Transcription of Different Exons 1 of the HumanNeuronal Nitric Oxide Synthase Gene IsDynamically Regulated in a Cell- and Stimulus-Specific Manner
Identifieur interne : 003252 ( Main/Exploration ); précédent : 003251; suivant : 003253Transcription of Different Exons 1 of the HumanNeuronal Nitric Oxide Synthase Gene IsDynamically Regulated in a Cell- and Stimulus-Specific Manner
Auteurs : J.-P. Boissel ; M. Zelenka ; U. Gödtel-Armbrust ; T. J. Feuerstein ; U. FörstermannSource :
- Biological Chemistry [ 1431-6730 ] ; 2003.
English descriptors
- Teeft :
- Alternative promoter usage, Antisense, Assay, Biol, Boissel, Cdna, Cell lines, Chem, Clone, Common exon, Current study, Dawson, Dibutyryl, Dibutyryl camp, Exon, First exons, Genbank, Genomic, Genomic localization, Genomic organization, Hacat, Hacat cells, Human nnos, Human nnos gene, Mrna, Neuroepithelioma, Neuroepithelioma cells, Nitric, Nitric oxide synthase, Nnos, Nnos gene, Nnos mrna expression, Nnos transcripts, Primer, Promoter, Receptor, Rnase, Skeletal muscle, Synthase, Testis, Transcript, Transcription, Transcriptional, Upregulation, Wang.
Abstract
An extensive screening of the human neuronal nitric oxide synthase (nNOS) mRNAs in various human tissues and cell lines unraveled an extreme complexity in the transcription of this gene. Using 5' rapid amplification of cDNA ends (5'-RACE), ten different exons 1 named 1a-1l) were identified. They were spliced in a cell-specific manner to a common exon 2, which bears the translational start site. Three first exons (1d, 1g and 1f) were used predominantly for the transcription of the nNOS gene (146 out of 197 5'-RACE clones contained these exons). Exon 1k was found alone, but in many instances was interposed between exons 1b, 1d, 1g, 1i or 1j and the common exon 2. In addition to the cellspecific heterogeneity of human nNOS transcripts, nNOS is highly regulated at the transcriptional level. In resting A673 neuroepithelioma cells, the prevalent nNOS transcript was the exon 1g mRNA with minor expression of exons 1d+1k and exon 1f mRNAs). When the cells were treated with dibutyrylcAMP, nNOS mRNA was markedly upregulated. This upregulation was solely due to an increase in exon 1f mRNA, while the expression of the other mRNA species remained unchanged. Human HaCat keratinocyte like cells expressed the exon 1i+1k and 1i nNOS transcripts under basal conditions. When stimulated with epidermal growth factor, only the exon 1i+1k transcript was upregulated. Although these nNOS transcripts do not differ in their translated region, the various mRNAs may trigger post-transcriptional effects such as changes in mRNA stability and translation efficiency.
