PTEN and hepatocellular carcinoma: miRNA enrichment analysis showed that HCC cells carried miRNAs, with a concentration of miRNAs acting on active pathways such as PI3K/AKT, PTEN, and cellular senescence (Figure 5D), which suggests that BaP regulates the tumor microenvironment and influences the cellular state through exosomes, thus providing the basis for tumor cell metastasis.