ArticleNucleic acids research2025
The PIWI-interacting protein Gtsf1 controls the selective degradation of small RNAs in Paramecium.
Article in Nucleic acids research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Gametocyte-Specific Factor 1 Is Essential for Male Fertility and Transposon Homeostasis inInsects · 2026Article
- Host-transposable element coexistence: a matter of resistance, tolerance and trade-off.The EMBO journal · 2026Review
- The tiny germline chromosomes of Paramecium aurelia have an exceptionally high recombination rate and are capped by a new class of Helitrons.BMC biology · 2026Article
- A developmental condensin I complex assists the Paramecium PiggyMac domesticated transposase during programmed DNA elimination.Nucleic acids research · 2026Article
- A H3K27me3 reader complex couples H3K27me3 accumulation to nascent transcription of transposable elements in Paramecium.Genome biology · 2026Article
- piR-43452 suppresses bladder cancer progression and enhances gemcitabine sensitivity via GTSF1/PIWIL4-mediated LRP1 mRNA destabilization.Translational oncology · 2026Article
- A histone methyltransferase-independent function of PRC2 controls small RNA dynamics during programmed DNA elimination in Paramecium.Nucleic acids research · 2025Article
- How and when organisms edit their own genomes.Nature genetics · 2025Review
- Cracking the code: how piRNA pathway shapes spermatogenesis and combats male infertility.Frontiers in cell and developmental biology · 2025Review
- GTSF1 is required for transposon silencing in the unicellular eukaryote Paramecium tetraurelia.Nucleic acids research · 2024Article
- Two paralogous PHD finger proteins participate in natural genome editing in Paramecium tetraurelia.Journal of cell science · 2024Article
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Authors and funding
12 authors.
Funding
Abstract
Ciliates undergo developmentally programmed genome elimination, in which small RNAs direct the removal of transposable elements (TEs) during the development of the somatic nucleus. Twenty-five nucleotide scanRNAs (scnRNAs) are produced from the entire germline genome and transported to the maternal somatic nucleus, where selection of scnRNAs corresponding to germline-specific sequences is thought to take place. Selected scnRNAs then guide the elimination of TEs in the developing somatic nucleus. How germline-specific scnRNAs are selected remains to be determined. Here, we provide important mechanistic insights into the scnRNA selection pathway by identifying a Paramecium homolog of Gtsf1 as essential for the selective degradation of scnRNAs corresponding to retained somatic sequences. Consistently, we also show that Gtsf1 is localized in the maternal somatic nucleus where it associates with the scnRNA-binding protein Ptiwi09. Furthermore, we demonstrate that the scnRNA selection process is critical for genome elimination. We propose that Gtsf1 is required for the coordinated degradation of Ptiwi09-scnRNA complexes that pair with target RNA via the ubiquitin pathway, similarly to the mechanism suggested for microRNA target-directed degradation in metazoans.
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