학술논문
Matrix Metalloproteinase-9 Expression Is Associated with the Absence of Response to Neoadjuvant Chemotherapy in Triple-Negative Breast Cancer Patients.
Document Type
Article
Author
Lejeune, Marylène; Reverté, Laia; Gallardo, Noèlia; Sauras, Esther; Bosch, Ramon; Mata, Daniel; Roso, Albert; Petit, Anna; Peg, Vicente; Riu, Francisco; García-Fontgivell, Joan; Relea, Fernanda; Vieites, Begoña; de la Cruz-Merino, Luis; Arenas, Meritxell; Rodriguez, Valeri; Galera, Juana; Korzynska, Anna; Plancoulaine, Benoît; Álvaro, Tomás
Source
Subject
*TRIPLE-negative breast cancer
*NEOADJUVANT chemotherapy
*CANCER patients
*PROGNOSIS
*REGULATORY T cells
*BREAST
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Language
ISSN
1661-6596
Abstract
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. [ABSTRACT FROM AUTHOR]