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Updated: Jul 7, 2026

4D Imaging of Protein Aggregation in Live Cells
Published on: April 5, 2013
Combating protein misfolding and aggregation by intracellular antibodies
Alessio Cardinale1, Silvia Biocca
1IRCCS San Raffaele, Roma, Italy.
Abstract:
Conformational or misfolding diseases are a large class of devastating human disorders associated with protein misfolding and aggregation. Most conformational diseases are caused by a combination of genetic and environmental factors, suggesting that spontaneous events can destabilize the protein involved in the pathology or impair the clearance mechanisms of misfolded aggregates. Aging is one of the risk factors associa-ted to these events, and the clinical relevance of conformational disorders is growing dramatically, as they begin to reach epidemic proportions due to increases in mean lifespan. Currently, there are no effective strategies to slow or prevent these diseases. Intrabodies are promising therapeutic agents for the treatment of misfolding diseases, because of their virtually infinite ability to specifically recognize the different conformations of a protein, including pathological isoforms, and because they can be targeted to the potential sites of aggregation (both intra- and extracellular sites). These molecules can work as neutralizing agents against amylo-idogenic proteins by preventing their aggregation, and/or as molecular shunters of intracellular traffic by re-routing the protein from its potential aggregation site. The fast-developing field of recombinant antibody technology provides intrabodies with enhanced binding specificity and stability, together with lower immunogenicity, for use in a clinical setting. This review provides an update on the applications of intrabodies in misfolding diseases, with particular emphasis on an evaluation of their multiple and feasible modes of action.
Insights
Intrabodies offer a promising therapeutic strategy for protein misfolding diseases by targeting and neutralizing misfolded protein aggregates. Advances in recombinant antibody technology enhance their specificity and stability for clinical applications.
Area of Science:
- Neuroscience
- Biochemistry
- Immunology
Background:
- Protein misfolding and aggregation cause devastating conformational diseases.
- Genetic and environmental factors, including aging, contribute to these disorders.
- Current treatments for conformational diseases are limited, with growing clinical relevance.
Purpose of the Study:
- To review the therapeutic potential of intrabodies for treating protein misfolding diseases.
- To evaluate the various mechanisms of action of intrabodies in preventing protein aggregation.
- To highlight advancements in recombinant antibody technology for clinical intrabody applications.
Main Methods:
- Review of current literature on intrabody technology and protein misfolding diseases.
- Analysis of intrabody mechanisms, including neutralization and intracellular traffic redirection.
- Evaluation of recombinant antibody technology for enhanced specificity, stability, and reduced immunogenicity.
Main Results:
- Intrabodies can specifically recognize and bind to pathological protein conformations.
- Intrabodies can prevent protein aggregation and redirect intracellular traffic.
- Recombinant antibody technology has improved intrabody efficacy and clinical applicability.
Conclusions:
- Intrabodies represent a promising therapeutic approach for conformational diseases.
- Targeted delivery and enhanced properties of intrabodies offer new treatment avenues.
- Further development of intrabody technology could lead to effective strategies against debilitating protein misfolding disorders.
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