Psychological Stress Fuels Pancreatic Cancer Through Neural Communication Pathway

This groundbreaking research reveals a previously unknown molecular mechanism connecting psychological stress to pancreatic cancer progression, potentially explaining why stress accelerates one of medicine's most aggressive cancers.

Using mouse models, researchers demonstrated that psychological stress and pain activate sympathetic nerves to release noradrenaline. This stress hormone then reduces levels of ALKBH5, an important RNA-modifying enzyme, in pancreatic cancer cells. When ALKBH5 is depleted, cancer cells produce abnormally modified RNAs with altered methylation patterns.

These modified RNAs get packaged into extracellular vesicles—tiny cellular messengers—and delivered to nerves surrounding the tumor. This communication triggers excessive nerve growth (hyperinnervation) around the cancer, creating a supportive environment that accelerates tumor progression. The study confirmed this pathway's clinical relevance by showing that pancreatic cancer patients with lower ALKBH5 levels had increased tumor innervation and shorter survival times.

Most encouragingly, researchers identified fisetin, a natural flavonoid found in strawberries and other fruits, as a potential therapeutic intervention. Fisetin prevents neurons from absorbing the harmful extracellular vesicles, effectively blocking the stress-induced nerve-cancer communication and suppressing tumor progression in animal models. This discovery opens new avenues for pancreatic cancer treatment by targeting the neuroendocrine-cancer crosstalk rather than just the cancer cells themselves.