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Preparation of fibrin hydrogels to promote the recruitment of anti-inflammatory macrophages
- Source :
- Acta biomaterialia. 89
- Publication Year :
- 2018
-
Abstract
- Macrophages play an important role in regulating inflammation and tissue regeneration. In the present study, uniform fibrin hydrogel scaffolds were engineered in millimeters. These scaffolds induced anti-inflammatory macrophages to digest and infiltrate the scaffold. The culture conditions of the fibrin hydrogels decreased the secretion of tumor necrosis factor-α (TNF-α), a pro-inflammatory cytokine, and increased the secretion of interleukin-10 (IL-10), an anti-inflammatory cytokine, in mouse bone marrow-derived macrophages. Similar results were also observed in human monocyte-derived macrophages (HMDMs). In addition, most of cells that infiltrated the fibrin hydrogels were macrophages expressing CD163, CD204, and CD206, which are anti-inflammatory macrophages markers, both in mice and in human cells. Therefore, to induce increased macrophage infiltration, we attempted to combine fibrin hydrogels with SEW2871, a monocyte/macrophage recruitment agent that is known to be a sphingosine-1 phosphate receptor 1 agonist, solubilized in water by micelle formation with a cholesterol-grafted gelatin. However, the fibrin hydrogels alone retained the same monocyte migration activity as the hydrogels with SEW2871-incorporated micelles in the hydrogel-bearing mouse model. These findings indicate that fibrin hydrogels have a strong promoting effect on the recruitment of anti-inflammatory macrophages. Therefore, fibrin hydrogels may be an optimal biomaterial in the design of medicines for macrophage-induced regenerative therapies. STATEMENT OF SIGNIFICANCE: The immune response to tissue injury is important for determining the speed and the result of the regeneration. Alternatively activated macrophages (M2 macrophages) resolve inflammatory response and promote tissue repair by producing anti-inflammatory factors. Promoting the recruitment of macrophages is a hopeful strategy in the design of biomaterials for tissue regeneration. In the present study, we combined the fibrin hydrogel, which promotes anti-inflammatory polarization, with a macrophage recruitment agent. We revealed that the fibrin hydrogel significantly promoted anti-inflammatory polarization in mouse in vivo and human in vitro. Moreover, macrophages significantly infiltrated into the fibrin hydrogel regardless of the agent combination. Fibrin hydrogels may become a reliable biomaterial for tissue regeneration, and the present study is believed to provide information for many researchers.
- Subjects :
- Male
medicine.medical_treatment
0206 medical engineering
Biomedical Engineering
Inflammation
02 engineering and technology
Thiophenes
Biochemistry
Fibrin
Biomaterials
Mice
Tissue engineering
Antigens, CD
medicine
Animals
Molecular Biology
Oxadiazoles
biology
Chemistry
Tumor Necrosis Factor-alpha
Regeneration (biology)
Monocyte
Macrophages
Hydrogels
General Medicine
021001 nanoscience & nanotechnology
020601 biomedical engineering
Cell biology
Interleukin-10
Cytokine
medicine.anatomical_structure
Gene Expression Regulation
Self-healing hydrogels
biology.protein
Tumor necrosis factor alpha
medicine.symptom
0210 nano-technology
Biotechnology
Subjects
Details
- ISSN :
- 18787568
- Volume :
- 89
- Database :
- OpenAIRE
- Journal :
- Acta biomaterialia
- Accession number :
- edsair.doi.dedup.....727d754380607f8646f3695097653ab9