Abstract
Recently, immunotherapy has emerged as a promising and effective method for treating triple-negative breast cancer (TNBC). However, challenges still persist. Immunogenic cell death (ICD) is considered a prospective treatment and potential combinational treatment strategy as it induces an anti-tumor immune response by presenting the antigenic epitopes of dead cells. Nevertheless, the ICD process in TNBC and its impact on disease progression and the response to immunotherapy are not well understood. In this study, we observed dysregulation of the ICD process and verified the altered expression of prognostic ICD genes in TNBC through quantitative real-time polymerase chain reaction (qRT-PCR) analysis. To investigate the potential role of the ICD process in TNBC progression, we determined the ICD-dependent subtypes, and two were identified. Analysis of their distinct tumor immune microenvironment (TIME) and cancer hallmark features revealed that Cluster 1 and 2 corresponded to the immune “cold” and “hot” phenotypes, respectively. In addition, we constructed the prognostic signature ICD score of TNBC patients and demonstrated its clinical independence and generalizability. The ICD score could also serve as a potential biomarker for immune checkpoint blockade and may aid in the identification of targeted effective agents for individualized clinical strategies.
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Data Availability
The raw data supporting the conclusions of this article can be acquired from the public resources of TCGA (https://portal.gdc.cancer.gov) and the GEO (https://www.ncbi.nlm.nih.gov/geo/).
Abbreviations
- AUC:
-
Area under the receiver operating characteristic curve
- BC:
-
Breast cancer
- DEG:
-
Differentially expressed gene
- GEO:
-
Gene expression omnibus
- GO:
-
Gene ontology
- KEGG:
-
Kyoto encyclopedia of genes and genomes
- IC50:
-
Half-maximal inhibitory concentration
- ICD:
-
Immunogenic cell death
- OS:
-
Overall survival
- PCA:
-
Principal component analysis
- qRT-PCR:
-
Quantitative real-time polymerase chain reaction
- ROC:
-
Receiver operating characteristic
- ssGSEA:
-
Single-sample gene set enrichment analysis
- TCGA:
-
The Cancer Genome Atlas
- TIME:
-
Tumor immune microenvironment
- TNBC:
-
Triple-negative breast cancer
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Funding
This work was supported by the National Natural Science Foundation of China (82205114) and the Natural Science Foundation of Shandong Province (ZR2020MH356).
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SL, XFL, YNQ, and CYW conceived and designed the experiments. YYS, YYW, FFL, and KXJ analyzed the data, prepared figures and tables. XFF, YW, XYS, RW, LXC and JZZ prepared figures and/or tables. SL and YYS authored or reviewed drafts of the paper. All authors approved the final version of the manuscript.
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The studies involving human participants were reviewed and approved by the ethics committee of the Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine (NO: 2021-043). The patients/participants provided their written informed consent to participate in this study.
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43657_2023_133_MOESM1_ESM.docx
Supplementary file1 Fig. S1 The co-expression analysis of ICD genes in TNBC. a Results of the TCGA TNBC samples. b Results of the TNBC cohorts (GSE103091). Fig. S2 The prognostic value of ICD genes in TNBC. a Univariate Cox proportional hazards regression analysis results of all 34 ICD genes. b The K-M curves of the OS according to the expression group of ICD genes, where the median expression was the cut-off. c The K-M curves of MFS according to the expression group of ICD genes, where the median expression was the cut-off. Fig. S3 The differential expression of ICD-related genes in malignant versus non-malignant epithelial cells. a Harmony removes sample batches: This component highlights the use of the Harmony algorithm to mitigate batch effects between samples. b Cell clustering and annotation results (including subsets 0, 2, 4, 6, and 7 as epithelial cells): This component presents the results of cell clustering and manual annotation, specifically identifying epithelial cell subsets. c Box plot of differential expression of ICD-related genes: This component utilizes a box plot to visualize the differential expression of ICD-related genes between malignant and non-malignant epithelial cells. d Heat map of differential expression of ICD-related genes: This component employs a heat map to illustrate the patterns of differential expression among the ICD-related genes in malignant and non-malignant epithelial cells (DOCX 3067 KB)
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Shi, Y., Wu, Y., Li, F. et al. Investigating the Immunogenic Cell Death-Dependent Subtypes and Prognostic Signature of Triple-Negative Breast Cancer. Phenomics 4, 34–45 (2024). https://doi.org/10.1007/s43657-023-00133-x
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DOI: https://doi.org/10.1007/s43657-023-00133-x