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Komenoi S, Suzuki Y, Asami M, Murakami C, Hoshino F, Chiba S, Takahashi D, Kado S, Sakane F. Microarray analysis of gene expression in the diacylglycerol kinase η knockout mouse brain. Biochem Biophys Rep 2019; 19:100660. [PMID: 31297456 PMCID: PMC6597918 DOI: 10.1016/j.bbrep.2019.100660] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 06/17/2019] [Accepted: 06/19/2019] [Indexed: 12/18/2022] Open
Abstract
We have revealed that diacylglycerol kinase η (DGKη)-knockout (KO) mice display bipolar disorder (BPD) remedy-sensitive mania-like behaviors. However, the molecular mechanisms causing the mania-like abnormal behaviors remain unclear. In the present study, microarray analysis was performed to determine global changes in gene expression in the DGKη-KO mouse brain. We found that the DGKη-KO brain had 43 differentially expressed genes and the following five affected biological pathways: "neuroactive ligand-receptor interaction", "transcription by RNA polymerase II", "cytosolic calcium ion concentration", "Jak-STAT signaling pathway" and "ERK1/2 cascade". Interestingly, mRNA levels of prolactin and growth hormone, which are augmented in BPD patients and model animals, were most strongly increased. Notably, all five biological pathways include at least one gene among prolactin, growth hormone, forkhead box P3, glucagon-like peptide 1 receptor and interleukin 1β, which were previously implicated in BPD. Consistent with the microarray data, phosphorylated ERK1/2 levels were decreased in the DGKη-KO brain. Microarray analysis showed that the expression levels of several glycerolipid metabolism-related genes were also changed. Liquid chromatography-mass spectrometry revealed that several polyunsaturated fatty acid (PUFA)-containing phosphatidic acid (PA) molecular species were significantly decreased as a result of DGKη deficiency, suggesting that the decrease affects PUFA metabolism. Intriguingly, the PUFA-containing lysoPA species were markedly decreased in DGKη-KO mouse blood. Taken together, our study provides not only key broad knowledge to gain novel insights into the underlying mechanisms for the mania-like behaviors but also information for developing BPD diagnostics.
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Key Words
- BPD, bipolar disorder
- Bipolar disorder
- DAVID, Database for AnnotationVisualization and Integrated Discovery
- DG, diacylglycerol
- DGK, diacylglycerol kinase
- Diacylglycerol kinase
- ERK, extracellular signal-regulated kinase
- Fpr2, N-formyl peptide receptor 2
- GO:BP, Gene Ontology: Biological Process
- GWAS, genome-wide association study
- Gh, growth hormone
- Glp1r, glucagon-like peptide 1 receptor
- Growth hormone
- Il1b, interleukin 1β
- KEGG, Kyoto Encyclopedia of Genes and Genomes
- KO, knockout
- LC-MS, liquid chromatography-mass spectrometry
- LPA, lysophosphatidic acid
- Lysophosphatidic acid
- MEK, mitogen-activated protein kinase/ERK kinase
- PA, phosphatidic acid
- PI, phosphatidylinositol
- PUFA, polyunsaturated fatty acid
- Phosphatidic acid
- Prl, prolactin
- Prolactin
- SERT, serotonin transporter
- WT, wild type
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Affiliation(s)
- Suguru Komenoi
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Yuji Suzuki
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Maho Asami
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Chiaki Murakami
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Fumi Hoshino
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Sohei Chiba
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Daisuke Takahashi
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Sayaka Kado
- Center for Analytical Instrumentation, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
| | - Fumio Sakane
- Department of Chemistry, Graduate School of Science, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan
- Corresponding author. Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba, 263-8522, Japan.
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Schneeberger M, Altirriba J, García A, Esteban Y, Castaño C, García-Lavandeira M, Alvarez CV, Gomis R, Claret M. Deletion of miRNA processing enzyme Dicer in POMC-expressing cells leads to pituitary dysfunction, neurodegeneration and development of obesity. Mol Metab 2012; 2:74-85. [PMID: 24199146 DOI: 10.1016/j.molmet.2012.10.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 10/05/2012] [Accepted: 10/07/2012] [Indexed: 10/27/2022] Open
Abstract
MicroRNAs (miRNAs) have recently emerged as key regulators of metabolism. However, their potential role in the central regulation of whole-body energy homeostasis is still unknown. In this study we show that the expression of Dicer, an essential endoribonuclease for miRNA maturation, is modulated by nutrient availability and excess in the hypothalamus. Conditional deletion of Dicer in POMC-expressing cells resulted in obesity, characterized by hyperphagia, increased adiposity, hyperleptinemia, defective glucose metabolism and alterations in the pituitary-adrenal axis. The development of the obese phenotype was paralleled by a POMC neuron degenerative process that started around 3 weeks of age. Hypothalamic transcriptomic analysis in presymptomatic POMCDicerKO mice revealed the downregulation of genes implicated in biological pathways associated with classical neurodegenerative disorders, such as MAPK signaling, ubiquitin-proteosome system, autophagy and ribosome biosynthesis. Collectively, our results highlight a key role for miRNAs in POMC neuron survival and the consequent development of neurodegenerative obesity.
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Key Words
- 3V, third ventricle
- ACTH, adrenocorticotropic hormone
- AP, adenopituitary
- ARC, arcuate nucleus of the hypothalamus
- AUC, area under the curve
- Acp2, acid phosphatase 2, lysosomal
- AgRP, agouti-related protein
- Ago2, Argonaute 2
- CART, cocaine and amphetamine-related transcript
- CNS, central nervous system
- CRH, corticotropin releasing hormone
- Crhr1, corticotrophin releasing hormone receptor 1
- Cx, Cortex
- DIO, diet-induced obesity
- Dicer
- Fa, Fascicular zone
- GFP, green fluorescent protein
- Gapdh, Glyceraldehyde 3-phosphate dehydrogenase
- Gh, growth hormone
- Gl, Glomerular zone
- Hprt, Hypoxanthine guanine phosphoribosyl transferase
- Hypothalamus
- IL, intermediate lobe
- IP, intraperitoneal
- LH, lateral hypothalamus
- MC3R, melanocortin receptor 3
- MC4R, melanocortin receptor 4
- MZ, Marginal Zone
- Me, Medula
- Myc, myelocytomatosis oncogene
- NP, neurohypophysis
- NPY, neuropeptide Y
- NS, not significant
- Naglu, alpha-N-acetylglucosaminidase
- Neurodegeneration
- Nhlrc1, NHL repeat containing 1
- Ntrk2, Neurotrophic tyrosine kinase, receptor, type 2
- Obesity
- POMC
- POMC, pro-opiomelanocortin
- POMCDicerKO, mice lacking Dicer in POMC-expressing cells
- PVN, paraventricular nucleus
- Park2, Parkin
- Pit1, pituitary-specific transcription factor 1
- Re, Reticular zone
- Rps24, ribosomal protein S24
- Rps9, ribosomal protein S9
- Tpit, T box transcription factor
- Tshβ, thyroid-stimulating hormone β chain
- UD, undetectable
- UPS, ubiquitin proteosome system
- UTR, untranslated region
- VMH, ventromedial hypothalamus
- YFP, yellow fluorescent protein.
- miRISC, miRNA-induced silencing complexes
- miRNA, microRNA
- microRNA
- qPCR, quantitative real-time PCR
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Affiliation(s)
- Marc Schneeberger
- Diabetes and Obesity Laboratory, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain ; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Barcelona, Spain ; Department of Endocrinology and Nutrition, Hospital Clínic, School of Medicine, University of Barcelona, Barcelona, Spain
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