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Monitoring of Ubiquitin-proteasome Activity in Living Cells Using a Degron (dgn)-destabilized Green Fluorescent Protein (GFP)-based Reporter Protein
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Monitoring of Ubiquitin-proteasome Activity in Living Cells Using a Degron (dgn)-destabilized Green Fluorescent Protein (GFP)-based Reporter Protein

Monitoring of Ubiquitin-proteasome Activity in Living Cells Using a Degron (dgn)-destabilized Green Fluorescent Protein (GFP)-based Reporter Protein

DOI:
10.3791/3327-v

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10:25 min

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November 10, 2012

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, , , ,
1Molecular and Cell Biology,Institute for Biomedical Aging Research, 2Department of Gerontology and Geriatrics, Netherlands Consortium for Healthy Aging,Leiden University Medical Center

Chapters

  • 00:00Title
  • 01:21Virus Production
  • 04:11Titering of Virus
  • 06:13Transduction of Human Diploid Fibroblasts
  • 07:19FACS Experiments
  • 08:50Proteasomal Activity in vivo
  • 10:04Conclusion

Summary

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A method to monitor ubiquitin-proteasome activity in living cells is described. A degron-destabilized GFP- (GFP-dgn) and a stable GFP-dgnFS fusion protein are generated and transduced into the cell using a lentiviral expression vector. This technique allows to generate a stable GFP-dgn/GFP-dgnFS expressing cell line in which ubiquitin-proteasome activity can be easily assessed using epifluorescence or flow cytometry.

Tags

Ubiquitin-proteasome ActivityDegronGreen Fluorescent Protein (GFP)Reporter ProteinProteolysisIntracellular OrganelleAbnormal ProteinsMisfolded ProteinsDamaged ProteinsOxidized ProteinsProteasome MaintenanceCellular ProcessesStress ResponseCell Cycle RegulationCellular DifferentiationImmune System ResponseUbiquitin-proteasome System DysfunctionTumorsNeurodegenerative DiseasesCellular SenescenceOrganismal AgingPrimary CellsLentiviral Expression VectorsTransfection Efficiency

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