Evidence map›Paper›PMID 16954400›Full record

ArticleInfection and immunity2006

A newly identified leptospiral adhesin mediates attachment to laminin.

Angela S Barbosa, Patricia A E Abreu, Fernanda O Neves, Marina V Atzingen, Mônica M Watanabe, Mônica L Vieira, Zenaide M Morais, Sílvio A Vasconcellos, Ana L T O Nascimento

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 96 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed, 1 pooled it
9.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

96 citing papers in PubMed, 1 synthesis or guideline pooled it, 232 citations in OpenAlex.

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  13. Evaluation ofFrontiers in microbiology · 2023
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  14. Host Cell Binding Mediated byInternational journal of molecular sciences · 2022
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  15. Review
  16. Motility of the Zoonotic SpirocheteInternational journal of molecular sciences · 2022
    Review
  17. Screening of Surface-Exposed Lipoproteins ofFrontiers in microbiology · 2022
    Article
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36 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Angela S BarbosaCentro de Biotecnologia, Instituto Butantan, Avenida Vital Brazil, 1500, 05503-900, São Paulo, Brazil.
Patricia A E Abreu
Fernanda O Neves
Marina V Atzingen
Mônica M Watanabe
Mônica L Vieira
Zenaide M Morais
Sílvio A Vasconcellos
Ana L T O Nascimento
Instituto Butantan · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pathogenic leptospires have the ability to survive and disseminate to multiple organs after penetrating the host. Several pathogens, including spirochetes, have been shown to express surface proteins that interact with the extracellular matrix (ECM). This adhesin-mediated binding process seems to be a crucial step in the colonization of host tissues. This study examined the interaction of putative leptospiral outer membrane proteins with laminin, collagen type I, collagen type IV, cellular fibronectin, and plasma fibronectin. Six predicted coding sequences selected from the Leptospira interrogans serovar Copenhageni genome were cloned, and proteins were expressed, purified by metal affinity chromatography, and characterized by circular dichroism spectroscopy. Their capacity to mediate attachment to ECM components was evaluated by binding assays. We have identified a leptospiral protein encoded by LIC12906, named Lsa24 (leptospiral surface adhesin; 24 kDa) that binds strongly to laminin. Attachment of Lsa24 to laminin was specific, dose dependent, and saturable. Laminin oxidation by sodium metaperiodate reduced the protein-laminin interaction in a concentration-dependent manner, indicating that laminin sugar moieties are crucial for this interaction. Triton X-114-solubilized extract of L. interrogans and phase partitioning showed that Lsa24 was exclusively in the detergent phase, indicating that it is a component of the leptospiral membrane. Moreover, Lsa24 partially inhibited leptospiral adherence to immobilized laminin. This newly identified membrane protein may play a role in mediating adhesion of L. interrogans to the host. To our knowledge, this is the first leptospiral adhesin with laminin-binding properties reported to date.

Indexed as

Adhesins, BacterialBacterial AdhesionLamininLeptospira interrogansProtein BindingAdhesins, BacterialLaminin

Identifiers

PMID16954400
PMCPMC1695492
OpenAlexW2162705236

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.