TY - JOUR
T1 - Voluntary Running Suppresses Tumor Growth through Epinephrine- and IL-6-Dependent NK Cell Mobilization and Redistribution
AU - Pedersen, Line
AU - Idorn, Manja
AU - Olofsson, Gitte H.
AU - Lauenborg, Britt
AU - Nookaew, Intawat
AU - Hansen, Rasmus Hvass
AU - Johannesen, Helle Hjorth
AU - Becker, Jürgen C
AU - Pedersen, Katrine S.
AU - Dethlefsen, Christine
AU - Nielsen, Jens
AU - Gehl, Julie
AU - Pedersen, Bente Klarlund
AU - Straten, Per Thor
AU - Højman, Pernille
PY - 2016/3/8
Y1 - 2016/3/8
N2 - Regular exercise reduces the risk of cancer and disease recurrence. Yet the mechanisms behind this protection remain to be elucidated. In this study, tumor-bearing mice randomized to voluntary wheel running showed over 60% reduction in tumor incidence and growth across five different tumor models. Microarray analysis revealed training-induced upregulation of pathways associated with immune function. NK cell infiltration was significantly increased in tumors from running mice, whereas depletion of NK cells enhanced tumor growth and blunted the beneficial effects of exercise. Mechanistic analyses showed that NK cells were mobilized by epinephrine, and blockade of β-adrenergic signaling blunted training-dependent tumor inhibition. Moreover, epinephrine induced a selective mobilization of IL-6-sensitive NK cells, and IL-6-blocking antibodies blunted training-induced tumor suppression, intratumoral NK cell infiltration, and NK cell activation. Together, these results link exercise, epinephrine, and IL-6 to NK cell mobilization and redistribution, and ultimately to control of tumor growth.
AB - Regular exercise reduces the risk of cancer and disease recurrence. Yet the mechanisms behind this protection remain to be elucidated. In this study, tumor-bearing mice randomized to voluntary wheel running showed over 60% reduction in tumor incidence and growth across five different tumor models. Microarray analysis revealed training-induced upregulation of pathways associated with immune function. NK cell infiltration was significantly increased in tumors from running mice, whereas depletion of NK cells enhanced tumor growth and blunted the beneficial effects of exercise. Mechanistic analyses showed that NK cells were mobilized by epinephrine, and blockade of β-adrenergic signaling blunted training-dependent tumor inhibition. Moreover, epinephrine induced a selective mobilization of IL-6-sensitive NK cells, and IL-6-blocking antibodies blunted training-induced tumor suppression, intratumoral NK cell infiltration, and NK cell activation. Together, these results link exercise, epinephrine, and IL-6 to NK cell mobilization and redistribution, and ultimately to control of tumor growth.
U2 - 10.1016/j.cmet.2016.01.011
DO - 10.1016/j.cmet.2016.01.011
M3 - Letter
C2 - 26895752
SN - 1550-4131
VL - 23
SP - 554
EP - 562
JO - Cell Metabolism
JF - Cell Metabolism
IS - 3
ER -