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Table 4 Drug threshold values for GAP MCB parasites

From: A bioreactor system for the manufacture of a genetically modified Plasmodium falciparum blood stage malaria cell bank for use in a clinical trial

Anti-malarial drug

Test 1

Test 2

Test 3

Control

Test sample

Control

Test sample

Control

Test sample

3D7

W2

GAP MCB

3D7

W2

GAP MCB

3D7

W2

GAP MCB

CQ (chloroquine)

IC50 (nM)

14.85

206.8

14.37

16.53

297.6

13.77

   

95% confidence intervals (nM)

(8.489–25.98)

(131.6–325.0)

(8.671–23.80)

(9.880–27.64)

(179.3–493.9)

(8.149–23.28)

   

DHA (dihydroartemisinin)

IC50 (nM)

5.624

4.354

4.931

7.366

2.019

7.943

   

95% confidence intervals (nM)

(4.271–7.406)

(2.902–6.532)

(3.667–6.629)

(5.600–9.689)

(1.539–2.649)

(6.065–10.40)

   

PQ (piperaquine)

IC50 (nM)

18.15

46.02

15.27

30.69

48.85

23.59

   

95% confidence intervals (nM)

(10.41–31.66)

(29.78–71.11)

(8.490–27.47)

(19.33–48.72)

(34.94–68.31)

(15.29–36.39)

   

LF (lumefantrine)

IC50 (nM)

No results

70.35

No results

No results

42.32

No results

315.2

25.31

335.8

95% confidence intervals (nM)

 

(46.35–106.8)

  

(33.26–53.85)

 

(205.2–484.3)

(18.11–35.38)

(251.3–448.7)

AQM (desethylamodiaquine)

IC50 (nM)

10.19

66.83

10.35

18.46

83.88

15.55

   

95% confidence intervals (nM)

(6.031–17.21)

(40.88–109.3)

(5.551–19.31)

(10.06–33.86)

(48.10–146.3)

(9.139–26.47)

   

ATQ (atovaquone)

IC50 (nM)

0.9587

1.939

1.147

0.7122

1.524

1.216

   

95% confidence intervals (nM)

(0.8493–1.082)

(1.752–2.147)

(0.9806–1.342)

(0.6224–0.8150)

(1.304–1.781)

(1.094–1.352)

   

PD (pyronaridine)

IC50 (nM)

5.398

9.897

7.804

27.67

21.88

12.59

   

95% confidence intervals (nM)

(3.359–8.675)

(5.615–17.45)

(3.473–17.54)

(15.88–48.19)

(11.82–40.49)

(6.720–23.57)

   

MQ (mefloquine HCl)

IC50 (nM)

101.5

15.32

98.87

157

12.26

61.27

   

95% confidence intervals (nM)

(72.61–141.8)

(10.85–21.65)

(69.17–141.3)

(79.04–311.8)

(8.573–17.53)

(43.67–85.96)

   

QN (quinine HCl)

IC50 (nM)

203.2

795.6

227.4

335.6

569.6

89.73

   

95% confidence intervals (nM)

(169.9–243.0)

(527.6–1200)

(173.1–298.8)

(195.2–577.1)

(432.1–750.9)

(62.87–128.1)

   
  1. Drug threshold values are expressed as mean IC50 (95% confidence interval) in nmol/L
  2. The assay was repeated twice and reproducible results were obtained
  3. A third assay was performed for lumefantrine as IC50 values were not detectable in the first two assays