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. 2018:1754:29-44.
doi: 10.1007/978-1-4939-7717-8_3.

Capture Hybridization of Long-Range DNA Fragments for High-Throughput Sequencing

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Capture Hybridization of Long-Range DNA Fragments for High-Throughput Sequencing

Xing Chen et al. Methods Mol Biol. 2018.

Abstract

Capture hybridization coupled with high-throughput sequencing (HTS) has become one of the most popular approaches to address some scientific problems not only for fundamental evolution but also for ecology and human disease in recent years. However, the technical problem of limited probe capture ability affects its widespread application. Here, we propose to capture hybridize long-range DNA fragments for HTS (termed LR-LCH). We provide a case of three amphibian samples to examine LR-LCH with 2 kb libraries and comparison of standard capture hybridization with 480 bp libraries. Capture sensitivity increased from an average 13.57% of standard capture hybridization to an average 19.80% of LR-LCH; capture efficiency also increased from an average 72.56% of standard capture hybridization to an average 97.71% of LR-LCH. These indicate that longer fragments in the library generally contain both relatively variable regions and relatively conservative regions. The divergent parts of target DNA are enriched along with conservative parts of DNA sequence that effectively captured during hybridization. We present a protocol that allows users to overcome the low capture sensitivity problem for high divergent regions.

Keywords: Capture hybridization; Long-range PCR; Mitochondrial genome; NGS.

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