoma pathogenesis and resistance. Biomed Pharmacother 2022; 155:113741. [DOI: 10.1016/j.biopha.2022.113741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/19/2022] [Accepted: 09/21/2022] [Indexed: 11/02/2022] Open
|
4
|
Fuloria S, Subramaniyan V, Meenakshi DU, Sekar M, Chakravarthi S, Kumar DH, Kumari U, Vanteddu VG, Patel TD, Narra K, Sharma PK, Fuloria NK. Etiopathophysiological role of the renin–angiotensin–aldosterone system in age‐related muscular weakening: RAAS‐independent beneficial role of ACE2 in muscle weakness. J Biochem Mol Toxicol 2022; 36:e23030. [DOI: 10.1002/jbt.23030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 11/17/2021] [Accepted: 01/28/2022] [Indexed: 11/08/2022]
Affiliation(s)
| | - Vetriselvan Subramaniyan
- Faculty of Medicine, Bioscience and Nursing, Faculty of Medicine MAHSA University Jenjarom Selangor Malaysia
| | | | - Mahendran Sekar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Health Sciences, Royal College of Medicine Perak Universiti Kuala Lumpur Ipoh Perak Malaysia
| | - Srikumar Chakravarthi
- Faculty of Medicine, Bioscience and Nursing, Faculty of Medicine MAHSA University Jenjarom Selangor Malaysia
| | - Darnal H. Kumar
- Jeffrey Cheah School of Medicine & Health Sciences Monash University Johor Johor Bahru Malaysia
| | - Usha Kumari
- Faculty of Medicine AIMST University Kedah Malaysia
| | | | | | | | | | - Neeraj K. Fuloria
- Faculty of Pharmacy AIMST University Kedah Malaysia
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College and Hospital Saveetha University Chennai India
| |
Collapse
|
5
|
de Klerk DJ, de Keijzer MJ, Dias LM, Heemskerk J, de Haan LR, Kleijn TG, Franchi LP, Heger M. Strategies for Improving Photodynamic Therapy Through Pharmacological Modulation of the Immediate Early Stress Response. Methods Mol Biol 2022; 2451:405-480. [PMID: 35505025 DOI: 10.1007/978-1-0716-2099-1_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Photodynamic therapy (PDT) is a minimally to noninvasive treatment modality that has emerged as a promising alternative to conventional cancer treatments. PDT induces hyperoxidative stress and disrupts cellular homeostasis in photosensitized cancer cells, resulting in cell death and ultimately removal of the tumor. However, various survival pathways can be activated in sublethally afflicted cancer cells following PDT. The acute stress response is one of the known survival pathways in PDT, which is activated by reactive oxygen species and signals via ASK-1 (directly) or via TNFR (indirectly). The acute stress response can activate various other survival pathways that may entail antioxidant, pro-inflammatory, angiogenic, and proteotoxic stress responses that culminate in the cancer cell's ability to cope with redox stress and oxidative damage. This review provides an overview of the immediate early stress response in the context of PDT, mechanisms of activation by PDT, and molecular intervention strategies aimed at inhibiting survival signaling and improving PDT outcome.
Collapse
Affiliation(s)
- Daniel J de Klerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Mark J de Keijzer
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Lionel M Dias
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Faculdade de Ciências da Saúde (FCS-UBI), Universidade da Beira Interior, Covilhã, Portugal
| | - Jordi Heemskerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Lianne R de Haan
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Tony G Kleijn
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Leonardo P Franchi
- Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas (ICB) 2, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
- Faculty of Philosophy, Department of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group, Sciences, and Letters of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Michal Heger
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China.
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands.
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
| |
Collapse
|
6
|
Rather MA, Khan A, Alshahrani S, Rashid H, Qadri M, Rashid S, Alsaffar RM, Kamal MA, Rehman MU. Inflammation and Alzheimer's Disease: Mechanisms and Therapeutic Implications by Natural Products. Mediators Inflamm 2021; 2021:9982954. [PMID: 34381308 PMCID: PMC8352708 DOI: 10.1155/2021/9982954] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/24/2021] [Accepted: 07/10/2021] [Indexed: 02/08/2023] Open
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder with no clear causative event making the disease difficult to diagnose and treat. The pathological hallmarks of AD include amyloid plaques, neurofibrillary tangles, and widespread neuronal loss. Amyloid-beta has been extensively studied and targeted to develop an effective disease-modifying therapy, but the success rate in clinical practice is minimal. Recently, neuroinflammation has been focused on as the event in AD progression to be targeted for therapies. Various mechanistic pathways including cytokines and chemokines, complement system, oxidative stress, and cyclooxygenase pathways are linked to neuroinflammation in the AD brain. Many cells including microglia, astrocytes, and oligodendrocytes work together to protect the brain from injury. This review is focused to better understand the AD inflammatory and immunoregulatory processes to develop novel anti-inflammatory drugs to slow down the progression of AD.
