Hypertension:董德利等心肌肥厚/心衰研究获进展

2013-10-29 哈尔滨医科大学 哈尔滨医科大学

高血压、心肌梗死、冠心病等可诱发病理性心肌肥厚。病理性心肌肥厚表现为心脏增大伴心肌细胞丢失和纤维化增加,最终导致扩张性心肌病、心力衰竭和猝死。心肌肥厚和心衰的发生机制和治疗策略研究一直是心血管领域的重要研究课题。哈尔滨医科大学药理学教研室董德利教授课题组在心肌肥厚/心衰研究方面近来取得新进展。 董德利教授课题组近期发现骨形成蛋白-4(BMP-4)是治疗病理性心肌肥厚/心衰的新靶点。BMP-4主要

高血压心肌梗死、冠心病等可诱发病理性心肌肥厚。病理性心肌肥厚表现为心脏增大伴心肌细胞丢失和纤维化增加,最终导致扩张性心肌病、心力衰竭和猝死。心肌肥厚和心衰的发生机制和治疗策略研究一直是心血管领域的重要研究课题。哈尔滨医科大学药理学教研室董德利教授课题组在心肌肥厚/心衰研究方面近来取得新进展。

董德利教授课题组近期发现骨形成蛋白-4(BMP-4)是治疗病理性心肌肥厚/心衰的新靶点。BMP-4主要参与骨骼、软骨和器官发育形成,在正常心肌组织中BMP-4表达水平极低,然而在压力负荷和血管紧张素II诱导的病理性心肌肥厚中,BMP-4表达显著增高。BMP-4本身可诱导心肌细胞肥大、凋亡和心脏纤维化,其机制通过增加心肌细胞NOX4表达及其ROS依赖性通路。抑制BMP-4信号通路可抑制压力负荷诱导的病理性心肌肥厚。相关结果发表于美国心脏学会杂志Hypertension。由于首次发现BMP-4在病理性心肌肥厚中的作用并进行了系统研究,Hypertension杂志将本文作为该期编辑推荐(Editor’s Picks)文章。本研究相关发现已申报2项发明专利(受理中)。

本研究不但在病理性心肌肥厚的发病机制方面提出了新的认识,而且为寻找心肌肥厚/心衰的防治药物开辟了新方向。董德利教授课题组以此为基础,继续深入研究了BMP-4在心肌肥厚离子通道重构中的作用、在心肌肥厚中与其他细胞因子的相互作用以及从中派生出来的小分子化合物的系列药理作用研究,其中BMP4对病理性心肌肥厚中Kv4.3钾通道的作用研究已发表于Biochem Biophys Res Commun,其他研究结果正在陆续投稿中。在以上研究发现基础上,董德利教授提出研究小分子化合物抗病理性心肌肥厚的作用及机制、为抗心衰药物开发提供先导结构的课题,新近获批国家自然基金面上项目资助(资助金额:90万元)。在此基金支持下,有望取得更深入进展。

董德利教授课题组一直以心肌肥厚/心衰的发生机制和治疗策略研究作为重点内容,前期在心脏电生理、心肌肥厚/心衰的发生机制和治疗策略研究方面的系列研究已分别发表在Hypertension, Cardiovasc Res, J Mol Cell Cardiol, Biochemical Journal, Cell Physiol Biochem, Trends Cardiovasc Med等杂志(第一/通讯作者)。目前有关BMP-4与病理性心肌肥厚的研究也是在以上基础上逐步积累起来的。董德利教授课题组的下一步工作将集中在以BMP-4为靶点的心血管系统药物的研发方面,将理论研究应用于实践、基础研究转化向临床,踏踏实实、真正实现转化医学的目标。

原文出处:

Sun B, Huo R, Sheng Y, Li Y, Xie X, Chen C, Liu HB, Li N, Li CB, Guo WT, Zhu JX, Yang BF, Dong DL.Bone morphogenetic protein-4 mediates cardiac hypertrophy, apoptosis, and fibrosis in experimentally pathological cardiac hypertrophy.Hypertension. 2013 Feb;61(2):352-60. doi: 10.1161/HYPERTENSIONAHA.111.00562.【原文下载】

Sun B, Sheng Y, Huo R, Hu CW, Lu J, Li SL, Liu X, Wang YC, Dong DL.Bone morphogenetic protein-4 contributes to the down-regulation of Kv4.3 K+ channels in pathological cardiac hypertrophy.Biochem Biophys Res Commun. 2013 Jul 12;436(4):591-4. doi: 10.1016/j.bbrc.2013.05.113.【原文下载】

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    2015-10-12 科研屌丝

    2013的?

    0

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    2014-03-22 feather89
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