miRNA微阵列检测

Figure 3. Target specificity of two-temperature array detection of miRNAs with two LNA probes. The sequences of the five Let-7 miRNAs are given under the graph.
Two-Temperature Hybridization for Microarray Detection of Label-Free MicroRNAs with Attomole Detection and Superior Specificity
—在两个温度下杂交进行miRNA微阵列检测 一种高灵敏度高特异性的的方法
Figure 2. b) Fluorescence images of microarray detection of human Let-7a (top) and miR96 (bottom), and the corresponding miRNAs with a single base mismatch (Let-7c and miR96-C, sequences in Figure 2a) under various two-temperature hybridization conditions.
1pM
Figure 4. a) Concentrationdependent fluorescence signals for four miRNAs (human Let-7a, miR21, miR96, and miR206). Fluorescence images of human Let7a (10 fm-10 pm) array detection are shown. b) Fluorescence micro-array detection of five human miRNAs from human skeletal muscle (left) or heart (middle) total RNA extracts (2 mg). Synthetic miR96 (1pM) was added to the heart RNA extract (right).
原理图
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Figure 2. a) These capture and detection probes were 10-12 nt in length with different numbers of G, C, and LNA residues. The miRNA capture and detection steps were performed at different temperatures,which each ranged from 25 ℃ to 58 ℃.
Jeong Min Lee and Yongwon Jung*
small size and low abundance of miRNAs — improving the design of probes and the labeling of the miRNAs→introduce quantitative biases and experimental errors The design of short, complementary probes that are capable of discriminating miRNAs with a single base mismatch from the perfectly matched miRNAs at a given hybridization temperature is a difficulty.