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Updated: Apr 7, 2026

Evaluation of the Interplay Between the Complement Protein C1q and Hyaluronic Acid in Promoting Cell Adhesion
Published on: June 15, 2019
Emerging and Novel Functions of Complement Protein C1q
Lubna Kouser1, Shanmuga Priyaa Madhukaran2, Abhishek Shastri3
1Centre for Infection, Immunity and Disease Mechanisms, College of Health and Life Sciences, Brunel University London , Uxbridge , UK.
Complement protein C1q is a versatile immune molecule involved in cell clearance, pregnancy, and central nervous system functions. Research highlights its diverse roles in health and disease, including neurodegeneration and cancer.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- Complement protein C1q initiates the classical complement pathway.
- C1q binds diverse ligands and modulates immune and non-immune cells.
- Established roles include apoptotic cell clearance and B cell tolerance.
Purpose of the Study:
- To review the multifaceted roles of complement C1q.
- To highlight C1q's involvement in pregnancy, CNS function, and disease.
- To underscore emerging research areas for C1q.
Main Methods:
- Literature review of complement C1q functions.
- Analysis of C1q's interactions with various cell types and ligands.
- Synthesis of evidence from recent studies.
Main Results:
- C1q deficiency/dysregulation is linked to adverse pregnancy outcomes and infections.
- C1q plays a role in CNS pathogen defense, neurodegeneration, and synaptic pruning.
- C1q exhibits anti-cancer effects and potential roles in aging.
Conclusions:
- Complement C1q is a crucial molecule with diverse physiological and pathological functions.
- Further research into C1q's roles in pregnancy, CNS, cancer, and aging is warranted.
- C1q represents a significant target for therapeutic interventions.
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