학술논문

Dynamic super-resolution structured illumination imaging in the living brain
Document Type
article
Source
Proceedings of the National Academy of Sciences of the United States of America. 116(19)
Subject
Bioengineering
Neurosciences
Underpinning research
1.1 Normal biological development and functioning
Neurological
Animals
Brain
Dendrites
Dendritic Spines
Imaging
Three-Dimensional
Mice
Mice
Inbred C57BL
Microscopy
Fluorescence
Neuroimaging
Zebrafish
super-resolution
adaptive optics
brain imaging
in vivo
synapses
Language
Abstract
Cells in the brain act as components of extended networks. Therefore, to understand neurobiological processes in a physiological context, it is essential to study them in vivo. Super-resolution microscopy has spatial resolution beyond the diffraction limit, thus promising to provide structural and functional insights that are not accessible with conventional microscopy. However, to apply it to in vivo brain imaging, we must address the challenges of 3D imaging in an optically heterogeneous tissue that is constantly in motion. We optimized image acquisition and reconstruction to combat sample motion and applied adaptive optics to correcting sample-induced optical aberrations in super-resolution structured illumination microscopy (SIM) in vivo. We imaged the brains of live zebrafish larvae and mice and observed the dynamics of dendrites and dendritic spines at nanoscale resolution.