was completely photoinactivated. Time‐resolved confocal fluorescence microscopy analysis suggests that the photoprobe sticks onto the outer rim of the microorganisms, explaining the resistance of Gram‐negative species on the basis of their membrane constitution. The mannose‐conjugated photoprobe yields a different readout because it is able to label and to inactivate only the Gram‐positive strain.
具有双峰光活性的
碳水化合物共轭
硅(IV)
酞菁被开发为具有荧光标记和光敏功能的探针,并探索了革兰氏阳性和革兰氏阴性模型的伴随荧光标记和光致失活。
麦芽六糖缀合的光探针提供双重读数,以区分两组病原体,因为只有革兰氏阳性菌种被灭活,即使它们都被标记为近红外发光。抗生素耐药性没有阻碍光毒性作用,即使是耐
甲氧西林的病原体
金黄色葡萄球菌(MRSA)完全被光灭活。时间分辨共聚焦荧光显微镜分析表明,光探针粘在微
生物的外缘上,从而根据革兰氏阴性菌的膜组成解释了它们的抗性。
甘露糖偶联的光探针产生不同的读数,因为它只能标记革兰氏阳性菌株并使之灭活。