1. Construction and Verification of a Hypoxia-Related 4-lncRNA Model for Prediction of Breast Cancer
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Qiongjie Yu, Jinting Wu, Jinduo Zhao, Rongying Ou, Xuedan Du, Bin Wang, Lixiao Liu, and Ye Zhao
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Oncology ,medicine.medical_specialty ,Receiver operating characteristic ,Proportional hazards model ,business.industry ,hypoxia ,Cancer ,International Journal of General Medicine ,General Medicine ,Gene signature ,TCGA ,medicine.disease_cause ,medicine.disease ,Long non-coding RNA ,Breast cancer ,lncRNA ,breast cancer ,Internal medicine ,medicine ,long noncoding RNA ,prognosis ,Carcinogenesis ,business ,Survival analysis ,Original Research - Abstract
Ye Zhao,1,* Lixiao Liu,1,* Jinduo Zhao,1 Xuedan Du,2 Qiongjie Yu,2 Jinting Wu,2 Bin Wang,2 Rongying Ou1 1Department of Obstetrics and Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, Peopleâs Republic of China; 2Department of Chemoradiation Oncology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, Peopleâs Republic of China*These authors contributed equally to this workCorrespondence: Rongying OuDepartment of Obstetrics and Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, 325000, Peopleâs Republic of ChinaTel +86 135662227918Fax +86 577-55578033Email ourongying@163.comIntroduction: Breast cancer is the most common form of cancer worldwide and a serious threat to women. Hypoxia is thought to be associated with poor prognosis of patients with cancer. Long non-coding RNAs are differentially expressed during tumorigenesis and can serve as unambiguous molecular biomarkers for the prognosis of breast cancer.Methods: Here, we accessed the data from The Cancer Genome Atlas for model construction and performed Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses to identify biological functions. Four prognostic hypoxia-related lncRNAs identified by univariate, LASSO, and multivariate Cox regression analyses were used to develop a prognostic risk-related signature. KaplanâMeier and receiver operating characteristic curve analyses were performed, and independent prognostic factor analysis and correlation analysis with clinical characteristics were utilized to evaluate the specificity and sensitivity of the signature. Survival analysis and receiver operating characteristic curve analyses of the validation cohort were operated to corroborate the robustness of the model.Results: Our results demonstrate the development of a reliable prognostic gene signature comprising four long non-coding RNAs (AL031316.1, AC004585.1, LINC01235, and ACTA2-AS1). The signature displayed irreplaceable prognostic power for overall survival in patients with breast cancer in both the training and validation cohorts. Furthermore, immune cell infiltration analysis revealed that B cells, CD4 T cells, CD8 T cells, neutrophils, and dendritic cells were significantly different between the high-risk and low-risk groups. The high-risk and low-risk groups could be precisely distinguished using the risk signature to predict patient outcomes.Discussion: In summary, our study proves that hypoxia-related long non-coding RNAs serve as accurate indicators of poor prognosis and short overall survival, and are likely to act as potential targets for future cancer therapy.Keywords: long noncoding RNA, lncRNA, breast cancer, hypoxia, TCGA, prognosis
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- 2021