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Abstract:

Alternative splicing contributes to cell type-specific transcriptomes. Here, we show that changes in intragenic chromatin marks affect NCAM (neural cell adhesion molecule) exon 18 (E18) alternative splicing during neuronal differentiation. An increase in the repressive marks H3K9me2 and H3K27me3 along the gene body correlated with inhibition of polymerase II elongation in the E18 region, but without significantly affecting total mRNA levels. Treatment with the general DNA methylation inhibitor 5-azacytidine and BIX 01294, a specific inhibitor of H3K9 dimethylation, inhibited the differentiation-induced E18 inclusion, pointing to a role for repressive marks in sustaining NCAM splicing patterns typical of mature neurons. We demonstrate that intragenic deployment of repressive chromatin marks, induced by intronic small interfering RNAs targeting NCAM intron 18, promotes E18 inclusion in undifferentiated N2a cells, confirming the chromatin changes observed upon differentiation to be sufficient to induce alternative splicing. Combined with previous evidence that neuronal depolarization causes H3K9 acetylation and subsequent E18 skipping, our results show how two alternative epigenetic marks regulate NCAM alternative splicing and E18 levels in different cellular contexts. © 2013 European Molecular Biology Organization.

Registro:

Documento: Artículo
Título:Intragenic epigenetic changes modulate NCAM alternative splicing in neuronal differentiation
Autor:Schor, I.E.; Fiszbein, A.; Petrillo, E.; Kornblihtt, A.R.
Filiación:Laboratorio de Fisiología y Biología Molecular, Departamento de Fisiología, Biología Molecular y Celular, Universidad de Buenos Aires, 2 piso, Buenos Aires C1428EHA, Argentina
Genome Biology Unit, European Molecular Biology Laboratory (EMBL), Meyerhoffstrasse 1, Heidelberg, Germany
Palabras clave:Alternative splicing; Chromatin; Differentiation; Pol II elongation; azacitidine; messenger RNA; n (1 benzyl 4 piperidinyl) 2 (hexahydro 4 methyl 1h 1,4 diazepin 1 yl) 6,7 dimethoxy 4 quinazolinamine; nerve cell adhesion molecule; small interfering RNA; acetylation; alternative RNA splicing; animal cell; article; depolarization; DNA methylation; epigenetics; heterochromatin; mouse; nerve cell differentiation; nonhuman; priority journal; upregulation; Alternative Splicing; Animals; Azacitidine; Azepines; Cell Differentiation; Cell Line, Tumor; Chromatin; Chromatin Immunoprecipitation; DNA Methylation; DNA Primers; Epigenesis, Genetic; Exons; Mice; Neural Cell Adhesion Molecules; Neurons; Quinazolines; Real-Time Polymerase Chain Reaction; Reverse Transcriptase Polymerase Chain Reaction; RNA, Small Interfering; Sequence Analysis, DNA
Año:2013
Volumen:32
Número:16
Página de inicio:2264
Página de fin:2274
DOI: http://dx.doi.org/10.1038/emboj.2013.167
Título revista:EMBO Journal
Título revista abreviado:EMBO J.
ISSN:02614189
CODEN:EMJOD
CAS:azacitidine, 320-67-2, 52934-49-3; n (1 benzyl 4 piperidinyl) 2 (hexahydro 4 methyl 1h 1,4 diazepin 1 yl) 6,7 dimethoxy 4 quinazolinamine, 935693-62-2; Azacitidine, 320-67-2; Azepines; BIX 01294; Chromatin; DNA Primers; Neural Cell Adhesion Molecules; Quinazolines; RNA, Small Interfering
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02614189_v32_n16_p2264_Schor

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Citas:

---------- APA ----------
Schor, I.E., Fiszbein, A., Petrillo, E. & Kornblihtt, A.R. (2013) . Intragenic epigenetic changes modulate NCAM alternative splicing in neuronal differentiation. EMBO Journal, 32(16), 2264-2274.
http://dx.doi.org/10.1038/emboj.2013.167
---------- CHICAGO ----------
Schor, I.E., Fiszbein, A., Petrillo, E., Kornblihtt, A.R. "Intragenic epigenetic changes modulate NCAM alternative splicing in neuronal differentiation" . EMBO Journal 32, no. 16 (2013) : 2264-2274.
http://dx.doi.org/10.1038/emboj.2013.167
---------- MLA ----------
Schor, I.E., Fiszbein, A., Petrillo, E., Kornblihtt, A.R. "Intragenic epigenetic changes modulate NCAM alternative splicing in neuronal differentiation" . EMBO Journal, vol. 32, no. 16, 2013, pp. 2264-2274.
http://dx.doi.org/10.1038/emboj.2013.167
---------- VANCOUVER ----------
Schor, I.E., Fiszbein, A., Petrillo, E., Kornblihtt, A.R. Intragenic epigenetic changes modulate NCAM alternative splicing in neuronal differentiation. EMBO J. 2013;32(16):2264-2274.
http://dx.doi.org/10.1038/emboj.2013.167