Glycan plays numerous roles in the nervous system during development, regeneration and synaptic plasticity, forming of a complex meshwork at the cell surface. We newly established an analytical platform for exploring two molecules- glycan attached to proteins and glycan attached to lipids- from human brain using mass spectrometry. 69 brain samples were obtained from the University of Cambridge. Glycan extraction method from previous study, and new ganglioside extraction method were paired with MS. Briefly, each brain tissues were grinded by sonication. Then for glycans, the membrane was pelleted by ultracentrifugation. N-glycan release and associated processing steps were performed by previously optimized procedures. For sphingolipids, homogenized brain is mixed with chloroform/methanol/water and centrifuged. Total lipids extracts were partitioned again with chloroform/methanol to collect gangliosides. After further enrichment by SPE, N-glycans and gangliosides were profiled by positive and negative ion mode nano-LC/MS respectively. Stucture information was obtained by nano-LC/MS/MS. Brain samples were divided into the 7 groups: neonates, infants, toddlers, school-ages, teenagers, young adults. We successfully profiled brain glycome and sphingolipids, identifying approximately 100 N-glycan compositions and 120 ganglioside compounds with several unique “brain type” characters. This study promise insights into involvement of glycans to massive flow of information that underpins brain, with providing meaningful understanding to neuropathology related with aging.
저자
Jua Lee [ Asia Glycomics Reference Site, Chungnam National University, Daejeon, Korea, Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Korea ]
Jae Yun Hwang [ Asia Glycomics Reference Site, Chungnam National University, Daejeon, Korea, Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Korea ]
Sum in Kim [ Asia Glycomics Reference Site, Chungnam National University, Daejeon, Korea, Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Korea ]
Hyun Joo An [ Asia Glycomics Reference Site, Chungnam National University, Daejeon, Korea, Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, 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.