ArticlePancreas2025
Surgical Resection of Murine PDAC Alters Hepatic Metastases and Immune Microenvironment.
Article in Pancreas, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveIdentify how surgical resection of pancreatic ductal adenocarcinoma (PDAC) affects systemic minimal residual disease (MRD).
methodsPancreatic tumors were generated by orthotopic implantation of tumor cells into the pancreas of immunocompetent mice. Tumor resection was carried out via distal pancreatectomy and splenectomy. Liver metastases and microenvironment immune changes were analyzed in resected vs. non-resected mice.
resultsResection was accompanied by proliferative expansion of liver metastases and an increase in hepatic metastatic burden. Postoperative immune changes predominantly manifested as a time-dependent increase in eosinophils and decrease in neutrophils. The postoperative hepatic eosinophilia was protective of further metastatic progression. The parenchymal findings were detectable in the circulation, and the trends observed in the mouse model modeled those seen in PDAC patients postoperatively.
conclusionCollectively, we describe a preclinical resection model that offers a means to investigate MRD. Using this model, we delineated effects of surgical resection on metastatic outgrowth and uncovered a protective link between the postoperative hepatic eosinophilia and further metastatic progression.
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