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IL-4 induces the formation of multinucleated giant cells and expression of β5 integrin in central giant cell lesion.

Abstract：

BACKGROUND:It is now well established that IL-4 has a central role in the development of monocytes to multinucleated giant cells (MGCs) by inducing the expression of integrins on the surface of monocytes. The aim of this study was to investigate the potential role of IL-4 in induction of β5 integrin expression in the peripheral blood samples of patients with giant cell granuloma. MATERIAL AND METHODS:Monocytes were isolated from peripheral blood samples of patients with central giant cell granuloma (CGCG) and healthy controls using human Monocyte Isolation Kit II. Isolated monocytes were then cultured in the absence or presence of IL-4 (10 and 20 ng/mL), and following RNA extraction and cDNA synthesis, Real-time PCR was performed to determine the level of β5 integrin expression. The formation of CGCGs and morphological analyses were done under light microscopy. For confirmation of CGCGs, immunocytochemistry technique was also carried out by anti-RANK (receptor-activator of NF-κB ligand) antibody. RESULTS:In both patient and control groups, β5 levels were significantly enhanced by increasing the IL-4 dose from 10 to 20 ng/mL. In addition, these differences were significant between patient and control groups without IL-4 treatment. On the other hand, the number of cells which expressed RANK and therefore the number of giant cells were significantly higher in the patient group in comparison to controls, as assessed by immunohistochemistry evaluations. CONCLUSIONS:In this study, we showed an elevation in the expression levels of β5 integrin when stimulated by IL-4. It is strongly indicated that this integrin acts as an important mediator during macrophage to macrophage fusion and development of giant cells.

journal_name

Med Oral Patol Oral Cir Bucal

journal_title

Medicina oral, patologia oral y cirugia bucal

authors

Aghbali A,Rafieyan S,Mohamed-Khosroshahi L,Baradaran B,Shanehbandi D,Kouhsoltani M

doi

10.4317/medoral.20935

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

e1-e6

issue

eissn

1698-4447

issn

1698-6946

pii

20935

journal_volume

pub_type

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IL-4 induces the formation of multinucleated giant cells and expression of β5 integrin in central giant cell lesion.