The anti‐inflammatory effects of 1,25‐dihydroxyvitamin D3 on Th2 cells in vivo are due in part to the control of integrin‐mediated T lymphocyte homing

The fat soluble vitamin D3 metabolite 1,25‐dihydroxyvitamin D3 [1,25(OH)2D3], and its nuclear receptor play an important role in regulating immune responses. While 1,25(OH)2D3 is known to inhibit transcription of cytokine genes that are required for Th1 differentiation or are products of differentia...

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Veröffentlicht in:European journal of immunology 2004-04, Vol.34 (4), p.1068-1076
Hauptverfasser: Topilski, Ian, Flaishon, Liat, Naveh, Yaron, Harmelin, Alon, Levo, Yoram, Shachar, Idit
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container_end_page 1076
container_issue 4
container_start_page 1068
container_title European journal of immunology
container_volume 34
creator Topilski, Ian
Flaishon, Liat
Naveh, Yaron
Harmelin, Alon
Levo, Yoram
Shachar, Idit
description The fat soluble vitamin D3 metabolite 1,25‐dihydroxyvitamin D3 [1,25(OH)2D3], and its nuclear receptor play an important role in regulating immune responses. While 1,25(OH)2D3 is known to inhibit transcription of cytokine genes that are required for Th1 differentiation or are products of differentiated Th1 cells, its role in regulating differentiation of Th2 cells is less clear. In this study, we show that 1,25(OH)2D3 has anti‐inflammatory effects in an in vivo Th2‐dependent asthma model. In addition, we demonstrate that 1,25(OH)2D3 down‐regulates the cytoskeleton rearrangement required for promoting integrin‐mediated adhesion of naive and effector CD4+ T cells. Finally, 1,25(OH)2D3 inhibits chemokine‐induced migration of naive cells and their homing to the lymph nodes. Thus, in addition to its regulation of cytokine transcription, 1,25(OH)2D3 regulates migration of cells and thus controls the skewing of various Th subsets in the secondary lymphoid organs and inhibits Th function at sites of inflammation.
doi_str_mv 10.1002/eji.200324532
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While 1,25(OH)2D3 is known to inhibit transcription of cytokine genes that are required for Th1 differentiation or are products of differentiated Th1 cells, its role in regulating differentiation of Th2 cells is less clear. In this study, we show that 1,25(OH)2D3 has anti‐inflammatory effects in an in vivo Th2‐dependent asthma model. In addition, we demonstrate that 1,25(OH)2D3 down‐regulates the cytoskeleton rearrangement required for promoting integrin‐mediated adhesion of naive and effector CD4+ T cells. Finally, 1,25(OH)2D3 inhibits chemokine‐induced migration of naive cells and their homing to the lymph nodes. 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subjects Animals
Asthma
Asthma - chemically induced
Asthma - immunology
Asthma - physiopathology
Bronchoalveolar Lavage Fluid - chemistry
Calcitriol - pharmacology
CD4 T cells
Cell Differentiation - immunology
Cell Movement - drug effects
Cell Movement - immunology
Cytoskeleton - drug effects
Cytoskeleton - immunology
Cytoskeleton rearrangement
Disease Models, Animal
Inflammation - immunology
Integrins - immunology
Interleukin-4 - analysis
Lung - immunology
Lung - pathology
Mice
Migration
Ovalbumin - immunology
Ovalbumin - toxicity
Th2 cells
Th2 Cells - immunology
Vitamin D
title The anti‐inflammatory effects of 1,25‐dihydroxyvitamin D3 on Th2 cells in vivo are due in part to the control of integrin‐mediated T lymphocyte homing
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