华西口腔医学杂志
華西口腔醫學雜誌
화서구강의학잡지
WEST CHINA JOURNAL OF STOMATOLOGY
2015年
2期
130-134
,共5页
人牙周膜成纤维细胞%肌成纤维细胞%α-平滑肌肌动蛋白%细胞外基质
人牙週膜成纖維細胞%肌成纖維細胞%α-平滑肌肌動蛋白%細胞外基質
인아주막성섬유세포%기성섬유세포%α-평활기기동단백%세포외기질
human periodontal fibroblast%myofibroblast%α-smooth muscle actin%extracellular matrix
目的:??体外实验研究牙周膜肌成纤维细胞(MFB)的作用特点。方法??体外培养人牙周膜成纤维细胞(hPDLFs),采用转化生长因子-β1(TGF-β1)诱导成纤维细胞向MFB转化。MFB为实验组,以hPDLFs为对照,连续培养两组细胞,按0、12、24、48、72?h共5个时间点终止培养收样。免疫细胞化学检测MFB标记物α-平滑肌肌动蛋白(α-SMA)的表达情况,检测实验组纤维粘连蛋白(FN)以明确细胞间接触作用情况。逆转录聚合酶链式反应(RT-PCR)检测α-SMA mRNA、胶原(Col)ⅠmRNA、ColⅢ?mRNA的表达情况,免疫印迹法检测α-SMA、ColⅠ蛋白的表达情况,用以比较两组细胞分泌细胞外基质情况。结果??实验组α-SMA持续稳定表达,从0?h开始表达均显著高于对照组(P<0.001);细胞间FN阳性表达,提示MFB之间有细胞突触相互连接。从24?h开始,实验组ColⅠ、ColⅢ的表达均显著高于对照组(P<0.001)。结论??牙周膜MFB持续高表达α-SMA并且可能通过FN相互作用。MFB具有大量分泌细胞外基质的能力。
目的:??體外實驗研究牙週膜肌成纖維細胞(MFB)的作用特點。方法??體外培養人牙週膜成纖維細胞(hPDLFs),採用轉化生長因子-β1(TGF-β1)誘導成纖維細胞嚮MFB轉化。MFB為實驗組,以hPDLFs為對照,連續培養兩組細胞,按0、12、24、48、72?h共5箇時間點終止培養收樣。免疫細胞化學檢測MFB標記物α-平滑肌肌動蛋白(α-SMA)的錶達情況,檢測實驗組纖維粘連蛋白(FN)以明確細胞間接觸作用情況。逆轉錄聚閤酶鏈式反應(RT-PCR)檢測α-SMA mRNA、膠原(Col)ⅠmRNA、ColⅢ?mRNA的錶達情況,免疫印跡法檢測α-SMA、ColⅠ蛋白的錶達情況,用以比較兩組細胞分泌細胞外基質情況。結果??實驗組α-SMA持續穩定錶達,從0?h開始錶達均顯著高于對照組(P<0.001);細胞間FN暘性錶達,提示MFB之間有細胞突觸相互連接。從24?h開始,實驗組ColⅠ、ColⅢ的錶達均顯著高于對照組(P<0.001)。結論??牙週膜MFB持續高錶達α-SMA併且可能通過FN相互作用。MFB具有大量分泌細胞外基質的能力。
목적:??체외실험연구아주막기성섬유세포(MFB)적작용특점。방법??체외배양인아주막성섬유세포(hPDLFs),채용전화생장인자-β1(TGF-β1)유도성섬유세포향MFB전화。MFB위실험조,이hPDLFs위대조,련속배양량조세포,안0、12、24、48、72?h공5개시간점종지배양수양。면역세포화학검측MFB표기물α-평활기기동단백(α-SMA)적표체정황,검측실험조섬유점련단백(FN)이명학세포간접촉작용정황。역전록취합매련식반응(RT-PCR)검측α-SMA mRNA、효원(Col)ⅠmRNA、ColⅢ?mRNA적표체정황,면역인적법검측α-SMA、ColⅠ단백적표체정황,용이비교량조세포분비세포외기질정황。결과??실험조α-SMA지속은정표체,종0?h개시표체균현저고우대조조(P<0.001);세포간FN양성표체,제시MFB지간유세포돌촉상호련접。종24?h개시,실험조ColⅠ、ColⅢ적표체균현저고우대조조(P<0.001)。결론??아주막MFB지속고표체α-SMA병차가능통과FN상호작용。MFB구유대량분비세포외기질적능력。
Objective??To?investigate?the?functions?of?human?periodontal?myofibroblast?(MFB)?in vitro.Methods??Human?periodontal fibroblast (hPDLFs) was cultured and induced to MFB by transforming growth factor-β1 (TGF-β1). MFB was denoted?as?the?experimental?group,?whereas?the?hPDLFs?was?the?control?group.?The?groups?were?continuously?cultured?and?harvested at 0, 12, 24, 48, and 72 h. The MFB marker α-smooth muscle actin (α-SMA) was examined by immunocytochemistry. The?expression?of?fibronectin?(FN)?between?MFB?was?examined?by?immunocytochemistry?to?detect?the?MFB?contact?relationship.?The mRNA expression levels of α-SMA, collagen (Col )Ⅰ,?and?Col?Ⅲ?were?measured?by?reverse?transcription-polymerase?chain reaction (RT-PCT) to analyze extracellular matrix secretion. The protein expression levels of α-SMA and ColⅠ?were?also?assessed?by?Western?blot.?Results The experimental group had significantly higher α-SMA expression than the control group?at?0?h?(P<0.001).?A?positive?expression?of?FN?was?found?between?MFB.?The?experimental?group?had?significantly?higher?expression?levels?of?Col?I?and?Col?Ⅲ?than?the?control?group?at?24?h?(P<0.001).?Conclusion??Human?periodontal?MFB?pre-sents a continuous, high expression of α-SMA. MFB could interact through FN. MFB is significantly capable of extracellular matrix?secretion.