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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Oncoimmunology 2016 ; 5 (11): ä Nephropedia Template TP
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Growth and metastasis of lung adenocarcinoma is potentiated by BMP4-mediated immunosuppression #MMPMID27999749
Chen L; Yi X; Goswami S; Ahn YH; Roybal JD; Yang Y; Diao L; Peng D; Peng D; Fradette JJ; Wang J; Byers LA; Kurie JM; Ullrich SE; Qin FXF; Gibbons DL
Oncoimmunology 2016[]; 5 (11): ä PMID27999749show ga
Cancer cells modulate the recruitment and function of inflammatory cells to create an immunosuppressive microenvironment that favors tumor growth and metastasis. However, the tumor-derived regulatory programs that promote intratumoral immunosuppression remain poorly defined. Here, we show in a KrasLA1/+p53R172H?g/+-based mouse model that bone morphogenetic protein-4 (BMP4) augments the expression of the T cell co-inhibitory receptor ligand PD-L1 in the mesenchymal subset of lung cancer cells, leading to profound CD8+ T cell-mediated immunosuppression, producing tumor growth and metastasis. We previously reported in this model that BMP4 functions as a pro-tumorigenic factor regulated by miR-200 via GATA4/6. Thus, BMP4?mediated immunosuppression is part of a larger miR?200?directed gene expression program in tumors that promotes tumor progression, which could have important implications for cancer treatment.