2023
Chemiexcitation and melanin in photoreceptor disc turnover and prevention of macular degeneration
Lyu Y, Tschulakow A, Wang K, Brash D, Schraermeyer U. Chemiexcitation and melanin in photoreceptor disc turnover and prevention of macular degeneration. Proceedings Of The National Academy Of Sciences Of The United States Of America 2023, 120: e2216935120. PMID: 37155898, PMCID: PMC10194005, DOI: 10.1073/pnas.2216935120.Peer-Reviewed Original ResearchConceptsRetinal pigment epitheliumIntravitreal injectionMacular degenerationMelanolipofuscin granulesLipofuscin accumulationAge-related macular degenerationAlbino micePigmented miceMouse modelStargardt diseasePigment epitheliumRetinal pathologyRetinal degenerationNitric oxideDegenerationMiceLipofuscinPigment lipofuscinPhotoreceptor disksAlbinoAccelerated accumulationInjectionDiseasePathologyChemiexcited 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 melaninRadicalsPeroxynitriteChemiexcitation: Mammalian Photochemistry in the Dark†
Brash D, Goncalves L. Chemiexcitation: Mammalian Photochemistry in the Dark†. Photochemistry And Photobiology 2023, 99: 251-276. PMID: 36681894, PMCID: PMC10065968, DOI: 10.1111/php.13781.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsExcited statesMammalian cellsCyclobutane pyrimidine dimersEvolutionary selectionBond rearrangementUnoccupied orbitalsGround stateReaction productsPyrimidine dimersChemiexcitationRecent findingsBiologyPathogenic eventsRadicalsUltraviolet lightMoleculesDrug-induced deafnessPotential pathogenesisCellsMelaninAchilles heelMammalsBiomoleculesPhotochemistryDNA
2020
Bruce Nathan Ames - Paradigm shifts inside the cancer research revolution
Smith CJ, Perfetti TA, Berry SC, Brash DE, Bus J, Calabrese E, Clemens RA, Fowle JRJ, Greim H, MacGregor JT, Maronpot R, Pressman P, Zeiger E, Hayes AW. Bruce Nathan Ames - Paradigm shifts inside the cancer research revolution. Mutation Research/Reviews In Mutation Research 2020, 787: 108363. PMID: 34083041, DOI: 10.1016/j.mrrev.2020.108363.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus Statements
2019
Acetyl zingerone: An efficacious multifunctional ingredient for continued protection against ongoing DNA damage in melanocytes after sun exposure ends
Chaudhuri RK, Meyer T, Premi S, Brash D. Acetyl zingerone: An efficacious multifunctional ingredient for continued protection against ongoing DNA damage in melanocytes after sun exposure ends. International Journal Of Cosmetic Science 2019, 42: 36-45. PMID: 31538664, PMCID: PMC7004018, DOI: 10.1111/ics.12582.Peer-Reviewed Original ResearchConceptsSun exposureSolar-simulated ultraviolet radiationReactive oxygen speciesIntracellular levelsCyclobutane pyrimidine dimersΑ-tocopherolCPD formationTraditional sunscreensScavenge peroxynitriteUVR exposureOngoing DNA damageAntioxidant α-tocopherolUltraviolet radiationUVA radiationMelanocytesROS formationExposureQuench singlet oxygenUse of AZEfficacyOxygen speciesKeratinocytesDNA damageFree radicalsHoursA call for a better understanding of causation in cell biology
Bizzarri M, Brash DE, Briscoe J, Grieneisen VA, Stern CD, Levin M. A call for a better understanding of causation in cell biology. Nature Reviews Molecular Cell Biology 2019, 20: 261-262. PMID: 30962573, DOI: 10.1038/s41580-019-0127-1.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsAccelerating cancer without mutations
Brash DE. Accelerating cancer without mutations. ELife 2019, 8: e45809. PMID: 30895924, PMCID: PMC6428566, DOI: 10.7554/elife.45809.Commentaries, Editorials and Letters
2018
Chemiexcitation and Its Implications for Disease
