The LMO2 T-cell oncogene is activated via chromosomal translocations or retroviral insertion during gene therapy but has no mandatory role in normal T-cell development.
The LMO2 gene encodes a LIM-only protein and is a target of chromosomal translocations in human T-cell leukemia. Recently, two X-SCID patients treated by gene therapy to rescue T-cell lymphopoiesis developed T-cell leukemias with retroviral insertion into the LMO2 gene causing clonal T-cell proliferation. In view of the specificity of LMO2 in T-cell tumorigenesis, we investigated a possible role for Lmo2 in T-lymphopoiesis, using conditional knockout of mouse Lmo2 with loxP-flanked Lmo2 and C...Expand abstract
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