Cargando…

Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster

The functional significance of ribosome heterogeneity in development and differentiation is relatively unexplored. We present the first in vivo evidence of ribosome heterogeneity playing a role in specific mRNA translation in a multicellular eukaryote. Eukaryotic-specific ribosomal protein paralogue...

Descripción completa

Detalles Bibliográficos
Autores principales: Mageeney, Catherine M., Ware, Vassie C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The American Society for Cell Biology 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743460/
https://www.ncbi.nlm.nih.gov/pubmed/31188709
http://dx.doi.org/10.1091/mbc.E19-02-0086
_version_ 1783451291624669184
author Mageeney, Catherine M.
Ware, Vassie C.
author_facet Mageeney, Catherine M.
Ware, Vassie C.
author_sort Mageeney, Catherine M.
collection PubMed
description The functional significance of ribosome heterogeneity in development and differentiation is relatively unexplored. We present the first in vivo evidence of ribosome heterogeneity playing a role in specific mRNA translation in a multicellular eukaryote. Eukaryotic-specific ribosomal protein paralogues eRpL22 and eRpL22-like are essential in development and required for sperm maturation and fertility in Drosophila. eRpL22 and eRpL22-like roles in spermatogenesis are not completely interchangeable. Flies depleted of eRpL22 and rescued by eRpL22-like overexpression have reduced fertility, confirming that eRpL22-like cannot substitute fully for eRpL22 function, and that paralogues have functionally distinct roles, not yet defined. We investigated the hypothesis that specific RNAs differentially associate with eRpL22 or eRpL22-like ribosomes, thereby establishing distinct ribosomal roles. RNA-seq identified 12,051 transcripts (mRNAs/noncoding RNAs) with 50% being enriched on specific polysome types. Analysis of ∼10% of the most abundant mRNAs suggests ribosome specialization for translating groups of mRNAs expressed at specific stages of spermatogenesis. Further, we show enrichment of “model” eRpL22-like polysome-associated testis mRNAs can occur outside the germline within S2 cells transfected with eRpL22-like, indicating that germline-specific factors are not required for selective translation. This study reveals specialized roles in translation for eRpL22 and eRpL22-like ribosomes in germline differentiation.
format Online
Article
Text
id pubmed-6743460
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher The American Society for Cell Biology
record_format MEDLINE/PubMed
spelling pubmed-67434602019-10-16 Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster Mageeney, Catherine M. Ware, Vassie C. Mol Biol Cell Articles The functional significance of ribosome heterogeneity in development and differentiation is relatively unexplored. We present the first in vivo evidence of ribosome heterogeneity playing a role in specific mRNA translation in a multicellular eukaryote. Eukaryotic-specific ribosomal protein paralogues eRpL22 and eRpL22-like are essential in development and required for sperm maturation and fertility in Drosophila. eRpL22 and eRpL22-like roles in spermatogenesis are not completely interchangeable. Flies depleted of eRpL22 and rescued by eRpL22-like overexpression have reduced fertility, confirming that eRpL22-like cannot substitute fully for eRpL22 function, and that paralogues have functionally distinct roles, not yet defined. We investigated the hypothesis that specific RNAs differentially associate with eRpL22 or eRpL22-like ribosomes, thereby establishing distinct ribosomal roles. RNA-seq identified 12,051 transcripts (mRNAs/noncoding RNAs) with 50% being enriched on specific polysome types. Analysis of ∼10% of the most abundant mRNAs suggests ribosome specialization for translating groups of mRNAs expressed at specific stages of spermatogenesis. Further, we show enrichment of “model” eRpL22-like polysome-associated testis mRNAs can occur outside the germline within S2 cells transfected with eRpL22-like, indicating that germline-specific factors are not required for selective translation. This study reveals specialized roles in translation for eRpL22 and eRpL22-like ribosomes in germline differentiation. The American Society for Cell Biology 2019-08-01 /pmc/articles/PMC6743460/ /pubmed/31188709 http://dx.doi.org/10.1091/mbc.E19-02-0086 Text en © 2019 Mageeney and Ware. “ASCB®,” “The American Society for Cell Biology®,” and “Molecular Biology of the Cell®” are registered trademarks of The American Society for Cell Biology. http://creativecommons.org/licenses/by-nc-sa/3.0 This article is distributed by The American Society for Cell Biology under license from the author(s). Two months after publication it is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License.
spellingShingle Articles
Mageeney, Catherine M.
Ware, Vassie C.
Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster
title Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster
title_full Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster
title_fullStr Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster
title_full_unstemmed Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster
title_short Specialized eRpL22 paralogue-specific ribosomes regulate specific mRNA translation in spermatogenesis in Drosophila melanogaster
title_sort specialized erpl22 paralogue-specific ribosomes regulate specific mrna translation in spermatogenesis in drosophila melanogaster
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6743460/
https://www.ncbi.nlm.nih.gov/pubmed/31188709
http://dx.doi.org/10.1091/mbc.E19-02-0086
work_keys_str_mv AT mageeneycatherinem specializederpl22paraloguespecificribosomesregulatespecificmrnatranslationinspermatogenesisindrosophilamelanogaster
AT warevassiec specializederpl22paraloguespecificribosomesregulatespecificmrnatranslationinspermatogenesisindrosophilamelanogaster