Work

TOX Is Required for Development of the CD4 T Cell Lineage Gene Program

Year: 2011

Type: article

Abstract: The factors that regulate thymic development of the CD4(+) T cell gene program remain poorly defined. The transcriptional regulator ThPOK is a dominant factor in CD4(+) T cell development, which functions primarily to repress the CD8 lineage fate. Previously, we showed that nuclear protein TOX is also required for murine CD4(+) T cell development. In this study, we sought to investigate whether the requirement for TOX was solely due to a role in ThPOK induction. In apparent support of this proposition, ThPOK upregulation and CD8 lineage repression were compromised in the absence of TOX, and enforced ThPOK expression could restore some CD4 development. However, these "rescued" CD4 cells were defective in many aspects of the CD4(+) T cell gene program, including expression of Id2, Foxo1, and endogenous Thpok, among others. Thus, TOX is necessary to establish the CD4(+) T cell lineage gene program, independent of its influence on ThPOK expression.

Source: The Journal of Immunology

DOI: 10.4049/jimmunol.1101474

Authors: Parinaz Aliahmad, Asha Kadavallore, Brian de la Torre, Dietmar Kappes, Jonathan Kaye

Institutions: Cedars-Sinai Medical Center, Fox Chase Cancer Center

Language: English

Topic: T-cell and B-cell Immunology

Subfield: Immunology

Field: Immunology and Microbiology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $3,500