Collapse
Affiliation(s)
- Mashoque Ahmad Rather
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar, Tamil Nadu 608002, India
| | - Andleeb Khan
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Saeed Alshahrani
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Hina Rashid
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Marwa Qadri
- Department of Pharmacology and Toxicology, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
| | - Summya Rashid
- Department of Pharmacology & Toxicology, College of Pharmacy Girls Section, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia
| | - Rana M. Alsaffar
- Department of Pharmacology & Toxicology, College of Pharmacy Girls Section, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia
| | - Mohammad Amjad Kamal
- King Fahd Medical Research Center, King Abdulaziz University, P. O. Box 80216, Jeddah 21589, Saudi Arabia
- West China School of Nursing/Institutes for Systems Genetics, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu 610041, Sichuan, China
- Enzymoics, 7 Peterlee Place, Hebersham, NSW 2770; Novel Global Community Educational Foundation, Australia
| | - Muneeb U. Rehman
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
7
|
Angelopoulou E, Paudel YN, Bougea A, Piperi C. Impact of the apelin/APJ axis in the pathogenesis of Parkinson's disease with therapeutic potential. J Neurosci Res 2021; 99:2117-2133. [PMID: 34115895 DOI: 10.1002/jnr.24895] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/07/2021] [Accepted: 05/12/2021] [Indexed: 12/18/2022]
Abstract
The pathogenesis of Parkinson's disease (PD) remains elusive. There is still no available disease-modifying strategy against PD, whose management is mainly symptomatic. A growing amount of preclinical evidence shows that a complex interplay between autophagy dysregulation, mitochondrial impairment, endoplasmic reticulum stress, oxidative stress, and excessive neuroinflammation underlies PD pathogenesis. Identifying key molecules linking these pathological cellular processes may substantially aid in our deeper understanding of PD pathophysiology and the development of novel effective therapeutic approaches. Emerging preclinical evidence indicates that apelin, an endogenous neuropeptide acting as a ligand of the orphan G protein-coupled receptor APJ, may play a key neuroprotective role in PD pathogenesis, via inhibition of apoptosis and dopaminergic neuronal loss, autophagy enhancement, antioxidant effects, endoplasmic reticulum stress suppression, as well as prevention of synaptic dysregulation in the striatum, excessive neuroinflammation, and glutamate-induced excitotoxicity. Underlying signaling pathways involve phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin, extracellular signal-regulated kinase 1/2, and inositol requiring kinase 1α/XBP1/C/EBP homologous protein. Herein, we discuss the role of apelin/APJ axis and associated molecular mechanisms on the pathogenesis of PD in vitro and in vivo and provide evidence for its challenging therapeutic potential.
Collapse
Affiliation(s)
- Efthalia Angelopoulou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,Department of Neurology, Eginition University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Yam Nath Paudel
- Neuropharmacology Research Laboratory, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Malaysia
| | - Anastasia Bougea
- Department of Neurology, Eginition University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Christina Piperi
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| |
Collapse
|
8
|
Akman M, Belisario DC, Salaroglio IC, Kopecka J, Donadelli M, De Smaele E, Riganti C. Hypoxia, endoplasmic reticulum stress and chemoresistance: dangerous liaisons. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:28. [PMID: 33423689 PMCID: PMC7798239 DOI: 10.1186/s13046-020-01824-3] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 12/28/2020] [Indexed: 02/07/2023]
Abstract
Solid tumors often grow in a micro-environment characterized by < 2% O2 tension. This condition, together with the aberrant activation of specific oncogenic patwhays, increases the amount and activity of the hypoxia-inducible factor-1α (HIF-1α), a transcription factor that controls up to 200 genes involved in neoangiogenesis, metabolic rewiring, invasion and drug resistance. Hypoxia also induces endoplasmic reticulum (ER) stress, a condition that triggers cell death, if cells are irreversibly damaged, or cell survival, if the stress is mild.Hypoxia and chronic ER stress both induce chemoresistance. In this review we discuss the multiple and interconnected circuitries that link hypoxic environment, chronic ER stress and chemoresistance. We suggest that hypoxia and ER stress train and select the cells more adapted to survive in unfavorable conditions, by activating pleiotropic mechanisms including apoptosis inhibition, metabolic rewiring, anti-oxidant defences, drugs efflux. This adaptative process unequivocally expands clones that acquire resistance to chemotherapy.We believe that pharmacological inhibitors of HIF-1α and modulators of ER stress, although characterized by low specificty and anti-cancer efficacy when used as single agents, may be repurposed as chemosensitizers against hypoxic and chemorefractory tumors in the next future.
Collapse
Affiliation(s)
- Muhlis Akman
- Department of Oncology, University of Torino, via Santena 5/bis, 10126, Torino, Italy
| | | | | | - Joanna Kopecka
- Department of Oncology, University of Torino, via Santena 5/bis, 10126, Torino, Italy
| | - Massimo Donadelli
- Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biochemistry, University of Verona, Verona, Italy
| | - Enrico De Smaele
- Department of Experimental Medicine, Sapienza University of Roma, Roma, Italy
| | - Chiara Riganti
- Department of Oncology, University of Torino, via Santena 5/bis, 10126, Torino, Italy.
| |
Collapse
|
9
|
Xia C, Zhang X, Cao T, Wang J, Li C, Yue L, Niu K, Shen Y, Ma G, Chen F. Hepatic Transcriptome Analysis Revealing the Molecular Pathogenesis of Type 2 Diabetes Mellitus in Zucker Diabetic Fatty Rats. Front Endocrinol (Lausanne) 2020; 11:565858. [PMID: 33329383 PMCID: PMC7732450 DOI: 10.3389/fendo.2020.565858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 10/22/2020] [Indexed: 01/22/2023] Open
Abstract
Around 9% of the adult population in the world (463 million) suffer from diabetes mellitus. Most of them (~90%) belong to type 2 diabetes mellitus (T2DM), which is a common chronic metabolic disorder, and the number of cases has been reported to increase each year. Zucker diabetic fatty (ZDF) rat provides a successful animal model to study the pathogenesis of T2DM. Although previous hepatic transcriptome studies revealed some novel genes associated with the occurrence and development of T2DM, there still lacks the comprehensive transcriptomic analysis for the liver tissues of ZDF rats. We performed comparative transcriptome analyses between the liver tissues of ZDF rats and healthy ZCL rats and also evaluated several clinical indices. We could identify 214 and 104 differentially expressed genes (DEGs) and lncRNAs in ZDF rats, respectively. Pathway and biofunction analyses showed a synergistic effect between mRNAs and lncRNAs. By comprehensively analyzing transcriptomic data and clinical indices, we detected some typical features of T2DM in ZDF rats, such as upregulated metabolism (significant increased lipid absorption/transport/utilization, gluconeogenesis, and protein hydrolysis), increased inflammation, liver injury and increased endoplasmic reticulum (ER) stress. In addition, of the 214 DEGs, 114 were known and 100 were putative T2DM-related genes, most of which have been associated with substance metabolism (particularly degradation), inflammation, liver injury and ER stress biofunctions. Our study provides an important reference and improves understanding of molecular pathogenesis of obesity-associated T2DM. Our data can also be used to identify potential diagnostic markers and therapeutic targets, which should strengthen the prevention and treatment of T2DM.
