[Expression and clinical significance of GINS complex in colorectal cancer].

OBJECTIVE:To investigate the expression and clinical significance of GINS complex in colorectal cancer (CRC). METHODS:The expression level of GINS complex including PSF1, PSF2, PSF3 and SLD5 in CRC specimens (n=76) were detected by real-time fluorescent quantitative polymerase chain reaction. The association of GINS complex with clinicopathological parameters and prognosis of CRC patients were analyzed. RESULTS:The relative expression level of PSF1, PSF2, PSF3, and SLD5 mRNA in CRC tissues was 0.001 853±0.000 651, 0.007 757±0.004 260, 0.000 967±0.000 481 and 0.003 248±0.001 721, which was significantly higher than that in normal colorectal mucosa tissues (0.000 352±0.000 169, 0.002 951±0.001 216, 0.000 472±0.000 271, and 0.001 675±0.001 156) (all P<0.01). PSF1 mRNA expression was associated with tumor size (P<0.01), and PSF2 mRNA expression with age (P<0.05) and lymph node metastasis (P<0.05). No correlations between PSF3 mRNA expression and clinicopathological parameters were observed. SLD5 mRNA expression was associated with lymph node metastasis (P<0.01). Patients with high expression of PSF1, PSF2 and SLD5 had worse 5-year overall survival rate (57.1%, 54.3%, and 54.3%) than those with low expression (77.1%, 80.0%, and 80.0%) (all P<0.05). Multivariable Cox regression analysis indicated that PSF1 mRNA expression (P<0.05) was an independent factor associated with prognosis of colorectal cancer. CONCLUSIONS:Overexpression of GINS complex in CRC is associated with clinicopathological characteristics and prognosis of colorectal cancer. PSF1 expression is prognostic for CRC patients.

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