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Journal of Virology, January 2009, p. 484-488, Vol. 83, No. 1
0022-538X/09/$08.00+0     doi:10.1128/JVI.01374-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

BALB/Mtv-Null Mice Responding to Strong Mouse Mammary Tumor Virus Superantigens Restrict Mammary Tumorigenesis{triangledown}

Sanchita Bhadra, Mary M. Lozano, and Jaquelin P. Dudley*

Section of Molecular Genetics and Microbiology and Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, Texas 78712

Received 1 July 2008/ Accepted 8 October 2008

The absence of endogenous mouse mammary tumor viruses (MMTVs) in the congenic mouse strain, BALB/Mtv-null, restricts the early steps of exogenous C3H MMTV infection, preventing the superantigen (Sag) response and mammary tumorigenesis. Here we demonstrate that BALB/Mtv-null mice also resist tumor induction by FM MMTV, which encodes a stronger Sag compared to C3H MMTV. In contrast to infections with C3H MMTV, Mtv-null mice show FM-MMTV Sag-specific responses comparable to those observed in susceptible BALB/c mice. Neither virus shows significant replication in the spleen or mammary gland. Thus, Mtv-null mice restrict MMTV replication and mammary tumorigenesis even after a robust Sag response.


* Corresponding author. Mailing address: Section of Molecular Genetics and Microbiology, The University of Texas at Austin, One University Station, A5000, 2506 Speedway, NMS 2.104, Austin, TX 78712-0162. Phone: (512) 471-8415. Fax: (512) 471-7088. E-mail: jdudley{at}uts.cc.utexas.edu

{triangledown} Published ahead of print on 15 October 2008.


Journal of Virology, January 2009, p. 484-488, Vol. 83, No. 1
0022-538X/09/$08.00+0     doi:10.1128/JVI.01374-08
Copyright © 2009, American Society for Microbiology. All Rights Reserved.




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