Collapse
Affiliation(s)
- Chengdong Xia
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiuli Zhang
- China National Center for Bioinformation, Beijing, China
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Tianshu Cao
- Department of Virology, State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Jiannong Wang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Cuidan Li
- China National Center for Bioinformation, Beijing, China
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Liya Yue
- China National Center for Bioinformation, Beijing, China
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Kaifeng Niu
- China National Center for Bioinformation, Beijing, China
- Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Yicheng Shen
- China National Center for Bioinformation, Beijing, China
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Guannan Ma
- China National Center for Bioinformation, Beijing, China
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Fei Chen
- China National Center for Bioinformation, Beijing, China
- CAS Key Laboratory of Genome Sciences & Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
10
|
Chanana N, Palmo T, Newman JH, Pasha MAQ. Vascular homeostasis at high-altitude: role of genetic variants and transcription factors. Pulm Circ 2020; 10:2045894020913475. [PMID: 33282179 PMCID: PMC7682230 DOI: 10.1177/2045894020913475] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/14/2020] [Indexed: 12/24/2022] Open
Abstract
High-altitude pulmonary edema occurs most frequently in non-acclimatized low landers on exposure to altitude ≥2500 m. High-altitude pulmonary edema is a complex condition that involves perturbation of signaling pathways in vasoconstrictors, vasodilators, anti-diuretics, and vascular growth factors. Genetic variations are instrumental in regulating these pathways and evidence is accumulating for a role of epigenetic modification in hypoxic responses. This review focuses on the crosstalk between high-altitude pulmonary edema-associated genetic variants and transcription factors, comparing high-altitude adapted and high-altitude pulmonary edema-afflicted subjects. This approach might ultimately yield biomarker information both to understand and to design therapies for high-altitude adaptation.
Collapse
Affiliation(s)
- Neha Chanana
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - Tsering Palmo
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, Delhi, India
| | - John H Newman
- Pulmonary Circulation Center, Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M A Qadar Pasha
- Genomics and Molecular Medicine, CSIR-Institute of Genomics and Integrative Biology, Delhi, India.,Indian Council of Medical Research, New Delhi, India
| |
Collapse
|
11
|
Pioglitazone protects blood vessels through inhibition of the apelin signaling pathway by promoting KLF4 expression in rat models of T2DM. Biosci Rep 2020; 39:221480. [PMID: 31829402 PMCID: PMC6928522 DOI: 10.1042/bsr20190317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 11/16/2019] [Accepted: 12/02/2019] [Indexed: 02/06/2023] Open
Abstract
Apelin, identified as the endogenous ligand of APJ, exerts various cardiovascular effects. However, the molecular mechanism underlying the regulation of apelin expression in vascular cells is poorly described. Pioglitazone (PIO) and Krüppel-like factor 4 (KLF4) exhibit specific biological functions on vascular physiology and pathophysiology by regulating differentiation- and proliferation-related genes. The present study aimed to investigate the roles of PIO and KLF4 in the transcriptional regulation of apelin in a high-fat diet/streptozotocin rat model of diabetes and in PIO-stimulated vascular smooth muscle cells (VSMCs). Immunohistochemistry, qRT-PCR, and Western blotting assays revealed that the aorta of the Type 2 diabetes mellitus (T2DM) rat models had a high expression of apelin, PIO could decrease the expression of apelin in the PIO-treated rats. In vitro, Western blotting assays and immunofluorescent staining results showed that the basal expression of apelin was decreased but that of KLF4 was increased when VSMCs were stimulated by PIO treatment. Luciferase and chromatin immunoprecipitation assay results suggested that KLF4 bound to the GKLF-binding site of the apelin promoter and negatively regulated the transcription activity of apelin in VSMCs under PIO stimulation. Furthermore, qRT-PCR and Western blotting assay results showed that the overexpression of KLF4 markedly decreased the basal expression of apelin, but the knockdown of KLF4 restored the PIO-induced expression of apelin. In conclusion, PIO inhibited the expression of apelin in T2DM rat models to prevent diabetic macroangiopathy, and negatively regulated the gene transcription of apelin by promoting transcription of KLF4 in the apelin promoter.
Collapse
|
12
|
Tian Y, Chen R, Jiang Y, Bai B, Yang T, Liu H. The Protective Effects and Mechanisms of Apelin/APJ System on Ischemic Stroke: A Promising Therapeutic Target. Front Neurol 2020; 11:75. [PMID: 32194492 PMCID: PMC7063119 DOI: 10.3389/fneur.2020.00075] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 01/22/2020] [Indexed: 12/14/2022] Open
Abstract
The orphan receptor APJ and its endogenous ligand apelin, which are expressed in the brain, are the major components of the apelin/APJ system. Growing evidence shows that the apelin/APJ system plays a vital role in the pathophysiology of cerebral ischemic injury. Targeting the apelin/APJ system may have protective effects on cerebral ischemic injury. In this review, we sum up the latest research progress relating to the actions and therapeutic potential of the apelin/APJ system in ischemic stroke. An in-depth knowledge of the pathophysiological effects of the apelin/APJ system and the underlying mechanisms will help to develop novel therapeutic interventions for ischemic stroke.
