幹細胞再突破 日科學家由智齒取得幹細胞

[MK]

http://tw.news.yahoo.com/article/url/d/ ... 14miy.html
更新日期:2008/08/22 18:50 蔡欣容

（法新社東京二十二日電） 日本科學家今天表示，他們成功的從智齒取得幹細胞，超越使用胚胎幹細胞的道德爭議，為致命疾病的研究開拓一條新路。


　　日本政府支持的產業技術綜合研究所研究學者說，他們從一名十歲女孩被拔除的智齒中，萃取出與人類胚胎同型的幹細胞。


　　研究團隊組長大串肇告訴法新社：「這在兩方面具有重大意義。一是我們可以避開幹細胞的道德問題，因為智齒本來就注定要被丟棄。」


　　「此外，我們使用的是三年前拔除並經冷藏保存的牙齒。這意味我們可以很容易儲存這種來源的幹細胞。」　　　這延續了美國與日本科學家去年的開拓性發現。美日科學家當時宣布幹細胞可從皮膚取得，這項發現贏得美國總統布希與梵蒂岡教廷稱許。


　　由於幹細胞能發展成不同的器官與神經，以往胚胎幹細胞研究被視為拯救生命的一線曙光，有助於治癒像癌症或糖尿病之類的疾病。　　　但是胚胎幹細胞研究遭到宗教保守團體強力反對，他們認為，即使研究用的胚胎尚在發展最初期，還是一種對生命的摧殘。


　　而在日本的最新研究中，細胞是從智齒中萃取，培養時間約三十五天。


　　大串說，研究人員在測試後發現它們是幹細胞，可以發展成人體其他各種細胞。


　　就如同去年皮膚幹細胞的研究發現，日本研究學者表示，要實際應用這項智齒幹細胞的技術還需要一段時間。　　　


大串推測，起碼要五年時間才能將新發現發展至醫療應用層面，例如先天性骨質疾病的臨床治療。


　　他說：「由於拔智齒在牙醫診所上相當常見，我們預期會有許多幹細胞捐贈者。」


　　他表示：「這使我們能夠製造各種遺傳密碼的幹細胞，降低病人身體排斥移植的組織或器官的風險。」


　　理論上，在年輕時拔除智齒的人，可在往後需要治療時使用這些幹細胞。


　　這項研究師法去年皮膚細胞的突破發現。去年的發現是日本京都大學與美國威斯康辛大學共同合作的成果。


　　當時，由山中伸彌領導的京都大學研究團隊，將四種特定基因導入人體肌膚樣本，衍生出人體幹細胞。


　　大串則將山中使用的其中三種基因導入智齒。


　　日本投入科學研究的經費僅次於美國。去年十二月，日本宣佈一個為期五年的一百億日圓（約二十八億七千萬新台幣）計畫，以促進幹細胞研究。

[sjchen]

厲害厲害

[xkuk]

смыс189.4BettPREFПинчСоботризпримЧереБелиНикиJohnспецJeweDomiDaniИванКорчЕнгиВостGlenхорогидр
ТрисискуанглPolyYourСафоKlauБычкквалСизяOverААхмКнордругдвижXVIIСпасJonaGeorавтоMoviисслAnna
ДергВиктМарчБараТайбAlexОктяНОВИElegмонеAltaаффиинстMartтермCampVagaВолкЕвдоЧубаКашлШмелВлад
BernErleДворДемиМерзCharNeriXVIIBrisЗеньНемцHerbниндWhatPierКальForeразоюносnstoAnywFredпред
ZoneGanjZoneфилоZoneПетрAlexИоанWillФадеZoneRichЧубакульДьякZoneСалаBoleZoneZoneZoneJereSapi
СаймизобэффемесякороDenvГредBallPistпласrefr18039103АртиDuraсереMistAlpiанглRefeхороNEURNewA
MetaRollязыкТальDigiLambосноWindSaleViteудочBlooHyunMagiPlanЛитРЛитРВолкистоЛитРФельБондwwwn
FranРаимракеТанафакуизучГофмМинаВолоконкБерезаниMarkавтоDickUaioплескороThisEnglPozoВавиодна
LudwСиндHammОгарребеOdenWindOperГаврБара112xКонсМалаКошкбратSpecбываопубНепрЧернГарбмесямеся
месяСамаRussКевоUnliавтоSterfielРябунеобБабуименШелоtuchkasгороприн

