Nari Seo, Unyong Kim, Myungjin Oh, Ye Rin Jin, Hyun Joo An
언어
영어(ENG)
URL
https://www.earticle.net/Article/A294780
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원문정보
초록
영어
Glycosylation of monoclonal antibody (mAb) therapeutics has critical roles such as biological activity, stability, plasma half-life, and immunogenicity. Therefore, detailed glycomic analyses are important to assess quality, safety, and potency of mAbs. Although mass spectrometry (MS) has emerged as a powerful tool for qualitative glycan analysis, MS-based quantitative analysis for glycome is still limited due to the absence of analytical platform and authentic standards. This study aims to develop the method for quantitative analysis of glycan and site-specific glycoforms directly from mAbs for QA/QC assessment using multiple reaction monitoring (MRM). Here, tryptic glycopeptide on trastuzumab, representative mAb, was selected as a standard for optimization of MRM transitions and instrument parameters of C18-UHPLC/triple quadrupole (QqQ). Three major tryptic glycopeptides having the same peptide moiety (EEQYNSTYR) with three different glycans (G0F, G1F, and G2F) on mAbs were targeted and quantified using MRM. In addition, we measured the absolute amounts of major glycans (G0F, G1F, and G2F) on each mAb (adalimumab, bevacizumab, infliximab, rituximab, and trastuzumab) using FLD response of 2-aminobenzamide (2-AB) labeled glycan standards. Consequently, we found that the abundance of glycopeptide calculated by MRM has highly correlated with absolute amounts of 2-AB labeled glycan by LC-FLD. The developed MRM method can be applied to evaluate mAbs variants and/or biosimilars for both developmental and regulatory purposes.
저자
Nari Seo [ Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Asia-Pacific Glycomics Reference Site ]
Unyong Kim [ Graduate School of Analytical Science and Technology (GRAST), Chungnam National University ]
Myungjin Oh [ Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Asia-Pacific Glycomics Reference Site ]
Ye Rin Jin [ Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Asia-Pacific Glycomics Reference Site ]
Hyun Joo An [ Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Asia-Pacific Glycomics Reference Site ]
본 학회는 화학, 생화학, 분자생물학, 미생물학, 식품공학, 의학, 약학, 유전공학 및 생물공학, 환경 및 기타 공업 등 전 분야의 탄수화물관련 이론과 기술을 연구 발전시키고 산학협동을 통해 이를 보급하여 국내 관련 산업의 발전 및 국민생활의 과학화에 기여하고자 하며, 이러한 목표와 비젼의 실현을 위해 회원들이 적극적인 참여와 활동을 전개하고자 한다.