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The multiple facets of alpha-1-antitrypsin.
1Lung Investigation Unit, Queen Elizabeth Hospital Birmingham, Mindelsohn way, Edgbaston, Birmingham B15 2WB, UK.
Annals of Translational Medicine
|July 25, 2015
Summary
Alpha-1-antitrypsin (AAT) is a key proteinase inhibitor. Its deficiency causes lung disease, but AAT also has non-proteolytic functions, suggesting broader therapeutic potential.
Area of Science:
- Biochemistry
- Immunology
- Pulmonology
Background:
- Alpha-1-antitrypsin (AAT) is a primary inhibitor of serine proteinases.
- Genetic deficiency in AAT is linked to neutrophilic diseases, notably severe emphysema, via the proteinase/antiprotease hypothesis.
- Emerging evidence highlights AAT's role in regulating inflammatory and immunological responses beyond its inhibitory functions.
Purpose of the Study:
- To review the established and emerging functions of Alpha-1-antitrypsin (AAT).
- To explore the non-proteolytic, immunomodulatory roles of AAT.
- To discuss the potential of AAT as a therapeutic agent in diverse clinical settings.
Main Methods:
- Comprehensive literature review of published studies on Alpha-1-antitrypsin.
- Analysis of research detailing both traditional proteinase inhibition and novel functions.
- Synthesis of findings related to AAT's role in disease and therapeutic applications.
Main Results:
- AAT effectively inhibits serine proteinases, and its deficiency leads to tissue damage.
- AAT possesses significant non-proteolytic functions influencing inflammatory and immunological processes.
- The multifaceted role of AAT supports its potential as a therapeutic agent.
Conclusions:
- Alpha-1-antitrypsin (AAT) exhibits both traditional proteinase inhibition and novel non-proteolytic functions.
- These diverse roles suggest AAT's therapeutic utility extends to various clinical conditions beyond genetic deficiency diseases.
- Further research into AAT's polyfunctional nature is warranted for clinical applications.
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