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Abstract
Fatty acid-binding proteins (FABPs) are small lipid-binding proteins abundantly expressed in tissues that are highly active in fatty acid (FA) metabolism. Ten mammalian FABPs have been identified, with tissue-specific expression patterns and highly conserved tertiary structures. FABPs were initially studied as intracellular FA transport proteins. Further investigation has demonstrated their participation in lipid metabolism, both directly and via regulation of gene expression, and in signaling within their cells of expression. There is also evidence that they may be secreted and have functional impact via the circulation. It has also been shown that the FABP ligand binding repertoire extends beyond long-chain FAs and that their functional properties also involve participation in systemic metabolism. This article reviews the present understanding of FABP functions and their apparent roles in disease, particularly metabolic and inflammation-related disorders and cancers.
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Affiliation(s)
- Judith Storch
- Department of Nutritional Sciences and Rutgers Center for Lipid Research, Rutgers University, New Brunswick, New Jersey, United States;
| | - Betina Corsico
- Instituto de Investigaciones Bioquímicas de La Plata, CONICET-UNLP, Facultad de Ciencias Médicas, La Plata, Argentina;
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Rodrigues J, Wang YF, Singh A, Hendriks M, Dharmalingam G, Cohen-Solal M, Kusumbe A, Ramasamy SK. Oestrogen enforces the integrity of blood vessels in the bone during pregnancy and menopause. NATURE CARDIOVASCULAR RESEARCH 2022; 1:918-932. [PMID: 36531334 PMCID: PMC7613952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
The mammalian skeletal system shows sex differences in structure, functions, ageing and disease incidences. The role of blood vessels in physiological, regenerative and pathological bone functions indicates the requisite to understanding their sex specificity. Here, we find oestrogen regulates blood vessel physiology during pregnancy and menopause through oestrogen receptor alpha (ERα) and G-protein coupled oestrogen receptor-1 (Gper1) but not ERβ-dependent signalling in mice. Oestrogen regulates BECs' lipid use and promotes lipolysis of adipocytes and FA uptake from the microenvironment. Low oestrogen conditions skew endothelial FA metabolism to accumulate lipid peroxides (LPO), leading to vascular ageing. High ferrous ion levels in female BECs intensify LPO accumulation and accelerate the ageing process. Importantly, inhibiting LPO generation using liproxstatin-1 in aged mice significantly improved bone heath. Thus, our findings illustrate oestrogen's effects on BECs and suggest LPO targeting could be an efficient strategy to manage blood and bone health in females.
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Affiliation(s)
- Julia Rodrigues
- Institute of Clinical Sciences, Imperial College London, London W12 0NN, UK
- MRC London Institute of Medical Sciences, Imperial College London, London W12 0NN, UK
| | - Yi-Fang Wang
- Bioinformatics and computing Facility, MRC London Institute of Medical Sciences, Imperial College London, UK
| | - Amit Singh
- Tissue and Tumor Microenvironments Group, MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
- Heidelberg University Biochemistry Center, University of Heidelberg, Heidelberg D-69120, Germany
| | - Michelle Hendriks
- Institute of Clinical Sciences, Imperial College London, London W12 0NN, UK
- MRC London Institute of Medical Sciences, Imperial College London, London W12 0NN, UK
| | - Gopuraja Dharmalingam
- Bioinformatics and computing Facility, MRC London Institute of Medical Sciences, Imperial College London, UK
| | - Martine Cohen-Solal
- Bioscar Inserm U1132 and Université de Paris, Hospital Lariboisiere, Paris, France
| | - Anjali Kusumbe
- Tissue and Tumor Microenvironments Group, MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Saravana K. Ramasamy
- Institute of Clinical Sciences, Imperial College London, London W12 0NN, UK
- MRC London Institute of Medical Sciences, Imperial College London, London W12 0NN, UK
- Author for correspondence: Saravana K. Ramasamy, MRC London Institute of Medical Sciences, Imperial College London, Du Cane Road, London W12 0NN, UK, Phone: +44 20 838 31182; Fax: +44 20 838 38303
