Su-bin Lee, Eun Jung Thak, Jung Ho Kim, Seung Yeon Chung, Hyun Ah Kang
언어
영어(ENG)
URL
https://www.earticle.net/Article/A390459
※ 원문제공기관과의 협약기간이 종료되어 열람이 제한될 수 있습니다.
원문정보
초록
영어
The opportunistic human fungal pathogen Cryptococcus neoformans is the main causative agent of fungal meningoencephalitis in immunocompromised patients. The mannoprotein MP84 of C. neoformans, reported as an adhesion protein and as an immunoreactive antigen to host CD4(+) T cell, is highly mannosylated cell wall protein. In this study, we investigated the structure of N-glycans attached on MP84 and the effect of altered N-glycan structures on its interaction with host cells. We expressed the His tagged MP84 as a secretory form in WT and alg3Δ mutant, a N-glycosylation defective strain, to generate MP84 with the truncated core N-glycans. In in-vitro adhesion and uptake assay, the purified MP84 proteins carrying the truncated N-glycans did not show significant difference in host cell interactions compared to MP84 carrying the WT N-glycans. Moreover, we expressed a secretory MP84 lacking N-glycosylation site, constructed by protein engineering, to investigate the effect of full-deglycosylation on the interaction with MP84 with host cells. Aglycosylated MP84 revealed much higher adhesion affinity to host cells than MP84 carrying the WT and truncated N-glycans. On contrast, aglycosylated MP84 still retains the cytokine induction activity comparable to WT, although MP84 with truncated N-glycans showed a decreased immunostimulatory activity. In conclusion, the mixed effects of N-glycan structures of MP84 on the interaction with host cells strongly suggest the modulatory role of N-glycans to avoid non-specific interaction with host cells.
저자
Su-bin Lee [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
Eun Jung Thak [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
Jung Ho Kim [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
Seung Yeon Chung [ Department of Life Science, Chung-Ang University, Seoul, Korea ]
Hyun Ah Kang [ Department of Life Science, Chung-Ang University, Seoul, 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.
간행물
간행물명
한국당과학회 학술대회
간기
연간
수록기간
2006~2022
십진분류
KDC 517DDC 614
이 권호 내 다른 논문 / 한국당과학회 학술대회 2020 한국당과학회 연례학술대회(온라인)