A novel combined capillary chip for rapid identification of gene mutation

A novel combined capillary chip for rapid identification of gene mutation
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一种快速识别基因突变的新型组合毛细管芯片

DOI:
10.1039/c2ra21934d
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发表时间:
2013-01
期刊:
影响因子:
3.9
通讯作者:
Guo, Yan-Hai
Guo, Yan-Hai
中科院分区:
化学3区
文献类型:
--
作者:
Xiang, An;Lei, Xiao-Ying;Kang, Wei;Zhao, Jin-Rong;Zhang, Ju;Wang, Qin;Bao, Han;Yan, Zhen;Guo, Yan-Hai

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为了开发一个简单的基因突变检测微平台,我们在组合微通道中使用了DNA杂交方法。用紫外交联固定寡核苷酸探针的玻璃槽,并将其包裹在透明热收缩聚乙烯管中。热处理后,聚乙烯管紧绷在玻璃槽上,被指定为组合毛细管芯片(CCC)。以10 μL反应溶液以50 μL min−1的速度来回穿梭10 min,对CCC法进行优化,得到最小0.1 nM的目标DNA序列。乙型肝炎病毒(HBV) YMDD突变检测中,单基因型占61.3%(92/150),序列分析证实为单基因型。38.7%(58/150)为混合基因型,18.9%(11/58)为序列分析漏诊。结果表明,该方法的灵敏度高于序列分析。该方法制备工艺简单,结构简单,在基因突变检测中具有较高的特异性。这些特征对临床基因突变分析具有重要意义。
To develop a simple micro-platform for gene mutation detection, we used a DNA hybridization approach in a combined microchannel. A glass groove immobilized with oligonucleotide probes by UV-crosslinking, and encased in a transparent heat-shrinkable polythene tube. After heat treatment, the polythene tube stretched tightly over the glass groove and was designated as a combined capillary chip (CCC). The CCC assay was optimized with 10 μL reaction solutions shuttling back and forth at 50 μL min−1 for 10 min, give a detection minimum of 0.1 nM target DNA sequences. In hepatitis B virus (HBV) YMDD mutations detection, 61.3% (92/150) was of a single genotype and it was authenticated with sequence analysis. The other 38.7% (58/150) was mixed genotype detected, but 18.9% (11/58) has a missed diagnosis in sequence analysis. It proved a higher sensitivity than sequence analysis. The CCC assay has a simple fabricating process, simple structure and higher specificity in gene mutation detection. These features are promising for clinical gene mutation analysis.
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