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. 1994 Nov;68(11):7634-6.
doi: 10.1128/JVI.68.11.7634-7636.1994.

Poor transduction efficiency of human hematopoietic progenitor cells by a high-titer amphotropic retrovirus producer cell clone

L C Xu  1 , H A Young, M Blanco, S Kessler, A B Roberts, S Karlsson
Affiliations

Poor transduction efficiency of human hematopoietic progenitor cells by a high-titer amphotropic retrovirus producer cell clone

L C Xu et al. J Virol. 1994 Nov.

Abstract

The transduction efficiency of human bone marrow CD34+ cells with supernatants from the retrovirus producer cell clone PA317/LGSN 16 was only one-fifth of that with supernatants from GP+ envAm12/LGSN 15, even though both producers had similar infection titers on 3T3 cells. PA317/LGSN 16-conditioned medium inhibited the proliferation of the bone marrow CD34+ cells, and this inhibitory effect was partially blocked by anti-transforming growth factor beta antibodies. These studies suggest that cytokine secretion plays a role in the suppression of retrovirus transduction of human CD34+ cells.

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