首页> 外文会议>American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics >TWO DIMENSIONAL LC-SRM ASSAY FOR A THERAPEUTIC MONOCLONAL ANTIBODY (TRASTUZUMAB) IN HUMAN SERUM
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TWO DIMENSIONAL LC-SRM ASSAY FOR A THERAPEUTIC MONOCLONAL ANTIBODY (TRASTUZUMAB) IN HUMAN SERUM

机译:用于治疗性单克隆抗体(Trastuzumab)的人血清中的二维LC-SRM测定

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1. A general protein bioanalysis workflow involving no protein fractionation was used successfully for quantification of trastuzumab in human serum. 2. Trypsin digestion efficiency for trastuzumab and peptide IS were optimized in respect to protein:enzyme ratio and incubation time in the presence of serum matrix. 3. Digestion reproducibility was better than 6% when using an extended ~(13)C~(15)N-isotopically labeled peptide as an internal standard. 4. The ratio of 12C/13C peptides was not significantly affected by the serum matrix. 5. High pH/low pH RP/RP 2D LC separation can significantly reduce analyte suppression in protein bioanalysis.
机译:1.成功使用涉及蛋白质分级的一般蛋白质生物分析工作流程用于定量人血清中的曲妥珠单抗。 2.对蛋白质的胰蛋白酶和肽的胰蛋白酶消化效率在蛋白质:酶比和血清基质存在下进行培养时间进行了优化。 3.当使用延长〜(13)C〜(15)n-同位素标记的肽作为内标时,消化再现性优于6%。 4. 12C / 13C肽的比例没有受血清基质的显着影响。 5.高pH /低pH / RP 2D LC分离可以显着降低蛋白质生物分析中的分析物抑制。

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