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  • Title: [The effects of 1,2-dichloroethane on the cellular proliferation, cellular cycle and apoptosis of SW620 cells in vitro].
    Author: Li C, Zhang WM, Luo MJ, Yang J, Wang J.
    Journal: Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi; 2012 Mar; 30(3):213-6. PubMed ID: 22804893.
    Abstract:
    OBJECTIVE: To explore the effects of 1,2-dichloroethane (1,2-DCE) on the cellular proliferation, cellular cycle and apoptosis of SW620 cells in vitro. METHODS: SW620 cells were exposed to 1,2-DCE at different concentrations for 0.5 and 1 h. MTT assay was used to detect the relative number and relative viability, the low cytometry (FCM) assay was utilized to measure the cell cycle and apoptosis. RESULTS: The results of MTT assay showed that the cellular relative viability decreased with the 1,2-DCE's dose and exposure time. Compared with the DMSO group, the relative cellular viability of cells exposed to 1,2-DCE at the doses of 75, 100, 125, 150, 175, 200 µmol/L for 1 h decreased (P<0.05 or P<0.01). Compared with the groups exposed to 1,2-DCE for 0.5 h, the relative cellular viability of cells exposed to 175 µmol/L 1,2-DCE for 1 h decreased significantly (P<0.01). IC(50) of cellular proliferation in cells exposed to 1,2-DCE for 0.5 h was 89.41 µmol/L, and 95% confidence interval was 85.23 to 93.79 µmol/L. IC(50) of cellular proliferation in cells exposed to 1,2-DCE for 1 h was 87.68 µmol/L, and 95% confidence interval was 83.71 to 91.82 µmol/L. The results of FCM indicated that compared with the control group, the G(0)/G(1) phase in groups exposed to 1,2-DCE at the doses of 25, 50, 100, 150 and 200 µmol/L for 1 h decreased significantly (P<0.05 or P<0.01), the S phase in groups exposed to 1,2-DCE at the doses of 25, 50 and 100 µmol/L for 1 h reduced significantly (P<0.05 or P < 0.01), the G(2)/M phase in groups exposed to 1,2-DCE at the doses of 25, 50, 100, 150 and 200 µmol/L for 1 h increased significantly (P<0.05 or P<0.01). However, 1,2-DCE could not induce apoptosis of SW620 cells. CONCLUSION: 1,2-DCE could inhibit the proliferation of SW620 cells, and arrest SW620 cells at G(2)/M phase, but could not induce the apoptosis of SW620 cells in vitro.
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