HSP25 affects the proliferation and differentiation of rat dental follicle cells.

HSP25 affects the proliferation and differentiation of rat dental follicle cells.
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HSP25影响大鼠牙囊细胞增殖和分化

DOI:
10.4248/ijos.08020
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发表时间:
2009-06
影响因子:
14.9
通讯作者:
Ling JQ
Ling JQ
中科院分区:
医学1区
文献类型:
--
作者:
Du Y;Gu HJ;Gong QM;Yang F;Ling JQ

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为了检测体内和体外大鼠牙卵泡中Hsp25的表达,并探索Hsp25在大鼠牙齿卵泡细胞增殖和分化(DFC)上的基本机制。 进行了免疫组织化学,以检测在体内第1、3、5、7、9和11的产后大鼠下颌骨中Hsp25的表达。在体外,通过间接免疫荧光测定法检测到DFC中Hsp25的表达。噻唑基蓝四唑溴化物(MTT)测定,流式细胞术和碱性磷酸酶(ALP)测定法被用来识别由不同浓度的重组鼠HSP25的0、1、10、10、50和100 ng/ml对大鼠对大鼠的重组鼠HSP25的介导的时间顺序效应DFCS。 直到出生后第5天,在大鼠的牙卵泡中才检测到Hsp25的表达,但在第11天之前以时间依赖的方式上调。在培养的大鼠DFC的细胞质中检测到Hsp25。在第1、2和3天刺激不同浓度的Hsp25刺激后,DFC的增殖中没有显着差异(p> 0.05)。 HSP25在50 ng/ml和100 ng/mL的浓度下上调了第9天DFC的ALP活性(P <0.05)。 HSP25-免疫反应在牙卵泡发展过程中按时间顺序增加。该蛋白质对细胞增殖没有显着影响,但可能在DFC的胶质细胞/成骨细胞分化中起作用。
AimTo detect the expression of HSP25 in rat dental follicles both in vivo and vitro, and explore the underlying mechanism of HSP25 on the proliferation and differentiation of rat dental follicle cells (DFCs).MethodologyImmunohistochemistry was performed to detect the expression of HSP25 in mandibles of postnatal rats on days 1, 3, 5, 7, 9 and 11 in vivo. In vitro, the expression of HSP25 in DFCs was detected by an indirect immunofluorescence assay. Thiazolyl blue tetrazolium bromide (MTT) assay, flow cytometry and alkaline phosphatase (ALP) assay were used to identify the time‐course effect mediated by different concentrations of recombinant murine HSP25 of 0, 1, 10, 50 and 100 ng/mL on rat DFCs.ResultsExpression of HSP25 was not detected in dental follicles of the rats until day 5 after birth, but became up‐regulated in a time‐dependent manner till day 11. HSP25 was detected in the cytoplasm of cultured rat DFCs. No significant difference could be observed in the proliferation of DFCs after stimulation with different concentrations of HSP25 on days 1, 2 and 3 (P>0.05). HSP25 at concentrations of 50 ng/mL and 100 ng/mL up‐regulated the ALP activity of DFCs on day 9 (P<0.05).ConclusionHSP25‐immunoreactivity increased chronologically during the development of dental follicles. The protein had no significant effect on cell proliferation but may play a role in cementoblast/osteoblast differentiation of DFCs.
DOI: 10.1074/jbc.271.28.16510
发表时间: 1996-07-12
影响因子: 4.8
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