Ratiometric imaging by two-photon microscopy can offer a viable tool for the relative quantification of biological analytes inside tissue with minimal influence from environmental factors that affect fluorescence signal. We demonstrate the ratiometric imaging of formaldehyde at the suborgan level using a two-photon fluorescent probe, which involves pixel-to-pixel ratiometric data transformation. This study reveals for the first time a high level of formaldehyde around the crypts of mouse small intestine, implicating its possible protective role along with the released antimicrobials from the Paneth cells.
利用双光子显微镜进行比率成像可为组织内
生物分析物的相对定量提供一种可行的工具,同时将影响荧光信号的环境因素的影响降至最低。我们展示了利用双光子荧光探针在亚器官
水平上对
甲醛进行比率测量成像,其中涉及像素到像素的比率测量数据转换。这项研究首次揭示了小鼠小肠隐窝周围的高
水平
甲醛,这意味着
甲醛可能与Paneth细胞释放的抗菌素一起起到保护作用。