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Dinuclear osmium(II) probes for high-resolution visualisation of cellular DNA structure using electron microscopy
Ashley Wragg1, Martin R Gill, Christopher J Hill
1Department of Chemistry, University of Sheffield, Sheffield, S3 7HF UK. james.thomas@sheffield.ac.uk.
Chemical Communications (Cambridge, England)
|September 9, 2014
Summary
Two dinuclear osmium polypyridyl complexes serve as effective transmission electron microscopy (TEM) contrast agents. They enable detailed visualization of intracellular structures, especially within the nucleus.
Area of Science:
- Inorganic Chemistry
- Cell Biology
- Microscopy
Background:
- Transmission electron microscopy (TEM) requires contrast agents for visualizing cellular ultrastructure.
- Osmium polypyridyl complexes offer potential as novel imaging agents.
Purpose of the Study:
- To evaluate dinuclear osmium polypyridyl complexes as TEM contrast agents.
- To assess their efficacy in high-resolution imaging of intracellular structures.
Main Methods:
- Synthesis and characterization of two dinuclear osmium polypyridyl complexes.
- Application of complexes as contrast agents in TEM.
- Microscopic analysis of cellular ultrastructure, focusing on sub-nuclear detail.
Main Results:
- The dinuclear osmium polypyridyl complexes functioned effectively as TEM contrast agents.
- High-resolution visualization of intracellular structures was achieved.
- Exceptional detail in sub-nuclear regions was observed.
Conclusions:
- Dinuclear osmium polypyridyl complexes are convenient and easy-to-handle TEM contrast agents.
- These complexes facilitate high-resolution imaging of cellular and sub-nuclear structures.
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