Abstract
Sam68 (Src associated in mitosis, 68kDa) belongs to the signal，transduction and activation of RNA (STAR) family and its function has been linked to the onset and progression of many tumors. However, the role of Sam68 in T-acute lymphoblastic leukemia (T-ALL) remains unclear. This present study aimed to investigate whether and how Sam68 involved in T-ALL. Our results showed high expression of Sam68 in adult T-ALL cases, Jurkat and CCRF-CEM cell lines. Knockdown of Sam68 repressed cell proliferation, increased apoptosis, induced S arrest along with upregulation of p21, Bad, cleaved caspase-9, caspase-3, PARP and downregulation of CDK2 and Bcl-xl. Furthermore, the data indicated that the expression change of Sam68 went with the changes of AKT/mTOR signaling pathway in T-ALL cell lines. Our findings demonstrated that Sam68 possibly participated in the progresses of T-ALL at least partially via AKT/mTOR signaling pathway.
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