Identification and validation of a combined hypoxia and immune index for triple-negative breast cancer.

Molecular Oncology
Shaoquan ZhengXiaoming Xie

Abstract

The interaction between hypoxia and immune status has been confirmed in various cancer settings, and corresponding treatments have been investigated. However, reliable biomarkers are needed for individual treatment, so we sought to develop a novel scoring system based on hypoxia and immune status. Prognostic hypoxia-immune status-related signatures of patients with triple-negative breast cancer (TNBC) were identified in The Cancer Genome Atlas (TCGA) (N = 158), Molecular Taxonomy of Breast Cancer International Consortium (METABRIC) (N = 297), and GSE58812 (N = 107). LASSO Cox regression was used for model construction. Hypoxia and immune status expression profiles were analyzed, and infiltrating immune cells were compared. Quantitative real-time PCR (qRT-PCR) was used for validation in the Sun Yat-sen University Cancer Center (SYSUCC) cohort, and immunofluorescence was applied for the detection of hypoxia and immune markers in cancer tissues. Ten cross-cohort prognostic hypoxia-immune signatures were included to construct the comprehensive index of hypoxia and immune (CIHI) in the METABRIC cohort. Two subgroups of patients with distinct hypoxia-immune status conditions were identified using CIHI: hypoxiahigh /immunelow and hypo...Continue Reading

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Citations

Jan 12, 2021·Frontiers in Cell and Developmental Biology·Yang LiuZewen Song

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Datasets Mentioned

BETA
GSE58812

Methods Mentioned

BETA
PCA

Software Mentioned

METABRIC
xCell
R
ESTIMATE
maftools
survminer
KM plotter
ssGSEA
Circos plots
limma

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