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The thymic epithelial microRNA network elevates the threshold for infection-associated thymic involution via miR-29a mediated suppression of the IFN-α receptor

Papadopoulou, Aikaterini S. and Dooley, James and Linterman, Michelle A. and Pierson, Wim and Ucar, Olga and Kyewski, Bruno and Zuklys, Saulius and Hollander, Georg A. and Matthys, Patrick and Gray, Daniel H. D. and De Strooper, Bart and Liston, Adrian. (2011) The thymic epithelial microRNA network elevates the threshold for infection-associated thymic involution via miR-29a mediated suppression of the IFN-α receptor. Nature Immunology, Vol. 13, H. 2. pp. 181-187.

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Official URL: http://edoc.unibas.ch/dok/A6004938

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Abstract

Thymic output is a dynamic process, with high activity at birth punctuated by transient periods of involution during infection. Interferon-? (IFN-?) is a critical molecular mediator of pathogen-induced thymic involution, yet despite the importance of thymic involution, relatively little is known about the molecular integrators that establish sensitivity. Here we found that the microRNA network dependent on the endoribonuclease Dicer, and specifically microRNA miR-29a, was critical for diminishing the sensitivity of the thymic epithelium to simulated infection signals, protecting the thymus against inappropriate involution. In the absence of Dicer or the miR-29a cluster in the thymic epithelium, expression of the IFN-? receptor by the thymic epithelium was higher, which allowed suboptimal signals to trigger rapid loss of thymic cellularity.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Department of Biomedicine, University Children's Hospital > Pediatric Immunology (Holländer)
UniBasel Contributors:Holländer, Georg
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:Nature America
ISSN:1529-2908
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:06 Dec 2013 09:35
Deposited On:06 Dec 2013 09:35

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