CD274 and neoplasm: Meanwhile, Western blot analysis unraveled that LINC00665 overexpression alone led to up-regulated protein levels of UCHL3, AhR and PD-L1 in tumor tissues from irradiation-treated tumor-bearing mice, and its combination with AhR silencing led to relatively decreased protein levels of AhR and PD-L1 and almost unchanged UCHL3 expression (Fig. 7D).