The expression of Popdc2 in cardiac hypertrophy and its effects on pathological hypertrophy
-
摘要: 目的:探讨心脏胚胎基因——Popdc2在小鼠心脏肥大中的差异表达,研究Popdc2对病理性心脏肥大的保护作用。方法:通过游泳锻炼构建小鼠生理性心脏肥大模型,主动脉缩窄术建立病理性心脏肥大模型,采用异丙肾上腺素(PE)诱导心肌细胞病理性肥大,qRT-PCR和Western blot检测Popdc2及相关基因mRNA和蛋白表达水平,TUNEL实验检测各组心肌细胞凋亡比例。结果:成功构建生理性及病理性心脏肥大模型。和对照组相比,生理性心脏肥大中Popdc2 mRNA (3.64±0.29︰1.08±0.44,P<0.01)和蛋白(0.52±0.04︰0.29±0.03,P<0.01)表达升高,而在病理性心脏肥大中Popdc2 mRNA (0.60±0.05︰1.05±0.13,P<0.05)和蛋白(0.03±0.01︰0.07±0.01,P<0.01)表达下降。心肌细胞病理性肥大的过程中Popdc2 mRNA (0.47±0.05︰1.04±0.08,P<0.01)和蛋白(0.53±0.11︰1.22±0.11,P<0.01)表达也下降。过表达Popdc2可减少病理性心脏肥大过程中的细胞凋亡(0.95±0.07︰1.63±0.11,P<0.01)、病理性标志基因心房利钠肽、B型利钠肽和纤维化蛋白CollagenⅠ、CollagenⅡ的mRNA表达。结论:Popdc2在生理性和病理性心脏肥大中呈现出不一致的变化趋势,且Popdc2可改善心肌细胞的病理性肥大,可能成为区别2种不同心脏肥大分子标志物及成为拮抗病理性心脏肥大、心力衰竭的作用靶点。Abstract: Objective: To explore the expression of Popdc2 in cardiac hypertrophy in mice, and to study the effect of Popdc2 on pathological cardiomyocytes hypertrophy.Method: Physiological cardiac hypertrophy models wre established by swimming training and pathological cardiac hypertrophy models were established by transverse aortic coarctation. Pathological cardiac hypertrophy was induced by isoproterenol (PE) in vitro. Cells apoptosis were detected with TUNEL experiments.The mRNA and protein of ANP, BNP, Popdc2 collagen Ⅰ and Ⅱ (Collagen Ⅰ and Collagen Ⅱ) expression was determined by qRT-PCR and western blot.Result: Physiological and pathological cardiac hypertrophy models were successfully constructed. The expression of Popdc2 mRNA (3.64±0.29 vs 1.08±0.44, P<0.01) and protein (0.52±0.04 vs 0.29±0.03, P<0.01) was increased in physiological cardiac hypertrophy, and the expression of Popdc2 mRNA (0.60±0.05 vs 1.05±0.13, P<0.05) and protein (0.03±0.01 vs 0.07±0.01, P<0.01) was decreased in pathological cardiac hypertrophy in vivo. The expression of Popdc2 mRNA (0.47±0.05 vs 1.04±0.08, P<0.01) and protein (0.53±0.11 vs 1.22±0.11, P<0.01) was decreased in pathological cardiomyocytes hypertrophy in vitro. The cell apoptosis rate (0.95±0.07 vs 1.63±0.11, P<0.01) was reduced and the expression of ANP, BNP, Collagen Ⅰ and Ⅱ mRNA was decreased in over-expression of Ad-Popdc2 group than that in control group.Conclusion: The expression of Popdc2 is not consistent in physiological and pathological cardiac hypertrophy, and overexprssion of Popdc2 ameliorate the pathological cardiac hypertrophy. Popdc2 maybe as a molecular marker between two different cardiac hypertrophy model and become the target of antagonistic pathological cardiac hypertrophy and heart failure.
-
Key words:
- cardiac hypertrophy /
- transverse aortic coarctation /
- Popdc2 /
- apoptosis
-
[1] Mudd JO, Kass DA. Tackling heart failure in the twenty-first century[J]. Nature, 2008, 451(7181):919-928.
[2] Mozaffarian D, Benjamin EJ, Go AS, et al. Heart disease and stroke statistics 2015 update:A report from the American heart association[J]. Circulation, 2015, 131(4):e29-322.
[3] Veronique L, Roger Susan A, Weston MS, et al. Trends in Heart Failure Incidence and Survival in a Community-Based Population[J]. JAMA, 2004, 292(3):344-350.
[4] Johnson FL. Pathophysiology and etiology of heart failure[J]. Cardiol Clin, 2014, 32(1):9-19.
[5] 黄炯华, 戴文军, 林育辉, 等.肾脏去神经联合美托洛尔对自发性高血压大鼠的血压和心脏肥厚的作用[J].临床心血管病杂志, 2016, 32(11):1159-1163.
