Pathogen recognition is a fundamental step in host immune response and survives against infections. Pathogen recognition happens by host cell surface receptor which induces downstream immune responses such as opsonization, phagocytosis. Among that glycan-binding receptor in C-type lectin superfamily form recognition molecules which are crucial to innate immunity. Many C-type lectins found in pathogen bind to glycan array, but host cell doesn't have so it makes distinguish self and non-self. However, some pathogen uses this selective recognition for primary infection and subsequent proliferation in a host. DC-SIGN(CD209) initially dendritic cell-specific ICAM-3-grabbing nonintegrin is one of the C-type lectin family dendritic cell surface receptor which binds with pathogen glycan. DC-SIGN can bind with two classes of carbohydrate structures: N-linked high mannose oligosaccharides, fucosylated oligosaccharides. Crystal structure of CRD from DC-SIGN with oligosaccharide reveal CRD forms 1-to-1 complex with high-mannose oligosaccharides. Surface force apparatus(SFA) is used to quantify interaction force of cell surface receptor and glycans on the target membrane. This kind of force measurements can quantify variations in the adhesion energy between DC-SIGN with ligand density which further reveal the role of ligand spacing in the multivalent interactions of CRDs with ligand. By SFA, binding-site geometry and flexibility in DC-SIGN demonstrated and calcium contributions for Dendritic cell receptors on carbohydrate recognition proved.
저자
Suyoung Lee [ Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Korea ]
Hee Young Yoo [ Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 790-784, Korea ]
Dong Soo Hwang [ Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Division of Environmental Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, 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.