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Khine HEE, Sungthong R, Sritularak B, Prompetchara E, Chaotham C. Untapped Pharmaceutical Potential of 4,5,4'-Trihydroxy-3,3'-dimethoxybibenzyl for Regulating Obesity: A Cell-Based Study with a Focus on Terminal Differentiation in Adipogenesis. JOURNAL OF NATURAL PRODUCTS 2022; 85:1591-1602. [PMID: 35679136 DOI: 10.1021/acs.jnatprod.2c00213] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Obesity and its global prevalence has become a threat to human health, while its pharmacotherapy via the application of natural products is still underdeveloped. Here, we probed how 4,5,4'-trihydroxy-3,3'-dimethoxybibenzyl (TDB) derived from an orchid (Dendrobium ellipsophyllum) could exert its roles on the differentiation and function of murine (3T3-L1) and human (PCS-210-010) pre-adipocytes and offer some implications to modulate obesity. Cytotoxic effects of TDB on adipocytes were 2-fold lower than those detected with pre-adipocytes, and no significant difference was detected in cytotoxic profiles between both cell lineages. TDB in a dose-dependent manner decreased cellular lipid accumulation and enhanced lipolysis of both cell lines assessed at early differentiation and during maturation. Underlining molecular mechanisms proved that TBD paused the cell cycle progression by regulating inducers and inhibitors in mitotic clonal expansion, leading to growth arrest of pre-adipocytes at the G0/G1 phase. The compound also governed adipocyte differentiation by repressing expressions of crucial adipogenic regulators and effectors through deactivating the AKT/GSK-3β signaling pathway and activating the AMPK-ACC pathway. To this end, TDB has shown its pharmaceutical potential for modulating adipocyte development and function, and it would be a promising candidate for further assessments as a therapeutic agent to defeat obesity.
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Affiliation(s)
- Hnin Ei Ei Khine
- Pharmaceutical Sciences and Technology Graduate Program, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Rungroch Sungthong
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical Veterinary and Life Sciences, University of Glasgow, Glasgow G61 1QH, U.K
| | - Boonchoo Sritularak
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Natural Products for Ageing and Chronic Diseases, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Eakachai Prompetchara
- Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Cancer Cell and Molecular Biology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
| | - Chatchai Chaotham
- Pharmaceutical Sciences and Technology Graduate Program, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Cancer Cell and Molecular Biology, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Zhao S, Mo X, Wen Z, Ren L, Chen Z, Lin W, Wang Q, Min S, Chen B. Comprehensive bioinformatics analysis reveals the hub genes and pathways associated with multiple myeloma. Hematology 2022; 27:280-292. [PMID: 35192775 DOI: 10.1080/16078454.2022.2040123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
PURPOSE While the prognosis of multiple myeloma (MM) has significantly improved over the last decade because of new treatment options, it remains incurable. Aetiological explanations and biological targets based on genomics may provide additional help for rational disease intervention. MATERIALS AND METHODS Three microarray datasets associated with MM were downloaded from the Gene Expression Omnibus (GEO) database. GSE125364 and GSE39754 were used as the training set, and GSE13591 was used as the verification set. The differentially expressed genes (DEGs) were obtained from the training set, and Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were performed to annotate their functions. The hub genes were derived from the combined results of a protein-protein interaction (PPI) network and weighted gene coexpression network analysis (WGCNA). The receiver operating characteristic (ROC) curves of hub genes were plotted to evaluate their clinical diagnostic value. Biological processes and signaling pathways associated with hub genes were explained by gene set enrichment analysis (GSEA). RESULTS A total of 1759 DEGs were identified. GO and KEGG pathway analyses suggested that the DEGs were related to the process of protein metabolism. RPN1, SEC61A1, SPCS1, SRPR, SRPRB, SSR1 and TRAM1 were proven to have clinical diagnostic value for MM. The GSEA results suggested that the hub genes were widely involved in the N-glycan biosynthesis pathway. CONCLUSION The hub genes identified in this study can partially explain the potential molecular mechanisms of MM and serve as candidate biomarkers for disease diagnosis.
