InSyBio is happy to announce a new scientific publication titled “Dual Role of Cancer Epithelial-Specific TRAF3 in Regulating Breast Cancer Cell Survival and Lymphocyte Activity,” published in International Journal of Molecular Sciences.
We would like to congratulate all the authors, Chaido Sirinian, Anne-Lise de Lastic, Harry Zaverdas, Martha Nifora, Dimitra Georgakopoulou, Martina Samiotaki, Maria Ioanna Argentou, Stavros Peroukidis, Søren E. Degn, Maria Rusan, Konstantinos Theofilatos, Seferina Mavroudi, Anastasios D. Papanastasiou, and Angelos Koutras, on this publication!
The study investigates the role of TRAF3 in breast cancer, focusing on both cancer cell survival and interactions with the tumor immune microenvironment. TRAF3 is an important regulator of NF-κB signaling, with established roles in immune function, but its specific functions in cancer remain complex and context-dependent.
To examine this role, the authors employed a wide array of experimental and computational approaches, such as analysis of public breast cancer datasets, TRAF3-expressing breast cancer cell lines, mass spectrometry analysis, functional assays, co-culture systems with PBMCs, pathway analysis, and single-cell transcriptomics.
The findings suggest that higher TRAF3 expression is associated with more favorable prognosis-related features in breast cancer. In breast cancer cell models, TRAF3 overexpression reduced colony formation and affected apoptosis-related markers, including reduced BCL-2 and increased Caspase-9 expression. Proteomic and pathway analyses further linked TRAF3 with processes related to cell cycle regulation, apoptosis, and immune responses.
Importantly, the study also showed that TRAF3-expressing breast cancer cells may influence immune activity. These cells displayed reduced PD-L1 levels and, in co-culture experiments, promoted a more pro-inflammatory immune profile, including increased IFN-γ and TNF-α, reduced IL-10, lower Treg levels, and changes in NK cell populations. Single-cell transcriptomic analysis further supported the association between TRAF3 expression in cancer epithelial cells and immune-related pathways, including antigen presentation and interferon-related responses.
InSyBio is especially pleased to have contributed to this publication through the participation of Harry Zaverdas, Konstantinos Theofilatos, and Seferina Mavroudi among the co-authors. This collaboration showcases the value of integrating bioinformatics single-cell analysis and proteomics, with cancer biology and immunology, to better understand the complex interactions between breast cancer cells and the tumor microenvironment.
This publication represents an important contribution to breast cancer and immuno-oncology research, supporting further investigation of TRAF3 as a key molecule for regulating cancer cell survival and the immune microenvironment.
Link references
You can find the article here: https://doi.org/10.3390/ijms27104414 .