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Chen W, Tsissios G, Sallese A, Smucker B, Nguyen AT, Chen J, Wang H, Del Rio-Tsonis K. In Vivo Imaging of Newt Lens Regeneration: Novel Insights Into the Regeneration Process. Transl Vis Sci Technol 2021; 10:4. [PMID: 34383878 PMCID: PMC8362625 DOI: 10.1167/tvst.10.10.4] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Purpose To establish optical coherence tomography (OCT) as an in vivo imaging modality for investigating the process of newt lens regeneration. Methods Spectral-domain OCT was employed for in vivo imaging of the newt lens regeneration process. A total of 37 newts were lentectomized and followed by OCT imaging over the course of 60 to 80 days. Histological images were obtained at several time points to compare with the corresponding OCT images. Volume measurements were also acquired. Results OCT can identify the key features observed in corresponding histological images based on the scattering differences from various eye tissues, such as the cornea, intact and regenerated lens, and the iris. Lens volume measurements from three-dimensional OCT images showed that the regenerating lens size increased linearly until 60 days post-lentectomy. Conclusions Using OCT imaging, we were able to track the entire process of newt lens regeneration in vivo for the first time. Three-dimensional OCT images allowed us to volumetrically quantify and visualize the dynamic spatial relationships between tissues during the regeneration process. Our results establish OCT as anin vivo imaging modality to track/analyze the entire lens regeneration process from the same animal. Translational Relevance Lens regeneration in newts represents a unique example of vertebrate tissue plasticity. Investigating the cellular and morphological events that govern this extraordinary process in vivo will advance our understanding and shed light on developing new therapies to treat blinding disorders in higher vertebrates.
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Affiliation(s)
- Weihao Chen
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
| | - Georgios Tsissios
- Department of Biology Miami University, Oxford, OH, USA.,Center for Visual Sciences at Miami University, Oxford, OH, USA.,Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
| | - Anthony Sallese
- Department of Biology Miami University, Oxford, OH, USA.,Center for Visual Sciences at Miami University, Oxford, OH, USA
| | - Byran Smucker
- Center for Visual Sciences at Miami University, Oxford, OH, USA.,Department of Statistics, Miami University, Oxford, OH, USA
| | - Anh-Thu Nguyen
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA
| | - Junfan Chen
- Department of Chemistry and Biochemistry, Miami University, Oxford OH, USA
| | - Hui Wang
- Department of Chemical, Paper and Biomedical Engineering, Miami University, Oxford, OH, USA.,Center for Visual Sciences at Miami University, Oxford, OH, USA
| | - Katia Del Rio-Tsonis
- Department of Biology Miami University, Oxford, OH, USA.,Center for Visual Sciences at Miami University, Oxford, OH, USA.,Cellular Molecular and Structural Biology Program, Miami University, Oxford, OH, USA
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