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Table 2 Effects of rhIL-2, rhIL-15 and IL-15/SuIL-15Rα-IgG4 Fc complexes on NK cell phenotypic markers

From: Development of IL-15/IL-15Rα sushi domain-IgG4 Fc complexes in Pichia pastoris with potent activities and prolonged half-lives

Marker

Ctrl

rhIL-2

rhIL-15

dFc

mFc

CD69

5.8 ± 3.0

28.3 ± 13.9

81.4 ± 18.6

85.4 ± 11.8

78.6 ± 22.0

CD25

2.9 ± 0.6

3.5 ± 0.5

24.0 ± 8.6

24.6 ± 7.8

22.7 ± 8.2

CD94

65.6 ± 29.0

73.4 ± 22.2

86.2 ± 10.6

84.8 ± 12.1

85.2 ± 11.6

NKG2D

75.6 ± 12.8

91.6 ± 5.4

96.1 ± 2.0

95.6 ± 2.7

95.7 ± 2.5

NKp44

2.3 ± 0.6

5.0 ± 1.5

9.2 ± 3.8

12.0 ± 3.6

8.9 ± 3.4

CD107a

6.4 ± 2.1

11.2 ± 6.4

20.3 ± 9.7

21.7 ± 12.0

21.2 ± 7.9

IFN-γ

1.4 ± 0.5

2.1 ± 0.7

10.0 ± 2.7

10.8 ± 2.1

11.7 ± 3.8

TRAIL

20.0 ± 14.8

34.0 ± 13.4

60.1 ± 17.1

62.7 ± 15.4

60.8 ± 18.1

4-1BB

2.3 ± 0.9

6.2 ± 3.6

15.3 ± 6.9

16.9 ± 7.8

15.0 ± 7.6

Granzyme B

89.7 ± 4.4

96.3 ± 1.6

98.8 ± 0.8

98.9 ± 0.8

98.8 ± 0.9

Ki67

4.9 ± 1.7

7.3 ± 2.5

16.2 ± 2.6

16.6 ± 2.8

16.0 ± 2.2

Tim-3

9.0 ± 4.8

33.5 ± 11.7

57.1 ± 13.7

58.4 ± 15.4

55.4 ± 15.7

TIGIT

29.3 ± 2.8

40.0 ± 5.9

55.4 ± 11.0

56.0 ± 7.9

55.7 ± 10.5

  1. Human PBMCs from healthy donors (n = 5) were cultured for 24 h in the absence or presence of 50 IU/mL rhIL-2, 10 ng/mL rhIL-15 or 35.7 ng/mL IL-15/SuIL-15Rα-IgG4 Fc complexes, and the expression of selected markers on NK cells was analyzed by flow cytometry. The percentages of NK cells that expressed the corresponding markers are listed in the table. dFc: IL-15/SuIL-15Rα-dFc; mFc: IL-15/SuIL-15Rα-mFc