J Clin Periodontol:富含白细胞和血小板的纤维蛋白调控人牙龈成纤维细胞早期伤口愈合相关基因的表达

2020-06-25 MedSci原创 MedSci原创

富含白细胞和血小板的纤维蛋白(L-PRF)是一种富含白细胞和血小板的血源性生物材料,嵌入高密度纤维蛋白网状结构中,可被压缩成膜,应用于刺激组织再生和伤口愈合,特别是在口腔中。

富含白细胞和血小板的纤维蛋白(L-PRF)是一种富含白细胞和血小板的血源性生物材料,嵌入高密度纤维蛋白网状结构中,可被压缩成膜,应用于刺激组织再生和伤口愈合,特别是在口腔中。本研究旨在确定手术过程中L-PRF中的生长因子和细胞对成纤维细胞的影响。

研究通过RT-qPCR检测6个供体的L-PRF对正常人牙龈成纤维细胞中84个伤口愈合基因表达的影响。

结果发现,L-PRF可以显著上调33个(39%)成纤维细胞基因的表达,包括白细胞介素、肌成纤维细胞、细胞外基质和血管生成相关基因、基质金属蛋白酶-1和-3。 L-PRF调节成纤维细胞基因的表达具有时间和剂量依赖性,其作用由有丝分裂原激活的蛋白激酶ERK1/2、JNK和p38介导。L-PRF还能促进成纤维细胞伤口闭合,具有促进成纤维细胞诱导内皮血管形成的作用。L-PRF诱导成纤维细胞的基因表达的变化与早期人和猪伤口中观察到的相似。

因此,L-PRF可以通过调节相关基因表达,进而调节伤口愈合中牙龈成纤维细胞功能。

原文出处:

Jiarui Bi ,Leucocyte‐ and platelet‐rich fibrin regulates expression of genes related to early wound healing in human gingival fibroblasts. Journal of clinical Periodontology, 2020 June, doi: 10.1111/jcpe.13293

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    2020-08-25 feather89
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巨噬细胞和成纤维细胞是心梗后愈合的两个主要细胞类型,参与心肌重塑和纤维化过程。本研究的目的旨在评估巨噬细胞表达纤维化基因的潜能和在心梗后心肌纤维化中的直接作用。本研究采用的小鼠模型是LysM(Cre/+);ROSA26(EYFP/+),其中黄色荧光蛋白(YFP)的表达局限在髓系以鉴定巨噬细胞来源的成纤维细胞,结果发现心梗后YFP阳性心脏细胞明显表达纤维化的标志物I型胶原、脯氨酰-4-羟化酶、成纤维

Sci Rep:尿路上皮性膀胱癌的成纤维细胞确定了与临床结果相关的基质表型

在尿路上皮性膀胱癌(UBC)中,肿瘤与基质细胞的互作关注很少。虽然最近的研究指向了不同的成纤维细胞亚群,但是联系到UBC患者生存的成纤维细胞标记的综合性分析仍旧还没有研究。最近,有研究人员通过对5个选择的成纤维细胞标记的免疫组化分析,调查了它们与344名UBC患者的生存和组织病理特性的相关性情况,其中包括了肌肉浸润案例和非肌肉浸润案例。数据表明组合基质标记在鉴定预后患者亚群中要比单个标记分析更加合