Karl, Claudia and Couillard-Despres, Sebastien and Prang, Peter and Munding, Maximilian and Kilb, Werner and Brigadski, Tanja and Ploetz, Sonja and Mages, Wolfgang and Luhmann, Heiko and Winkler, Juergen and Bogdahn, Ulrich and Aigner, Ludwig (2005) Neuronal precursor-specific activity of a human doublecortin regulatory sequence. JOURNAL OF NEUROCHEMISTRY, 92 (2). pp. 264-282. ISSN 0022-3042, 1471-4159
Full text not available from this repository. (Request a copy)Abstract
The doublecortin (DCX) gene encodes a 40-kDa microtubule-associated protein specifically expressed in neuronal precursors of the developing and adult CNS. Due to its specific expression pattern, attention was drawn to DCX as a marker for neuronal precursors and neurogenesis, thereby underscoring the importance of its promoter identification and promoter analysis. Here, we analysed the human DCX regulatory sequence and confined it to a 3.5-kb fragment upstream of the ATG start codon. We demonstrate by transient transfection experiments that this fragment is sufficient and specific to drive expression of reporter genes in embryonic and adult neuronal precursors. The activity of this regulatory fragment overlapped with the expression of endogenous DCX and with the young neuronal markers class III beta-tubulin isotype and microtubule-associated protein Map2ab but not with glial or oligodendroglial markers. Electrophysiological data further confirmed the immature neuronal nature of these cells. Deletions within the 3.5-kb region demonstrated the relevance of specific regions containing transcription factor-binding sites. Moreover, application of neurogenesis-related growth factors in the neuronal precursor cultures suggested the lack of direct signalling of these factors on the DCX promoter construct.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | NEURAL STEM-CELLS; DOUBLE-CORTEX SYNDROME; SUBCORTICAL LAMINAR HETEROTOPIA; ADULT HIPPOCAMPAL NEUROGENESIS; MICROTUBULE-ASSOCIATED PROTEIN; IN-VITRO; SUBVENTRICULAR ZONE; PROGENITOR CELLS; CEREBRAL-CORTEX; DENTATE GYRUS; gene regulation; neurogenesis; neuronal migration; neuronal progenitors; transcription factors |
| Subjects: | 500 Science > 570 Life sciences 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Neurologie Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie Biology, Preclinical Medicine > Institut für Anatomie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 08 Jun 2021 08:38 |
| Last Modified: | 08 Jun 2021 08:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36741 |
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