2020
DOI: 10.1101/2020.06.07.136366
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Th17 cells contribute to combination MEK inhibitor and anti-PD-L1 therapy resistance inKRAS/p53mutant lung cancers

Abstract: Understanding resistance mechanisms to targeted therapies and immune checkpoint blockade in mutant KRAS lung cancers is critical to developing novel combination therapies and improving patient survival. Here, we show that MEK inhibition enhanced PD-L1 expression while PD-L1 blockade upregulated MAPK signaling in mutant KRAS lung tumors. Combined MEK inhibition with anti-PD-L1 synergistically reduced lung tumor growth and metastasis, but tumors eventually developed resistance to sustained combinatorial therapy.… Show more

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