1. Development and validation of a four‐lipid metabolism gene signature for diagnosis of pancreatic cancer
- Author
-
Zhe Chen, Yanrong Ye, Hao Wang, Yan Qin, and Yun Shen
- Subjects
0301 basic medicine ,QH301-705.5 ,pancreatic cancer ,Gene Expression ,Cell Cycle Proteins ,Kaplan-Meier Estimate ,Computational biology ,Biology ,ENCODE ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,Pancreatic cancer ,Databases, Genetic ,Biomarkers, Tumor ,medicine ,Humans ,Gene Regulatory Networks ,Biology (General) ,Gene ,Research Articles ,Survival analysis ,Genome ,Framingham Risk Score ,WGCNA ,Gene Expression Profiling ,Lipid metabolism ,Gene signature ,TCGA ,Lipid Metabolism ,medicine.disease ,four‐gene signature ,Survival Analysis ,Gene Expression Regulation, Neoplastic ,Pancreatic Neoplasms ,030104 developmental biology ,030220 oncology & carcinogenesis ,prognosis ,Transcriptome ,Research Article ,GNB3 - Abstract
Abnormal lipid metabolism is closely related to the malignant biological behavior of tumor cells. Such abnormal lipid metabolism provides energy for rapid proliferation, and certain genes related to lipid metabolism encode important components of tumor signaling pathways. In this study, we analyzed pancreatic cancer datasets from The Cancer Genome Atlas and searched for prognostic genes related to lipid metabolism in the Molecular Signature Database. A risk score model was built and verified using the GSE57495 dataset and International Cancer Genome Consortium dataset. Four molecular subtypes and 4249 differentially expressed genes (DEGs) were identified. The DEGs obtained by Weighted Gene Coexpression Network Construction analysis were intersected with 4249 DEGs to obtain a total of 1340 DEGs. The final prognosis model included CA8, CEP55, GNB3 and SGSM2, and these had a significant effect on overall survival. The area under the curve at 1, 3 and 5 years was 0.72, 0.79 and 0.87, respectively. These same results were obtained using the validation cohort. Survival analysis data showed that the model could stratify the prognosis of patients with different clinical characteristics, and the model has clinical independence. Functional analysis indicated that the model is associated with multiple cancer‐related pathways. Compared with published models, our model has a higher C‐index and greater risk value. In summary, this four‐gene signature is an independent risk factor for pancreatic cancer survival and may be an effective prognostic indicator., Abnormal lipid metabolism is closely related to the malignant biological behavior of tumor cells. In this study, we analyzed pancreatic cancer datasets from The Cancer Genome Atlas and searched for prognostic genes related to lipid metabolism in the Molecular Signature Database. Compared with published models, our model has a higher C‐index and greater risk value. This four‐gene signature is an independent risk factor for pancreatic cancer survival and may be an effective prognostic indicator.
- Published
- 2021