At present, non-small cell lung cancer has a high morbidity and mortality, and the recurrence and metastasis situation is serious. It is impossible to accurately predict the prognosis of cancer patients clinically. Biomarker is a kind of biomolecule with wide application prospects, and its potential in cancer prognosis is gradually revealed, and it is expected to be applied clinically.
We integrated four gene expression profiles (GSE19188, GSE19804, GSE101929 and GSE18842) from the GEO database and screened the commonly differentially expressed genes using the GEO2R online tool. We screened 952 commonly differentially expressed genes. Gene ontology analysis showed that CDEGs were mainly enriched in biological processes such as cell adherin, angiogenesis and positive regulation of angiogenesis, and KEGG pathways such as ECM-receptor interaction and cell adherin molecules (CAMs). Up-regulation of G2 and S phase-expressed protein 1(GTSE1) expression is associated with poor prognosis of lung adenocarcinoma(LADE) and lung squamous cell carcinoma(LUSC). Up-regulation of Neuromedin-U(NMU) expression, down-regulation of Proto-oncogene c-Fos(FOS) and Cyclin-dependent kinase inhibitor 1C(CDKN1C) is only associated with poor prognosis of LADE.
We believe that GTSE1, NMU, FOS, and CDKN1C have potential application value as prognostic markers for lung adenocarcinoma, and are of great significance for lung adeno carcinoma efficacy evaluation and relapse monitoring. At the same time, GTSE1 may also be used as a new target for cancer treatment New ways.