Matrix Metalloproteinase-9 Expression Is Associated with the Absence of Response to Neoadjuvant Chemotherapy in Triple-Negative Breast Cancer Patients

Triple-negative breast cancer (TNBC) is particularly challenging due to the weak or absent response to therapeutics and its poor prognosis. The effectiveness of neoadjuvant chemotherapy (NAC) response is strongly influenced by changes in elements of the tumor microenvironment (TME). This work aimed...

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Detalles Bibliográficos
Autores: Lejeune, Marylène, Reverté, Laia, Gallardo, Noèlia, Sauras, Esther, Bosch, Ramon, Mata, Daniel, Roso Llorach, Albert, Petit, Anna, Peg, Vicente, Riu, Francisco, García Fontgivell, Joan, Relea, Fernanda, Vieites, Begoña, Cruz Merino, Luis de la, Arenas Prat, Meritxell, Rodriguez, Valeri, Galera, Juana, Korzynska, Anna, Plancoulaine, Benoît, Álvaro, Tomás, López, Carlos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/204323
Acceso en línea:https://hdl.handle.net/2445/204323
Access Level:acceso abierto
Palabra clave:Adjuvants immunològics
Càncer de mama
Immunological adjuvants
Breast cancer
Descripción
Sumario:Triple-negative breast cancer (TNBC) is particularly challenging due to the weak or absent response to therapeutics and its poor prognosis. The effectiveness of neoadjuvant chemotherapy (NAC) response is strongly influenced by changes in elements of the tumor microenvironment (TME). This work aimed to characterize the residual TME composition in 96 TNBC patients using immunohistochemistry and in situ hybridization techniques and evaluate its prognostic implications for partial responders vs. non-responders. Compared with non-responders, partial responders containing higher levels of CD83+ mature dendritic cells, FOXP3+ regulatory T cells, and IL-15 expression but lower CD138+ cell concentration exhibited better OS and RFS. However, along with tumor diameter and positive nodal status at diagnosis, matrix metalloproteinase-9 (MMP-9) expression in the residual TME was identified as an independent factor associated with the impaired response to NAC. This study yields new insights into the key components of the residual tumor bed, such as MMP-9, which is strictly associated with the lack of a pathological response to NAC. This knowledge might help early identification of TNBC patients less likely to respond to NAC and allow the establishment of new therapeutic targets.

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