Therapeutic potential of α-crystallin
Ram H Nagaraj1, Rooban B Nahomi1, Niklaus H Mueller1
1Department of Ophthalmology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
Background:
The findings that α-crystallins are multi-functional proteins with diverse biological functions have generated considerable interest in understanding their role in health and disease. Recent studies have shown that chaperone peptides of α-crystallin could be delivered into cultured cells and in experimental animals with beneficial effects against protein aggregation, oxidation, inflammation and apoptosis.
Scope Of Review:
In this review, we will summarize the latest developments on the therapeutic potential of α-crystallins and their functional peptides.
Major Conclusions:
α-Crystallins and their functional peptides have shown significant favorable effects against several diseases. Their targeted delivery to tissues would be of great therapeutic benefit. However, α-crystallins can also function as disease-causing proteins. These seemingly contradictory functions must be carefully considered prior to their therapeutic use.
General Significance:
αA and αB-Crystallin are members of the small heat shock protein family. These proteins exhibit molecular chaperone and anti-apoptotic activities. The core crystallin domain within these proteins is largely responsible for these prosperities. Recent studies have identified peptides within the crystallin domain of both α- and αB-crystallins with remarkable chaperone and anti-apoptotic activities. Administration of α-crystallin or their functional peptides has shown substantial inhibition of pathologies in several diseases. However, α-crystallins have been shown to promote disease-causing pathways. These two sides of the proteins are discussed in this review. This article is part of a Special Issue entitled Crystallin Biochemistry in Health and Disease.
Insights
Alpha-crystallins (α-crystallins) and their peptides show therapeutic potential against diseases by preventing protein aggregation and apoptosis. However, their dual role necessitates careful consideration for safe therapeutic application.
Area of Science:
- Biochemistry
- Molecular Biology
- Protein Science
Background:
- Alpha-crystallins (α-crystallins) are multifunctional proteins with roles in health and disease.
- Recent research highlights chaperone peptides of α-crystallins delivered to cells and animals show benefits against protein aggregation, oxidation, inflammation, and apoptosis.
Purpose of the Study:
- To review the latest developments in the therapeutic potential of α-crystallins and their functional peptides.
- To discuss the dual role of α-crystallins in both promoting and preventing disease pathways.
Main Methods:
- Review of recent scientific literature on α-crystallins and their therapeutic applications.
- Analysis of studies investigating the chaperone and anti-apoptotic activities of α-crystallin peptides.
Main Results:
- α-Crystallins and their functional peptides demonstrate significant therapeutic benefits in various disease models.
- Peptides derived from the core crystallin domain exhibit potent chaperone and anti-apoptotic activities.
- Evidence suggests α-crystallins can also promote disease-causing pathways.
Conclusions:
- α-Crystallins and their peptides hold promise for treating several diseases.
- Targeted delivery of these proteins and peptides could offer significant therapeutic advantages.
- The potential for α-crystallins to act as disease-promoting agents requires careful evaluation before clinical use.
