1
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Melrose J. Keratan sulfate, an electrosensory neurosentient bioresponsive cell instructive glycosaminoglycan. Glycobiology 2024; 34:cwae014. [PMID: 38376199 PMCID: PMC10987296 DOI: 10.1093/glycob/cwae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/12/2024] [Accepted: 02/13/2024] [Indexed: 02/21/2024] Open
Abstract
The roles of keratan sulfate (KS) as a proton detection glycosaminoglycan in neurosensory processes in the central and peripheral nervous systems is reviewed. The functional properties of the KS-proteoglycans aggrecan, phosphacan, podocalyxcin as components of perineuronal nets in neurosensory processes in neuronal plasticity, cognitive learning and memory are also discussed. KS-glycoconjugate neurosensory gels used in electrolocation in elasmobranch fish species and KS substituted mucin like conjugates in some tissue contexts in mammals need to be considered in sensory signalling. Parallels are drawn between KS's roles in elasmobranch fish neurosensory processes and its roles in mammalian electro mechanical transduction of acoustic liquid displacement signals in the cochlea by the tectorial membrane and stereocilia of sensory inner and outer hair cells into neural signals for sound interpretation. The sophisticated structural and functional proteins which maintain the unique high precision physical properties of stereocilia in the detection, transmittance and interpretation of acoustic signals in the hearing process are important. The maintenance of the material properties of stereocilia are essential in sound transmission processes. Specific, emerging roles for low sulfation KS in sensory bioregulation are contrasted with the properties of high charge density KS isoforms. Some speculations are made on how the molecular and electrical properties of KS may be of potential application in futuristic nanoelectronic, memristor technology in advanced ultrafast computing devices with low energy requirements in nanomachines, nanobots or molecular switches which could be potentially useful in artificial synapse development. Application of KS in such innovative areas in bioregulation are eagerly awaited.
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Affiliation(s)
- James Melrose
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Raymond Purves Laboratory, Institute of Bone and Joint Research, Kolling Institute of Medical Research, Northern Sydney Local Health District, Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
- Sydney Medical School, Northern, University of Sydney at Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
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2
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Transcriptome Profiling Reveals Differential Expression of Circadian Behavior Genes in Peripheral Blood of Monozygotic Twins Discordant for Parkinson's Disease. Cells 2022; 11:cells11162599. [PMID: 36010675 PMCID: PMC9406852 DOI: 10.3390/cells11162599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 11/17/2022] Open
Abstract
Parkinson’s disease (PD) is one of the most common neurodegenerative diseases. Investigating individuals with the most identical genetic background is optimal for minimizing the genetic contribution to gene expression. These individuals include monozygotic twins discordant for PD. Monozygotic twins have the same genetic background, age, sex, and often similar environmental conditions. The aim of this study was to carry out a transcriptome analysis of the peripheral blood of three pairs of monozygotic twins discordant for PD. We identified the metabolic process “circadian behavior” as a priority process for further study. Different expression of genes included in the term “circadian behavior” confirms that this process is involved in PD pathogenesis. We found increased expression of three genes associated with circadian behavior, i.e., PTGDS, ADORA2A, and MTA1, in twins with PD. These genes can be considered as potential candidate genes for this disease.
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3
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Fujimori K. Prostaglandin D<sub>2</sub> and F<sub>2α</sub> as Regulators of Adipogenesis and Obesity. Biol Pharm Bull 2022; 45:985-991. [DOI: 10.1248/bpb.b22-00210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Ko Fujimori
- Department of Pathobiochemistry, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University
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4
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Yang H, Chen X, Li Z, Wu X, Zhou M, Zhang X, Liu Y, Sun Y, Zhu C, Guo Q, Chen T, Zhang J. Genome-Wide Analysis Indicates a Complete Prostaglandin Pathway from Synthesis to Inactivation in Pacific White Shrimp, Litopenaeus vannamei. Int J Mol Sci 2022; 23:ijms23031654. [PMID: 35163575 PMCID: PMC8835781 DOI: 10.3390/ijms23031654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 02/02/2023] Open
Abstract
Prostaglandins (PGs) play many essential roles in the development, immunity, metabolism, and reproduction of animals. In vertebrates, arachidonic acid (ARA) is generally converted to prostaglandin G2 (PGG2) and H2 (PGH2) by cyclooxygenase (COX); then, various biologically active PGs are produced through different downstream prostaglandin synthases (PGSs), while PGs are inactivated by 15-hydroxyprostaglandin dehydrogenase (PGDH). However, there is very limited knowledge of the PG biochemical pathways in invertebrates, particularly for crustaceans. In this study, nine genes involved in the prostaglandin pathway, including a COX, seven PGSs (PGES, PGES2, PGDS1/2, PGFS, AKR1C3, and TXA2S), and a PGDH were identified based on the Pacific white shrimp (Litopenaeus vannamei) genome, indicating a more complete PG pathway from synthesis to inactivation in crustaceans than in insects and mollusks. The homologous genes are conserved in amino acid sequences and structural domains, similar to those of related species. The expression patterns of these genes were further analyzed in a variety of tissues and developmental processes by RNA sequencing and quantitative real-time PCR. The mRNA expression of PGES was relatively stable in various tissues, while other genes were specifically expressed in distant tissues. During embryo development to post-larvae, COX, PGDS1, GDS2, and AKR1C3 expressions increased significantly, and increasing trends were also observed on PGES, PGDS2, and AKR1C3 at the post-molting stage. During the ovarian maturation, decreasing trends were found on PGES1, PGDS2, and PGDH in the hepatopancreas, but all gene expressions remained relatively stable in ovaries. In conclusion, this study provides basic knowledge for the synthesis and inactivation pathway of PG in crustaceans, which may contribute to the understanding of their regulatory mechanism in ontogenetic development and reproduction.
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Affiliation(s)
- Hao Yang
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
| | - Xiaoli Chen
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (C.Z.)
| | - Zhi Li
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; (Z.L.); (X.W.); (M.Z.)
| | - Xugan Wu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; (Z.L.); (X.W.); (M.Z.)
| | - Mingyu Zhou
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; (Z.L.); (X.W.); (M.Z.)
| | - Xin Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
| | - Yujie Liu
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
| | - Yuying Sun
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
| | - Chunhua Zhu
- Guangdong Research Center on Reproductive Control and Breeding Technology of Indigenous Valuable Fish Species, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, China; (X.C.); (C.Z.)
| | - Qiuhui Guo
- EasyATGC Limited Liability Company, Shenzhen 518081, China;
| | - Ting Chen
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology (LMB), South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;
- Correspondence: (T.C.); (J.Z.)
| | - Jiquan Zhang
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding 071002, China; (H.Y.); (Y.L.); (Y.S.)
- Correspondence: (T.C.); (J.Z.)
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5
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Chen X, He Z, Li X, Song J, Huang M, Shi X, Li X, Li J, Xu G, Zheng J. Cuticle deposition duration in the uterus is correlated with eggshell cuticle quality in White Leghorn laying hens. Sci Rep 2021; 11:22100. [PMID: 34764400 PMCID: PMC8586345 DOI: 10.1038/s41598-021-01718-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 11/01/2021] [Indexed: 11/23/2022] Open
Abstract
The cuticle formed in the uterus is the outermost layer as the first defense line of eggshell against microbial invasions in most avian species, and analyzing its genetic regulation and influencing factors are of great importance to egg biosecurity in poultry production worldwide. The current study compared the uterine transcriptome and proteome of laying hens producing eggs with good and poor cuticle quality (GC and PC, the top and tail of the cuticle quality distribution), and identified several genes involved with eggshell cuticle quality (ESCQ). Overall, transcriptomic analysis identified 53 differentially expressed genes (DEGs) between PC versus GC group hens, among which 25 were up-regulated and 28 were down-regulated. No differences were found in the uterine proteome. Several DEGs, including PTGDS, PLCG2, ADM and PRLR related to uterine functions and reproductive hormones, were validated by qPCR analysis. Egg quality measurements between GC and PC hens showed GC hens had longer laying interval between two consecutive ovipositions (25.64 ± 1.23 vs 24.94 ± 1.12 h) and thicker eggshell thickness (352.01 ± 23.04 vs 316.20 ± 30.58 μm) (P < 0.05). Apart from eggshell traits, other egg quality traits didn't differ. The result demonstrated eggshell and cuticle deposition duration in the uterus is one of the major factors affecting ESCQ in laying hens. PTGDS, PLCG2, ADM and PRLR genes were discovered and might play crucial roles in cuticle deposition by regulating the uterine muscular activities and secretion function. The findings in the present study provide new insights into the genetic regulation of cuticle deposition in laying hens and establish a foundation for further investigations.
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Affiliation(s)
- Xia Chen
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing, 100097, China
| | - Zhaoxiang He
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Xingzheng Li
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
- Shenzhen Agricultural Genome Research Institute, Chinese Academy of Agriculture Sciences, Shenzhen, 440307, China
| | - Jianlou Song
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Mingyi Huang
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Xuefeng Shi
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Xianyu Li
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Junying Li
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Guiyun Xu
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Jiangxia Zheng
- National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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6
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Urade Y. Biochemical and Structural Characteristics, Gene Regulation, Physiological, Pathological and Clinical Features of Lipocalin-Type Prostaglandin D 2 Synthase as a Multifunctional Lipocalin. Front Physiol 2021; 12:718002. [PMID: 34744762 PMCID: PMC8569824 DOI: 10.3389/fphys.2021.718002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
Lipocalin-type prostaglandin (PG) D2 synthase (L-PGDS) catalyzes the isomerization of PGH2, a common precursor of the two series of PGs, to produce PGD2. PGD2 stimulates three distinct types of G protein-coupled receptors: (1) D type of prostanoid (DP) receptors involved in the regulation of sleep, pain, food intake, and others; (2) chemoattractant receptor-homologous molecule expressed on T helper type 2 cells (CRTH2) receptors, in myelination of peripheral nervous system, adipocyte differentiation, inhibition of hair follicle neogenesis, and others; and (3) F type of prostanoid (FP) receptors, in dexamethasone-induced cardioprotection. L-PGDS is the same protein as β-trace, a major protein in human cerebrospinal fluid (CSF). L-PGDS exists in the central nervous system and male genital organs of various mammals, and human heart; and is secreted into the CSF, seminal plasma, and plasma, respectively. L-PGDS binds retinoic acids and retinal with high affinities (Kd < 100 nM) and diverse small lipophilic substances, such as thyroids, gangliosides, bilirubin and biliverdin, heme, NAD(P)H, and PGD2, acting as an extracellular carrier of these substances. L-PGDS also binds amyloid β peptides, prevents their fibril formation, and disaggregates amyloid β fibrils, acting as a major amyloid β chaperone in human CSF. Here, I summarize the recent progress of the research on PGD2 and L-PGDS, in terms of its “molecular properties,” “cell culture studies,” “animal experiments,” and “clinical studies,” all of which should help to understand the pathophysiological role of L-PGDS and inspire the future research of this multifunctional lipocalin.
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Affiliation(s)
- Yoshihiro Urade
- Center for Supporting Pharmaceutical Education, Daiichi University of Pharmacy, Fukuoka, Japan.,Isotope Science Center, The University of Tokyo, Tokyo, Japan
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7
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Srivastava A, Palaia T, Hall C, Stevenson M, Lee J, Ragolia L. Lipocalin-type Prostaglandin D2 Synthase appears to function as a Novel Adipokine Preventing Adipose Dysfunction in response to a High Fat Diet. Prostaglandins Other Lipid Mediat 2021; 157:106585. [PMID: 34371198 DOI: 10.1016/j.prostaglandins.2021.106585] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/24/2021] [Accepted: 08/03/2021] [Indexed: 12/29/2022]
Abstract
Adipose dysfunction is the primary defect in obesity that contributes to the development of dyslipidemia, insulin resistance, cardiovascular diseases, type 2 diabetes, non-alcoholic fatty liver disease (NAFLD) and some cancers. Previously, we demonstrated the development of NAFLD in lipocalin-type prostaglandin D2 synthase (L-PGDS) knockout mice regardless of diet. In the present study, we examined the role of L-PGDS in adipose in response to a high fat diet. We observed decreased expression of L-PGDS in adipose tissue and concomitant lower plasma levels in a dietary model of obesity as well as in insulin resistant 3T3-L1 adipocytes. We show reduced adiponectin expression and phosphorylation of AMPK in white adipose tissue of L-PGDS KO mice after 14 weeks on a high fat diet as compared to control C57BL/6 mice. We also observe an increased fat content in L-PGDS KO mice as demonstrated by adipocyte hypertrophy and increased expression of lipogenenic genes. We confirmed our in vivo findings in in vitro 3T3-L1 adipocytes, using an enzymatic inhibitor of L-PGDS (AT56). Rosiglitazone treatment drastically increased L-PGDS expression in insulin resistant 3T3-L1 adipocytes and increased adiponectin expression and AMPK phosphorylation in AT56 treated 3T3-L1 adipocytes. We conclude that the absence of L-PGDS has a deleterious effect on adipose tissue functioning, which further reduces insulin sensitivity in adipose tissue. Consequently, we propose L-PGDS appears to function as a potential member of the adipokine secretome involved in the regulation of the obesity-associated metabolic syndrome.
