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J Endod:碱性成纤维生长因子调节人牙髓细胞增殖、分化和基质形成相关基因蛋白表达的研究

2017-04-24 lishiting MedSci原创

在多种组织内,碱性成纤维生长因子(bFGF)对细胞增殖、分化和细胞外基质的更新发挥着不同作用。然而,bFGF对牙髓细胞的作用却知之甚少。这项研究是为了阐明bFGF是否会影响人牙髓细胞(HDPCs)的分化和基质更新以及相关基因蛋白的表达,并探讨丝裂原活化蛋白激酶(MEK)/胞外信号调节激酶(ERK)信号通路在这一过程中发挥的作用。

在多种组织内,碱性成纤维生长因子(bFGF)对细胞增殖、分化和细胞外基质的更新发挥着不同作用。然而,bFGF对牙髓细胞的作用却知之甚少。这项研究是为了阐明bFGF是否会影响人牙髓细胞(HDPCs)的分化和基质更新以及相关基因蛋白的表达,并探讨丝裂原活化蛋白激酶(MEK)/胞外信号调节激酶(ERK)信号通路在这一过程中发挥的作用。

研究通过逆转录多聚酶链反应检测HDPCs中FGFR1和FGFR2的表达情况。随后,向HDPCs施加不同浓度bFGF刺激,3-(4,5-dimethyl-thiazol-2-yl)-2,5-diphenyl tetrazolium bromide测定细胞增殖情况;碱性磷酸酶(ALP)检测细胞分化情况;逆转录多聚酶链反应检测细胞周期蛋白B1和金属蛋白酶组织抑制剂(TIMP)1的mRNA表达变化;Western blot检测cdc2, TIMP-1, TIMP-2和I型胶原蛋白表达情况。另外,使用U0126检测MEK/ERK信号通路活性变化。

结果显示,HDPCs表达FGFR1和FGFR2。bFGF浓度为50-250 ng/mL时,细胞活力正常。10-500 ng/mL的bFGF会抑制ALP蛋白表达和酶活性。然而,在相似的浓度,bFGF却可以促进HDPCs内cdc2、细胞周期蛋白B1和TIMP-1 mRNA和蛋白的表达,但部分抑制I型胶原的表达,而对TIMP-2没有明显影响。向细胞施加U0126 (MEK/ERK抑制剂)刺激,可以减弱bFGF诱导的细胞周期蛋白B1、cdc2和TIMP-1的表达上调。

结论:bFGF可能通过激活FGFR调节HDPCs生长,进而参与调控牙髓的修复和再生。另外,bFGF部分通过MEK/ERK信号通路,促进cdc2、细胞周期蛋白B1和TIMP-1的表达,并部分抑制ALP活性。

原始出处:

Chang YC, Chang MC, et al. Basic Fibroblast Growth Factor Regulates Gene and Protein Expression Related to Proliferation, Differentiation, and Matrix Production of Human Dental Pulp Cells. J Endod. 2017 Apr 14. pii: S0099-2399(17)30073-0. doi: 10.1016/j.joen.2017.01.024.

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    2018-01-13 mnda
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    2017-06-13 jxrzshh
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    2017-04-25 chengjn
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  7. [GetPortalCommentsPageByObjectIdResponse(id=1724342, encodeId=30fd1e24342b4, content=<a href='/topic/show?id=e1f56e68935' target=_blank style='color:#2F92EE;'>#牙髓细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67689, encryptionId=e1f56e68935, topicName=牙髓细胞)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=7f2d33606535, createdName=mnda, createdTime=Sat Jan 13 03:12:00 CST 2018, time=2018-01-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2029296, encodeId=f8b32029296bc, content=<a href='/topic/show?id=9c52e253016' target=_blank style='color:#2F92EE;'>#相关基因#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72530, encryptionId=9c52e253016, topicName=相关基因)], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTKCRibWHQArPHdSkqP90U1HwwqlGeU7BUgzY240D3v2ibBDJ09ybkGkwOjxz7qRmngZaGlK1taX6hfA/132, createdBy=2e772500094, createdName=小华子, createdTime=Tue Aug 22 10:12:00 CST 2017, time=2017-08-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1757045, encodeId=89451e57045fa, content=<a href='/topic/show?id=103b421e0e8' target=_blank style='color:#2F92EE;'>#基质#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=42170, encryptionId=103b421e0e8, topicName=基质)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=281337296540, createdName=ms7899726347904398, createdTime=Sat Dec 30 13:12:00 CST 2017, time=2017-12-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1669572, encodeId=01e816695e29d, content=<a href='/topic/show?id=c7ca6e660ab' target=_blank style='color:#2F92EE;'>#牙髓#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=68, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67660, encryptionId=c7ca6e660ab, topicName=牙髓)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=5eeb26562774, createdName=jxrzshh, createdTime=Tue Jun 13 21:12:00 CST 2017, time=2017-06-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1468169, encodeId=5e9c14681699c, content=<a href='/topic/show?id=71c810212946' target=_blank style='color:#2F92EE;'>#髓细胞#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=70, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102129, encryptionId=71c810212946, topicName=髓细胞)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=69e46898758, createdName=chengjn, createdTime=Tue Apr 25 15:12:00 CST 2017, time=2017-04-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1517952, encodeId=1687151e952df, content=<a href='/topic/show?id=aa2269613cd' target=_blank style='color:#2F92EE;'>#生长因子#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=69613, encryptionId=aa2269613cd, topicName=生长因子)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3df311117154, createdName=12499e01m50暂无昵称, createdTime=Tue Apr 25 15:12:00 CST 2017, time=2017-04-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1532649, encodeId=01e51532649bf, content=<a href='/topic/show?id=f33388695c2' target=_blank style='color:#2F92EE;'>#蛋白表达#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=65, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=88695, encryptionId=f33388695c2, topicName=蛋白表达)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=d79512374813, createdName=xuyu, createdTime=Tue Apr 25 15:12:00 CST 2017, time=2017-04-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1540888, encodeId=a26f1540888cf, content=<a href='/topic/show?id=ba2ee78630b' target=_blank style='color:#2F92EE;'>#细胞增殖#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77863, encryptionId=ba2ee78630b, topicName=细胞增殖)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f58613291856, createdName=晓辰, createdTime=Tue Apr 25 15:12:00 CST 2017, time=2017-04-25, status=1, ipAttribution=)]
    2017-04-25 xuyu
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