LaCava Research Wiki

Initiated September 2017

Establishing ORF1 as baseline for N2102EP and HEK293T in Milo

Mehrnoosh5th August 2020 at 12:57pm

We expect to see ORF1 in every well that BTUB is observed

Cell line: N2102EP / 2A6 & HEK293 Flip-In Trex ~ at least 150 k

We validated our old secondary antibody using fluorescent Westernblot as explained here:

Validating fluorescent antibody using Westernblot and QuantLAS4000

Experiment design:

First round:

AntibodySupplier #OrganismDetection channelFinal TargetStorageStock (mg/ml)Final (mg/ml)!Vol from Stock (ul)Final volume (ul)
PrimaryNovus #NB600-936Rabbit-Beta-tubulinl-2010.1880
SecondaryNovus #NL004Donkey557Rabbit IgG410.1880

Second round:

AntibodySupplier #OrganismDetection channelFinal TargetStorageStock (mg/ml)Final (mg/ml)!Vol from Stock (ul)Final volume (ul)
PrimaryAbmart #5130 MilliporeMouse-ORFpl420.1480
SecondaryNovus #NL008Donkey637Mouse IgG410.1880

Protocol:

  1. Hydrate the chip for 10 mins
  2. Add 1mL of cell with suspension buffer on chip and let the cell settle for almost 10 mins. Checking chip under microscope for 15-20% occupancy
  3. Wash the unsettle cells with suspension buffer
  4. Pipette 300u L lysis/run buffer on one end of electrophoresis cell
  5. Place the chip side up in Milo and run the Milo with the recommended setting. Pour the remaining lysis/run buffer.
TYPICAL MILO SETTINGVALUE#
Lysis time10 seconds
Electrophoresis run time1 minute
Electrophoresis voltage240 V
UV exposure times4 minutes
  1. Remove the chip and wash in wash buffer for 2x10 mins
  2. Prepare first primary. Dilute 1:10.
  3. Remove the chip from wash buffer and tab it slightly, then place in spinner for 3 seconds
  4. Place the chip down on the antibody probing chamber. Incubate the chips with primary antibody for 2 hrs @RT.
  5. Wash 3x10 with wash buffer on shaker.
  6. Prepare first secondary antibody. Dilute secondary antibody 1:10.
  7. Remove the chip from the wash buffer and tab it slightly, then place in spinner for 3 seconds.
  8. Place the chip down on the antibody probing chamber. Incubate the chips with secondary antibody for 1 hr @RT.
  9. Wash 3x15 with wash buffer on shaker.
  10. Rinse the chip 3 times with DI water and remove the wash buffer and spin it for 3 minutes.
  11. Scan the chip
  12. Wash the chip 3x15 in wash buffer and repeat the steps from 5 to 16 with the second set of antibodies