搜索
ExerciseforWeek12CellRepairMachinesUsingdrugsandsurgery,doctorscanonlyencouragetissuestorepairthemselves.Withmolecularmachines,therewillbemoredirectrepairs.Cellrepairwillusethesametasksthatlivingsystemsalreadyprovepossible.Accesstocellsispossiblebecausebiologistscaninsertneedlesintocellswithoutkillingthem.Thusmolecularmachinesarecapableofenteringthecell.Also,allspecificbiochemicalinteractionsshowthatmolecularsystemscanrecognizeothermoleculesbytouch,buildorrebuildeverymoleculeinacell,andcandisassembledamagedmolecules.Finally,theself-replicationofcellsprovesthatmolecularsystemscanassembleeverysystemfoundinacell.Therefore,sincenaturehasdemonstratedthebasicoperationsneededtoperformmolecular-levelcellrepair,inthefuture,nano-machinebasedsystemswillbebuiltthatareabletoentercells,sensedifferencesfromhealthyonesandmakemodificationstothestructure.Thehealth-carepossibilitiesofthesecellrepairmachinesareimpressive.Comparabletothesizeofvirusesorbacteria,theircompactpartswouldallowthemtobemorecomplex.Theearlymachineswillbespecialized.Astheyopenandclosecellmembranesortravelthroughtissueandentercellsorviruses,machineswillonlybeabletocorrectasinglemoleculardisorderlikeDNAdamageorenzymedeficiency.Later,cellrepairmachineswillbeprogrammedwithmoreabilitieswiththehelpofadvancedAIsystem