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Pickering JG, Takeshita S, Feldman L, et al. Vascular Applications of Human Gene Therapy. J Thromb Thrombolysis. 1995;1(3):299-302doi: 10.1007/BF01060740.
Pickering, J. G., Takeshita, S., Feldman, L., Losordo, D. W., & Isner, J. M. (1995). Vascular Applications of Human Gene Therapy. Journal of thrombosis and thrombolysis, 1(3), 299-302. https://doi.org/10.1007/BF01060740
Pickering, et al. "Vascular Applications of Human Gene Therapy." Journal of thrombosis and thrombolysis vol. 1,3 (1995): 299-302. doi: https://doi.org/10.1007/BF01060740
Pickering JG, Takeshita S, Feldman L, Losordo DW, Isner JM. Vascular Applications of Human Gene Therapy. J Thromb Thrombolysis. 1995;1(3):299-302. doi: 10.1007/BF01060740. PMID: 10608008.
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J Thromb Thrombolysis. 1995;1(3):299-302. doi: 10.1007/BF01060740.

Vascular Applications of Human Gene Therapy.

Journal of thrombosis and thrombolysis

Pickering, Takeshita, Feldman, Losordo, Isner

Affiliations

  1. Departments of Medicine (Cardiology) and Biomedical Research, St. Elizabeth's Hospital, Tufts University School of Medicine, Boston, Massachusetts.

PMID: 10608008 DOI: 10.1007/BF01060740

Abstract

Complexing recombinant DNA with cationic liposomes is a convenient means of introducing foreign genes into cells (lipofection) and could potentially form the basis for genetically modifying diseased blood vessels in patients. The mechanism of lipofection is incompletely understood, but it is recognized that the degree of successful gene transfer is highly dependent on cell type. We have transfected primary cultures of human vascular smooth muscle cells with a plasmid expressing either firefly luciferase (Luc) or nuclear-localized beta-galactosidase (NL-beta-gal). Cells were derived from either normal human internal mammary arteries, fragments of primary atherosclerotic plaque, or fragments of restenotic lesion. Concurrent lipofection of rabbit vascular smooth muscle cells and NIH 3T3 cells was performed as well. Compared with NIH 3T3 cells, expression in human vascular smooth muscle cells was markedly reduced: In cells derived from internal mammary artery, Luc expression, normalized for protein content, was 123-fold lower than in NIH 3T3 cells, while the proportion of cells expressing NL-beta-gal was 30-fold lower. Luc expression in cells derived from restenotic tissue was significantly greater than from cells derived from primary plaque. Within a given population of cells, the mitotic index of cells expressing the recombinant gene was significantly higher than the mitotic index for the total population of cells (p < 0.05). Finally, cotransfection experiments, in which lipofection of smooth muscle cells was performed using genes for NL-beta-gal and for human growth hormone, showed that among positive transfectants a high proportion of cells (23-36%) coexpressed both genes. Thus, the efficiency of successful lipofection in human vascular smooth muscle cells in vitro is low. Transfection appears to be preferentially facilitated in cells derived from restenotic tissue and specific properties of smooth muscle cells, including growth rates, appear to be critical for successful transfection. Further elucidation of cell properties that promote transfection is required to augment the efficiency of liposome-mediated gene transfer in human vascular cells.

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