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Affiliation(s)
- Shengli Zhao
- Department of Spine Surgery, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou, People's Republic of China
| | - Xiaoyi Mo
- Department of Spine Surgery, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou, People's Republic of China
| | - Zhenxing Wen
- Department of Spine Surgery, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou, People's Republic of China
| | - Lijuan Ren
- Molecular Diagnosis and Gene Testing Center, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Zhipeng Chen
- Department of Spine Surgery, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou, People's Republic of China
| | - Wei Lin
- Department of Spine Surgery, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou, People's Republic of China
| | - Qi Wang
- Department of Radiotherapy, Nanyang Central Hospital, Nanyang, People's Republic of China
| | - Shaoxiong Min
- Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China
| | - Bailing Chen
- Department of Spine Surgery, the First Affiliated Hospital Sun Yat-sen University, Guangzhou, People's Republic of China.,Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology, Guangzhou, People's Republic of China
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Wirth K, Shinoda S, Sato-Dahlman M, Dickey DM, Bernlohr DA, Ikramuddin S, Yamamoto M. Fatty acid binding protein 4 regulates pancreatic cancer cell proliferation via activation of nuclear factor E2-related factor 2. Surg Obes Relat Dis 2021; 18:485-493. [PMID: 34998697 DOI: 10.1016/j.soard.2021.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 11/18/2021] [Accepted: 12/01/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Obesity and diabetes are associated with an increased incidence of pancreatic cancer. Fatty acid binding protein 4 (FABP4), noted to be higher in patients with severe obesity, is linked to the development and progression of several cancers, and its level in the circulation decreases after bariatric surgery. OBJECTIVE In this paper, we evaluate the role of FABP4 in pancreatic cancer progression. SETTING University Hospital and Laboratories, United States. METHODS AND RESULTS When Panc-1 (human) and Pan02 (mouse) pancreatic cancer cells were treated with FABP4 or the-single-point mutant FABP4 (R126Q, fatty acid binding site mutant), only FABP4 stimulated cellular proliferation. The transcriptional activity of nuclear factor E2-related factor 2 (NRF2) was increased in response to FABP4 but not the R126Q. FABP4 treatment also led to downregulation of reactive oxygen species (ROS) activity. Consistent with induced cell propagation by FABP4, the growth of Pan02 tumor was decreased in FABP4-null animals compared with C57BL/6J controls. CONCLUSION These results suggest that FABP4 increases pancreatic cancer proliferation via activation of NRF2 and downregulation of ROS activity.
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Affiliation(s)
- Keith Wirth
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Shuhei Shinoda
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota
| | - Mizuho Sato-Dahlman
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota; Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Deborah M Dickey
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota
| | - David A Bernlohr
- Department of Biochemistry, Molecular Biology, and Biophysics, University of Minnesota, Minneapolis, Minnesota
| | - Sayeed Ikramuddin
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota; Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Masato Yamamoto
- Department of Surgery, University of Minnesota, Minneapolis, Minnesota; Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota.
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Koga M, Nakagawa S, Sato A, Oka M, Makikhara K, Sakai Y, Toyomaki A, Sato M, Matsui M, Toda H, Kusumi I. Plasma fatty acid-binding protein 7 concentration correlates with depression/anxiety, cognition, and positive symptom in patients with schizophrenia. J Psychiatr Res 2021; 144:304-311. [PMID: 34715597 DOI: 10.1016/j.jpsychires.2021.10.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/08/2021] [Accepted: 10/19/2021] [Indexed: 10/20/2022]
Abstract
Because of the involvement of the brain in the pathophysiology of psychiatric disorders, obtaining information on the biochemical features that directly contribute to symptoms is challenging. The present study aimed to assess fatty acid-binding protein 7 (FABP7) expressed specifically in the brain and detectable in the peripheral blood and to investigate the correlation between blood FABP7 concentration and symptoms. We recruited 30, 29, and 35 patients with schizophrenia, bipolar disorder, and depression and evaluated using the Positive and Negative Syndrome Scale (PANSS), Young Mania Rating Scale (YMRS), and Hamilton Depression Rating Scale (HAMD-21), respectively. Plasma FABP7 concentrations correlated with PANSS scores (R2 = 0.3305, p < 0.001) but not with other scales. In the analysis of the relationship between five dimensions of schizophrenia symptoms derived from the PANSS 5-factor model and measured plasma FABP7 concentrations, severities of depression/anxiety, cognition, and positive symptom were significantly correlated with plasma FABP7 concentrations. Further molecular investigation of the functional and kinetic analyses of FABP7 is necessary to understand the relationship of this protein with schizophrenia pathology. Nevertheless, the present study suggests that FABP7 can be a biological indicator reflecting the pathogenesis of schizophrenia and has potential applications as a biomarker for diagnosis and symptom assessment.
