Review Article

Utilizing Cytokines to Function-Enable Human NK Cells for the Immunotherapy of Cancer

Table 1

Cytokine receptors on human NK cells.

ReceptorComponentsNK subset SignalingFunctionsSource

IL-2RIL-2R
IL-2/15R
IL-2R : CD56bright
IL-2R : CD56bright and CD56dim
Jak1/3, STAT3/5 
PI3K 
Ras/Raf/MAPK
Cytokine production 
Proliferation 
Survival 
Enhanced cytotoxicity
T cell

IL-12RIL-12Rb1 
IL-12Rb2
CD56bright and CD56dimJak2/Tyk2 and 
STAT4
Cytokine production 
Enhanced cytotoxicity
DC 
M

IL-15RIL-15R
IL-2/15R
CD56bright and CD56dimJak1/3 and STAT3/5 
PI3K 
Ras/Raf/MAPK
Cytokine production 
Proliferation 
Survival 
Enhanced cytotoxicity
DC 
M
BM stroma

IL-18RIL-18R /R1 
IL-18R /RAP
CD56bright and CD56dimMyD88, IRAK4/TRAF6, 
MAPK, and NFkB
Cytokine production 
Proliferation
DC 
M

IL-21RIL-21R 
CD56bright and CD56dimJak1/3 and STAT1/3/5 
Enhanced cytotoxicity 
Enhanced ADCC 
Cytokine production 
Limits proliferation
T cell