Sack: Cell Harvesting for Electrophysiology

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Sack and Yarov-Yarovoy Labs

Department of Physiology and Membrane Biology
University of California, Davis

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Cell Harvesting for Electrophysiology
Ken Eum July 18, 2012 (edit)

Notes: Steps should be done (not necessary if cell stock is only being used for harvesting cells for electrophysiology) inside of a Biological Safety Cabinet in Sterile conditions.

Procedures (in 35mm dish):

  1. Check under microscope to make sure that cells are ~80% confluent
  2. Carefully remove (aspirate) the solution from the 35mm dish containing the cells
  3. Rinse with Versene ~ 2 mL
  4. Remove (aspirate) the Versene solution
  5. Add 2 mL of Versene to detach cells
  6. Wait ~1-2 minutes and scrape off cells with a cell scraper
  7. Transfer the suspended cells into a 15mL conical tube
  8. Add 3mL of CHO-SFM – II + 25mM HEPES + 1% Pen/Strep into the 15mL conical tube with the suspended cells.
  9. Spin at 500rcf for 2 minutes
  10. Aspirate out the supernatant
  11. Resuspend with 2mL of CHO-SFM-II + 25mM HEPES
  12. Transfer the suspended cells into a 2mL tube
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