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Affiliation(s)
- Ankita Srivastava
- Department of Biomedical research, NYU Langone Hospital, Long Island, United States
| | - Thomas Palaia
- Department of Biomedical research, NYU Langone Hospital, Long Island, United States; Department of Foundations of Medicine, NYU Long Island School of Medicine, 101 Mineola Blvd. Suite 4-003, Mineola, NY, 11501, United States
| | - Christopher Hall
- Department of Biomedical research, NYU Langone Hospital, Long Island, United States
| | - Matthew Stevenson
- Department of Biomedical research, NYU Langone Hospital, Long Island, United States
| | - Jenny Lee
- Department of Biomedical research, NYU Langone Hospital, Long Island, United States
| | - Louis Ragolia
- Department of Biomedical research, NYU Langone Hospital, Long Island, United States; Department of Foundations of Medicine, NYU Long Island School of Medicine, 101 Mineola Blvd. Suite 4-003, Mineola, NY, 11501, United States.
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8
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Greenan-Barrett J, Doolan G, Shah D, Virdee S, Robinson GA, Choida V, Gak N, de Gruijter N, Rosser E, Al-Obaidi M, Leandro M, Zandi MS, Pepper RJ, Salama A, Jury EC, Ciurtin C. Biomarkers Associated with Organ-Specific Involvement in Juvenile Systemic Lupus Erythematosus. Int J Mol Sci 2021; 22:7619. [PMID: 34299237 PMCID: PMC8306911 DOI: 10.3390/ijms22147619] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 12/16/2022] Open
Abstract
Juvenile systemic lupus erythematosus (JSLE) is characterised by onset before 18 years of age and more severe disease phenotype, increased morbidity and mortality compared to adult-onset SLE. Management strategies in JSLE rely heavily on evidence derived from adult-onset SLE studies; therefore, identifying biomarkers associated with the disease pathogenesis and reflecting particularities of JSLE clinical phenotype holds promise for better patient management and improved outcomes. This narrative review summarises the evidence related to various traditional and novel biomarkers that have shown a promising role in identifying and predicting specific organ involvement in JSLE and appraises the evidence regarding their clinical utility, focusing in particular on renal biomarkers, while also emphasising the research into cardiovascular, haematological, neurological, skin and joint disease-related JSLE biomarkers, as well as genetic biomarkers with potential clinical applications.
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Affiliation(s)
- James Greenan-Barrett
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Georgia Doolan
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Devina Shah
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Simrun Virdee
- Department of Ophthalmology, Royal Free Hospital, London NW3 2QG, UK;
| | - George A. Robinson
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Varvara Choida
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Nataliya Gak
- Department of Rheumatology, University College London Hospital NHS Foundation Trust, London NW1 2BU, UK; (N.G.); (M.L.)
| | - Nina de Gruijter
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Elizabeth Rosser
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
| | - Muthana Al-Obaidi
- Department of Paediatric Rheumatology, Great Ormond Street Hospital, London WC1N 3JH, UK;
- NIHR Biomedical Research Centre, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK
| | - Maria Leandro
- Department of Rheumatology, University College London Hospital NHS Foundation Trust, London NW1 2BU, UK; (N.G.); (M.L.)
- Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6DH, UK;
| | - Michael S. Zandi
- Department of Neurology, National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London NW1 2BU, UK;
| | - Ruth J. Pepper
- Department of Renal Medicine, Royal Free Hospital, University College London, London NW3 2QG, UK; (R.J.P.); (A.S.)
| | - Alan Salama
- Department of Renal Medicine, Royal Free Hospital, University College London, London NW3 2QG, UK; (R.J.P.); (A.S.)
| | - Elizabeth C. Jury
- Centre for Rheumatology, Division of Medicine, University College London, London WC1E 6DH, UK;
| | - Coziana Ciurtin
- Centre for Adolescent Rheumatology Versus Arthritis, University College London, London WC1E 6DH, UK; (J.G.-B.); (G.D.); (D.S.); (G.A.R.); (V.C.); (N.d.G.); (E.R.)
- Department of Rheumatology, University College London Hospital NHS Foundation Trust, London NW1 2BU, UK; (N.G.); (M.L.)
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9
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Knuplez E, Sturm EM, Marsche G. Emerging Role of Phospholipase-Derived Cleavage Products in Regulating Eosinophil Activity: Focus on Lysophospholipids, Polyunsaturated Fatty Acids and Eicosanoids. Int J Mol Sci 2021; 22:4356. [PMID: 33919453 PMCID: PMC8122506 DOI: 10.3390/ijms22094356] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/16/2021] [Accepted: 04/19/2021] [Indexed: 12/19/2022] Open
Abstract
Eosinophils are important effector cells involved in allergic inflammation. When stimulated, eosinophils release a variety of mediators initiating, propagating, and maintaining local inflammation. Both, the activity and concentration of secreted and cytosolic phospholipases (PLAs) are increased in allergic inflammation, promoting the cleavage of phospholipids and thus the production of reactive lipid mediators. Eosinophils express high levels of secreted phospholipase A2 compared to other leukocytes, indicating their direct involvement in the production of lipid mediators during allergic inflammation. On the other side, eosinophils have also been recognized as crucial mediators with regulatory and homeostatic roles in local immunity and repair. Thus, targeting the complex network of lipid mediators offer a unique opportunity to target the over-activation and 'pro-inflammatory' phenotype of eosinophils without compromising the survival and functions of tissue-resident and homeostatic eosinophils. Here we provide a comprehensive overview of the critical role of phospholipase-derived lipid mediators in modulating eosinophil activity in health and disease. We focus on lysophospholipids, polyunsaturated fatty acids, and eicosanoids with exciting new perspectives for future drug development.
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Affiliation(s)
| | | | - Gunther Marsche
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria; (E.K.); (E.M.S.)
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10
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Philibert P, Déjardin S, Pirot N, Pruvost A, Nguyen AL, Bernex F, Poulat F, Boizet-Bonhoure B. In the mouse, prostaglandin D2 signalling protects the endometrium against adenomyosis. Mol Hum Reprod 2021; 27:6225287. [PMID: 33851217 DOI: 10.1093/molehr/gaab029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 03/17/2021] [Indexed: 12/29/2022] Open
Abstract
Adenomyosis is characterised by epithelial gland and mesenchymal stroma invasion of the uterine myometrium. Adenomyosis is an oestrogen-dependent gynaecological disease in which a number of factors, such as inflammatory molecules, prostaglandins (PGs), angiogenic factors, cell proliferation and extracellular matrix remodelling proteins, also play a role as key disease mediators. In this study, we used mice lacking both lipocalin and hematopoietic-PG D synthase (L- and H-Pgds) genes in which PGD2 is not produced to elucidate PGD2 roles in the uterus. Gene expression studied by real-time PCR and hormone dosages performed by ELISA or liquid chromatography tandem mass spectroscopy in mouse uterus samples showed that components of the PGD2 signalling pathway, both PGDS and PGD2-receptors, are expressed in the mouse endometrium throughout the oestrus cycle with some differences among uterine compartments. We showed that PGE2 production and the steroidogenic pathway are dysregulated in the absence of PGD2. Histological analysis of L/H-Pgds-/- uteri, and immunohistochemistry and immunofluorescence analyses of proliferation (Ki67), endothelial cell (CD31), epithelial cell (pan-cytokeratin), myofibroblast (α-SMA) and mesenchymal cell (vimentin) markers, identify that 6-month-old L/H-Pgds-/- animals developed adenomyotic lesions, and that disease severity increased with age. In conclusion, this study suggests that the PGD2 pathway has major roles in the uterus by protecting the endometrium against adenomyosis development. Additional experiments, using for instance transcriptomic approaches, are necessary to fully determine the molecular mechanisms that lead to adenomyosis in L/H-Pgds-/- mice and to confirm whether this strain is an appropriate model for studying the human disease.
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Affiliation(s)
- Pascal Philibert
- Institut de Génétique Humaine, Centre National de la Recherche Scientifique, Université de Montpellier, Montpellier, France.,Laboratoire de Biochimie et Biologie Moléculaire, Hôpital Carèmeau, CHU de Nîmes, Nîmes, France
| | - Stéphanie Déjardin
- Institut de Génétique Humaine, Centre National de la Recherche Scientifique, Université de Montpellier, Montpellier, France
| | - Nelly Pirot
- Institut de Recherche en Cancérologie de Montpellier IRCM, Université de Montpellier, ICM, INSERM, Montpellier, France.,BioCampus, RHEM, Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Alain Pruvost
- Département Médicaments et Technologies pour la Santé (DMTS), Université Paris Saclay, CEA, INRAE, SPI, Gif-sur-Yvette, France
| | - Anvi Laetitia Nguyen
- Département Médicaments et Technologies pour la Santé (DMTS), Université Paris Saclay, CEA, INRAE, SPI, Gif-sur-Yvette, France
| | - Florence Bernex
- Institut de Recherche en Cancérologie de Montpellier IRCM, Université de Montpellier, ICM, INSERM, Montpellier, France.,BioCampus, RHEM, Université de Montpellier, CNRS, INSERM, Montpellier, France
| | - Francis Poulat
- Institut de Génétique Humaine, Centre National de la Recherche Scientifique, Université de Montpellier, Montpellier, France
| | - Brigitte Boizet-Bonhoure
- Institut de Génétique Humaine, Centre National de la Recherche Scientifique, Université de Montpellier, Montpellier, France
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11
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Aukema HM. Prostaglandins as potential targets for the treatment of polycystic kidney disease. Prostaglandins Leukot Essent Fatty Acids 2021; 164:102220. [PMID: 33285393 DOI: 10.1016/j.plefa.2020.102220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 12/15/2022]
Abstract
Polycystic kidney disease (PKD) is characterized by the proliferation of fluid-filled kidney cysts that enlarge over time, causing damage to the surrounding kidney and ultimately resulting in kidney failure. Both increased cell proliferation and fluid secretion are stimulated by increased cyclic adenosine monophosphate (cAMP) in PKD kidneys, so many treatments for the disease target cAMP lowering. Prostaglandins (PG) levels are elevated in multiple animal models of PKD and mediate many of their effects by elevating cAMP levels. Inhibiting the production of PG with cyclooxygenase 2 (COX2) inhibitors reduces PG levels and reduces disease progression. However, COX inhibitors also block beneficial PG and can cause nephrotoxicity. In an orthologous model of the main form of PKD, PGD2 and PGI2 were the two PG highest in kidneys and most affected by a COX2 inhibitor. Future studies are needed to determine whether specific blockage of PGD2 and/or PGI2 activity would lead to more targeted and effective treatments with fewer undesirable side-effects.
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Affiliation(s)
- Harold M Aukema
- Department of Food and Human Nutritional Sciences, University of Manitoba, MB R3T 2N2, Canada; Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada.
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12
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Ouhaddi Y, Najar M, Paré F, Lussier B, Urade Y, Benderdour M, Pelletier JP, Martel-Pelletier J, Fahmi H. L-PGDS deficiency accelerated the development of naturally occurring age-related osteoarthritis. Aging (Albany NY) 2020; 12:24778-24797. [PMID: 33361529 PMCID: PMC7803483 DOI: 10.18632/aging.202367] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/03/2020] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is the most common musculoskeletal disorder among the elderly. It is characterized by progressive cartilage degradation, synovial inflammation, subchondral bone remodeling and pain. Lipocalin prostaglandin D synthase (L-PGDS) is responsible for the biosynthesis of PGD2, which has been implicated in the regulation of inflammation and cartilage biology. This study aimed to evaluate the effect of L-PGDS deficiency on the development of naturally occurring age-related OA in mice. OA-like structural changes were assessed by histology, immunohistochemistry, and micro–computed tomography. Pain related behaviours were assessed using the von Frey and the open-field assays. L-PGDS deletion promoted cartilage degradation during aging, which was associated with enhanced expression of extracellular matrix degrading enzymes, matrix metalloprotease 13 (MMP-13) and a disintegrin and metalloproteinase with thrombospondin motifs 5 (ADAMTS-5), and their breakdown products, C1,2C, VDIPEN and NITEG. Moreover, L-PGDS deletion enhanced subchondral bone changes, but had no effect on its angiogenesis. Additionally, L-PGDS deletion increased mechanical sensitivity and reduced spontaneous locomotor activity. Finally, we showed that the expression of L-PGDS was elevated in aged mice. Together, these findings indicate an important role for L-PGDS in naturally occurring age-related OA. They also suggest that L-PGDS may constitute a new efficient therapeutic target in OA.
