The Pdgfd-Pdgfrb axis orchestrates tumor-nerve crosstalk in pancreatic cancer
Wang, P.; Lester, N.; Perrault, E.; Su, J.; Gong, D.; Shiau, C.; Cao, J.; Nguyen, P.; Bae, J. W.; Olgun, D.; Hoffman, H.; Lam, A.; Huang-Gao, J.; Rahaman, S.; Guo, J.; Barth, J.; Caldwell, N.; Divakar, P.; Reeves, J.; Bahrami, A.; He, S.; Patrick, M.; Miller, E.; Ganci, M.; Cervantes-Jaramillo, G.; Hong, T.; Wo, J.; Roberts, H.; Weissleder, R.; Choi, H.; Fernandez-del-Castillo, C.; Cormier, K.; Ting, D. T.; Jacks, T.; Zheng, L.; Hemberg, M.; Mino-Kenudson, M.; Hwang, W. L.
Show abstract
Nerves are an integral component of the tumor microenvironment, contributing to cancer progression, metastasis, morbidity, and mortality. In pancreatic ductal adenocarcinoma (PDAC), worse clinical outcomes are associated with perineural invasion (PNI), a process by which cancer cells surround and invade nerves. Here, we employed whole-transcriptome and single-cell spatial transcriptomics to identify candidate tumor-nerve interactions that promote PNI. We discovered that Pdgfd signaling promotes key features of nerve invasion. Mechanistically, Pdgfd stimulated cancer cell invasiveness, neurite outgrowth, and direct physical engagement with glia. Pharmacological blockade of this axis reduced each of these processes in vitro as well as PNI in vivo. Thus, Pdgfd-Pdgfrb signaling mediates PNI by coordinating multifaceted cancer-neuron-glia interactions and represents a promising therapeutic strategy aimed at disrupting harmful cancer-nerve crosstalk.
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