First Author | Tsuruyama T | Year | 2002 |
Journal | Proc Natl Acad Sci U S A | Volume | 99 |
Issue | 12 | Pages | 8253-8 |
PubMed ID | 12048235 | Mgi Jnum | J:77108 |
Mgi Id | MGI:2181007 | Doi | 10.1073/pnas.112202899 |
Citation | Tsuruyama T, et al. (2002) Constitutive activation of Stat5a by retrovirus integration in early pre-B lymphomas of SL/Kh strain mice. Proc Natl Acad Sci U S A 99(12):8253-8 |
abstractText | We found that the second intron of Stat5a was one of the common integration sites of the endogenous ecotropic murine leukemia virus, i.e., SL/Kh virus integration-1 (Svi1), in early pre-B lymphomas in SL/Kh mice. The high expression of STAT5A induced by Svi1 integration and activation accelerated the transcription of its target genes such as c-Myc. Transfection of the constitutively active Stat5a mutant cDNA, but not of the wild-type cDNA, to the bone marrow cells induced colony formation of pre-B cells in a methylcellulose medium and escaped from dependence on IL-7. Such growth depended on a genetic factor in the SL/Kh strain. Consitutively high expression of Stat5a either by retrovirus integration or transfection of active mutant cDNA can be lymphomagenic to early pre-B cells in collaboration with a certain genetic background factor of mice. |