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Targeting the Npy/Npy1r Signaling Axis in Mutant p53 Driven Pancreatic Cancer Impairs Metastasis

ABSTRACT: Pancreatic Cancer (PC) is a highly metastatic malignancy. Over 80% of PC patients present with distant disease, preventing potentially curative surgery. The Neuropeptide Y (NPY) system, best known for its role in controlling energy homeostasis, has also been shown to promote tumorigenesis in a range of cancer types, but its role in PC has yet to be explored. Here, we show that expression of NPY and NPY1R are upregulated in mouse PC models and human PC patients. Moreover, using the genetically engineered, autochthonous KPR172HC mouse model of PC we demonstrate that pancreas-specific and whole-body knockout of Npy1r significantly decreases metastasis to the liver. We identify that treatment with the NPY1R antagonist BIBO3304 significantly reduces KPR172HC migratory capacity on cell-derived matrices. Importantly, pharmacological NPY1R inhibition in an intrasplenic model of PC metastasis recapitulated the results of our genetic studies, with BIBO3304 significantly decreasing metastasis in the liver. Together, our results reveal that NPY/NPY1R signaling is a novel anti-metastatic target in PC.

ORGANISM(S): Mus musculus

PROVIDER: GSE283652 | GEO | 2025/03/19

REPOSITORIES: GEO

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Targeting the Npy/Npy1r Signaling Axis in Mutant p53 Driven Pancreatic Cancer Impairs Metastasis

Project description:Targeting the Npy/Npy1r Signaling Axis in Mutant p53 Driven Pancreatic Cancer Impairs Metastasis

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EB-mediated NPY expression and release

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Multi-parametric atlas of the pre-metastatic liver for prediction of metastatic outcome in early-stage pancreatic cancer

Project description:Metastasis occurs frequently after resection of pancreatic cancer (PC). We hypothesized that multiparametric analysis of pre-metastatic liver biopsies will classify patients according to their metastatic risk, timing, and organ site. Liver biopsies obtained during pancreatectomy from 49 patients with localized PC and 18 control patients with non-cancerous pancreatic lesions were analyzed combining metabolomic, tissue and single cell transcriptomics, and multiplex imaging approaches. Patients were followed prospectively (median three years) and classified into four recurrence groups; early (<6 months post resection) or late (>6 months post resection) liver metastasis (LM), extrahepatic (EH) metastasis, and disease-free survivors (NED). Overall, PC livers exhibited signs of augmented inflammation, compared to controls. Enrichment of neutrophil extracellular traps (NETs), Ki-67 upregulation, and decreased liver creatine significantly distinguished those with future metastasis from NED. Patients with future LM were characterized by scant T cell lobular infiltration, less steatosis, and higher levels of citrullinated H3, compared to patients who developed EH metastasis, who had overexpression of interferon target genes (MX1, NR1D1) and an increase of CD11B+ NK cells. Upregulation of sortilin-1 and prominent NETs, together with the lack of T cells and a reduction in CD11B+ NK cells, differentiated patients with early-onset from those with late-onset LM. Liver profiles of NED closely resembled those of controls. Using the above parameters, a machine learning-based model was developed that successfully predicted the metastatic outcome at the time of surgery with 78% accuracy. Therefore, multiparametric profiling of liver biopsies at the time of PC diagnosis may determine metastatic risk and organotropism, and guide clinical stratification for optimal treatment selection.

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