کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8478333 | 1551115 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification and characterization of two novel alternatively spliced E2F1 transcripts in the rat CNS
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کلمات کلیدی
qPCRTBPHRPPSD-95NMDTDP-43TAR DNA-binding protein-43E2F1postsynaptic density-95 - تراکم پست سیناپتیک 95Alternative splicing - جابجایی جایگزینCNS - دستگاه عصبی مرکزیcentral nervous system - سیستم عصبی مرکزیnonsense-mediated mRNA decay - فرسودن mRNA ناشی از بی معنی استquantitative real-time PCR - واکنش زنجیره ای پلیمراز واقعی در زمان واقعیHorseradish peroxidase - پراکسیداز هوررادیشTATA-box binding protein - پروتئین اتصال TATA جعبه
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
E2F1 is a transcription factor classically known to regulate G0/G1 to S phase progression in the cell cycle. In addition, E2F1 also regulates a wide range of apoptotic genes and thus has been well studied in the context of neuronal death and neurodegenerative diseases. However, its function and regulation in the mature central nervous system are not well understood. Alternative splicing is a well-conserved post-transcriptional mechanism common in cells of the CNS and is necessary to generate diverse functional modifications to RNA or protein products from genes. Heretofore, physiologically significant alternatively spliced E2F1 transcripts have not been reported. In the present study, we report the identification of two novel alternatively spliced E2F1 transcripts: E2F1b, an E2F1 transcript retaining intron 5, and E2F1c, an E2F1 transcript excluding exon 6. These alternatively spliced transcripts are observed in the brain and neural cell types including neurons, astrocytes, and undifferentiated oligodendrocytes. The expression of these E2F1 transcripts is distinct during maturation of primary hippocampal neuroglial cells. Pharmacologically-induced global translation inhibition with cycloheximide, anisomycin or thapsigargin lead to significantly reduced expression of E2F1a, E2F1b and E2F1c. Conversely, increasing neuronal activity by elevating the concentration of potassium chloride selectively increased the expression of E2F1b. Furthermore, experiments expressing these variants in vitro show the transcripts can be translated to generate a protein product. Taken together, our data suggest that the alternatively spliced E2F1 transcript behave differently than the E2F1a transcript, and our results provide a foundation for future investigation of the function of E2F1 splice variants in the CNS.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular and Cellular Neuroscience - Volume 92, October 2018, Pages 1-11
Journal: Molecular and Cellular Neuroscience - Volume 92, October 2018, Pages 1-11
نویسندگان
Dan P. Jackson, Jenhao H. Ting, Paul D. Pozniak, Claire Meurice, Stephanie S. Schleidt, Anh Dao, Amy H. Lee, Eva Klinman, Kelly L. Jordan-Sciutto,