Regulatory T (Treg) cells reside in lymphoid organs and barrier tissues where they control different types of inflammatory responses. Treg cells are also found in human cancers, and studies in animal models suggest that they contribute to cancer progression. However, properties of human intratumoral Treg cells and those present in corresponding normal tissue remain largely unknown. Here, we analyzed features of Treg cells in untreated human breast carcinomas, normal mammary gland, and peripheral blood. Tumor-resident Treg cells were potently suppressive and their gene-expression pattern resembled that of normal breast tissue, but not of activated peripheral blood Treg cells. Nevertheless, a number of cytokine and chemokine receptor genes, most notably CCR8, were upregulated in tumor-resident Treg cells in comparison to normal tissue-resident ones. Our studies suggest that targeting CCR8 for the depletion of tumor-resident Treg cells might represent a promising immunotherapeutic approach for the treatment of breast cancer.

• MeSH
• dospělí MeSH
• fenotyp MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladý dospělý MeSH
• nádory prsu imunologie   MeSH
• průtoková cytometrie MeSH
• receptory CCR8 biosyntéza   imunologie   MeSH
• regulační T-lymfocyty imunologie   MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• separace buněk MeSH
• stanovení celkové genové exprese MeSH
• transkriptom MeSH
• tumor infiltrující lymfocyty MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mladý dospělý MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Research Support, N.I.H., Extramural MeSH
• Názvy látek
• CCR8 protein, human MeSH Prohlížeč
• receptory CCR8 MeSH