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Journal of Virology, July 2007, p. 7274-7279, Vol. 81, No. 13
0022-538X/07/$08.00+0     doi:10.1128/JVI.00250-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Diminished Potential for B-Lymphoid Differentiation after Murine Leukemia Virus Infection In Vivo and in EML Hematopoietic Progenitor Cells{triangledown}

Samantha L. Finstad,1 Naomi Rosenberg,2 and Laura S. Levy1*

Department of Microbiology and Immunology and Tulane Cancer Center, Tulane University Health Sciences Center, New Orleans, Louisiana,1 Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts2

Received 5 February 2007/ Accepted 5 April 2007

Infection with a recombinant murine-feline gammaretrovirus, MoFe2, or with the parent virus, Moloney murine leukemia virus, caused significant reduction in B-lymphoid differentiation of bone marrow at 2 to 8 weeks postinfection. The suppression was selective, in that myeloid potential was significantly increased by infection. Analysis of cell surface markers and immunoglobulin H gene rearrangements in an in vitro model demonstrated normal B-lymphoid differentiation after infection but significantly reduced viability of differentiating cells. This reduction in viability may confer a selective advantage on undifferentiated lymphoid progenitors in the bone marrow of gammaretrovirus-infected animals and thereby contribute to the establishment of a premalignant state.

* Corresponding author. Mailing address: Department of Microbiology and Immunology, Tulane University School of Medicine, 1430 Tulane Avenue SL-38, New Orleans, LA 70112. Phone: (504) 988-3291. Fax: (504) 988-2951. E-mail: llevy{at}tulane.edu

{triangledown} Published ahead of print on 11 April 2007.

Journal of Virology, July 2007, p. 7274-7279, Vol. 81, No. 13
0022-538X/07/$08.00+0     doi:10.1128/JVI.00250-07
Copyright © 2007, American Society for Microbiology. All Rights Reserved.



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