To begin, place the HBSS cell dissociation reagent EGM-2 and DMEM in a 37 degree Celsius water bath for 10 to 15 minutes. Thaw thrombin and laminin overnight at 4 degrees Celsius and fibrinogen at room temperature. Add 1.5 microliters of thrombin into a 500 microliter microcentrifuge tube.
Place a UV sterilized high-throughput plates into a desiccator for 30 minutes to remove air trapped in the microfluidics. Place the T75 flask under the microscope at 4x magnification to confirm cell confluency and transduction efficiency. Wash the cells twice with five milliliters of HBSS.
Then, add one milliliter of dissociation reagent to the flask and incubate at 37 degrees Celsius with 5%carbon dioxide for one to two minutes. Gently tap the flask using the palm and observe under the microscope that all cells have been lifted. Wash the cells with nine milliliters of appropriate media and collect suspension to a 15-milliliter conical tube.
Immediately remove a small aliquot and count the cells. Centrifuge the cell suspension at 300G and four degrees Celsius for three to five minutes. Then, remove the supernatant and resuspend the pellet in appropriate media on ice.
Using the given equation, calculate the number of cells needed. Resuspend the cells at a concentration of 1 times 10 to the 6 cells per milliliter, and calculate the volume of cells needed using the following equation. Centrifuge the required volume of cell suspension as demonstrated.
Then, in a calculated volume of fibrinogen, resuspend the pellet on ice.
