Design of the hGITR/hGITRL mouse
The double-humanized GITR and GITRL mouse model (hGITR/hGITRL) was generated by intercrossing hGITR and hGITRL mice.
hGITR was developed by inserting, within the mouse GITR locus, a chimeric GITR with the human extracellular and the murine intracellular domain.
hGITRL was generated by inserting, within the mouse GITRL locus, a chimeric GITRL with the human extracellular and the murine intracellular domain.
Both hGITR and hGITRL expressions are regulated by endogenous mouse promoters.
hGITR/hGITRL features
- GITR and GITRL extracellular domains are entirely humanized
- hGITR and hGITRL expression driven by the respective endogenous mouse promoter
- Preservation of the target-ligand interaction
- Fully functional mouse immune system
- Lack of expression of the murine target gene, thus avoiding cross-reactivity