Acinetobocter baumannfi （A. Baumannii） is an emerging opportunistic pathogen responsible for hospital-acquired infections, and which now constitutes a sufficiently serious threat to public health to necessitate the ...Acinetobocter baumannfi （A. Baumannii） is an emerging opportunistic pathogen responsible for hospital-acquired infections, and which now constitutes a sufficiently serious threat to public health to necessitate the development of an effective vaccine. In this study, a recombinant fused protein named OmpK/Omp22 and two individual proteins OmpK and Omp22 were obtained using recombinant expression and Ni-affinity purification. Groups of BALB/c mice were immunized with these proteins and challenged with a clinically isolated strain of A. boumonnii. The bacterial load in the blood, pathological changes in the lung tissue and survival rates after challenge were evaluated. Mice immunized with OmpK/Omp22 fused protein provided significantly greater protection against A. boumonnfi challenge than those immunized with either of the two proteins individually. The results provide novel clues for future design of vaccines against A. boumonnii.展开更多
Mutations in presenilin 1(PS1)gene are closely associated with the early onset of familial Alzheimer’s disease(EOFAD).The fusion genes,GFP-PS1(recombinant plasmid pEGFP-C1-PS1)and PS1-GFP(recombinant plasmid pEGFP-N2...Mutations in presenilin 1(PS1)gene are closely associated with the early onset of familial Alzheimer’s disease(EOFAD).The fusion genes,GFP-PS1(recombinant plasmid pEGFP-C1-PS1)and PS1-GFP(recombinant plasmid pEGFP-N2-PS1)were constructed to study the subcellular localization of PS1 holoprotein.Recombinant plasmids were transiently transfected into two cell lines,HEK293 and CHO,respectively,using the green fluorescence from GFP(green fluorescence protein)as the PS1 localization signal.Then,we observed green fluorescence with a SPOT II(Olympus,BH2)and CONFOCAL microscope(Olympus,FV300)under 488 nm.The results show that PS1 located on the nuclear envelope.A few can be found on the cellular membrane and in the cytosol in a non-homogeneous distribution.展开更多
基金supported by a project from Educational Commission of Sichuan Province of China[No 17ZA0166]
文摘Acinetobocter baumannfi （A. Baumannii） is an emerging opportunistic pathogen responsible for hospital-acquired infections, and which now constitutes a sufficiently serious threat to public health to necessitate the development of an effective vaccine. In this study, a recombinant fused protein named OmpK/Omp22 and two individual proteins OmpK and Omp22 were obtained using recombinant expression and Ni-affinity purification. Groups of BALB/c mice were immunized with these proteins and challenged with a clinically isolated strain of A. boumonnii. The bacterial load in the blood, pathological changes in the lung tissue and survival rates after challenge were evaluated. Mice immunized with OmpK/Omp22 fused protein provided significantly greater protection against A. boumonnfi challenge than those immunized with either of the two proteins individually. The results provide novel clues for future design of vaccines against A. boumonnii.
文摘Mutations in presenilin 1(PS1)gene are closely associated with the early onset of familial Alzheimer’s disease(EOFAD).The fusion genes,GFP-PS1(recombinant plasmid pEGFP-C1-PS1)and PS1-GFP(recombinant plasmid pEGFP-N2-PS1)were constructed to study the subcellular localization of PS1 holoprotein.Recombinant plasmids were transiently transfected into two cell lines,HEK293 and CHO,respectively,using the green fluorescence from GFP(green fluorescence protein)as the PS1 localization signal.Then,we observed green fluorescence with a SPOT II(Olympus,BH2)and CONFOCAL microscope(Olympus,FV300)under 488 nm.The results show that PS1 located on the nuclear envelope.A few can be found on the cellular membrane and in the cytosol in a non-homogeneous distribution.