Url:
DOI: 10.1515/BC.2003.041
Affiliations:
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Specific Manner</title><author><name sortKey="Boissel, J P" sort="Boissel, J P" uniqKey="Boissel J" first="J.-P." last="Boissel">J.-P. Boissel</name></author><author><name sortKey="Zelenka, M" sort="Zelenka, M" uniqKey="Zelenka M" first="M." last="Zelenka">M. Zelenka</name></author><author><name sortKey="Godtel Armbrust, U" sort="Godtel Armbrust, U" uniqKey="Godtel Armbrust U" first="U." last="Gödtel-Armbrust">U. Gödtel-Armbrust</name></author><author><name sortKey="Feuerstein, T J" sort="Feuerstein, T J" uniqKey="Feuerstein T" first="T. J." last="Feuerstein">T. J. Feuerstein</name></author><author><name sortKey="Forstermann, U" sort="Forstermann, U" uniqKey="Forstermann U" first="U." last="Förstermann">U. Förstermann</name></author></analytic><monogr></monogr><series><title level="j" type="abbrev">Biological Chemistry</title><idno type="ISSN">1431-6730</idno><imprint><publisher>Walter de Gruyter</publisher><date type="published">2003</date><date type="e-published">2005</date><biblScope unit="vol">384</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="351">351</biblScope><biblScope unit="page" to="362">362</biblScope></imprint><idno type="ISSN">1431-6730</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1431-6730</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Alternative promoter usage</term><term>Antisense</term><term>Assay</term><term>Biol</term><term>Boissel</term><term>Cdna</term><term>Cell lines</term><term>Chem</term><term>Clone</term><term>Common exon</term><term>Current study</term><term>Dawson</term><term>Dibutyryl</term><term>Dibutyryl camp</term><term>Exon</term><term>First exons</term><term>Genbank</term><term>Genomic</term><term>Genomic localization</term><term>Genomic organization</term><term>Hacat</term><term>Hacat cells</term><term>Human nnos</term><term>Human nnos gene</term><term>Mrna</term><term>Neuroepithelioma</term><term>Neuroepithelioma cells</term><term>Nitric</term><term>Nitric oxide synthase</term><term>Nnos</term><term>Nnos gene</term><term>Nnos mrna expression</term><term>Nnos transcripts</term><term>Primer</term><term>Promoter</term><term>Receptor</term><term>Rnase</term><term>Skeletal muscle</term><term>Synthase</term><term>Testis</term><term>Transcript</term><term>Transcription</term><term>Transcriptional</term><term>Upregulation</term><term>Wang</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">An extensive screening of the human neuronal nitric oxide synthase (nNOS) mRNAs in various human tissues and cell lines unraveled an extreme complexity in the transcription of this gene. Using 5' rapid amplification of cDNA ends (5'-RACE), ten different exons 1 named 1a-1l) were identified. They were spliced in a cell-specific manner to a common exon 2, which bears the translational start site. Three first exons (1d, 1g and 1f) were used predominantly for the transcription of the nNOS gene (146 out of 197 5'-RACE clones contained these exons). Exon 1k was found alone, but in many instances was interposed between exons 1b, 1d, 1g, 1i or 1j and the common exon 2. In addition to the cellspecific heterogeneity of human nNOS transcripts, nNOS is highly regulated at the transcriptional level. In resting A673 neuroepithelioma cells, the prevalent nNOS transcript was the exon 1g mRNA with minor expression of exons 1d+1k and exon 1f mRNAs). When the cells were treated with dibutyrylcAMP, nNOS mRNA was markedly upregulated. This upregulation was solely due to an increase in exon 1f mRNA, while the expression of the other mRNA species remained unchanged. Human HaCat keratinocyte like cells expressed the exon 1i+1k and 1i nNOS transcripts under basal conditions. When stimulated with epidermal growth factor, only the exon 1i+1k transcript was upregulated. Although these nNOS transcripts do not differ in their translated region, the various mRNAs may trigger post-transcriptional effects such as changes in mRNA stability and translation efficiency.</div></front></TEI><affiliations><list></list><tree><noCountry><name sortKey="Boissel, J P" sort="Boissel, J P" uniqKey="Boissel J" first="J.-P." last="Boissel">J.-P. Boissel</name><name sortKey="Feuerstein, T J" sort="Feuerstein, T J" uniqKey="Feuerstein T" first="T. J." last="Feuerstein">T. J. Feuerstein</name><name sortKey="Forstermann, U" sort="Forstermann, U" uniqKey="Forstermann U" first="U." last="Förstermann">U. Förstermann</name><name sortKey="Godtel Armbrust, U" sort="Godtel Armbrust, U" uniqKey="Godtel Armbrust U" first="U." last="Gödtel-Armbrust">U. Gödtel-Armbrust</name><name sortKey="Zelenka, M" sort="Zelenka, M" uniqKey="Zelenka M" first="M." last="Zelenka">M. Zelenka</name></noCountry></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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