期刊
ANALYTICA CHIMICA ACTA
卷 1265, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.aca.2023.341343
关键词
Array sensing; DNA chip technology; Allele-specific techniques; Mutations in oncogenes
In the context of personalized and cost-effective treatment, knowing the mutation status of specific genes can help predict which patients will respond to therapies. The presented genotyping tool uses a colorimetric DNA array to detect multiple polymorphic sequences with a single nucleotide variation, providing an alternative to one-by-one detection or massive sequencing. The developed technology, which includes sequence-tailored probes and PCR with SuperSelective primers, offers a fast, cheap, and reproducible method for discriminating oncological patients.
In the context of personalized and cost-effective treatment, knowledge of the mutational status of specific genes is advantageous to predict which patients are responsive to therapies. As an alternative to one-by-one detection or massive sequencing, the presented genotyping tool determines multiple polymorphic sequences that vary a single nucleotide. The biosensing method includes an effective enrichment of mutant variants and selective recognition by colorimetric DNA arrays. The proposed approach is the hybridization between sequence-tailored probes and products from PCR with SuperSelective primers to discriminate specific variants in a single locus. A fluorescence scanner, a documental scanner, or a smartphone captured the chip images to obtain spot intensities. Hence, specific recognition patterns identified any single-nucleotide change in the wild-type sequence over- coming qPCR methods and other array-based approaches. Studied mutational analyses applied to human cell lines provided high discrimination factors, the precision was 95%, and the sensitivity was 1% mutant of total DNA. Also, the methods showed a selective genotyping of the KRAS gene from tumorous samples (tissue and liquid biopsy), corroborating results by NGS. The developed technology supported on low-cost robust chips and optical reading provides an attractive pathway toward implementing fast, cheap, reproducible discrimination of oncological patients.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据