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Structural Analysis of Unique N-linked Glycans in the Human Fungal Pathogen Cryptococcus neoformans

첫 페이지 보기
  • 발행기관
    한국당과학회 바로가기
  • 간행물
    한국당과학회 학술대회 바로가기
  • 통권
    ACGG 2012 Conference (2012.10)바로가기
  • 페이지
    pp.86-87
  • 저자
    Dong-Jik Lee, Jeong-Nam Park, HyunAh Kang
  • 언어
    영어(ENG)
  • URL
    https://www.earticle.net/Article/A192906

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원문정보

초록

영어
Cryptococcus neoformans is an encapsulated basidiomycete causing cryptococcosis in immunocompromised individuals such as AIDS patients. Previous studies show that cell surface mannoproteins of C. neoformans stimulated host T-cell responses indicating that these protein are involved in pathogenicity. However, the structure of N-linked oligosaccharides assembled oncryptococcal cell wall mannoproteins has not yet been elucidated. In order to obtain comprehensive information on the structure of N-linked glycans in various serotypes of C. neoformans, the profiles of N-linked oligosaccharides obtained from cell wall mannoproteins were analysed by MALDI-TOP and HPLC. Exoglycosidase treatment revealed that C. neoformansN-glycans were mostly composed of α1,2- and α1,6-linked mannose residues. Notably, the neutral N-glycans of serotypes A and D were shown to have high-mannose type N-glycans with a β1,2-xylose residue, which is attached to the trimannosyl-core of N-glycans, whereas those of serotype B were shown to be much shorter and devoid of a xylose residue. Further analysis of the acidic N-glycans of C. neoformans indicated the presence of xylose-phosphate residues in the core and outer regions of N-glycans regardless of serotypes, but with quite differential extent. The N-glycan profiles lacking both xylose and xylose-phosphate residues in the C. neoformansuxs1Δ mutant strongly indicated that UDP-xylose is used as a donor sugar for the addition of a xylose or a xylose-phosphate residue to the N-glycans. Our data present the first report on the unique structure of N-glycans in C. neoformans, which is quite different from those of other yeast and fungal species.

저자

  • Dong-Jik Lee [ Department of Life Science, Center for Fungal Pathogenesis, Chung-Ang University ]
  • Jeong-Nam Park [ Department of Life Science, Center for Fungal Pathogenesis, Chung-Ang University ]
  • HyunAh Kang [ Department of Life Science, Center for Fungal Pathogenesis, Chung-Ang University ]

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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