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• W4361828136 abstract "<div>Abstract<p>The tumor microenvironment plays a central role in cancer initiation and progression. CD248 is expressed in tumor-associated stromal cells, particularly fibroblasts and pericytes. Exploring the function of CD248 has the potential to provide biological insights into tumor-supportive stroma and potential therapeutic targets. Here, we investigated the role of stromal CD248 in lung cancer. In orthotopic lung cancer transplantation models, tumor volume, density of vessels and pericytes, and functionality of tumor vessels were all lower in mice lacking <i>Cd248</i> (<i>Cd248^LacZ/LacZ</i>) compared with <i>Cd248</i> wild-type or haploinsufficient mice. Two angiogenic factors, OPN and SERPINE1, were decreased in <i>Cd248^LacZ/LacZ</i> pericytes, and supplementation with both factors rescued their proliferation and endothelial cell tube formation–promoting ability. Mechanistically, Wnt/β-catenin signaling induced <i>Opn</i> and <i>Serpine1</i> expression and was suppressed in <i>Cd248^LacZ/LacZ</i> pericytes. CD248 interacted with Wnt pathway repressors IGFBP4 and LGALS3BP, leading to increased Wnt/β-catenin signaling. Correspondingly, administration of a β-catenin inhibitor in <i>Cd248^+/LacZ</i> mice mimicked the effect of <i>Cd248</i> loss and blocked the growth of transplanted lung tumor cells that were resistant to this inhibitor <i>in vitro</i>. In addition, CD248⁺ pericytes coexpressed OPN and SERPINE1 and correlated with increased tumor size in human lung cancer. Additionally, high expression of CD248, OPN, and SERPINE1 was associated with poor survival in lung cancer patients. In summary, CD248 derepresses Wnt signaling and upregulates OPN and SERPINE1 in pericytes, resulting in enhanced angiogenesis and lung cancer growth. This novel axis of CD248–Wnt signaling–angiogenic factors in pericytes provides a potential target for lung cancer therapy.</p>Significance:<p>These findings demonstrate that CD248 maintains pericyte function in lung cancer through the Wnt signaling pathway and present CD248 as a potential therapeutic target.</p></div>" @default.
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• W4361828136 date "2023-03-31" @default.
• W4361828136 modified "2023-10-17" @default.
• W4361828136 title "Data from CD248 Regulates Wnt Signaling in Pericytes to Promote Angiogenesis and Tumor Growth in Lung Cancer" @default.
• W4361828136 doi "https://doi.org/10.1158/0008-5472.c.6514205" @default.
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