Journal of Molecular Histology

, Volume 44, Issue 5, pp 565–573

Expression and redistribution of β-catenin in the cardiac myocytes of left ventricle of spontaneously hypertensive rat

  • Qiaoli Zheng
  • Ping Chen
  • Zeqing Xu
  • Faqian Li
  • Xian Ping Yi
Original Paper

DOI: 10.1007/s10735-013-9507-6

Cite this article as:
Zheng, Q., Chen, P., Xu, Z. et al. J Mol Hist (2013) 44: 565. doi:10.1007/s10735-013-9507-6

Abstract

Beta-catenin is not only an adhering junction protein, but also the central player of the canonical Wnt signalling pathway. In order to investigate the roles of β-catenin in the mechanism of myocardial hypertrophy, we determined the expression and distribution of β-catenin in the cardiomyocytes of spontaneously hypertensive heart failure (SHHF) rats and age-matched Wistar-Kyoto (WKY) rats. We identified the reducing of β-catenin expression in the membrane protein fraction but increasing in the nuclear protein in the 6 and 12 month-old SHHF rats as compared with the age-matched WKY rats by Western blotting. Immunolabeling of β-catenin colocalized with cadherin at the intercalated disc sites and showed nuclear accumulation in myocytes of SHHF rats. We also revealed that the association between glycogen synthase kinase-3β and β-catenin had weakened in the 6 month-old SHHF rats as compared with the age-matched WKY rats by immunoprecipitation. These findings suggested that nuclear translocation of β-catenin might play important roles in regulating signal transduction in the decompensated hypertrophy stage.

Keywords

Cardiac hypertrophy Beta-catenin Cadherin Glycogen synthase kinase-3β (GSK3β) Signal transduction 

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Qiaoli Zheng
    • 1
  • Ping Chen
    • 2
  • Zeqing Xu
    • 1
  • Faqian Li
    • 3
  • Xian Ping Yi
    • 1
  1. 1.Department of PathologySun Yat-sen University the Fifth Affiliated HospitalZhuhaiPeople’s Republic of China
  2. 2.Department of PathologyJiangmen Central HospitalJiangmenPeople’s Republic of China
  3. 3.Department of Pathology and Laboratory MedicineUniversity of Rochester Medical CenterRochesterUSA

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