Identification and Validation of TYMS as a Potential Biomarker for Risk of Metastasis Development in Hepatocellular Carcinoma

Metastasis is the major cause of hepatocellular carcinoma (HCC) mortality. Unfortunately, there are few reports on effective biomarkers for HCC metastasis. This study aimed to discover potential key genes of HCC, which could provide new insights for HCC metastasis. GEO (Gene Expression Omnibus) micr...

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Vydané v:Frontiers in oncology Ročník 11; s. 762821
Hlavní autori: Li, Shuai, Zhao, Jingyuan, Lv, Linlin, Dong, Deshi
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Frontiers Media S.A 09.11.2021
Predmet:
bioinformatics
hepatocellular carcinoma
metastasis
Oncology
prognostic biomarker
TYMS
ISSN:2234-943X, 2234-943X
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Shrnutí:Metastasis is the major cause of hepatocellular carcinoma (HCC) mortality. Unfortunately, there are few reports on effective biomarkers for HCC metastasis. This study aimed to discover potential key genes of HCC, which could provide new insights for HCC metastasis. GEO (Gene Expression Omnibus) microarray and TCGA (The Cancer Genome Atlas) datasets were integrated to screen for candidate genes involved in HCC metastasis. Differentially expressed genes (DEGs) were screened, and then we performed enrichment analysis of Gene Ontology (GO), together with Kyoto Encyclopedia of Genes and Genomes (KEGG). A protein-protein interaction network was then built and analyzed utilizing STRING and Cytoscape, followed by the identification of 10 hub genes by cytoHubba. Four genes were associated with survival, their prognostic value was verified by prognostic signature analysis. Thymidylate synthase (TYMS) gene was identified as significant HCC metastasis-associated genes after mRNA expression validation and IHC analysis. TYMS silencing in HCC cells remarkedly inhibited growth and invasion. Finally, we found TYMS silencing dramatically decrease DNA synthesis and extracellular matrix (ECM) degradation, resulting in the inhibition of HCC metastasis, indicating TYMS had close associations with HCC development. These findings provided new insights into HCC metastasis and identified candidate gene prognosis signatures for HCC metastasis.
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Edited by: Hongda Liu, Nanjing Medical University, China
Reviewed by: Wei Cao, Shanghai Jiao Tong University, China; Limin Xia, Huazhong University of Science and Technology, China
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.2021.762821