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- W2577237479 abstract "Morphogenesis requires the dynamic regulation of gene expression, including transcription, mRNA maturation and translation. Dysfunction of the general mRNA splicing machinery can cause surprisingly specific cellular phenotypes, but the basis for these effects is not clear. Here we show that the Drosophila faint sausage (fas) locus, implicated in epithelial morphogenesis and previously reported to encode a secreted immunoglobulin domain protein, in fact encodes a subunit of the spliceosome-activating Prp19 complex, which is essential for efficient pre-mRNA splicing. Loss of zygotic fas function globally impairs the efficiency of splicing, and is associated with widespread retention of introns in mRNAs and dramatic changes in gene expression. Surprisingly, despite these general effects, zygotic fas mutants show specific defects in tracheal cell migration during mid-embryogenesis when maternally supplied splicing factors have declined. We propose that tracheal branching, which relies on dynamic changes in gene expression, is particularly sensitive for efficient spliceosome function. Our results reveal an entry point to study requirements of the splicing machinery during organogenesis and provide a better understanding of disease phenotypes associated with mutations in general splicing factors." @default.
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- W2577237479 date "2017-01-01" @default.
- W2577237479 modified "2023-10-02" @default.
- W2577237479 title "Faithful mRNA splicing depends on the Prp19 complex subunit<i>faint sausage</i>and is required for tracheal branching morphogenesis in<i>Drosophila</i>" @default.
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- W2577237479 doi "https://doi.org/10.1242/dev.144535" @default.
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