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Updated: Feb 10, 2026
10:07
Investigation of Macrophage Polarization Using Bone Marrow Derived Macrophages
Published on: June 23, 2013
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Modulating Macrophage Polarization through CCR2 Inhibition and Multivalent Engagement
Michael B Deci1, Scott W Ferguson1, Sydney L Scatigno1
1Department of Pharmaceutical Sciences, School of Pharmacy , University at Buffalo, The State University of New York , Buffalo , NY 14214 , United States.
Molecular Pharmaceutics
|May 24, 2018
Summary
Researchers identified a novel molecule that blocks the CCR2 receptor, reducing inflammatory cell migration and promoting an M1 macrophage phenotype. Multivalent versions of this molecule further enhanced these anti-inflammatory effects.
Area of Science:
- Immunology
- Cell Biology
- Molecular Biology
Background:
- Inflammatory monocyte recruitment to damaged tissues worsens patient outcomes.
- Monocyte migration is mediated by CCL2 chemokine binding to the CCR2 receptor.
- The impact of CCR2 inhibition on macrophage polarization and the role of multivalency remain unclear.
Purpose of the Study:
- To identify a novel CCR2 inhibitor.
- To investigate CCR2 inhibition's effect on macrophage polarization.
- To explore the impact of multivalency on CCR2-targeted therapies.
Main Methods:
- Affinity selection with a phage library to identify a single-chain variable fragment (scFv) targeting CCR2.
- Assays to evaluate cell migration inhibition and macrophage polarization (M1/M2 phenotype).
- Liposome-based multivalent display of the identified scFv.
Main Results:
- A novel high-affinity scFv (58C) targeting CCR2 was identified (KD = 59.8 nM).
- 58C-scFv inhibited monocyte migration and induced a pro-inflammatory M1 macrophage phenotype.
- Multivalent display of 58C-scFv on liposomes significantly enhanced CCR2 inhibition and M1 polarization compared to monomeric form.
Conclusions:
- CCR2 inhibition effectively polarizes macrophages towards an inflammatory M1 phenotype.
- Multivalency amplifies the therapeutic effects of CCR2-targeting molecules on cell migration and polarization.
- These findings offer insights into leveraging multivalency for improved downstream signaling and cellular fate modulation in inflammatory diseases.
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