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Pàgina inicial > Articles > Articles publicats > Targeting HER2-AXL heterodimerization to overcome resistance to HER2 blockade in breast cancer |
Data: | 2022 |
Resum: | Anti-HER2 therapies have markedly improved prognosis of HER2-positive breast cancer. However, different mechanisms play a role in treatment resistance. Here, we identified AXL overexpression as an essential mechanism of trastuzumab resistance. AXL orchestrates epithelial-to-mesenchymal transition and heterodimerizes with HER2, leading to activation of PI3K/AKT and MAPK pathways in a ligand-independent manner. Genetic depletion and pharmacological inhibition of AXL restored trastuzumab response in vitro and in vivo. AXL inhibitor plus trastuzumab achieved complete regression in trastuzumab-resistant patient-derived xenograft models. Moreover, AXL expression in HER2-positive primary tumors was able to predict prognosis. Data from the PAMELA trial showed a change in AXL expression during neoadjuvant dual HER2 blockade, supporting its role in resistance. Therefore, our study highlights the importance of targeting AXL in combination with anti-HER2 drugs across HER2-amplified breast cancer patients with high AXL expression. Furthermore, it unveils the potential value of AXL as a druggable prognostic biomarker in HER2-positive breast cancer. AXL is a prognostic biomarker and a potential therapeutic target to restore trastuzumab response in HER2 + breast cancer. |
Ajuts: | Ministerio de Economía y Competitividad AC15/00062 Ministerio de Economía y Competitividad CB16/12/00449 Instituto de Salud Carlos III PI19/01181 Instituto de Salud Carlos III PI19/01846 Instituto de Salud Carlos III PI18/01219 Ministerio de Economía y Competitividad CB16/12/00481 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Publicat a: | Science advances, Vol. 8, Issue 20 (May 2022) , art. eabk2746, ISSN 2375-2548 |
18 p, 1.6 MB |