C-reactive protein: structure, function, regulation, and role in clinical diseases
Hai-Hong Zhou1,2,3, Yu-Long Tang4, Tian-Hao Xu4
1Centre for Translational Medicine, Gansu Provincial Academic Institute for Medical Research, Lanzhou, China.
Frontiers in Immunology
|July 1, 2024
Summary
C-reactive protein (CRP) is an acute phase protein involved in innate immunity. This review explores CRP structure, expression, complement activation, and its role in diseases, highlighting conserved functions across species.
Area of Science:
- Biochemistry
- Immunology
- Molecular Biology
Background:
- C-reactive protein (CRP) is an evolutionarily conserved plasma protein belonging to the pentraxin superfamily.
- It is characterized by a pentameric structure and calcium-dependent binding to ligands like phosphocholine.
- CRP levels rise significantly during inflammation, marking it as a key acute phase protein.
Purpose of the Study:
- To review the structural characteristics of C-reactive protein.
- To discuss the regulation of CRP gene expression.
- To examine CRP's role in complement activation and its in vivo functions in disease.
Main Methods:
- Literature review focusing on structural biology and immunology.
- Analysis of studies on CRP expression and regulation.
- Examination of research on CRP's in vivo functions and disease relevance.
Main Results:
- CRP exhibits conserved protective functions across various species.
- Human CRP (huCRP) can display diverse biological activities due to conformational changes.
- CRP plays a crucial role in innate immune responses and inflammation.
Conclusions:
- CRP's structure and function are critical in innate immunity.
- Understanding CRP's regulation and activation pathways is key to its role in disease.
- CRP serves as a valuable clinical marker for inflammation severity.
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