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Affiliation(s)
- Minori Koga
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan.
| | - Shin Nakagawa
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan; Yamaguchi University Graduate School of Medicine Division of Neuropsychiatry, Department of Neuroscience, Japan
| | - Asumi Sato
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Matsuhiko Oka
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Keisuke Makikhara
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Yuri Sakai
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Atsuhito Toyomaki
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
| | - Mayumi Sato
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Marie Matsui
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Hiroyuki Toda
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - Ichiro Kusumi
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan
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Intermittent pressure imitating rolling manipulation ameliorates injury in skeletal muscle cells through oxidative stress and lipid metabolism signalling pathways. Gene 2021; 778:145460. [PMID: 33515727 DOI: 10.1016/j.gene.2021.145460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 11/25/2020] [Accepted: 01/20/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Traditional Chinese medicine manipulation (TCMM) is often used to treat human skeletal muscle injury, but its mechanism remains unclear due to difficulty standardizing and quantifying manipulation parameters. METHODS Here, dexamethasone sodium phosphate (DSP) was utilized to induce human skeletal muscle cell (HSkMC) impairments. Cells in a three-dimensional environment were divided into the control normal group (CNG), control injured group (CIG) and rolling manipulation group (RMG). The RMG was exposed to intermittent pressure imitating rolling manipulation (IPIRM) of TCMM via the FX‑5000™ compression system. Skeletal muscle damage was assessed via the cell proliferation rate, superoxide dismutase (SOD) activity, malondialdehyde (MDA) content and creatine kinase (CK) activity. Isobaric tagging for relative and absolute protein quantification (iTRAQ) and bioinformatic analysis were used to evaluate differentially expressed proteins (DEPs). RESULTS Higher-pressure IPIRM ameliorated the skeletal muscle cell injury induced by 1.2 mM DSP. Thirteen common DEPs after IPIRM were selected. Key biological processes, molecular functions, cellular components, and pathways were identified as mechanisms underlying the protective effect of TCMM against skeletal muscle damage. Some processes (response to oxidative stress, response to wounding, response to stress and lipid metabolism signalling pathways) were related to skeletal muscle cell injury. Western blotting for 4 DEPs confirmed the reliability of iTRAQ. CONCLUSIONS Higher-pressure IPIRM downregulated the CD36, Hsp27 and FABP4 proteins in oxidative stress and lipid metabolism pathways, alleviating excessive oxidative stress and lipid metabolism disorder in injured HSkMCs. The techniques used in this study might provide novel insights into the mechanism of TCMM.
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Sun F, Du J, Li H, Hao S, Zhao G, Lu F. FABP4 inhibitor BMS309403 protects against hypoxia-induced H9c2 cardiomyocyte apoptosis through attenuating endoplasmic reticulum stress. J Cell Mol Med 2020; 24:11188-11197. [PMID: 32896039 PMCID: PMC7576298 DOI: 10.1111/jcmm.15666] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/11/2020] [Accepted: 07/03/2020] [Indexed: 12/22/2022] Open
Abstract
Acute myocardial infarction is characterized by ischaemia-induced cardiomyocyte apoptosis, in which the endoplasmic reticulum (ER) stress plays an important role. The fatty acid-binding protein-4 (FABP4) has been implicated in regulating ER stress and apoptosis. Yet, whether FABP4 is involved in modulating cardiomyocyte apoptosis remains unclarified. By applying an in vitro model of hypoxia-induced apoptosis of H9c2 cardiomyocytes, we found that FABP4 expression was elevated upon hypoxia stimulation, which was further demonstrated to be transcriptionally activated by the hypoxia-inducible factor 1a (HIF-1α). In addition, the pharmacological inhibition of FABP4 with BMS309403 protected against hypoxia-induced apoptosis in cardiomyocytes, indicating that FABP4 induction is detrimental for cardiomyocyte survival under hypoxic condition. Moreover, BMS309403 attenuated ER stress in cardiomyocytes exposed to hypoxia, which, however, was reversed by tunicamycin, an ER stress activator. More importantly, the protective effect of BMS309403 on cardiomyocytes vanished in the presence of tunicamycin. Thus, these observations establish that FABP4 inhibitor BMS309403 reduces hypoxia-induced cardiomyocyte apoptosis through attenuating excessive ER stress, implying that FABP4 inhibition may be of clinical benefit for MI treatment.
