ArticleNucleic acids research2020
Developmental regulation of edited CYb and COIII mitochondrial mRNAs is achieved by distinct mechanisms in Trypanosoma brucei.
Article in Nucleic acids research, 2020. 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, 14 citations in OpenAlex.
- Kinetoplast DNA structure, RNA editing patterns and small respiratory Complex I in Trypanosoma musculi.Communications biology · 2025Article
- Comparative mitochondrial genome and transcriptome analyses reveal strain-specific features of RNA editing in Trypanosoma brucei.Nucleic acids research · 2025Article
- Mitochondrial DNA Structure inPathogens (Basel, Switzerland) · 2025Review
- KRBP72 facilitates ATPase-dependent editing progression through a structural roadblock in mitochondrial A6 mRNA.Nucleic acids research · 2025Article
- KREH2 helicase represses ND7 mRNA editing in procyclic-stage Trypanosoma brucei by opposite modulation of canonical and 'moonlighting' gRNA utilization creating a proposed mRNA structure.Nucleic acids research · 2024Article
- RESC14 and RESC8 cooperate to mediate RESC function and dynamics during trypanosome RNA editing.Nucleic acids research · 2024Article
- RNA editing catalytic complexes edit multiple mRNA sites non-processively in Trypanosoma brucei.Molecular and biochemical parasitology · 2023Article
- Trypanosome RNA helicase KREH2 differentially controls non-canonical editing and putative repressive structure via a novel proposed 'bifunctional' gRNA in mRNA A6.Nucleic acids research · 2023Article
- KREH1 RNA helicase activity promotes utilization of initiator gRNAs across multiple mRNAs in trypanosome RNA editing.Nucleic acids research · 2023Article
- Conserved and transcript-specific functions of the RESC factors, RESC13 and RESC14, in kinetoplastid RNA editing.RNA (New York, N.Y.) · 2022Article
- The Complete Mitochondrial DNA ofFrontiers in cellular and infection microbiology · 2021Article
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
Abstract
Trypanosoma brucei is a parasitic protozoan that undergoes a complex life cycle involving insect and mammalian hosts that present dramatically different nutritional environments. Mitochondrial metabolism and gene expression are highly regulated to accommodate these environmental changes, including regulation of mRNAs that require extensive uridine insertion/deletion (U-indel) editing for their maturation. Here, we use high throughput sequencing and a method for promoting life cycle changes in vitro to assess the mechanisms and timing of developmentally regulated edited mRNA expression. We show that edited CYb mRNA is downregulated in mammalian bloodstream forms (BSF) at the level of editing initiation and/or edited mRNA stability. In contrast, edited COIII mRNAs are depleted in BSF by inhibition of editing progression. We identify cell line-specific differences in the mechanisms abrogating COIII mRNA editing, including the possible utilization of terminator gRNAs that preclude the 3' to 5' progression of editing. By examining the developmental timing of altered mitochondrial mRNA levels, we also reveal transcript-specific developmental checkpoints in epimastigote (EMF), metacyclic (MCF), and BSF. These studies represent the first analysis of the mechanisms governing edited mRNA levels during T. brucei development and the first to interrogate U-indel editing in EMF and MCF life cycle stages.
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