Transduction of pluripotent human hematopoietic stem cells demonstrated by clonal analysis after engraftment in immune-deficient mice

Jan Nolta, M. A. Dao, S. Wells, E. M. Smogorzewska, D. B. Kohn

Research output: Contribution to journalArticle

168 Scopus citations

Abstract

Gene transduction of pluripotent human hematopoietic stem cells (HSCs) is necessary for successful gene therapy of genetic disorders involving hematolymphoid cells. Evidence for transduction of pluripotent HSCs can be deduced from the demonstration of a retroviral vector integrated into the same cellular chromosomal DNA site in myeloid and lymphoid cells descended from a common HSC precursor. CD34+ progenitors from human bone marrow and mobilized peripheral blond were transduced by retroviral vectors and used for long-term engraftment in immune-deficient (beige/nude/XID) mice. Human lymphoid and myeloid populations were recovered from the marrow of the mice after 7-11 months, and individual human granulocyte-macrophage and T-cell clones were isolated and expanded ex vivo. Inverse PCR from the retroviral long terminal repeat into the flanking genomic DNA was performed on each sorted cell population. The recovered cellular DNA segments that flanked proviral integrants were sequenced to confirm identity. Three mice were found (of 24 informative mice) to contain human lymphoid and myeloid populations with identical proviral integration sites, confirming that pluripotent human HSCs had been transduced.

Original languageEnglish (US)
Pages (from-to)2414-2419
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume93
Issue number6
DOIs
StatePublished - Mar 19 1996
Externally publishedYes

Keywords

  • gene therapy
  • retroviral vectors

ASJC Scopus subject areas

  • Genetics
  • General

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