作者: A Sanchez-Aguilera , I Rattmann , D Z Drew , L U W Müller , V Summey
DOI: 10.1038/LEU.2009.217
关键词: Protein kinase B 、 Haematopoiesis 、 Cancer research 、 Thymocyte 、 breakpoint cluster region 、 ZAP70 、 Biology 、 CD5 、 Chronic lymphocytic leukemia 、 Leukopoiesis
摘要: RhoH is a hematopoietic-specific, GTPase-deficient member of the Rho GTPase family that functions as regulator thymocyte development and T-cell receptor signaling by facilitating localization zeta-chain-associated protein kinase 70 (ZAP70) to immunological synapse. Here we investigated function in B-cell lineage. (BCR) was intact Rhoh(-/-) mice. Because interacts with ZAP70, which prognostic factor chronic lymphocytic leukemia (CLL), analyzed mRNA levels primary human CLL cells showed 2.3-fold higher expression compared normal B cells. positively correlated ZAP70. Deletion Rhoh murine model (Emu-TCL1(Tg) mice) significantly delayed accumulation CD5(+)IgM(+) leukemic peripheral blood burden peritoneal cavity, bone marrow spleen mice their Rhoh(+/+) counterparts. Phosphorylation AKT ERK response BCR stimulation notably decreased Emu-TCL1(Tg);Rhoh(-/-) splenocytes. These data suggest has progression show altered samples.