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Published TCIMAIL newest issue No.198
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For observing fluorescent protein clearly without complicated procedures
Improved TOMEI (iTOMEI) is a method that specializes TOMEI 1) for fluorescent protein observation by Prof. Sakamoto et al. This method enables simple transparency and allows for clear detection of fluorescent proteins.2,3,4)
TCI offers suitable reagents for iTOMEI.
Figure 1. Optical sections images of leaf of Arabidopsis thaliana obtained using confocal microscope.
Figure 2. Cleared Arabidopsis thaliana by "iTOMEI"
(left) Non-treatment (right) iTOMEI treatment
Products
Decoloring solution
Mounting solution
Advantages
- Enables transparency by simple osmosis in just a few days (more than 2 days).
- Keeps the fluorescence of a fluorescent protein such as GFP or tdTomato co-expressed as a reporter gene.
- Suppresses autofluorescence.
- Applicable to wide plant species including Oryza sativa, Arabidopsis thaliana, Marchantia polymorpha.
Example of use
| Preparation | [Reagents]
|
| Fixing | Fix the sample with 1% PFA/PBS for 1 hour at room temperature. *1 (Deaerate in fixative solution using vacuum pump or syringe when the sample is above ground part.) |
| Washing | Remove PBS and add the decoloring solution, then let it gently shake for 24 hours with shading at room temperature. *1 |
| Decoloring | Remove the fixation solution and add PBS, then let it rest for 5 minutes at room temperature. Repeat the same work twice. *1 |
| Washing | Remove the decoloring solution and add PBS, then let it rest for 5 minutes at room temperature. Repeat the same work twice more. |
| Staining | Remove PBS and add the staining solution, then let it rest with shading at room temperature. *2 |
| Washing | Remove the staining solution and add PBS, then let it rest for 5 minutes at room temperature. Repeat the same work twice. |
| Clearing | Remove PBS and add the mounting solution, then let it gently shake for 1 hour with shading at room temperature. *3 |
| Mounting | Mount the sample on a microscope slide with the mounting solution, seal by manicure and observe it. |
| *1 Operation time is determined by the sample size and plant type. *2 The treatment time of DAPI staining is for 30 minutes with 5 µg/mL and the treatment time of Calcofluor White staining is for 10 minutes with 1 g/L of Calcofluor White M3R and 0.5 g/L of Evans Blue, but their adjustments are needed for the purpose. *3 If you want to moderate the change in osmotic pressure, it is necessary to perform a gradual replacement with a low-concentration mounting solution. |
Plants tissue clearing protocol movie for iTOMEI reagents
Reagent enabling more rapid transparency (2 - 3 hours)
For observing only fluorescent staining dyes
- T3530
- Tissue-Clearing Reagent TOMEI [for Plants]
- *T3530 is unavailable except in Japan, U.S. and Europe.
Related Products
Related Product Category Pages
Product Brochure
References
- 1) Three-Dimensional Imaging of Plant Organs Using a Simple and Rapid Transparency Technique
- 2) TRANSPARENCY METHOD OF BIOLOGICAL SAMPLE, AND BIOLOGICAL SAMPLE DECOLORIZER
- Y. Sakamoto, S. Matsunaga, Tokyo University of Science, Jpn. Kokai Tokkyo Koho 2020-026975, 2020.
- 3) Improved clearing method contributes to deep imaging of plant organs
- 4) Whole-Tissue Three-Dimensional Imaging of Rice at Single-Cell Resolution
