Article ; Online: Ligand-mediated PAI-1 inhibition in a mouse model of peritoneal carcinomatosis.
Cell reports. Medicine
2022 Volume 3, Issue 2, Page(s) 100526
Abstract: ... in a prospective study (n = 149). Via single-cell sequencing experiments, we uncover that PAI-1, a key component ... stratification of ascites using PAI-1 levels and STAT3 activation in ascites-treated cells highlight ...
Abstract | Peritoneal carcinomatosis (PC) present a ubiquitous clinical conundrum in all intra-abdominal malignancies. Via functional and transcriptomic experiments of ascites-treated PC cells, we identify STAT3 as a key signaling pathway. Integrative analysis of publicly available databases and correlation with clinical cohorts (n = 7,359) reveal putative clinically significant activating ligands of STAT3 signaling. We further validate a 3-biomarker prognostic panel in ascites independent of clinical covariates in a prospective study (n = 149). Via single-cell sequencing experiments, we uncover that PAI-1, a key component of the prognostic biomarker panel, is largely secreted by fibroblasts and mesothelial cells. Molecular stratification of ascites using PAI-1 levels and STAT3 activation in ascites-treated cells highlight a therapeutic opportunity based on a phenomenon of paracrine addiction. These results are recapitulated in patient-derived ascites-dependent xenografts. Here, we demonstrate therapeutic proof of concept of direct ligand inhibition of a prognostic target within an enclosed biological space. |
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MeSH term(s) | Animals ; Ascites ; Disease Models, Animal ; Humans ; Ligands ; Mice ; Peritoneal Neoplasms ; Plasminogen Activator Inhibitor 1/genetics ; Prospective Studies |
Chemical Substances | Ligands ; Plasminogen Activator Inhibitor 1 |
Language | English |
Publishing date | 2022-02-15 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ISSN | 2666-3791 |
ISSN (online) | 2666-3791 |
DOI | 10.1016/j.xcrm.2022.100526 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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