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The objective of this study was to investigate the mechanism of midazolam in inhibiting the proliferation of hypopharyngeal squamous carcinoma cells. Cultured FaDu cancer cells were treated with different concentrations of midazolam. MTT and BrdU incorporation assays were then used to evaluate cancer cell proliferation. The mRNA and protein levels of p300, a key factor involved in the tumorigenesis of numerous cancers, were measured with RT-PCR and Western blotting, respectively. Midazolam inhibited the expression of p300 and the proliferation of FaDu cells. Additionally, knockdown of p300 resulted in increased expression of p21 and p27 and decreased expression of p-Rb while inhibiting the proliferation of FaDu cells. Midazolam inhibits the proliferation of human head and neck squamous carcinoma cells by downregulating p300. Midazolam may be useful for the treatment of hypopharyngeal squamous cancers.

The objective of this study was to investigate the mechanism of midazolam in inhibiting the proliferation of hypopharyngeal squamous carcinoma cells. Cultured FaDu cancer cells were treated with different concentrations of midazolam. MTT and BrdU incorporation assays were then used to evaluate cancer cell proliferation. The mRNA and protein levels of p300, a key factor involved in the tumorigenesis of numerous cancers, were measured with RT-PCR and Western blotting, respectively. Midazolam inhibited the expression of p300 and the proliferation of FaDu cells. Additionally, knockdown of p300 resulted in increased expression of p21 and p27 and decreased expression of p-Rb while inhibiting the proliferation of FaDu cells. Midazolam inhibits the proliferation of human head and neck squamous carcinoma cells by downregulating p300. Midazolam may be useful for the treatment of hypopharyngeal squamous cancers. [ABSTRACT FROM AUTHOR]