Protective effect of heat shock protein 27 using protein transduction domain-mediated delivery on ischemia/reperfusion heart injury

Jun Hye Kwon, Jin Bae Kim, Kyung Hye Lee, Seok Min Kang, Namsik Chung, Yangsoo Jang, Ji Hyung Chung

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34 Citations (Scopus)


Heat shock protein 27 (HSP27) is an intracellular stress protein with the cytoprotective effect for a variety of noxious stresses. In this study, using a protein delivery system, we demonstrated the potential cytoprotective effect of HSP27 as a therapeutic protein in cardiac cells and ischemia/reperfusion animal model. We constructed a recombinant HSP27 fused to the protein transduction domain (PTD) derived from HIV-1 TAT protein. Purified recombinant TAT-HSP27 protein was efficiently delivered to H9c2 cells, and its transduction showed cytoprotective effect against the hypoxic stress. Moreover, transduction of TAT-HSP27 also attenuated hypoxia-induced apoptosis, which was accompanied by reduced caspase-3 activity. In addition, intraperitoneal injection of TAT-HSP27 into rat resulted in efficient protein transduction in heart tissues, decreased infarcted myocardium (control vs TAT-HSP27, 39.1% vs 29.5%, P < 0.05) and preserved heart function (fractional shortening, 15.6% vs 33.4%, P < 0.05), as determined at 7 d after I/R. These results suggest that the PTD-mediated delivery of HSP27 protein may represent a potential therapeutic strategy as protein drug for ischemic heart diseases.

Original languageEnglish
Pages (from-to)399-404
Number of pages6
JournalBiochemical and Biophysical Research Communications
Issue number2
Publication statusPublished - 2007 Nov 16


All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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