Design of the hCTLA-4/hLAG3 mouse
The double-humanized CTLA-4 and LAG3 mouse model (hCTLA-4/hLAG3) was generated by intercrossing hCTLA-4 and hLAG3 mice.
The design of hCTLA-4, developed by Knockin at the mouse Ctla-4 locus, enables the expression of: a) the full-length chimeric CTLA-4 isoform (human extracellular domain and mouse intracellular domain); and b) the soluble isoform (human extracellular domain).
The hLAG3 humanized model, developed by Knockin at the mouse Lag3 locus, expresses the full length chimeric LAG3 isoform (human signal peptide, human extracellular domains, and mouse transmembrane and intracellular domains).
Both hCTLA-4 and hLAG3 expressions are regulated by endogenous mouse promoters.