Roquin Paralogs 1 and 2 Redundantly Repress the Icos and Ox40 Costimulator mRNAs and Control Follicular Helper T Cell Differentiation

Autor: Claudia Lohs, Helmut Blum, Elisabeth Kremmer, Marc Schmidt-Supprian, Wolfgang Wurst, Jessica Zöller, Vigo Heissmeyer, Katharina U. Vogel, Mathias Heikenwalder, Stephanie L. Edelmann, Frauke Neff, Arianna Bertossi, Kai P. Hoefig, Gitta Anne Heinz, Dirk Repsilber, Klaus Heger, Arie Geerlof, Katharina M. Jeltsch, Sebastian C. Warth, Joel A. Schick
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Cellular differentiation
Cell
Lymphocyte Activation
Mice
0302 clinical medicine
metabolism [CD4 Antigens]
Gene expression
Immunology and Allergy
Receptor
metabolism [Repressor Proteins]
Mice
Knockout

genetics [Ubiquitin-Protein Ligases]
0303 health sciences
genetics [Cell Differentiation]
Effector
Cell Differentiation
T-Lymphocytes
Helper-Inducer

Cell biology
genetics [Inducible T-Cell Co-Stimulator Protein]
Infectious Diseases
medicine.anatomical_structure
CD4 Antigens
metabolism [Inducible T-Cell Co-Stimulator Protein]
Protein Binding
Ubiquitin-Protein Ligases
T cell
Immunology
metabolism [Receptors
OX40]

Biology
metabolism [RNA
Messenger]

Inducible T-Cell Co-Stimulator Protein
03 medical and health sciences
metabolism [Ubiquitin-Protein Ligases]
Icos protein
mouse

medicine
Animals
Humans
immunology [T-Lymphocytes
Helper-Inducer]

ddc:610
RNA
Messenger

Gene
030304 developmental biology
genetics [Lymphocyte Activation]
Receptors
OX40

Mice
Mutant Strains

Mice
Inbred C57BL

Repressor Proteins
genetics [Repressor Proteins]
HEK293 Cells
Rc3h1 protein
mouse

genetics [Receptors
OX40]

roquin-2 protein
mouse

030215 immunology
IRF4
Zdroj: Immunity; Vol 38
Immunity 38, 655-668 (2013)
Immunity
Immunity 38(4), 655-668 (2013). doi:10.1016/j.immuni.2012.12.004
ISSN: 1074-7613
DOI: 10.1016/j.immuni.2012.12.004
Popis: The Roquin-1 protein binds to messenger RNAs (mRNAs) and regulates gene expression posttranscriptionally. A single point mutation in Roquin-1, but not gene ablation, increases follicular helper T (Tfh) cell numbers and causes lupus-like autoimmune disease in mice. In Tcells, we did not identify a unique role for the much lower expressed paralog Roquin-2. However, combined ablation of both genes induced accumulation of Tcells with an effector and follicular helper phenotype. We showed that Roquin-1 and Roquin-2 proteins redundantly repressed the mRNA of inducible costimulator (Icos) and identified the Ox40 costimulatory receptor as another shared mRNA target. Combined acute deletion increased Ox40 signaling, as well as Irf4 expression, and imposed Tfh differentiation on CD4+ Tcells. These data imply that both proteins maintain tolerance by preventing inappropriate Tcell activation and Tfh cell differentiation, and that Roquin-2 compensates in the absence of Roquin-1, but not in the presence of its mutated form.
Databáze: OpenAIRE