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Affiliation(s)
- Fuqiang Sun
- Department of Cardiovascular SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Jiangchuan Du
- Department of UltrasoundThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Hongbin Li
- Department of Critical Care MedicineThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Shuang Hao
- Department of Cardiovascular SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Guochang Zhao
- Department of Cardiovascular SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Fanfan Lu
- Department of Cardiovascular SurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
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Dou HX, Wang T, Su HX, Gao DD, Xu YC, Li YX, Wang HY. Exogenous FABP4 interferes with differentiation, promotes lipolysis and inflammation in adipocytes. Endocrine 2020; 67:587-596. [PMID: 31845180 DOI: 10.1007/s12020-019-02157-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 12/09/2019] [Indexed: 12/14/2022]
Abstract
PURPOSE Fatty acid binding protein 4 (FABP4) has been demonstrated to be secreted from adipocytes in an unconventional pathway associated with lipolysis. Circulating FABP4 is elevated in metabolic disorders and has been shown to affect various peripheral cells such as pancreatic β-cells, hepatocytes and macrophages, but its effects on adipocytes remains unclear. The aim of this study was to investigate the effects of exogenous FABP4 (eFABP4) on adipocyte differentiation and function. METHODS 3T3-L1 pre-adipocytes or mature adipocytes were treated with recombinant FABP4 in the absence or presence of FABP4 inhibitor I-9/p38 MAPK inhibitor SB203580; Meanwhile male C57BL/6J mice were subcutaneously injected twice a day with recombinant FABP4 (0.35 mg/kg) with or without I-9 (50 mg/kg) for 2 weeks. The effects of eFABP4 on differentiation, lipolysis and inflammation were determined by triglyceride measurement or lipolysis assay, western blotting, or RT-qPCR analysis. RESULTS eFABP4 treatment significantly reduced intracellular triglyceride content and decreased expression of adipogenic markers peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer binding protein alpha (C/EBPα), intracellular FABP4, and adiponectin in 3T3-L1 cells. Besides, eFABP4 promoted lipolysis and inflammation in differentiated 3T3-L1 adipocytes as well as in adipose tissue of eFABP4-treated C57BL/6J mice, with elevated gene expression of monocyte chemoattractant protein (MCP)-1, tumor necrosis factor (TNF)-α, and elevated protein expression of adipose triglyceride lipase (ATGL), phosphorylation of hormone-sensitive lipase (HSL) (Ser-660), p38, and nuclear factor-kappa B (NF-κB). The pro-inflammatory and pro-lipolytic effects of eFABP4 could be reversed by SB203580/I-9. CONCLUSIONS These findings indicate that eFABP4 interferes with adipocyte differentiation, induces p38/HSL mediated lipolysis and p38/NF-κB mediated inflammation in adipocytes in vitro and in vivo.
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Affiliation(s)
- Hui-Xia Dou
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Ting Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Hai-Xia Su
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Ding-Ding Gao
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Ye-Chun Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Ying-Xia Li
- School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - He-Yao Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, 100049, Beijing, China.
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Tang W, Chen O, Yao F, Cui L. miR‑455 targets FABP4 to protect human endometrial stromal cells from cytotoxicity induced by hydrogen peroxide. Mol Med Rep 2019; 20:4781-4790. [PMID: 31638263 PMCID: PMC6854537 DOI: 10.3892/mmr.2019.10727] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 04/04/2019] [Indexed: 01/03/2023] Open
Abstract
Oxidative stress and dysregulation of antioxidant systems are associated with various complications in pregnancy. Endometriosis is a common gynecologic disease that affects women of reproductive age. Recent studies have indicated that oxidative stress may be involved in the pathophysiology of endometriosis. It has been reported that microRNAs can regulate the cellular response to oxidative stress, and mounting evidence indicates that fatty acid binding protein 4 (FABP4) plays an essential role in the regulation of systemic redox capacity. In the present study, we demonstrated that miR-455 is a putative FABP4-targeting miRNA. A luciferase activity assay revealed that miR-455 can successfully bind to the 3′-UTR of FABP4. Overexpression of miR-455 led to the downregulation of FABP4 at both the mRNA and protein levels in a human endometrial stromal cell line. Then, the roles of miR-455 and FABP4 in oxidative stress induced by hydrogen peroxide (H2O2) in human endometrial stromal cells were examined. We found that ectopic expression of miR-455 protected cells from damage caused by H2O2. Further investigation found that forced expression of miR-455 reduced the level of reactive oxygen species (ROS) and malondialdehyde (MDA), while the activities of superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) were promoted. Silencing of FABP4 also generated cytoprotective effects against H2O2 in human endometrial stromal cells. Moreover, overexpression FABP4 abrogated the miR-455-mediated antioxidative stress effects in cells. Taken together, we propose that miR-455 protects human endometrial stromal cells from oxidative stress at least partly via regulation of FABP4.
