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Human Gene Therapy
Preferential Survival of CD4+ T Lymphocytes Engineered with Anti-Human Immunodeficiency Virus (HIV) Genes in HIV-Infected Individuals

To cite this article:
Richard A. Morgan, Robert Walker, Charles S. Carter, Ven Natarajan, Jorge A. Tavel, Chris Bechtel, Betsy Herpin, Linda Muul, Zhili Zheng, Shyla Jagannatha, Bruce A. Bunnell, Vicki Fellowes, Julia A. Metcalf, Randy Stevens, Michael Baseler, Susan F. Leitman, Elizabeth J. Read, R. Michael Blaese, H. Clifford Lane. Human Gene Therapy. September 2005, 16(9): 1065-1074. doi:10.1089/hum.2005.16.1065.

Published in Volume: 16 Issue 9: September 8, 2005

Full Text: • PDF for printing (342.5 KB) • PDF w/ links (393.7 KB)


Richard A. Morgan
National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892.
Robert Walker
National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.
Charles S. Carter
Clinical Center, National Institutes of Health, Bethesda, MD 20892.
Ven Natarajan
SAIC-Frederick, Cancer Research and Development Center, Frederick, MD 21702.
Dr. Jorge A. Tavel
National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.
Chris Bechtel
National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.
Betsy Herpin
National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.
Linda Muul
National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892.
Zhili Zheng
National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892.
Shyla Jagannatha
SAIC-Frederick, Cancer Research and Development Center, Frederick, MD 21702.
Bruce A. Bunnell
National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892.
Vicki Fellowes
Clinical Center, National Institutes of Health, Bethesda, MD 20892.
Julia A. Metcalf
Clinical Center, National Institutes of Health, Bethesda, MD 20892.
Randy Stevens
SAIC-Frederick, Cancer Research and Development Center, Frederick, MD 21702.
Michael Baseler
SAIC-Frederick, Cancer Research and Development Center, Frederick, MD 21702.
Susan F. Leitman
Clinical Center, National Institutes of Health, Bethesda, MD 20892.
Elizabeth J. Read
Clinical Center, National Institutes of Health, Bethesda, MD 20892.
R. Michael Blaese
National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892.
H. Clifford Lane
National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.

The present study examined the safety and relative in vivo survival of genetically engineered CD4+ T lymphocytes in human immunodeficiency virus (HIV)-infected individuals. Ten pairs of identical twins discordant for HIV infection were recruited, with the uninfected twin serving as the lymphocyte donor. Ten subjects were treated with a total of 19 separate infusions of retroviral vector-transduced CD4+ enriched T cells. Control (neo gene) or anti-HIV gene (antisense trans-activation response [TAR] element and/or trans-dominant Rev)-engineered lymphocytes were monitored in peripheral blood for 3 years, using a vector-specific PCR assay. Data from 9 of the 10 patients (15 of the 19 infusions) demonstrated preferential survival of CD4+ lymphocytes containing the anti-HIV gene(s) in the immediate weeks after infusion. In six of six patients studied long term (>100 weeks), only T cells containing the anti-HIV genes were consistently detected. In addition, a marked survival advantage of anti-HIV gene-containing T cells was observed in a patient treated during a period of high viral load. Thus, these data strongly support the hypothesis that anti-HIV genes afford a survival advantage to T cells and potential benefit to HIV-1+ individuals.

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