Please use this identifier to cite or link to this item:
https://www.um.edu.mt/library/oar/handle/123456789/117704
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Vourekas, Anastassios | - |
dc.contributor.author | Alexiou, Panagiotis | - |
dc.contributor.author | Vrettos, Nicholas | - |
dc.contributor.author | Maragkakis, Manolis | - |
dc.contributor.author | Mourelatos, Zissimos | - |
dc.date.accessioned | 2024-01-22T08:51:37Z | - |
dc.date.available | 2024-01-22T08:51:37Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Vourekas, A., Alexiou, P., Vrettos, N., Maragkakis, M., & Mourelatos, Z. (2016). Sequence-dependent but not sequence-specific piRNA adhesion traps mRNAs to the germ plasm. Nature, 531(7594), 390-394. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/117704 | - |
dc.description.abstract | The conserved Piwi family of proteins and piwi-interacting RNAs (piRNAs) have a central role in genomic stability, which is inextricably linked to germ-cell formation, by forming Piwi ribonucleoproteins (piRNPs) that silence transposable elements1. In Drosophila melanogaster and other animals, primordial germ-cell specification in the developing embryo is driven by maternal messenger RNAs and proteins that assemble into specialized messenger ribonucleoproteins (mRNPs) localized in the germ (pole) plasm at the posterior of the oocyte2,3. Maternal piRNPs, especially those loaded on the Piwi protein Aubergine (Aub), are transmitted to the germ plasm to initiate transposon silencing in the offspring germ line4,5,6,7. The transport of mRNAs to the oocyte by midoogenesis is an active, microtubule-dependent process8; mRNAs necessary for primordial germ-cell formation are enriched in the germ plasm at late oogenesis via a diffusion and entrapment mechanism, the molecular identity of which remains unknown8,9. Aub is a central component of germ granule RNPs, which house mRNAs in the germ plasm10,11,12, and interactions between Aub and Tudor are essential for the formation of germ granules13,14,15,16. Here we show that Aub-loaded piRNAs use partial base-pairing characteristics of Argonaute RNPs to bind mRNAs randomly in Drosophila, acting as an adhesive trap that captures mRNAs in the germ plasm, in a Tudor-dependent manner. Notably, germ plasm mRNAs in drosophilids are generally longer and more abundant than other mRNAs, suggesting that they provide more target sites for piRNAs to promote their preferential tethering in germ granules. Thus, complexes containing Tudor, Aub piRNPs and mRNAs couple piRNA inheritance with germline specification. Our findings reveal an unexpected function for piRNP complexes in mRNA trapping that may be generally relevant to the function of animal germ granules. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Nature Publishing Group UK | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Germ cells | en_GB |
dc.subject | Piwi genes | en_GB |
dc.subject | Ribonucleases | en_GB |
dc.subject | RNA interference | en_GB |
dc.title | Sequence-dependent but not sequence-specific piRNA adhesion traps mRNAs to the germ plasm | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1038/nature17150 | - |
dc.publication.title | Nature | en_GB |
Appears in Collections: | Scholarly Works - FacHScABS |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Sequence_dependent_but_not_sequence_specific_piRNA_adhesion_traps_mRNAs_to_the_germ_plasm.pdf Restricted Access | 2.08 MB | Adobe PDF | View/Open Request a copy |
Items in OAR@UM are protected by copyright, with all rights reserved, unless otherwise indicated.