The actin regulatory protein HS1 is required for antigen uptake and presentation by dendritic cells.
The actin regulatory protein HS1 is required for antigen uptake and presentation by dendritic cells.
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DOI:
10.4049/jimmunol.1100870
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发表时间:
2011-12-01
期刊:
影响因子:
--
通讯作者:
Burkhardt JK
中科院分区:
文献类型:
--
作者:
Huang Y;Biswas C;Klos Dehring DA;Sriram U;Williamson EK;Li S;Clarke F;Gallucci S;Argon Y;Burkhardt JK
The hematopoietic actin regulatory protein HS1 is required for cell spreading and signaling in lymphocytes, but the scope of HS1 function in antigen presentation has not been addressed. We show that dendritic cells (DCs) from HS1−/− mice differentiate normally and display normal LPS-induced upregulation of surface markers and cytokines. Consistent with their normal expression of MHC and costimulatory molecules, HS1−/− DCs present OVA peptide efficiently to CD4+ T cells. However, presentation of ovalbumin protein is defective. Similarly, MHC Class I-dependent presentation of VSV8 peptide to CD8+ T cells occurs normally, but cross-presentation of GRP94/VSV8 complexes is defective. Analysis of antigen uptake pathways shows that HS1 is required for receptor-mediated endocytosis, but not for phagocytosis or macropinocytosis. HS1 interacts with dynamin 2, a protein involved in scission of endocytic vesicles. However, HS1−/− DCs showed decreased numbers of endocytic invaginations, whereas dynamin-inhibited cells showed accumulation of these endocytic intermediates. Taken together, these studies show that HS1 promotes an early step in the endocytic pathway that is required for efficient antigen presentation of exogenous antigen by DCs.
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影响因子:
4.4
作者:
Burgdorf, Sven;Lukacs-Kornek, Veronika;Kurts, Christian
通讯作者:
Kurts, Christian
影响因子:
3.7
作者:
Boucrot, Emmanuel;Saffarian, Saveez;Ehrlich, Marcelo
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通讯作者:
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DOI:
10.4049/jimmunol.0900973
发表时间:
2009-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Carrizosa E;Gomez TS;Labno CM;Klos Dehring DA;Liu X;Freedman BD;Billadeau DD;Burkhardt JK
通讯作者:
Burkhardt JK
影响因子:
30.5
作者:
Butler, Boyd;Kastendieck, Diana H.;Cooper, John A.
通讯作者:
Cooper, John A.