» Articles » PMID: 38750493

Ficolin-A Induces Macrophage Polarization to a Novel Pro-inflammatory Phenotype Distinct from Classical M1

Overview
Publisher Biomed Central
Date 2024 May 15
PMID 38750493
Authors
Affiliations
Soon will be listed here.
Abstract

Background: Macrophages are key inflammatory immune cells that orchestrate the initiation and progression of autoimmune diseases. The characters of macrophage in diseases are determined by its phenotype in response to the local microenvironment. Ficolins have been confirmed as crucial contributors to autoimmune diseases, with Ficolin-2 being particularly elevated in patients with autoimmune diseases. However, whether Ficolin-A stimulates macrophage polarization is still poorly understood.

Methods: We investigated the transcriptomic expression profile of murine bone marrow-derived macrophages (BMDMs) stimulated with Ficolin-A using RNA-sequencing. To further confirm a distinct phenotype activated by Ficolin-A, quantitative RT-PCR and Luminex assay were performed in this study. Additionally, we assessed the activation of underlying cell signaling pathways triggered by Ficolin-A. Finally, the impact of Ficolin-A on macrophages were investigated in vivo through building Collagen-induced arthritis (CIA) and Dextran Sulfate Sodium Salt (DSS)-induced colitis mouse models with Fcna-/- mice.

Results: Ficolin-A activated macrophages into a pro-inflammatory phenotype distinct to LPS-, IFN-γ- and IFN-γ + LPS-induced phenotypes. The transcriptomic profile induced by Ficolin-A was primarily characterized by upregulation of interleukins, chemokines, iNOS, and Arginase 1, along with downregulation of CD86 and CD206, setting it apart from the M1 and M2 phenotypes. The activation effect of Ficolin-A on macrophages deteriorated the symptoms of CIA and DSS mouse models, and the deletion of Fcna significantly alleviated the severity of diseases in mice.

Conclusion: Our work used transcriptomic analysis by RNA-Seq to investigate the impact of Ficolin-A on macrophage polarization. Our findings demonstrate that Ficolin-A induces a novel pro-inflammatory phenotype distinct to the phenotypes activated by LPS, IFN-γ and IFN-γ + LPS on macrophages.

Citing Articles

Autophagy-related biomarkers identified in sepsis-induced ARDS through bioinformatics analysis.

Wang W, Zhao J, Li H, Huang D, Fu S, Li Z Sci Rep. 2025; 15(1):7864.

PMID: 40050379 PMC: 11885441. DOI: 10.1038/s41598-025-92409-7.


Differential Expression of ARG1 and MRC2 in Retinal Müller Glial Cells During Autoimmune Uveitis.

Fleischer A, Amann B, von Toerne C, Degroote R, Schmalen A, Weisser T Biomolecules. 2025; 15(2).

PMID: 40001591 PMC: 11853277. DOI: 10.3390/biom15020288.

References
1.
Karin M, Clevers H . Reparative inflammation takes charge of tissue regeneration. Nature. 2016; 529(7586):307-15. PMC: 5228603. DOI: 10.1038/nature17039. View

2.
Xie C, Mao X, Huang J, Ding Y, Wu J, Dong S . KOBAS 2.0: a web server for annotation and identification of enriched pathways and diseases. Nucleic Acids Res. 2011; 39(Web Server issue):W316-22. PMC: 3125809. DOI: 10.1093/nar/gkr483. View

3.
Cao R, Li Z, Wu C, Ji S, Li Y, Cao X . Identification of a Small Molecule with Strong Anti-Inflammatory Activity in Experimental Autoimmune Encephalomyelitis and Sepsis through Blocking Gasdermin D Activation. J Immunol. 2022; 209(4):820-828. DOI: 10.4049/jimmunol.2100977. View

4.
Luo F, Sun X, Wang Y, Wang Q, Wu Y, Pan Q . Ficolin-2 defends against virulent Mycobacteria tuberculosis infection in vivo, and its insufficiency is associated with infection in humans. PLoS One. 2013; 8(9):e73859. PMC: 3767610. DOI: 10.1371/journal.pone.0073859. View

5.
Guo M, Hartlova A, Dill B, Prescott A, Gierlinski M, Trost M . High-resolution quantitative proteome analysis reveals substantial differences between phagosomes of RAW 264.7 and bone marrow derived macrophages. Proteomics. 2014; 15(18):3169-74. PMC: 4833182. DOI: 10.1002/pmic.201400431. View