能否通过溶性-扩散模型预测zwitterionic化合物的膜透性?
Andrea Ebert1, Carolin Dahley1
1Department of Computational Biology & Chemistry, Helmholtz Centre for Environmental Research (UFZ), Permoserstraße 15, 04318 Leipzig, Germany.
中性形式,而不是zwitterionic形式,决定了zwitterionic化合物的膜透性. 这一发现简化了使用溶解度-扩散模型的药物透率的in silico预测.
科学领域:
- 药理学 药理学是指药理学的学科.
- 生物物理学的生物物理.
- 计算化学的计算化学
背景情况:
- 兹维特里昂具有正负电荷,因此具有净中性电荷.
- 常常假定zwitterionic化合物的膜透性低于它们的中性对应物.
- 目前尚不清楚zwitterionic或中性形式是否主导药物透性,这使in silico的预测变得复杂.
研究的目的:
- 重新评估现有的zwitterionic化合物的体外透性数据.
- 为了确定在zwitterionic药物中负责膜透性的占主导地位的物种.
- 通过溶解度-扩散模型评估zwitterionic化合物透性的可预测性.
主要方法:
- 从Caco-2/MDCK细胞测试中重新评估文献数据.
- 严格的排除标准的应用,以过出混的运输效应.
- 使用溶解度-扩散模型进行分析,以预测内在透度.
主要成果:
- 中性分量的内在透性被溶解度-扩散模型准确地预测 (RMSE = 1.21; n = 18).
- 发现zwitterionic物种的透性可以忽略不计.
- 这项研究表明,只有中性物种对膜透性有意义.
结论:
- 兹维特化合物的膜透性主要由它们的中性形式来决定.
- 溶解度-扩散模型可以有效地预测zwitterionic化合物的膜透性.
- 这项研究简化了对zwitterionic药物的in silico透性预测.
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