Application of ethyl cinnamate based optical tissue clearing and expansion microscopy combined with retrograde perfusion for 3D lung imaging
3 D imaging of the lung is not a trivial undertaking as during preparation the lung may collapse. Also serial sections and scans followed by 3 D reconstruction may lead to artifacts. The present study aims to figure out the best way to perform 3 D imaging in lung research. We applied an optical tiss...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
12 Oct 2020
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| In: |
Experimental lung research
Year: 2020, Volume: 46, Issue: 10, Pages: 393-408 |
| ISSN: | 1521-0499 |
| DOI: | 10.1080/01902148.2020.1829183 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1080/01902148.2020.1829183 Verlag, lizenzpflichtig, Volltext: https://www.tandfonline.com/doi/full/10.1080/01902148.2020.1829183 
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| Author Notes: | Quanchao Sun, Tiziana Picascia, Arif ul Maula Khan, Cinzia Brenna, Vincent Heuveline, Anja Schmaus, Jonathan P. Sleeman and Norbert Gretz |
| Summary: | 3 D imaging of the lung is not a trivial undertaking as during preparation the lung may collapse. Also serial sections and scans followed by 3 D reconstruction may lead to artifacts. The present study aims to figure out the best way to perform 3 D imaging in lung research. We applied an optical tissue clearing (OTC) method, which uses ethyl cinnamate (ECi) as a fast, nontoxic and cheap clearing solvent, for 3 D imaging of retrograde perfused lungs by laser confocal fluorescence microscopy and light sheet fluorescence microscopy. We also introduced expansion microscopy (ExM), a cutting-edge technique, in 3 D imaging of lungs. We examined and compared the usefulness of these techniques for 3 D lung imaging. The ExM protocol was further extended to paraffin-embedded lung metastases blocks. The MHI148-PEI labeled lung vasculature was visualized by retrograde perfusion combined with trachea ligation and ECi based OTC. As compared with trans-cardiac perfusion, the retrograde perfusion results in a better maintenance of lung morphology. 3 D structure of alveoli, vascular branches and cilia in lung were revealed by immunofluorescence staining after ExM. 3 D distribution of microvasculature and neutrophil cells in 10 years old paraffin-embedded lung metastases were analyzed by ExM. The retrograde perfusion combined with trachea ligation technique could be applied in the lung research in mice. 3 D structure of lung vasculature can be visualized by MHI148-PEI perfusion and ECi based OTC in an efficient way. ExM and immunofluorescence staining protocol is highly recommended to perform 3 D imaging of fresh fixed lung as well as paraffin-embedded lung blocks. |
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| Item Description: | Gesehen am 27.01.2025 |
| Physical Description: | Online Resource |
| ISSN: | 1521-0499 |
| DOI: | 10.1080/01902148.2020.1829183 |