Volumetric live-cell autofluorescence imaging using Fourier light-field microscopy

This study introduces a rapid, volumetric live-cell imaging technique for visualizing autofluorescent sub-cellular structures and their dynamics by employing high-resolution Fourier light-field microscopy. We demonstrated this method by capturing lysosomal autofluorescence in fibroblasts and HeLa cells. Additionally, we conducted multicolor imaging to simultaneously observe lysosomal autofluorescence and fluorescently-labeled organelles such as lysosomes and mitochondria. We further analyzed the data to quantify the interactions between lysosomes and mitochondria. This research lays the foundation for future exploration of native cellular states and functions in three-dimensional environments, effectively reducing photodamage and eliminating the necessity for exogenous labels.& COPY; 2023 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

This study presents a rapid, volumetric live-cell imaging technique using high-resolution Fourier light-field microscopy to visualize autofluorescent sub-cellular structures and their dynamics. Lysosomal autofluorescence in fibroblasts and HeLa cells was observed, and multicolor imaging allowed simultaneous observation of lysosomal autofluorescence and fluorescently-labeled organelles such as lysosomes and mitochondria. Data analysis provided quantitative measurements of lysosome-mitochondria interactions. This research paves the way for future exploration of native cellular states and functions in three-dimensional environments, offering advantages of reduced photodamage and elimination of exogenous labels.