Effects of enamel matrix derivative on bone-related mRNA expression in human periodontal ligament cells in vitro.

Effects of enamel matrix derivative on bone-related mRNA expression in human periodontal ligament cells in vitro.
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釉质基质衍生物对体外人牙周膜细胞骨相关mRNA表达的影响。

DOI:
10.1902/jop.2006.050244
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发表时间:
2006
影响因子:
4.3
通讯作者:
T. Oates
T. Oates
中科院分区:
医学2区
文献类型:
--
作者:
Kazuaki Takayanagi;G. Osawa;H. Nakaya;D. Cochran;K. Kamoi;T. Oates

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背景 牙釉质基质衍生物(EMD)已被证明具有通过矿化组织形成刺激牙周再生的潜力。骨代谢的分子调节剂包括骨保护素 (OPG)、核因子 kappa B 配体受体激活剂 (RANKL)、环氧合酶 2 (COX2) 和核心结合因子 α 1 (Cbfa1)。这些调节分子在 EMD 刺激矿化组织形成过程中的作用尚不清楚。因此,本研究的目的是探讨EMD对人牙周膜(PDL)细胞中这些骨相关分子的影响。 方法 将人 PDL 细胞培养物用 EMD(5 至 100 微克/毫升)处理 24 小时。使用酚氯仿分离总 RNA,并使用 OPG、RANKL、COX2、Cbfa1 和醛缩酶特异性引物进行逆转录聚合酶链式反应 (RT-PCR),每个研究分子的扩增均在指数范围内。 结果 本研究结果表明,EMD 处理后 COX2 mRNA 水平显着增加(P <0.05),而对 Cbfa1 mRNA 水平没有影响。 EMD 治疗>或=25 microg/ml 时,RANKL mRNA 水平显着降低(P <0.01)高达 50%。 EMD 治疗对 OPG 水平的影响很小。然而,当 EMD > 或 = 25 microg/ml 时,RANKL/OPG 比率显示出 40% 至 55% 的降低。 结论 这项研究支持 EMD 通过在 RNA 水平上调节对骨代谢至关重要的调节分子来刺激与牙周再生一致的矿化组织形成。
BACKGROUND Enamel matrix derivative (EMD) has demonstrated the potential to stimulate periodontal regeneration with mineralized tissue formation. Molecular regulators of bone metabolism include osteoprotegrin (OPG), receptor activator of nuclear factor kappa B ligand (RANKL), cyclooxygenase 2 (COX2), and core binding factor alpha 1 (Cbfa1). The role of these regulatory molecules within the context of EMD stimulation of mineralized tissue formation is unknown. Therefore, the purpose of this investigation was to explore the effects of EMD on these bone-related molecules in human periodontal ligament (PDL) cells. METHODS Human PDL-cell cultures were treated with EMD (5 to 100 microg/ml) for 24 hours. Total RNA was isolated using phenolchloroform, and reverse transcription-polymerase chain reaction (RT-PCR) was performed using primers specific for OPG, RANKL, COX2, Cbfa1, and aldolase, with amplification in the exponential range for each molecule studied. RESULTS The results of this study show that there is a significant (P <0.05) increase in COX2 mRNA levels with EMD treatment, and no effects were noted on mRNA levels for Cbfa1. RANKL mRNA levels were significantly decreased (P <0.01) up to 50% with EMD treatment > or =25 microg/ml. OPG levels showed minimal effects with EMD treatment. However, the RANKL/OPG ratio showed a 40% to 55% reduction with EMD >or =25 microg/ml. CONCLUSION This study supports a role for EMD stimulation of mineralized tissue formation consistent with periodontal regeneration by modulating regulatory molecules critical to bone metabolism at the RNA level.
DOI: 10.1210/endo.142.12.8536
发表时间: 2001-12
期刊: Endocrinology
影响因子: 4.8
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发表时间: 1990-01-01
影响因子: 3
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DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
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发表时间: 1996
影响因子: 3.5
作者:
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