2023
Chemiexcited Neurotransmitters and Hormones Create DNA Photoproducts in the Dark
Gonçalves L, Angelé-Martínez C, Premi S, Palmatier M, Prado F, Di Mascio P, Bastos E, Brash D. Chemiexcited Neurotransmitters and Hormones Create DNA Photoproducts in the Dark. ACS Chemical Biology 2023, 18: 484-493. PMID: 36775999, PMCID: PMC10276651, DOI: 10.1021/acschembio.2c00787.Peer-Reviewed Original ResearchConceptsSinglet molecular oxygenOxidation of serotoninMolecular oxygenElectron excitationTriplet stateAdjacent pyrimidine basesAbsence of lightEnergy transferDark processPyrimidine basesSkin pigment melaninBiochemical reactionsMoleculesEnergy levelsCatecholamine neurotransmittersBiomoleculesCycloadditionUltravioletMammalian metabolismCyclobutane pyrimidine dimersOxidationAminesPigment melaninRadicalsPeroxynitrite
2015
Chemiexcitation of melanin derivatives induces DNA photoproducts long after UV exposure
Premi S, Wallisch S, Mano CM, Weiner AB, Bacchiocchi A, Wakamatsu K, Bechara EJ, Halaban R, Douki T, Brash DE. Chemiexcitation of melanin derivatives induces DNA photoproducts long after UV exposure. Science 2015, 347: 842-847. PMID: 25700512, PMCID: PMC4432913, DOI: 10.1126/science.1256022.Peer-Reviewed Original ResearchConceptsDark cyclobutane pyrimidine dimersExcited electronic statesUltraviolet photonsUV photonsElectronic statesTriplet stateSunlight-induced melanomaCytosine-containing cyclobutane pyrimidine dimersEnergy transferPhotonsPicosecondsElectronsUV exposureRadiationChemiexcitationEnergyStatePhotoproducts