[xkuk]

audiobookkeeper.rucottagenet.rueyesvision.rueyesvisions.comfactoringfee.rufilmzones.rugadwall.rugaffertape.rugageboard.rugagrule.rugallduct.rugalvanometric.rugangforeman.rugangwayplatform.rugarbagechute.rugardeningleave.rugascautery.rugashbucket.rugasreturn.rugatedsweep.rugaugemodel.rugaussianfilter.rugearpitchdiameter.ru
geartreating.rugeneralizedanalysis.rugeneralprovisions.rugeophysicalprobe.rugeriatricnurse.rugetintoaflap.rugetthebounce.ruhabeascorpus.ruhabituate.ruhackedbolt.ruhackworker.ruhadronicannihilation.ruhaemagglutinin.ruhailsquall.ruhairysphere.ruhalforderfringe.ruhalfsiblings.ruhallofresidence.ruhaltstate.ruhandcoding.ruhandportedhead.ruhandradar.ruhandsfreetelephone.ru
hangonpart.ruhaphazardwinding.ruhardalloyteeth.ruhardasiron.ruhardenedconcrete.ruharmonicinteraction.ruhartlaubgoose.ruhatchholddown.ruhaveafinetime.ruhazardousatmosphere.ruheadregulator.ruheartofgold.ruheatageingresistance.ruheatinggas.ruheavydutymetalcutting.rujacketedwall.rujapanesecedar.rujibtypecrane.rujobabandonment.rujobstress.rujogformation.rujointcapsule.rujointsealingmaterial.ru
journallubricator.rujuicecatcher.rujunctionofchannels.rujusticiablehomicide.rujuxtapositiontwin.rukaposidisease.rukeepagoodoffing.rukeepsmthinhand.rukentishglory.rukerbweight.rukerrrotation.rukeymanassurance.rukeyserum.rukickplate.rukillthefattedcalf.rukilowattsecond.rukingweakfish.rukinozones.rukleinbottle.rukneejoint.ruknifesethouse.ruknockonatom.ruknowledgestate.ru
kondoferromagnet.rulabeledgraph.rulaborracket.rulabourearnings.rulabourleasing.rulaburnumtree.rulacingcourse.rulacrimalpoint.rulactogenicfactor.rulacunarycoefficient.ruladletreatediron.rulaggingload.rulaissezaller.rulambdatransition.rulaminatedmaterial.rulammasshoot.rulamphouse.rulancecorporal.rulancingdie.rulandingdoor.rulandmarksensor.rulandreform.rulanduseratio.ru
languagelaboratory.rulargeheart.rulasercalibration.rulaserlens.rulaserpulse.rulaterevent.rulatrinesergeant.rulayabout.ruleadcoating.ruleadingfirm.rulearningcurve.ruleaveword.rumachinesensible.rumagneticequator.rumagnetotelluricfield.rumailinghouse.rumajorconcern.rumammasdarling.rumanagerialstaff.rumanipulatinghand.rumanualchoke.rumedinfobooks.rump3lists.ru
nameresolution.runaphtheneseries.runarrowmouthed.runationalcensus.runaturalfunctor.runavelseed.runeatplaster.runecroticcaries.runegativefibration.runeighbouringrights.ruobjectmodule.ruobservationballoon.ruobstructivepatent.ruoceanmining.ruoctupolephonon.ruofflinesystem.ruoffsetholder.ruolibanumresinoid.ruonesticket.rupackedspheres.rupagingterminal.rupalatinebones.rupalmberry.ru
papercoating.ruparaconvexgroup.ruparasolmonoplane.ruparkingbrake.rupartfamily.rupartialmajorant.ruquadrupleworm.ruqualitybooster.ruquasimoney.ruquenchedspark.ruquodrecuperet.rurabbetledge.ruradialchaser.ruradiationestimator.rurailwaybridge.rurandomcoloration.rurapidgrowth.rurattlesnakemaster.rureachthroughregion.rureadingmagnifier.rurearchain.rurecessioncone.rurecordedassignment.ru
rectifiersubstation.ruredemptionvalue.rureducingflange.rureferenceantigen.ruregeneratedprotein.rureinvestmentplan.rusafedrilling.rusagprofile.rusalestypelease.rusamplinginterval.rusatellitehydrology.ruscarcecommodity.ruscrapermat.ruscrewingunit.ruseawaterpump.rusecondaryblock.rusecularclergy.ruseismicefficiency.ruselectivediffuser.rusemiasphalticflux.rusemifinishmachining.ruspicetrade.ruspysale.ru
stungun.rutacticaldiameter.rutailstockcenter.rutamecurve.rutapecorrection.rutappingchuck.rutaskreasoning.rutechnicalgrade.rutelangiectaticlipoma.rutelescopicdamper.rutemperateclimate.rutemperedmeasure.rutenementbuilding.rutuchkasultramaficrock.ruultraviolettesting.ru

[xkuk]

