文章基本信息

标题：Developmental Changes in Serotonin 2C Receptor mRNA Editing in the Rat Cerebral Cortex and Primary Cultured Cortical Neurons
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作者：Michihisa Tohda ; Pham Nguyet Thi Hang ; Kinzo Matsumoto 等
期刊名称：Biological and Pharmaceutical Bulletin
印刷版ISSN：0918-6158
电子版ISSN：1347-5215
出版年度：2009
卷号：32
期号：2
页码：289-292
DOI：10.1248/bpb.32.289
出版社：The Pharmaceutical Society of Japan
摘要：Serotonin 2C receptor (5-HT2CR) mRNA has been reported to receive editing at 5 nucleotide positions (named sites A—E) which are located inconsecutively on the nucleotide sequence encoding the 2nd intracellular loop of the receptor protein. To clarify the physiological role of 5-HT2CR mRNA editing, we investigated developmental changes in editing frequencies at sites A—E in the rat cerebral cortex and primary cultured cortical neurons. The editing at sites A and B increased in parallel with the rat brain development and reached a plateau of 80—100% frequency at postnatal days 1—3. Although editing frequency at site C was low compared to those detected at other sites except site E during a developmental period, it reached the maximal value of 30% during a first 7-d period after birth and then decreased gradually to the negligible level at PN49. Site D exhibited almost constant susceptibility (about 60%) to editing, while no editing at site E was occurred during rat brain development. Similar changes during development in editing frequencies at these sites were observed in primary cultured cortical cells during the cultivation period. These findings indicated that editing sites A—D on 5-HT2CR mRNA have different susceptibility and that the frequencies at these sites are not always constant during development.
关键词：RNA editing;serotonin 2C receptor;neuronal development;primary cultured cortical cell;depression