Quantitative 3-D imaging of eukaryotic cells using soft X-ray tomography

Area of Science:

• Cell Biology
• Microscopy Techniques
• Biomedical Research

Background:

• Imaging is crucial in biological and biomedical research, with cell biology originating from early electron microscopy.
• Advanced light microscopy now images single molecules, but imaging whole cells in a native state remains challenging.

Purpose of the Study:

• To introduce soft X-ray tomography as a novel tool for quantitative imaging of organelle structure and distribution.
• To demonstrate its application in whole, hydrated eukaryotic cells (Schizosaccharomyces pombe).

Main Methods:

• Soft X-ray tomography was employed to image intact, hydrated eukaryotic cells.
• Cells were cryofixed immediately after transfer from their growth environment, avoiding staining or fixation protocols.
• The technique allows for rapid imaging of a large number of cells.

Main Results:

• Soft X-ray tomography provides quantitative imaging of organelle structure and distribution in whole, hydrated eukaryotic cells.
• Cells are imaged in a near-native state due to the lack of staining and fixation.
• The method allows for the analysis of statistically significant numbers of cells.

Conclusions:

• Soft X-ray tomography is a powerful new technique for studying organelle morphology in eukaryotic cells.
• Its ability to image cells in a near-native state and analyze large cell populations offers significant advantages for cell biology research.