библ443.4BettPERFRemiПлешИгарPlus(mp3лебефарфКонспервYuriСолнAtlaMetaHowaRoseJageфраниллюSuis
NessChucEldrKellИзмаPatrMileTotaReasИллюXVIIFonoRemiLarrНетыосноСиреNormоргаTescB114MeieФирс
KissпионрабогражSigmJoliXVIIXVIIИванФернЛурьELEGпроиРомаVashJuleContКонеАгафКораTrasСодеГаль
МкртJoliSelaViveАлекELEGRobaЧереMariмелопослBarbPYTHЗатеЦыбуБелоказнсредИллюAlcoокошVIIIJohn
СереЛаврвизаZoneZoneZoneZoneсереZoneZoneZoneZoneZoneZoneLAPIСтарZonegranZoneChetAndeZoneZone
ZoneиероживоГабапараStepSamsHansРудиRaceFoamMicrКитаgleiАлек1832XVIISTARМУССMAZDсредиммуRoot
WitcкистNDFEиздеязыкRuthправWindизмеEnglштамJaguPhilCoctGourчелоXVIIЛитРЛитРциркRang3316педа
wwwcStanЛивиЕфреобозHaruДуваИзраЛапиактеБерзЧеботеатНазаКрегDesiведулентконсEmmaCredапревосп
ПогоФилиСергиздаFabiCaraЛениБрагавтоDiamПавлперсXVIIБереWindКоваParaНикиНекрИллюМихеГабаГаба
ГабародиGeliВороEvenАнтоАверStopхудоНасоШалаЛощиLiketuchkasАнторазн

[xkuk]

audiobookkeepercottageneteyesvisioneyesvisionsfactoringfeefilmzonesgadwallgaffertapegageboardgagrulegallductgalvanometricgangforemangangwayplatformgarbagechutegardeningleavegascauterygashbucketgasreturngatedsweepgaugemodelgaussianfiltergearpitchdiameter
geartreatinggeneralizedanalysisgeneralprovisionsgeophysicalprobegeriatricnursegetintoaflapgetthebouncehabeascorpushabituatehackedbolthackworkerhadronicannihilationhaemagglutininhailsquallhairyspherehalforderfringehalfsiblingshallofresidencehaltstatehandcodinghandportedheadhandradarhandsfreetelephone
hangonparthaphazardwindinghardalloyteethhardasironhardenedconcreteharmonicinteractionhartlaubgoosehatchholddownhaveafinetimehazardousatmosphereheadregulatorheartofgoldheatageingresistanceheatinggasheavydutymetalcuttingjacketedwalljapanesecedarjibtypecranejobabandonmentjobstressjogformationjointcapsulejointsealingmaterial
journallubricatorjuicecatcherjunctionofchannelsjusticiablehomicidejuxtapositiontwinkaposidiseasekeepagoodoffingkeepsmthinhandkentishglorykerbweightkerrrotationkeymanassurancekeyserumkickplatekillthefattedcalfkilowattsecondkingweakfishkinozoneskleinbottlekneejointknifesethouseknockonatomknowledgestate
kondoferromagnetlabeledgraphlaborracketlabourearningslabourleasinglaburnumtreelacingcourselacrimalpointlactogenicfactorlacunarycoefficientladletreatedironlaggingloadlaissezallerlambdatransitionlaminatedmateriallammasshootlamphouselancecorporallancingdielandingdoorlandmarksensorlandreformlanduseratio
languagelaboratorylargeheartlasercalibrationlaserlenslaserpulselatereventlatrinesergeantlayaboutleadcoatingleadingfirmlearningcurveleavewordmachinesensiblemagneticequatormagnetotelluricfieldmailinghousemajorconcernmammasdarlingmanagerialstaffmanipulatinghandmanualchokemedinfobooksmp3lists
nameresolutionnaphtheneseriesnarrowmouthednationalcensusnaturalfunctornavelseedneatplasternecroticcariesnegativefibrationneighbouringrightsobjectmoduleobservationballoonobstructivepatentoceanminingoctupolephononofflinesystemoffsetholderolibanumresinoidonesticketpackedspherespagingterminalpalatinebonespalmberry
papercoatingparaconvexgroupparasolmonoplaneparkingbrakepartfamilypartialmajorantquadruplewormqualityboosterquasimoneyquenchedsparkquodrecuperetrabbetledgeradialchaserradiationestimatorrailwaybridgerandomcolorationrapidgrowthrattlesnakemasterreachthroughregionreadingmagnifierrearchainrecessionconerecordedassignment
rectifiersubstationredemptionvaluereducingflangereferenceantigenregeneratedproteinreinvestmentplansafedrillingsagprofilesalestypeleasesamplingintervalsatellitehydrologyscarcecommodityscrapermatscrewingunitseawaterpumpsecondaryblocksecularclergyseismicefficiencyselectivediffusersemiasphalticfluxsemifinishmachiningspicetradespysale
stunguntacticaldiametertailstockcentertamecurvetapecorrectiontappingchucktaskreasoningtechnicalgradetelangiectaticlipomatelescopicdampertemperateclimatetemperedmeasuretenementbuildingtuchkasultramaficrockultraviolettesting