来自自动显示的Fv抗体库中的类似青素的仿制物抑制β-乳酸酶活性
Hyung Eun Bae1, Jaeyong Jung1, Jeong Soo Sung1
1Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Korea. jcpyun@yonsei.ac.kr.
Journal of materials chemistry. B
|May 6, 2025
概括
研究人员从Fv-抗体库中选了类似青素的仿制物,以检测β-乳酸酶抑制. 这些仿原体来自于互补性决定区域3 (CDR3) 序列,具有作为抑制剂的潜力.
科学领域:
- 生物技术是生物技术.
- 免疫学 免疫学 免疫学
- 酶学 是一种酶学.
背景情况:
- 抗生素耐药性是一个日益增长的全球健康威胁.
- 贝塔-乳酸酶赋予了对青素类抗生素的耐药性.
- 开发新的β-乳酸酶抑制剂至关重要.
研究的目的:
- 用于选具有β-乳酸酶抑制活性的青素类仿制物.
- 描述这些仿真物质的结合亲和力和抑制功能.
- 为了研究模托-β-乳糖酶相互作用的结构基础.
主要方法:
- 在E. coli表达的随机Fv抗体库的构建和选.
- 在磁珠上对抗青素抗体的不动化,以进行仿原体选择.
- 可溶性Fv抗体的表达和11-mer的合成.
- 表面等离子共振 (SPR) 用于结合亲和力 (KD) 测量.
- 对β-乳糖酶抑制活性进行色度测定.
- 用β-乳酸酶对CDR3序列进行分子对接分析.
主要成果:
- 从Fv-抗体库中成功选了类似青素的仿原体.
- 无论是Fv抗体还是合成的都显示出β-乳酸酶抑制活性.
- SPR测量证实了模原体与β-lactamase的结合亲和力.
- 对接分析显示,选的CDR3序列与β-乳糖酶活性位点的特定结合.
结论:
- 选的类似青素的仿制物具有显著的β-乳酸酶抑制潜力.
- 这些仿原体代表了新型抗菌策略的有希望的候选人.
- 这项研究强调了抗体库对于发现酶抑制剂的有用性.
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