Brash DE, Goncalves LCP, Bechara EJH, Group T. Chemiexcitation and Its Implications for Disease. Trends In Molecular Medicine 2018, 24: 527-541. PMID: 29751974, PMCID: PMC5975183, DOI: 10.1016/j.molmed.2018.04.004.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsHigh-energy processesQuantum mechanicsMolecular orbitalsTransfer energyHighest energy molecular orbitalChemiexcitationUltraviolet lightMutagenic cyclobutane pyrimidine dimersNumerous human diseasesPhotonsElectronsCyclobutane pyrimidine dimersOrbitalsHuman diseasesUpstream eventsPigment melaninEnergy
2017
Fluorouracil Enhances Photodynamic Therapy of Squamous Cell Carcinoma via a p53-Independent Mechanism that Increases Protoporphyrin IX levels and Tumor Cell Death
Anand S, Rollakanti KR, Brankov N, Brash DE, Hasan T, Maytin EV. Fluorouracil Enhances Photodynamic Therapy of Squamous Cell Carcinoma via a p53-Independent Mechanism that Increases Protoporphyrin IX levels and Tumor Cell Death. Molecular Cancer Therapeutics 2017, 16: 1092-1101. PMID: 28336806, PMCID: PMC5497500, DOI: 10.1158/1535-7163.mct-16-0608.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBiosynthetic PathwaysCarcinoma, Squamous CellCell DeathCell Line, TumorCell ProliferationCombined Modality TherapyDisease Models, AnimalFluorouracilGene Expression Regulation, EnzymologicGene Expression Regulation, NeoplasticHemeHumansMicePhotochemotherapyProtoporphyrinsTumor Suppressor Protein p53Xenograft Model Antitumor AssaysConceptsSquamous cell carcinomaActinic keratosesPhotodynamic therapyP53-null tumorsNew therapeutic approachesMol Cancer TherCell deathCell carcinomaTherapeutic responsePpIX levelsTherapeutic approachesMouse modelSkin cancerSCC precursorsHeme synthesis pathwayTumorsKeratosesDeathP53PDT efficacyInductionPretreatmentNeoadjuvantCombination approachSurgery
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
2014
Enhancing the detection of barcoded reads in high throughput DNA sequencing data by controlling the false discovery rate
Buschmann T, Zhang R, Brash DE, Bystrykh LV. Enhancing the detection of barcoded reads in high throughput DNA sequencing data by controlling the false discovery rate. BMC Bioinformatics 2014, 15: 264. PMID: 25099007, PMCID: PMC4133078, DOI: 10.1186/1471-2105-15-264.Peer-Reviewed Original Research
2013
Clonal growth of human melanocytes using cell‐free extracellular matrix
Zhang R, Premi S, Kilic SS, Bacchiocchi A, Halaban R, Brash DE. Clonal growth of human melanocytes using cell‐free extracellular matrix. Pigment Cell & Melanoma Research 2013, 26: 925-927. PMID: 24034857, PMCID: PMC4086752, DOI: 10.1111/pcmr.12159.Peer-Reviewed Original Research
2009
Stochastic fate of p53-mutant epidermal progenitor cells is tilted toward proliferation by UV B during preneoplasia
Klein AM, Brash DE, Jones PH, Simons BD. Stochastic fate of p53-mutant epidermal progenitor cells is tilted toward proliferation by UV B during preneoplasia. Proceedings Of The National Academy Of Sciences Of The United States Of America 2009, 107: 270-275. PMID: 20018764, PMCID: PMC2806764, DOI: 10.1073/pnas.0909738107.Peer-Reviewed Original ResearchConceptsP53 mutationsNonmelanoma skin cancer incidenceSame cumulative doseSkin cancer incidenceUVB radiationUV-irradiated epidermisP53 tumor suppressor geneP53-mutant clonesCumulative doseCancer incidenceP53 mutant cellsHigh-intensity exposureMurine epidermisPreneoplastic clonesTumor suppressor geneProgenitor cellsExposure resultsPrecancerous cellsPreneoplastic cellsHuman epidermisB radiationClones of cellsThe mysterious steps in carcinogenesis: addendum
Brash D, Cairns J. The mysterious steps in carcinogenesis: addendum. British Journal Of Cancer 2009, 101: 1490-1490. PMID: 19826429, PMCID: PMC2768438, DOI: 10.1038/sj.bjc.6605332.Commentaries, Editorials and LettersThe mysterious steps in carcinogenesis
