导出蛋白质结合校正的化学度用于体外试验.
1PMI R&D, Philip Morris Products S.A., Neuchâtel, Switzerland.
Clinical and translational science
|August 22, 2023
概括
准确的体外试验需要考虑蛋白质结合. 这项研究开发了计算校正化学度的模型,确保了药物开发和毒理学方面的生理学相关结果.
科学领域:
- 药理学 药理学是指药理学的学科.
- 毒理学 毒理学 毒理学
- 生物化学 生物化学
背景情况:
- 在体外试验传统上使用细胞培养基,其中5%-10%的胎儿牛血清 (FBS).
- 由于物理化学性质和测试条件,可变的未结合的细胞外化学度可能会发生,这使得评估化学强度和度-反应关系的评估变得复杂.
- 准确解释体外数据需要了解化学品的未结合分数.
研究的目的:
- 开发和应用蛋白质结合模型来计算校正的化学度 in vitro.
- 为了确定含有FBS的介质中具有不同结合亲和力的化学物质的蛋白质结合校正的意义.
- 为研究人员提供一个工具,以便轻松计算这些调整的度.
主要方法:
- 利用一和两种蛋白质结合模型来估计蛋白质结合纠正的化学度.
- 评估了ceftizoxime,moxifloxacin和尼古丁的蛋白质结合,并指出它们在5%-10%的FBS中具有较低的结合亲和力.
- 强调需要对中度和高度蛋白质结合的化学物质进行校正.
主要成果:
- 在5%-10%的FBS中观察到ceftizoxime,moxifloxacin和尼古丁的低蛋白质结合 (<5%),被认为是可以忽略不计的.
- 在标准细胞培养基中发现了中度和高度蛋白质结合的化学物质的未结合度的显著变化.
- 蛋白结合校正对于准确的体外度-反应评估至关重要.
结论:
- 在体外的药理学和毒理学评估需要蛋白质结合调整的度来确定生理学相关性.
- 在5%-10%的FBS标准体外试验条件下,许多化学品的未结合度可能会导致不准确的未结合度.
- 提供了一个Excel工具,以方便在体外研究中计算蛋白质结合校正度.
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