Research Project
Grant-in-Aid for Challenging Exploratory Research
Extracellular heat shock proteins (HSPs) have been shown to initiate an aseptic inflammation via an activation of antigen presenting cells including dendritic cells. Moreover, we have shown that extracellular Hsp90-antigen complex is efficiently cross-presented by dendritic cells and stimulates antigen-specific T cells. Thus, extracellular Hsp90 plays a crucial role in the activation of innate immunity and adaptive immunity. In this study, we have identified ER-resident oxidase ERO1-α as a candidate of Hsp90 receptor. The cell surface expression as well as ER expression of ERO1-α was augmented when dendritic cells were exposed to hypoxia and oxidative stress caused by H2O2 treatment. Extracellular Hsp90 bound to ERO1-α expressed on the cell surface of dendritic cells. We are currently investigating whether ERO1-α-bound Hsp90 is endocytosed and activates dendritic cells. These results will explain how endogenous extracellular HSPs impact on the inflammation and immunity.
All 2015 2014 2013 2012 Other
All Journal Article (33 results) (of which Peer Reviewed: 33 results, Open Access: 7 results, Acknowledgement Compliant: 8 results) Presentation (6 results) (of which Invited: 6 results) Book (1 results) Remarks (1 results) Patent(Industrial Property Rights) (4 results) (of which Overseas: 2 results)
Cancer Science
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Anticancer Res
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Immunobiology
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10.1016/j.imbio.2014.08.017
Lab Invest
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10.1038/labinvest.2014.122
J Biol Chem
Volume: 289 Issue: 32 Pages: 22035-22047
10.1074/jbc.m114.568725
J Cancer Res Clin Oncol
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10.1007/s00432-014-1593-7
Cancer Sci
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10.1111/cas.12362
Methods Mol Biol
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Cancer Immunol Res
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Clin Dev Immunol
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PLoS One
Volume: 8 Issue: 11 Pages: e69095-e69095
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10.1371/journal.pone.0068187
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Exp. Cell Res.
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Volume: 104 Issue: 8 Pages: 1091-6
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Tissue Antigens.
Volume: 81(6) Issue: 6 Pages: 428-34
10.1111/tan.12113
Volume: 104 Issue: 4 Pages: 431-6
10.1111/cas.12104
Volume: 104 Issue: 1 Pages: 124-129
10.1111/cas.12046
Virchows Arch
Volume: 462 Issue: 1 Pages: 101-107
10.1007/s00428-012-1343-7
Mod Pathol.
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Anticancer Res.
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Experimental and Molecular Pathology
Volume: 94 Issue: 2 Pages: 322-329
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Immunotherapy
Volume: 8 Issue: 8 Pages: 841-852
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Curr Mol Med.
Volume: 121 Pages: 1198-1206
Cell Stress Chaperones
Volume: 17 Issue: 6 Pages: 757-763
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Cancer Res
Volume: (in press) Issue: 11 Pages: 2844-54
10.1158/0008-5472.can-11-3062
http://web.sapmed.ac.jp/patho1/