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Regulatory T cells crosstalk with tumor and endothelium through lymphotoxin signaling

GSE270960 Mus musculus Expression profiling by high throughput sequencing 9 samples Submitted 2024/11/05 Platform GPL24247
Summary
Tregs with multifaceted functions suppress anti-tumor immunity by signaling surrounding cells. Tregs use the surface LTa1b2 to preferentially stimulate LTbR nonclassical NFkB signaling on both tumor and LECs to accelerate tumor growth and metastasis. Selectively targeting LTβR nonclassical NFkB pathways on both tumors and LECs cocultured with Tregs, inhibits tumor growth and migration in vitro. Leveraging in vivo Treg LTa1b2 interactions with LTβR on tumor and LECs, transfer of WT but not LTa-/- Tregs promotes B16F10 melanoma growth and tumor cell-derived chemokines in LTβR-/- mice; and increases SOX18 and FLRT2 in lymphatic vessels of LTbR-/-melanoma. Blocking the nonclassical pathways suppresses tumor growth and lymphatic metastasis by reducing chemokine production, restricting Treg and MDSC recruitment to tumors, and retaining intratumoral IFNg+ CD8 T cells. Our data reveals that Treg LTa1b2 promotes LTbR nonclassical NFkB signaling in tumor cells and LECs providing a rational strategy to prevent Treg promoted tumor growth and metastasis. Best regards
Published in
Regulatory T cells crosstalk with tumor cells and endothelium through lymphotoxin signaling
Piao W, Wu L, Xiong Y et al. · Nature communications 2024 · PMID 39622857 · doi:10.1038/s41467-024-54874-y
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Also filed as BioProject PRJNA1129121 and SRA study SRP516606. Searching any of these in the dataset finder brings you back here.

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