Since conventional secretory pathway from ER to Golgi is involved in many essential functions of a cell, it is an important to understand how transport vesicles are regulated. The pathway is initiated by ER’s making transport vesicles at ER exit sites (ERES) with specific coat protein complexes such as COPII vesicles. Our previous study showed that O-GlcNAcylation (O-GlcNAc) on Sec31A, a main component for COPII vesicle, accelerates the anterograde transport of vesicles in ER-Golgi networks. In the present study, we focused on the effect of Ab, a crucial factor in the pathogenesis of Alzheimer’s disease (AD), on the formation of COPII vesicles at ERES. Ab-induced disrupted intracellular calcium levels affected the formation of COPII vesicles at ERES through O-GlcNAcylation of Sec31A in neuronal cells. In addition, Ab caused Golgi fragmentation which was rescued by up-regulation of O-GlcNAcylation using Thiamet G, an OGA inhibitor. Overall, Ab impaired ERES formation through altered Sec31A O-GlcNAcylation triggered by disruption of intracellular calcium homeostasis, suggesting that protection of ERES or Sec31 O-GlcNAcylation may be a promising novel avenue for the development of AD therapeutics.
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.
간행물
간행물명
한국당과학회 학술대회
간기
연간
수록기간
2006~2022
십진분류
KDC 517DDC 614
이 권호 내 다른 논문 / 한국당과학회 학술대회 2020 한국당과학회 연례학술대회(온라인)