Collapse
Affiliation(s)
- Yanjun Tian
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
| | - Ruijiao Chen
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University, Jining, China
| | - Yunlu Jiang
- School of Mental Health, Jining Medical University, Jining, China.,Institute of Neurobiology, Jining Medical University, Jining, China
| | - Bo Bai
- Institute of Neurobiology, Jining Medical University, Jining, China
| | - Tongju Yang
- Department of Pharmacy, People's Hospital of Zoucheng City, Jining, China
| | - Haiqing Liu
- Department of Physiology, Shandong First Medical University (Shandong Academy of Medical Sciences), Taian, China
| |
Collapse
|
13
|
Kheiri G, Dolatshahi M, Rahmani F, Rezaei N. Role of p38/MAPKs in Alzheimer's disease: implications for amyloid beta toxicity targeted therapy. Rev Neurosci 2019; 30:9-30. [PMID: 29804103 DOI: 10.1515/revneuro-2018-0008] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Accepted: 03/22/2018] [Indexed: 01/06/2023]
Abstract
A myriad of environmental and genetic factors, as well as the physiologic process of aging, contribute to Alzheimer's disease (AD) pathology. Neuroinflammation is and has been a focus of interest, as a common gateway for initiation of many of the underlying pathologies of AD. Amyloid beta (Aβ) toxicity, increasing RAGE expression, tau hyperphosphorylation, induction of apoptosis, and deregulated autophagy are among other mechanisms, partly entangled and being explained by activation of mitogen-activated protein kinase (MAPK) and MAPK signaling. p38 MAPK is the most essential regulator of Aβ induced toxicity from this family. p38 induces NF-κB activation, glutamate excitotoxicity, and disruption of synaptic plasticity, which are other implications of all justifying the p38 MAPK as a potential target to break the vicious Aβ toxicity cycle. Until recently, many in vivo and in vitro studies have investigated the effects of p38 MAPK inhibitors in AD. The pyridinyl imidazole compounds SB202190 and SB203580 have shown promising anti-apoptotic results in vivo. MW108 inhibits activation of p38 and is able to postpone cognitive decline in animal models. The PD169316, with anti-inflammatory, anti-oxidative, and anti-apoptotic features, has improved spatial memory in vivo. Natural compounds from Camellia sinensis (green tea), polyphenols from olive oil, pinocembrin from propolis, and the puerarine extract isoflavones, have shown strong anti-apoptotic features, mediated by p38 MAPK inhibition. Use of these drug targets is limited due to central nervous system side effects or cross-reactivity with other kinases, predicting the low efficacy of these drugs in clinical trials.
Collapse
Affiliation(s)
- Ghazaleh Kheiri
- Student's Scientific Research Center (SSRC), Tehran University of Medical Sciences, 1416753955 Tehran, Iran.,NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), 19166 Tehran, Iran
| | - Mahsa Dolatshahi
- Student's Scientific Research Center (SSRC), Tehran University of Medical Sciences, 1416753955 Tehran, Iran.,NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), 19166 Tehran, Iran
| | - Farzaneh Rahmani
- Student's Scientific Research Center (SSRC), Tehran University of Medical Sciences, 1416753955 Tehran, Iran.,NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), 19166 Tehran, Iran
| | - Nima Rezaei
- NeuroImaging Network (NIN), Universal Scientific Education and Research Network (USERN), 19166 Tehran, Iran.,Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Dr. Qarib St, Keshavarz Blvd, Tehran 14194, Iran
| |
Collapse
|
14
|
Endoplasmic reticulum stress regulates mechanical stress-induced ossification of posterior longitudinal ligament. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2019; 28:2249-2256. [PMID: 31325051 DOI: 10.1007/s00586-019-06074-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 07/02/2019] [Accepted: 07/13/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE The pathogenesis of ossification of posterior longitudinal ligament (OPLL) is not completely clear. Previous study has confirmed a single-pass type I endoplasmic reticulum (ER) membrane protein kinase (PERK), which is a major transducer of the ER stress, participates in the process of OPLL in vitro. This study aimed to demonstrate the role of ER stress in mechanical stress (MS)-induced OPLL. METHODS The posterior longitudinal ligaments were collected intraoperatively. The expression of ER stress markers in ligament tissue samples was compared between OPLL and non-OPLL patients in vivo. Ligament fibroblasts were isolated and cultured. Loaded by MS, the expression of ER stress markers in fibroblasts deriving from non-ossified areas of the ligament tissues from OPLL patients was detected. The influence of inhibition of ER stress on MS-induced OPLL and activation of mitogen-activated protein kinase (MAPK) pathways by MS was also investigated. RESULTS We confirmed the ER stress markers were highly expressed in non-ossified areas of the ligament tissues from OPLL patients but could barely be detected in the ligaments from non-OPLL patients in vivo. We also found ER stress could be activated by MS during the process of OPLL in vitro. Moreover, inhibition of ER stress could hinder MS-induced OPLL and activation of MAPK signaling pathways by MS in vitro. CONCLUSION Activated ER stress was observed in OPLL patients both in vitro and in vivo. Mechanical stress could activate ER stress response in posterior longitudinal ligament fibroblasts and further promote OPLL in vitro. In this process, ER stress might work through the MAPK signaling pathways. These slides can be retrieved under Electronic Supplementary Material.
