Expression of high mobility group box 1 in inflamed dental pulp and its chemotactic effect on dental pulp cells
| Autor: | Hongwei Jiang, Chen Fan, Xufang Zhang, Junqi Ling, Yihua Huang, Qimei Gong |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Lipopolysaccharide
Biophysics chemical and pharmacologic phenomena Inflammation HMGB1 Polymerase Chain Reaction Biochemistry chemistry.chemical_compound stomatognathic system Dental pulp stem cells medicine Humans HMGB1 Protein Receptor Molecular Biology Dental Pulp Cell Proliferation DNA Primers Base Sequence biology Cell growth Chemotaxis Cell migration Cell Biology Cell biology stomatognathic diseases chemistry Immunology biology.protein Pulp (tooth) medicine.symptom |
| Zdroj: | Biochemical and Biophysical Research Communications. 450:1547-1552 |
| ISSN: | 0006-291X |
| Popis: | High mobility group box 1 protein (HMGB1) is a chromatin protein which can be released extracellularly, eliciting a pro-inflammatory response and promoting tissue repair process. This study aimed to examine the expression and distribution of HMGB1 and its receptor RAGE in inflamed dental pulp tissues, and to assess its effects on proliferation, migration and cytoskeleton of cultured human dental pulp cells (DPCs). Our data demonstrated that cytoplasmic expression of HMGB1 was observed in inflamed pulp tissues, while HMGB1 expression was confined in the nuclei in healthy dental pulp. The mRNA expression of HMGB1 and RAGE were significantly increased in inflamed pulps. In in vitro cultured DPCs, expression of HMGB1 in both protein and mRNA level was up-regulated after treated with lipopolysaccharide (LPS). Exogenous HMGB1 enhanced DPCs migration in a dose-dependent manner and induced the reorganization of f-actin in DPCs. Our results suggests that HMGB1 are not only involved in the process of dental pulp inflammation, but also play an important role in the recruitment of dental pulp stem cells, promoting pulp repair and regeneration. |
| Databáze: | OpenAIRE |
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