ArticlePLoS pathogens2022
H2B.V demarcates divergent strand-switch regions, some tDNA loci, and genome compartments in Trypanosoma cruzi and affects parasite differentiation and host cell invasion.
Article in PLoS pathogens, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 31 citations in OpenAlex.
- First genome-wide centromere map of Trypanosoma cruzi suggests linear and 3D compartment boundaries and spatial clustering.BMC genomics · 2026Article
- New Histone H4 variant and H2B variant Exhibits distinct genomic distributions, chromatin affinities, and dynamics throughout life and cell cycle of Trypanosoma cruzi.PLoS pathogens · 2026Article
- Article
- Article
- A divide-and-conquer approach to uncover the genomic structure of the highly virulent RA strain of Trypanosoma cruzi.Scientific reports · 2025Article
- Genomic Organization of Trypanosoma cruzi tRNA Genes.Genome biology and evolution · 2025Article
- Hidden origami inmBio · 2025Article
- Trypanosomatid histones: the building blocks of the epigenetic code of highly divergent eukaryotes.The Biochemical journal · 2025Review
- Review
- The 50th Anniversary Conference - Caxambu 2024.Memorias do Instituto Oswaldo Cruz · 2025Article
- Article
- A phased genome assembly of a Colombian Trypanosoma cruzi TcI strain and the evolution of gene families.Scientific reports · 2024Article
- Immunoprecipitation of RNA-DNA hybrid interacting proteins in Trypanosoma brucei reveals conserved and novel activities, including in the control of surface antigen expression needed for immune evasion by antigenic variation.Nucleic acids research · 2023Article
- Genome-wide chromatin interaction map for Trypanosoma cruzi.Nature microbiology · 2023Article
- Histone variant H2B.Z acetylation is necessary for maintenance of Toxoplasma gondii biological fitness.Biochimica et biophysica acta. Gene regulatory mechanisms · 2023Article
- Histone variant H2B.Z acetylation is necessary for maintenance ofbioRxiv : the preprint server for biology · 2023Article
- Gene editing of putative cAMP and CaThe Journal of eukaryotic microbiologyArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
14 authors at 3 institutions in 2 countries.
Funding
Abstract
Histone variants play a crucial role in chromatin structure organization and gene expression. Trypanosomatids have an unusual H2B variant (H2B.V) that is known to dimerize with the variant H2A.Z generating unstable nucleosomes. Previously, we found that H2B.V protein is enriched in tissue-derived trypomastigote (TCT) life forms, a nonreplicative stage of Trypanosoma cruzi, suggesting that this variant may contribute to the differences in chromatin structure and global transcription rates observed among parasite life forms. Here, we performed the first genome-wide profiling of histone localization in T. cruzi using epimastigotes and TCT life forms, and we found that H2B.V was preferentially located at the edges of divergent transcriptional strand switch regions, which encompass putative transcriptional start regions; at some tDNA loci; and between the conserved and disrupted genome compartments, mainly at trans-sialidase, mucin and MASP genes. Remarkably, the chromatin of TCT forms was depleted of H2B.V-enriched peaks in comparison to epimastigote forms. Interactome assays indicated that H2B.V associated specifically with H2A.Z, bromodomain factor 2, nucleolar proteins and a histone chaperone, among others. Parasites expressing reduced H2B.V levels were associated with higher rates of parasite differentiation and mammalian cell infectivity. Taken together, H2B.V demarcates critical genomic regions and associates with regulatory chromatin proteins, suggesting a scenario wherein local chromatin structures associated with parasite differentiation and invasion are regulated during the parasite life cycle.
Indexed as
Identifiers
What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.