Figure 1. IL4Rα promotes the growth of mammary tumors at the primary site.
R221a or 4T1 sh-control (Ctl) or IL4Rα knockdown (KD) cells were orthotopically injected into the 4th mammary gland of mice. A) Representation of tumor latency for R221a (left, p < .0001) and 4T1 (right, p = NS) mammary tumors (R221a n = 16; 4T1 n = 14). B) Graphs of R221a (left) and 4T1 (right) mammary tumor volume over time calculated from tumor dimensions (R221a n = 16; 4T1 n = 14). C) Quantification of total Ki67 D) or cleaved caspase-3 positive area per 4T1 IL4Rα KD or sh-control mammary tumor area (n = 11). Murine tumor growth data represented in A&B was repeated with similar results obtained.