Ectopic LT alpha beta directs lymphoid organ neogenesis with concomitant expression of peripheral node addressin and a HEV-restricted sulfotransferase.
Ectopic LT alpha beta directs lymphoid organ neogenesis with concomitant expression of peripheral node addressin and a HEV-restricted sulfotransferase.
复制标题
异位LT Alphaββ指导淋巴器官新生成,并具有外周节点地址和HEV限制的磺胺转移酶的表达。
DOI:
10.1084/jem.20021761
复制
发表时间:
2003-05-05
期刊:
影响因子:
--
通讯作者:
Ruddle NH
中科院分区:
文献类型:
--
作者:
Drayton DL;Ying X;Lee J;Lesslauer W;Ruddle NH
Lymph node (LN) function depends on T and B cell compartmentalization, antigen presenting cells, and high endothelial venules (HEVs) expressing mucosal addressin cell adhesion molecule (MAdCAM-1) and peripheral node addressin (PNAd), ligands for naive cell entrance into LNs. Luminal PNAd expression requires a HEV-restricted sulfotransferase (HEC-6ST). To investigate LTαβ's activities in lymphoid organogenesis, mice simultaneously expressing LTα and LTβ under rat insulin promoter II (RIP) control were compared with RIPLTα mice in a model of lymphoid neogenesis and with LTβ−/− mice. RIPLTαβ pancreata exhibited massive intra-islet mononuclear infiltrates that differed from the more sparse peri-islet cell accumulations in RIPLTα pancreata: separation into T and B cell areas was more distinct with prominent FDC networks, expression of lymphoid chemokines (CCL21, CCL19, and CXCL13) was more intense, and L-selectin+ cells were more frequent. In contrast to the predominant abluminal PNAd pattern of HEV in LTβ−/− MLN and RIPLTα pancreatic infiltrates, PNAd was expressed at the luminal and abluminal aspects of HEV in wild-type LN and in RIPLTαβ pancreata, coincident with HEC-6ST. These data highlight distinct roles of LTα and LTαβ in lymphoid organogenesis supporting the notion that HEC-6ST–dependent luminal PNAd is under regulation by LTαβ.
登录
查看更多内容
影响因子:
32.4
作者:
Dejardin, E;Droin, NM;Green, DR
通讯作者:
Green, DR
影响因子:
7.8
作者:
Bistrup, A;Bhakta, S;Lee, J K;Belov, Y Y;Gunn, M D;Zuo, F R;Huang, C C;Kannagi, R;Rosen, S D;Hemmerich, S
通讯作者:
Hemmerich, S
DOI:
10.1073/pnas.91.11.5138
发表时间:
1994-05-24
影响因子:
11.1
作者:
GUERDER, S;PICARELLA, DE;FLAVELL, RA
通讯作者:
FLAVELL, RA
影响因子:
15.9
作者:
HANNINEN, A;TAYLOR, C;MICHIE, SA
通讯作者:
MICHIE, SA
影响因子:
6
作者:
Hjelmström, P;Fjell, J;Ruddle, NH
通讯作者:
Ruddle, NH