Innate Immun:MMP9在LPS诱导的炎症中起保护作用,可为根尖周炎的预防和治疗提供了新的方法

2020-10-07 MedSci原创 MedSci原创

基质金属蛋白酶(MMP)家族广泛参与了炎症过程中牙髓和根尖组织的破坏。MMP9与口腔炎症密切相关。尽管如此,MMP9在口腔炎症过程中的具体功能及其机制尚不十分清楚。

基质金属蛋白酶(MMP)家族广泛参与了炎症过程中牙髓和根尖组织的破坏。MMP9与口腔炎症密切相关。尽管如此,MMP9在口腔炎症过程中的具体功能及其机制尚不十分清楚。

我们之前的研究发现,在实验诱导的根尖周炎中,MMP9基因敲除小鼠与野生型小鼠相比,炎症更为严重。此外,与野生型小鼠相比,MMP9基因敲除小鼠牙槽骨破坏的病理现象更加明显。因此,我们提出MMP9具有 "抗炎"特性。

 

本研究旨在探究MMP9对炎症反应以及对骨形成和骨破坏的影响。qRT-PCR和Western blot显示,MMP9在LPS刺激的MC3T3-E1细胞中减少了IL-1β、TNF-α、RANK、RANKL、TLR2和TLR4的产生。同时,在LPS刺激的细胞中,OPG和OCN的表达量因MMP9而增加。

综上所述,该研究结果表明,MMP9在LPS诱导的炎症中起保护作用,从而为根尖周炎的预防和治疗提供了新的线索。

 

原始出处:

 

Hongzhe ZhangLingshuang Liu, et al., MMP9 protects against LPS-induced inflammation in osteoblasts. Innate Immun. 2020 May;26(4):259-269. doi: 10.1177/1753425919887236. 

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    2021-03-16 liye789132251
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    2021-01-05 neizongke
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