ArticleBioMed research international2013
The TvLEGU-1, a legumain-like cysteine proteinase, plays a key role in Trichomonas vaginalis cytoadherence.
Article in BioMed research international, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed, 66 citations in OpenAlex.
- Trichomonas vaginalis Drug Targets and Their Role in Drug Discovery and Development.Pharmaceutical research · 2026Review
- Article
- Recent Advances in Biology, Host and Microbe Interactions of the Human Sexually Transmitted ParasiteInternational journal of molecular sciences · 2025Review
- TvLEGU-1 and TvLEGU-2 biomarkers for trichomoniasis are legumain-like cysteine peptidases secretedFrontiers in parasitology · 2025Article
- Distinct substrate specificities of the three catalytic subunits of the Trichomonas vaginalis proteasome.Protein science : a publication of the Protein Society · 2024Article
- Article
- An Atypical F-Actin Capping Protein Modulates Cytoskeleton Behaviors Crucial for Trichomonas vaginalis Colonization.Microbiology spectrum · 2023Article
- The interaction between adhesion protein 33 (TvAP33) and BNIP3 mediates the adhesion and pathogenicity of Trichomonas vaginalis to host cells.Parasites & vectors · 2023Article
- Distinct features of the host-parasite interactions between nonadherent and adherent Trichomonas vaginalis isolates.PLoS neglected tropical diseases · 2023Article
- Comparative Surfaceome Analysis of ClonalMicroorganisms · 2022Article
- Proteomic Analysis of Trichomonas vaginalis Phagolysosome, Lysosomal Targeting, and Unconventional Secretion of Cysteine Peptidases.Molecular & cellular proteomics : MCP · 2022Article
- VPS32, a member of the ESCRT complex, modulates adherence to host cells in the parasite Trichomonas vaginalis by affecting biogenesis and cargo sorting of released extracellular vesicles.Cellular and molecular life sciences : CMLS · 2021Article
- Know your enemy - transcriptome of myxozoanParasitology · 2021Article
- Article
- Molecular Targets Implicated in the Antiparasitic and Anti-Inflammatory Activity of the Phytochemical Curcumin in Trichomoniasis.Molecules (Basel, Switzerland) · 2020Article
- The effect of iron onParasitology · 2020Article
- Endomembrane Protein Trafficking Regulated by a TvCyP2 Cyclophilin in the Protozoan Parasite, Trichomonas vaginalis.Scientific reports · 2020Article
- Article
- Trichomonas vaginalis: Pathogenesis, Symbiont Interactions, and Host Cell Immune Responses.Trends in parasitology · 2018Review
- Extreme genome diversity in the hyper-prevalent parasitic eukaryote Blastocystis.PLoS biology · 2017Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The goal of this paper was to characterize a Trichomonas vaginalis cysteine proteinase (CP) legumain-1 (TvLEGU-1) and determine its potential role as a virulence factor during T. vaginalis infection. A 30-kDa band, which migrates in three protein spots (pI~6.3, ~6.5, and ~6.7) with a different type and level of phosphorylation, was identified as TvLEGU-1 by one- and two-dimensional Western blot (WB) assays, using a protease-rich trichomonad extract and polyclonal antibodies produced against the recombinant TvLEGU-1 (anti-TvLEGU-1r). Its identification was confirmed by mass spectrometry. Immunofluorescence, cell binding, and WB assays showed that TvLEGU-1 is upregulated by iron at the protein level, localized on the trichomonad surface and in lysosomes and Golgi complex, bound to the surface of HeLa cells, and was found in vaginal secretions. Additionally, the IgG and Fab fractions of the anti-TvLEGU-1r antibody inhibited trichomonal cytoadherence up to 45%. Moreover, the Aza-Peptidyl Michael Acceptor that inhibited legumain proteolytic activity in live parasites also reduced levels of trichomonal cytoadherence up to 80%. In conclusion, our data show that the proteolytic activity of TvLEGU-1 is necessary for trichomonal adherence. Thus, TvLEGU-1 is a novel virulence factor upregulated by iron. This is the first report that a legumain-like CP plays a role in a pathogen cytoadherence.
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