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Functional analysis of N-glycans assembled on mannoproteins of Cryptococcus neoformans on interaction with host cells

첫 페이지 보기
  • 발행기관
    한국당과학회 바로가기
  • 간행물
    한국당과학회 학술대회 바로가기
  • 통권
    2018 한국당과학회 동계학술대회 (2018.01)바로가기
  • 페이지
    pp.61-61
  • 저자
    Jung Ho Kim, Eun Jung Thak, Seung Yeon Chung, Jin Yeong Kim, Seung-Sue Lee, Hyun Ah Kang
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A346283

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원문정보

초록

영어
Cryptococcus neoformans is a fungal pathogen causing life-threatening meningoencephalitis in immunocompromised individuals, such as AIDS patients. Several Cryptococcal mannoproteins (MPs), such as MP98, 88, and 84, are reported as key antigens stimulating host CD4 (+) T-cell response. In this study, we investigated the effect of N-glycans of Cryptococcal MPs on the interaction with host cells. The expression pattern analysis of the GPI-anchorless MPs with His (H)-tag in the wild-type (WT) and various N-/O-glycosylation mutant strains of C. neoformans indicated that MP98 is modified mainly by N-glycosylation, while MP88 and MP84 are subject to both N- and O-glycosylation. The in vitro adhesion assay using the purified MP(H)s revealed that compared to the WT-secreted MPs, the MP98(H) and MP84(H) proteins secreted from the N-glycosylation defective Cnalg3Δ mutant strain displayed a slightly increased adherence to the lung epithelial cells. Moreover, the N-glycan removed MP98(H) and MP88(H) were shown to be highly adhesive to the lung epithelial cells and macrophages. The MP98(H) and MP88(H) proteins with truncated N-glycans also stimulated more efficiently several cytokine secretion of the dendritic cells compared to the WT-secreted MP(H)s. These results indicate that highly mannosylated N-glycans seems to hide O-glycans or specific parts of proteins, which might serve as a ligand or an epitope, recognized by receptors of mammalian cells.

저자

  • Jung Ho Kim [ Department of Life Science, Chung-Ang University, Seoul, 156-756, South Korea ]
  • Eun Jung Thak [ Department of Life Science, Chung-Ang University, Seoul, 156-756, South Korea ]
  • Seung Yeon Chung [ Department of Life Science, Chung-Ang University, Seoul, 156-756, South Korea ]
  • Jin Yeong Kim [ Department of Life Science, Chung-Ang University, Seoul, 156-756, South Korea ]
  • Seung-Sue Lee [ Department of Life Science, Chung-Ang University, Seoul, 156-756, South Korea ]
  • Hyun Ah Kang [ Department of Life Science, Chung-Ang University, Seoul, 156-756, South Korea ]

참고문헌

자료제공 : 네이버학술정보

간행물 정보

발행기관

  • 발행기관명
    한국당과학회 [Korean Society for Glycoscience]
  • 설립연도
    2006
  • 분야
    의약학>약학
  • 소개
    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 517 DDC 614

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