| First Author | Goyette MA | Year | 2021 |
| Journal | Proc Natl Acad Sci U S A | Volume | 118 |
| Issue | 29 | PubMed ID | 34266948 |
| Mgi Jnum | J:307945 | Mgi Id | MGI:6727159 |
| Doi | 10.1073/pnas.2023868118 | Citation | Goyette MA, et al. (2021) Targeting Axl favors an antitumorigenic microenvironment that enhances immunotherapy responses by decreasing Hif-1alpha levels. Proc Natl Acad Sci U S A 118(29):e2023868118 |
| abstractText | Hypoxia is an important phenomenon in solid tumors that contributes to metastasis, tumor microenvironment (TME) deregulation, and resistance to therapies. The receptor tyrosine kinase AXL is an HIF target, but its roles during hypoxic stress leading to the TME deregulation are not well defined. We report here that the mammary gland-specific deletion of Axl in a HER2(+) mouse model of breast cancer leads to a normalization of the blood vessels, a proinflammatory TME, and a reduction of lung metastases by dampening the hypoxic response in tumor cells. During hypoxia, interfering with AXL reduces HIF-1alpha levels altering the hypoxic response leading to a reduction of hypoxia-induced epithelial-to-mesenchymal transition (EMT), invasion, and production of key cytokines for macrophages behaviors. These observations suggest that inhibition of Axl generates a suitable setting to increase immunotherapy. Accordingly, combining pharmacological inhibition of Axl with anti-PD-1 in a preclinical model of HER2(+) breast cancer reduces the primary tumor and metastatic burdens, suggesting a potential therapeutic approach to manage HER2(+) patients whose tumors present high hypoxic features. |
