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Efferent projections of prokineticin 2 expressing neurons in the mouse suprachiasmatic nucleus
The suprachiasmatic nucleus (SCN) in the hypothalamus is the predominant circadian clock in mammals. To function as a pacemaker, the intrinsic timing signal from the SCN must be transmitted to different brain regions. Prokineticin 2 (PK2) is one of the candidate output molecules from the SCN. In thi...
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Published in: | PloS one 2009-09, Vol.4 (9), p.e7151-e7151 |
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description | The suprachiasmatic nucleus (SCN) in the hypothalamus is the predominant circadian clock in mammals. To function as a pacemaker, the intrinsic timing signal from the SCN must be transmitted to different brain regions. Prokineticin 2 (PK2) is one of the candidate output molecules from the SCN. In this study, we investigated the efferent projections of PK2-expressing neurons in the SCN through a transgenic reporter approach. Using a bacterial artificial chromosome (BAC) transgenic mouse line, in which the enhanced green fluorescence protein (EGFP) reporter gene expression was driven by the PK2 promoter, we were able to obtain an efferent projections map from the EGFP-expressing neurons in the SCN. Our data revealed that EGFP-expressing neurons in the SCN, hence representing some of the PK2-expressing neurons, projected to many known SCN target areas, including the ventral lateral septum, medial preoptic area, subparaventricular zone, paraventricular nucleus, dorsomedial hypothalamic nucleus, lateral hypothalamic area and paraventricular thalamic nucleus. The efferent projections of PK2-expressing neurons supported the role of PK2 as an output molecule of the SCN. |
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To function as a pacemaker, the intrinsic timing signal from the SCN must be transmitted to different brain regions. Prokineticin 2 (PK2) is one of the candidate output molecules from the SCN. In this study, we investigated the efferent projections of PK2-expressing neurons in the SCN through a transgenic reporter approach. Using a bacterial artificial chromosome (BAC) transgenic mouse line, in which the enhanced green fluorescence protein (EGFP) reporter gene expression was driven by the PK2 promoter, we were able to obtain an efferent projections map from the EGFP-expressing neurons in the SCN. Our data revealed that EGFP-expressing neurons in the SCN, hence representing some of the PK2-expressing neurons, projected to many known SCN target areas, including the ventral lateral septum, medial preoptic area, subparaventricular zone, paraventricular nucleus, dorsomedial hypothalamic nucleus, lateral hypothalamic area and paraventricular thalamic nucleus. The efferent projections of PK2-expressing neurons supported the role of PK2 as an output molecule of the SCN.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0007151</identifier><identifier>PMID: 19784373</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Animals ; Artificial chromosomes ; Bacteria ; Bacterial artificial chromosomes ; Body temperature ; Brain ; Brain - metabolism ; Chromosomes, Artificial, Bacterial ; Circadian rhythm ; Circadian rhythms ; Cloning ; Fluorescence ; Gastrointestinal Hormones - biosynthesis ; Gene expression ; Gene Expression Regulation ; Genes, Reporter ; Genetic engineering ; Green Fluorescent Proteins - metabolism ; Hypothalamus ; Hypothalamus (lateral) ; Hypothalamus - metabolism ; In Situ Hybridization, Fluorescence ; Localization ; Mice ; Mice, Transgenic ; Nervous system ; Neurogenesis ; Neurons ; Neurons - metabolism ; Neuropeptides - biosynthesis ; Neuroscience ; Neuroscience/Behavioral Neuroscience ; Neuroscience/Neuronal and Glial Cell Biology ; Oscillometry ; Paraventricular nucleus ; Pharmacology ; Physiology ; Polypeptides ; Preoptic area ; Promoter Regions, Genetic ; Reporter gene ; Rodents ; Septum ; Suprachiasmatic nucleus ; Suprachiasmatic Nucleus - metabolism ; Thalamus ; Transgenic animals ; Transgenic mice ; Transplants & implants ; Trends ; Vasopressins - metabolism</subject><ispartof>PloS one, 2009-09, Vol.4 (9), p.e7151-e7151</ispartof><rights>COPYRIGHT 2009 Public Library of Science</rights><rights>2009 Zhang et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Zhang et al. 2009</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c729t-d4a3542f4595a2f0b0665d6732894808c3a98cabf2d7124f4ab744692fae9a863</citedby><cites>FETCH-LOGICAL-c729t-d4a3542f4595a2f0b0665d6732894808c3a98cabf2d7124f4ab744692fae9a863</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.proquest.com/docview/1292103850/fulltextPDF?pq-origsite=primo$$EPDF$$P50$$Gproquest$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.proquest.com/docview/1292103850?pq-origsite=primo$$EHTML$$P50$$Gproquest$$Hfree_for_read</linktohtml><link.rule.ids>230,314,727,780,784,885,25751,27922,27923,37010,37011,44588,53789,53791,74896</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/19784373$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Nitabach, Michael N.