CD8(+) T cells drive autoimmune hematopoietic stem cell dysfunction and bone marrow failure.
CD8(+) T cells drive autoimmune hematopoietic stem cell dysfunction and bone marrow failure.
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DOI:
10.1016/j.jaut.2016.07.007
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发表时间:
2016-12
影响因子:
12.8
通讯作者:
Hoyer KK
中科院分区:
文献类型:
--
作者:
Gravano DM;Al-Kuhlani M;Davini D;Sanders PD;Manilay JO;Hoyer KK
Bone marrow (BM) failure syndrome encompasses a group of disorders characterized by BM stem cell dysfunction, resulting in varying degrees of hypoplasia and blood pancytopenia, and in many patients is autoimmune and inflammatory in nature. The important role of T helper 1 (Th1) polarized CD4+ T cells in driving BM failure has been clearly established in several models. However, animal model data demonstrating a functional role for CD8+ T cells in BM dysfunction is largely lacking and our objective was to test the hypothesis that CD8+ T cells play a non-redundant role in driving BM failure. Clinical evidence implicates a detrimental role for CD8+ T cells in BM failure and a beneficial role for Foxp3+ regulatory T cells (Tregs) in maintaining immune tolerance in the BM. We demonstrate that IL-2-deficient mice, which have a deficit in functional Tregs, develop spontaneous BM failure. Furthermore, we demonstrate a critical role for CD8+ T cells in the development of BM failure, which is dependent on the cytokine, IFNγ. CD8+ T cells promote hematopoietic stem cell dysfunction and depletion of myeloid lineage progenitor cells, resulting in anemia. Adoptive transfer experiments demonstrate that CD8+ T cells dramatically expedite disease progression and promote CD4+ T cell accumulation in the BM. Thus, BM dysregulation in IL-2-deficient mice is mediated by a Th1 and IFNγ-producing CD8+ T cell (Tc1) response.
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DOI:
10.1038/nri3062
发表时间:
2011-09-09
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
通讯作者:
--
影响因子:
4.4
作者:
Chen, Jichun;Ellison, Felicia M.;Young, Neal S.
通讯作者:
Young, Neal S.
影响因子:
56.9
作者:
Cheng, T;Rodrigues, N;Scadden, DT
通讯作者:
Scadden, DT
影响因子:
20.3
作者:
Selleri, C;Maciejewski, JP;Young, NS
通讯作者:
Young, NS
影响因子:
4.4
作者:
Hoyer, Katrina K.;Wolslegel, Kristen;Abbas, Abul K.
通讯作者:
Abbas, Abul K.