简介:<正>Fasligand(FasL)wasfirstdescribedfunctionallyasaninduciblecellsurfacemoleculeusedbycytotoxicTcellstoinduceapoptoticcelldeathintumorcellsandactivatedlymphocytes.WiththeidentificationofFasastheIprgeneproduct,FasLbecamerecognizedasamoleculeinvolvedindown-regulationoftheimmunesystem.WhileFasLcanbeusedtoefficientlykillFas-expressingtumorcellsaswellasactivatedTandBlymphocytesinvitro,attemptstouseFasLtherapeuticallytotreatcancerortopreventtransplant