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Alternative Splicing of the Chromodomain Protein Morf4l1 Pre-mRNA Has Implications on Cell Differentiation in the Developing Chicken Retina
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Medicinsk utvecklingsbiologi.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för neurovetenskap, Medicinsk utvecklingsbiologi.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi.
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2013 (engelsk)Inngår i: Journal of Molecular Neuroscience, ISSN 0895-8696, E-ISSN 1559-1166, Vol. 51, nr 2, s. 615-628Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The proliferation, cell cycle exit and differentiation of progenitor cells are controlled by several different factors. The chromodomain protein mortality factor 4-like 1 (Morf4l1) has been ascribed a role in both proliferation and differentiation. Little attention has been given to the existence of alternative splice variants of the Morf4l1 mRNA, which encode two Morf41l isoforms: a short isoform (S-Morf4l1) with an intact chromodomain and a long isoform (L-Morf4l1) with an insertion in or in the vicinity of the chromodomain. The aim of this study was to investigate if this alternative splicing has a function during development. We analysed the temporal and spatial distribution of the two mRNAs and over-expressed both isoforms in the developing retina. The results showed that the S-Morf4l1 mRNA is developmentally regulated. Over-expression of S-Morf4l1 using a retrovirus vector produced a clear phenotype with an increase of early-born neurons: retinal ganglion cells, horizontal cells and cone photoreceptor cells. Over-expression of L-Morf4l1 did not produce any distinguishable phenotype. The over-expression of S-Morf4l1 but not L-Morf4l1 also increased apoptosis in the infected regions. Our results suggest that the two Morf4l1 isoforms have different functions during retinogenesis and that Morf4l1 functions are fine-tuned by developmentally regulated alternative splicing. The data also suggest that Morf4l1 contributes to the regulation of cell genesis in the retina.

sted, utgiver, år, opplag, sider
2013. Vol. 51, nr 2, s. 615-628
Emneord [en]
Acetylation, Avian, Chromatin structure, Development, HAT, HDAC, Isoform, Histon, MRG15, MRGX, Neuron, RCAS, Retina, Splicing, Virus vector
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Identifikatorer
URN: urn:nbn:se:uu:diva-209850DOI: 10.1007/s12031-013-0034-4ISI: 000324637200047OAI: oai:DiVA.org:uu-209850DiVA, id: diva2:659907
Tilgjengelig fra: 2013-10-28 Laget: 2013-10-28 Sist oppdatert: 2022-01-28bibliografisk kontrollert

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Ring, HenrikFard, Shahrzad ShiraziNilsson, MatsHallbook, Finn

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