Xunian Zhou, Valerie S. LeBleu, Eliot Fletcher-Sananikone, Jiha Kim, Jianli Dai, Bingrui Li, Chia-Chin Wu, Hikaru Sugimoto, Toru Miyake, Lisa M. Becker, Olga V. Volpert, Erica Lawson, Cristina Espinosa Da Silva, Sarah I. Patel, Akane Kizu, Ehsan A. Ehsanipour, Di Sha, Jose Antonio Karam, Kathleen M. McAndrews, Raghu Kalluri
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引用次数: 0
Abstract
Carcinomas are associated with metastasis to specific organs while sparing others. Breast cancer presents with lung metastasis but rarely kidney metastasis. Using this difference as an example, we queried the mechanism(s) behind the proclivity for organ-specific metastasis. We used spontaneous and implant models of metastatic mammary carcinoma coupled with inflammatory tissue fibrosis, single-cell sequencing analyses and functional studies to unravel the causal determinants of organ-specific metastasis. Here we show that lung metastasis is facilitated by angiopoietin 2 (Ang2)-mediated suppression of lung-specific endothelial tight junction protein Claudin 5, which is augmented by the inflammatory fibrotic microenvironment and prevented by anti-Ang2 blocking antibodies, while kidney metastasis is prevented by non-Ang2-responsive Claudins 2 and 10. Suppression of Claudins 2 and 10 was sufficient to induce the emergence of kidney metastasis. This study illustrates the influence of organ-specific vascular heterogeneity in determining organotropic metastasis, independent of cancer cell-intrinsic mechanisms. Kalluri and colleagues use mammary carcinoma models to study the causes of metastatic organotropism and find an organ-specific role for angiopoietin 2 in driving lung metastasis through the suppression of the tight junction protein Claudin 5.
期刊介绍:
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