DNA-binding of the Tet-transactivator curtails antigen-induced lymphocyte activation in mice
AuthorOttina, E; Peperzak, V; Schoeler, K; Carrington, E; Sgonc, R; Pellegrini, M; Preston, S; Herold, MJ; Strasser, A; Villunger, A
Source TitleNature Communications
PublisherNATURE PUBLISHING GROUP
University of Melbourne Author/sHerold, Marco; Carrington, Emma; Preston, Simon; Pellegrini, Marc; Strasser, Andreas
AffiliationMedical Biology (W.E.H.I.)
Document TypeJournal Article
CitationsOttina, E., Peperzak, V., Schoeler, K., Carrington, E., Sgonc, R., Pellegrini, M., Preston, S., Herold, M. J., Strasser, A. & Villunger, A. (2017). DNA-binding of the Tet-transactivator curtails antigen-induced lymphocyte activation in mice. NATURE COMMUNICATIONS, 8 (1), https://doi.org/10.1038/s41467-017-01022-4.
Access StatusOpen Access
The Tet-On/Off system for conditional transgene expression constitutes state-of-the-art technology to study gene function by facilitating inducible expression in a timed and reversible manner. Several studies documented the suitability and versatility of this system to trace lymphocyte fate and to conditionally express oncogenes or silence tumour suppressor genes in vivo. Here, we show that expression of the tetracycline/doxycycline-controlled Tet-transactivator, while tolerated well during development and in immunologically unchallenged animals, impairs the expansion of antigen-stimulated T and B cells and thereby curtails adaptive immune responses in vivo. Transactivator-mediated cytotoxicity depends on DNA binding, but can be overcome by BCL2 overexpression, suggesting that apoptosis induction upon lymphocyte activation limits cellular and humoral immune responses. Our findings suggest a possible system-intrinsic biological bias of the Tet-On/Off system in vivo that will favour the outgrowth of apoptosis resistant clones, thus possibly confounding data published using such systems.
- Click on "Export Reference in RIS Format" and choose "open with... Endnote".
- Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References