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Affiliation(s)
- Yassine Ouhaddi
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), and Department of Medicine, University of Montreal, Montreal, QC H2X 0A9, Canada
| | - Mehdi Najar
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), and Department of Medicine, University of Montreal, Montreal, QC H2X 0A9, Canada
| | - Frédéric Paré
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), and Department of Medicine, University of Montreal, Montreal, QC H2X 0A9, Canada
| | - Bertrand Lussier
- Faculty of Veterinary Medicine, Clinical Science, University of Montreal, Saint-Hyacinthe, QC, J2S 2M2, Canada
| | - Yoshihiro Urade
- Isotope Science Center, The University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
| | - Mohamed Benderdour
- Research Centre, Sacré-Coeur Hospital, University of Montreal, Montreal, QC H4J 1C5, Canada
| | - Jean-Pierre Pelletier
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), and Department of Medicine, University of Montreal, Montreal, QC H2X 0A9, Canada
| | - Johanne Martel-Pelletier
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), and Department of Medicine, University of Montreal, Montreal, QC H2X 0A9, Canada
| | - Hassan Fahmi
- Osteoarthritis Research Unit, University of Montreal Hospital Research Center (CRCHUM), and Department of Medicine, University of Montreal, Montreal, QC H2X 0A9, Canada
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13
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Li L, Lai EY, Cao X, Welch WJ, Wilcox CS. Endothelial prostaglandin D 2 opposes angiotensin II contractions in mouse isolated perfused intracerebral microarterioles. J Renin Angiotensin Aldosterone Syst 2020; 21:1470320320966177. [PMID: 33094663 PMCID: PMC7585895 DOI: 10.1177/1470320320966177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Hypothesis: A lack of contraction of cerebral microarterioles to Ang II (“resilience”) depends on cyclooxygenase (COX) and lipocalin type prostaglandin D sythase L-PGDS producing PGD2 that activates prostaglandin D type 1 receptors (DP1Rs) and nitric oxide synthase (NOS). Materials & Methods: Contractions were assessed in isolated, perfused vessels and NO by fluorescence microscopy. Results: The mRNAs of penetrating intraparenchymal cerebral microarterioles versus renal afferent arterioles were >3000-fold greater for L-PGDS and DP1R and 5-fold for NOS III and COX 2. Larger cerebral arteries contracted with Ang II. However, cerebral microarterioles were entirely unresponsive but contracted with endothelin 1 and perfusion pressure. Ang II contractions were evoked in cerebral microarterioles from COX1 –/– mice or after blockade of COX2, L-PGDS or NOS and in deendothelialized vessels but effects of deendothelialization were lost during COX blockade. NO generation with Ang II depended on COX and also was increased by DP1R activation. Conclusion: The resilience of cerebral arterioles to Ang II contractions is specific for intraparenchymal microarterioles and depends on endothelial COX1 and two products that are metabolized by L-PGDS to generate PGD2 that signals via DP1Rs and NO.
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Affiliation(s)
- L Li
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University, Washington DC, USA.,Kidney Disease Center, the First Affiliated Hospital and Department of Physiology, School of Basic Medical Science, Zhejiang University School of Medicine, Hangzhou, China
| | - E Y Lai
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University, Washington DC, USA.,Kidney Disease Center, the First Affiliated Hospital and Department of Physiology, School of Basic Medical Science, Zhejiang University School of Medicine, Hangzhou, China
| | - X Cao
- Kidney Disease Center, the First Affiliated Hospital and Department of Physiology, School of Basic Medical Science, Zhejiang University School of Medicine, Hangzhou, China
| | - W J Welch
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University, Washington DC, USA
| | - C S Wilcox
- Hypertension Center and Division of Nephrology and Hypertension, Georgetown University, Washington DC, USA
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14
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Lipocalin-type prostaglandin D synthase regulates light-induced phase advance of the central circadian rhythm in mice. Commun Biol 2020; 3:557. [PMID: 33033338 PMCID: PMC7544906 DOI: 10.1038/s42003-020-01281-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/03/2020] [Indexed: 12/20/2022] Open
Abstract
We previously showed that mice lacking pituitary adenylate cyclase-activating polypeptide (PACAP) exhibit attenuated light-induced phase shift. To explore the underlying mechanisms, we performed gene expression analysis of laser capture microdissected suprachiasmatic nuclei (SCNs) and found that lipocalin-type prostaglandin (PG) D synthase (L-PGDS) is involved in the impaired response to light stimulation in the late subjective night in PACAP-deficient mice. L-PGDS-deficient mice also showed impaired light-induced phase advance, but normal phase delay and nonvisual light responses. Then, we examined the receptors involved in the response and observed that mice deficient for type 2 PGD2 receptor DP2/CRTH2 (chemoattractant receptor homologous molecule expressed on Th2 cells) show impaired light-induced phase advance. Concordant results were observed using the selective DP2/CRTH2 antagonist CAY10471. These results indicate that L-PGDS is involved in a mechanism of light-induced phase advance via DP2/CRTH2 signaling. Kawaguchi et al. show that mice deficient in lipocalin-type prostaglandin (PG) D synthase (L-PGDS) exhibit impaired light-induced phase advance, but normal phase delay and nonvisual light responses. This study suggests the role of L-PGDS for the light-induced phase advance possibly via a chemoattractant receptor DP2/CRTH2.
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15
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Tanaka N, Kawai J, Hirasawa N, Mano N, Yamaguchi H. ATP-Binding Cassette Transporter C4 is a Prostaglandin D2 Exporter in HMC-1 cells. Prostaglandins Leukot Essent Fatty Acids 2020; 159:102139. [PMID: 32544819 DOI: 10.1016/j.plefa.2020.102139] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 05/11/2020] [Accepted: 05/25/2020] [Indexed: 01/07/2023]
Abstract
ATP-binding cassette transporter C4 (ABCC4) is associated with multidrug resistance and the regulation of cell signalling. Some prostaglandins (PGs), including: PGE2, PGF2α, PGE3, and PGF3α are known substrates of ABCC4, and are released from some types of cells to exert their biological effects. In the present study, we demonstrate that PGD2 is a novel substrate of ABCC4 using a transport assay based on inside-out membrane vesicles prepared from ABCC4-overexpressing cells. Then, we used two types of cell lines with confirmed ABCC4 mRNA and PGD2 release capacity (human mast cell lines HMC-1 cells and human rhabdomyosarcoma cell lines TE671 cells) to evaluate the contribution of ABCC4. The extracellular levels of PGD2 were unchanged following addition of a selective ABCC4 inhibitor in TE671 cells. Pharmacological inhibition and knockdown of ABCC4 significantly reduced the extracellular levels of PGD2 by at least 53% in HMC-1 cells. Moreover, the extracellular levels of PGD2 decreased by at least 20% using the selective ABCC4 inhibitor in the other mast cell line RBL-2H3 cells. Therefore, our results suggest that ABCC4 functions as a PGD2 exporter in HMC-1 cells.
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Affiliation(s)
- Nobuaki Tanaka
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - Junya Kawai
- Mushroom Research Laboratory, Hokuto Corporation, 800-8, Shimokomazawa, Nagano, 381-0008, Japan; Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - Noriyasu Hirasawa
- Laboratory of Pharmacotherapy of Life-Style Related Diseases, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan
| | - Nariyasu Mano
- Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Miyagi, 980-8578, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Miyagi, 980-8574, Japan
| | - Hiroaki Yamaguchi
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Miyagi, 980-8574, Japan; Department of Pharmacy, Yamagata University Hospital, Yamagata, 990-9585, Japan.
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16
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GGA3 interacts with L-type prostaglandin D synthase and regulates the recycling and signaling of the DP1 receptor for prostaglandin D2 in a Rab4-dependent mechanism. Cell Signal 2020; 72:109641. [DOI: 10.1016/j.cellsig.2020.109641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/15/2020] [Accepted: 04/15/2020] [Indexed: 12/21/2022]
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17
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Najar M, Ouhaddi Y, Paré F, Lussier B, Urade Y, Kapoor M, Pelletier JP, Martel-Pelletier J, Benderdour M, Fahmi H. Role of Lipocalin-Type Prostaglandin D Synthase in Experimental Osteoarthritis. Arthritis Rheumatol 2020; 72:1524-1533. [PMID: 32336048 DOI: 10.1002/art.41297] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 04/21/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Lipocalin-type prostaglandin D synthase (L-PGDS) catalyzes the formation of prostaglandin D2 (PGD2 ), which has important roles in inflammation and cartilage metabolism. We undertook this study to investigate the role of L-PGDS in the pathogenesis of osteoarthritis (OA) using an experimental mouse model. METHODS Experimental OA was induced in wild-type (WT) and L-PGDS-deficient (L-PGDS-/- ) mice (n = 10 per genotype) by destabilization of the medial meniscus (DMM). Cartilage degradation was evaluated by histology. The expression of matrix metalloproteinase 13 (MMP-13) and ADAMTS-5 was assessed by immunohistochemistry. Bone changes were determined by micro-computed tomography. Cartilage explants from L-PGDS-/- and WT mice (n = 6 per genotype) were treated with interleukin-1α (IL-1α) ex vivo in order to evaluate proteoglycan degradation. Moreover, the effect of intraarticular injection of a recombinant adeno-associated virus type 2/5 (rAAV2/5) encoding L-PGDS on OA progression was evaluated in WT mice (n = 9 per group). RESULTS Compared to WT mice, L-PGDS-/- mice had exacerbated cartilage degradation and enhanced expression of MMP-13 and ADAMTS-5 (P < 0.05). Furthermore, L-PGDS-/- mice displayed increased synovitis and subchondral bone changes (P < 0.05). Cartilage explants from L-PGDS-/- mice showed enhanced proteoglycan degradation following treatment with IL-1α (P < 0.05). Intraarticular injection of rAAV2/5 encoding L-PGDS attenuated the severity of DMM-induced OA-like changes in WT mice (P < 0.05). The L-PGDS level was increased in OA tissues of WT mice (P < 0.05). CONCLUSION Collectively, these findings suggest a protective role of L-PGDS in OA, and therefore enhancing levels of L-PGDS may constitute a promising therapeutic strategy.
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Affiliation(s)
- Mehdi Najar
- University of Montreal Hospital Research Center and University of Montreal, Montreal, Quebec, Canada
| | - Yassine Ouhaddi
- University of Montreal Hospital Research Center and University of Montreal, Montreal, Quebec, Canada
| | - Frédéric Paré
- University of Montreal Hospital Research Center and University of Montreal, Montreal, Quebec, Canada
| | | | | | - Mohit Kapoor
- The Toronto Western Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Jean-Pierre Pelletier
- University of Montreal Hospital Research Center and University of Montreal, Montreal, Quebec, Canada
| | - Johanne Martel-Pelletier
- University of Montreal Hospital Research Center and University of Montreal, Montreal, Quebec, Canada
| | | | - Hassan Fahmi
- University of Montreal Hospital Research Center and University of Montreal, Montreal, Quebec, Canada
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18
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Lee C, Kim MI, Park J, Kim J, Oh H, Cho Y, Son J, Jeon BY, Ka H, Hong M. Crystal structure of the Pseudomonas aeruginosa PA0423 protein and its functional implication in antibiotic sequestration. Biochem Biophys Res Commun 2020; 528:85-91. [PMID: 32451086 DOI: 10.1016/j.bbrc.2020.05.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 05/04/2020] [Indexed: 01/06/2023]
Abstract
Pseudomonas aeruginosa is a widely found opportunistic pathogen. The emergence of multidrug-resistant strains and persistent chronic infections have increased. The protein encoded by the pa0423 gene in P. aeruginosa is proposed to be critical for pathogenesis and could be a virulence-promoting protease or a bacterial lipocalin that binds a lipid-like antibiotic for drug resistance. Although two functions of proteolysis and antibiotic resistance are mutually related to bacterial survival in the host, it is very unusual for a single-domain protein to target unrelated ligand molecules such as protein substrates and lipid-like antibiotics. To clearly address the biological role of the PA0423 protein, we performed structural and biochemical studies. We found that PA0423 adopts a single-domain β-barrel structure and belongs to the lipocalin family. The PA0423 structure houses an internal tubular cavity, which accommodates a ubiquinone-8 molecule. Furthermore, we reveal that PA0423 can directly interact with the polymyxin B antibiotic using the internal cavity, suggesting that PA0423 has a physiological function in the antibiotic resistance of P. aeruginosa.
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Affiliation(s)
- Choongdeok Lee
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea
| | - Meong Il Kim
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea
| | - Jaewan Park
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea
| | - Junghun Kim
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea
| | - Hansol Oh
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea
| | - Yoeseph Cho
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea; Department of Microbiology and Immunology, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Junghyun Son
- Doping Control Center, Korea Institute of Science and Technology, Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul 02792, Republic of Korea; Department of Biological Chemistry, Korea University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Bo-Young Jeon
- Department of Biomedical Laboratory Science, Yonsei University, Wonju, 26493, Republic of Korea
| | - Hakhyun Ka
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea
| | - Minsun Hong
- Division of Biological Science and Technology, Yonsei University, Wonju 26493, Republic of Korea.
