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Sustained Adrenergic Signaling Promotes Intratumoral Innervation through BDNF Induction
Journal article   Open access   Peer reviewed

Sustained Adrenergic Signaling Promotes Intratumoral Innervation through BDNF Induction

Julie K Allen, Guillermo N Armaiz-Pena, Archana S Nagaraja, Nouara C Sadaoui, Tatiana Ortiz, Robert Dood, Merve Ozcan, Danielle M Herder, Monika Haemmerle, Kshipra M Gharpure, …
Cancer research (Chicago, Ill.), Vol.78(12), pp.3233-3242
06/15/2018
DOI: 10.1158/0008-5472.CAN-16-1701
PMCID: PMC6004256
PMID: 29661830
url
https://doi.org/10.1158/0008-5472.CAN-16-1701View
Published (Version of record) Open Access

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. Sustained adrenergic signaling promotes tumor growth and metastasis through BDNF-mediated tumoral innervation. .
Membrane Glycoproteins - metabolism Signal Transduction Humans Neoplasms - mortality Receptors, Adrenergic, beta-3 - metabolism Tumor Microenvironment - physiology Peripheral Nerves - pathology Xenograft Model Antitumor Assays Feedback, Physiological Animals Norepinephrine - metabolism Guanine Nucleotide Exchange Factors - metabolism Cell Line, Tumor Female Brain-Derived Neurotrophic Factor - metabolism Mice Peripheral Nerves - metabolism Neoplasms - pathology Cyclic AMP - metabolism Receptor, trkB - metabolism

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