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Objectives   Recently, immunotherapy and microRNA have shown much more promises in oncology research, inspiring new hope for a cure for various malignancies. Specifically, the function and mechanisms of action of pembrolizumab have been investigated in many cancers, but not in laryngeal squamous cell carcinoma. The present study thus focused on the effect of hsa-miR-128a on pembrolizumab in laryngeal cancer cells as well as tried to elucidate the mechanisms that may mediate this effect.Methods   Hep2 and AMC-HN8 cell lines were utilized to create stable cell lines that overexpressing hsa-miR-128a. Using the immunotherapy assay, the contribution of hsa-miR-128a to pembrolizumab sensitivity was evaluated. By performing the dual luciferase assay and quantitative real-time polymerase chain reaction, the possible mechanisms of hsa-miR-128a were identified.Results   Hsa-miR-128a was overexpressed in laryngeal cancer cell lines successfully. The immunotherapy assay revealed that upregulating hsa-miR-128a augmented the effect of pembrolizumab. Moreover, hsa-miR-128a targeted BMI-1 and might played a role in the p53 pathway.Conclusion   Hsa-miR-128a boosted the effect of pembrolizumab on laryngeal cancer cells, perhaps via the p53 pathway. Therefore, hsa-miR-128a might be a novel target in laryngeal cancer treatment.

Upregulating hsa-miR-128a Increased the Effects of Pembrolizumab on Laryngeal Cancer Cells via the p53 Pathway