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Bozzetti, M.P., Specchia, V., Cattenoz, P.B., Laneve, P., Geusa, A., Sahin, H.B., Di Tommaso, S., Friscini, A., Massari, S., Diebold, C., Giangrande, A. (2015). The Drosophila fragile X mental retardation protein participates in the piRNA pathway.  J. Cell Sci. 128(11): 2070--2084.
FlyBase ID
FBrf0228615
Publication Type
Research paper
Abstract

RNA metabolism controls multiple biological processes, and a specific class of small RNAs, called piRNAs, act as genome guardians by silencing the expression of transposons and repetitive sequences in the gonads. Defects in the piRNA pathway affect genome integrity and fertility. The possible implications in physiopathological mechanisms of human diseases have made the piRNA pathway the object of intense investigation, and recent work suggests that there is a role for this pathway in somatic processes including synaptic plasticity. The RNA-binding fragile X mental retardation protein (FMRP, also known as FMR1) controls translation and its loss triggers the most frequent syndromic form of mental retardation as well as gonadal defects in humans. Here, we demonstrate for the first time that germline, as well as somatic expression, of Drosophila Fmr1 (denoted dFmr1), the Drosophila ortholog of FMRP, are necessary in a pathway mediated by piRNAs. Moreover, dFmr1 interacts genetically and biochemically with Aubergine, an Argonaute protein and a key player in this pathway. Our data provide novel perspectives for understanding the phenotypes observed in Fragile X patients and support the view that piRNAs might be at work in the nervous system.

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    Language of Publication
    English
    Additional Languages of Abstract
    Parent Publication
    Publication Type
    Journal
    Abbreviation
    J. Cell Sci.
    Title
    Journal of Cell Science
    Publication Year
    1966-
    ISBN/ISSN
    0021-9533
    Data From Reference
    Alleles (17)
    Genes (8)
    Human Disease Models (1)
    Physical Interactions (3)
    Cell Lines (1)
    Natural transposons (8)
    Insertions (2)
    Experimental Tools (1)
    Transgenic Constructs (8)