Figure 1. The key biomarkers and their related signaling pathways in prostate cancer (PrCa).
Androgen stimulates androgen receptor (AR) signalling, resulting in the induction and secretion of prostate-specific antigen (PSMA), while illustrating the enzymatic function of prostate-specific membrane antigen PSMA and its role in folate metabolism and mGluR signalling pathways. AR, androgen receptor; DHT, dihydrotestosterone; HSP, heat shock protein; ARE, androgen response elements; BRD4, bromodomain-containing protein 4; PSMA, prostate-specific membrane antigen; PSA, Prostate-specific antigen; TMPRSS2-ERG, transmembrane protease serine 2:v-ets erythroblastosis virus E26 oncogene homolog; mGluR, metabotropic glutamate receptor; PI3K, Phosphoinositide 3-kinases; AKT, Protein kinase B; mTOR, mammalian target of rapamycin; PCFT, proton-coupled folate transporter; RFC1, reduced folate carrier.