인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
개인구독
소속 기관이 없으신 경우, 개인 정기구독을 하시면 저렴하게
논문을 무제한 열람 이용할 수 있어요.
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Catalytic DNA circuits hold significant promise for nucleic-acid-based diagnostics, yet they remain hindered by slow reaction kinetics and the non-universal nature of one-pot approaches. Here, a universal catalytic DNA circuits termed TACTIC (Thermus thermophilus Argonaute (TtAgo) protein-driven autocatalytic circuit) is developed for one-pot detection of DNA and RNA in multiple clinical samples. TACTIC employs the heat-activated cleavage activity of TtAgo to accelerate reaction kinetics of rolling circle amplification (RCA) by producing an efficient circular template with Gibbs free energy approaching zero at 70. Combined with TtAgo cleavage-mediated explosive regeneration and accumulation of target mimics, an autocatalytic positive-feedback circuit is successfully constructed for universal and sensitive detection of nucleic acid biomarkers. Efficient TACTIC is developed by increasing 381% amplification efficiency and achieved detection sensitivity at the attomolar (aM) level. TACTIC enables rapid one-pot detection of bacterial DNA, mutant mRNA, and four extracellular vesicle-derived miRNAs (EV miRNAs) within 30 min. Integrated with machine learning, the distinct expression patterns of four EV miRNAs across different biofluids are accurately profiled, and machine learning-driven diagnostic and staging models for breast cancer are established within a clinical cohort. TACTIC offers new insights for advancing higher-order catalytic circuits and expanding the toolbox for accurate nucleic acid detection.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.