Thus, the Tyr promoter drove EGFP expression specifically in B16-F10 melanoma cells, although NPTyr-C9AP indiscriminately delivered pTyr-C9AP into different cells, demonstrating the potential melanoma specificity of NPTyr-C9AP for expressing the target genes (CXCL9 and αPD-L1). The gene discussed is CXCL9; the disease is melanoma.