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19
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Nango H, Kosuge Y, Yoshimura N, Miyagishi H, Kanazawa T, Hashizaki K, Suzuki T, Ishige K. The Molecular Mechanisms Underlying Prostaglandin D 2-Induced Neuritogenesis in Motor Neuron-Like NSC-34 Cells. Cells 2020; 9:E934. [PMID: 32290308 PMCID: PMC7226968 DOI: 10.3390/cells9040934] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 04/04/2020] [Accepted: 04/08/2020] [Indexed: 12/28/2022] Open
Abstract
Prostaglandins are a group of physiologically active lipid compounds derived from arachidonic acid. Our previous study has found that prostaglandin E2 promotes neurite outgrowth in NSC-34 cells, which are a model for motor neuron development. However, the effects of other prostaglandins on neuronal differentiation are poorly understood. The present study investigated the effect of prostaglandin D2 (PGD2) on neuritogenesis in NSC-34 cells. Exposure to PGD2 resulted in increased percentages of neurite-bearing cells and neurite length. Although D-prostanoid receptor (DP) 1 and DP2 were dominantly expressed in the cells, BW245C (a DP1 agonist) and 15(R)-15-methyl PGD2 (a DP2 agonist) had no effect on neurite outgrowth. Enzyme-linked immunosorbent assay demonstrated that PGD2 was converted to 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) under cell-free conditions. Exogenously applied 15d-PGJ2 mimicked the effect of PGD2 on neurite outgrowth. GW9662, a peroxisome proliferator-activated receptor-gamma (PPARγ) antagonist, suppressed PGD2-induced neurite outgrowth. Moreover, PGD2 and 15d-PGJ2 increased the protein expression of Islet-1 (the earliest marker of developing motor neurons), and these increases were suppressed by co-treatment with GW9662. These results suggest that PGD2 induces neuritogenesis in NSC-34 cells and that PGD2-induced neurite outgrowth was mediated by the activation of PPARγ through the metabolite 15d-PGJ2.
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Affiliation(s)
- Hiroshi Nango
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Yasuhiro Kosuge
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Nana Yoshimura
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Hiroko Miyagishi
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Takanori Kanazawa
- Laboratory of Pharmaceutics, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Kaname Hashizaki
- Laboratory of Physical Chemistry, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Toyofumi Suzuki
- Laboratory of Pharmaceutics, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
| | - Kumiko Ishige
- Laboratory of Pharmacology, School of Pharmacy, Nihon University, 7-7-1 Narashinodai, Funabashi-shi, Chiba 274-8555, Japan
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20
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Suzuki N, Ko-Mitamura EP, Inui T, Terada T, Dejima K, Nagata N, Urade Y, Kawata R. Steroids Inhibit Eosinophil Accumulation and Downregulate Hematopoietic Chemotaxic Prostaglandin D 2 Receptor in Aspirin-Exacerbated Respiratory Disease. EAR, NOSE & THROAT JOURNAL 2020; 100:738S-745S. [PMID: 32077309 DOI: 10.1177/0145561320902858] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Aspirin-exacerbated respiratory disease (AERD) is characterized by eosinophilic rhinosinusitis, nasal polyposis, aspirin sensitivity, and asthma. Aims/Objectives: This study aims to identify a mechanism to target for the future treatment of AERD via the elucidation of the effect of systemic steroids on the expression of hematopoietic prostaglandin D2 synthase (HPGDS) and chemotaxic prostaglandin D2 (DP2) receptor relative to eosinophil activation in the nasal polyps of patients with AERD. MATERIALS AND METHODS Among 37 patients undergoing endoscopic sinus surgery, 28 received systemic steroids preoperatively. Nasal polyps were harvested from all 37 patients. After routine processing of paraffin sections, immunohistochemistry was performed using specific antibodies for HPGDS, eosinophil peroxidase (EPX), and DP2. RESULTS Expression of HPGDS, DP2, and EPX by eosinophils was higher and more frequent in patients with non-preoperative steroid therapy. Likewise, HPGDS and DP2 were highly expressed in activated eosinophils in the nasal polyps, but not in normal eosinophils. CONCLUSION AND SIGNIFICANCE This study provides clear evidence that systemic steroid therapy inhibits eosinophil activation and decreases HPGDS and DP2 expression in patients with AERD, indicating a reduction in prostaglandin D2 production and hence control hyperplasia of nasal polyps.
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Affiliation(s)
- Norio Suzuki
- Department of Otolaryngology, Head and Neck Surgery, Osaka Medical College, Osaka, Japan
| | - Elizabeth P Ko-Mitamura
- Department of Animal Radiology and Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Takaki Inui
- Department of Otolaryngology, Head and Neck Surgery, Osaka Medical College, Osaka, Japan
| | - Tetsuya Terada
- Department of Otolaryngology, Head and Neck Surgery, Osaka Medical College, Osaka, Japan
| | - Kenji Dejima
- Department of Otolaryngology, Kyoto Second Red Cross Hospital, Kyoto, Japan
| | - Nanae Nagata
- Department of Animal Radiology and Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo, Japan
| | | | - Ryo Kawata
- Department of Otolaryngology, Head and Neck Surgery, Osaka Medical College, Osaka, Japan
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21
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Jang Y, Kim M, Hwang SW. Molecular mechanisms underlying the actions of arachidonic acid-derived prostaglandins on peripheral nociception. J Neuroinflammation 2020; 17:30. [PMID: 31969159 PMCID: PMC6975075 DOI: 10.1186/s12974-020-1703-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 01/06/2020] [Indexed: 12/30/2022] Open
Abstract
Arachidonic acid-derived prostaglandins not only contribute to the development of inflammation as intercellular pro-inflammatory mediators, but also promote the excitability of the peripheral somatosensory system, contributing to pain exacerbation. Peripheral tissues undergo many forms of diseases that are frequently accompanied by inflammation. The somatosensory nerves innervating the inflamed areas experience heightened excitability and generate and transmit pain signals. Extensive studies have been carried out to elucidate how prostaglandins play their roles for such signaling at the cellular and molecular levels. Here, we briefly summarize the roles of arachidonic acid-derived prostaglandins, focusing on four prostaglandins and one thromboxane, particularly in terms of their actions on afferent nociceptors. We discuss the biosynthesis of the prostaglandins, their specific action sites, the pathological alteration of the expression levels of related proteins, the neuronal outcomes of receptor stimulation, their correlation with behavioral nociception, and the pharmacological efficacy of their regulators. This overview will help to a better understanding of the pathological roles that prostaglandins play in the somatosensory system and to a finding of critical molecular contributors to normalizing pain.
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Affiliation(s)
- Yongwoo Jang
- Department of Psychiatry and Program in Neuroscience, McLean Hospital, Harvard Medical School, Belmont, MA, 02478, USA.,Department of Biomedical Engineering, Hanyang University, Seoul, 04763, South Korea
| | - Minseok Kim
- Department of Biomedical Sciences, Korea University, Seoul, 02841, South Korea
| | - Sun Wook Hwang
- Department of Biomedical Sciences, Korea University, Seoul, 02841, South Korea. .,Department of Physiology, College of Medicine, Korea University, Seoul, 02841, South Korea.
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22
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Gladine C, Ostermann AI, Newman JW, Schebb NH. MS-based targeted metabolomics of eicosanoids and other oxylipins: Analytical and inter-individual variabilities. Free Radic Biol Med 2019; 144:72-89. [PMID: 31085232 DOI: 10.1016/j.freeradbiomed.2019.05.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 04/19/2019] [Accepted: 05/10/2019] [Indexed: 02/07/2023]
Abstract
Oxylipins, including the well-known eicosanoids, are potent lipid mediators involved in numerous physiological and pathological processes. Therefore, their quantitative profiling has gained a lot of attention during the last years notably in the active field of health biomarker discovery. Oxylipins include hundreds of structurally and stereochemically distinct lipid species which today are most commonly analyzed by (ultra) high performance liquid chromatography-mass spectrometry based ((U)HPLC-MS) methods. To maximize the utility of oxylipin profiling in clinical research, it is crucial to understand and assess the factors contributing to the analytical and biological variability of oxylipin profiles in humans. In this review, these factors and their impacts are summarized and discussed, providing a framework for recommendations expected to enhance the interlaboratory comparability and biological interpretation of oxylipin profiling in clinical research.
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Affiliation(s)
- Cécile Gladine
- Université Clermont Auvergne, INRA, UNH, Unité de Nutrition Humaine, CRNH Auvergne, Clermont-Ferrand, France.
| | - Annika I Ostermann
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, Gaußstraße 20, University of Wuppertal, 42119, Wuppertal, Germany
| | - John W Newman
- United States Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA, USA; University of California Davis, Department of Nutrition, Davis, CA, USA
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, Gaußstraße 20, University of Wuppertal, 42119, Wuppertal, Germany
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23
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Pathophysiological role of prostanoids in coagulation of the portal venous system in liver cirrhosis. PLoS One 2019; 14:e0222840. [PMID: 31644538 PMCID: PMC6808498 DOI: 10.1371/journal.pone.0222840] [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: 07/09/2019] [Accepted: 09/08/2019] [Indexed: 12/15/2022] Open
Abstract
Background Prostanoids are important regulators of platelet aggregation and thrombotic arterial diseases. Their involvement in the development of portal vein thrombosis, frequent in decompensated liver cirrhosis, is still not investigated. Methods Therefore, we used pro-thrombotic venous milieu generation by bare metal stent transjugular intrahepatic portosystemic shunt insertion, to study the role of prostanoids in decompensated liver cirrhosis. Here, 89 patients receiving transjugular intrahepatic portosystemic shunt insertion were included in the study, and baseline levels of thromboxane B2, prostaglandin D2 and prostaglandin E2 were measured in the portal and the hepatic vein. Results While the hepatic vein contained higher levels of thromboxane B2 than the portal vein, levels of prostaglandin E2 and D2 were higher in the portal vein (all P<0.0001). Baseline concentrations of thromboxane B2 in the portal vein were independently associated with an increase of portal hepatic venous pressure gradient during short term follow-up, as an indirect sign of thrombogenic potential (multivariable P = 0.004). Moreover, severity of liver disease was inversely correlated with portal as well as hepatic vein levels of prostaglandin D2 and E2 (all P<0.0001). Conclusions Elevated portal venous thromboxane B2 concentrations are possibly associated with the extent of thrombogenic potential in patients with decompensated liver cirrhosis. Trial registration ClinicalTrials.gov identifier: NCT03584204.
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24
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Binda C, Génier S, Degrandmaison J, Picard S, Fréchette L, Jean S, Marsault E, Parent JL. L-type prostaglandin D synthase regulates the trafficking of the PGD 2 DP1 receptor by interacting with the GTPase Rab4. J Biol Chem 2019; 294:16865-16883. [PMID: 31575663 DOI: 10.1074/jbc.ra119.008233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 09/27/2019] [Indexed: 12/28/2022] Open
Abstract
Accumulating evidence indicates that G protein-coupled receptors (GPCRs) interact with Rab GTPases during their intracellular trafficking. How GPCRs recruit and activate the Rabs is unclear. Here, we report that depletion of endogenous L-type prostaglandin D synthase (L-PGDS) in HeLa cells inhibited recycling of the prostaglandin D2 (PGD2) DP1 receptor (DP1) to the cell surface after agonist-induced internalization and that L-PGDS overexpression had the opposite effect. Depletion of endogenous Rab4 prevented l-PGDS-mediated recycling of DP1, and l-PGDS depletion inhibited Rab4-dependent recycling of DP1, indicating that both proteins are mutually involved in this pathway. DP1 stimulation promoted its interaction through its intracellular C terminus with Rab4, which was increased by l-PGDS. Confocal microscopy revealed that DP1 activation induces l-PGDS/Rab4 co-localization. l-PGDS/Rab4 and DP1/Rab4 co-immunoprecipitation levels were increased by DP1 agonist treatment. Pulldown assays with purified GST-l-PGDS and His6-Rab4 indicated that both proteins interact directly. l-PGDS interacted preferentially with the inactive, GDP-locked Rab4S22N variant rather than with WT Rab4 or with constitutively active Rab4Q67L proteins. Overexpression and depletion experiments disclosed that l-PGDS partakes in Rab4 activation following DP1 stimulation. Experiments with deletion mutants and synthetic peptides revealed that amino acids 85-92 in l-PGDS are involved in its interaction with Rab4 and in its effect on DP1 recycling. Of note, GTPγS loading and time-resolved FRET assays with purified proteins suggested that l-PGDS enhances GDP-GTP exchange on Rab4. Our results reveal how l-PGDS, which produces the agonist for DP1, regulates DP1 recycling by participating in Rab4 recruitment and activation.
