Jaekyoung Ko, Hyunjung Jeong, Nari Seo, MyungJin Oh, Hyun Joo An
언어
영어(ENG)
URL
https://www.earticle.net/Article/A346320
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원문정보
초록
영어
Glycosylation plays important roles m a therapeutic glycoprotein such as stability, efficiency, and pharmacokinetics. Especially, sialic acid expressed as an outer terminal unit on the glycoprotein is involved in half-life in serum. In particular, Neu5Gc, a non-human sialic acid, is often observed in therapeutic glycoproteins produced from mammalian cell lines. And exogenous Neu5Gc can be an immunogenic antigen in human cells. Therefore, the screening and quantitation of Neu5Gc in a therapeutic glycoprotein is highly required in the manufacturing and development processes. In this study, we developed an analytical method for selectively identifying and quantifying Neu5Gc with high sensitvity usmg mass spectrometry. The amount of Neu5Gc isolated from various mAb-based therapeutics such as infliximab and trastuzumab was correctly determined. Briefly, sialic acids were liberated from each therapeutic glycoprotein by chmical hydrolysis and further enriched using solid phases extraction with a PGC cartridge. The Neu5Gc was chromatographically separated on a PGC column, then analyzed by MRM-MS. The concentration of Neu5Gc from mAb-based therapeutics was determined at low nano mole levels with high reproducibility ( CV < 6%). Batch-to-batch variations of Neu5Gc from a therapeutic glycoprotein were quatitatively determined. This method will be a valuable platform for not only QbD processes of biotherapeutics but also QA/QC of products to assess impurites and immunogenecities
저자
Jaekyoung Ko [ Graduate School of Analytical Science and Technology, Chungnam National University, Korea, Asia-Pacific Glycomics Reference Site, Korea ]
Hyunjung Jeong [ Graduate School of Analytical Science and Technology, Chungnam National University, Korea, Asia-Pacific Glycomics Reference Site, Korea ]
Nari Seo [ Graduate School of Analytical Science and Technology, Chungnam National University, Korea, Asia-Pacific Glycomics Reference Site, Korea ]
MyungJin Oh [ Graduate School of Analytical Science and Technology, Chungnam National University, Korea, Asia-Pacific Glycomics Reference Site, Korea ]
Hyun Joo An [ Graduate School of Analytical Science and Technology, Chungnam National University, Korea, Asia-Pacific Glycomics Reference Site, Korea ]
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.