人类血管内皮生长因子的PEGylation
Alena Maria Wolkersdorfer1, Isabelle Jugovic1, Lena Scheller1
1Institute of Pharmacy and Food Chemistry, University of Würzburg, University, Am Hubland, Würzburg DE-97074, Germany.
ACS biomaterials science & engineering
|June 9, 2023
概括
研究人员开发了聚乙烯糖醇 (PEG) 修饰的血管内皮生长因子A-165 (VEGF-A165) 生物结合物. 这些生物结合物保持了VEGF-A165的存在.
科学领域:
- 生物技术和生物医学工程 生物技术和生物医学工程
- 分子和细胞生物学分子和细胞生物学
背景情况:
- 血管内皮生长因子A-165 (VEGF-A165) 对于新血管化至关重要,但血清半衰期短,限制了治疗应用.
- 开发增强VEGF-A165稳定性的策略对于其在治疗血管疾病中的有效使用至关重要.
研究的目的:
- 设计和表征VEGF-A165与聚乙烯糖醇 (PEG) 的生物结合物,以克服其短的血清半衰期.
- 为了评估PEGylated VEGF-A165.5的生物活性和结构特性.
主要方法:
- 复合人体VEGF-A165被表达和净化,证实纯度>90%和生物活性 (EC50 = 0.9 ng/mL).
- 通过使用希夫基反应,然后进行还原性氨基化,实现了VEGF-A165的PEGylation.
- 纯化生物结合物被分析为纯度,生物活性和水力动力半径.
主要成果:
- 两种不同的PEGylated VEGF-A165物种,每个二极体有一个或两个PEG分子,成功地产生了纯度>90%.
- 由此产生的生物结合物保留了野生类型的生物活性,证明了保存的治疗潜力.
- 基化显著增加了VEGF-A165的水力动力半径,这是延长血清半衰期的关键指标.
结论:
- 基化是一种有效的策略,可以创建稳定的VEGF-A165生物结合物,具有增强的药理动力学特性.
- 这些VEGF-A165生物结合物有望改善血管再生和疾病治疗的治疗结果.
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