meso-tetra-4-pyridyl porphine

meso-tetra-4-pyridyl porphine (MTP) is a synthetic porphyrin derivative that serves as a photosensitizer in photodynamic therapy (PDT). It is characterized by its ability to non-covalently assemble with single-stranded DNA (ssDNA) to form stable, nano-sized complexes (PDN) under physiological conditions. These complexes are designed for pH-dependent release, dissociating in acidic environments such as the endosomal compartments of cancer cells (pH ~5.1) where the pyridyl nitrogens of MTP become protonated. Upon exposure to light, MTP generates reactive oxygen species (ROS), which induce localized membrane damage and lipid peroxidation, leading to cell death. Research conducted at Wake Forest University has demonstrated that MTP-DNA complexes exhibit significant anti-tumor activity in bladder cancer xenograft models, suggesting potential applications in targeted cancer treatment and drug delivery.

Other names

meso-tetra(4-pyridyl)porphyrinT4PyPT-4PyPT 4PyP5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine