Lycopene and apo-10′-lycopenal do not alter DNA methylation of GSTP1 in LNCaP cells

► The GSTP1 promoter is hypermethylated in over 90% of prostate cancer cases. ► The epigenetic effects of lycopene on prostate cancer have not been previously reported. ► Neither lycopene nor its putative metabolite, apo-10′-lycopenal, altered DNA methylation of GSTP1 in LNCaP cells.