Autophagy gene Atg16L1 prevents lethal T cell alloreactivity mediated by dendritic cells.

Autophagy gene Atg16L1 prevents lethal T cell alloreactivity mediated by dendritic cells.
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DOI:
10.1016/j.immuni.2014.09.011
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发表时间:
2014-10-16
期刊:
影响因子:
32.4
通讯作者:
Cadwell, Ken
Cadwell, Ken
中科院分区:
医学1区
文献类型:
--
作者:
Hubbard-Lucey, Vanessa M.;Shono, Yusuke;Maurer, Katie;West, Mallory L.;Singer, Natalie V.;Ziegler, Carly G. K.;Lezcano, Cecilia;Motta, Ana Carolina Fragoso;Schmid, Karin;Levi, Samuel M.;Murphy, George F.;Liu, Chen;Winkler, Jeffrey D.;Amaravadi, Ravi K.;Rogler, Gerhard;Dickinson, Anne M.;Holler, Ernst;van den Brink, Marcel R. M.;Cadwell, Ken

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Atg16L1 mediates the cellular degradative process of autophagy and is considered a critical regulator of inflammation based on its genetic association with inflammatory bowel disease. Here we find that Atg16L1 deficiency leads to an exacerbated graft-versus-host disease (GVHD) in a mouse model of allogeneic hematopoietic stem cell transplantation (allo-HSCT). Atg16L1-deficient allo-HSCT recipients with GVHD displayed increased T cell proliferation due to increased dendritic cell (DC) numbers and co-stimulatory molecule expression. Reduced autophagy within DCs was associated with lysosomal abnormalities and decreased amounts of A20, a negative regulator of DC activation. These results broaden the function of Atg16L1 and the autophagy pathway to include a role in limiting a DC-mediated response during inflammatory disease, such as GVHD.
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