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Affiliation(s)
- Chantal Binda
- Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Samuel Génier
- Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Jade Degrandmaison
- Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Samuel Picard
- Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Louis Fréchette
- Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Steve Jean
- Département d'Anatomie et de Biologie Cellulaire, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Eric Marsault
- Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada.,Département de Pharmacologie-Physiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
| | - Jean-Luc Parent
- Département de Médecine, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada .,Institut de Pharmacologie de Sherbrooke, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Québec J1H 5N4, Canada
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25
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A Parkinson's disease gene, DJ-1, regulates anti-inflammatory roles of astrocytes through prostaglandin D2 synthase expression. Neurobiol Dis 2019; 127:482-491. [DOI: 10.1016/j.nbd.2019.04.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/07/2019] [Accepted: 04/03/2019] [Indexed: 01/24/2023] Open
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26
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Expression of prostaglandin (PG) D synthase lipocalin and hematopoietic type and PG D receptor during restart of spermatogenesis following downregulation using a slow release GnRH agonist implant in the dog. Cell Tissue Res 2019; 378:359-370. [PMID: 31256286 DOI: 10.1007/s00441-019-03059-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 06/14/2019] [Indexed: 01/30/2023]
Abstract
Prostaglandin D and the associated prostaglandin D synthases (PGDS) and receptor (DP) are considered to be involved in spermatogenesis. However, the interplay of the PGDS-DP system in male reproduction is far from being understood. The expression of PGDS lipocalin (L) and hematopoietic (H) type and DP was studied in the GnRH agonist-downregulated canine testis (week, w 0) and during recrudescence of spermatogenesis after implant removal (w 3, 6, 9, 12). H-PGDS, L-PGDS and DP were present in the adult (CG), juvenile (JG) and downregulated canine testis at the mRNA level. PGDS immunohistochemistry revealed positive staining in the cytoplasm of Leydig cells (LCs) of all samples i.e., no difference between groups. mRNA expression (ratio) of L-, H-PGDS and DP did not differ between groups w 0-12 and CG. In contrast, significant differences were found for L-PGDS (p = 0.0388), H-PGDS (p < 0.001) and DP (p < 0.001) for the groups at downregulation (w0, suprelorin group, SG, profact group, PRG) compared with the control groups (JG, CG). L-PGDS expression was lowest in JG, whereas H-PGDS was significantly lower in CG compared with JG and at downregulation (p < 0.001 to p < 0.01). The highest ratio for H-PGDS and DP was observed in the dogs treated with buserelin acetate (PRG). Our data show that the PGDS-DP system is expressed in juvenile and adult canine testes and that downregulation of the testicular endocrine and germinative function significantly affects H-PGDS, L-PGDS and DP mRNA expression indicating a role in the regulation of spermatogenesis.
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27
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Therapeutic Potential of Hematopoietic Prostaglandin D 2 Synthase in Allergic Inflammation. Cells 2019; 8:cells8060619. [PMID: 31226822 PMCID: PMC6628301 DOI: 10.3390/cells8060619] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 06/12/2019] [Accepted: 06/19/2019] [Indexed: 12/15/2022] Open
Abstract
Worldwide, there is a rise in the prevalence of allergic diseases, and novel efficient therapeutic approaches are still needed to alleviate disease burden. Prostaglandin D2 (PGD2) has emerged as a central inflammatory lipid mediator associated with increased migration, activation and survival of leukocytes in various allergy-associated disorders. In the periphery, the hematopoietic PGD synthase (hPGDS) acts downstream of the arachidonic acid/COX pathway catalysing the isomerisation of PGH2 to PGD2, which makes it an interesting target to treat allergic inflammation. Although much effort has been put into developing efficient hPGDS inhibitors, no compound has made it to the market yet, which indicates that more light needs to be shed on potential PGD2 sources and targets to determine which particular condition and patient will benefit most and thereby improve therapeutic efficacy. In this review, we want to revisit current knowledge about hPGDS function, expression in allergy-associated cell types and their contribution to PGD2 levels as well as beneficial effects of hPGDS inhibition in allergic asthma, rhinitis, atopic dermatitis, food allergy, gastrointestinal allergic disorders and anaphylaxis.
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28
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Ahmad AS, Ottallah H, Maciel CB, Strickland M, Doré S. Role of the L-PGDS-PGD2-DP1 receptor axis in sleep regulation and neurologic outcomes. Sleep 2019; 42:zsz073. [PMID: 30893431 PMCID: PMC6559173 DOI: 10.1093/sleep/zsz073] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/16/2019] [Indexed: 12/18/2022] Open
Abstract
To meet the new challenges of modern lifestyles, we often compromise a good night's sleep. In preclinical models as well as in humans, a chronic lack of sleep is reported to be among the leading causes of various physiologic, psychologic, and neurocognitive deficits. Thus far, various endogenous mediators have been implicated in inter-regulatory networks that collectively influence the sleep-wake cycle. One such mediator is the lipocalin-type prostaglandin D2 synthase (L-PGDS)-Prostaglandin D2 (PGD2)-DP1 receptor (L-PGDS-PGD2-DP1R) axis. Findings in preclinical models confirm that DP1R are predominantly expressed in the sleep-regulating centers. This finding led to the discovery that the L-PGDS-PGD2-DP1R axis is involved in sleep regulation. Furthermore, we showed that the L-PGDS-PGD2-DP1R axis is beneficial in protecting the brain from ischemic stroke. Protein sequence homology was also performed, and it was found that L-PGDS and DP1R share a high degree of homology between humans and rodents. Based on the preclinical and clinical data thus far pertaining to the role of the L-PGDS-PGD2-DP1R axis in sleep regulation and neurologic conditions, there is optimism that this axis may have a high translational potential in human therapeutics. Therefore, here the focus is to review the regulation of the homeostatic component of the sleep process with a special focus on the L-PGDS-PGD2-DP1R axis and the consequences of sleep deprivation on health outcomes. Furthermore, we discuss whether the pharmacological regulation of this axis could represent a tool to prevent sleep disturbances and potentially improve outcomes, especially in patients with acute brain injuries.
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Affiliation(s)
- Abdullah Shafique Ahmad
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL
- McKnight Brain Institute, University of Florida, Gainesville, FL
| | - Haneen Ottallah
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL
- McKnight Brain Institute, University of Florida, Gainesville, FL
| | - Carolina B Maciel
- Department of Neurology, University of Florida College of Medicine, Gainesville, FL
| | - Michael Strickland
- Division of Biology and Biomedical Sciences, Washington University in Saint Louis, Saint Louis, MO
| | - Sylvain Doré
- Department of Anesthesiology, University of Florida College of Medicine, Gainesville, FL
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, FL
- McKnight Brain Institute, University of Florida, Gainesville, FL
- Department of Psychiatry, University of Florida, Gainesville, FL
- Department of Pharmaceutics, University of Florida, Gainesville, FL
- Department of Psychology, University of Florida, Gainesville, FL
- Department of Neuroscience, University of Florida, Gainesville, FL
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29
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Xiong Z, Luo P, Zhou J, Tan M. 15-Deoxy-Δ 12,14-prostaglandin J 2 as a potential regulator of bone metabolism via PPARγ-dependent and independent pathways: a review. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:1879-1888. [PMID: 31213775 PMCID: PMC6549764 DOI: 10.2147/dddt.s206695] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 05/10/2019] [Indexed: 12/18/2022]
Abstract
Bone metabolism is a complex physiological process that primarily involves osteoblast-mediated bone formation and osteoclast-mediated bone resorption, both of which are regulated by a variety of biological factors. There is increasing evidence that peroxisome proliferator-activated receptor γ (PPARγ) is a member of the nuclear receptor superfamily and plays an important role in lipid metabolism and bone metabolism. Through the PPARγ-dependent pathway, 15-deoxy-Δ12,14-prostaglandin J2 (15d-PGJ2) promotes the formation of marrow adipocytes and inhibits the formation of osteoblasts, resulting in bone loss and increasing the risk of fracture and osteoporosis. Recent studies have found that through the PPARγ-independent pathway, 15d-PGJ2 plays a regulatory role in bone metastasis of breast cancer, which can inhibit osteoclastogenesis and reduce bone destruction. The purpose of our review is to summarize the recent progress in elucidating the mechanisms and effects of 15d-PGJ2 in bone metabolism, which can serve as a novel therapeutic target for bone tumors, osteoporosis, rheumatoid arthritis (RA), and other bone diseases.
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Affiliation(s)
- Zhencheng Xiong
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China.,Department of Spine Surgery, China-Japan Friendship Hospital, Beijing, People's Republic of China
| | - Pan Luo
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Jun Zhou
- Department of Spine Surgery, China-Japan Friendship Hospital, Beijing, People's Republic of China.,School of Clinical Medicine, Graduate School of Beijing University of Chinese Medicine, Beijing, People's Republic of China
| | - Mingsheng Tan
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China.,Department of Spine Surgery, China-Japan Friendship Hospital, Beijing, People's Republic of China.,School of Clinical Medicine, Graduate School of Beijing University of Chinese Medicine, Beijing, People's Republic of China
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30
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Yeh YN, Hsin KY, Zimmer A, Lin LY, Hung MS. A structure-function approach identifies L-PGDS as a mediator responsible for glucocorticoid-induced leptin expression in adipocytes. Biochem Pharmacol 2019; 166:203-211. [PMID: 31129049 DOI: 10.1016/j.bcp.2019.05.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Accepted: 05/21/2019] [Indexed: 02/01/2023]
Abstract
Leptin is an adipokine predominantly secreted by adipocytes and has many physiological roles, including in energy homeostasis. We identified that AM630, a cannabinoid receptor 2 (CB2) antagonist, down-regulated leptin expression in mature adipocytes differentiated from either stromal vascular fractions isolated from inguinal fat pads of C57BL/6J mice or 3T3-L1 preadipocytes. However, the leptin-suppressive effects of AM630 preserved in CB2-deficient adipocytes indicated the off-target activity of AM630 in leptin expression. Pharmacological and genetic studies, cheminformatics, and docking simulation were applied to identify the potential protein target of AM630 that modulates leptin expression in differentiated primary preadipocytes. Screening of the reported off-targets of AM630 identified a synthetic cannabinoid WIN55212-2 exerting the same function. Target deconvolution and docking simulation suggested that AM630 and WIN55212-2 were both inhibitors of lipocalin-type prostaglandin D2 synthase (L-PGDS). Further studies showed that L-PGDS positively regulates leptin expression. Although glucocorticoid and aldosterone were previously reported to induce expression of both L-PGDS and leptin, our data demonstrated that L-PGDS mediates only glucocorticoid-induced leptin expression in differentiated primary preadipocytes. No effect was observed after aldosterone treatment. This newly discovered glucocorticoid - L-PGDS - leptin pathway may provide insights into current clinical use of glucocorticoid and management of their undesired effects such as obesity.
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Affiliation(s)
- Yen-Nan Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli 35053, Taiwan; Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Kun-Yi Hsin
- Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0496, Japan; Department of Animal Science, National Chung Hsing University, Taichung 40227, Taiwan
| | - Andreas Zimmer
- Institute for Molecular Psychiatry, University of Bonn, 53113 Bonn, Germany
| | - Lih-Yuan Lin
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Ming-Shiu Hung
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli 35053, Taiwan.
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31
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Oliver ET, Chichester K, Devine K, Sterba PM, Wegner C, Vonakis BM, Saini SS. Effects of an Oral CRTh2 Antagonist (AZD1981) on Eosinophil Activity and Symptoms in Chronic Spontaneous Urticaria. Int Arch Allergy Immunol 2019; 179:21-30. [PMID: 30879003 DOI: 10.1159/000496162] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 12/11/2018] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Approximately 50% of patients with chronic spontaneous urticaria (CSU) experience symptoms that are not fully controlled by antihistamines, indicating an unmet clinical need. OBJECTIVE To evaluate the effects of the selective CRTh2 antagonist AZD1981 on symptoms and targeted leukocytes in adults with persistent CSU despite treatment with H1-antihistamines. METHODS We performed a single-center, randomized, placebo-controlled study involving adult CSU subjects with symptoms despite daily antihistamines. The subjects underwent a 2-week placebo run-in and 4 weeks of double-blinded therapy with either AZD1981 40 mg TID or placebo, followed by a 2-week placebo washout. The primary objective was to assess the effect of AZD1981 on CSU signs and symptoms. Secondary objectives included the effects of AZD1981 on prostaglandin D2 (PGD2)-induced eosinophil shape change, circulating leukocyte subsets, CRTh2 expression on blood leukocytes, and total blood leukocyte histamine content. RESULTS Twenty-eight subjects were randomized to AZD1981 or placebo, with 26 subjects completing the study. The urticaria activity scores declined during the treatment phase in both groups, and they were significantly reduced in the AZD1981 group at the end of washout. AZD1981 treatment increased circulating eosinophils and significantly impaired PGD2-mediated eosinophil shape change. CRTh2 surface expression rose significantly on blood basophils during active treatment. No serious adverse events were observed. CONCLUSIONS This is the first study to examine the efficacy of a CRTh2 antagonist in antihistamine-refractory CSU. AZD1981 treatment was well tolerated, effectively inhibited PGD2-mediated eosinophil shape change, shifted numbers of circulating eosinophils, and reduced weekly itch scores more than hives during treatment and into washout. Further studies are needed to determine whether inhibition of the PGD2/CRTh2 pathway will be an -effective treatment for CSU.
