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PAI-1 derived cancer-associated fibroblasts in the esophageal squamous cell carcinoma promotes the migration and invasion of cancer cells and macrophages by interaction with LRP1

ABSTRACT: Cancer-associated fibroblasts (CAFs) are known to be involved in the progression of various cancers. However, the roles of CAFs in the esophageal squamous cell carcinoma (ESCC) microenvironment remain unclear. We previously co-cultured human bone marrow-derived mesenchymal stem cells (MSCs) with ESCC cells and confirmed the induction of fibroblast activation protein (FAP) in MSCs, which we defined as CAF-like cells. To investigate the roles of CAFs, we performed cDNA microarray analysis between MSCs and CAF-like cells and found that SERPINE1 was highly expressed in CAF-like cells when compared to MSCs. Plasminogen activator inhibitor-1 (PAI-1), encoded by SERPINE1, is generally accepted to play tumor promoting roles and act as a poor prognostic indicator in several cancers. PAI-1 derived from CAF-like cells promoted the cell migration and invasion of ESCC cells by activating Akt and Erk1/2 signaling pathways via low-density lipoprotein receptor related protein 1 (LRP1), the receptor of PAI-1. The higher expression levels of PAI-1 and LRP1 were correlated with the poor prognosis in ESCC patients. These results suggest that PAI-1/LRP1 axis contributes to the progression of ESCC.

ORGANISM(S): Homo sapiens

PROVIDER: GSE143138 | GEO | 2020/07/01

REPOSITORIES: GEO

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Project description:Carcinoma-associated fibroblasts (CAFs) that express ?-smooth-muscle-actin (?SMA+) contribute to cancer progression, but their precise origin and role in tumorigenesis is not established. Using mouse models of inflammation-induced gastric cancer, we show that at least 20% of CAFs originate from bone marrow and derive from mesenchymal stem cells (MSCs). Surprisingly, we find that ?SMA+ myofibroblasts (MF) are niche cells normally present in bone marrow and increase markedly in the bone marrow and blood during progression to dysplasia. MSC-derived CAFs that are recruited to the dysplastic stomach express IL-6, Wnt5? and BMP4 and show DNA hypomethylation. Bone marrow (BM)-derived CAFs strongly promote tumor growth in organotypic and xenograft models. In addition, CAFs are generated from MSCs and are recruited to distant tumor sites in a TGF-?- and SDF-1?-dependent manner. Carcinogenesis therefore involves the expansion and relocation of normal bone marrow niche cells to the tumor site where they create a new niche to sustain cancer progression. Since resident (non-BM-derived) CAFs could not be cultured and directly compared to BM-derived CAFs, we additionally isolated total RFP(+) gastric CAFs from aSMA-RFP mice with Helicobacter felis-induced dysplasia, and compared them to GFP(+) BM-derived gastric CAFs from mice with H. felis-induced dysplasia mice that had been transplanted with UBC-EGFP bone marrow. The RFP+ CAFs (HF CAF) represent total CAFs (of which only 20% were BM-derived), while the latter represented only BM-derived CAFs (BM CAF). We compared their gene expression using the Illumina array (MouseWG-6v2) directly after FACS sorting. Interestingly, the GFP+ BM-derived CAFs expressed higher levels of inflammatory genes (IL-6, IL-1?, IL-33) and a number of tumor and stem cell associated factors (CCL5, SPP1, Notch3, MMP9, CD47, CXCR4, PARP10,) compared to the total (RFP+) population of gastric CAFs. Comparison of bone marrow-derived GFP-labeled gastric CAFs versus all gastric CAFs.

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PAI-1 derived cancer-associated fibroblasts in the esophageal squamous cell carcinoma promotes the migration and invasion of cancer cells and macrophages by interaction with LRP1

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