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- W3202783189 abstract "Abstract Background Perineural invasion (PNI) and autophagy are two common features in the tumor microenvironment of pancreatic cancer (PanCa) and have a negative effect on prognosis. Potential mediator cells and the molecular mechanism underlying their relationships need to be fully elucidated. Methods To investigate the autophagy of Schwann cells (SCs) in PNI, we reproduced the microenvironment of PNI by collecting clinical PNI tissue, performing sciatic nerve injection of nude mice with cancer cells and establishing a Dorsal root ganglion（DRG） coculture system with cancer cell lines. Autophagy was detected by IHC, IF, transmission electron microscopy (TEM) and western blotting assays. Apoptosis was detected by IF, TEM and western blotting. NGF targeting molecular RO 08-2750（RO） and the autophagy inhibitor Chloroquine（CQ）were utilized to evaluate the effect on autophagy and apoptosis in SCs and PanCa cells in PNI samples. Results SC autophagy is activated in PNI by paracrine NGF from PanCa cells. Autophagy-activated Schwann cells promote PNI through a) enhanced migration and axon guidance toward PanCa cells and b) increased chemoattraction to PanCa cells. The NGF-targeting reagent RO and autophagy inhibitor CQ inhibited Schwann cell autophagic flux and induced Schwann cell apoptosis. Moreover, RO and CQ could induce PanCa cell apoptosis and showed good therapeutic effects in the PNI model. Conclusions PanCa cells can induce autophagy in SCs through paracrine pathways such as the NGF/ATG7 pathway. Autophagic SCs exert a nerve-repair like effect, induce a high level of autophagy of cancer cells, provide a beacon for the invasion of cancer cells to nerve fibers, and induce directional growth of cancer cells. Targeting NGF and autophagy for PNI treatment can block nerve infiltration and is expected to provide new directions and an experimental basis for the research and treatment of nerve infiltration in pancreatic cancer." @default.
- W3202783189 created "2021-10-11" @default.
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- W3202783189 date "2021-09-21" @default.
- W3202783189 modified "2023-09-23" @default.
- W3202783189 title "Autophagic Schwann Cells Promote Perineural Invasion Mediated by the NGF/ATG7 Paracrine Pathway in Pancreatic Cancer" @default.
- W3202783189 doi "https://doi.org/10.21203/rs.3.rs-892484/v1" @default.
- W3202783189 hasPublicationYear "2021" @default.
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