Fig. 1: PH potentiates the growth inhibition of 5FU and Oxaliplatin in PDAC cells.

A–C The indicated cancer cell lines were treated with various concentration of 5FU (15 μM) and Oxaliplatin (25 μM), paricalcitol (350 nM), and hydroxychloroquine (25 μM) for 3 days and subjected to MTT assays. Relative percentage cell viability was plotted with respect to DMSO treated cells. D The indicated cancer cell lines were treated with DMSO, PH, 5FU+oxali, and combination (PH + 5FU+Oxali) for 2–4 weeks, and long-term cell survival was measured using clonogenic assays. Representative images are shown. E Colony counts from the clonogenic assay data shown in (D). Data represent the mean ± standard error of three biological replicates. Statistical significance was assessed using two-way ANOVA. ns not significant, *p < 0.05, ****p < 0.0001.