4.2 Article

Prognostic Significance of the Hsp70 Gene Family in Colorectal Cancer

Journal

MEDICAL SCIENCE MONITOR
Volume 27, Issue -, Pages -

Publisher

INT SCIENTIFIC INFORMATION, INC
DOI: 10.12659/MSM.928352

Keywords

Colorectal Neoplasms, Hereditary Nonpolyposis; HSP70 Heat-Shock Proteins; Prognosis; Survival Analysis

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Low expression levels of HSPA1A, HSPA1B, and HSPA1L were found to be correlated with improved overall survival in patients with CRC. Joint low expression levels of these genes were associated with improved OS. A nomogram model based on HSPA1A, HSPA1B, HSPA1L, and tumor stage was able to predict the survival rates of CRC patients.
Background: Colorectal cancer (CRC) is a deadly form of cancer worldwide. Heat shock protein 70 (Hsp70) belongs to the family of human HSPs and plays an essential role in multiple cellular developments and in responding to environmental changes. However, studies on the relationship between CRC and the Hsp70 family are rare. Material/Methods: Data pertaining to 438 patients with CRC was downloaded from The Cancer Genome Atlas database. To investigate the prognostic significance of the Hsp70 genes, survival and joint-effect analyses were conducted. The correlation between prognosis-related Hsp70 genes and clinical factors in CRC was analyzed using a nomogram. Gene set enrichment analysis (GSEA) was performed to explore the complex enrichment pathway in CRC with the prognosis-related Hsp70 genes. Results: According to multivariate Cox regression survival analysis, low expression levels of HSPA1A, HSPA1B, and HSPA1L were correlated with improved overall survival (OS). According to the joint-effects survival analysis, the joint low expression levels of HSPA1A, HSPA1B, and HSPA1L were related to improved OS. The 1-, 3-, 5-, and 10-year survival rates of patients with CRC were predicted by constructing a nomogram model based on HSPA1A, HSPA1B, HSPA1L, and tumor stage. The GSEA results indicated the biological roles of HSPA1A, HSPA1B, and HSPA1L in CRC. Conclusions: Low expression levels of HSPA1A, HSPA1B, and HSPA1L were strongly correlated with improved prognosis in CRC and might serve as latent prognostic biomarkers in CRC.

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