简介：Aseriesof5-aminolevulinicacidanditsalkylestermethanesulfonateswasexploitedtophotodynamictherapy(PDT)ofhumanlymphocyticcells,U-937invitro.ThePDTefficiencyisinfluencedbytheconcentrationandincubationtime.Generally,forALAanditsalkylestermethanesulfonates,thecellsurvivalratedecreasesandtheaccumulationabilityofPpIXincreaseswiththeconcentrationandincubationtime.Wefoundthatthelongercarbonchainmethanesulfonates(C5-S,C6-S,C8-S)exhibitbetterPDTeffectthanALAmethanesulfonate.ThispossiblyprovidesapromisingroutetotheclinicalapplicationofPpIX-mediatedPDTtocancercell.
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