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Correction for Mendoza et al., Novel Isoforms of Dlg Are Fundamental for Neuronal Development in Drosophila

Journal of Neuroscience 14 March 2007, 27 (11) np
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Correction: In the article “Novel Isoforms of Dlg Are Fundamental for Neuronal Development in Drosophila” by Carolina Mendoza, Patricio Olguín, Gabriela Lafferte, Ulrich Thomas, Susanne Ebitsch, Eckart D. Gundelfinger, Manuel Kukuljan, and Jimena Sierralta, which appeared on pages 2093–2101 of the March 15, 2003 issue, the authors described a novel dlg isoform containing an extended N-terminal domain (dlgS97). Although the authors stand by their results on the description of the gene, its localization, and biochemical analysis, they have now found errors in their RNA interference (RNAi)-based approach to understand dlgS97 function. It was reported that injection of a double-stranded RNA (dsRNA) directed to the novel isoform dlgS97 correlated with strong defects in the development of the nervous system. However, the recent isolation of a dlgS97 null mutant that lacks defects in embryonic nervous system development, as well as their developmental expression showing that dlgS97 is not present at early embryonic stages, leads the authors to reexamine the RNAi experiments. They have found that the defects reported were attributed to unintended target effects caused by a low-complexity fragment of <50 bp at the end of the 1.2 kb RNAi construct. This conclusion is supported by new injection experiments in which the reported defects are not observed after injection of a dsRNA lacking the 50 bp framgnet. In addition, injection of 21 mers contained within this 50 bp region replicated the nervous system described in the paper. In conclusion, although the authors stand by the experiments describing the gene and its expression pattern, the conclusion from the RNAi studies are incorrect.

Additional data can be found at www.ceni.cl/sierralta-RNAi

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The Journal of Neuroscience: 27 (11)
Journal of Neuroscience
Vol. 27, Issue 11
14 Mar 2007
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Correction for Mendoza et al., Novel Isoforms of Dlg Are Fundamental for Neuronal Development in Drosophila
Journal of Neuroscience 14 March 2007, 27 (11) np

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Correction for Mendoza et al., Novel Isoforms of Dlg Are Fundamental for Neuronal Development in Drosophila
Journal of Neuroscience 14 March 2007, 27 (11) np
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