tailieunhanh - báo cáo hóa học:" High throughput RNAi assay optimization using adherent cell cytometry"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học đề tài : High throughput RNAi assay optimization using adherent cell cytometry | Nabzdyk et al. Journal of Translational Medicine 2011 9 48 http content 9 1 48 JOURNAL OF TRANSLATIONAL MEDICINE METHODOLOGY Open Access High throughput RNAi assay optimization using adherent cell cytometry Christoph S Nabzdyk Maggie Chun Leena Pradhan and Frank W LoGerfo Abstract Background siRNA technology is a promising tool for gene therapy of vascular disease. Due to the multitude of reagents and cell types RNAi experiment optimization can be time-consuming. In this study adherent cell cytometry was used to rapidly optimize siRNA transfection in human aortic vascular smooth muscle cells AoSMC . Methods AoSMC were seeded at a density of 3000-8000 cells well of a 96well plate. 24 hours later AoSMC were transfected with either non-targeting unlabeled siRNA 50 nM or non-targeting labeled siRNA siGLO Red 5 or 50 nM using no transfection reagent HiPerfect or Lipofectamine RNAiMax. For counting cells Hoechst nuclei stain or Cell Tracker green were used. For data analysis an adherent cell cytometer Celigo was used. Data was normalized to the transfection reagent alone group and expressed as red pixel count cell. Results After 24 hours none of the transfection conditions led to cell loss. Red fluorescence counts were normalized to the AoSMC count. RNAiMax was more potent compared to HiPerfect or no transfection reagent at 5 nM siGLO Red vs. vs. red pixel cell and 50 nM siGLO Red vs. vs. . Fluorescence expression results supported gene knockdown achieved by using MARCKS targeting siRNA in AoSMCs. Conclusion This study underscores that RNAi delivery depends heavily on the choice of delivery method. Adherent cell cytometry can be used as a high throughput-screening tool for the optimization of RNAi assays. This technology can accelerate in vitro cell assays and thus save costs. Keywords RNAi vascular adherent cell cytometry in vitro assay high throughput Background RNAi .

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