Background: Whether circulating tumor cells (CTCs) with prostate-specific membrane antigen (PSMA) high expression was related to the metastatic progress in prostate cancer (PCa) remains explored. This study aimed to provide evidence to elucidate this relationship via the telomerase reverse transcriptase (TERT)-based CTC detection method.
Methods: A total of 71 patients were enrolled and divided into the local PCa group (n=44) and metastatic PCa group (n=27). TERT-based CTC detection (TBCD) was used to detect CTCs. CTCs single-cell sequencing data were analyzed using gene ontology (GO) functional classification and enrichment.
Results: The mean 'TERT CTCs' number was 6.11±9.63 in the metastatic group and 4.09±3.41 in the local group. GO enrichment analysis for 77 prostate CTCs single-cell sequencing confirmed that proliferation-related terms were enriched in the PSMA-high expression group, and 27 metastasis-related gene panels also had high expression in this group. Then, PSMA antibody was applied to mark the 'TERT CTCs'. The proportion of patients with 'TERT PSMA CTCs' was positively associated with the Gleason score. Furthermore, the proportion of 'TERT PSMA CTCs' patients was 48.15% in the metastatic group, significantly higher than 22.72% in the local group.
Conclusions: This study suggested that TERT positive CTCs with high PSMA expression were associated with the PCa metastatic progress.
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