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首页> 外文期刊>Journal of biomedical materials research. Part B, Applied biomaterials. >Alginate-poly-L-lysine microcapsule biocompatibility: a novel RT-PCR method for cytokine gene expression analysis in pericapsular infiltrates.
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Alginate-poly-L-lysine microcapsule biocompatibility: a novel RT-PCR method for cytokine gene expression analysis in pericapsular infiltrates.

机译:海藻酸盐-聚-L-赖氨酸微胶囊的生物相容性:一种新型RT-PCR方法,用于分析囊周浸润细胞因子的基因表达。

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摘要

Transplantation of microencapsulated islets of Langerhans is impaired by a pericapsular host reaction that eventually induces graft failure. We are studying the role of cytokines in the pathogenesis of this reaction, using the model of alginate-polylysine microcapsule implantation in rat epididymal fat pads. The objectives were: (1) to develop a method to measure, by semiquantitative PCR, TGF-beta1 gene expression in fat pad pericapsular infiltrates, and (2) to use this method to evaluate TGF-beta1 gene expression 14 days after microcapsule implantation. TGF-beta1 mRNA level was significantly higher in pericapsular infiltrate cells than in nonimplanted tissue cells and saline-injected tissue cells (p < 0.0001 and p < 0.01, respectively). There was no significant difference between the TGF-beta1 mRNA levels of the two types of controls (p = 0.0945). These results suggest that TGF-beta1 plays a role in the pathogenesis of the pericapsular reaction. The method developed can be used to study the role of other fibrogenic cytokines potentially involved. This will shed light on the mechanisms underlying the pericapsular reaction and will serve as a basis for the development of strategies to control this reaction. Copyright 1999 John Wiley & Sons, Inc.
机译:朗格汉斯微囊化胰岛的移植受囊周宿主反应的损害,该反应最终导致移植失败。我们正在使用大鼠附睾脂肪垫中藻酸盐-聚赖氨酸微胶囊植入模型研究细胞因子在此反应的发病机理中的作用。目的是:(1)开发一种通过半定量PCR测量脂肪垫包囊浸润组织中TGF-beta1基因表达的方法,以及(2)使用该方法评估微囊植入后14天的TGF-beta1基因表达。在囊周浸润细胞中,TGF-β1mRNA水平显着高于未植入组织细胞和注射生理盐水的组织细胞(分别为p <0.0001和p <0.01)。两种类型的对照的TGF-beta1 mRNA水平之间无显着差异(p = 0.0945)。这些结果表明TGF-β1在包膜周围反应的发病机理中起作用。开发的方法可用于研究可能涉及的其他纤维生成细胞因子的作用。这将阐明包膜周围反应的潜在机制,并将作为开发控制该反应的策略的基础。版权所有1999 John Wiley&Sons,Inc.

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