KLH-conjugated peptide dereived from sequences of all known FtsH isoforms of Arabidopsis thaliana: FtsH1 Q39102 (At1g50250), FtsH2 O80860 (At2g30950), FtsH3 Q84WU8 (At2g29080), FtsH4 O80983 (At2g26140), FtsH5 Q9FH02 (At5g42270), FtsH6 Q1PDW5 (At5g15250), FtsH7 Q9SD67 (At3g47060), FtsH8 Q8W585 (At1g06430), FtsH9 Q9FIM2 (At5g58870), FtsH10 Q8VZI8 (At1g07510), FtsH11 Q9FGM0 (At5g53170) as well as 4 FtsH isoforms of Synechocystis sp. PCC6803NP_440330.1, NP_442160.1, NP_440797.1, NP_440525.1
A. thaliana: FtsH1:76.7, FtsH2: 74, FtsH5: 75.2, FtsH6: 74.5, FtsH7: 87.8, FtsH8: 73, FtsH9:87.8 kDa (chloroplastic); FtsH3: 89.3, FtsH4: 77.2, FtsH10: 89.5 kDa, FtsH11:88.7 kDa (mitochondrial)
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本人目前需从电鳗放电器官中提取乙酰胆碱受体蛋白,提纯需要的步骤和电鳗器官都可以提供,有没有提供外包提纯服务的公司或者实验室。
算上其他生物24种
大概是记不太清了
NaturalProteinStopsDeadlyHumanBrainCancerInMice
ScientistsfromJohnsHopkinsandfromtheUniversityofMilanhaveeffectivelyproventhattheycaninhibitlethalhumanbraincancersinmiceusingaproteinthatselectivelyinducespositivechangesintheactivityofcellsthatbehavelikecancerstemcells.ThereportispublishedinNature.
Themostcommontypeofbraincancer-glioblastoma-ismarkedbythepresenceofthesestem-cell-likebraincells,which,insteadoftriggeringthereplacementofdamagedcells,formcancertissue.Stemcells,unlikeallothercellsinthebody,arecapableofformingalmostanykindofcellwhentheright"signals"triggertheirdevelopment.
Fortheirtreatmentexperiment,theresearchersreliedonaclassofproteins,bonemorphogenicproteins,thatcauseneuralstem-cell-likeclusterstolosetheirstemcellproperties,whichinturnstopstheirABIlitytodivide.
Firsttheypretreatedhumanglioblastomacellswithbonemorphogenicprotein4(BMP4),theninjectedthesetreatedcellsintomousebrains.Inmiceinjectedwithcellsthatwerenotpretreated,large,invasivecancersgrew.InthemicewithBMP4-treatedcells,nocancersgrewatall.Threetofourmonthsafterinjection,allmicethatgotuntreatedcellsdied,andnearlyallmicewithBMP4-treatedcellswerealive.
Next,thescientistsdeliveredslow-releaseBMP4-containing"beads"directlyintomousebrainswithimplantedglioblastomacells.Micethatgotemptybeadsdevelopedlargemalignanttumorsanddied.MicewithBMP4beadssurvivedmuchlonger,and80percentsurvivedfourmonthsaftercancercellimplants.
"OurideaistotreatpatientswithBMP4orsomethinglikeitrightaftersurgerytoremoveglioblastomainhopesofpreventingtheregrowthofthecancerandimprovingsurvivaltime,"saysAlessandroOlivi,M.D.,directoroftheDivisionofNeurosurgicalOncologyatHopkinsandacontributortothestudy.
OlivisaysclinicalstudiesusingBMP4couldbeginwithinayearand,ifsuccessful,drugtherapiescouldbeavailabletothepublicwithinthreetofouryears.
"ThiswasproofoftheideathatBMPscouldstopglioblastomabydepletingthestem-cell-likepopulationthatfeedsit,"saysHenryBrem,M.D.,chairmanoftheDepartmentofNeurosurgeryatHopkinsandacollaboratorinthestudy."Thisopensexcitingdoorstofutureresearchintotreatmentsandtherapiesforsuchadevastatingdisease."

