A motif in the V3 domain of the kinase PKC-θ determines its localization in the immunological synapse and functions in T cells via association with CD28.
A motif in the V3 domain of the kinase PKC-θ determines its localization in the immunological synapse and functions in T cells via association with CD28.
复制标题
DOI:
10.1038/ni.2120
复制
发表时间:
2011-10-02
影响因子:
30.5
通讯作者:
Altman, Amnon
中科院分区:
文献类型:
--
作者:
Kong, Kok-Fai;Yokosuka, Tadashi;Canonigo-Balancio, Ann J.;Isakov, Noah;Saito, Takashi;Altman, Amnon
Protein kinase C-θ (PKC-θ) translocates to the center of the immunological synapse, but the underlying mechanism and its importance in T cell activation are unknown. We found that the PKC-θ V3 domain is necessary and sufficient for IS localization mediated by Lck-dependent association with CD28. We identified a conserved proline-rich motif in V3 required for CD28 association and IS localization. CD28 association was essential for PKC-θ-mediated downstream signaling and TH2 and TH17, but not TH1, differentiation. Ectopic V3 expression sequestered PKC-θ from the IS and interfered with its functions. These results identify a unique mode of CD28 signaling, establish a molecular basis for the IS localization of PKC-θ, and implicate V3-based “decoys” as therapeutic modalities for T cell-mediated inflammatory diseases.
登录
查看更多内容
影响因子:
4.4
作者:
Marsland, Benjamin J.;Nembrini, Chiara;Kopf, Manfred
通讯作者:
Kopf, Manfred
影响因子:
5.6
作者:
Manicassamy, S;Sadim, M;Sun, ZM
通讯作者:
Sun, ZM
影响因子:
3.3
作者:
Carrasco, S;Merida, I
通讯作者:
Merida, I
影响因子:
5.4
作者:
Giannoni, F;Lyon, AB;Sarawar, SR
通讯作者:
Sarawar, SR
DOI:
10.4049/jimmunol.0902573
发表时间:
2009-12-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Canonigo-Balancio AJ;Fos C;Prod'homme T;Bécart S;Altman A
通讯作者:
Altman A