RHOA G17V Induces T Follicular Helper Cell Specification and Promotes Lymphomagenesis.
RHOA G17V Induces T Follicular Helper Cell Specification and Promotes Lymphomagenesis.
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DOI:
10.1016/j.ccell.2018.01.001
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发表时间:
2018-02-12
期刊:
影响因子:
50.3
通讯作者:
Palomero T
中科院分区:
文献类型:
--
作者:
Cortes JR;Ambesi-Impiombato A;Couronné L;Quinn SA;Kim CS;da Silva Almeida AC;West Z;Belver L;Martin MS;Scourzic L;Bhagat G;Bernard OA;Ferrando AA;Palomero T
Angioimmunoblastic T cell lymphoma (AITL) is an aggressive tumor derived from malignant transformation of T follicular helper (Tfh) cells. AITL is characterized by loss-of-function mutations in Ten-Eleven Translocation 2 (TET2) epigenetic tumor suppressor and a highly recurrent mutation (p.Gly17Val) in the RHOA small GTPase. Yet, the specific role of RHOA G17V in AITL remains unknown. Expression of Rhoa G17V in CD4+ T cells induces Tfh cell specification; increased proliferation associated with ICOS upregulation and increased PI3K and MAPK signaling. Moreover, RHOA G17V expression together with Tet2 loss resulted in development of AITL in mice. Importantly, Tet2−/− RHOA G17V tumor proliferation in vivo can be inhibited by ICOS/PI3K-specific blockade, supporting a driving role for ICOS signaling in Tfh cell transformation. Cortes et al. show that expression of Rhoa G17V in CD4+ T cells drives proliferation and Tfh polarization, and they develop an angioimmunoblastic T cell lymphoma model by combining Rhoa G17V expression and Tet2 loss. These tumors show increased ICOS and PI3K/MAPK signaling and are sensitive to pathway inhibition.
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影响因子:
32.4
作者:
Choi YS;Kageyama R;Eto D;Escobar TC;Johnston RJ;Monticelli L;Lao C;Crotty S
通讯作者:
Crotty S
DOI:
10.1084/jem.20141380
发表时间:
2015-04-06
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Hatzi K;Nance JP;Kroenke MA;Bothwell M;Haddad EK;Melnick A;Crotty S
通讯作者:
Crotty S
DOI:
10.1073/pnas.0911573106
发表时间:
2009-12-01
影响因子:
11.1
作者:
Gigoux, Mathieu;Shang, Jijun;Suh, Woong-Kyung
通讯作者:
Suh, Woong-Kyung
影响因子:
20.3
作者:
de Leval, Laurence;Rickman, David S.;Gaulard, Philippe
通讯作者:
Gaulard, Philippe
影响因子:
10.1
作者:
Hsu M;Sedighim S;Wang T;Antonios JP;Everson RG;Tucker AM;Du L;Emerson R;Yusko E;Sanders C;Robins HS;Yong WH;Davidson TB;Li G;Liau LM;Prins RM
通讯作者:
Prins RM