Hypoxic preconditioning enhances the benefit of cardiac progenitor cell therapy for treatment of myocardial infarction by inducing CXCR4 expression

Yao Liang Tang, Wuqiang Zhu, Min Cheng, Lijuan Chen, John Zhang, Tao Sun, Raj Kishore, M. Ian Phillips, Douglas W. Losordo, Gangjian Qin

Research output: Contribution to journalArticle

260 Citations (Scopus)

Abstract

Myocardial infarction rapidly depletes the endogenous cardiac progenitor cell pool, and the inefficient recruitment of exogenously administered progenitor cells limits the effectiveness of cardiac cell therapy. Recent reports indicate that interactions between the CXC chemokine stromal cell-derived factor 1 and its receptor CXC chemokine receptor 4 (CXCR4) critically mediate the ischemia-induced recruitment of bone marrow-derived circulating stem/progenitor cells, but the expression of CXCR4 in cardiac progenitor cells is very low. Here, we studied the influence of hypoxia on CXCR4 expression in cardiac progenitor cells, on the recruitment of intravenously administered cells to ischemic heart tissue, and on the preservation of heart function in a murine myocardial infarction model. We found that hypoxic preconditioning increased CXCR4 expression in CLK (cardiosphere-derived, Linc-kit progenitor) cells and markedly augmented CLK cell migration (in vitro) and recruitment (in vivo) to the ischemic myocardium. Four weeks after surgically induced myocardial infarction, infarct size and heart function were significantly better in mice administered hypoxia-preconditioned CLK cells than in mice treated with cells cultured under normoxic conditions. Furthermore, these effects were largely abolished by the addition of a CXCR4 inhibitor, indicating that the benefits of hypoxic preconditioning are mediated by the stromal cell-derived factor 1/CXCR4 axis, and that therapies targeting this axis may enhance cardiac-progenitor cell-based regenerative therapy.

Original languageEnglish (US)
Pages (from-to)1209-1216
Number of pages8
JournalCirculation research
Volume104
Issue number10
DOIs
StatePublished - May 22 2009

Fingerprint

CXCR4 Receptors
Cell- and Tissue-Based Therapy
Stem Cells
Myocardial Infarction
Therapeutics
Chemokine CXCL12
Tissue Preservation
CXC Chemokines
Cell Movement
Cultured Cells
Myocardium
Ischemia
Bone Marrow

Keywords

  • CXCR4
  • Cardiac progenitor cells
  • Cell migration
  • Hypoxia
  • Myocardial infarction

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine

Cite this

Hypoxic preconditioning enhances the benefit of cardiac progenitor cell therapy for treatment of myocardial infarction by inducing CXCR4 expression. / Tang, Yao Liang; Zhu, Wuqiang; Cheng, Min; Chen, Lijuan; Zhang, John; Sun, Tao; Kishore, Raj; Phillips, M. Ian; Losordo, Douglas W.; Qin, Gangjian.

In: Circulation research, Vol. 104, No. 10, 22.05.2009, p. 1209-1216.

Research output: Contribution to journalArticle

Tang, Yao Liang ; Zhu, Wuqiang ; Cheng, Min ; Chen, Lijuan ; Zhang, John ; Sun, Tao ; Kishore, Raj ; Phillips, M. Ian ; Losordo, Douglas W. ; Qin, Gangjian. / Hypoxic preconditioning enhances the benefit of cardiac progenitor cell therapy for treatment of myocardial infarction by inducing CXCR4 expression. In: Circulation research. 2009 ; Vol. 104, No. 10. pp. 1209-1216.
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