EXTRACELLULAR VESICLE MIRNAS PROFILE AS PREDICTORS OF PATHOLOGICAL COMPLETE RESPONSE IN BREAST CANCER UNDERGOING NEOADJUVANT THERAPY
DOI:
https://doi.org/10.61229/mpj.v2i2.61Palabras clave:
Câncer de Mama Triplo Negativo, Terapia Neoadjuvante, MicroRNAs, Resposta Patológica Completa, Neoplasias da MamaResumen
Introduction: Neoadjuvant therapy in breast cancer allows for the assessment of the degree of pathological response in the surgical specimen, providing prognostic and predictive information to guide subsequent treatments. Pathological complete response (pCR) is a prognostic factor widely associated with overall survival and is commonly used as a surrogate endpoint in neoadjuvant studies¹. Small non-coding RNAs, such as miRNAs, play crucial roles in various carcinogenic pathways and show promise as predictors of pCR²,³. Developing a molecular signature of miRNAs extracted from tumor-derived extracellular vesicles (EVs) in peripheral blood holds potential for use as a biomarker⁴,⁵. This approach could optimize neoadjuvant protocols to increase pCR rates and reduce toxicity. Therefore, this study seeks to initiate the development of less invasive and personalized methodologies to improve therapeutic outcomes in breast cancer. Objective: To investigate the association between miRNAs derived from EVs and pathological complete response in patients with breast cancer undergoing neoadjuvant therapy. Methods: Circulating EVs were isolated from peripheral blood samples collected before neoadjuvant treatment from 48 patients with breast cancer (CAAE - 82703418.8.0000.5121). Total RNAs within these vesicles were extracted and sequenced, and miRNA expression patterns were correlated with the presence of pCR in surgical specimens using bioinformatics analysis to obtain prognostic information⁶,⁷. Results: Among the 48 patients analyzed, a differential expression profile was noted in 12 patients with triple-negative breast cancer. Bioinformatics analysis revealed that overexpression of has-mir-489-5p was present in patients who achieved pCR, while overexpression of has-mir-1237-3p was observed in those without a complete pathological response⁸. Conclusion: These findings suggest that hsa-mir-489-5p acts as a tumor suppressor, while has-mir-1237-3p functions as an oncomiR, showing predictive potential for pCR. These miRNAs may represent a potential new tool for predicting response to neoadjuvant treatment, contributing to a more personalized and less invasive approach to breast cancer management⁹,¹⁰.
Descargas
Citas
Yau C, van der Noordaa M, Wei J, Osdoit M, Hao N, Young SM, et al. Residual cancer burden after neoadjuvant chemotherapy and long-term survival outcomes in breast cancer: a multicentre pooled analysis of 5161 patients. Lancet Oncol. 2022;23(1):149-60. doi:10.1016/S1470-2045(21)00661-7.
Andersen GB, Tost J. Circulating miRNAs as biomarkers in cancer. Recent Results Cancer Res. 2020;215:277-98. doi:10.1007/978-3-030-35079-6_12. DOI: https://doi.org/10.1007/978-3-030-26439-0_15
Conti I, Varano G, Simioni C, Laface I, Milani D, Rimondi E, et al. miRNAs as influencers of cell-cell communication in tumor microenvironment. Cells. 2020;9(1):220. doi:10.3390/cells9010220. DOI: https://doi.org/10.3390/cells9010220
García-Vázquez R, Ruíz-García E, Meneses-García A, Astudillo-de la Vega H, Lara-Medina F, Alvarado-Miranda A, et al. A microRNA signature associated with pathological complete response to novel neoadjuvant therapy regimen in triple-negative breast cancer. Tumour Biol. 2017;39(3):1010428317695949. doi:10.1177/1010428317695949. DOI: https://doi.org/10.1177/1010428317702899
Ohzawa H, Saito S, Koga Y, Yamashita T, Ono R, Akimoto K, et al. Usefulness of miRNA profiles for predicting pathological responses to neoadjuvant chemotherapy in patients with human epidermal growth factor receptor 2-positive breast cancer. Oncol Lett. 2017;14(1):319-26. doi:10.3892/ol.2017.6160. DOI: https://doi.org/10.3892/ol.2017.6160
Gebert D, Hewel C, Rosenkranz D. Unitas: the universal tool for annotation of small RNAs. BMC Genomics. 2017;18(1):644. doi:10.1186/s12864-017-4031-9. DOI: https://doi.org/10.1186/s12864-017-4031-9
Love MI, Huber W, Anders S. Moderated estimation of fold change and dispersion for RNA-seq data with DESeq2. Genome Biol. 2014;15(12):550. doi:10.1186/s13059-014-0550-8. DOI: https://doi.org/10.1186/s13059-014-0550-8
Wang DY, Jiang Z, Ben-David Y, Woodgett JR, Zacksenhaus E. Molecular stratification within triple-negative breast cancer subtypes. Sci Rep. 2019;9(1):19107. doi:10.1038/s41598-019-55454-x. DOI: https://doi.org/10.1038/s41598-019-55710-w
Symmans WF, Wei C, Gould R, Yu X, Zhang Y, Liu M, et al. Assessment of residual cancer burden and event-free survival in neoadjuvant treatment for high-risk breast cancer: an analysis of data from the I-SPY2 randomized clinical trial. JAMA Oncol. 2021;7(11):1654-63. doi:10.1001/jamaoncol.2021.3776.
Lee YS, Dutta A. MicroRNAs in cancer. Annu Rev Pathol. 2009;4:199-227. doi:10.1146/annurev.pathol.4.110807.092222 DOI: https://doi.org/10.1146/annurev.pathol.4.110807.092222
Descargas
Publicado
Cómo citar
Número
Sección
Licencia
Derechos de autor 2025 Mário Penna Journal

Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-CompartirIgual 4.0.
Autores que publicam nesta revista concordam com os seguintes termos:
- Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade.
- Declaro, ainda, que uma vez publicado na revista Mário Penna Journal, editada pelo Instituto Mário Penna, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores, caso haja, a qualquer outro periódico.
- Por meio deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo ao Instituto Mário Penna e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).

A Revista Mário Penna Journal é licenciada sob uma licença Creative Commons Atribuição-NãoComercial-CompartilhaIgual 4.0 Internacional
