VIVIT: Resolving trans-scale volumetric biological architectures via ionic glassy tissue.

Area of Science:

• Neuroscience
• Biotechnology
• Histology

Background:

• Preserving large biological structures for high-resolution 3D imaging is challenging.
• Existing histological methods struggle with maintaining structural integrity and clarity.

Purpose of the Study:

• Introduce a novel 3D histology method, VIVIT.
• Enable high-resolution, distortion-free imaging of trans-scale biostructures.
• Facilitate detailed mapping of neural circuits.

Main Methods:

• VIVIT utilizes ionic liquids to create a glassy state in biological tissue.
• This process allows for optical clearing, enhanced transparency, and preservation from ice crystal damage.
• It also amplifies fluorescent signals for improved visualization.

Main Results:

• VIVIT achieved high-resolution, distortion-free 3D imaging of biological tissues.
• Demonstrated the link between synaptic input modality and neuronal output targets in multisensory thalamic neurons.
• Revealed aspects of inhibitory control within the human cortex.

Conclusions:

• VIVIT is a powerful new tool for studying complex biological structures across scales.
• It offers unprecedented opportunities to understand neural circuit organization and function.
• This method advances the field of 3D histology and neuroanatomy.