Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Effect of human breast tumor supernatant on normal CD4+ T cells (Confirmation Set SN)

ABSTRACT: CD4+ helper T (Th) cells are critical regulators of immune responses but their role in breast cancer is currently unknown. This work aims to characterize Th cells infiltrating invasive primary human breast tumors, analyze the influence by the tumor microenvironment and identify Th cell specific prognostic gene signatures. CD4+ T cells isolated from the tumor (TIL), axillary lymph node (LN) and blood (PB) of 10 patients were analyzed on Affymetrix U133 Plus 2.0 arrays. A confirmation set of 60 patients were studied by flow cytometry, qRT-PCR or immunohistochemistry and analyzed according to the extent of the tumor immune infiltrate. Gene expression profiles of freshly isolated TIL were also compared with TIL that had been rested overnight or with CD4+ T cells [non-stimulated (NS) or stimulated (S)] from healthy donor PB treated with tumor supernatant (SN). Comparing gene expression profiles of donor blood derived memory CD4+ T cells [non-stimulated (NS) or stimulated (S)] with and without tumor supernatant (SN) treatment Memory CD4+ T cells isolated from a healthy donor blood (NS or S) were treated (and as control: untreated samples in biological triplicate) with SN obtained from fresh breast tumor homogenates of 4 patients and analyzed on Affymetrix U133 Plus 2.0 arrays

ORGANISM(S): Homo sapiens

SUBMITTER: Chunyan GU 

PROVIDER: E-GEOD-36766 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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CD4⁺ T cells are critical regulators of immune responses, but their functional role in human breast cancer is relatively unknown. The goal of this study was to produce an image of CD4⁺ T cells infiltrating breast tumors using limited ex vivo manipulation to better understand the in vivo differences associated with patient prognosis. We performed comprehensive molecular profiling of infiltrating CD4⁺ T cells isolated from untreated invasive primary tumors and found that the infiltrating T cell su  ...[more]

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