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Affiliation(s)
- Wenbo Tang
- Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Oujing Chen
- Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Fengxiang Yao
- Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China
| | - Lining Cui
- Department of Obstetrics and Gynecology, Ningbo First Hospital, Ningbo, Zhejiang 315000, P.R. China
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Paulenda T, Draber P. The role of ORMDL proteins, guardians of cellular sphingolipids, in asthma. Allergy 2016; 71:918-30. [PMID: 26969910 DOI: 10.1111/all.12877] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/06/2016] [Indexed: 12/29/2022]
Abstract
A family of widely expressed ORM-like (ORMDL) proteins has been recently linked to asthma in genomewide association studies in humans and extensively explored in in vivo studies in mice. ORMDL proteins are key regulators of serine palmitoyltransferase, an enzyme catalyzing the initial step of sphingolipid biosynthesis. Sphingolipids play prominent roles in cell signaling and response to stress, and they affect the mechanistic properties of cellular membranes. Deregulation of sphingolipid biosynthesis and their recycling has been proven to support and even cause several diseases including allergy, inflammation, and asthma. ORMDL3, the most extensively studied member of the ORMDL family, has been shown to be important for endoplasmic reticulum homeostasis by regulating the unfolded protein response and calcium response. In immune cells, ORMDL3 is involved in migration and in the production of proinflammatory cytokines. Furthermore, changes in the expression level of ORMDL3 are important in allergen-induced asthma pathologies. This review focuses on functional aspects of the ORMDL family proteins, which may serve as new therapeutic targets for the treatment of asthma and some other life-threatening diseases.
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Affiliation(s)
- T. Paulenda
- Laboratory of Signal Transduction; Institute of Molecular Genetics; Academy of Sciences of the Czech Republic; Prague Czech Republic
| | - P. Draber
- Laboratory of Signal Transduction; Institute of Molecular Genetics; Academy of Sciences of the Czech Republic; Prague Czech Republic
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Bosquet A, Guaita-Esteruelas S, Saavedra P, Rodríguez-Calvo R, Heras M, Girona J, Masana L. Exogenous FABP4 induces endoplasmic reticulum stress in HepG2 liver cells. Atherosclerosis 2016; 249:191-9. [DOI: 10.1016/j.atherosclerosis.2016.04.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Revised: 03/21/2016] [Accepted: 04/13/2016] [Indexed: 01/22/2023]
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Porcelli S, Crisafulli C, Calabrò M, Serretti A, Rujescu D. Possible biomarkers modulating haloperidol efficacy and/or tolerability. Pharmacogenomics 2016; 17:507-29. [PMID: 27023437 DOI: 10.2217/pgs.16.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Haloperidol (HP) is widely used in the treatment of several forms of psychosis. Despite of its efficacy, HP use is a cause of concern for the elevated risk of adverse drug reactions. adverse drug reactions risk and HP efficacy greatly vary across subjects, indicating the involvement of several factors in HP mechanism of action. The use of biomarkers that could monitor or even predict HP treatment impact would be of extreme importance. We reviewed the elements that could potentially be used as peripheral biomarkers of HP effectiveness. Although a validated biomarker still does not exist, we underlined the several potential findings (e.g., about cytokines, HP metabolites and genotypic biomarkers) which could pave the way for future research on HP biomarkers.
