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NIAID's Antimicrobial Acquisition and
Coordinating Facility AACF |
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Submission Info Screening Assays |
SARS CoV (Corona Viruses) Assays
Hi/Lo Assay
(Southern Research Institute)
SARS Hi-Lo Assay Protocol NOTES · Cells are received in the morning, plated, and incubated overnight. · Batch size consists of 15 plates. 15 plates will be plated in the morning. · Drug additions are made to the cells the day after plating (4 plates at a time · All conditions must be kept sterile. · White clear-bottom plates are used for CellTiter Glo luminescence reads. · Black clear bottom plates are used for ATPlight luminescence reads.
REQUIRED MATERIALS/EQUIPMENT A. Equipment
B. Consumables
C. Materials
1. Reagents 1.1. P/S · Make 5.5 ml aliquots in sterilized eppie tubes, store at –20 C. · Yield: 20x 5ml aliquots of P/S
1.2 L-Glutamine
· Make 5.5 ml aliquots in sterilized eppie tubes, store at –20 C. · Yield: 20x 5ml aliquots of L-Glut
1.3 FBS
· FBS from Cell Biology should be heat inactivated for 30 min. · Make 50ml aliquots in sterilized eppie tubes, store at -20 C. · Yield: 10x 50ml aliquots of FBS
1.4 Media
Assay Medium: IMEM, 5%FBS, L-glut, antibiotics (w/o phenol red)
25ml Fetal Bovine Serum (Atlanta Biologicals Cat#S12450, Lot#B0053) Heat inactivated @ 56C for 30min. 5ml L-glutamine, 200mM [final conc. 2mM] (GibcoBRL Cat#25030-081, Lot31160728) 5ml Penicillin-streptomycin solution containing 1x104 U/ml penicillin and 1x104 ug/ml streptomycin [final conc. 100 U/ml penicillin and 100 ug/ml streptomycin] (GibcoBRL Cat#15140-122, lot#1174381) 500 ml DMEM; w/glutamine, w/o phenol red, gentamycin, proline (Cellgro; Cat#, Lot#)
1.5 CellTiter-Glo (See Promega for Complete Instructions) · Equilibrate Glo Buffer and Glo Substrate to room temperature prior to mixing. · Glo substrate is found in –20 C floor freezer · Glo buffer is found in the 4 C walk-in cooler · For the smaller Glo substrate bottles (size A), transfer 10 ml of Glo Buffer into the amber bottle containing the substrate. · For the larger Glo substrate bottles (size B), transfer 100 ml of Glo Buffer into the amber bottle containing the substrate. · Recap with rubber cap and mix gently, inverting ~10-20 times to dissolve all the substrate. · Transfer the solution into a sterile graduated cylinder.
1.6 1% DMSO in media (for validation; 1 drug plate is enough for 9 cell plates) · Add 19.8 ml of sterile dH2O into a 125 ml flask. · Add 0.2 ml of DMSO. · Pour into a sterile reservoir. · Aliquot 200 ul/well into a sterile 96 V bottom plate, columns 1-11. · In a separate sterile 96 well V bottom plate aliquot 200 ul/well into column 12 only.
Table 1: 96-well Z-plate format
Table 2: 96-well plate format
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