NIAID's Antimicrobial Acquisition and Coordinating Facility
AACF
 

AACF Home

Submission Info
Screening Agreement
Compound Submission Form

Screening Assays
-Biodefense Virus Panel
-BK Virus
-Hepatitis B Virus
-Hepatitis C Virus
-Herpesviruses

-Human Papilloma Virus
-Orthopoxviruses
-Respiratory Virus Panel
-SARS CoV

Data Interpretation
Medicinal Chemistry

Contact Info

SARS CoV (Corona Viruses) Assays

C. Jonsson, Ph.D and M. Murray, Ph.D., Southern Research Institute
D. Smee, Ph.D., Utah State University

Hi/Lo Assay                   (Southern Research Institute)
Dose Response Assay    (Southern Research Institute)
CPE Assay                        (Utah State University)

 

SARS Hi-Lo Assay Protocol
(Southern Research Institute, C. Jonsson, M. Murray)

 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

  • Titertek Multidrop 384 with stacker unit; under sterile hood
  • 2 Multidrop cassette heads, sterile
  • Biomek FX with carousel; under sterile hood
  • Sorvall RT7 Centrifuge
  • Drummond Pipettor
  • Sterile tissue culture hood
  • 3-M ORCA rail system (with Multidrop, WallacVictor, Lid Station, and Barcode Reader)
  • Magnetic stir bars, small
  • Stir plate
  • 37o C 5% CO2 Incubator
  • 37o C Water Bath
  • Timer

 

B.  Consumables

  • 5, 10, 25, & 50 mL sterile disposable pipets
  • 96-well Black and white tissue culture treated plates with barcodes
  • 96-well V-bottom plates
  • Corning 50 mL sterile centrifuge tubes
  • Biomek P20 tips for FX (9 boxes/9 plates)
  • Foil Plate Sealers
  • 125- or 250-mL sterile disposable flasks, x2
  • Disposable graduated cylinder
  • Eppendorf tubes, sterile
  • Gloves, Purple Nitrile
  • Kimwipes, small
  • Sterile disposable reservoirs
  • Aluminum foil

 

C.  Materials

  • 70% Ethanol
  • Distilled water (dH2O)
  • Sterile water (filtered and autoclaved dH2O)
  • Project notebook

 

 

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

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Media

only

Media

Only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

Only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

Only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

Media

only

Media

only

Media

only

Media

only

Media

Only

Media

only

Virus

Virus

Virus

Virus

Virus

Virus

 

 

 

Table 2:   96-well plate format

 

1

2

3

4

5

6

7

8

9

10

11

12

 

A

1

9

17

25

33

41

49

57

65

73

81

media

 

B

2

10

18

26

34

42

50

58

66

74

82

cell

 

C

3

11

19

27

35

43

51

59

67

75

83

cell

 

D

4

12

20

28

36

44

52

60

68

76

84

virus

 

E

5

13

21

29

37

45

53

61

69

77

85

virus

 

F

6

14

22

30

38

46

54

62

70

78

86

positive

 

G

7

15

23

31

39

47

55

63

71

79

87

positive

 

H

8

16

24

32

40

48

56

64

72

80

88

media

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

test at 10 uM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

positive control is 6684 at 10 uM