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电喷雾离子化技术的发明人、美国科学家johnfenn2002年度诺贝尔化学奖约翰·芬恩:1917年出生于美国纽约市,1940年获耶鲁大学化学博士学位,1967年到1987年间任该大学教授,1987年起被聘为该大学名誉教授,自1994年起任弗吉尼亚联邦大学教授。
MARGARETWARNER:Thisyear''''sNobelPrizeinchemistrywenttothreescientists:KurtWuethrichofSwitzerland;KoichiTanakaofJapan;andanAmerican,JohnFenn.TheNobelCommitteecitedthemfordevelopingwaysofidentifyingandanalyzinglargemolecules,likeproteins.Thenewmethods,theNobelCommitteesaid,"haverevolutionizedthedevelopmentofnewpharmaceuticals,"andholdpromiseforearlydetectionofbreastandprostatecancer.WithusnowistheAmericanwinner,JohnFenn,whowillsharethe$1millionprizewiththeotherwinners.At85,he''''scurrentlyaresearchprofessorofchemistryandengineeringatVirginiaCommonwealthUniversityinRichmond.
Welcome,ProfessorFenn,andcongratulations.
JOHNB.FENN,NobelPrizeforChemistry:Thanksverymuch.
MARGARETWARNER:Howdidyouhearthenews?Wereyousurprised?
JOHNB.FENN:Thetraditionaltelephonecallat5:30thismorning.Mywifepickedupthephoneandshecameandholleredtome,"Stockholmiscalling!"So...IhadwatchedtheprogramthatyouhaveyesterdayandknewthatthephysicistshadgottentheirNobelPrize,andsoStockholmcallingatthistimeofyearcouldhavemeantonlyonething.That''''swhatitwas.I''''mstillinastateofshock.
MARGARETWARNER:I''''mgladwehelpedprepareyou.Thecommittee,aswejustsaid,citedyouandtheotherwinnersforyourworkindevelopingnewwaysofweighingmoleculesofproteins.Tellusinlayman''''stermswhyisitimportanttobeabletoweightheseproteins,thesemolecules?
JOHNB.FENN:Well,theweightormassofaproteinmoleculeisaveryimportantcharacteristicofitsidentity.Sogettingtheirmassisthefirststeptowardidentifyingthem.
MARGARETWARNER:Andsowhatisitaboutyourmethodthatyoudevelopedthataddedsomethingnew?Whatdidyourwork...whatdoesyourworkenableresearcherstodotheyweren''''tabletodobefore?
JOHNB.FENN:Well,inhomelyterms,welearnedhowtomakeelephantsfly,asitwere.Thesehugebigmoleculescannotbeputintothegasphaseasvaporsorgaseswithoutcatastrophicdecomposition.Ifyou''''veevertriedtodistillaneggoutofafryingpan,youknowyoucan''''tdoit.Itjustdecomposesincarbon.Sobytrickingthem,weareabletogetthemintothegasphaseandthenintothevacuum.Oncewegetthemintothevacuumwithchargesonthem,wecanusetheveryoldartofmassspectrometryofdeterminingtheirmasses.Andhavingdeterminedtheirmasses,wecantakethenextstepandbringaboutcollisionsandbreakthemupintotheircomponentpieces,usuallyshortpiecesofproteinorevenasfardownastheaminoacidsofwhichallproteinsarecompromised.Soyouaccumulateallthisinformationandrefertogreatlibrariesofinformation,andwecanidentifyalmostanymoleculeratherquickly.
MARGARET世界秘书网版权所有WARNER:Sohowdidthislead,astheNobelCommitteesaid,torevolutionarydevelopmentsinnewmedicines,innewpharmaceuticals?
JOHNB.FENN:Well,inanew...inanynewmedicine...forexampleasyouknowtheFoodandDrugAdministrationrequireslengthytrialsinwhichanimalsandhumanbeingsaregiventhemedicine,andthentheyhavetodeterminewhathappenstothebodywhenthesemedicinesaretaken.Andsotherearegreatbatteriesoftests,analyticalprocedures,analyzingallthebodyfluids--blood,saliva,urine--andseeingwhatthemetabolitesofthesedrugsare--thatis,thepiecesthatthebodymakesoutofthemwhentheyoperateonthemintheirvariouschemicalprocesses.Andthenwehavetoseehowlongthesemetabolitesstayinthebody,whatittakesforthebodytogetridofthem,andhowcompletelythebodygetsridofthem,andsoallofthesestepsrequirefairlyintricateanalyses.Itjustsohappensthatthisso-calledelectrospraymassspectrometrygreatlyspeedsupandincreasestheaccuracyoftheseanalyses,andsomostoftheworkusingthistechniqueisbeingusedindrugcompaniestoday.
MARGARETWARNER:Andthenhowwillyourmethodcontributetofightingcancerordetecting...earlydetectionofcancer?
JOHNB.FENN:Well,whenthebodyhasacancerousgrowthsomewhere,therearefrequentlyparticularchemicalsthatareassociatedwiththatbodywhichgetreleasedintothebloodstream.Andsoifonehasasensitiveenoughmethodofanalysis,onecansometimessaysomewhereinthebodythereisacancerbecauseweseethisparticularcompound.
MARGARETWARNER:Howdidyougetinterestedinchemistrytostartwith?
JOHNB.FENN:Well,tostartwith,IhadawonderfulteacherwhenIwasafreshmanincollegeandtookhischemistrycourse.Andhemadethesubjectlive.Andso,Igotbitten.
MARGARETWARNER:Thenhaveyoualwaysfoundtheresearchendofitfascinating?
JOHNB.FENN:Asamatteroffact,no.TheresearchIdidformydegreeingraduateschoolwasverydull,andIwantednopartofit.ButIwentandworkedinindustryforafewyears,andthenforavarietyofreasonsgotbackintoacademia,andbythattime,IhadmoreinterestingproblemstoworkonthanIhadformyPh.D.thesis,andithasbeenlotsoffunandexcitementeversince.
MARGARETWARNER:Andatage85,youarestilldoingresearchandteachingresearch.
JOHNB.FENN:Well,putitthisway--Igotothelabeveryday.WhetherIaccomplishmuchinthewayofresearch,Idon''''tknow.Butweareworkingonproblems,andItrytoencouragestudentstolookatthisorlookatthatorlookattheotherthing,andIgetalotofnourishmentfromtheiryoungredbloodcells.I''''mavampire,essentially.
MARGARETWARNER:Andwillwinningthisprizechangeyourlifeinanyway?
JOHNB.FENN:Italreadychangedit.I''''vebeenonthetelephonealldaylong.Idon''''tknow.Imean,I''''veneverbeenthroughthisbefore,butIguessitwill.
MARGARETWARNER:Andhaveyoudecidedonwhatyou''''regoingtodowithyourprizewinnings?
JOHNB.FENN:No,theonlythingIknowI''''mgoingtogodo,theonlythingIamgoingtodoispayincometaxonit.ButwhatI''''lldoafterthetaxispaid,Ihavenoidea.I''''venotthoughtaboutityet.I''''vegotplentyoftimebeforeIhaveitinmypocketanyway.
MARGAR世界秘书网版权所有ETWARNER:ProfessorFenn,thankyousomuchandagain,congratulations.
JOHNB.FENN:Wellthankyouverymuch.