Abstract
We aimed to explore the effect of CD39 expression on CD8(+) T cells and on the diagnosis and prognosis of esophageal squamous cell carcinoma (ESCC). The independent prognostic factors for the surgical specimens of the 95 ESCC patients were screened by multivariate Cox regression analysis. Differential gene expression analysis was performed by the NetworkAnalyst platform based on data from the Gene Expression Omnibus (GEO). The expression of CD39 on CD8(+) T cells in the CK(+) region was higher in cancer tissue than in paracancerous tissue (p = 0.011), and high CD39-expressing CD8(+) T cells in the CK(+) region (HR, 2.587; p = 0.033) and high CD39-expressing CD8(+) T cells in the CK(-) region (HR, 3.090; p = 0.008) were independent risk factors for prognosis in ESCC patients; the expression of ENTPD1 was upregulated in ESCC tissues compared to normal tissues (adjusted p < 0.001; log(2) fold change = 1.99), and its expression was significantly positively correlated with the expression of PDCD1, CTLA4, and HAVCR2. High CD39-expressing CD8(+) T cells can be used as a new molecular marker for the diagnosis and prognosis of ESCC, and the restoration of partially exhausted CD8(+) T cells by inhibiting CD39 may be a new strategy for treating ESCC.