Journal: Nature cancer
Article Title: The efficacy of chemotherapy is limited by intratumoral senescent cells expressing PD-L2.
doi: 10.1038/s43018-023-00712-x
Figure Lengend Snippet: Fig. 1 | PD-L2 is upregulated in human and murine cancer cell lines on induction of cellular senescence. a,b, Representative images of SA-β-gal staining (a, scale bar, 50 μm) and PD-L1 and PD-L2 mRNA expression in human cancer cell lines treated with palbociclib (b, n = 3 experiments). c, PD-L1 and PD- L2 mRNA expression in murine cancer cell lines after treatment with doxorubicin (n = 3 experiments). d, PD-L1 and PD-L2 mRNA expression in SK-MEL-103 xenograft tumors in nude mice, treated with 100 mg kg−1 oral palbociclib for 10 days and euthanized after the treatment. Control (n = 6 tumors); palbociclib- treated tumors (n = 7). e, PD-L1 and PD-L2 mRNA expression in HCmel3 tumors in C57BL/6 mice treated with 5 mg kg−1 doxorubicin (days 7, 10 and 17), analyzed after day 19. Control (n = 3 tumors); doxorubicin-treated tumors (n = 6). f, PD-L1 and PD-L2 mRNA expression in SK-MEL-28 cells treated with doxorubicin and then with the IKK inhibitor BAY 11-7082 (3 μM, 24 h, n = 3 experiments). g, PD-L1 and PD-L2 mRNA expression in SK-MEL-28 cells treated with TNF-α (100 ng ml−1, 3 days, n = 3 experiments). h, Quantification of PD-L2 protein levels using flow
Article Snippet: For IKK inhibition, cells were treated at day 6 with either vehicle (dimethylsulfoxide) or the IKK inhibitor BAY 11-7082 (Selleck Chemicals) at 3 μM for 24 h. Human TNF-α recombinant protein (Thermo Fisher Scientific) was used at 100 ng ml−1 for 3 days.
Techniques: Staining, Expressing, Control