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Affiliation(s)
- Stefano Porcelli
- Department of Biomedical & NeuroMotor Sciences, University of Bologna, Italy
| | - Concetta Crisafulli
- Department of Biomedical Science & Morphological & Functional Images, University of Messina, Italy
| | - Marco Calabrò
- Department of Biomedical Science & Morphological & Functional Images, University of Messina, Italy
| | - Alessandro Serretti
- Department of Biomedical & NeuroMotor Sciences, University of Bologna, Italy
| | - Dan Rujescu
- Department of Psychiatry, University of Halle, Halle, Germany
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Cohen-Zinder M, Asher A, Lipkin E, Feingersch R, Agmon R, Karasik D, Brosh A, Shabtay A. FABP4 is a leading candidate gene associated with residual feed intake in growing Holstein calves. Physiol Genomics 2016; 48:367-76. [PMID: 26993365 DOI: 10.1152/physiolgenomics.00121.2015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 03/09/2016] [Indexed: 01/08/2023] Open
Abstract
Ecological and economic concerns drive the need to improve feed utilization by domestic animals. Residual feed intake (RFI) is one of the most acceptable measures for feed efficiency (FE). However, phenotyping RFI-related traits is complex and expensive and requires special equipment. Advances in marker technology allow the development of various DNA-based selection tools. To assimilate these technologies for the benefit of RFI-based selection, reliable phenotypic measures are prerequisite. In the current study, we identified single nucleotide polymorphisms (SNPs) associated with RFI phenotypic consistency across different ages and diets (named RFI 1-3), using DNA samples of high or low RFI ranked Holstein calves. Using targeted sequencing of chromosomal regions associated with FE- and RFI-related traits, we identified 48 top SNPs significantly associated with at least one of three defined RFIs. Eleven of these SNPs were harbored by the fatty acid binding protein 4 (FABP4). While 10 significant SNPs found in FABP4 were common for RFI 1 and RFI 3, one SNP (FABP4_5; A<G substitution), in the promoter region of the gene, was significantly associated with all three RFIs. As the three RFI classes reflect changing diets and ages with concomitant RFI phenotypic consistency, the above polymorphisms and in particular FABP4_5, might be considered possible markers for RFI-based selection for FE in the Holstein breed, following a larger-scale validation.
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Affiliation(s)
- Miri Cohen-Zinder
- Beef cattle section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel;
| | - Aviv Asher
- Beef cattle section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel; Israeli Center for Interdisciplinary Research in Chronobiology, University of Haifa, Haifa, Israel
| | - Ehud Lipkin
- Department of Genetics, The Hebrew University of Jerusalem, Jerusalem, Israel; and
| | - Roi Feingersch
- Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel
| | - Rotem Agmon
- Beef cattle section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel
| | - David Karasik
- Faculty of Medicine in the Galilee, Bar-Ilan University, Safed, Israel
| | - Arieh Brosh
- Beef cattle section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel
| | - Ariel Shabtay
- Beef cattle section, Newe-Ya'ar Research Center, Agricultural Research Organization, Ramat Yishay, Israel
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Comparative proteomic analysis of growth hormone secretagogue A233 treatment of murine macrophage cells J774A.2 indicates it has a role in antiviral innate response. Biochem Biophys Rep 2016; 5:379-387. [PMID: 28955845 PMCID: PMC5600417 DOI: 10.1016/j.bbrep.2016.01.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 12/18/2015] [Accepted: 01/12/2016] [Indexed: 11/21/2022] Open
Abstract
Background Growth hormone secretagogues (GHS), among other factors, regulate the release of GH. The biological activity of the secretagogue peptide A233 as a promoter of growth and innate immunity in teleost fish has previously been demonstrated, but its role in the immune system of mammals is not well understood. Methods The effect of the peptide was investigated in J774A.2 macrophage cells using a comparative proteomics approach after 6 and 12 h of peptide stimulation. Results The functional analysis of differentially modulated proteins showed that A233 peptide treatment appears to promote activation and ROS-dependent cytotoxic functions in macrophages and enhanced expression of antiviral protein complexes such as MAVS. In accordance with this hypothesis, we found that A233 treatment enhanced superoxide anion production and the IFN-γ level in J774A.2 cells and mouse splenocytes, respectively, and reduced viral load in a dengue virus mouse model of infection. Conclusions The growth hormone secretagogue A233 peptide promotes activation of ROS-dependent cytotoxic functions and exerts immunomodulatory effects that enable an antiviral state in a dengue virus mouse model. General Significance The increase of IFN-γ level and the differential modulation of antiviral proteins by the A233 peptide suggest that the molecule could activate an innate immune response with a possible further impact in the treatment of acute and chronic diseases. Peptide treatment increases superoxide anion production in J774 macrophage cells. A233 peptide treatment increases INF-γ levels in mouse splenocytes. Mice treated with A233 significantly reduce viral load after challenge with DENV-3. Peptide treatment may activates cytotoxic functions and exert an antiviral effect.
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