IGF-1 signaling enhances cell survival in periodontal ligament fibroblasts vs. gingival fibroblasts

被引：42

作者：

Han, X ^{[1
]}

Amar, S ^{[1
]}

机构：

[1] Boston Univ, Goldman Sch Grad Dent, Dept Periodontol & Oral Biol, Boston, MA 02118 USA

来源：

JOURNAL OF DENTAL RESEARCH | 2003年 / 82卷 / 06期

关键词：

periodontal ligament fibroblasts; gingival fibroblasts; insulin-like growth factor; signaling pathway; cell survival;

D O I：

10.1177/154405910308200610

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

The role of insulin-like growth factors (IGFs) in the regulation of apoptosis has been suggested, yet their impact on specific cells such as periodontal ligament fibroblasts (PDLF) and gingival fibroblasts (GF) remains unknown. The purpose of this study was to test the role of IGF-1 signaling in cell survival in PDLF compared with GF. In periodontal tissue sections, a significantly reduced apoptotic rate was first demonstrated in PDLF compared with GF. In vitro, IGF-1 substantially enhanced cell survival in PDLF compared with GF by the up-regulation of anti-apoptotic molecules and the down-regulation of proapoptotic molecules. Furthermore, the differential expression of insulin-like growth factor binding protein 5 (IGFBP-5) was observed in vitro, and its differential distribution was confirmed in vivo. Analysis of the present data suggests an enhanced cell survival in PDLF compared with GF by the up-regulation of IGF-1 signaling pathway.

引用

页码：454 / 459

页数：6

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