[Effects of simvastatin on proliferation and apoptosis of acute monocytic leukemia cell line SHI-1]. 2011

Yan-Fen Li, and Ri Zhang, and Xu-Hui Zhang, and Guang-Hua Chen, and Jian-Nong Cen, and Zi-Ling Zhu
Key Laboratory of Thrombosis and Hemostasis Subordinated to Ministry of Health, Jiangsu lnsititute of Hematology, Suzhou University First Affiliated Hospital, Suzhou 215006, Jiangsu Province, China.

The purpose of this study was to investigate the effect of simvastatin (SIM) on proliferation and apoptosis of acute monocytic leukemia cell line SHI-1 and its mechanism. Experiments were divided into control and test groups (5 µmol/L, 10 µmol/L, 20 µmol/L SIM groups). The growth inhibitory rate of SHI-1 cells was detected using methyl thiazolyl tetrazolium (MTT) method. The cell cycle distribution and apoptotic rate were measured by using flow cytometry. The expression of BCL-2, caspase-3 mRNA were determined by reverse transcription polymerase chain reaction (RT-PCR). The expression of BCL-2, caspase-3 protein levels were analyzed by Western blot. The results demonstrated that SIM inhibited the growth of SHI-1 cells in time- and does-dependent manners. Cell cycle analysis showed that SHI-1 cells significantly arrested in S phase (p < 0.05) after treating with SIM for 48 hours, as compared with control group. 5 µmol/L SIM in test group significantly blocked cell cycle progression, but can not induce apoptosis. The expressions of BCL-2 mRNA and protein were down-regulated and caspase-3 mRNA and protein were up-regulated along with the increase of SIM concentration (p < 0.05). It is concluded that SIM is able to inhibit proliferation and induce apoptosis of SHI-1 cells, the mechanism may be associated with downregulating the expression of apoptosis-related gene BCL-2, upregulating the expression of caspase-3.

UI MeSH Term Description Entries
D007948 Leukemia, Monocytic, Acute An acute myeloid leukemia in which 80% or more of the leukemic cells are of monocytic lineage including monoblasts, promonocytes, and MONOCYTES. Leukemia, Monoblastic, Acute,Leukemia, Myeloid, Acute, M5,Leukemia, Myeloid, Schilling-Type,Monoblastic Leukemia, Acute,Monocytic Leukemia, Acute,Myeloid Leukemia, Acute, M5,Myeloid Leukemia, Schilling-Type,Leukemia, Acute Monocytic,Leukemia, Myeloid, Schilling Type,Acute Monoblastic Leukemia,Acute Monoblastic Leukemias,Acute Monocytic Leukemia,Acute Monocytic Leukemias,Leukemia, Schilling-Type Myeloid,Leukemias, Acute Monoblastic,Leukemias, Acute Monocytic,Monoblastic Leukemias, Acute,Monocytic Leukemias, Acute,Myeloid Leukemia, Schilling Type,Schilling-Type Myeloid Leukemia
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015973 Gene Expression Regulation, Leukemic Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control of gene action in leukemia. Leukemic Gene Expression Regulation,Regulation of Gene Expression, Leukemic,Regulation, Gene Expression, Leukemic
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D045744 Cell Line, Tumor A cell line derived from cultured tumor cells. Tumor Cell Line,Cell Lines, Tumor,Line, Tumor Cell,Lines, Tumor Cell,Tumor Cell Lines
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D053148 Caspase 3 A short pro-domain caspase that plays an effector role in APOPTOSIS. It is activated by INITIATOR CASPASES such as CASPASE 9. Isoforms of this protein exist due to multiple alternative splicing of its MESSENGER RNA. CASP3,Apopain,Caspase-3,Pro-Caspase-3,Procaspase-3,Pro Caspase 3,Procaspase 3
D019253 Proto-Oncogene Proteins c-bcl-2 Membrane proteins encoded by the BCL-2 GENES and serving as potent inhibitors of cell death by APOPTOSIS. The proteins are found on mitochondrial, microsomal, and NUCLEAR MEMBRANE sites within many cell types. Overexpression of bcl-2 proteins, due to a translocation of the gene, is associated with follicular lymphoma. bcl-2 Proto-Oncogene Proteins,c-bcl-2 Proteins,B-Cell Leukemia 2 Family Proteins,BCL2 Family Proteins,BCL2 Proteins,B Cell Leukemia 2 Family Proteins,Family Proteins, BCL2,Proteins, BCL2,Proteins, BCL2 Family,Proto Oncogene Proteins c bcl 2,Proto-Oncogene Proteins, bcl-2,bcl 2 Proto Oncogene Proteins,c bcl 2 Proteins,c-bcl-2, Proto-Oncogene Proteins
D019821 Simvastatin A derivative of LOVASTATIN and potent competitive inhibitor of 3-hydroxy-3-methylglutaryl coenzyme A reductase (HYDROXYMETHYLGLUTARYL COA REDUCTASES), which is the rate-limiting enzyme in cholesterol biosynthesis. It may also interfere with steroid hormone production. Due to the induction of hepatic LDL RECEPTORS, it increases breakdown of LDL CHOLESTEROL. MK-733,Synvinolin,Zocor,MK 733,MK733

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