[6] Fleg JL, Cooper LS, Borlaug BA, et al. Exercise training as therapy for heart failure:current status and future directions[J]. Circ Heart Fail, 2015, 8(1):209-220.
[7] Bostrom P, Mann N, Wu J, et al. C/EBPbeta controls exercise-induced cardiac growth and protects against pathological cardiac remodeling[J].Cell, 2010, 143(7):1072-1083.
[8] McMullen JR, Jennings GL. Differences between pathological and physiological cardiac hypertrophy:Novel therapeutic strategies to treat heart failure[J]. Clin Exp Pharmacol Physiol, 2007, 34(4):255-262.
[9] Chakraborty S, Sengupta A, Yutzey KE. Tbx20 promotes cardiomyocyte proliferation and persistence of fetal characteristics in adult mouse hearts[J]. J Mol Cell Cardiol, 2013, 62:203-213.
[10] Andrée B, Hillemann T, Kessler-Icekson G, et al. Isolation and characterization of the novel popeye gene family expressed in skeletal muscle and heart[J]. Dev Bio, 2000, 223(2):371-382.
[11] Kirchmaier BC, Poon KL, Schwerte T, et al. The popeye domain containing 2(popdc2) gene in zebrafish is required for heart and skeletal muscle development[J]. Dev Bio, 2012, 363(2):438-450.
[12] 魏飞宇, 吕丽, 马方方, 等. Popdc2表达下调通过Akt磷酸化促进新生大鼠心肌细胞增殖[J]. 南京医科大学学报(自然科学版), 2015, 35(7):938-944.
[13] Gingold-Belfer R, Bergman M, Alcalay Y, et al. Popeye domain-containing 1 is down-regulated in failing human hearts[J]. Int J Mol Med, 2011, 27(1):25-31.
[14] Taniike M, Yamaguchi O, Tsujimoto I, et al. Apoptosis signal regulating kinase 1/p38 signaling pathway negatively regulates physiological hypertrophy[J]. Circulation, 2008, 117(4):545-552.
[15] Achttien RJ, Staal JB, van der Voort S, et al. Exercise-based cardiac rehabilitation in patients with chronic heart failure:a Dutch practice guideline[J]. Neth Heart J, 2015, 23(1):6-17.
[16] Bostrom P, Mann N, Wu J, et al. C/EBPbeta controls exercise-induced cardiac growth and protects against pathological cardiac remodeling[J]. Cell, 2010, 143(7):1072-1083.
[17] Ellison GM, Waring CD, Vicinanza C, et al. Physiological cardiac remodelling in response to endurance exercise training:cellular and molecular mechanisms[J]. Heart, 2012, 98(1):5-10.
[18] Maillet M, van Berlo JH, Molkentin JD. Molecular basis of physiological heart growth:fundamental concepts and new players[J]. Nat Rev Mol Cell Biol, 2013, 14(1):38-48.
[19] McMullen JR, Shioi T, Zhang L, et al. Phosphoinositide 3-kinase(p110alpha) plays a critical role for the induction ofphysiological, but not pathological, cardiac hypertrophy[J]. Proc Natl Acad Sci USA, 2003, 100(21):12355-12360.
[20] Bernardo BC, Weeks KL, Pretorius L, et al. Molecular distinction between physiological and pathological cardiac hypertrophy:experimental findings and therapeutic strategies[J]. Pharmacol Ther, 2010, 128(1):191-227.
[21] Liu X, Xiao J, Zhu H, et al. miR-222 is necessary for exercise-induced cardiac growth and protects against pathological cardiac remodeling[J]. Cell Metab, 2015, 21(4):584-595.
[22] Bersell K, Arab S, Haring B, et al. Neuregulin1/ErbB4 signaling induces cardiomyocyte proliferation and repair of heart injury[J]. Cell, 2009, 138(2):257-270.
[23] Xiao J, Chen P, Qu Y, et al. Telocytes in exercise-induced cardiac growth[J]. J Cell Mol Med, 2016, 20(5):973-979.
[24] 夏盼盼, 居维竹, 漆润娣, 等.高血压与年龄对大鼠左心室纤维化影响的研究[J]. 临床心血管病杂志, 2016, 32(7):731-734.
[25] Kirchmaier BC, Poon KL, Schwerte T, et al. The popeye domain containing 2(popdc2) gene in zebrafish is required for heart and skeletal muscle development[J]. Dev Bio, 2012, 363(2):438-450.
[26] Nishikimi T, Kuwahara K, Nakao K. Current biochemistry, molecular biology, and clinical relevance of natriuretic peptides[J]. J Cardiol, 2011, 57(2):131-140.
计量
- 文章访问数: 26
- PDF下载数: 11
- 施引文献: 0