Collapse
|
15
|
Alpha-lipoic acid attenuates p-cresyl sulfate-induced renal tubular injury through suppression of apoptosis and autophagy in human proximal tubular epithelial cells. Biomed Pharmacother 2019; 112:108679. [PMID: 30798133 DOI: 10.1016/j.biopha.2019.108679] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/08/2019] [Accepted: 02/09/2019] [Indexed: 01/09/2023] Open
Abstract
The p-cresyl sulfate accumulates in kidney disease and may be involved in renal injury. α-Lipoic acid (α-LA) acts as an antioxidant in cell injury. We investigated the effects of α-LA treatment on p-cresyl sulfate-induced renal tubular injury. p-Cresyl sulfate induced cell death, and increased Bax/Bcl-2, cleaved caspase-3, Beclin-1, and LC3BII/LC3BI in human renal proximal tubular epithelial (HK-2) cells, which was counteracted by α-LA treatment. p-Cresyl sulfate-induced apoptosis was reduced by autophagy inhibitor 3-methyladenine, and p-cresyl sulfate induced autophagy was reduced by pan-caspase inhibitor Z-VAD-FMK. Moreover, p-cresyl sulfate treatment increased the expression of ER stress proteins and decreased the expression of baculoviral IAP repeat-containing proteins 6; these effects were prevented by α-LA treatment. Apoptosis and autophagy were associated with the phosphorylation of mitogen-activated protein kinase and nuclear translocation of the nuclear factor-κB p65 subunit. Pretreatment inhibitors of p38 and JNK, and knockdown of ATF4 gene reduced apoptosis- and autophagy-related protein expressions in p-cresyl sulfate treated HK-2 cells. These results demonstrate that α-lipoic acid attenuated p-cresyl sulfate-induced cell death by suppression of apoptosis and autophagy via regulation of ER stress in HK-2 cells.
Collapse
|
16
|
Sabry MM, Ramadan NM, Al Dreny BA, Rashed LA, Abo El Enein A. Protective effect of apelin preconditioning in a rat model of hepatic ischemia reperfusion injury; possible interaction between the apelin/APJ system, Ang II/AT1R system and eNOS. United European Gastroenterol J 2019; 7:689-698. [PMID: 31210947 DOI: 10.1177/2050640619826847] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 12/18/2018] [Indexed: 12/22/2022] Open
Abstract
Introduction Hepatic ischemic reperfusion injury occurs in multiple clinical settings. Novel potential protective agents are still needed to attenuate this injury. Apelin preconditioning protects against ischemic reperfusion injury in different organs. However, the protective mechanism of apelin on hepatic ischemic reperfusion injury is not yet clear. Aim Evaluate the effect of apelin-13 preconditioning on hepatic ischemic reperfusion injury and clarify possible interactions between apelinergic, renin-angiotensin systems and endothelial nitric oxide synthase. Methods In total, 60 rats were assigned to four groups: control sham-operated, ischemic reperfusion, apelin-treated ischemic reperfusion and apelin + N-nitro-L-arginine methyl ester-treated ischemic reperfusion. Apelin 2 µg/kg/day and N-nitro-L-arginine methyl ester 10 mg/kg/day were injected intraperitoneally daily for 3 days and 2 weeks respectively before hepatic ischemic reperfusion. Serum aminotransferase, aspartate aminotransferase, hepatic malondialdehyde, apelin, gene expression of caspase-3, endothelial nitric oxide synthase and angiotensin type 1 receptor and liver histopathology were compared between groups. Results Apelin significantly reduced serum aminotransferase, aspartate aminotransferase, hepatic malondialdehyde, caspase-3 and angiotensin type 1 receptor expression, whereas hepatic apelin and endothelial nitric oxide synthase expression were significantly increased with improved hepatic histopathology. N-nitro-L-arginine methyl ester co-administration partially reversed this hepatoprotective effect. Conclusion Apelin-13 reduced hepatic ischemic reperfusion injury. This protection could be related to the suppression of hepatic angiotensin type 1 receptor expression and elevation of hepatic apelin level and endothelial nitric oxide synthase expression, which counteracts the pathologic effects of Ang II/angiotensin type 1 receptor. An interaction exists between apelinergic, renin-angiotensin systems and endothelial nitric oxide synthase in hepatic ischemic reperfusion pathophysiology.
Collapse
Affiliation(s)
- Maha M Sabry
- Faculty of Medicine, Cairo University, Cairo, Egypt
| | | | | | | | | |
Collapse
|
17
|
Abstract
Apelin and apela (ELABELA/ELA/Toddler) are two peptide ligands for a class A G-protein-coupled receptor named the apelin receptor (AR/APJ/APLNR). Ligand-AR interactions have been implicated in regulation of the adipoinsular axis, cardiovascular system, and central nervous system alongside pathological processes. Each ligand may be processed into a variety of bioactive isoforms endogenously, with apelin ranging from 13 to 55 amino acids and apela from 11 to 32, typically being cleaved C-terminal to dibasic proprotein convertase cleavage sites. The C-terminal region of the respective precursor protein is retained and is responsible for receptor binding and subsequent activation. Interestingly, both apelin and apela exhibit isoform-dependent variability in potency and efficacy under various physiological and pathological conditions, but most studies focus on a single isoform. Biophysical behavior and structural properties of apelin and apela isoforms show strong correlations with functional studies, with key motifs now well determined for apelin. Unlike its ligands, the AR has been relatively difficult to characterize by biophysical techniques, with most characterization to date being focused on effects of mutagenesis. This situation may improve following a recently reported AR crystal structure, but there are still barriers to overcome in terms of comprehensive biophysical study. In this review, we summarize the three components of the apelinergic system in terms of structure-function correlation, with a particular focus on isoform-dependent properties, underlining the potential for regulation of the system through multiple endogenous ligands and isoforms, isoform-dependent pharmacological properties, and biological membrane-mediated receptor interaction. © 2018 American Physiological Society. Compr Physiol 8:407-450, 2018.
