Punica granatum sarcotesta lectin (PgTeL) impairs growth, structure, viability, aggregation, and biofilm formation ability of Staphylococcus aureus clinical isolates

Pollyanna Michelle da Silva, Mara Baldry, Pai Peng, Juliane Nancy de Oliveira Silva, Tatiana Soares, Fábio André Brayner, Luiz Carlos Alves, Ana Paula Sampaio Feitosa, Patrícia Maria Guedes Paiva, Hanne Ingmer, Thiago Henrique Napoleão*

*Corresponding author af dette arbejde
5 Citationer (Scopus)

Abstract

In this work, we evaluated the ability of Punica granatum sarcotesta lectin (PgTeL) to impair the growth and viability of the Staphylococcus aureus clinical isolates 8325–4 (non-resistant) and LAC USA300 (MRSA strain). The effects of this lectin on aggregating, hemolytic activity, biofilm-forming ability, and expression of virulence genes (hla, rnaIII, and spa) were also investigated. PgTeL showed antibacterial activity against 8325–4 and LAC USA300 strains by interfering with both the growth (MIC 50 of 6.25 and 12.5 μg/mL, respectively) and survival (MBC values of 25.0 and 50.0 μg/mL, respectively). Culture growth started only at the ninth (8325–4) and tenth (LAC USA300) hour in the presence of PgTeL at MIC 50 , while growth was detected since the first hour in the control. The lectin caused markedly altered cell morphology in both the strains. Although, at the MIC 50 , PgTeL caused structural alterations, most cells were still viable, while at the MBC it promoted cell injury and death. PgTeL showed anti-aggregation effect and exhibited antibiofilm activity against both the isolates. However, the lectin did not interfere with the hemolytic activity of LAC USA300 and with the expression of hla, rnaIII, and spa genes. In conclusion, PgTeL is a lectin with multiple inhibitory effects on S. aureus clinical isolates.

OriginalsprogEngelsk
TidsskriftInternational Journal of Biological Macromolecules
Vol/bind123
Sider (fra-til)600-608
Antal sider9
ISSN0141-8130
DOI
StatusUdgivet - 2019

Fingeraftryk

Dyk ned i forskningsemnerne om 'Punica granatum sarcotesta lectin (PgTeL) impairs growth, structure, viability, aggregation, and biofilm formation ability of Staphylococcus aureus clinical isolates'. Sammen danner de et unikt fingeraftryk.

Citationsformater