인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
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
Peroxynitrite (ONOO<sup>-</sup>) is central to both physiological signaling and diverse pathological processes. Its dual nature underscores the need for precise tools to investigate its spatiotemporal dynamics and biological functions. However, the controlled generation and real-time tracking of ONOO<sup>-</sup> remain challenging due to its short half-life and high reactivity. Current small-molecule ONOO<sup>-</sup> donors often suffer from limitations such as slow release, low efficiency, and off-target effects. To overcome these challenges, here we report a new class of photo-triggered ONOO<sup>-</sup> donors (<b>O-PND</b> and <b>Si-PND</b>) based on a single rhodamine-derived scaffold, enabling precise ONOO<sup>-</sup> release with built-in fluorescence calibration. These molecular tools facilitate efficient ONOO<sup>-</sup> generation under blue light irradiation, as confirmed in PBS and live cells, and exhibit excellent cell membrane permeability. Upon intracellular activation, <b>O-PND</b> and <b>Si-PND</b> induced a marked increase in oxidative stress. However, further studies reveal that the rapid transient ONOO<sup>-</sup> burst in RAW264.7 cells was insufficient to significantly modulate macrophage polarization. Collectively, these robust self-reporting ONOO<sup>-</sup> donors provide a powerful single-molecule platform for investigating ONOO<sup>-</sup>-mediated biological mechanisms with spatiotemporal precision.
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.