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                <term xml:lang="en">TAM</term>
                <term xml:lang="en">phosphoenolpyruvate</term>
                <term xml:lang="en">PEP</term>
                <term xml:lang="en">polydimethylsiloxane</term>
                <term xml:lang="en">PDMS</term>
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                <term xml:lang="en">biological processes CAF</term>
                <term xml:lang="en">adenosine 5′-diphosphate BP</term>
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                <term xml:lang="en">gene ontology HIF-1</term>
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                <term xml:lang="en">deregulated protein</term>
                <term xml:lang="en">ECM</term>
                <term xml:lang="en">extracellular matrix</term>
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                <term xml:lang="en">extracellular vesicle</term>
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              <p>The fibrotic stroma characterizing pancreatic ductal adenocarcinoma (PDAC) derives from a progressive tissue rigidification, which induces epithelial mesenchymal transition and metastatic dissemination. The aim of this study was to investigate the influence of matrix stiffness on PDAC progression by analyzing the proteome of PDAC-derived extracellular vesicles (EVs). PDAC cell lines (mPDAC and KPC) were grown on synthetic supports with a stiffness close to non-tumor (NT) or tumor tissue (T), and the protein expression levels in cell-derived EVs were analyzed by a quantitative MS E label-free mass spectrometry approach. Our analysis figured out 15 differentially expressed proteins (DEPs) in mPDAC-EVs and 20 DEPs in KPC-EVs in response to matrix rigidification. Up-regulated proteins participate to the processes of metabolism, matrix remodeling, and immune response, altogether hallmarks of PDAC progression. A multimodal network analysis revealed that the majority of DEPs are strongly related to pancreatic cancer. Interestingly, among DEPs, 11 related genes (ACTB)</p>
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