Abstract:
본 발명은 표적물질 검출용 헤어핀형 프로브(probe) 및 이를 이용한 표적물질 검출방법에 대한 것으로, 특히 표적물질 인식부위를 포함하는 루프(loop)와, 전기화학적 신호물질이 결합된 압타머(aptamer)를 포함하는 스템(stem)으로 이루어진 표적물질 검출용 헤어핀형 프로브를 특징으로 하고, 표적물질과 혼성화시에 헤어핀 구조가 깨짐으로써 상기 신호물질이 압타머로부터 분리되어 전극까지 자유롭게 이동 가능하며, 이에 따라 발생하는 전기화학적 신호의 변화에 의해 표적물질의 양을 실시간으로 정확하게 검출할 수 있는 효과가 있다.
Abstract:
The present invention relates to an aptamer-based isothermal nucleic acid amplification (APINA) which specifically combines with target materials and to a method for detecting ultra-high sensitive biomolecules using the same and, more specifically, to an aptamer-based isothermal nucleic acid amplification which specifically combines with physiological active substances and to a method for detecting DNA, protein, or physiological active substances with ultra-high sensitivity using the same. According to the present invention, the APINA solves problems which requires temperature changes of conventional nucleic acid amplificaltion method (PCR) which is the biggest obstacle for performing current nucleic acid test into field diagnosis techniques in order to have competitiveness in in-vitro diagnosis so that enormous creation of economic and industrial values can be expected, and is useful for detecting target materials (DNA, protein, and physiological active substances) with high sensitivity by applying the developed APINA to immune tests.
Abstract:
PURPOSE: A method for detecting target genes or mutations thereof is provided to analyze multiple samples for mutation simultaneously, rapidly, and accurately and analyze mass-synthesized deoxyribonucleic acid fragments using mass spectroscopy, thereby ensuring excellent sensitivity, specificity, and reproducibility. CONSTITUTION: A method for detecting mutations in target genes comprises the following steps. A polymerase chain reaction is performed to manufacture amplification products having mutation positions. A ligase reaction is performed on the amplification products by means of the first probe and the second probe which bind a 5' region with a 3' region complimentarily. A nicking enzyme amplification reaction is performed after adding mixed solutions of a primer for nicking enzyme amplification, a nicking enzyme, and a polymerase into the reaction product from the previous step. After checking the presence of deoxyribonucleic acid(DNA) fragments in the reaction product from the previous step, checking the presence of mutations of the target genes is performed.
Abstract:
PURPOSE: A DNA chip for diagnosing genitourinary infection is provided to ensure sensitivity, specificity, and productivity, and to quickly and accurately detect genitourinary infection by 14 kinds of bacteria causing genitourinary infection. CONSTITUTION: A DNA chip for diagnosing genitourinary infection contains a fixed oligonucleotide probe with bases of sequence numbers 1-14. The oligonucleotide probe is hybridized with DNA of bacteria causing genitourinary infection. [Reference numerals] (AA) DAN extraction; (BB) Mixing and denaturatior; (CC) Chip Hybridization; (DD) Extracted DNA; (EE) Amplified DNA; (FF) Hybridization reaction; (GG) Washing; (HH) DNA Chip scan;