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Comparative Study
Journal Article
Extraction of Total RNA from Calcified Human Heart Valves for Gene Expression Analysis.
Journal of Heart Valve Disease 2017 March
BACKGROUND: The isolation of high-quality RNA is an important first step in gene expression studies. However, difficult tissue disruption, low cell content and low RNA content makes consistent RNA extraction from human aortic valve tissue a challenging task.
METHODS: A protocol has been developed for the successful isolation of high-quality RNA from human aortic valve samples by optimizing RNA extraction protocols based on a comparison of commercial kits.
RESULTS: Guanidinium thiocyanate-phenolchloroform extraction was found to be a prerequisite for successful purification. Two protocols based on this extraction were further optimized. RNA quality and quantity were assessed spectrophotometrically, using a Bioanalyzer and by PCR analysis of several housekeeping genes. Optimized parameters included storage in RNAlater™, DNase digestion, the amount of tissue, homogenization time, and freezing of tissue after homogenization.
CONCLUSIONS: The modified protocol for fatty and fibrous tissue achieved satisfactory results for gene expression analysis of human aortic valve samples.
METHODS: A protocol has been developed for the successful isolation of high-quality RNA from human aortic valve samples by optimizing RNA extraction protocols based on a comparison of commercial kits.
RESULTS: Guanidinium thiocyanate-phenolchloroform extraction was found to be a prerequisite for successful purification. Two protocols based on this extraction were further optimized. RNA quality and quantity were assessed spectrophotometrically, using a Bioanalyzer and by PCR analysis of several housekeeping genes. Optimized parameters included storage in RNAlater™, DNase digestion, the amount of tissue, homogenization time, and freezing of tissue after homogenization.
CONCLUSIONS: The modified protocol for fatty and fibrous tissue achieved satisfactory results for gene expression analysis of human aortic valve samples.
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