User:Karmella Haynes/Notebook/PcTF Genomics/2014/09/24: Difference between revisions
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* | * Transduction Day 2: change media | ||
---- | ---- | ||
''' | '''Transduction Day 2'''<br> | ||
> | * Brought 25 mL aliquots of media for each cell line to the LaBaer lab. | ||
* Checked GFP control wells (LaBaer scope has no RFP filters) | |||
** Plate 1: U2OS, ~90% GFP expression, at least ~two doubling | |||
** Plate 2: SK-N-SH, ~90% expression, slow cell growth | |||
** Plate 4: K562, <font color="red">no GFP expression. Did not continue next steps for this plate</font> | |||
* Remove media | |||
* Add 2 ml/well fresh media with 1% Pen/strep | |||
* Grow cells at 37°C (overnight) | |||
-- | Technical hint from Research Gate | ||
* In our lab, we concentrate our lentivirus after production using PEG-precipitation. This increases the concentration 50-100x. '''Then, we "spinoculate" K562 cells with a small amount of virus in an eppendorf tube. Typically, this means putting 50,000 - 100,000 K562 cells in an eppendorf tube, adding 1-2 uL of lentivirus, adding polybrene to 4 ug/ml, and centrifuging for 30 min at 800 x g (at 32 C or room temperature).''' If your lentivirus is of good quality, this method gives very high infection rate (normally I get greater than 90%...close to 100). | |||
** Mark Duncan, Northwestern U. | |||
Trouble-shooting. Maybe try this | |||
* Put 80k/1 mL K562 cells + Polybrene + 0.4 mL viral aliquot into 15 mL conicals | |||
* Spin, according to Ganzalez protocol (9/23/14) | |||
* Resuspend and plate total volume in 6-well plate | |||
Revision as of 07:16, 28 September 2014
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09/24/14
Transduction Day 2
Trouble-shooting. Maybe try this
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