Subcellular localization of PS1 based on PS1/GFP fusing protein

Abstract

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.

References

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