Related Experiment Video
Updated: Apr 12, 2026
07:30
Basement Membrane Matrix Encapsulated Cell Aggregation for Investigating Murine Spleen Tissue Formation
Published on: June 28, 2024
2.0K
A novel bio-functional material based on mammalian cell aggresomes.
Escarlata Rodríguez-Carmona1, Rosa Mendoza, Eugènia Ruiz-Cánovas
1Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, 08193, Barcelona, Spain.
Applied Microbiology and Biotechnology
|May 25, 2015
Summary
Protein aggregates called aggresomes can remain functional. This study shows human alpha-galactosidase A in aggresomes is active and stable, suggesting potential for novel biomaterials in biotechnology.
Area of Science:
- Cellular Biology
- Biochemistry
- Biotechnology
Background:
- Aggresomes are protein aggregates formed in mammalian cells under cellular stress.
- Their physiological roles and the functional state of proteins within them are largely unknown.
- Cells producing recombinant proteins often contain aggresomes, relevant for biotech applications.
Purpose of the Study:
- To investigate the functional status of recombinant proteins within aggresomes.
- To determine if aggresome formation leads to protein inactivation.
- To explore the potential of aggresomes as functional biomaterials.
Main Methods:
- Expression of human alpha-galactosidase A (GLA) in mammalian cells to form aggresomes.
- Enzymatic activity assays to assess GLA function.
- Mechanical and thermal stability tests comparing aggresomal GLA to soluble GLA.
- Purification of aggresome particles.
Main Results:
- Recombinant human alpha-galactosidase A deposited in aggresomes retained enzymatic activity.
- Aggresomes containing GLA were mechanically stable.
- GLA within aggresomes exhibited enhanced thermal stability compared to soluble GLA.
- Aggresomes were efficiently produced and purified.
Conclusions:
- Protein deposition into aggresomes does not necessarily result in functional inactivation.
- Enzymatically active and stable aggresomes can be generated.
- Aggresomes represent a promising novel biomaterial for carrier-free, self-immobilized biocatalysis in biotechnology and biomedicine.
