首页> 外文期刊>Molecular and Cellular Biology >Thymic overexpression of Ttg-1 in transgenic mice results in T-cell acute lymphoblastic leukemia/lymphoma.
【24h】

Thymic overexpression of Ttg-1 in transgenic mice results in T-cell acute lymphoblastic leukemia/lymphoma.

机译:Ttg-1在转基因小鼠中的胸腺过表达导致T细胞急性淋巴细胞白血病/淋巴瘤。

获取原文
           

摘要

T-cell translocation gene 1 (Ttg-1), also called rhombotin, is deregulated upon translocation into the alpha/delta T-cell receptor loci in acute lymphoblastic leukemias bearing the t(11;14)(p15;q11). Ttg-1 encodes a nuclear protein, expressed predominantly in neuronal cells, which belongs to a novel family of transcription factors possessing LIM domains. We utilized the lck proximal promoter to overexpress this candidate oncogene in immature thymocytes of transgenic mice. lckPr Ttg-1 mice develop immature, aggressive T-cell leukemia/lymphomas. Tumor incidence is proportional to the level of Ttg-1 expression. Most tumors contain CD4+8+ cells as well as CD4-8+ cells, which have an immature rather than a mature peripheral phenotype. Ttg-1-induced tumorigenesis preferentially affects a minority population of thymocytes representing an immature CD4-8+ intermediate stage between double-negative CD4-8- cells and double-positive CD4+8+ cells. This model indicates that the aberrant expression of putative transcription factors plays a primary role in the genesis of T-cell acute lymphoblastic leukemias.
机译:T细胞易位基因1(Ttg-1),也称为rhombotin,在易位至携带t(11; 14)(p15; q11)的急性淋巴细胞白血病中转移到α/δT细胞受体基因座后会被解除调节。 Ttg-1编码一种核蛋白,主要在神经元细胞中表达,属于具有LIM结构域的新型转录因子家族。我们利用lck近端启动子在转基因小鼠的未成熟胸腺细胞中过表达该候选癌基因。 lckPr Ttg-1小鼠发展为未成熟的侵袭性T细胞白血病/淋巴瘤。肿瘤发生率与Ttg-1表达水平成正比。大多数肿瘤包含CD4 + 8 +细胞以及CD4-8 +细胞,它们具有不成熟的表型而不是成熟的外周表型。 Ttg-1诱导的肿瘤发生优先影响少数胸腺细胞,这些胸腺细胞代表CD4-8 +双阴性和CD4 + 8 +双阳性细胞之间未成熟的CD4-8 +中间阶段。该模型表明假定的转录因子的异常表达在T细胞急性淋巴细胞白血病的发生中起主要作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号