Research Project
Grant-in-Aid for Scientific Research (C)
The presence of post-translational regulation of MHC class II (MHC II) under physiological conditions has been demonstrated recently in dendritic cells (DCs) that potently function as antigen-presenting cells (APCs). Here, we report that MARCH-I, an E3 ubiquitin ligase, plays a pivotal role in the post-translational regulation of MHC H in B cells. MARCH-I expression was particularly high in B cells, and the forced expression of MARCH-I induced the ubiquitination of MHC II. In B cells from MARCH-I-deficient mice (MARCH-I KO), the half-life of surface MHC II was prolonged and the ubiquitinated form of MHC II completely disappeared. In addition, MARCH-I-deficient B cells highly expressed exogenous-antigen-loaded MHC II on their surface and showed high ability to present exogenous antigens. These results suggest that the function of MHC II in B cells is regulated through ubiquitination by MARCH-I
All 2008 2007 2006 2005
All Journal Article (32 results) (of which Peer Reviewed: 6 results) Presentation (10 results) Patent(Industrial Property Rights) (4 results)
PLoS ONE 3
PloS ONE 3(1)
PLOS ONE 3(1)
EMBO J 26
EMBO J. 2007 Feb 7 ; 26(3) 25
Pages: 846-54
第30回日本分子生物学会・第80回日本生化学学会合同大会(BMB2007)
International Symposium on Membrane Traffic
日本免疫学会総会
第55回ウイルス学会学術集会
A novel family of membrane-bound E3 ubiquitin ligases 5th International Antigen Processing and Presentation Workshop
EMBO J. 26(3)
Pages: 846-854
Virus Res. 123(1)
Virus Res. 123
J. Biochem. 140
10018842614
J. Immunol. 177
実験医学 24
Biochemical and Biophysical Research Communicaitons 340
120000943971
医学のあゆみ別冊
日本臨床
Virus Res. 2007 Jan ; 123(1) 7
Pages: 1-8
J. Biochem. 140(2)
Pages: 147-54
J. Immunol. 177(1)
Pages: 341-54
実験医学 Vol.24 10
Pages: 167-172
Biochemical and Biophysical Research Communicaitons 340(3)
Pages: 792-799
医学のあゆみ 別册
Pages: 108-113
Pages: 568-575
J.Biochem. 140(2)
EMBO J. 25(15):
Pages: 3618-26
J.Immunol 177(1)
J Gen Virol. 87(Pt 7):
Pages: 1935-45
第35回日本免疫学会総会・学術集会
第35回日本ウイリス学会学術集会