Collapse
Affiliation(s)
- Kyungsoo Shin
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Calem Kenward
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jan K Rainey
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, Canada
| |
Collapse
|
18
|
Apelin protects against liver X receptor-mediated steatosis through AMPK and PPARα in human and mouse hepatocytes. Cell Signal 2017; 39:84-94. [DOI: 10.1016/j.cellsig.2017.08.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/04/2017] [Accepted: 08/14/2017] [Indexed: 12/19/2022]
|
19
|
Cardiovascular homeostasis dependence on MICU2, a regulatory subunit of the mitochondrial calcium uniporter. Proc Natl Acad Sci U S A 2017; 114:E9096-E9104. [PMID: 29073106 PMCID: PMC5664535 DOI: 10.1073/pnas.1711303114] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Hypertension increases the risk for development of abdominal aortic aneurysms, a silent pathology that is prone to rupture and cause sudden cardiac death. Male gender, smoking, and hypertension appear to increase risk for development of abdominal aortic aneurysms by provoking oxidative stress responses in cardiovascular tissues. Here we uncovered unexpected linkages between the calcium-sensing regulatory subunit MICU2 of the mitochondrial calcium uniporter and stress responses. We show that naive Micu2−/− mice had abnormalities of cardiac relaxation but, with modest blood pressure elevation, developed abdominal aortic aneurysms with spontaneous rupture. These findings implicate mitochondrial calcium homeostasis as a critical pathway involved in protecting cardiovascular tissues from oxidative stress. Comparative analyses of transcriptional profiles from humans and mice with cardiovascular pathologies revealed consistently elevated expression of MICU2, a regulatory subunit of the mitochondrial calcium uniporter complex. To determine if MICU2 expression was cardioprotective, we produced and characterized Micu2−/− mice. Mutant mice had left atrial enlargement and Micu2−/− cardiomyocytes had delayed sarcomere relaxation and cytosolic calcium reuptake kinetics, indicating diastolic dysfunction. RNA sequencing (RNA-seq) of Micu2−/− ventricular tissues revealed markedly reduced transcripts encoding the apelin receptor (Micu2−/− vs. wild type, P = 7.8 × 10−40), which suppresses angiotensin II receptor signaling via allosteric transinhibition. We found that Micu2−/− and wild-type mice had comparable basal blood pressures and elevated responses to angiotensin II infusion, but that Micu2−/− mice exhibited systolic dysfunction and 30% lethality from abdominal aortic rupture. Aneurysms and rupture did not occur with norepinephrine-induced hypertension. Aortic tissue from Micu2−/− mice had increased expression of extracellular matrix remodeling genes, while single-cell RNA-seq analyses showed increased expression of genes related to reactive oxygen species, inflammation, and proliferation in fibroblast and smooth muscle cells. We concluded that Micu2−/− mice recapitulate features of diastolic heart disease and define previously unappreciated roles for Micu2 in regulating angiotensin II-mediated hypertensive responses that are critical in protecting the abdominal aorta from injury.
Collapse
|
20
|
Sun H, Jiang M, Fu X, Cai Q, Zhang J, Yin Y, Guo J, Yu L, Jiang Y, Liu Y, Feng L, Nie Z, Fang J, Jin L. Mesencephalic astrocyte-derived neurotrophic factor reduces cell apoptosis via upregulating HSP70 in SHSY-5Y cells. Transl Neurodegener 2017; 6:12. [PMID: 28536652 PMCID: PMC5439129 DOI: 10.1186/s40035-017-0082-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 05/03/2017] [Indexed: 12/17/2022] Open
Abstract
Background Mesencephalic astrocyte-derived neurotrophic factor (MANF) is a new candidate growth factor for dopaminergic neurons against endoplasmic reticulum stress (ER stress). HSP70 family, a chaperon like heat shock protein family, was proved to be involved in the MANF induced survival pathway in 6-OHDA treated SHSY-5Y cells. However, the ER stress relative transcriptome, in MANF signaling cascades is still investigated. The involvement of HSP70, a 70kd member of HSP70 family, need further to be verified. Methods The cell apoptosis was assayed by MTT, TUNEL staining and western blot of cleaved Caspase-3. The differentially expressed genes in SHSY-5Y cells under different conditions (control, 6-OHDA, 6-OHDA + MANF) were investigated by RNA-seq. Expression of HSP70 was further confirmed by real-time PCR. RNAi knockdown for HSP70 was performed to investigate the role of HSP70 in the MANF signaling pathway. Results MANF inhibits 6-OHDA-induced apoptosis in SHSY-5Y cells. Six ER stress relative genes (HSP70, GRP78, xbp-1, ATF-4, ATF-6, MAPK) were found enriched in 6-OHDA + MANF treatment group. HSP70 was the most significantly up-regulated gene under 6-OHDA + MANF treatment in SHSY-5Y cells. RNAi knockdown for HSP70 inhibits the protective effects of MANF against 6-OHDA toxicity in SHSY-5Y cells. Conclusion MANF exerts a protective role against 6-OHDA induced apoptosis in SHSY-5Y cells via up-regulating some ER stress genes, including HSP70 family members. The HSP70 expression level plays a key role in MANF-mediated survival pathway.
