CC chemokine receptor 7-dependent and -independent pathways for lymphocyte homing: modulation by FTY720.
CC chemokine receptor 7-dependent and -independent pathways for lymphocyte homing: modulation by FTY720.
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DOI:
10.1084/jem.194.12.1875
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发表时间:
2001-12-17
期刊:
影响因子:
--
通讯作者:
Förster R
中科院分区:
文献类型:
--
作者:
Henning G;Ohl L;Junt T;Reiterer P;Brinkmann V;Nakano H;Hohenberger W;Lipp M;Förster R
Cognate interaction of chemokine receptor CCR7 on lymphocytes with its ligands CCL19 and CCL21 expressed on high endothelial venules (HEVs) is essential for effective migration of T and B cells across HEVs into secondary lymphoid organs. Plt mice, which lack expression of CCL19 and CCL21-ser, both ligands for CCR7 on HEVs, as well as CCR7-deficient mice, have a defective cell migration and reduced homing of lymphocytes. FTY720, a novel immunosuppressant, causes a reduction of lymphocytes in peripheral blood and tissues and their sequestration into lymphoid tissues. In this study we demonstrate that FTY720 rescues the homing defect in both CCR7−/− mice and plt mice. After FTY720 treatment, the number of CD4+ and CD8+ T cells as well as B cells in peripheral blood is reduced while pertussis toxin–sensitive homing into peripheral lymph nodes, mesenteric lymph node, and Peyer's patches is increased. Immunohistology demonstrates that FTY720 enables these cells to enter lymphoid tissue through HEVs. Thus, our data suggest an alternative G-αi-dependent, CCR7-CCL19/CCL21-independent mechanism for lymphocyte homing through HEVs which is strongly augmented in the presence of FTY720.
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DOI:
10.1084/jem.171.3.801
发表时间:
1990-03-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Mackay CR;Marston WL;Dudler L
通讯作者:
Dudler L
影响因子:
4.4
作者:
Gräler, MH;Bernhardt, G;Lipp, M
通讯作者:
Lipp, M
影响因子:
20.3
作者:
Chen, G;Shankar, P;Lieberman, J
通讯作者:
Lieberman, J
影响因子:
20.3
作者:
Nakano, H;Mori, S;Kakiuchi, T
通讯作者:
Kakiuchi, T
影响因子:
64.5
作者:
Förster, R;Schubel, A;Lipp, M
通讯作者:
Lipp, M