项目名称: PI3K/Akt信号通路抑制免疫炎症反应对子痫前期的保护作用及机制研究
项目编号: No.81200450
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 医学二处
项目作者: 周建军
作者单位: 南京大学
项目金额: 23万元
中文摘要: 免疫炎症反应在子痫前期发病及脏器损害中起着重要作用。我们前期研究发现:应用早孕期超低剂量脂多糖(LPS)注射激活免疫炎症反应能够诱导出大鼠子痫前期样表型,当阻断PI3K/Akt信号通路后免疫炎症反应加剧,同时子痫前期病情加重。本研究将采用病理、免疫及分子生物学技术,从整体到细胞水平,探讨:1)PI3K/Akt信号通路抑制子痫前期免疫炎症反应;2)PI3K/Akt信号通路抑制子痫前期免疫炎症反应的机制: PI3K/Akt信号通路抑制滋养细胞分泌趋化因子,减少免疫炎症细胞向母胎界面聚集;PI3K/Akt通路激活MKP-1直接抑制MAPKK炎症通路;PI3K/Akt通路同时灭活GSK3β抑制促炎因子NF-κB分泌。3)激活PI3K/Akt信号通路对子痫前期的保护作用。本研究将探索子痫前期免疫炎症机制,从而为临床子痫前期新治疗靶点的研究提供新思路。
中文关键词: 子痫前期;免疫炎症;信号通路;Akt;
英文摘要: Immuno-inflammatory response plays an immportant role in the pathogenesis and organ damage of preeclampisa. Our preliminary study found that an ultra-low-dose LPS injection protocol in early pregnant rats can induce an animal model of preeclampsia, when inhibit the PI3K/Akt signaling pathway, preeclampsia aggravated as immuno-inflammatory response exploded. This study will use pathologic, immunologic, and molecular biologic technologies, using in vivo and in vitro models, in order to explore: 1) PI3K/Akt signaling pathway can inhibit the immuno-inflammatory response of preeclampsia. 2) The mechanisms study: PI3K/Akt inhibits trophoblasts secret chemotactic factors, decreasing the immunocytes accumulated at the maternal-fetal interface; PI3K/Akt directly suppresss the MAPKK inflammatory pathway by activating MKP-1; PI3K/Akt inhibits the expression of NF-κB by inactivating GSK3β. 3) The protective effect for preeclampsia by activation of PI3K/Akt signaling pathway. This study will investigate the immuno-inflammation mechanism of preeclampsia, and can provide new insight into therapeutics target point of preeclampsia.
英文关键词: Preeclampsia;immuno-inflammation;signaling pathway;Akt;