</contributor><creatorcontrib>Zhang, Chengkang</creatorcontrib><creatorcontrib>Truong, Kimberly K</creatorcontrib><creatorcontrib>Zhou, Qun-Yong</creatorcontrib><title>Efferent projections of prokineticin 2 expressing neurons in the mouse suprachiasmatic nucleus</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>The suprachiasmatic nucleus (SCN) in the hypothalamus is the predominant circadian clock in mammals. To function as a pacemaker, the intrinsic timing signal from the SCN must be transmitted to different brain regions. Prokineticin 2 (PK2) is one of the candidate output molecules from the SCN. In this study, we investigated the efferent projections of PK2-expressing neurons in the SCN through a transgenic reporter approach. Using a bacterial artificial chromosome (BAC) transgenic mouse line, in which the enhanced green fluorescence protein (EGFP) reporter gene expression was driven by the PK2 promoter, we were able to obtain an efferent projections map from the EGFP-expressing neurons in the SCN. Our data revealed that EGFP-expressing neurons in the SCN, hence representing some of the PK2-expressing neurons, projected to many known SCN target areas, including the ventral lateral septum, medial preoptic area, subparaventricular zone, paraventricular nucleus, dorsomedial hypothalamic nucleus, lateral hypothalamic area and paraventricular thalamic nucleus. The efferent projections of PK2-expressing neurons supported the role of PK2 as an output molecule of the SCN.</description><subject>Animals</subject><subject>Artificial chromosomes</subject><subject>Bacteria</subject><subject>Bacterial artificial chromosomes</subject><subject>Body temperature</subject><subject>Brain</subject><subject>Brain - metabolism</subject><subject>Chromosomes, Artificial, Bacterial</subject><subject>Circadian rhythm</subject><subject>Circadian rhythms</subject><subject>Cloning</subject><subject>Fluorescence</subject><subject>Gastrointestinal Hormones - biosynthesis</subject><subject>Gene expression</subject><subject>Gene Expression Regulation</subject><subject>Genes, Reporter</subject><subject>Genetic engineering</subject><subject>Green Fluorescent Proteins - metabolism</subject><subject>Hypothalamus</subject><subject>Hypothalamus (lateral)</subject><subject>Hypothalamus - metabolism</subject><subject>In Situ Hybridization, Fluorescence</subject><subject>Localization</subject><subject>Mice</subject><subject>Mice, Transgenic</subject><subject>Nervous system</subject><subject>Neurogenesis</subject><subject>Neurons</subject><subject>Neurons - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>PloS one</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Chengkang</au><au>Truong, Kimberly K</au><au>Zhou, Qun-Yong</au><au>Nitabach, Michael N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Efferent projections of prokineticin 2 expressing neurons in the mouse suprachiasmatic nucleus</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2009-09-28</date><risdate>2009</risdate><volume>4</volume><issue>9</issue><spage>e7151</spage><epage>e7151</epage><pages>e7151-e7151</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>The suprachiasmatic nucleus (SCN) in the hypothalamus is the predominant circadian clock in mammals. To function as a pacemaker, the intrinsic timing signal from the SCN must be transmitted to different brain regions. Prokineticin 2 (PK2) is one of the candidate output molecules from the SCN. In this study, we investigated the efferent projections of PK2-expressing neurons in the SCN through a transgenic reporter approach. Using a bacterial artificial chromosome (BAC) transgenic mouse line, in which the enhanced green fluorescence protein (EGFP) reporter gene expression was driven by the PK2 promoter, we were able to obtain an efferent projections map from the EGFP-expressing neurons in the SCN. Our data revealed that EGFP-expressing neurons in the SCN, hence representing some of the PK2-expressing neurons, projected to many known SCN target areas, including the ventral lateral septum, medial preoptic area, subparaventricular zone, paraventricular nucleus, dorsomedial hypothalamic nucleus, lateral hypothalamic area and paraventricular thalamic nucleus. The efferent projections of PK2-expressing neurons supported the role of PK2 as an output molecule of the SCN.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>19784373</pmid><doi>10.1371/journal.pone.0007151</doi><tpages>e7151</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Animals Artificial chromosomes Bacteria Bacterial artificial chromosomes Body temperature Brain Brain - metabolism Chromosomes, Artificial, Bacterial Circadian rhythm Circadian rhythms Cloning Fluorescence Gastrointestinal Hormones - biosynthesis Gene expression Gene Expression Regulation Genes, Reporter Genetic engineering Green Fluorescent Proteins - metabolism Hypothalamus Hypothalamus (lateral) Hypothalamus - metabolism In Situ Hybridization, Fluorescence Localization Mice Mice, Transgenic Nervous system Neurogenesis Neurons Neurons - metabolism Neuropeptides - biosynthesis Neuroscience Neuroscience/Behavioral Neuroscience Neuroscience/Neuronal and Glial Cell Biology Oscillometry Paraventricular nucleus Pharmacology Physiology Polypeptides Preoptic area Promoter Regions, Genetic Reporter gene Rodents Septum Suprachiasmatic nucleus Suprachiasmatic Nucleus - metabolism Thalamus Transgenic animals Transgenic mice Transplants & implants Trends Vasopressins - metabolism |
title | Efferent projections of prokineticin 2 expressing neurons in the mouse suprachiasmatic nucleus |
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