SP1 and cervical cancer: Furthermore, Ma et al. identified the putative zinc transporter gene LIV1 as a key gene in the context of trichostatin A-mediated cervical cancer cell apoptosis induction [36], while Raju et al. demonstrated that trichostatin A robustly induces Kallikrein-related peptidase 7 (KLK7) mRNA expression and increases occupancy of specificity protein 1 (Sp1) at the proximal KLK7 promoter in HeLa cells [37].