Identification of Immune-Related Therapeutically Relevant Biomarkers in Breast Cancer and Breast Cancer Stem Cells by Transcriptome-Wide Analysis: A Clinical Prospective Study

Cancer stem cells (CSCs) represent a subset of tumor cells that are responsible for recurrence and metastasis of tumors. These cells are resistant to radiotherapy and chemotherapy. Immunotherapeutic strategies that target CSCs specifically have provided initial results; however, the mechanism of act...

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Veröffentlicht in:Frontiers in oncology Jg. 10; S. 554138
Hauptverfasser: Wang, Linbang, Liu, Wei, Liu, Jingkun, Wang, Yuanyuan, Tai, Jiaojiao, Yin, Xuedong, Tan, Jinxiang
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Switzerland Frontiers Media S.A 24.02.2021
Schlagworte:
breast cancer
cancer stem cell
MTFR2
Oncology
PIMREG
tumor immune infiltration
tumor immune infiltration
breast cancer
MTFR2
cancer stem cell
PIMREG
ISSN:2234-943X, 2234-943X
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Zusammenfassung:Cancer stem cells (CSCs) represent a subset of tumor cells that are responsible for recurrence and metastasis of tumors. These cells are resistant to radiotherapy and chemotherapy. Immunotherapeutic strategies that target CSCs specifically have provided initial results; however, the mechanism of action of these strategies is unclear. The data were requested from The Cancer Genome Atlas and Genotype-Tissue Expression, followed with the survival analysis and weighted gene co-expression network analysis to detect survival and stemness related genes. Patients were divided into three groups based on their immune status by applying single sample GSEA (ssGSEA) with proven dependability by ESTIMATE analysis. The filtered key genes were analyzed using oncomine, GEPIA, HPA, qRT-PCR, and functional analysis. Patients in a group with a higher stemness and a lower immune infiltration showed a worse overall survival probability, stemness and immune infiltration characteristics of breast cancer progressed in a non-linear fashion. Thirteen key genes related to stemness and immunity were identified and the functional analysis indicated their crucial roles in cell proliferation and immune escape strategies. The qRT-PCR results showed that the expression of PIMREG and MTFR2 differed in different stages of patients. Our study revealed a promising potential for CSC-target immunotherapy in the early stage of cancer and a probable value for PIMREG and MTFR2 as biomarkers and targets for immunotherapy.
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Reviewed by: Zhifang Zhang, Beckman Research Institute, City of Hope, United States; Giovanni Porta, University of Insubria, Italy
Edited by: Sofia Diana Merajver, University of Michigan, United States
This article was submitted to Cancer Molecular Targets and Therapeutics, a section of the journal Frontiers in Oncology
ISSN:2234-943X
2234-943X
DOI:10.3389/fonc.2020.554138