Tutorial: practical considerations for tissue clearing and imaging.

Area of Science:

• Biological imaging
• Biotechnology
• Microscopy

Background:

• Tissue clearing enables 3D anatomical and morphological studies from whole organisms to subcellular levels.
• Numerous tissue clearing methods and imaging techniques exist, creating challenges for researchers.
• No single protocol suits all tissue types or experimental questions, necessitating optimization.

Purpose of the Study:

• To provide guidelines for designing, optimizing, and imaging successful tissue-clearing experiments.
• To address common pitfalls in tissue clearing and volumetric imaging.
• To focus on optimizing protocols for light-sheet fluorescence microscopy (LSFM).

Main Methods:

• The tutorial focuses on practical considerations rather than a direct comparison of clearing methods.
• It emphasizes factors like signal retention, staining, transparency uniformity, and image acquisition.
• Guidelines are provided for sample preparation and post-imaging data evaluation.

Main Results:

• Successful tissue clearing requires careful consideration of protocol, tissue type, staining, and imaging modality.
• Optimization is often necessary due to the lack of a universal clearing approach.
• The tutorial aims to reduce trial-and-error for researchers.

Conclusions:

• Selecting and optimizing tissue clearing protocols is crucial for effective 3D biological imaging.
• Understanding key factors like signal retention and imaging parameters improves experimental outcomes.
• This guide assists researchers in achieving successful tissue clearing and LSFM imaging.