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DC Field | Value | Language |
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dc.contributor.author | Vrettos, Nicholas | - |
dc.contributor.author | Maragkakis, Manolis | - |
dc.contributor.author | Alexiou, Panagiotis | - |
dc.contributor.author | Mourelatos, Zissimos | - |
dc.date.accessioned | 2024-01-22T08:38:27Z | - |
dc.date.available | 2024-01-22T08:38:27Z | - |
dc.date.issued | 2017 | - |
dc.identifier.citation | Vrettos, N., Maragkakis, M., Alexiou, P., & Mourelatos, Z. (2017). Kc167, a widely used Drosophila cell line, contains an active primary piRNA pathway. RNA, 23(1), 108-118. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/117703 | - |
dc.description.abstract | PIWI family proteins bind to small RNAs known as PIWI-interacting RNAs (piRNAs) and play essential roles in the germline by silencing transposons and by promoting germ cell specification and function. Here we report that the widely used Kc167 cell line, derived from Drosophila melanogaster embryos, expresses piRNAs that are loaded to Aub and Piwi. Kc167 piRNAs are produced by a canonical, primary piRNA biogenesis pathway, from phased processing of precursor transcripts by the Zuc endonuclease, Armi helicase, and dGasz mitochondrial scaffold protein. Kc167 piRNAs derive from cytoplasmic transcripts, notably tRNAs and mRNAs, and their abundance correlates with that of parent transcripts. The expression of Aub is robust in Kc167, that of Piwi is modest, while Ago3 is undetectable, explaining the lack of transposon-related piRNA amplification by the Aub-Ago3, ping-pong mechanism. We propose that the default state of the primary piRNA biogenesis machinery is random transcript sampling to allow generation of piRNAs from any transcript, including newly acquired retrotransposons. This state is unmasked in Kc167, likely because they do not express piRNA cluster transcripts in sufficient amounts and do not amplify transposon piRNAs. We use Kc167 to characterize an inactive isoform of Aub protein. Since most Kc167 piRNAs are genic, they can be mapped uniquely to the genome, facilitating computational analyses. Furthermore, because Kc167 is a widely used and well-characterized cell line that is easily amenable to experimental manipulations, we expect that it will serve as an excellent system to study piRNA biogenesis and piRNA-related factors. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Cold Spring Harbor Lab | en_GB |
dc.rights | info:eu-repo/semantics/restrictedAccess | en_GB |
dc.subject | Zucchini | en_GB |
dc.subject | Transposons | en_GB |
dc.subject | Small interfering RNA | en_GB |
dc.subject | Transfer RNA -- Analysis | en_GB |
dc.title | Kc167, a widely used Drosophila cell line, contains an active primary piRNA pathway | 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 | 10.1261/rna.059139.116 | - |
dc.publication.title | RNA | en_GB |
Appears in Collections: | Scholarly Works - FacHScABS |
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