Abstract:
:Mounting clinical and preclinical evidence supports a key role for sustained adrenergic signaling in the tumor microenvironment as a driver of tumor growth and progression. However, the mechanisms by which adrenergic neurotransmitters are delivered to the tumor microenvironment are not well understood. Here we present evidence for a feed-forward loop whereby adrenergic signaling leads to increased tumoral innervation. In response to catecholamines, tumor cells produced brain-derived neurotrophic factor (BDNF) in an ADRB3/cAMP/Epac/JNK-dependent manner. Elevated BDNF levels in the tumor microenvironment increased innervation by signaling through host neurotrophic receptor tyrosine kinase 2 receptors. In patients with cancer, high tumor nerve counts were significantly associated with increased BDNF and norepinephrine levels and decreased overall survival. Collectively, these data describe a novel pathway for tumor innervation, with resultant biological and clinical implications.Significance: Sustained adrenergic signaling promotes tumor growth and metastasis through BDNF-mediated tumoral innervation. Cancer Res; 78(12); 3233-42. ©2018 AACR.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Allen JK,Armaiz-Pena GN,Nagaraja AS,Sadaoui NC,Ortiz T,Dood R,Ozcan M,Herder DM,Haemmerle M,Gharpure KM,Rupaimoole R,Previs RA,Wu SY,Pradeep S,Xu X,Han HD,Zand B,Dalton HJ,Taylor M,Hu W,Bottsford-Miller J,Morenodoi
10.1158/0008-5472.CAN-16-1701subject
Has Abstractpub_date
2018-06-15 00:00:00pages
3233-3242issue
12eissn
0008-5472issn
1538-7445pii
0008-5472.CAN-16-1701journal_volume
78pub_type
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