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Table 1 Expansion of T-cells in the Quantum system

From: Large-scale expansion and characterization of CD3+ T-cells in the Quantum® Cell Expansion System

Donor

PBMCs seeded (×106)

CD3+ T-cells seeded (%)

Total cells harvested (×109)

Viability (%)

CD3+ T-cells harvested (%)

CD3+ T- cell fold-expansion

CD3+ T-cell doubling time (h)

CD3+ T-cells population doublings

Cell culture concentration at harvest (×106 cells/mL)a

1

30

36.9

14.9

91.9

94.2

1268

20.7

10.3

120

2

46.6

13.9

92.5

96.1

956

21.6

9.9

112

3

55.0

16.1

93.8

97.5

951

21.6

9.9

130

4

32.5

16.2

94.0

96.0

1595

20.1

10.6

131

5

23.6

13.1

92.5

96.6

1787

19.8

10.8

106

Mean

 

38.9

14.8

93.7

96.1

1311

20.7

10.3

120

SD

12.2

1.3

2.0

1.2

376

0.8

0.4

11

% CV

31.4

9.1

2.1

1.3

29

4.0

4.1

9.1

1

85

36.9

27.8

91.0

91.9

815

19.6

9.7

224

2

46.6

24.6

92.0

94.3

586

20.6

9.2

198

3

55.0

26.9

94.0

94.3

543

20.3

9.1

217

4

32.5

23.5

93.0

92.7

789

19.2

9.6

190

5

23.6

22.9

90.3

94.5

1079

18.8

10.1

185

Mean

 

38.9

25.1

92.1

93.5

762

19.9

9.5

203

SD

12.2

2.1

1.5

1.2

214

0.8

0.4

17

% CV

31.4

8.5

1.6

1.3

28

4.2

4.1

8.5

  1. Fold expansion, doubling times and population doublings were calculated as described in “Materials and methods
  2. aTotal cell concentration at harvest was calculated from the total cells harvested and the volume within the fibers of the bioreactor (124 mL)