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在使用UHPLC-MS/MS的老鼠中,MRTX1133的药理动力学,生物可用性和组织分布
Wei Lu1,2, Rong Zeng3, Meng Pan4
1Department of Pharmacy, Taihe Hospital, Hubei University of Medicine, Shiyan, China.
Frontiers in pharmacology
|January 3, 2025
概括
这项研究描述了MRTX1133的药理动力学,MRTX1133是一种KRAS (G12D) 抑制剂,在临床前模型中显示了快速吸收和广泛分布. 研究结果支持其在未来对固体瘤的临床试验中使用.
科学领域:
- 药理学和毒理学 药理学和毒理学
- 瘤学 药物开发 药物开发
背景情况:
- MRTX1133是一种新型的,选择性抑制剂,向KRAS (G12D) 突变,有望延迟固体瘤的进展.
- 关于MRTX1133的吸收,分布和分泌 (ADME) 概况的数据有限,这对其临床发展至关重要.
研究的目的:
- 开发和验证一种敏感的生物分析方法,用于在生物矩阵中量化MRTX1133.
- 为了研究MRTX1133在老鼠中的药理动力学特性,生物可用性,组织分布和分泌.
主要方法:
- 超高性能液体染色学 - 协同四极质谱学 (UHPLC-MS/MS) 用于MRTX1133的确定.
- 该方法在老鼠血,组织同质物和尿液中的准确性,精度和矩阵效应方面得到了验证.
- 在口服 (25 mg/kg) 和静脉注射 (5 mg/kg) 后评估了药物动力学参数.
主要成果:
- 该UHPLC-MS/MS方法显示出优异的线性 (r2>0.99),准确度 (85-115%) 和精度 (±10%).
- 在口服后,MRTX1133表现出快速吸收 (Tmax 45分钟),Cmax为129.90 ± 25.23 ng/mL.
- 口服生物利用率为2.92%,MRTX1133在主要器官中广泛分布,可在服用后24小时内检测到;脏分泌占22.59%±3.22%.
结论:
- 在临床前模型中,MRTX1133被快速吸收和广泛分布,这表明ADME具有有利的特征.
- 经过验证的生物分析方法为在临床前和临床研究中量化MRTX1133提供了可靠的工具.
- 这些发现为进一步调查MRTX1133在KRAS (G12D) 驱动癌症中的治疗潜力奠定了基础.
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