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Multicolor fluorescence detection of ribosomal RNA in microchannels

机译:微通道核糖体RNA的多色荧光检测

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Abstract: A micro fluidic device capable of detecting the abundance of bacteria in an environmental solution is described. The micro channels are made of poly(dimethylsioxane) (PDMS) elastomer integrated with fused silica capillaries coated with Aluminum. The detection of specific bacteria is based on molecular probes (beacons) that emit a fluorescent signal only when hybridized to the target. This method allows hybridization in solution, without immobilization, and avoids washing of the unbound probes. By marking 16S rDNA oligonucleotide probes (different genetic sequences) with different color dyes, and detecting the spectral intensity of light in the micro- channel, different micro-organisms can be detected in one sample. Miniaturization of the analytic device allows the use of small quantities of RNA molecules, as target molecules, and improves the detection limits. Future devices should incorporate a parallel array of micro-channels, and enable fast and parallel processing of the molecular signals. !10
机译:摘要:描述了一种能够检测环境溶液中细菌含量的微流体装置。微通道由聚二甲基硅氧烷(PDMS)弹性体制成,该弹性体与涂有铝的熔融石英毛细管结合在一起。特定细菌的检测基于分子探针(信标),仅当与靶标杂交时才会发出荧光信号。该方法允许在溶液中杂交而不固定,并且避免洗涤未结合的探针。通过用不同的颜色标记16S rDNA寡核苷酸探针(不同的基因序列),并检测微通道中光的光谱强度,可以在一个样品中检测到不同的微生物。分析装置的小型化允许使用少量RNA分子作为目标分子,并提高了检测限。未来的设备应该包含微通道的并行阵列,并能够对分子信号进行快速和并行处理。 !10

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