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Correlation between biological and mechanical properties of extracellular matrix from colorectal peritoneal metastases in human tissues
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Correlation between biological and mechanical properties of extracellular matrix from colorectal peritoneal metastases in human tissues
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Journal Article
Correlation between biological and mechanical properties of extracellular matrix from colorectal peritoneal metastases in human tissues
2023
Overview
Peritoneal metastases (PM) are common routes of dissemination for colorectal cancer (CRC) and remain a lethal disease with a poor prognosis. The properties of the extracellular matrix (ECM) are important in cancer development; studying their changes is crucial to understand CRC-PM development. We studied the elastic properties of ECMs derived from human samples of normal and neoplastic PM by atomic force microscopy (AFM); results were correlated with patient clinical data and expression of ECM components related to metastatic spread. We show that PM progression is accompanied by stiffening of the ECM, increased cancer associated fibroblasts (CAF) activity and increased deposition and crosslinking in neoplastic matrices; on the other hand, softer regions are also found in neoplastic ECMs on the same scales. Our results support the hypothesis that local changes in the normal ECM can create the ground for growth and spread from the tumour of invading metastatic cells. We have found correlations between the mechanical properties (relative stiffening between normal and neoplastic ECM) of the ECM and patients’ clinical data, like age, sex, presence of protein activating mutations in
BRAF
and
KRAS
genes and tumour grade. Our findings suggest that the mechanical phenotyping of PM-ECM has the potential to predict tumour development.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