Collapse
Affiliation(s)
- Hui Sun
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Ming Jiang
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092 People's Republic of China.,Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Xing Fu
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Qiong Cai
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Jingxing Zhang
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Yanxin Yin
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Jia Guo
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Lihua Yu
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Yun Jiang
- Biomedical Research Center, Tongji University Suzhou Institute, Building 2, 198 Jinfeng Road, Wuzhong District, Suzhou, Jiangsu 215101 China
| | - Yigang Liu
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Liang Feng
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Zhiyu Nie
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| | - Jianmin Fang
- School of Life Science and Technology, Tongji University, 1239 Siping Road, Shanghai, 200092 People's Republic of China
| | - Lingjing Jin
- Department of Neurology, Shanghai Tongji Hospital, Tongji University School of Medicine, 389 Xincun Road, Shanghai, 200065 People's Republic of China
| |
Collapse
|
21
|
Lv X, Kong J, Chen WD, Wang YD. The Role of the Apelin/APJ System in the Regulation of Liver Disease. Front Pharmacol 2017; 8:221. [PMID: 28484393 PMCID: PMC5401884 DOI: 10.3389/fphar.2017.00221] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/10/2017] [Indexed: 12/29/2022] Open
Abstract
Apelin is an endogenous peptide that is a ligand for the APJ receptor (angiotensin II receptor like-1, AT-1). The apelin/APJ system is distributed in diverse periphery organ tissues. It has been shown that the apelin/APJ system plays various roles in physiology and pathophysiology of many organs. It regulates cardiovascular development or cardiac disease, glycometabolism and fat metabolism as well as metabolic disease. The apelin/APJ system participates in various cell activities such as proliferation, migration, apoptosis or inflammation. However, apelin/APJ function in the liver is still under investigation. In the liver, the apelin-APJ system could play an inhibitory role in liver regeneration and promote Fas-induced apoptosis. It may participate in the formation of hepatic fibrosis or cirrhosis, and even cancer. In this review, we summarize the role of the apelin/APJ system in liver disease.
Collapse
Affiliation(s)
- Xinrui Lv
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan UniversityKaifeng, China
| | - Jing Kong
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan UniversityKaifeng, China
| | - Wei-Dong Chen
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan UniversityKaifeng, China.,Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical UniversityHohhot, China
| | - Yan-Dong Wang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical TechnologyBeijing, China
| |
Collapse
|
22
|
Wu Y, Wang X, Zhou X, Cheng B, Li G, Bai B. Temporal Expression of Apelin/Apelin Receptor in Ischemic Stroke and its Therapeutic Potential. Front Mol Neurosci 2017; 10:1. [PMID: 28167898 PMCID: PMC5253351 DOI: 10.3389/fnmol.2017.00001] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/04/2017] [Indexed: 02/03/2023] Open
Abstract
Stroke is one of the leading causes of death and disability worldwide, and ischemic stroke accounts for approximately 87% of cases. Improving post-stroke recovery is a major challenge in stroke treatment. Accumulated evidence indicates that the apelinergic system, consisting of apelin and apelin receptor (APLNR), is temporally dysregulated in ischemic stroke. Moreover, the apelinergic system plays a pivotal role in post-stroke recovery by inhibiting neuronal apoptosis and facilitating angiogenesis through various molecular pathways. In this review article, we summarize the temporal expression of apelin and APLNR in ischemic stroke and the mechanisms of their dysregulation. In addition, the protective role of the apelinergic system in ischemic stroke and the underlying mechanisms of its protective effects are discussed. Furthermore, critical issues in activating the apelinergic system as a potential therapy will also be discussed. The aim of this review article is to shed light on exploiting the activation of the apelinergic system to treat ischemic stroke.
Collapse
Affiliation(s)
- Yili Wu
- Department of Psychiatry, Jining Medical UniversityJining, China; Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical UniversityJining, China; Shandong Key Laboratory of Behavioral Medicine, Jining Medical UniversityJining, China
| | - Xin Wang
- Department of Psychiatry, Jining Medical UniversityJining, China; Shandong Key Laboratory of Behavioral Medicine, Jining Medical UniversityJining, China
| | - Xuan Zhou
- Department of Psychiatry, Jining Medical UniversityJining, China; Shandong Key Laboratory of Behavioral Medicine, Jining Medical UniversityJining, China
| | - Baohua Cheng
- Neurobiology Institute, Jining Medical University Jining, China
| | - Gongying Li
- Department of Psychiatry, Jining Medical UniversityJining, China; Shandong Key Laboratory of Behavioral Medicine, Jining Medical UniversityJining, China
| | - Bo Bai
- Collaborative Innovation Center for Birth Defect Research and Transformation of Shandong Province, Jining Medical University Jining, China
| |
Collapse
|
23
|
Luo K, Long H, Xu B, Luo Y. Apelin attenuates postburn sepsis via a phosphatidylinositol 3-kinase/protein kinase B dependent mechanism: A randomized animal study. Int J Surg 2015; 21:22-7. [PMID: 26163884 DOI: 10.1016/j.ijsu.2015.06.072] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/15/2015] [Accepted: 06/18/2015] [Indexed: 02/07/2023]
Abstract
INTRODUCTION This study aims to investigate whether apelin would regulate inflammatory response and promote survival in an experimental burn sepsis model through a phosphatidylinositol 3-kinase/protein kinase B dependent pathway. METHODS Male BALB/c mice were divided into the following groups: sham, burn, burn sepsis, burn sepsis treated with apelin, burn sepsis treated with apelin plus LY294002, and burn sepsis treated with LY294002 alone. Apelin level and inflammatory cytokines in serum were detected by enzyme-linked immuno sorbent assay. Apelin/APJ (apelin receptor, gene symbol APLNR) mRNA expression in spleen and adhesion molecules levels in lung was detected by real-time polymerase chain reaction. Neutrophil infiltration in lung was determined by myeloperoxidase assay. Phosphorylation of protein kinase B in lung was determined by western blot. Mortality rate was monitored. RESULTS Burn sepsis induced decreased apelin/APJ mRNA expression in spleen and reduced apelin level in plasma, which were both restored by exogenous apelin treatment. Burn sepsis treated with apelin resulted in decreased interleukin-6, tumor-necrosis factor-alpha, interleukin -1β and monocyte chemotactic protein-1 levels in plasma. Mice with apelin treatment also showed decreased neutrophil infiltration and adhesion molecules expression, accompanied by a remarkable increased protein kinase B phosphorylation in lung tissue. The mortality rate in apelin treated animals was also significantly reduced. Importantly, the above effects of apelin were abolished by LY294002 treatment. CONCLUSION Apelin regulates inflammatory response, diminishes inflammatory remote organ damage and improves survival in an experimental model of burn sepsis, which is at least partly mediated by a phosphatidylinositol 3-kinase/protein kinase B dependent pathway.
