Integrin alpha 4 beta 7 switches its ligand specificity via distinct conformer-specific activation | |
Wang, ShiHui1; Sun, Hao1; Ge, GaoXiang1; Chen, JianFeng1; Wu, ChenYu2,3; Cao, WenPeng2,3; Zhang, X. Frank2,3; Zhang, YueBin4; Zhong, QingLu4; Li, GuoHui4 | |
刊名 | JOURNAL OF CELL BIOLOGY |
2018 | |
卷号 | 217期号:8页码:2799-2812 |
关键词 | Selectin Glycoprotein Ligand-1 Cell-adhesion Molecule-1 Force Spectroscopy P-selectin Binding-sites Structural Specializations Neutrophil Adhesion Chemokine Receptors Crystal-structure Domains |
ISSN号 | 0021-9525 |
DOI | 10.1083/jcb.201710022 |
文献子类 | Article |
英文摘要 | Chemokine (C-C motif) ligand 25 (CCL25) and C-X-C motif chemokine 10 (CXCL10) induce the ligand-specific activation of integrin alpha 4 beta 7 to mediate the selective adhesion of lymphocytes to mucosal vascular addressin cell adhesion molecule-1 (MAdCAM-1) or vascular cell adhesion molecule-1 (VCAM-1). However, the mechanism underlying the selective binding of different ligands by alpha 4 beta 7 remains obscure. In this study, we demonstrate that CCL25 and CXCL10 induce distinct active conformers of alpha 4 beta 7 with a high affinity for either MAdCAM-1 or VCAM-1. Single-cell force measurements show that CCL25 increases the affinity of alpha 4 beta 7 for MAdCAM-1 but decreases its affinity for VCAM-1, whereas CXCL10 has the opposite effect. Structurally, CCL25 induces a more extended active conformation of alpha 4 beta 7 compared with CXCL10-activated integrin. These two distinct intermediate open alpha 4 beta 7 conformers selectively bind to MAdCAM-1 or VCAM-1 by distinguishing their immunoglobulin domain 2. Notably, Mn2+ fully opens alpha 4 beta 7 with a high affinity for both ligands. Thus, integrin alpha 4 beta 7 adopts different active conformations to switch its ligand-binding specificity. |
电子版国际标准刊号 | 1540-8140 |
WOS研究方向 | Cell Biology |
语种 | 英语 |
WOS记录号 | WOS:000440809000017 |
内容类型 | 期刊论文 |
版本 | 出版稿 |
源URL | [http://202.127.25.143/handle/331003/3428] |
专题 | 生化所2018年发文 上海生化细胞研究所_上海生科院生化细胞研究所 |
通讯作者 | Chen, JianFeng; Zhang, X. Frank |
作者单位 | 1.Univ Chinese Acad Sci, Chinese Acad Sci, CAS Ctr Excellence Mol Cell Sci, State Key Lab Cell Biol,Shanghai Inst Biochem & C, Shanghai, Peoples R China; 2.Lehigh Univ, Dept Bioengn, Bethlehem, PA 18015 USA; 3.Lehigh Univ, Dept Mech Engn & Mech, Bethlehem, PA 18015 USA; 4.Chinese Acad Sci, Lab Mol Modeling & Design, State Key Lab Mol React Dynam, Dalian Inst Chem Phys, Shanghai, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, ShiHui,Sun, Hao,Ge, GaoXiang,et al. Integrin alpha 4 beta 7 switches its ligand specificity via distinct conformer-specific activation[J]. JOURNAL OF CELL BIOLOGY,2018,217(8):2799-2812. |
APA | Wang, ShiHui.,Sun, Hao.,Ge, GaoXiang.,Chen, JianFeng.,Wu, ChenYu.,...&Li, GuoHui.(2018).Integrin alpha 4 beta 7 switches its ligand specificity via distinct conformer-specific activation.JOURNAL OF CELL BIOLOGY,217(8),2799-2812. |
MLA | Wang, ShiHui,et al."Integrin alpha 4 beta 7 switches its ligand specificity via distinct conformer-specific activation".JOURNAL OF CELL BIOLOGY 217.8(2018):2799-2812. |
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