The present invention relates to a peptide nucleic acid (PNA) conjugated with multi-amine linkers, and a method to prepare the same and utilization thereof. More specifically, the method is characterized by conjugating monomers having multi-amine functionality sequentially at a PNA terminal, and effectively immobilizing the PNA conjugated with multi-amine linkers on a solid surface. A PNA array prepared using the PNA conjugated with multi-amine linkers exhibits improved sensitivity and specificity of signals for detecting target nucleic acids as compared to a PNA array using PNA probes having only one amine group. The PNA conjugated with multi-amine linkers can be utilized in nucleic acid detecting devices or kits for gene diagnosis such as PNA microarrays, PNA chips, PNA field-effect transistors and impedance detectors.
本发明涉及一种与
多胺连接物共轭的肽核酸(
PNA),以及其制备方法和利用方法。更具体地说,该方法的特点是将具有
多胺官能团的单体依次共轭到
PNA末端,并有效地固定带有
多胺连接物的
PNA在固体表面上。使用带有
多胺连接物的
PNA制备的
PNA阵列与仅具有一个胺基的
PNA探针相比,显示出更高的信号灵敏度和特异性,可用于检测目标核酸。带有
多胺连接物的
PNA可用于核酸检测设备或
基因诊断工具,例如
PNA微阵列、
PNA芯片、
PNA场效应晶体管和阻抗检测器。