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Scedosporium apiospermum的纤维素结合分子:专注于粘合事件
André L S Santos1,2,3, Bianca A Silva4,5, Marcel M L da Cunha6
1Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil. andre@micro.ufrj.br.
概括
斯基多斯波里亚 (Scedosporium apiospermum) 在其表面使用纤维素结合分子来使宿主细胞粘附. 阻止这些分子减少了真菌的附着,揭示了感染过程中的关键机制.
科学领域:
- 菌类学 菌类学是指菌类学.
- 传染性疾病 传染性疾病
- 分子生物学分子生物学
背景情况:
- Scedosporium apiospermum是一种新兴的,多药耐药的真菌,会引起感染.
- 菌对宿主细胞的粘附对于感染至关重要,但在S. apiospermum.中尚不清楚.
- 纤维素结合是一种可疑的机制,增强了真菌的附着和感染.
研究的目的:
- 调查纤维素在S. apiospermum.粘附中的作用.
- 为了识别和描述S. apiospermum.上的纤维素结合分子.
- 评估这些分子在宿主细胞相互作用中的功能.
主要方法:
- 剂量依赖的粘附测试用固定和可溶性纤维素.
- 结合部位的酶 (trypsin) 和生化 (西方抹杀) 分析.
- 免疫光和免疫细胞化学用于定位结合分子.
- 使用纤维菌素和抗纤维菌素抗体进行粘附抑制试验.
主要成果:
- S. apiospermum conidia通过蛋白质性部位与纤维素结合,剂量取决于纤维素.
- 西方涂抹检测发现了7种纤维内素结合聚 (55-17kDa).
- 这些分子位于细胞壁上和细胞内.
- 纤维素前治疗减少了真菌对肺细胞的粘附;抗纤维素抗体也抑制了粘附.
结论:
- S. apiospermum 具有功能性纤维素结合分子.
- 这些分子在真菌对宿主细胞的粘附中起着重要作用.
- 了解这些相互作用可以为针对S. apiospermum感染的策略提供信息.
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