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Título: | Increased LIS1 expression affects human and mouse brain development |
Autor: | Bi, Weimin; Sapir, Tamar; Shchelochkov, Oleg A.; Zhang, Feng; Withers, Marjorie A.; Hunter, Jill V.; Levy, Talia; Shinder, Vera; Peiffer, Daniel A.; Gunderson, Kevin L.; Nezarati, Marjan M.; Shotts, Vern Ann; Amato, Stephen S.; Savage, Sarah K.; Harris, David James; Day-Salvatore, Debra-Lynn; Horner, Michele; Lu, Xin-Yan; Sahoo, Trilochan; Yanagawa, Yuchio; Beaudet, Arthur L.; Cheung, Sau Wai; Martínez, Salvador CSIC ORCID; Lupski, James R.; Reiner, Orly | Palabras clave: | LIS1 Chromosome 17 Gene deletion Miller-Dieker syndrome Brain abnormalities Human genetics |
Fecha de publicación: | 11-ene-2009 | Editor: | Nature Publishing Group | Citación: | Nature Genetics, doi:10.1038/ng.302 | Resumen: | Deletions of the PAFAH1B1 gene (encoding LIS1) in 17p13.3 result in isolated lissencephaly sequence, and extended deletions including the YWHAE gene (encoding 14-3-3) cause Miller-Dieker syndrome. We identified seven unrelated individuals with submicroscopic duplication in 17p13.3 involving the PAFAH1B1 and/or YWHAE genes, and using a 'reverse genomics' approach, characterized the clinical consequences of these duplications. Increased PAFAH1B1 dosage causes mild brain structural abnormalities, moderate to severe developmental delay and failure to thrive. Duplication of YWHAE and surrounding genes increases the risk for macrosomia, mild developmental delay and pervasive developmental disorder, and results in shared facial dysmorphologies. Transgenic mice conditionally overexpressing LIS1 in the developing brain showed a decrease in brain size, an increase in apoptotic cells and a distorted cellular organization in the ventricular zone, including reduced cellular polarity but preserved cortical cell layer identity. Collectively, our results show that an increase in LIS1 expression in the developing brain results in brain abnormalities in mice and humans. | Descripción: | 10 pages, 7 figures.-- Supplementary information (Suppl. data, 17 pages, and suppl. movies S1-S2) available at: http://www.nature.com/ng/journal/vaop/ncurrent/suppinfo/ng.302_S1.html | Versión del editor: | http://dx.doi.org/10.1038/ng.302 | URI: | http://hdl.handle.net/10261/9558 | DOI: | 10.1038/ng.302 | ISSN: | 1061-4036 |
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