Deng YG, Huang WF, Lai J, Liu XP, Deng LY, Zhang XH. Expression of CHD1L in colorectal cancer and its effect on colorectal cancer cell proliferation.
Shijie Huaren Xiaohua Zazhi 2014;
22:5432-5440. [DOI:
10.11569/wcjd.v22.i35.5432]
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Abstract
AIM: To investigate the expression of chromodomain helicase/ATPase DNA binding protein 1-like (CHD1L) in colorectal cancer (CRC) tissues, and to assess the effect of CHD1L on CRC cell proliferation and apoptosis.
METHODS: Real-time fluorescence quantitative PCR (qRT-PCR) and immunohistochemistry were used to detect the expression of CHD1L mRNA and protein in CRC and pericarcinomatous intestine tissues (PCIT). MTT assay, colony formation assay and animal experiments were used to observe the effect of CHD1L on CRC cell proliferation. Flow cytometric assay was used to detect cell apoptosis.
RESULTS: CHD1L protein was overexpressed in 76.25% (61/80) of the CRC tissue samples. Transfection of CRC cells with an shRNA targeting CHD1L significantly reduced the expression of CHD1L mRNA and protein. MTT assay and colony formation assay showed that cell proliferation in the CHD1L knockdown group was significantly lower than that in the control group. Flow cytometry assay showed that apoptosis index in the CHD1L knockdown group was significantly increased compared with the control group. Tumor formation assay showed that tumor volume and weight in the CHD1L knockdown group were significantly less than those in the control group.
CONCLUSION: CHD1L is overexpressed in CRC tissues. Knockdown of CHD1L inhibits CRC cell proliferation and tumor growth. CHD1L may become a new target for the treatment of CRC.
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