Abstract:
:Fibronectin (FN) is a main component of extracellular matrix (ECM) in most adult tissues. Under pathological conditions, particularly inflammation, wound healing and tumors, an alternatively spliced exon extra domain A (EDA) is included in the FN protein (EDA+FN), which facilitates cellular proliferation, motility, and aggressiveness in different lesions. In this study we investigated the effects of EDA+FN on bone destruction in human radicular cysts and explored the possibility of editing FN gene or blocking the related paracrine signaling pathway to inhibit the osteoclastogenesis. The specimens of radicular cysts were obtained from 20 patients. We showed that the vessel density was positively associated with both the lesion size (R = 0.49, P = 0.001) and EDA+FN staining (R = 0.26, P = 0.022) in the specimens. We isolated fibroblasts from surgical specimens, and used the CRISPR/Cas system to knockout the EDA exon, or used IST-9 antibody and bevacizumab to block EDA+FN and VEGF, respectively. Compared to control fibroblasts, the fibroblasts from radicular cysts exhibited significantly more Trap+MNCs, the relative expression level of VEGF was positively associated with both the ratio of EDA+FN/total FN (R = 0.271, P = 0.019) and with the number of Trap+MNCs (R = 0.331, P = 0.008). The knockout of the EDA exon significantly decreased VEGF expression in the fibroblasts derived from radicular cysts, leading to significantly decreased osteoclastogenesis; similar results were observed using bevacizumab to block VEGF, but block of EDA+FN with IST-9 antibody had no effect. Furthermore, the inhibitory effects of gene editing on Trap+MNC development were restored by exogenous VEGF. These results suggest that EDA+FN facilitates osteoclastogenesis in the fibrous capsule of radicular cysts, through a mechanism mediated by VEGF via an autocrine effect on the fibroblasts. Bevacizumab inhibits osteoclastogenesis in radicular cysts as effectively as the exclusion of the EDA exon by gene editing.
journal_name
Acta Pharmacol Sinjournal_title
Acta pharmacologica Sinicaauthors
Wang HC,Wang P,Chen YW,Zhang Ydoi
10.1038/s41401-018-0172-xsubject
Has Abstractpub_date
2019-07-01 00:00:00pages
949-956issue
7eissn
1671-4083issn
1745-7254pii
10.1038/s41401-018-0172-xjournal_volume
40pub_type
杂志文章abstract:AIM:To investigate whether sodium ferulate (SF) can protect cortical neurons from glutamate-induced neurotoxicity and the mechanisms responsible for this protection. METHODS:Cultured cortical neurons were incubated with 50 micromol/L glutamate for either 30 min or 24 h, with or without pre-incubation with SF (100, 200...
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更新日期:2002-03-01 00:00:00
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journal_title:Acta pharmacologica Sinica
pub_type: 杂志文章
doi:10.1111/j.1745-7254.2008.00721.x
更新日期:2008-01-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2013-01-01 00:00:00
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pub_type: 杂志文章
doi:
更新日期:2002-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1745-7254.2006.00306.x
更新日期:2006-05-01 00:00:00
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journal_title:Acta pharmacologica Sinica
pub_type: 杂志文章
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doi:
更新日期:2002-11-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2002-10-01 00:00:00
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更新日期:2004-06-01 00:00:00
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更新日期:2005-04-01 00:00:00
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更新日期:2015-07-01 00:00:00
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更新日期:2004-08-01 00:00:00
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更新日期:2008-02-01 00:00:00
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journal_title:Acta pharmacologica Sinica
pub_type: 杂志文章
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更新日期:2017-09-01 00:00:00
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更新日期:2002-02-01 00:00:00
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更新日期:2010-08-01 00:00:00