Selective expression of claudin-5 in thymic endothelial cells regulates the blood-thymus barrier and T-cell export.
Selective expression of claudin-5 in thymic endothelial cells regulates the blood-thymus barrier and T-cell export.
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胸腺内皮细胞中claudin-5的选择性表达调节血-胸腺屏障和T细胞输出。
DOI:
10.1093/intimm/dxaa069
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发表时间:
2021-03-01
影响因子:
4.4
通讯作者:
Hamazaki Y
中科院分区:
文献类型:
--
作者:
Nagatake T;Zhao YC;Ito T;Itoh M;Kometani K;Furuse M;Saika A;Node E;Kunisawa J;Minato N;Hamazaki Y
How claudin-5 regulates the blood-thymus barrier T-cell development depends on the thymic microenvironment, in which endothelial cells (ECs) play a vital role. Interestingly, vascular permeability of the thymic cortex is lower than in other organs, suggesting the existence of a blood–thymus barrier (BTB). On the other hand, blood-borne molecules and dendritic cells bearing self-antigens are accessible to the medulla, facilitating central tolerance induction, and continuous T-precursor immigration and mature thymocyte egress occur through the vessels at the cortico-medullary junction (CMJ). We found that claudin-5 (Cld5), a membrane protein of tight junctions, was expressed in essentially all ECs of the cortical vasculatures, whereas approximately half of the ECs of the medulla and CMJ lacked Cld5 expression. An intravenously (i.v.) injected biotin tracer hardly penetrated cortical Cld5+ vessels, but it leaked into the medullary parenchyma through Cld5– vessels. Cld5 expression in an EC cell line caused a remarkable increase in trans-endothelial resistance in vitro, and the biotin tracer leaked from the cortical vasculatures in Cldn5–/– mice. Furthermore, i.v.-injected sphingosine-1 phosphate distributed selectively into the medulla through the Cld5– vessels, probably ensuring the egress of CD3high mature thymocytes from Cld5– vessels at the CMJ. These results suggest that distinct Cld5 expression profiles in the cortex and medulla may control the BTB and the T-cell gateway to blood circulation, respectively.
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影响因子:
7.8
作者:
Furuse, Mikio;Hata, Masaki;Furuse, Kyoko;Yoshida, Yoko;Haratake, Akinori;Sugitani, Yoshinobu;Noda, Tetsuo;Kubo, Akiharu;Tsukita, Shoichiro
通讯作者:
Tsukita, Shoichiro
影响因子:
4.4
作者:
Anderson, M;Anderson, SK;Farr, AG
通讯作者:
Farr, AG
影响因子:
4.4
作者:
Drayton, DL;Bonizzi, G;Ruddle, NH
通讯作者:
Ruddle, NH
影响因子:
32.4
作者:
Hadeiba H;Lahl K;Edalati A;Oderup C;Habtezion A;Pachynski R;Nguyen L;Ghodsi A;Adler S;Butcher EC
通讯作者:
Butcher EC
DOI:
10.1084/jem.20102551
发表时间:
2011-06-06
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Bréart B;Ramos-Perez WD;Mendoza A;Salous AK;Gobert M;Huang Y;Adams RH;Lafaille JJ;Escalante-Alcalde D;Morris AJ;Schwab SR
通讯作者:
Schwab SR