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  • Title: Enhanced gemcitabine-mediated cell killing of human lung adenocarcinoma by vector-based RNA interference against PLK1.
    Author: Zhao XY, Nie CL, Liang SF, Yuan Z, Deng HX, Wei YQ.
    Journal: Biomed Pharmacother; 2012 Dec; 66(8):597-602. PubMed ID: 23153503.
    Abstract:
    Specific PLK1 silencing may be an effective gene therapy modality of treating PLK1-overexpressed cancers. In this study, we first explored the anticancer efficacy of three different short hairpin-expressing plasmids targeting PLK1 in animal model, and then determined the combination therapy effect of gemcitabine with PLK1-shRNA as an adjuvant. Transfection of the PLK1-shRNAs to A549 lung cancer cells induced significant PLK1 depletion, growth inhibition and apoptosis. In vivo administration of PLK1-shRNA constructs to tumor-bearing mice resulted in xenograft regression. Moreover, the combination of PLK1-shRNA plus low-dose gemcitabine (GEM) produced an additive antitumor activity on the lung tumors owing to an inhibition of cancer cell survival and augmented apoptosis. These results indicated a feasible bio-chemotherapeutic strategy for cancer.
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