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Effects of PRPS1 I72 mutations on drug resistance in acute lymphoblastic leukemia and its mechanismsCUI Zhiyan; CHEN Yao; TAO Yue; SHEN Shuhong; LI Hui
Shanghai jiao tong da xue xue bao. Yi xue ban, 08/2023, Letnik: 43, Številka: 8Journal Article
Objective·To study whether mutations at the I72 site of phosphoribosyl pyrophosphate synthetase 1 (PRPS1) can induce resistance in acute lymphoblastic leukemia (ALL) cells to thiopurine chemotherapy drugs 6-mercaptopurine (6-MP) and 6-thioguanine (6-TG), and explain their mechanisms of action.Methods·The PRPS1 gene mutations (I72F, R177S and V316L) found in clinical practice and PRPS1 gene mutations (V208A and V289A) present in two ALL cell lines (KOPN72bi and RS4;11) were constructed into the vector pGV303 fused with green fluorescent protein (GFP), respectively. The PRPS1 A190T mutation that has been proven to be resistant to thiopurine chemotherapy drugs was used as the positive control, and the empty vector pGV303 (Vector), PRPS1 wild-type (WT) and PRPS1 I72V were used as the negative controls. The various mutants of PRPS1 were transiently transfected into HEK-293T cells (referred to as 293T cells), and the expression of these exogenous PRPS1 was detected by Western blotting. The half maximal inhibitory c
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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