ArticleJournal of cellular and molecular medicine2019
The N-terminal D1 domain of Treponema pallidum flagellin binding to TLR5 is required but not sufficient in activation of TLR5.
Article in Journal of cellular and molecular medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 15 citations in OpenAlex.
- Characterizing the immune infiltrate in secondary syphilis: implications for transmission and pathology.Frontiers in immunology · 2025Article
- Interactions between toll-like receptors signaling pathway and gut microbiota in host homeostasis.Immunity, inflammation and disease · 2024Review
- Recombinant Domain of Flagellin Promotes In Vitro a Chemotactic Inflammatory Profile in Human Immune Cells Independently of a Dendritic Cell Phenotype.Molecules (Basel, Switzerland) · 2023Article
- Bacterial Flagellar Filament: A Supramolecular Multifunctional Nanostructure.International journal of molecular sciences · 2021Review
- Research progress on Toll-like receptor signal transduction and its roles in antimicrobial immune responses.Applied microbiology and biotechnology · 2021Review
- The Role of Flagellin B inFrontiers in immunology · 2021Article
- Escape of TLR5 Recognition byFrontiers in immunology · 2020Article
- The N-terminal D1 domain of Treponema pallidum flagellin binding to TLR5 is required but not sufficient in activation of TLR5.Journal of cellular and molecular medicine · 2019Article
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Authors and funding
9 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Syphilis is a chronic bacterial infection caused by Treponema pallidum (T pallidum) and the pathogenesis that T pallidum infection induces immunopathological damages in skin and other tissues remains unclear. We have previously reported that recombinant flagellins of T pallidum can elicit IL-6 and IL-8 transcriptions via TLR5 pathway. To identify the domains which induced the pro-inflammatory activity and the importance of the interactions between TLR5 and domains, homology-based modelling and comparative structural analyses revealed that Tpflagellins can combine with TLR5 directly. Deletion mutations showed that the ND1 domain binding to TLR5 is required but not sufficient in TLR5 activation. Moreover, site-directed mutagenesis analysis indicated that the arginine residue (Tpflagellins R89) of the ND1 domain and its adjacent residues (Tpflagellins L93 and E113) constitute a hot spot that elicits IL-6, IL-8 transcriptions and TLR5 activation, and affects the binding of Tpflagellins to TLR5. Taken together, these results give insight into the pathogenesis of T pallidum and may contribute to the future design of Tpflagellins-based therapeutics and syphilis vaccine.
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