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Table 1 Effect of transfection conditions on transfection efficiency, cumulative rFVIII production, and cell specific rFVIII production (qFVIII) rate by transient transfection of HEK293 suspension cultures

From: Transient transfection of serum-free suspension HEK 293 cell culture for efficient production of human rFVIII

Condition

Transfection efficiency (%)

*Cumulative active rFVIII production (IU)

qFVIII

(ng FVIII/106 cell.h)

0.4 μg DNA/10 6 cel

51.1

25.4

0.24

0.6 μg DNA/10 6 cel

50.0

35.1

0.30

0.8 μg DNA/10 6 cel

55.9

29.6

0.21

0.4 μg DNA/10 6 cel

37°C Repeated Transfection

57.3

21.9

0.43

0.4 μg DNA/10 6 cel

34°C Repeated Transfection

52.8

49.3

0.58

  1. The transfections were done using the PEI:DNA ratio of 2:1. *rFVIII cumulative production in IU was calculated using biological activity results.