Nerve Activity Drives Lung Cancer Growth — Cutting the Vagus Nerve Slows Tumors
A landmark Nature study reveals that small cell lung cancer (SCLC) — one of the deadliest cancers — is profoundly regulated by neuronal activity. In mouse models, cutting the vagus nerve dramatically slowed primary lung tumor development. In the brain, SCLC cells physically form synapses with neurons, receive electrical signals, and respond with calcium influxes that drive tumor proliferation. Both glutamate- and GABA-releasing neurons promote cancer growth through paracrine signaling and direct synaptic connections. These findings establish that SCLC co-opts the same neural circuitry mechanisms seen in brain cancers, suggesting that targeting nerve-tumor communication could represent a powerful new treatment strategy for this aggressive disease.