Journal: bioRxiv
Article Title: Cell-of-origin and genetic drivers define advanced bladder cancer subtypes and potential therapeutic response in mouse models
doi: 10.1101/2025.07.14.664768
Figure Lengend Snippet: In vitro analysis of mouse BC cell lines derived from K5-positive cells isolated from DKO (4K5; top) and QKO (K5.6; bottom) tumors: (A) sensitivity to palbociclib assessed by XTT assays. Data are presented as mean ± SEM; (B) Cell-cycle changes following palbociclib treatment for 48 hours at the IC 50 analyzed by flow cytometry; (C) Induction of PD-L1 expression after palbociclib treatment, depicting the percentage of live cells with high PD-L1 expression (left axis) and the mean fluorescence intensity (MFI) of PD-L1 (right axis), as assessed by flow cytometry. In B and C, data are presented as mean ± SD from three independent experiments, with the average value of each experiment shown as a single data point. D. In vivo evaluation of palbociclib monotherapy or combined with avelumab (anti-PD-L1) using immunocompetent syngeneic graft models of BC (DKO-K5, top; QKO-K5, bottom). Spider plots show normalized tumor growth curves for each treatment group relative to baseline. The dotted line indicates the threshold for non-responders, defined as half the average tumor volume of the control group. R = responders. E. Comparison of normalized tumor volumes (relative to baseline) between treatment groups at mid-treatment and the end of treatment for both models. Data from each individual are shown, along with the mean ± SD. C = control; P = palbociclib; A = avelumab; P+A = combination palbociclib plus avelumab. ns = not significant; *p-value< 0.05; **p- value< 0.01; ***p-value< 0.001; ****p-value< 0.0001.
Article Snippet: Palbociclib (CDK4/6 inhibitor) and avelumab (human anti-PD-L1 that recognized murine epitope) were provided by Pfizer SLU España (CPT Grant Request ID: 60314347, Project ID: WI235570).
Techniques: In Vitro, Derivative Assay, Isolation, Flow Cytometry, Expressing, Fluorescence, In Vivo, Control, Comparison