TCR-beta chains derived from peripheral gammadelta T cells can take part in alphabeta T-cell development

Bosco, N. and Engdahl, C. and Bénard, A. and Rolink, J. and Ceredig, R. and Rolink, A. G.. (2008) TCR-beta chains derived from peripheral gammadelta T cells can take part in alphabeta T-cell development. European Journal of Immunology, Vol. 38, H. 12. pp. 3520-3529.

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Official URL: http://edoc.unibas.ch/dok/A6006593

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Between 10 and 20% of the peripheral gammadelta T cells express cytoplasmic TCR-beta proteins, but whether such TCR-beta chains can partake in alphabeta T-cell development has never been systematically investigated. Therefore, we reconstituted the T-cell compartment of CD3epsilon-deficient mice with Pax5-TCR-beta deficient proB cells expressing, via a retroviral vector, TCR-beta chains from either peripheral gammadelta or alphabeta T cells. Recipient thymi reconstituted with proB cells containing empty vector were small (>15x10(6) cells), contained few gammadelta T but no alphabeta T cells. In contrast, thymi from mice receiving proB cells containing gammadelta or alphabeta T-cell-derived TCR-beta chains contained 80-130x10(6) cells, and showed a normal CD4, CD8 and alphabeta TCR expression pattern. However, regardless of the source of TCR-beta chain, reconstituted mice rapidly showed signs of autoimmunity dying 5-15 wk following reconstitution. Autoimmune disease induction could be prevented by co-transfer of Treg cells thereby allowing the functionality of the generated T cells to be assessed. Results obtained show that TCR-beta chains from gammadelta T cells can efficiently take part in alphabeta T-cell development. The implications of these findings for gammadelta T-cell development will be discussed.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Former Units at DBM > Developmental and Molecular Immunology (Rolink)
UniBasel Contributors:Rolink, Antonius G.
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Verl. Chemie
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:23 May 2014 08:34
Deposited On:23 May 2014 08:34

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