Monitoring the Responsiveness of T and Antigen Presenting Cell Compartments in Breast Cancer Patients is Useful to Predict Clinical Tumor Response to Neoadjuvant Chemotherapy
Overview
Affiliations
Background: Vaccination of mice with tumors treated with Doxorubicin promotes a T cell immunity that relies on dendritic cell (DC) activation and is responsible for tumor control in vaccinated animals. Despite Doxorubicin in combination with Cyclophosphamide (A/C) is widely used to treat breast cancer patients, the stimulating effect of A/C on T and APC compartments and its correlation with patient's clinical response remains to be proved.
Methods: In this prospective study, we designed an in vitro system to monitor various immunological readouts in PBMCs obtained from a total of 17 breast cancer patients before, and after neoadjuvant anti-tumor therapy with A/C.
Results: The results show that before treatment, T cells and DCs, exhibit a marked unresponsiveness to in vitro stimulus: whereas T cells exhibit poor TCR internalization and limited expression of CD154 in response to anti-CD3/CD28/CD2 stimulation, DCs secrete low levels of IL-12p70 and limited CD83 expression in response to pro-inflammatory cytokines. Notably, after treatment the responsiveness of T and APC compartments was recovered, and furthermore, this recovery correlated with patients' residual cancer burden stage.
Conclusions: Our results let us to argue that the model used here to monitor the T and APC compartments is suitable to survey the recovery of immune surveillance and to predict tumor response during A/C chemotherapy.
Zhu B, Cai Y, Zhou L, Zhao L, Chen J, Shan X Nat Commun. 2025; 16(1):687.
PMID: 39814714 PMC: 11735626. DOI: 10.1038/s41467-025-55904-z.
Advances in predicting breast cancer driver mutations: Tools for precision oncology (Review).
Hao W, Rajendran B, Cui T, Sun J, Zhao Y, Palaniyandi T Int J Mol Med. 2024; 55(1).
PMID: 39450552 PMC: 11537269. DOI: 10.3892/ijmm.2024.5447.
Llano-Leon M, Martinez-Enriquez L, Rodriguez-Bohorquez O, Velandia-Vargas E, Lalinde-Ruiz N, Villota-Alava M PLoS One. 2023; 18(4):e0277714.
PMID: 37104271 PMC: 10138237. DOI: 10.1371/journal.pone.0277714.
Neoadjuvant chemotherapy modulates exhaustion of T cells in breast cancer patients.
Rodriguez I, Bernal-Estevez D, Llano-Leon M, Bonilla C, Parra-Lopez C PLoS One. 2023; 18(2):e0280851.
PMID: 36763585 PMC: 9916600. DOI: 10.1371/journal.pone.0280851.
Shi M, Liu H, Chen X, Tian Y, Chen Z, Wang K Front Immunol. 2023; 13:1088886.
PMID: 36703971 PMC: 9871553. DOI: 10.3389/fimmu.2022.1088886.