TY - JOUR
T1 - Punica granatum sarcotesta lectin (PgTeL) impairs growth, structure, viability, aggregation, and biofilm formation ability of Staphylococcus aureus clinical isolates
AU - da Silva, Pollyanna Michelle
AU - Baldry, Mara
AU - Peng, Pai
AU - de Oliveira Silva, Juliane Nancy
AU - Soares, Tatiana
AU - Brayner, Fábio André
AU - Alves, Luiz Carlos
AU - Feitosa, Ana Paula Sampaio
AU - Paiva, Patrícia Maria Guedes
AU - Ingmer, Hanne
AU - Napoleão, Thiago Henrique
PY - 2019
Y1 - 2019
N2 -
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.
AB -
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.
KW - agr system
KW - Antibacterial activity
KW - Fruit lectin
KW - MRSA isolate
KW - Pomegranate
U2 - 10.1016/j.ijbiomac.2018.11.030
DO - 10.1016/j.ijbiomac.2018.11.030
M3 - Journal article
C2 - 30414418
AN - SCOPUS:85056659281
SN - 0141-8130
VL - 123
SP - 600
EP - 608
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -