PD-L1 has been extensively described as the membrane-bound ligand of PD-1. A recent study discovered a previously unknown role for PD-L1, which is able to bind DNA and thus govern different pathways linked to either evasion of immune surveillance or tumour microenvironment inflammation.

中文翻译：

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PD-L1的隐藏面。

PD-L1已被广泛描述为PD-1的膜结合配体。最近的一项研究发现了PD-L1的以前未知的作用，它能够结合DNA，从而控制与逃避免疫监视或肿瘤微环境炎症相关的不同途径。