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PD-L1 immune suppression in cancer: Tumor cells or host cells?

ORCID Icon, ORCID Icon, ORCID Icon & ORCID Icon
Article: e1325982 | Received 24 Apr 2017, Accepted 26 Apr 2017, Published online: 28 Jun 2017

Figures & data

Figure 1. PD-L1 expression on tumor cells and host cells jointly support tumor outgrowth. Left: in a typical immunogenic tumor, both tumor cells and intratumoral host cells express PD-L1, resulting in progressive tumor growth. Middle: experimental genetic deletion of PD-L1 on tumor cells or the host results in reduced tumor growth, mediated by CD8 T cells. Right: complete removal of PD-L1 expression by addition of blocking antibodies results in tumor eradication.

Figure 1. PD-L1 expression on tumor cells and host cells jointly support tumor outgrowth. Left: in a typical immunogenic tumor, both tumor cells and intratumoral host cells express PD-L1, resulting in progressive tumor growth. Middle: experimental genetic deletion of PD-L1 on tumor cells or the host results in reduced tumor growth, mediated by CD8 T cells. Right: complete removal of PD-L1 expression by addition of blocking antibodies results in tumor eradication.