单域VHH纳米体的发展,这些纳米体的向是Candida albicans的细胞表面
Giuseppe Buda De Cesare1,2, Frank M Sauer3, Anna Kolecka4
1Department of Microbiology and Molecular Genetics, The University of Texas Health Science Center at Houston, Houston, Texas, USA.
Microbiology spectrum
|October 7, 2024
概括
研究人员开发了VHH纳米体来检测Candida albicans感染. 这些单变域重链 (VHH) 抗体特别与C. albicans细胞表面蛋白结合,显示出诊断应用的潜力.
科学领域:
- 菌类学和传染病的研究
- 免疫技术是一种免疫技术.
- 生物技术是生物技术.
背景情况:
- 香虫 (Candida albicans) 导致严重的侵入性感染,这给诊断和治疗带来了挑战.
- 在C. albicans的耐药性导致治疗失败.
- 对C. albicans,尤其是耐药菌株的快速诊断缺乏.
研究的目的:
- 开发VHH (重链上的单个可变域) 纳米体,用于检测C. albicans.
- 在耐药C. albicans分离物上生成针对抗原的特定纳米体.
- 探索VHH纳米体对抗C. albicans的诊断潜力.
主要方法:
- 用C. albicans细胞对驼进行免疫接种.
- 用于VHH纳米体隔离的菌体显示库的生成.
- 针对耐药性和对敏感性C. albicans分离物进行反选择.
- 结合性测试 (ELISA,光显微镜) 用于表征VHH的特异性和目标 (例如,Als4,Als3).
主要成果:
- 选择了30种针对C. albicans的各种VHH纳米体.
- VHH纳米体显示出明显的结合模式,准细胞极和叶.
- VHH19识别了Als4粘附,而VHH14识别了Als3侵入.
- 没有发现纳米体对耐药临床分离物具有选择性.
结论:
- 这项研究成功地产生了C. albicans特定的VHH纳米体.
- VHH纳米体识别了特定的C. albicans细胞表面蛋白质,如Als4和Als3.
- 这种方法表明了VHH纳米体对C. albicans诊断和研究的潜力.
相关概念视频
01:31Immunoglobulin-like Cell Adhesion Molecules
Immunoglobulin-like cell adhesion molecules or Ig-CAMs are a versatile group of cell surface glycoproteins belonging to the immunoglobulin protein superfamily. Ig-CAMs possess the characteristic immunoglobulin protein domains and other domains such as the fibronectin type III domain. The Ig domains are glycosylated to varying degrees in different Ig-CAMs.
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
Ig-CAMs exhibit either homophilic binding (to other Ig-CAMs) or heterophilic binding (to other ligands such as integrins). While most Ig-CAMs...
01:20Candidiasis
Candidiasis is a fungal infection caused by opportunistic species of Candida. It can affect various anatomical sites, including the skin, oral cavity, nails, and genitourinary tract. Among its forms, vaginal candidiasis is the most common type of mucosal infection. It typically results from the overgrowth of Candida albicans in the vaginal mucosa. Under normal conditions, C. albicans exists as a commensal organism within the vaginal microbiota, regulated by the dominance of lactobacilli, which...