Brash D, Cairns J. The mysterious steps in carcinogenesis. British Journal Of Cancer 2009, 101: 379-380. PMID: 19638985, PMCID: PMC2720245, DOI: 10.1038/sj.bjc.6605171.Commentaries, Editorials and Letters
2008
Preneoplastic lesion growth driven by the death of adjacent normal stem cells
Chao DL, Eck JT, Brash DE, Maley CC, Luebeck EG. Preneoplastic lesion growth driven by the death of adjacent normal stem cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 2008, 105: 15034-15039. PMID: 18815380, PMCID: PMC2567488, DOI: 10.1073/pnas.0802211105.Peer-Reviewed Original ResearchConceptsNormal stem cellsStem cellsClonal expansionCell replicationMutant cellsNormal cell replicationMutant clonesProliferative advantageDorsal epidermisCell mutationTissue architectureClonesClone growthBiological observationsCell killingApoptosis rateReplicationMutationsGrowth rateCellsGrowthNormal territoriesApoptosisExponential growth modelImportant step
2007
Bcl-2 is the target of a UV-inducible apoptosis switch and a node for UV signaling
Knezevic D, Zhang W, Rochette PJ, Brash DE. Bcl-2 is the target of a UV-inducible apoptosis switch and a node for UV signaling. Proceedings Of The National Academy Of Sciences Of The United States Of America 2007, 104: 11286-11291. PMID: 17586682, PMCID: PMC2040891, DOI: 10.1073/pnas.0701318104.Peer-Reviewed Original Research
2006
Keratinocyte Apoptosis in Epidermal Development and Disease
Raj D, Brash DE, Grossman D. Keratinocyte Apoptosis in Epidermal Development and Disease. Journal Of Investigative Dermatology 2006, 126: 243-257. PMID: 16418733, PMCID: PMC2291295, DOI: 10.1038/sj.jid.5700008.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsEpidermal developmentNormal developmental programPre-malignant cellsDevelopmental programApoptosis controlMolecular mechanismsKeratinocyte apoptosisDysfunctional apoptosisKC apoptosisApoptosisCritical roleComplex roleNew insightsCorneum formationMouse modelCarcinogenesisSkin carcinogenesisPathwayRoleProliferationCells
2005
Knockdown of p53 levels in human keratinocytes accelerates Mcl-1 and Bcl-xL reduction thereby enhancing UV-light induced apoptosis
Chaturvedi V, Sitailo LA, Qin JZ, Bodner B, Denning MF, Curry J, Zhang W, Brash D, Nickoloff BJ. Knockdown of p53 levels in human keratinocytes accelerates Mcl-1 and Bcl-xL reduction thereby enhancing UV-light induced apoptosis. Oncogene 2005, 24: 5299-5312. PMID: 15940268, DOI: 10.1038/sj.onc.1208650.Peer-Reviewed Original ResearchConceptsMouse modelP53 levelsP53 siRNAHuman keratinocytesMcl-1Skin cancer developmentKnockout mouse modelP53 tumor suppressor geneCultured human keratinocytesBcl-xL antiapoptotic proteinBcl-xL levelsCommon causeParadoxical responseSkin cancerAccelerated eliminationUltraviolet light exposureWild-type p53Cancer developmentTumor suppressor geneUV-induced DNA damageEpidermal responseE2F-1 levelsPrimary culturesSiRNA-based approachAbnormal cellsColonization of adjacent stem cell compartments by mutant keratinocytes
Brash DE, Zhang W, Grossman D, Takeuchi S. Colonization of adjacent stem cell compartments by mutant keratinocytes. Seminars In Cancer Biology 2005, 15: 97-102. PMID: 15652454, DOI: 10.1016/j.semcancer.2004.08.006.ChaptersConceptsStem cell compartmentMutant stem cellsCell compartmentStem cellsDNA-damaged cellsNon-mutational mechanismsMutant cellsAdditional genesClonal expansionSelection pressureP53 mutant cellsUVB-induced apoptosisMutant keratinocytesCancer developmentCompartmentsCellsAbsence of escapeKeratinocyte clonesAdditional territoryClinical phenotypeAdjacent compartmentsGenesMechanismClonesPhenotype