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Ferreira D, Santos-Pereira C, Costa M, Afonso J, Yang S, Hensel J, McAndrews KM, Longatto-Filho A, Fernandes R, Melo JB, Baltazar F, Moreira JN, Kalluri R, Rodrigues LR. Exosomes modified with anti-MEK1 siRNA lead to an effective silencing of triple negative breast cancer cells. Biomater Adv 2023; 154:213643. [PMID: 37778291 DOI: 10.1016/j.bioadv.2023.213643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/24/2023] [Accepted: 09/26/2023] [Indexed: 10/03/2023]
Abstract
Triple negative breast cancer (TNBC) is a highly heterogenous disease not sensitive to endocrine or HER2 therapy and standardized treatment regimens are still missing. Therefore, development of novel TNBC treatment approaches is of utmost relevance. Herein, the potential of MAPK/ERK downregulation by RNAi-based therapeutics in a panel of mesenchymal stem-like TNBC cell lines was uncovered. Our data revealed that suppression of one of the central nodes of this signaling pathway, MEK1, affects proliferation, migration, and invasion of TNBC cells, that may be explained by the reversion of the epithelial-mesenchymal transition phenotype, which is facilitated by the MMP-2/MMP-9 downregulation. Moreover, an exosome-based system was successfully generated for the siRNA loading (iExoMEK1). Our data suggested absence of modification of the physical properties and general integrity of the iExoMEK1 comparatively to the unmodified counterparts. Such exosome-mediated downregulation of MEK1 led to a tumor regression accompanied by a decrease of angiogenesis using the chick chorioallantoic-membrane model. Our results highlight the potential of the targeting of MAPK/ERK cascade as a promising therapeutic approach against TNBC.
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Affiliation(s)
- Débora Ferreira
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Cátia Santos-Pereira
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; LABBELS-Associate Laboratory, 4710-057 Braga, Portugal
| | - Marta Costa
- Life and Health Sciences Research Institute (ICVS), University of Minho, Campus of Gualtar, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Julieta Afonso
- Life and Health Sciences Research Institute (ICVS), University of Minho, Campus of Gualtar, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Sujuan Yang
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, TX 77005, USA
| | - Janine Hensel
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, TX 77005, USA
| | - Kathleen M McAndrews
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, TX 77005, USA
| | - Adhemar Longatto-Filho
- Life and Health Sciences Research Institute (ICVS), University of Minho, Campus of Gualtar, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal; Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, São Paulo, Brazil; Laboratory of Medical Investigation (LIM 14), Faculty of Medicine, São Paulo State University, S. Paulo, Brazil
| | - Rui Fernandes
- HEMS-Histology and Electron Microscopy Service, IBMC/I3S, Universidade do Porto, 4200-135 Porto, Portugal
| | - Joana B Melo
- Cytogenetics and Genomics Laboratory, Faculty of Medicine, University of Coimbra, Portugal; Center of Investigation on Environment Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Portugal
| | - Fátima Baltazar
- Life and Health Sciences Research Institute (ICVS), University of Minho, Campus of Gualtar, Braga, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João N Moreira
- CNC-Center for Neurosciences and Cell Biology, Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Faculty of Medicine (Polo 1), Rua Larga, 3004-504 Coimbra, Portugal; Univ Coimbra-University of Coimbra, CIBB, Faculty of Pharmacy, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Raghu Kalluri
- Department of Cancer Biology, Metastasis Research Center, University of Texas MD Anderson Cancer Center, Houston, TX 77005, USA; School of Bioengineering, Rice University, Houston, TX, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Ligia R Rodrigues
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal; LABBELS-Associate Laboratory, 4710-057 Braga, Portugal.
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