Regeneration of the infarcted heart with stem cells derived by nuclear transplantation

R Lanza, M A S Moore, T Wakayama, Anthony C F Perry, J H Shieh, J Hendrikx, A Leri, S Chimenti, A Monsen, D Nurzynska, M D West, J Kajstura, P Anversa

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Abstract

Nuclear transfer techniques have been proposed as a strategy for generating an unlimited supply of rejuvenated and histocompatible stem cells for the treatment of cardiac diseases. For this purpose, c-kit -positive fetal liver stem cells obtained from cloned embryos were injected in the border zone of infarcted mice to induce tissue reconstitution. Cloned embryos were derived from somatic cell fusion between nuclei of cultured LacZ-positive fibroblasts and enucleated oocytes of a different mouse strain. We report that regenerating myocardium replaced 38% of the scar at 1 month. The rebuilt tissue expressed LacZ and was composed of myocytes and vessels connected with the coronary circulation. Myocytes were functionally competent and expressed contractile proteins, desmin, connexin43, and N-cadherin. These structural characteristics indicated that the new myocytes were electrically and mechanically coupled. Similarly, the formed coronary arterioles and capillary structures contained blood and contributed, therefore, to tissue oxygenation. Cardiac replacement resulted in an improvement of ventricular hemodynamics and in a reduction of diastolic wall stress. These beneficial effects were obtained by stem cell transdifferentiation and commitment to the cardiac cell lineages. Myocardial growth was independent from fusion of the injected stem cells with preexisting partner cells. In conclusion, c-kit -positive stem cells derived by nuclear transfer cloning restore infarcted myocardium. Although problems currently plague nuclear transplantation, including the potential for epigenetic and imprinting abnormalities, stem cells derived from cloned embryos are sufficiently normal to repair damaged tissue in vivo. Importantly, the magnitude of myocardial regeneration obtained in this study is significantly superior to that achieved with adult bone marrow cells.
LanguageEnglish
Pages820-827
Number of pages8
JournalCirculation Research
Volume94
Issue number6
DOIs
StatusPublished - 2004

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Nuclear Transfer Techniques
Regeneration
Stem Cells
Muscle Cells
Embryonic Structures
Myocardium
Fetal Stem Cells
Cell Transdifferentiation
Contractile Proteins
Coronary Circulation
Connexin 43
Desmin
Plague
Cell Fusion
Arterioles
Cell Lineage
Cadherins
Epigenomics
Bone Marrow Cells
Oocytes

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Regeneration of the infarcted heart with stem cells derived by nuclear transplantation. / Lanza, R; Moore, M A S; Wakayama, T; Perry, Anthony C F; Shieh, J H; Hendrikx, J; Leri, A; Chimenti, S; Monsen, A; Nurzynska, D; West, M D; Kajstura, J; Anversa, P.

In: Circulation Research, Vol. 94, No. 6, 2004, p. 820-827.

Research output: Contribution to journalArticle

Lanza, R, Moore, MAS, Wakayama, T, Perry, ACF, Shieh, JH, Hendrikx, J, Leri, A, Chimenti, S, Monsen, A, Nurzynska, D, West, MD, Kajstura, J & Anversa, P 2004, 'Regeneration of the infarcted heart with stem cells derived by nuclear transplantation', Circulation Research, vol. 94, no. 6, pp. 820-827. https://doi.org/10.1161/01.res.0000120863.53562.df
Lanza, R ; Moore, M A S ; Wakayama, T ; Perry, Anthony C F ; Shieh, J H ; Hendrikx, J ; Leri, A ; Chimenti, S ; Monsen, A ; Nurzynska, D ; West, M D ; Kajstura, J ; Anversa, P. / Regeneration of the infarcted heart with stem cells derived by nuclear transplantation. In: Circulation Research. 2004 ; Vol. 94, No. 6. pp. 820-827.
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