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Affiliation(s)
- Eric Tyrell Oliver
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA,
| | - Kris Chichester
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Kelly Devine
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Patricia Meghan Sterba
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Craig Wegner
- Scientific Partnering and Alliances, IMED Biotech Unit, AstraZeneca, Boston, Massachusetts, USA
| | - Becky Marie Vonakis
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sarbjit Singh Saini
- Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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L-PGDS-produced PGD 2 in premature, but not in mature, adipocytes increases obesity and insulin resistance. Sci Rep 2019; 9:1931. [PMID: 30760783 PMCID: PMC6374461 DOI: 10.1038/s41598-018-38453-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 12/28/2018] [Indexed: 12/12/2022] Open
Abstract
Lipocalin-type prostaglandin (PG) D synthase (L-PGDS) is responsible for the production of PGD2 in adipocytes and is selectively induced by a high-fat diet (HFD) in adipose tissue. In this study, we investigated the effects of HFD on obesity and insulin resistance in two distinct types of adipose-specific L-PGDS gene knockout (KO) mice: fatty acid binding protein 4 (fabp4, aP2)-Cre/L-PGDSflox/flox and adiponectin (AdipoQ)-Cre/L-PGDSflox/flox mice. The L-PGDS gene was deleted in adipocytes in the premature stage of the former strain and after maturation of the latter strain. The L-PGDS expression and PGD2 production levels decreased in white adipose tissue (WAT) under HFD conditions only in the aP2-Cre/L-PGDSflox/flox mice, but were unchanged in the AdipoQ-Cre/L-PGDSflox/flox mice. When fed an HFD, aP2-Cre/L-PGDSflox/flox mice significantly reduced body weight gain, adipocyte size, and serum cholesterol and triglyceride levels. In WAT of the HFD-fed aP2-Cre/L-PGDSflox/flox mice, the expression levels of the adipogenic, lipogenic, and M1 macrophage marker genes were decreased, whereas those of the lipolytic and M2 macrophage marker genes were enhanced or unchanged. Insulin sensitivity was improved in the HFD-fed aP2-Cre/L-PGDSflox/flox mice. These results indicate that PGD2 produced by L-PGDS in premature adipocytes is involved in the regulation of body weight gain and insulin resistance under nutrient-dense conditions.
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33
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Song WL, Ricciotti E, Liang X, Grosser T, Grant GR, FitzGerald GA. Lipocalin-Like Prostaglandin D Synthase but Not Hemopoietic Prostaglandin D Synthase Deletion Causes Hypertension and Accelerates Thrombogenesis in Mice. J Pharmacol Exp Ther 2018; 367:425-432. [PMID: 30305427 PMCID: PMC6226547 DOI: 10.1124/jpet.118.250936] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 09/17/2018] [Indexed: 12/13/2022] Open
Abstract
Prostaglandin (PG) D2 is formed by two distinct PGD synthases (PGDS): lipocalin-type PGDS (L-PGDS), which acts as a PGD2-producing enzyme and as extracellular lipophilic transporter, and hematopoietic PGDS (H-PGDS), a σ glutathione-S-transferase. PGD2 plays an important role in the maintenance of vascular function; however, the relative contribution of L-PGDS– and H-PGDS–dependent formation of PGD2 in this setting is unknown. To gain insight into the function played by these distinct PGDS, we assessed systemic blood pressure (BP) and thrombogenesis in L-Pgds and H-Pgds knockout (KO) mice. Deletion of L-Pgds depresses urinary PGD2 metabolite (PGDM) by ∼35%, whereas deletion of H-Pgds does so by ∼90%. Deletion of L-Pgds, but not H-Pgds, elevates BP and accelerates the thrombogenic occlusive response to a photochemical injury to the carotid artery. HQL-79, a H-PGDS inhibitor, further depresses PGDM in L-Pgds KO mice, but has no effect on BP or on the thrombogenic response. Gene expression profiling reveals that pathways relevant to vascular function are dysregulated in the aorta of L-Pgds KOs. These results indicate that the functional impact of L-Pgds deletion on vascular homeostasis may result from an autocrine effect of L-PGDS–dependent PGD2 on the vasculature and/or the L-PGDS function as lipophilic carrier protein.
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Affiliation(s)
- Wen-Liang Song
- Department of Systems Pharmacology and Translational Therapeutics (W.-L.S., E.R., X.L., T.G., G.A.F.), Institute for Translational Medicine and Therapeutics (W.-L.S., E.R., X.L., T.G., G.R.G., G.A.F.), and Perelman School of Medicine and Department of Genetics (G.R.G.), University of Pennsylvania, Philadelphia, Pennsylvania
| | - Emanuela Ricciotti
- Department of Systems Pharmacology and Translational Therapeutics (W.-L.S., E.R., X.L., T.G., G.A.F.), Institute for Translational Medicine and Therapeutics (W.-L.S., E.R., X.L., T.G., G.R.G., G.A.F.), and Perelman School of Medicine and Department of Genetics (G.R.G.), University of Pennsylvania, Philadelphia, Pennsylvania
| | - Xue Liang
- Department of Systems Pharmacology and Translational Therapeutics (W.-L.S., E.R., X.L., T.G., G.A.F.), Institute for Translational Medicine and Therapeutics (W.-L.S., E.R., X.L., T.G., G.R.G., G.A.F.), and Perelman School of Medicine and Department of Genetics (G.R.G.), University of Pennsylvania, Philadelphia, Pennsylvania
| | - Tilo Grosser
- Department of Systems Pharmacology and Translational Therapeutics (W.-L.S., E.R., X.L., T.G., G.A.F.), Institute for Translational Medicine and Therapeutics (W.-L.S., E.R., X.L., T.G., G.R.G., G.A.F.), and Perelman School of Medicine and Department of Genetics (G.R.G.), University of Pennsylvania, Philadelphia, Pennsylvania
| | - Gregory R Grant
- Department of Systems Pharmacology and Translational Therapeutics (W.-L.S., E.R., X.L., T.G., G.A.F.), Institute for Translational Medicine and Therapeutics (W.-L.S., E.R., X.L., T.G., G.R.G., G.A.F.), and Perelman School of Medicine and Department of Genetics (G.R.G.), University of Pennsylvania, Philadelphia, Pennsylvania
| | - Garret A FitzGerald
- Department of Systems Pharmacology and Translational Therapeutics (W.-L.S., E.R., X.L., T.G., G.A.F.), Institute for Translational Medicine and Therapeutics (W.-L.S., E.R., X.L., T.G., G.R.G., G.A.F.), and Perelman School of Medicine and Department of Genetics (G.R.G.), University of Pennsylvania, Philadelphia, Pennsylvania
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Piergiorge RM, de Miranda AB, Guimarães AC, Catanho M. Functional Analogy in Human Metabolism: Enzymes with Different Biological Roles or Functional Redundancy? Genome Biol Evol 2017; 9:1624-1636. [PMID: 28854631 PMCID: PMC5737724 DOI: 10.1093/gbe/evx119] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2017] [Indexed: 12/12/2022] Open
Abstract
Since enzymes catalyze almost all chemical reactions that occur in living organisms, it is crucial that genes encoding such activities are correctly identified and functionally characterized. Several studies suggest that the fraction of enzymatic activities in which multiple events of independent origin have taken place during evolution is substantial. However, this topic is still poorly explored, and a comprehensive investigation of the occurrence, distribution, and implications of these events has not been done so far. Fundamental questions, such as how analogous enzymes originate, why so many events of independent origin have apparently occurred during evolution, and what are the reasons for the coexistence in the same organism of distinct enzymatic forms catalyzing the same reaction, remain unanswered. Also, several isofunctional enzymes are still not recognized as nonhomologous, even with substantial evidence indicating different evolutionary histories. In this work, we begin to investigate the biological significance of the cooccurrence of nonhomologous isofunctional enzymes in human metabolism, characterizing functional analogous enzymes identified in metabolic pathways annotated in the human genome. Our hypothesis is that the coexistence of multiple enzymatic forms might not be interpreted as functional redundancy. Instead, these enzymatic forms may be implicated in distinct (and probably relevant) biological roles.
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Affiliation(s)
- Rafael Mina Piergiorge
- Laboratório de Genômica Funcional e Bioinformática, Fiocruz, Instituto Oswaldo Cruz, Manguinhos, Rio de Janeiro, Brazil
| | - Antonio Basílio de Miranda
- Laboratório de Biologia Computacional e Sistemas, Fiocruz, Instituto Oswaldo Cruz, Manguinhos, Rio de Janeiro, Brazil
| | - Ana Carolina Guimarães
- Laboratório de Genômica Funcional e Bioinformática, Fiocruz, Instituto Oswaldo Cruz, Manguinhos, Rio de Janeiro, Brazil
| | - Marcos Catanho
- Laboratório de Genômica Funcional e Bioinformática, Fiocruz, Instituto Oswaldo Cruz, Manguinhos, Rio de Janeiro, Brazil
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Physiological and Pathological Roles of 15-Deoxy-Δ12,14-Prostaglandin J2 in the Central Nervous System and Neurological Diseases. Mol Neurobiol 2017; 55:2227-2248. [DOI: 10.1007/s12035-017-0435-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Accepted: 02/03/2017] [Indexed: 12/29/2022]
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Kong D, Li J, Shen Y, Liu G, Zuo S, Tao B, Ji Y, Lu A, Lazarus M, Breyer RM, Yu Y. Niacin Promotes Cardiac Healing after Myocardial Infarction through Activation of the Myeloid Prostaglandin D 2 Receptor Subtype 1. J Pharmacol Exp Ther 2017; 360:435-444. [PMID: 28057839 DOI: 10.1124/jpet.116.238261] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 12/30/2016] [Indexed: 01/05/2023] Open
Abstract
Niacin is a well established drug used to lower cholesterol and prevent cardiovascular disease events. However, niacin also causes cutaneous flushing side effects due to release of the proresolution mediator prostaglandin D2 (PGD2). Recent randomized clinical trials have demonstrated that addition of niacin with laropiprant [a PGD2 receptor subtype 1 (DP1) blocker] to statin-based therapies does not significantly decrease the risk of cardiovascular disease events, but increases the risk of serious adverse events. Here, we tested whether, and how, niacin beneficial effects on myocardial ischemia require the activation of the PGD2/DP1 axis. Myocardial infarction (MI) was reproduced by ligation of the left anterior descending branch of the coronary artery in mice. We found that niacin increased PGD2 release in macrophages and shifted macrophages to M2 polarization both in vitro and in vivo by activation of DP1 and accelerated inflammation resolution in zymosan-induced peritonitis in mice. Moreover, niacin treatment facilitated wound healing and improved cardiac function after MI through DP1-mediated M2 bias and timely resolution of inflammation in infarcted hearts. In addition, we found that niacin intake also stimulated M2 polarization of peripheral monocytes in humans. Collectively, niacin promoted cardiac functional recovery after ischemic myocardial infarction through DP1-mediated M2 polarization and timely resolution of inflammation in hearts. These results indicated that DP1 inhibition may attenuate the cardiovascular benefits of niacin.
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Affiliation(s)
- Deping Kong
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Juanjuan Li
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Yujun Shen
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Guizhu Liu
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Shengkai Zuo
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Bo Tao
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Yong Ji
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Ankang Lu
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Michael Lazarus
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Richard M Breyer
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
| | - Ying Yu
- Department of Pharmacology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China (D.K., Y.S., Y.Y.); Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, University of Chinese Academy of Sciences, Shanghai, China (D.K., G.L., S.Z., B.T., Y.Y.); Department of Gastroenterology (J.L.), and Department of Cardiology (A.L.); Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; The Key Laboratory of Cardiovascular Disease and Molecular Intervention, Atherosclerosis Research Centre, Nanjing Medical University, Nanjing, Jiangsu, China (Y.J.); International Institute for Integrative, Sleep Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan (M.L.); and Department of Veterans Affairs, Tennessee Valley Health Authority, and Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee (R.M.B.)
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Meleza C, Thomasson B, Ramachandran C, O'Neill JW, Michelsen K, Lo MC. Development of a scintillation proximity binding assay for high-throughput screening of hematopoietic prostaglandin D2 synthase. Anal Biochem 2016; 511:17-23. [PMID: 27485270 DOI: 10.1016/j.ab.2016.07.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/25/2016] [Accepted: 07/28/2016] [Indexed: 01/22/2023]
Abstract
Prostaglandin D2 synthase (PGDS) catalyzes the isomerization of prostaglandin H2 (PGH2) to prostaglandin D2 (PGD2). PGD2 produced by hematopoietic prostaglandin D2 synthase (H-PGDS) in mast cells and Th2 cells is proposed to be a mediator of allergic and inflammatory responses. Consequently, inhibitors of H-PGDS represent potential therapeutic agents for the treatment of inflammatory diseases such as asthma. Due to the instability of the PGDS substrate PGH2, an in-vitro enzymatic assay is not feasible for large-scale screening of H-PGDS inhibitors. Herein, we report the development of a competition binding assay amenable to high-throughput screening (HTS) in a scintillation proximity assay (SPA) format. This assay was used to screen an in-house compound library of approximately 280,000 compounds for novel H-PGDS inhibitors. The hit rate of the H-PGDS primary screen was found to be 4%. This high hit rate suggests that the active site of H-PGDS can accommodate a large diversity of chemical scaffolds. For hit prioritization, these initial hits were rescreened at a lower concentration in SPA and tested in the LAD2 cell assay. 116 compounds were active in both assays with IC50s ranging from 6 to 807 nM in SPA and 82 nM to 10 μM in the LAD2 cell assay.
