Effects of in vivo Nutlin‐3 treatment on CSC content of Numb− and Numb+ tumors Effects of in vivo Nutlin‐3 treatment on CSC content of Numb− and Numb+

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Effects of in vivo Nutlin‐3 treatment on CSC content of Numb− and Numb+ tumors Effects of in vivo Nutlin‐3 treatment on CSC content of Numb− and Numb+ tumors AMSs derived from Numb− and Numb+ tumors were orthotopically transplanted into NGS mice and allowed to form tumors of ˜20 mm3 (dashed red line). Nutlin‐3 (Nutlin) or vehicle DMSO (Ctr) was then administered to the mice every 3 days at 20 mg/kg for a period of 12 days, at the end of which, mice were sacrificed and tumor volume was measured. Bars represent the tumor volume, expressed as the mean value of three independent experiments (± SD of a minimum of 11 to a maximum of 16 tumors). Unpaired two‐sided Student's t‐test. *P < 0.05 vs. Ctr in the matching condition was considered as significant. No significant differences were observed either in Numb− or Numb+ tumors.B, CTumors, obtained in (A) were dissociated and cells were analyzed by IB to verify the efficacy of the in vivo Nutlin‐3 treatment (B), and then either tested for MS‐forming efficiency (SFE), (C, left), or re‐transplanted orthotopically in mice for 3 weeks (C, right). In (B), panels shown in the IB were assembled either using lanes from the same blot (splicing out lanes loaded with additional controls or non‐relevant samples), or from different blots run and stained simultaneously (see also Materials and Methods). Tubulin, loading control. In (C), SFE data are mean values of three independent experiments (± SD of 12 measurements) and are expressed relative to the SFE or MS size in Ctr cells (= 100%). Unpaired two‐sided Student's t‐test. *P < 0.05 vs. Ctr in the matching condition was considered as significant (P‐value SFE: T1, 1.01E‐10; T2, 8.54E‐09; T3, 7.89E‐10; T4, 1.16E‐09). Right, bars represent the tumor volume, expressed as the mean value of three independent experiments (± SD of a minimum of 11 to a maximum of 16 tumors). Unpaired two‐sided Student's t‐test. *P < 0.05 vs. Ctr in the matching condition was considered as significant (T1, P = 4.70E‐18; T2, P = 9.27E‐15; T3, P = 5.57E‐09; T4, P = 6.94E‐09).DIHC analysis of Ki67 and activated caspase‐3 in tumors generated by the transplantation of tumor cells from animals treated as described in (A). Top, representative IHC images; bottom, quantification of IHC results (> 30,000 cells counted/sample). Scale bars = 100 μm. Daniela Tosoni et al. EMBO Mol Med. 2017;emmm.201606940 © as stated in the article, figure or figure legend