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Disruption of Fibroblast MYD88 Signaling Promotes Antitumor Immunity in Pancreatic Ductal Adenocarcinoma [scRNAseq_ICBCA4948tx]

GSE289401 Mus musculus Expression profiling by high throughput sequencing 9 samples Submitted 2025/08/19 Platform GPL24247
Summary
Pancreatic ductal adenocarcinoma (PDAC) continues to carry a dismal prognosis. The disease is characterized by a uniquely dense fibrotic matrix generated by cancer-associated fibroblasts (CAFs). We have previously demonstrated that fibroblast-driven chronic inflammation suppresses T cell function through a MYD88-dependent mechanism. While extensively studied in myeloid cells, the role of MYD88 signaling in CAFs and its effects on PDAC remain poorly understood. In this study, we identify a MYD88-driven inflammatory CAF population in PDAC using a combination of bulk, single-cell, and spatial transcriptomic studies. Using an innovative collagen gel implantation model, we demonstrate that loss of MYD88 in CAFs enhances T cell infiltration and suppresses tumor growth. Combining MYD88 inhibition with immune checkpoint blockade significantly reduces tumor size and enhances antitumor immune responses, underscoring its potential as a therapeutic target in PDAC.
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Also filed as BioProject PRJNA1222859 and SRA study SRP563466. Searching any of these in the dataset finder brings you back here.

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