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Affiliation(s)
- Cesar Meleza
- Discovery Technologies, Amgen Inc., South San Francisco, CA 94080, USA
| | | | | | | | - Klaus Michelsen
- Discovery Attribute Sciences, Amgen Inc., Cambridge, MA 02141, USA
| | - Mei-Chu Lo
- Discovery Technologies, Amgen Inc., South San Francisco, CA 94080, USA.
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Figueiredo-Pereira ME, Corwin C, Babich J. Prostaglandin J2: a potential target for halting inflammation-induced neurodegeneration. Ann N Y Acad Sci 2016; 1363:125-37. [PMID: 26748744 DOI: 10.1111/nyas.12987] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Prostaglandins (PGs) are produced via cyclooxygenases, which are enzymes that play a major role in neuroinflammation. Epidemiological studies show that chronic treatment with low levels of cyclooxygenase inhibitors (nonsteroidal anti-inflammatory drugs (NSAIDs)) lowers the risk for Alzheimer's disease (AD) and Parkinson's disease (PD) by as much as 50%. Unfortunately, inhibiting cyclooxygenases with NSAIDs blocks the synthesis of downstream neuroprotective and neurotoxic PGs, thus producing adverse side effects. We focus on prostaglandin J2 (PGJ2) because it is highly neurotoxic compared to PGA1, D2, and E2. Unlike other PGs, PGJ2 and its metabolites have a cyclopentenone ring with reactive α,β-unsaturated carbonyl groups that form covalent Michael adducts with key cysteines in proteins and GSH. Cysteine-binding electrophiles such as PGJ2 are considered to play an important role in determining whether neurons will live or die. We discuss in vitro and in vivo studies showing that PGJ2 induces pathological processes relevant to neurodegenerative disorders such as AD and PD. Further, we discuss our work showing that increasing intracellular cAMP with the lipophilic peptide PACAP27 counteracts some of the PGJ2-induced detrimental effects. New therapeutic strategies that neutralize the effects of specific neurotoxic PGs downstream from cyclooxygenases could have a significant impact on the treatment of chronic neurodegenerative disorders with fewer adverse side effects.
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Affiliation(s)
| | - Chuhyon Corwin
- Department of Biological Sciences, Hunter College and the Graduate Center, CUNY, New York, New York
| | - John Babich
- Department of Radiology, Weill Cornell Medical College, New York, New York
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Yalcin MU, Gurses KM, Kocyigit D, Kesikli SA, Tokgozoglu L, Guc D, Aytemir K, Ozer N. Elevated Serum Beta-Trace Protein Levels are Associated With the Presence of Atrial Fibrillation in Hypertension Patients. J Clin Hypertens (Greenwich) 2015; 18:439-43. [PMID: 26435487 DOI: 10.1111/jch.12703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 08/03/2015] [Accepted: 08/10/2015] [Indexed: 01/13/2023]
Abstract
Beta-trace protein (BTP) has emerged as a novel biomarker of cardiovascular risk. In this study, the authors aimed to assess the relationship between BTP levels and presence of atrial fibrillation in patients who had controlled hypertension (HTN) and normal renal function. A total of 80 controlled HTN patients with paroxysmal atrial fibrillation (PAF) and 80 age- and sex-matched controls with controlled HTN were enrolled. Serum BTP levels were measured by enzyme-linked immunosorbent assay. BTP levels were found to be significantly higher in patients with PAF (P<.001). Other parameters including mean systolic and diastolic blood pressure values, serum creatinine levels, and glomerular filtration rate were similar between the two groups. Along with left atrial diameter (odds ratio, 1.504; P<.001), BTP levels (odds ratio, 1.015; P<.001) were independently associated with the presence of PAF. BTP levels were increased in controlled HTN patients with PAF compared with controls, and this association was observed within normal renal functions as reflected by normal glomerular filtration rate.
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Affiliation(s)
| | - Kadri M Gurses
- Department of Cardiology, Konya Training and Research Hospital, Konya, Turkey
| | - Duygu Kocyigit
- Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Sacit A Kesikli
- Basic Oncology Department, Hacettepe University Cancer Institute, Ankara, Turkey
| | - Lale Tokgozoglu
- Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Dicle Guc
- Basic Oncology Department, Hacettepe University Cancer Institute, Ankara, Turkey
| | - Kudret Aytemir
- Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Necla Ozer
- Department of Cardiology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Gómez-Abellán V, Montero J, López-Muñoz A, Figueras A, Arizcun M, Mulero V, Sepulcre MP. Professional phagocytic granulocyte-derived PGD2 regulates the resolution of inflammation in fish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2015; 52:182-191. [PMID: 26027798 DOI: 10.1016/j.dci.2015.04.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 04/28/2015] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
Prostaglandins (PGs) play a key role in the development on the immune response through the regulation of both pro- and anti-inflammatory processes. PGD(2) can be either pro- or anti-inflammatory depending on the inflammatory milieu. Prostaglandin D synthase (PGDS) is the enzyme responsible for the conversion of PGH(2) to PGD(2). In mammals, two types of PGDS synthase have been described, the hematopoietic (H-PGDS) and the lipocalin (L-PGDS). In the present study we describe the existence of two orthologs of the mammalian L-PGDS (PGDS1 and PGDS2) in the gilthead seabream and characterize their gene expression profiles and biological activity. The results showed a dramatic induction of the gene coding for PGDS1 in acidophilic granulocytes (AGs), which are functionally equivalent to mammalian neutrophils, after a prolonged in vitro activation with different pathogen associated molecular patterns (PAMPs). In contrast PGDS2 was not expressed in these cells. The functional relevance of the induction of PGDS1 in AGs was confirmed by the ability of these cells to release PGD(2) upon PAMP stimulation. To gain further insight into the role of PGD(2) in the resolution of inflammation in fish, we examined the ability of PGD(2) or its cyclopentenone derivates (cyPGs) to modulate the main functional activities of AGs. It was found that both PGD(2) and cyPGs inhibited the production of reactive oxygen species and downregulated the transcript levels of the gene encoding interleukin-1β. Taken together, these results demonstrate that the use of PGD(2) and its metabolites in the resolution of inflammation was established before the divergence of fish from tetrapods more than 450 million years ago and support a critical role for granulocytes in the resolution of inflammation in vertebrates.
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Affiliation(s)
- Victoria Gómez-Abellán
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - Jana Montero
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - Azucena López-Muñoz
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - Antonio Figueras
- Instituto de Investigaciones Marinas (IIM), Consejo Superior de Investigaciones Científicas (CSIC), Eduardo Cabello 6, 36208 Vigo, Spain
| | - Marta Arizcun
- Oceanographic Centre of Murcia, Spanish Oceanographic Institute (IEO), Puerto de Mazarrón, 30860 Murcia, Spain
| | - Victoriano Mulero
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
| | - María P Sepulcre
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
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Brown adipose tissue: a potential target in the fight against obesity and the metabolic syndrome. Clin Sci (Lond) 2015; 129:933-49. [DOI: 10.1042/cs20150339] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BAT (brown adipose tissue) is the main site of thermogenesis in mammals. It is essential to ensure thermoregulation in newborns. It is also found in (some) adult humans. Its capacity to oxidize fatty acids and glucose without ATP production contributes to energy expenditure and glucose homoeostasis. Brown fat activation has thus emerged as an attractive therapeutic target for the treatment of obesity and the metabolic syndrome. In the present review, we integrate the recent advances on the metabolic role of BAT and its relation with other tissues as well as its potential contribution to fighting obesity and the metabolic syndrome.
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Pathophysiological Roles of Cyclooxygenases and Prostaglandins in the Central Nervous System. Mol Neurobiol 2015; 53:4754-71. [PMID: 26328537 DOI: 10.1007/s12035-015-9355-3] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 07/07/2015] [Indexed: 01/01/2023]
Abstract
Cyclooxygenases (COXs) oxidize arachidonic acid to prostaglandin (PG) G2 and H2 followed by PG synthases that generates PGs and thromboxane (TX) A2. COXs are divided into COX-1 and COX-2. In the central nervous system, COX-1 is constitutively expressed in neurons, astrocytes, and microglial cells. COX-2 is upregulated in these cells under pathophysiological conditions. In hippocampal long-term potentiation, COX-2, PGE synthase, and PGE2 are induced in post-synaptic neurons. PGE2 acts pre-synaptic EP2 receptor, generates cAMP, stimulates protein kinase A, modulates voltage-dependent calcium channel, facilitates glutamatergic synaptic transmission, and potentiates long-term plasticity. PGD2, PGE2, and PGI2 exhibit neuroprotective effects via Gs-coupled DP1, EP2/EP4, and IP receptors, respectively. COX-2, PGD2, PGE2, PGF2α, and TXA2 are elevated in stroke. COX-2 inhibitors exhibit neuroprotective effects in vivo and in vitro models of stroke, Alzheimer's disease, Parkinson's disease, multiple sclerosis, amyotrophic lateral sclerosis, epilepsy, and schizophrenia, suggesting neurotoxicities of COX products. PGE2, PGF2α, and TXA2 can contribute to the neurodegeneration via EP1, FP, and TP receptors, respectively, which are coupled with Gq, stimulate phospholipase C and cleave phosphatidylinositol diphosphate to produce inositol triphosphate and diacylglycerol. Inositol triphosphate binds to inositol triphosphate receptor in endoplasmic reticulum, releases calcium, and results in increasing intracellular calcium concentrations. Diacylglycerol activates calcium-dependent protein kinases. PGE2 disrupts Ca(2+) homeostasis by impairing Na(+)-Ca(2+) exchange via EP1, resulting in the excess Ca(2+) accumulation. Neither PGE2, PGF2α, nor TXA2 causes neuronal cell death by itself, suggesting that they might enhance the ischemia-induced neurodegeneration. Alternatively, PGE2 is non-enzymatically dehydrated to a cyclopentenone PGA2, which induces neuronal cell death. Although PGD2 induces neuronal apoptosis after a lag time, neither DP1 nor DP2 is involved in the neurotoxicity. As well as PGE2, PGD2 is non-enzymatically dehydrated to a cyclopentenone 15-deoxy-Δ(12,14)-PGJ2, which induces neuronal apoptosis without a lag time. However, neurotoxicities of these cyclopentenones are independent of their receptors. The COX-2 inhibitor inhibits both the anchorage-dependent and anchorage-independent growth of glioma cell lines regardless of COX-2 expression, suggesting that some COX-2-independent mechanisms underlie the antineoplastic effect of the inhibitor. PGE2 attenuates this antineoplastic effect, suggesting that the predominant mechanism is COX-dependent. COX-2 or EP1 inhibitors show anti-neoplastic effects. Thus, our review presents evidences for pathophysiological roles of cyclooxygenases and prostaglandins in the central nervous system.
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Wasinger C, Künzl M, Minichsdorfer C, Höller C, Zellner M, Hohenegger M. Autocrine secretion of 15d-PGJ2 mediates simvastatin-induced apoptotic burst in human metastatic melanoma cells. Br J Pharmacol 2015; 171:5708-27. [PMID: 25091578 DOI: 10.1111/bph.12871] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 07/14/2014] [Accepted: 07/29/2014] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND AND PURPOSE Despite new therapeutic approaches, metastatic melanomas still have a poor prognosis. Statins reduce low-density lipoprotein cholesterol and exert anti-inflammatory and anti-proliferative actions. We have recently shown that simvastatin triggers an apoptotic burst in human metastatic melanoma cells by the synthesis of an autocrine factor. EXPERIMENTAL APPROACH The current in vitro study was performed in human metastatic melanoma cell lines (A375, 518a2) and primary human melanocytes and melanoma cells. The secretome of simvastatin-stressed cells was analysed with two-dimensional difference gel electrophoresis and MS. The signalling pathways involved were analysed at the protein and mRNA level using pharmacological approaches and siRNA technology. KEY RESULTS Simvastatin was shown to activate a stress cascade, leading to the synthesis of 15-deoxy-12,14-PGJ2 (15d-PGJ2 ), in a p38- and COX-2-dependent manner. Significant concentrations of 15d-PGJ2 were reached in the medium of melanoma cells, which were sufficient to activate caspase 8 and the mitochondrial pathway of apoptosis. Inhibition of lipocalin-type PGD synthase, a key enzyme for 15d-PGJ2 synthesis, abolished the apoptotic effect of simvastatin. Moreover, 15d-PGJ2 was shown to bind to the fatty acid-binding protein 5 (FABP5), which was up-regulated and predominantly detected in the secretome of simvastatin-stressed cells. Knockdown of FABP5 abolished simvastatin-induced activation of PPAR-γ and amplified the apoptotic response. CONCLUSIONS AND IMPLICATIONS We characterized simvastatin-induced activation of the 15d-PGJ2 /FABP5 signalling cascades, which triggered an apoptotic burst in melanoma cells but did not affect primary human melanocytes. These data support the rationale for the pharmacological targeting of 15d-PGJ2 in metastatic melanoma.