Collapse
Affiliation(s)
- Keqin Luo
- Department of Emergency, SunYat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| | - Huibao Long
- Department of Emergency, SunYat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| | - Bincan Xu
- Department of Emergency, SunYat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| | - Yanling Luo
- Department of Emergency, SunYat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| |
Collapse
|
24
|
Peng X, Li F, Wang P, Jia S, Sun L, Huo H. Apelin-13 induces MCF-7 cell proliferation and invasion via phosphorylation of ERK1/2. Int J Mol Med 2015; 36:733-8. [PMID: 26135903 DOI: 10.3892/ijmm.2015.2265] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 06/22/2015] [Indexed: 11/05/2022] Open
Abstract
Apelin-13 is extensively expressed in various tissues, particularly breast tissue. Apelin‑13 has been shown to promote tumor proliferation in various types of cancer, including hepatocellular, lung and ovarian cancer. However, the effect and molecular mechanism of apelin‑13 in breast cancer cells remains unclear. The present study investigated the effect of apelin‑13 on MCF‑7. Therefore, cell proliferation was determined by MTT and flow cytometry analysis. The results revealed that apelin‑13 markedly increased cell proliferation. Transwell assays demonstrated that apelin‑13 increased MCF‑7 cell invasion. Apelin‑13 also markedly increased the expression of cyclin D1, extracellular matrix metalloproteinase‑1 and amplified in breast cancer 1 (AIB1) in a dose‑dependent manner by polymerase chain reaction assays. To study the molecular mechanism, cell proliferation, invasion and cyclin D1 were inhibited by pre‑treatment with 10 µM of PD98059 (ERK(1/2) inhibitor). Western blotting results suggested that apelin‑13 significantly enhances the expression of p‑ERK(1/2) in a concentration‑dependent manner. In conclusion, the results suggest that apelin‑13 promoted MCF-7 cell proliferation and invasion via the ERK1/2/AIB1 signaling pathway.
Collapse
Affiliation(s)
- Xuewei Peng
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P.R. China
| | - Fengyu Li
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P.R. China
| | - Ping Wang
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P.R. China
| | - Shengnan Jia
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P.R. China
| | - Lili Sun
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P.R. China
| | - Hongliang Huo
- School of Life Sciences, Northeast Normal University, Changchun, Jilin 130024, P.R. China
| |
Collapse
|
25
|
Chi Y, Chai J, Xu C, Luo H, Zhang Q. Apelin inhibits the activation of the nucleotide-binding domain and the leucine-rich, repeat-containing family, pyrin-containing 3 (NLRP3) inflammasome and ameliorates insulin resistance in severely burned rats. Surgery 2015; 157:1142-52. [DOI: 10.1016/j.surg.2015.01.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 01/13/2015] [Accepted: 01/20/2015] [Indexed: 02/07/2023]
|
26
|
Zhong J, Kang J, Wang X, Jiang W, Liao H, Yuan J. TAT-OSBP-1-MKK6(E), a novel TAT-fusion protein with high selectivity for human ovarian cancer, exhibits anti-tumor activity. Med Oncol 2015; 32:118. [PMID: 25782870 DOI: 10.1007/s12032-015-0495-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 01/23/2015] [Indexed: 01/12/2023]
Abstract
To improve the selectivity of TAT-fusion proteins for targeted cancer therapy, we developed a novel TAT-based target-specific fusion protein, TAT-OSBP-1-MKK6(E), and evaluated its selectivity and anti-tumor activity in vitro and in vivo. The fusion protein containing TAT-OSBP-1-MKK6(E) has three functional domains: (1) the protein transduction domain of TAT, (2) the human ovarian cancer HO8910 cell-specific binding peptide (OSBP-1) and (3) the potential anti-tumor effector domain of MKK6(E). The transduction efficiency, selectivity, cytotoxicity and apoptotic effect of TAT-OSBP-1-MKK6(E) were examined using immunofluorescence, CCK8 assay and flow cytometry. The in vivo anti-tumor efficacy and target specificity of the fusion protein were evaluated using a nude mouse model with subcutaneous xenografts of human ovarian cancer HO8910 cells. Tumor-bearing mice were divided into three treatment groups that received tail vein injections of TAT-OSBP-1-MKK6(E), TAT-OSBP-1 or normal saline. Tumor growth inhibition was determined by tumor volume, weight and morphology. The distribution and apoptotic effect of TAT-OSBP-1-MKK6(E) were assessed by immunohistochemical staining and TUNEL assays. TAT-OSBP-1-MKK6(E) can be selectively internalized into human ovarian cancer HO8910 cells, rather than normal ovarian OSE cells. In vivo, the fusion protein was mainly expressed in the tumor xenograft, but not in ovary or liver tissues. As a result, TAT-OSBP-1-MKK6(E) significantly induced growth inhibition and apoptosis of tumor cells in vitro and in vivo, with limited effects in normal cells and tissues. TAT-OSBP-1-MKK6(E) treatment can selectively target HO8910 cells in vitro and in vivo, leading to growth inhibition and apoptosis of tumor cells. As such, TAT-OSBP-1-MKK6(E) may be a potential approach for ovarian cancer target therapy.
Collapse
Affiliation(s)
- Jiali Zhong
- Department of Obstetrics and Gynecology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, 510180, People's Republic of China
| | | | | | | | | | | |
Collapse
|