PMID- 16160187 OWN - NLM STAT- MEDLINE DCOM- 20051021 LR - 20181113 IS - 0022-538X (Print) IS - 1098-5514 (Electronic) IS - 0022-538X (Linking) VI - 79 IP - 19 DP - 2005 Oct TI - Conversion of mouse mammary tumor virus to a lymphomagenic virus. PG - 12592-6 AB - Type B leukemogenic virus is a variant of mouse mammary tumor virus (MMTV) that causes thymic lymphomas rather than mammary tumors in mice. We demonstrate that conversion of a mammotropic MMTV to a T-cell-tropic virus requires two alterations in the long terminal repeat: (i) acquisition of a T-cell-specific enhancer and (ii) loss of transcriptional repression through deletion of negative regulatory elements (NREs) or by suppression of NRE activity after appropriate positioning of the enhancer. FAU - Bhadra, Sanchita AU - Bhadra S AD - Section of Molecular Genetics and Microbiology, The University of Texas at Austin, Austin, TX 78712-0162, USA. FAU - Lozano, Mary M AU - Lozano MM FAU - Dudley, Jaquelin P AU - Dudley JP LA - eng GR - P01 CA077760/CA/NCI NIH HHS/United States GR - P01 CA77760/CA/NCI NIH HHS/United States GR - R01 CA34780/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - J Virol JT - Journal of virology JID - 0113724 SB - IM MH - Animals MH - Cell Line MH - Enhancer Elements, Genetic MH - *Genes, Regulator MH - Humans MH - Jurkat Cells MH - Lymphoma, T-Cell/virology MH - Mammary Neoplasms, Experimental/virology MH - Mammary Tumor Virus, Mouse/*genetics/*pathogenicity MH - Mice MH - Mice, Inbred BALB C MH - Proviruses/genetics/pathogenicity MH - Retroviridae Infections/virology MH - T-Lymphocytes/virology MH - *Terminal Repeat Sequences MH - Transcription, Genetic MH - Transfection MH - Tumor Virus Infections/virology PMC - PMC1211542 EDAT- 2005/09/15 09:00 MHDA- 2005/10/22 09:00 PMCR- 2005/10/01 CRDT- 2005/09/15 09:00 PHST- 2005/09/15 09:00 [pubmed] PHST- 2005/10/22 09:00 [medline] PHST- 2005/09/15 09:00 [entrez] PHST- 2005/10/01 00:00 [pmc-release] AID - 79/19/12592 [pii] AID - 0885-05 [pii] AID - 10.1128/JVI.79.19.12592-12596.2005 [doi] PST - ppublish SO - J Virol. 2005 Oct;79(19):12592-6. doi: 10.1128/JVI.79.19.12592-12596.2005.