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Affiliation(s)
- Christine Wasinger
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
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Abstract
Lipid-derived electrophilic molecules are endogenously generated and are causally involved in many pathophysiological effects. Prostaglandin D2, a major cyclooxygenase product in a variety of tissues and cells, readily undergoes dehydration to yield the J-series PGs such as 15-deoxy-Δ(12,14)-PGJ2 (15d-PGJ2). Because of the electrophilic α,β-unsaturated ketone moiety present in its cyclopentenone ring, 15d-PGJ2 acts as an endogenous electrophile. 15d-PGJ2 can covalently react via the Michael addition reaction with critical cellular nucleophiles, such as the free cysteine residues of proteins that play a key role in the regulation of the intracellular signaling pathways. Covalent modification of cellular proteins by 15d-PGJ2 may be one of the most important mechanisms by which 15d-PGJ2 induces many biological responses involved in the pathophysiological effects associated with inflammation. This current review is intended to provide a comprehensive summary of 15d-PGJ2 as an endogenous electrophilic mediator of biological activities.
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Affiliation(s)
- Takahiro Shibata
- a Laboratory of Food and Biodynamics, Graduate School of Bioagricultural Sciences , Nagoya University , Nagoya , Japan
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Kuo HK, Chen YH, Huang F, Wu YC, Shiea J, Wu PC. The upregulation of zinc finger protein 670 and prostaglandin D2 synthase in proliferative vitreoretinopathy. Graefes Arch Clin Exp Ophthalmol 2015; 254:205-13. [DOI: 10.1007/s00417-015-3022-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 04/07/2015] [Accepted: 04/09/2015] [Indexed: 01/13/2023] Open
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Zhang C, Yu H, Ni X, Shen S, Das UN. Growth inhibitory effect of polyunsaturated fatty acids (PUFAs) on colon cancer cells via their growth inhibitory metabolites and fatty acid composition changes. PLoS One 2015; 10:e0123256. [PMID: 25886460 PMCID: PMC4401647 DOI: 10.1371/journal.pone.0123256] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 02/21/2015] [Indexed: 12/14/2022] Open
Abstract
Background Colorectal cancer is common. Polyunsaturated fatty acids (PUFAs) exert growth-inhibitory and pro-apoptotic effects on colon cancer cells. Metabolites of PUFAs such as prostaglandins (PGs), leukotrienes (LTs) and lipoxins (LXs) play a significant role in colon cancer. Methods Human colon cancer LoVo and RKO cells were cultured with different concentration of PUFAs and 5-fluorouracil (5-FU) in vitro. Cell morphological changes, fatty acid composition, formation of PGE2, LTB4 and LXA4 and expression of COX-2, ALOX5, PGD synthase (PGDS), microsomal prostaglandin E synthase (mPGES) were assessed in LoVo and RKO cells when supplemented with PUFAs and 5-FU. Results PUFAs and 5-FU inhibited growth of LoVo and RKO cells to the same extent at the doses used and produced significant alterations in their shape. As expected, higher concentrations of supplemented PUFAs were noted in the cells compared to control. LA, GLA, AA, ALA and EPA supplementation to LoVo cells suppressed production of PGE2, LTB4,and ALOX5, mPGES expression, but enhanced that of LXA4; whereas DHA enhanced PGE2 and LXA4 synthesis but decreased LTB4 formation and COX-2, ALOX5, mPGES expression. In contrast, 5-FU enhanced formation of PGE2, LTB4 and mPGES expression, but suppressed LXA4 synthesis and COX-2 expression. PGE2, LTB4 synthesis and ALOX5 expression was suppressed by LA, GLA, ALA and DHA; whereas AA, EPA and 5-FU enhanced PGE2 but paradoxically AA decreased and EPA and 5-FU enhanced LTB4 synthesis in RKO cells. All the PUFAs tested enhanced, while 5-FU decreased LXA4 formation in RKO cells; whereas GLA, AA, and 5-FU augmented while LA, ALA, EPA and DHA enhanced COX-2 expression in RKO cells. Conclusions Tumoricidal action of PUFAs on colorectal LoVo and RKO cancer cells in vitro was associated with increased formation of LXA4, decreased synthesis of PGE2 and LTB4 and suppressed expression of COX-2, ALOX5, mPGES, whereas 5-FU produced contrasting actions on these indices.
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Affiliation(s)
- Chengcheng Zhang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Haining Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310032, China
| | - Xiaofeng Ni
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Shengrong Shen
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
- * E-mail: (SS);
| | - Undurti N. Das
- UND Life Sciences, 2020 S 360 St, #K-202, Federal Way, WA, 98003, United States of America
- Department of Medicine and BioScience Research Centre, GVP Hospital, GVP College of Engineering campus, Visakhapatnam-530 048, India
- * E-mail: (SS);
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Prostaglandin profiling reveals a role for haematopoietic prostaglandin D synthase in adipose tissue macrophage polarisation in mice and humans. Int J Obes (Lond) 2015; 39:1151-60. [PMID: 25801691 PMCID: PMC4486370 DOI: 10.1038/ijo.2015.34] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 12/11/2014] [Accepted: 12/25/2014] [Indexed: 12/27/2022]
Abstract
BACKGROUND/OBJECTIVES Obesity has been associated with both changes in adipose tissue lipid metabolism and inflammation. A key class of lipid-derived signalling molecules involved in inflammation are the prostaglandins. In this study, we aimed to determine how obesity affects the levels of prostaglandins within white adipose tissue (WAT) and determine which cells within adipose tissue produce them. To avoid the effects of cellular stress on prostaglandin levels, we developed a multivariate statistical approach in which metabolite concentrations and transcriptomic data were integrated, allowing the assignment of metabolites to cell types. SUBJECTS/METHODS Eicosanoids were measured by liquid chromatography-tandem mass spectrometry and mRNA levels using real-time PCR. Eicosanoid levels and transcriptomic data were combined using principal component analysis and hierarchical clustering in order to associate metabolites with cell types. Samples were obtained from C57Bl/6 mice aged 16 weeks. We studied the ob/ob genetically obese mouse model and diet-induced obesity model. We extended our results in mice to a cohort of morbidly obese humans undergoing bariatric surgery. RESULTS Using our modelling approach, we determined that prostglandin D₂ (PGD₂) in adipose tissue was predominantly produced in macrophages by the haematopoietic isoform of prostaglandin D synthase (H-Pgds). Analysis of sub-fractionated WAT confirmed that H-Pgds was expressed in adipose tissue macrophages (ATMs). Furthermore, H-Pgds expression in ATMs isolated from lean and obese mice was consistent with it affecting macrophage polarisation. Functionally, we demonstrated that H-PGDS-produced PGD₂ polarised macrophages toward an M2, anti-inflammatory state. In line with a potential anti-inflammatory role, we found that H-PGDS expression in ATMs was positively correlated with both peripheral insulin and adipose tissue insulin sensitivity in humans. CONCLUSIONS In this study, we have developed a method to determine the cellular source of metabolites within an organ and used it to identify a new role for PGD₂ in the control of ATM polarisation.
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Nieves A, Garza LA. Does prostaglandin D2 hold the cure to male pattern baldness? Exp Dermatol 2015; 23:224-7. [PMID: 24521203 DOI: 10.1111/exd.12348] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2014] [Indexed: 12/17/2022]
Abstract
Lipids in the skin are the most diverse in the entire human body. Their bioactivity in health and disease is underexplored. Prostaglandin D2 has recently been identified as a factor which is elevated in the bald scalp of men with androgenetic alopecia (AGA) and has the capacity to decrease hair lengthening. An enzyme which synthesizes it, prostaglandin D2 synthase (PTGDS or lipocalin-PGDS), is hormone responsive in multiple other organs. PGD2 has two known receptors, GPR44 and PTGDR. GPR44 was found to be necessary for the decrease in hair growth by PGD2 . This creates an exciting opportunity to perhaps create novel treatments for AGA, which inhibit the activity of PTGDS, PGD2 or GPR44. This review discusses the current knowledge surrounding PGD2 , and future steps needed to translate these findings into novel therapies for patients with AGA.
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Affiliation(s)
- Ashley Nieves
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, MD, USA
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Mazari AMA, Hegazy UM, Mannervik B. Identification of new inhibitors for human hematopoietic prostaglandin D2 synthase among FDA-approved drugs and other compounds. Chem Biol Interact 2015; 229:91-9. [PMID: 25603235 DOI: 10.1016/j.cbi.2015.01.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 11/22/2014] [Accepted: 01/08/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Hematopoietic prostaglandin D2 synthase (HPGDS) is a member of the Sigma class glutathione transferases (GSTs) catalyzing the isomerization of prostaglandin H2 to prostaglandin D2, a mediator of allergy and inflammation responses. Selective inhibitors of human HPGDS are expected to be of therapeutic importance in relieving symptoms related to allergy and asthma. Hence, a collection of diverse FDA-approved compounds was screened for potential novel applications as inhibitors of HPGDS. METHODS The catalytic activity of purified HPGDS was used for inhibition studies in vitro. RESULTS Our inhibition studies revealed 23 compounds as effective inhibitors of HPGDS with IC50 values in the low micromolar range. Erythrosine sodium, suramin, tannic acid and sanguinarine sulfate were characterized with IC50 values of 0.2, 0.3, 0.4, and 0.6 μM, respectively. Kinetic inhibition analysis showed that erythrosine sodium is a nonlinear competitive inhibitor of HPGDS, while suramin, tannic acid and sanguinarine sulfate are linear competitive inhibitors. CONCLUSION The results show that certain FDA-approved compounds may have pharmacological effects not previously realized that warrant further consideration in their clinical use.
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Affiliation(s)
- Aslam M A Mazari
- Department of Neurochemistry, Stockholm University, SE-10691 Stockholm, Sweden
| | - Usama M Hegazy
- Molecular Biology Department, Genetic Engineering and Biotechnology Division, National Research Centre, Dokki, 12311 Cairo, Egypt
| | - Bengt Mannervik
- Department of Neurochemistry, Stockholm University, SE-10691 Stockholm, Sweden.
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Figueiredo-Pereira ME, Rockwell P, Schmidt-Glenewinkel T, Serrano P. Neuroinflammation and J2 prostaglandins: linking impairment of the ubiquitin-proteasome pathway and mitochondria to neurodegeneration. Front Mol Neurosci 2015; 7:104. [PMID: 25628533 PMCID: PMC4292445 DOI: 10.3389/fnmol.2014.00104] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 12/17/2014] [Indexed: 12/13/2022] Open
Abstract
The immune response of the CNS is a defense mechanism activated upon injury to initiate repair mechanisms while chronic over-activation of the CNS immune system (termed neuroinflammation) may exacerbate injury. The latter is implicated in a variety of neurological and neurodegenerative disorders such as Alzheimer and Parkinson diseases, amyotrophic lateral sclerosis, multiple sclerosis, traumatic brain injury, HIV dementia, and prion diseases. Cyclooxygenases (COX-1 and COX-2), which are key enzymes in the conversion of arachidonic acid into bioactive prostanoids, play a central role in the inflammatory cascade. J2 prostaglandins are endogenous toxic products of cyclooxygenases, and because their levels are significantly increased upon brain injury, they are actively involved in neuronal dysfunction induced by pro-inflammatory stimuli. In this review, we highlight the mechanisms by which J2 prostaglandins (1) exert their actions, (2) potentially contribute to the transition from acute to chronic inflammation and to the spreading of neuropathology, (3) disturb the ubiquitin-proteasome pathway and mitochondrial function, and (4) contribute to neurodegenerative disorders such as Alzheimer and Parkinson diseases, and amyotrophic lateral sclerosis, as well as stroke, traumatic brain injury (TBI), and demyelination in Krabbe disease. We conclude by discussing the therapeutic potential of targeting the J2 prostaglandin pathway to prevent/delay neurodegeneration associated with neuroinflammation. In this context, we suggest a shift from the traditional view that cyclooxygenases are the most appropriate targets to treat neuroinflammation, to the notion that J2 prostaglandin pathways and other neurotoxic prostaglandins downstream from cyclooxygenases, would offer significant benefits as more effective therapeutic targets to treat chronic neurodegenerative diseases, while minimizing adverse side effects.
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Affiliation(s)
- Maria E Figueiredo-Pereira
- Department of Biological Sciences, Hunter College, The Graduate School and University Center, City University of New York New York, NY, USA
| | - Patricia Rockwell
- Department of Biological Sciences, Hunter College, The Graduate School and University Center, City University of New York New York, NY, USA
| | - Thomas Schmidt-Glenewinkel
- Department of Biological Sciences, Hunter College, The Graduate School and University Center, City University of New York New York, NY, USA
| | - Peter Serrano
- Department of Psychology, Hunter College, The Graduate School and University Center, City University of New York New York, NY, USA
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