Fig. 5: Tumour intrinsic PD-L1 promotes Gas6 transcription and secretion.

a, b qRT-PCR analysis of Gas6 and PROS1 mRNA expression levels in stable PD-L1 knockdown and overexpression cell lines. c The basal secretion level of Gas6 in PD-L1 stable cell lines and control cells. Data were presented as the mean ± SD. Data were analysed using non-paired Student’s t test, one-way ANOVA analysis followed by Bonferroni’s post hoc test. **P < 0.01; ***P < 0.001 vs. control or as indicated.