通过血管内皮生长因子的蛋白模拟物调节血管生成
Sami Abdulkadir1, Chunpu Li1,2, Wei Jiang1,3
1Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States.
Journal of the American Chemical Society
|December 30, 2021
概括
通过向VEGF受体来选择性地控制血管形成. 这些稳定的分子通过切换血管信号来为癌症等疾病提供潜在的治疗应用.
科学领域:
- 生物化学
- 分子生物学
- 癌症研究
背景情况:
- 血管新生,新血管的形成,对于瘤生长和转移至关重要.
- 血管内皮生长因子A (VEGF-A) 与其受体 (VEGFRs) 的结合驱动血管生成.
- 正确的亲血管生成信号平衡尚未完全理解,这阻碍了治疗操作.
研究的目的:
- 设计和评估模仿VEGF关键结合接口 (螺旋-α1) 的硫-γ-AA基化剂,用于VEGFR识别.
- 调查这些类药物对血管生成的差异性影响.
- 探索它们作为VEGFR信号传递的治疗剂和分子探针的潜力.
主要方法:
- 基于硫-γ-AA的螺旋模仿剂的设计.
- 对VEGF受体的结合 afinity 的评估.
- 在体外血管生成测试以评估功能效应 (抑制与激活).
- 对VEGFR-1和VEGFR-2的选择性结合的分析
- 对蛋白质溶解水解的稳定性评估.
主要成果:
- 这两种被设计的模剂 (V2和V3) 都与VEGF受体密切结合.
- 而V2则有效地激活了它.
- 观察到选择性结合:V2与VEGFR-1和V3与VEGFR-2.
- V2和V3都显示出对蛋白质分解的高稳定性.
结论:
- 硫-γ-AA可以有效地模仿α-螺旋域用于蛋白质识别和蛋白质相互作用的调制.
- V2和V3的独特血管效应突显了它们选择性地切换血管信号通路的潜力.
- 这些类药物代表了治疗疾病的有希望的候选者,这些疾病是由血管失衡驱动的,并且作为研究VEGFR信号机制的工具.
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