Shreffler:Milk Program

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#Lyons pmid=8176234
#Lyons pmid=8176234
#Fuss pmid=19347849

Revision as of 15:36, 27 July 2009



CFSE is used to fluorescently label live cells in order to track them. 5,6-CFDA/SE is membrane permeable, but trapped in the cell when converted by intracellular esterases. CFSE is equally partitioned to daughter cells during division and can be used to measure cell proliferation.

T regulatory Assay


  • 15 mL polypropylene tubes
  • PBS
  • 5,6-CFDA/SE Invitrogen C1157 dissolved in DMSO at 5 mM and stored at -20°C.


Isolation of Mononuclear Cells

CFSE labelling of 7day culture cells

  1. Suspend PBMCs at 10x106 cells/mL in PBS alone.
  2. Ensure that cells are uniformly suspended when CFSE is added.
  3. If CFSE negative control is needed, remove cells now.
  4. Make '2X' concentration (10 μM) in PBS
    • For example: add 5 mL PBS + 10 μL 5 mM CFSE
  5. Combine 1:1 PBMC cells + CFSE (e.g. 5 mL PBMCs + 5 mL CFSE) in 15mL tube and mix completely.
  6. Place in 37°C H2O bath x 10 min.
  7. Wash in 10 mL complete medium.
  8. Resuspend in medium at desired density


discuss this protocol


  1. Lyons AB and Parish CR. . pmid:8176234. PubMed HubMed [Lyons]
  2. Fuss IJ, Kanof ME, Smith PD, and Zola H. . pmid:19347849. PubMed HubMed [Fuss]
All Medline abstracts: PubMed HubMed


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