J Endod:暴露于牙龈卟啉单胞菌和聚合梭杆菌的人牙髓细胞炎症小体调控异常

2020-07-15 lishiting MedSci原创

这篇研究的目的是为了评估已知的牙髓细菌以及牙周致病菌聚合梭杆菌(Fn)和牙龈卟啉单胞菌(Pg)体外对人牙髓细胞(HDPCs)炎症小体相关因子和IL-1β表达水平的影响。

白细胞介素1β (IL-1β)是一种主要的促炎症因子,在牙髓感染中起到重要的调控作用。IL-1β以及其他细胞因子和趋化因子受到多蛋白复合物名为炎症小体的调控,研究显示其参与调控牙髓的炎症反应。这篇研究的目的是为了评估已知的牙髓细菌以及牙周致病菌聚合梭杆菌(Fn)和牙龈卟啉单胞菌(Pg)体外对人牙髓细胞(HDPCs) NLRP3和AIM2炎症小体, 炎症小体调节蛋白, POP1, CARD16和TRIM16, 和炎症小体组成, ASC和Caspase 1以及IL-1β表达水平的影响。

研究将HDPCs分别暴露于Fn或Pg下,又或2者联合刺激下,并额外施以5 mM三磷酸腺苷(ATP)刺激30 min后孵育24小时。E.coli LPS刺激作为对照。通过RT-PCR评估NLRP3,AIM2, POP1, CARD16, TRIM16, ASC和Caspase 1以及IL-1β的表达水平变化。通过免疫细胞化学和ELISA检测促-和成熟IL-1β的出现和表达水平。

结果显示,在所有暴露组中NLRP3和AIM2表达均上调。IL-1β在所有组中均表达上调,除了Fn+ATP。Fn或Pg不论添加ATP与否,CARD16表达均明显下调,然而,POP1仅在Pg和E.coli LPS+ATP组中表达下调。单独使用Pg能够显著上调细胞内促-和成熟IL-1β的表达水平。

结论:Pg和Fn在添加ATP的情况下可能通过失调炎症小体及其调节因子对IL-1β诱导的牙髓炎症起到重要调控作用。

原始出处

Kübra Aral, Michael R Milward, et al. Dysregulation of Inflammasomes in Human Dental Pulp Cells Exposed to Porphyromonas gingivalis and Fusobacterium nucleatum. J Endod., 2020 Jun 18;S0099-2399(20)30398-8. doi: 10.1016/j.joen.2020.06.008.

 

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    2020-11-25 jxrzshh
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    2020-11-12 bioon1
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    2020-07-31 mnda
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  6. [GetPortalCommentsPageByObjectIdResponse(id=1669868, encodeId=c6301669868cd, content=<a href='/topic/show?id=c7ca6e660ab' target=_blank style='color:#2F92EE;'>#牙髓#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, 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=Wed Nov 25 09:58:31 CST 2020, time=2020-11-25, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2046596, encodeId=fa40204659609, content=<a href='/topic/show?id=4499e795592' target=_blank style='color:#2F92EE;'>#细胞炎症#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=77955, encryptionId=4499e795592, topicName=细胞炎症)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=ca20190, createdName=wushaoling, createdTime=Thu Jan 28 10:58:31 CST 2021, time=2021-01-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1975766, encodeId=655519e5766fb, content=<a href='/topic/show?id=6cf1624888e' target=_blank style='color:#2F92EE;'>#梭杆菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=53, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=62488, encryptionId=6cf1624888e, topicName=梭杆菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=395f25, createdName=bioon1, createdTime=Thu Nov 12 02:58:31 CST 2020, time=2020-11-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1724361, encodeId=0d3d1e243619d, 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=52, 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=Fri Jul 31 03:58:31 CST 2020, time=2020-07-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1361084, encodeId=c0f51361084f0, content=<a href='/topic/show?id=c1006e72663' target=_blank style='color:#2F92EE;'>#牙龈卟啉单胞菌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=67726, encryptionId=c1006e72663, topicName=牙龈卟啉单胞菌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=6f7a159, createdName=3631173, createdTime=Thu Jul 16 23:58:31 CST 2020, time=2020-07-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1468214, encodeId=a9b8146821478, 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=58, 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=Thu Jul 16 23:58:31 CST 2020, time=2020-07-16, status=1, ipAttribution=)]
    2020-07-16 chengjn

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