RNA sequencing of PD-L1 knock out human MDA-MB231 cells and mouse CT26 cells

Although membrane-anchored PD-L1 has been well-studied for its engagement with PD-1 on T cells to evade anti-tumor immunity, whether PD-L1 regulate oncogenic signaling pathways in tumor cells remains elusive. Methods: Total RNA from MDA-MB-231 wild type (WT) , MDA-MB-231 PD-L1 knock-out (KO), CT26 WT or CT26 Pd-l1 KO cells was purified using Qiagen RNeasy mini kit (Qiagen) according to the manufacturer's instructions. Library preparation and sequenceing analysis were performed at the Molecular Genetics Core facility in Dana-Farber Cancer institute. RNA-seq data was aligned using STAR v2.5.4a. Conclusions: Our study indicates that PD-L1 may regulate genes that are involved in immune response regulating pathways. Overall design: Total RNA was extracted from MDA-MB-231 cells and CT26 cells for the following genotypes PD-L1 wild type (PD-L1 WT) and knock out (PD-L1 KO). Each group has four repeats.