简介：在最近的年里，与人性化的免疫系统构造妄想的老鼠的技术显著地改善了。人的有免疫力的房间的多重系在与人的造血的干细胞被移植了的immunodeficient老鼠发展。更重要地，这些老鼠在免疫或微生物引起的感染之上装功能的体液、细胞的有免疫力的回答。人的免疫不全病毒类型(HIV-1)我能在人性化的老鼠建立感染，导致CD4+T房间弄空和伴随的nonspecific免疫者激活，它在HIV-1-infected人的病人模仿immunopathology。这为学习HIV-1immunopathogenesis并且为开发新奇基于免疫者的治疗的机制使人性化的老鼠成为一个最佳的模型。

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简介：InordertoimprovethefunctionalaffinityofthehumanizedVHsingledomainantibodyagainsthumanlungcancer,thegenescodingthehomogenousdimersdihu3D3V_Handtetramerstehu3D3V_HwereconstructedbyfusingtheSVS-Cysshortpeptideandp53tetramerizationstructuraldomaingenetohu3D3V_HgeneviarecombinantPCRtechnique,respectively.Then,thedihu3D3V_Handtehu3D3V_HgeneswereclonedtotheprokaryoticexpressionvectorpET-22b(+)andexpressedinE.coliBL21(DE3).TheproteinsexpressedwerepurifiedthroughNi~(2+)-affinitychromatographiccolumn.Meanwhile,thehu3D3V_H,dihu3D3V_Handtehu3D3V_HproteinswerelabeledwithFITC,andtheirreactivitywithan-tigenandspecificitywereanalyzedbyimmunofluorescenceassay.Astotheirfunctionalaffinities,itwasanalyzedandcomparedbyflowcytometry.Theresultsindicatedthatthesetwogeneswereexpressedasmonomersandmainlyasinclusionbodies.Afterpurificationandrenaturation,therewereabout50%ofdimersand70%oftetramerremainingintheproteinsolution.Inaddition,thedihu3D3V_Handte-hu3D3V_Hproteinsstillremainedthereactivitywithantigenandspecificityofhu3D3V_Hprotein,andtheirfunctionalaffinitieswereincreasedabout60%or100%respectively,comparedwiththoseofhu3D3V_Hprotein.Itisevidentthatthefunctionalaffinityofhu3D3V_Hproteincanbegreatlyimprovedbyincreasingitsbindingvalency.