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    • 10. 发明申请
    • Solid-phase chelators and electronic biosensors
    • 固相螯合剂和电子生物传感器
    • US20110159481A1
    • 2011-06-30
    • US12655459
    • 2009-12-30
    • David J. LiuXing SuKai Wu
    • David J. LiuXing SuKai Wu
    • C12Q1/68G01N33/50G01N27/26
    • C12Q1/48C12Q1/6837C12Q1/6869G01N27/4145G01N2333/9125C12Q2565/607C12Q2565/507C12Q2565/301
    • Methods for sequencing nucleic acids are presented. Sequencing is accomplished through the chemical amplification of the products of DNA synthesis and the detection of the chemically amplified products. In embodiments of the invention, a substrate is provided having a plurality of molecules of DNA to be sequenced attached and a plurality of molecules capable of chelating pyrophosphate ions attached, the DNA molecules to be sequenced are primed, and a next complementary nucleotide is incorporated and excised a plurality of times leading to the buildup of pyrophosphate ions locally around the DNA molecule to be sequenced. Pyrophosphate ions are captured by the substrate-attached chelators and electronically detected to determine the identity of the next complementary nucleic acid in the DNA molecule to be sequenced. Additionally, devices and methods are provided for detecting biomolecules through the detection of pyrophosphate ions.
    • 介绍了核酸测序方法。 通过化学扩增DNA合成产物和化学扩增产物的检测来完成测序。 在本发明的实施方案中,提供了具有多个待测序的DNA分子的底物和能够螯合连接的焦磷酸根离子的多个分子,引入待测序的DNA分子,并且掺入下一个互补核苷酸, 切除多次导致待测序的DNA分子局部周围的焦磷酸盐离子的积聚。 焦磷酸根离子被底物连接的螯合剂捕获并电子检测以确定待测序的DNA分子中下一个互补核酸的同一性。 另外,提供了通过检测焦磷酸根离子来检测生物分子的装置和方法。