ArticlePLoS neglected tropical diseases2025
Development and application of a novel beta-tubulin genotyping tool reveals host-specific transmission cluster in Balantioides coli.
Article in PLoS neglected tropical diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- A novel dual-locus genotyping approach reveals epidemiological characteristics ofFood and waterborne parasitology · 2026Article
- Development of a multilocus sequence typing tool forJournal of clinical microbiology · 2026Article
- Molecular Detection of Balantioides coli in Pigs Employing the Traditional PCR and a Novel Cross-Priming Amplification-Based Lateral Flow Assay.Transboundary and emerging diseases · 2026Article
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9 authors.
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Abstract
Balantioides coli is a zoonotic ciliated protozoan that infects humans and other mammals. Conventional and ITS-based genotyping approaches have limitations that hinder precise molecular epidemiological investigations. The objective of this study was to develop a new β-tubulin gene-based approach to enhance the detection and genotyping of B. coli. We performed single-cell isolation and whole-genome sequencing on two B. coli isolates from pigs and two from guinea pigs. We then used the β-tubulin gene sequences to design PCR primers for the new genotyping assay. We validated the assay using 56 ITS-confirmed B. coli-positive fecal DNA samples from pigs, cattle, sheep, and guinea pigs. Phylogenetic analyses were conducted using both β-tubulin and ITS sequences. The β-tubulin-based nested PCR assay exhibited 100% detection efficiency and greater specificity than ITS-based methods. Phylogenetic analysis of the β-tubulin gene sequences classified B. coli into three genotypes (I-III). Genotype III appears to be specific to guinea pigs. Genotypes I and II were found across multiple hosts, indicating potential cross-species transmission. Of the five full-length B. coli β-tubulin sequences obtained in this study, 264 polymorphic sites (19.8%) were identified, including both synonymous and non-synonymous mutations. Frequent recombination events within the β-tubulin locus were detected, indicating substantial genetic diversity. Therefore, the β-tubulin gene is a robust marker for genotyping and epidemiological studies of B. coli. The novel nested PCR assay overcomes the limitations of ITS-based methods and has produced data revealing previously unrecognized genetic diversity and host specificity patterns of B. coli.
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