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Cell Explorer™ Live Cell Tracking Kit *Blue Fluorescence*

Our Cell Explorer™ fluorescence imaging kits are a set of tools for labeling cells for fluorescence microscopic investigations of cellular functions. The effective labeling of cells provides a powerful method for studying cellular events in a spatial and temporal context. This particular kit is designed to uniformly label live cells in blue fluorescence for the studies that require the fluorescent tag molecules retained inside cells for relatively longer time. The kit uses a weakly fluorescent dye that carries a cell-retaining moiety. The dye becomes strongly fluorescent upon entering into live cells, and trapped inside live cells to give a stable fluorescence signal for relatively long time. The dye is a hydrophobic compound that easily permeates intact live cells. The labeling process is robust, requiring minimal hands-on time. It can be readily adapted for a wide variety of fluorescence platforms such as microplate assays, immunocytochemistry and flow cytometry. It is useful for a variety of studies, including cell adhesion, chemotaxis, multidrug resistance, cell viability, apoptosis and cytotoxicity. The kit provides all the essential components with an optimized cell-labeling protocol.

Example protocol

AT A GLANCE

Protocol Summary
  1. Prepare samples
  2. Add 1X Track It™ Blue working solution (100 µL/well)
  3. Stain the cells at 37°C for 15 to 60 minutes
  4. Wash the cells
  5. Examine the specimen under fluorescence microscope with DAPI filter or flow cytometer with 450/40 nm filter (Pacific Blue channel) 
Important      Thaw all the components at room temperature before opening.

CELL PREPARATION

For guidelines on cell sample preparation, please visit https://www.aatbio.com/resources/guides/cell-sample-preparation.html

PREPARATION OF STOCK SOLUTIONS

Unless otherwise noted, all unused stock solutions should be divided into single-use aliquots and stored at -20 °C after preparation. Avoid repeated freeze-thaw cycles.

Track It™ Blue stock solution (2 mM)
Add 25 µL of DMSO (Component B) into one vial of Track It™ Blue (Component A) and mix well to make 2 mM Track It™ Blue stock solution.

PREPARATION OF WORKING SOLUTION

Track It™ Blue working solution
Dilute 2 mM Track It™ Blue stock solution into Assay Buffer (Component C) to make 5 to 50 μM Track It™ Blue working solution.
Note     This Track It™ Blue working solution should be prepared enough for all the wells at 100 μL/well with the appropriate concentration. For example, to get Track It™ Blue at the final concentration of 20 μM for one 96-well microplate, dilute 10 μL of the Track It™ Blue stock solution into 1 mL of Assay Buffer (Component C) to make 1 mL of 20 μM (1X) Track It™ Blue working solution.
Note     The final concentration of the Track It™ Blue should be empirically determined for different cell types and/or experimental conditions. It is recommended to test at the concentrations that are at least over a ten fold range.
Note     We found that 2 µM final in well concentration is sufficient for most of cell lines.

SAMPLE EXPERIMENTAL PROTOCOL

  1. Remove Growth medium, wash cells with PBS once.
  2. Add 100 µL Track It™ Blue working solution (1X) to each well.
  3. Incubate the cells in a 37°C, 5% CO2 incubator for 15 to 60 minutes.
  4. Wash cells with Hanks and 20 mM Hepes buffer (HHBS) or an appropriate buffer.
  5. Fill the cell wells with Assay Buffer or  an appropriate buffer.
  6. Analyze the cells using a fluorescence microscope with DAPI filter or flow cytometer with 450/40 nm filter (Pacific Blue channel). 

Citations

View all 3 citations: Citation Explorer
Autophagy proteins are not universally required for phagosome maturation
Authors: Cemma, Marija and Grinstein, Sergio and Brumell, John H
Journal: Autophagy (2016): 1440--1446
Differential detection of tumor cells using a combination of cell rolling, multivalent binding, and multiple antibodies
Authors: Myung, Ja Hye and Gajjar, Khyati A and Chen, Jihua and Molokie, Robert E and Hong, Seungpyo
Journal: Analytical chemistry (2014): 6088--6094
Versatile fabrication of nanoscale sol--gel bioactive glass particles for efficient bone tissue regeneration
Authors: Lei, Bo and Chen, Xiaofeng and Han, Xue and Zhou, Jiaan
Journal: Journal of Materials Chemistry (2012): 16906--16913

References

View all 26 references: Citation Explorer
Requirements, features, and performance of high content screening platforms
Authors: Gough AH, Johnston PA.
Journal: Methods Mol Biol (2007): 41
A pharmaceutical company user's perspective on the potential of high content screening in drug discovery
Authors: Hoffman AF, Garippa RJ.
Journal: Methods Mol Biol (2007): 19
Optimizing the integration of immunoreagents and fluorescent probes for multiplexed high content screening assays
Authors: Giuliano KA., undefined
Journal: Methods Mol Biol (2007): 189
Past, present, and future of high content screening and the field of cellomics
Authors: Taylor DL., undefined
Journal: Methods Mol Biol (2007): 3
Novel fluorescent proteins for high-content screening
Authors: Wolff M, Wiedenmann J, Nienhaus GU, Valler M, Heilker R.
Journal: Drug Discov Today (2006): 1054
Page updated on October 4, 2024

Ordering information

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Unit size
Catalog Number22620
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Additional ordering information

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Storage, safety and handling

Certificate of OriginDownload PDF
H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
UNSPSC12352200

Platform

Flow cytometer

Excitation350 nm or 405 nm laser
Emission450, 40 nm filter
Instrument specification(s)Pacific Blue channel

Fluorescence microscope

ExcitationDAPI filter
EmissionDAPI filter
Recommended plateBlack wall, clear bottom

Components

Image of HeLa cells stained with Cell Explorer™ Live Cell Tracking Kit (Cat#22620) in a Costar black wall/clear bottom 96-well plate. Cells were stained with Track It™ Blue for 15 minutes and image was aquired with fluorescence microscope using DAPI filter.
Image of HeLa cells stained with Cell Explorer™ Live Cell Tracking Kit (Cat#22620) in a Costar black wall/clear bottom 96-well plate. Cells were stained with Track It™ Blue for 15 minutes and image was aquired with fluorescence microscope using DAPI filter.
Image of HeLa cells stained with Cell Explorer™ Live Cell Tracking Kit (Cat#22620) in a Costar black wall/clear bottom 96-well plate. Cells were stained with Track It™ Blue for 15 minutes and image was aquired with fluorescence microscope using DAPI filter.