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TEZCAN, GÜLÇİN

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  • YayınAçık Erişim
    Doxycycline attenuates cancer cell growth by suppressing NLRP3-mediated inflammation
    (Mdpi, 2021-08-24) Alsaadi, Mohammad; Tezcan, Gülçin; Garanina, Ekaterina E.; Hamza, Shaimaa; McIntyre, Alan; Rizvanov, Albert A.; Khaiboullina, Svetlana F.; TEZCAN, GÜLÇİN; Bursa Uludağ Üniversitesi/Diş Hekimliği Fakültesi/Temel Bilimler Bölümü.; 0000-0002-5956-8755; AAH-3843-2020
    NLR family pyrin domain containing 3 (NLRP3) inflammasome formation is triggered by the damaged mitochondria releasing reactive oxygen species. Doxycycline was shown to regulate inflammation; however, its effect on NLRP3 in cancer remains largely unknown. Therefore, we sought to determine the effect of doxycycline on NLRP3 regulation in cancer using an in vitro model. NLRP3 was activated in a prostate cancer cell line (PC3) and a lung cancer cell line (A549) before treatment with doxycycline. Inflammasome activation was assessed by analyzing RNA expression of NLRP3, Pro-CASP-1, and Pro-IL1 beta using RT-qPCR. Additionally, NLPR3 protein expression and IL-1 beta secretion were analyzed using Western blot and ELISA, respectively. Tumor cell viability was determined using Annexin V staining and a cell proliferation assay. Cytokine secretion was analyzed using a 41Plex assay for human cytokines. Data were analyzed using one-way ANOVA model with Tukey's post hoc tests. Doxycycline treatment decreased NLRP3 formation in PC3 and A549 cells compared to untreated and LPS only treated cells (p < 0.05). Doxycycline also decreased proliferation and caused cell death through apoptosis, a response that differed to the LPS-Nigericin mediated pyroptosis. Our findings suggest that doxycycline inhibits LPS priming of NLRP3 and reduces tumor progression through early apoptosis in cancer.