ArticleNucleic acids research2024
GTSF1 is required for transposon silencing in the unicellular eukaryote Paramecium tetraurelia.
Article in Nucleic acids research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- An evolutionarily conserved N-terminal domain of RRF-3 governs GTSF-1 binding in nematodes.EMBO reports · 2026Article
- 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
- Dual roles of two Tfdps in germline nuclear meiosis and somatic nuclear fragmentation during sexual reproduction in the unicellular organismMarine life science & technology · 2026Article
- Notes on the life cycle of a new marine ciliate,Marine life science & technology · 2026Article
- 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
- Soma-derived 30-nt small RNAs are coupled with chromosome breakage and precisely target nontransposon DNA against elimination inScience advances · 2025Article
- The PIWI-interacting protein Gtsf1 controls the selective degradation of small RNAs in Paramecium.Nucleic acids research · 2025Article
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Authors and funding
6 authors.
Funding
Abstract
The PIWI-interacting RNA (piRNA) pathway is crucial for transposon repression and the maintenance of genomic integrity. Gametocyte-specific factor 1 (GTSF1), a PIWI-associated protein indispensable for transposon repression, has been recently shown to potentiate the catalytic activity of PIWI in many metazoans. Whether the requirement of GTSF1 extends to PIWI proteins beyond metazoans is unknown. In this study, we identified a homolog of GTSF1 in the unicellular eukaryote Paramecium tetraurelia (PtGtsf1) and found that its role as a PIWI-cofactor is conserved. PtGtsf1 interacts with PIWI (Ptiwi09) and Polycomb Repressive Complex 2 and is essential for PIWI-dependent DNA elimination of transposons during sexual development. PtGtsf1 is crucial for the degradation of PIWI-bound small RNAs that recognize the organism's own genomic sequences. Without PtGtsf1, self-matching small RNAs are not degraded and results in an accumulation of H3K9me3 and H3K27me3, which may disturb transposon recognition. Our results demonstrate that the PIWI-GTSF1 interaction also exists in unicellular eukaryotes with a role in transposon silencing.
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