Deoxyribozyme inhibits the proliferation of human umbilical artery smooth muscle cells |
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| Authors: | ZHOU Ming WANG Wei WANG Chong-quan DANG Shu-yi WANG Wei-min WANG Xiao-xun |
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| Institution: | 1.Department of Cardiology，2Institute of Life Sciences， Taihe Hospital, Yunyang Medical College, Shiyan 442000, China |
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| Abstract: | AIM: To observe the inhibition effects of 10-23 deoxyribozyme (DNAzyme) specific to human proliferating cell nuclear antigen (PCNA) gene on the proliferation of human umbilical artery smooth muscle cells (HUASMC) in vitro. METHODS: Using lipofectamine (Lip)-mediated method, the DNAzyme specific to PCNA was introduced into HUASMC. ［3H］-TdR incorporation was determined. The cell proliferation was examined by MTT assay and cell cycle was detected by flow cytometry. RESULTS: ［3H］-TdR incorporation in 1.0 μmol/L DNAzyme group was lower than that in control group (P<0.05) at 2 days after transfection. Compared with control group, the A value of MTT cholorimetric analysis decreased in 1.0 μmol/L DNAzyme group and antisense oligodeoxynucleotide (ASODN) group, at 2, 3 and 5 days after transfection significantly (P<0.01). The decrease in A value showed a dose-dependent manner within the experimental range at 5 days. After 2 days, the percentage of quiescence cells (G0/G1) was 73.8%, 54.7% and 41.1% in DNAzyme, ASODN and control groups, respectively. CONCLUSION: The DNAzyme specific to PCNA suppresses the proliferation of HUASMC effectively in vitro. |
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