牙体牙髓牙周病学杂志
牙體牙髓牙週病學雜誌
아체아수아주병학잡지
CHINESE JOURNAL OF CONSERVATIVE DENTISTRY
2014年
10期
568-571
,共4页
骨形成蛋白%牙髓细胞%增殖%分化
骨形成蛋白%牙髓細胞%增殖%分化
골형성단백%아수세포%증식%분화
bone morphogenetic protein (BMP)%dental pulp cells%proliferation%differentiation
目的:探讨骨形成蛋白-2(BMP-2)对体外培养的人牙髓细胞(DPCs)增殖和分化的影响。方法:体外培养人DPCs,分别与不同浓度的BMP-2(50、100、200 ng/mL)共同培养;分别检测各组细胞的增殖情况、碱性磷酸酶(alkaline phosphatase,ALP)活性、钙化结节形成量以及牙本质涎磷蛋白(DSPP)、牙本质基质蛋白-1(DMP-1)各成牙本质相关基因的表达水平。结果:50~200 ng/mL 的BMP-2对DPCs的增殖均无明显促进作用;但是,能呈剂量依赖性地提高细胞的ALP活性、促进钙化结节的形成、上调DSPP和DMP-1 mRNA的表达水平,各浓度BMP-2组均高于对照组(P <0.05)。结论:BMP-2对体外培养的人DPCs增殖无明显影响,但可明显促进DPCs的成牙本质细胞方向分化。
目的:探討骨形成蛋白-2(BMP-2)對體外培養的人牙髓細胞(DPCs)增殖和分化的影響。方法:體外培養人DPCs,分彆與不同濃度的BMP-2(50、100、200 ng/mL)共同培養;分彆檢測各組細胞的增殖情況、堿性燐痠酶(alkaline phosphatase,ALP)活性、鈣化結節形成量以及牙本質涎燐蛋白(DSPP)、牙本質基質蛋白-1(DMP-1)各成牙本質相關基因的錶達水平。結果:50~200 ng/mL 的BMP-2對DPCs的增殖均無明顯促進作用;但是,能呈劑量依賴性地提高細胞的ALP活性、促進鈣化結節的形成、上調DSPP和DMP-1 mRNA的錶達水平,各濃度BMP-2組均高于對照組(P <0.05)。結論:BMP-2對體外培養的人DPCs增殖無明顯影響,但可明顯促進DPCs的成牙本質細胞方嚮分化。
목적:탐토골형성단백-2(BMP-2)대체외배양적인아수세포(DPCs)증식화분화적영향。방법:체외배양인DPCs,분별여불동농도적BMP-2(50、100、200 ng/mL)공동배양;분별검측각조세포적증식정황、감성린산매(alkaline phosphatase,ALP)활성、개화결절형성량이급아본질연린단백(DSPP)、아본질기질단백-1(DMP-1)각성아본질상관기인적표체수평。결과:50~200 ng/mL 적BMP-2대DPCs적증식균무명현촉진작용;단시,능정제량의뢰성지제고세포적ALP활성、촉진개화결절적형성、상조DSPP화DMP-1 mRNA적표체수평,각농도BMP-2조균고우대조조(P <0.05)。결론:BMP-2대체외배양적인DPCs증식무명현영향,단가명현촉진DPCs적성아본질세포방향분화。
AIM:To investigate the effects of bone morphogenetic protein-2 (BMP-2)on the biologic ac-tivity of human dental pulp cells (DPCs)in vitro.METHODS:Human DPCs were in vitro cultured .The cells of passage 4 were cultured in normal medium (for cell proliferation assay)or osteogenic medium (for osteogenic differen-tiation assay)containing BMP-2 at 50,100,and 200 ng/mL,respectively.while medium without BMP-2 served as the control.The cell proliferation was examined by MTT method.ALP activity,the quantity of calcified nodules and mRNA expression of DSPP and DMP-1 were evaluated and quantified by RT-PCR.RESULTS:BMP-2 did not show effect on the proliferation of DPCs.BMP-2 at all tested concentrations increased ALP activity (P<0.05),the calcified nodules(P<0.05)and mRNA levels of DSPP and DMP-1 in DPCs (P<0.05)in a dose-and time-dependent manner. CONCLUSION:BMP-2 can promote odontoblast differentiation of DPCs,but has no significant effect on the prolifera-tion of DPCs.