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Panton-Valentine leukocidin (PVL) isoforms among Staphylococcus aureus lineages isolated from hospitals in Rio de Janeiro, Brazil
Brazilian Journal of Microbiology ( IF 2.2 ) Pub Date : 2020-10-26 , DOI: 10.1007/s42770-020-00386-y
Raiane Cardoso Chamon 1, 2 , Tamara Lopes Rocha de Oliveira 2 , Rosana Barreto Rocha Ferreira 2 , Lilian Oliveira Moreira 3 , Kátia Regina Netto Dos Santos 2
Affiliation  

Panton-Valentine leukocidin (PVL) is a Staphylococcus aureus virulence factor codified by lukSF-PV genes. Single-nucleotide polymorphisms (SNPs) at lukSF-PV genes can lead to two PVL sequence variants (R and H) generating different PVL isoforms. This study analyzed lukSF-PV genes SNPs among four different clonal lineages (STs/CC 1, 5, 8, and 30) of nine S. aureus isolated at Brazilian hospitals. The sequenced products showed SNPs at seven sites (positions 121, 470, 527, 663, 856, 1396, and 1729), leading to non-synonymous substitutions in all isolates investigated. Our findings showed new R and H isoforms variants in S. aureus isolated in Brazil and suggest a possible relationship between H2b isoform and the ST30/CC30 lineage.

中文翻译:

从巴西里约热内卢医院分离的金黄色葡萄球菌谱系中的 Panton-Valentine 杀白细胞素 (PVL) 亚型

Panton-Valentine leukocidin (PVL) 是一种由 lukSF-PV 基因编码的金黄色葡萄球菌毒力因子。lukSF-PV 基因的单核苷酸多态性 (SNP) 可导致两个 PVL 序列变体(R 和 H)产生不同的 PVL 亚型。本研究分析了在巴西医院分离的 9 种金黄色葡萄球菌的四种不同克隆谱系(STs/CC 1、5、8 和 30)中的 lukSF-PV 基因 SNP。测序产物在七个位点(位置 121、470、527、663、856、1396 和 1729)显示 SNP,导致所有研究的分离株中出现非同义替换。我们的研究结果显示在巴西分离的金黄色葡萄球菌中出现了新的 R 和 H 同种型变体,并表明 H2b 同种型与 ST30/CC30 谱系之间可能存在关系。
更新日期:2020-10-26
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