20180212-14: COATING and TRANSFECTION ALCAM

Day 1- 2018.02.12:

  • Prepare 2 plates of 60mm of diameter with 12 coverslips of 12mm.
  • Treatment with Poly-D-Lysina (diluted 1/40 with PBS 1x)
  • Incubate for 1h (37ºC, 5% CO2).
  • Wash with PBS 1x.
  • Trypsin-EDTA a plate of HEK293.
  • For every plate of 60mm: 5ml of HEK medium + the volume that correspond to 800.000 of cells.
  • Incubate at 37ºC for 24h.

Day 2- 2018.02.13:

CONCENTRATION OF PLASMID ALCAM [ ]=0.3098 microg/microL.

*For every plate of 60mm of diameter –> 8 microg of DNA + 12 microL of Lipofectamine.

  • ALCAM: 2 plates
    • 4.96 microL of DNA in 500microL of Optimem.
    • 24 microL of Lipo in 500mL of Optimem.

– Incubate at RT for 5 min.

– Unify every DNA with the appropriate amount of Lipo and incubate at RT for 30 min.

– For every plate: 5ml of HEK medium and 500microL of every mix of DNA and Lipo.

– Incubate O/N at 37ºC.

Day 3- 2018.02.07:

  • Fix with PFA 4%. Incubation at RT during 10min.
  • Wash with PBS 1x.
  • Permeation with triton 0.3%:
    • TWO CONDITIONS: PERMEATED-CELLS (Triton 0.3%) AND NON-PERMEATED CELLS (without this step)
  • Wash with PBS 1x.
  • Blocking solution -> 5% goat serum in PBS for 1h at RT.
  • Remove the blocking solution and freeze at -80ºC.

Day 4 – 2018.02.08: Check the ALCAM transfection – ICC:

  • Blocking solution: 5% goat serum in PBS
  • Primary antibody: Mouse cmyc diluted 1/200
  • Secondary antibody: GAM 488 + GAH594 IgG diluted 1/1000
  • Vectashield mounting medium

Results: The samples were well transfected; althought a lot of cells were not transfected (maybe a problem in the time of the coating; because we leave the plates with the coating more hours). We are going to use the non-permeated cells.

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