Xubin Dong1, Shihui Lv1, Xiaohua Zhang2, Rutian Hao3. 1. Department of Thyroid & Breast Surgery, The First Affiliated Hospital of Wenzhou Medical University, #1 Nan Bai Xiang Street, Wenzhou 325006, China. 2. Department of Thyroid & Breast Surgery, The First Affiliated Hospital of Wenzhou Medical University, #1 Nan Bai Xiang Street, Wenzhou 325006, China. Electronic address: prof.zhang.oncology@gmail.com. 3. Department of Thyroid & Breast Surgery, The First Affiliated Hospital of Wenzhou Medical University, #1 Nan Bai Xiang Street, Wenzhou 325006, China. Electronic address: dr.hao.oncology@gmail.com.
Abstract
BACKGROUND: Colorectal cancer (CRC) is the primary cause of cancer-related deaths worldwide. Identification of new CRC biomarkers is imperative to improve the prognosis and development of therapies against the disease. LAGE3 (L Antigen Family Member 3) functions as a tRNA modifier, although its potential role in CRC has not been fully elucidated. METHODS: RNA-seq matrix and corresponding clinical information were downloaded from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases, then subjected to survival, enrichment, and tumor microenvironment analyses using packages implemented in R. RESULTS: We found that LAGE3 was upregulated and significantly correlating with poor prognosis in multiple CRC cohorts. Additionally, multivariate Cox regression analysis revealed that LAGE3 was an independent prognostic factor in patients with CRC, whereas functional enrichment analysis indicated that it could regulate protein targeting, tRNA processing, and the PD-1/PD-L1 checkpoint pathway. Furthermore, CIBERSORT analysis indicated a negative relationship between LAGE3 and levels of infiltration for multiple immune cells, especially CD8 + T cells in CRC. Particularly, LAGE3 expression was inversely correlated with the expression of immune checkpoints as well as that of various immune cell types of signature genes. CONCLUSION: Collectively, our results indicate that high LAGE3 expression correlates with adverse prognosis and poor immune infiltration in CRC patients.
BACKGROUND:Colorectal cancer (CRC) is the primary cause of cancer-related deaths worldwide. Identification of new CRC biomarkers is imperative to improve the prognosis and development of therapies against the disease. LAGE3 (L Antigen Family Member 3) functions as a tRNA modifier, although its potential role in CRC has not been fully elucidated. METHODS: RNA-seq matrix and corresponding clinical information were downloaded from The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) databases, then subjected to survival, enrichment, and tumor microenvironment analyses using packages implemented in R. RESULTS: We found that LAGE3 was upregulated and significantly correlating with poor prognosis in multiple CRC cohorts. Additionally, multivariate Cox regression analysis revealed that LAGE3 was an independent prognostic factor in patients with CRC, whereas functional enrichment analysis indicated that it could regulate protein targeting, tRNA processing, and the PD-1/PD-L1 checkpoint pathway. Furthermore, CIBERSORT analysis indicated a negative relationship between LAGE3 and levels of infiltration for multiple immune cells, especially CD8 + T cells in CRC. Particularly, LAGE3 expression was inversely correlated with the expression of immune checkpoints as well as that of various immune cell types of signature genes. CONCLUSION: Collectively, our results indicate that high LAGE3 expression correlates with adverse prognosis and poor immune infiltration in CRC patients.