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Alpha-2-Macroglobulin in Inflammation, Immunity and Infections
Jennifer Vandooren1, Yoshifumi Itoh2
1Laboratory of Immunobiology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Katholieke Universiteit (KU) Leuven, Leuven, Belgium.
Frontiers in Immunology
|December 31, 2021
Summary
Alpha-2-macroglobulin (A2M) is a protease inhibitor that traps active proteases. This review covers A2M's diverse roles in immunity, inflammation, and infection.
Area of Science:
- Biochemistry
- Immunology
- Molecular Biology
Background:
- Alpha-2-macroglobulin (A2M) is a key extracellular protease inhibitor.
- It functions by trapping active proteases within its molecular structure.
- A2M also regulates proteolysis and interacts with various biological molecules.
Purpose of the Study:
- To provide a comprehensive overview of A2M functions.
- To contextualize A2M's roles within inflammation, immunity, and infection.
Main Methods:
- Literature review of A2M functions.
- Analysis of A2M's involvement in immune and inflammatory processes.
Main Results:
- A2M acts as a broad-spectrum protease inhibitor.
- A2M facilitates cell migration and binds cytokines and growth factors.
- A2M plays a significant role in immune-cell function.
Conclusions:
- A2M possesses multifaceted functions beyond protease inhibition.
- A2M is critically important in regulating inflammation, immunity, and host defense during infections.
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