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Defining the Program of Maternal mRNA Translation during In vitro Maturation using a Single Oocyte Reporter Assay
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Selective Destabilization of Transcripts by mRNA Decapping Regulates Oocyte Maturation and Innate Immunity Gene
Fivos Borbolis1, Dimitra Ranti1, Maria-Despina Papadopoulou1
1Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece.
Biology
|February 25, 2023
Summary
RNA decapping, crucial for gene regulation, impacts aging and lifespan. This study reveals DCAP-1
Area of Science:
- Molecular Biology
- Genetics
- Aging Research
Background:
- RNA decapping, primarily by the DCP2/DCP1 holoenzyme, is key in mRNA decay and gene expression.
- Decapping factors accumulate in aging *C. elegans*, and reduced activity shortens lifespan, but the precise link is unclear.
Purpose of the Study:
- To investigate the role of DCAP-1 in gene regulation during aging.
- To identify transcriptome differences between wild-type and *dcap-1* mutant nematodes.
Main Methods:
- Comparative microarray analysis of mid-aged *dcap-1* mutant and wild-type *C. elegans*.
Main Results:
- DCAP-1 silences spermatogenic genes in late oogenesis.
- DCAP-1 suppresses age-related immune gene upregulation by destabilizing PQM-1 mRNA.
- Impaired DCAP-1 control of PQM-1 negatively affects lifespan but reduces polyglutamine toxicity.
Conclusions:
- DCAP-1 plays a critical role in regulating gene expression during aging.
- Decapping-mediated control of PQM-1 influences lifespan and polyglutamine-related disease pathology.
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