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Pubmed ID :22426257
Publication Date : //

The role of BCL11B in regulating the proliferation of human naive T cells.


The effect of the B-cell chronic lymphocytic leukemia/lymphoma 11B gene (BCL11B) on human T-cell regulation remains unclear. To characterize the functions of BCL11B, recombinant BCL11B and BCL11B siRNA were transfected into human naive T cells to overexpress or knock down BCL11B expression, respectively. After BCL11B overexpression, the proliferation ability and the T-helper (Th) subset were increased, whereas no significant alteration in the expression pattern and clonality of the T-cell receptor Vβ subfamilies was observed. After BCL11B knockdown, a similar distribution of Vβ subfamilies was detected in the naive T cells; however, the proliferation capacity substantially decreased. Global gene expression profiling revealed that the dysregulated genes were mainly involved in T-cell activation and proliferation. BCL11B could selectively promote Th-cell differentiation because of increased CXCL10 and CXCL11 expression. BCL11B suppression may inhibit proliferation and induce apoptosis, which may relate to changes in the expression of CFLAR-CASP8-CASP10 in the mitochondrial pathways. In conclusion, BCL11B is required for T-cell survival; its overexpression could effectively increase the T-cell activation and proliferation abilities and Th-cell differentiation as well.

Authors : Chen Si , Huang Xin , Chen Shaohua , Yang Lijian , Shen Qi , Zheng Haitao , Li Bo , Grabarczyk Piotr , Przybylski Grzegorz K , Schmidt Christian A , Li Yangqiu ,

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