Figure 7. CircRHOT1 promotes the tumor growth of breast cancer in vivo. (A–E) The effect of circRHOT1 on tumor growth of breast cancer cells in vivo was analyzed by nude mice tumorigenicity assay by injected with the MDA-MB-231 cells treated with control shRNA or circRHOT1 shRNA. (A) Representative images of dissected tumors from nude mice were presented. (B) The average tumor volume was calculated and shown. (C) The average tumor weight was calculated and shown. (D) The expression levels of miR-106a-5p were measured by qPCR in the tumor tissues of the mice. (E) The protein expression of STAT3 and β-actin was assessed by Western blot analysis in the tumor tissues of the mice. N = 5. Data are presented as mean ± SD. Statistic significant differences were indicated: ** P < 0.01.