TransPass D1 Protocol 2: Transfection in the absence of serum


The amounts below are given for a 12-well plate format. Use Table 2 to adjust the reagent volumes for other plate sizes.


  1. Plate cells so they reach a confluence of 60-90% at the time of transfection.
  2. For each transfection well, add 1.5 µg of plasmid DNA into 0.6 ml serum-free high glucose DMEM in a microcentrifuge tube.
  3. Vortex TransPass D1 Transfection Reagent tube just before pipetting.
  4. Add 1.5-3 µl TransPass D1 Transfection Reagent per tube and mix well by flicking the tube. Incubate at room temperature for 20-30 minutes to form the transfection complexes.
  5. Wash cells once with serum-free medium.
  6. Aspirate the culture medium from the cells and immediately replace with the transfection mixture. Rock the plate gently in order to evenly disperse the complex mixture.
  7. Return the plate to the incubator and incubate cells for 2-3 hours.
  8. Replace transfection medium with complete growth medium containing serum and incubate for 24-72 hours before assaying.
  9. Replace medium 24 hours post-transfection or as needed to maintain healthy cells.