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Serine/arginine rich splicing factor 2 expression and clinic pathological features indicating a prognostic factor in human hepatocellular carcinoma patients.
Cancer Biomarkers : Section A of Disease Markers 2018 Februrary 15
BACKGROUND: This research was aimed to study the expression of Serine/arginine rich splicing factor 2 (SRSF2) in tissues of hepatocellular carcinoma, and explore the relationship between the expression and the clinic pathological and prognosis of human hepatocellular carcinoma (HCC).
METHODS: One hundred and fifty-three pairs HCC tissues and adjacent normal tissue were collected from January 2010 to March 2013. The expression of SRSF2 gene was detected by immunohistochemistry, western blotting and real-time quantitative polymerase chain reaction (PCR), and the relationship between the expression and the clinic pathological and prognosis of HCC being analyzed.
RESULTS: In 153 cases of hepatocellular carcinoma, SRSF2 was highly expressed in 93 cases, low expression of 60 cases, immunohistochemistry score (6.50 ± 2.82), which was significantly higher than that in adjacent normal tissues (2.94 ± 1.23) (P< 0.05). The expression of SRSF2 in HCC was not associated with gender (χ2= 0.014, P= 0.906), age (χ2= 0.007, P= 0.931), tumor size (χ2= 3.566, P= 0.059) and T stage (χ2= 2.708, P= 0.100), and was significantly correlated with tumor differentiation (χ2= 9.687, P= 0.007), lymph node metastasis (χ2= 4.827, P= 0.028), distal metastasis (χ2= 9.235, P= 0.002), tumor, node, metastasis (TNM) stage (χ2= 3.978, P= 0.046), portal vein invasion and serum alpha-fetoprotein (χ2= 14.919, P= 0.000). The expression of SRSF2 protein in hepatocellular carcinoma was positively correlated (r = 0.704, P< 0.05) with serum alpha-fetoprotein through Pearson analysis. The survival rates of SRSF2 overexpressing hepatocellular carcinoma were 74.19%, 44.09%, 26.88%, 24.73% and 21.51% at 1 year, 2 years, 3 years, 4 years and 5 years respectively, which were lower than those of SRSF2 low expression group (93.33%, 71.67%, 56.67%, 51.67% and 50.00%).
CONCLUSION: SRSF2 is highly expressed in hepatocellular carcinoma and its expression increases with the degree of tumor differentiation and TNM staging. It is related to lymph node metastasis and metastasis of tumor cells, and is positively related to serum alpha fetoprotein content, and affects the postoperative survival time of HCC patients.
METHODS: One hundred and fifty-three pairs HCC tissues and adjacent normal tissue were collected from January 2010 to March 2013. The expression of SRSF2 gene was detected by immunohistochemistry, western blotting and real-time quantitative polymerase chain reaction (PCR), and the relationship between the expression and the clinic pathological and prognosis of HCC being analyzed.
RESULTS: In 153 cases of hepatocellular carcinoma, SRSF2 was highly expressed in 93 cases, low expression of 60 cases, immunohistochemistry score (6.50 ± 2.82), which was significantly higher than that in adjacent normal tissues (2.94 ± 1.23) (P< 0.05). The expression of SRSF2 in HCC was not associated with gender (χ2= 0.014, P= 0.906), age (χ2= 0.007, P= 0.931), tumor size (χ2= 3.566, P= 0.059) and T stage (χ2= 2.708, P= 0.100), and was significantly correlated with tumor differentiation (χ2= 9.687, P= 0.007), lymph node metastasis (χ2= 4.827, P= 0.028), distal metastasis (χ2= 9.235, P= 0.002), tumor, node, metastasis (TNM) stage (χ2= 3.978, P= 0.046), portal vein invasion and serum alpha-fetoprotein (χ2= 14.919, P= 0.000). The expression of SRSF2 protein in hepatocellular carcinoma was positively correlated (r = 0.704, P< 0.05) with serum alpha-fetoprotein through Pearson analysis. The survival rates of SRSF2 overexpressing hepatocellular carcinoma were 74.19%, 44.09%, 26.88%, 24.73% and 21.51% at 1 year, 2 years, 3 years, 4 years and 5 years respectively, which were lower than those of SRSF2 low expression group (93.33%, 71.67%, 56.67%, 51.67% and 50.00%).
CONCLUSION: SRSF2 is highly expressed in hepatocellular carcinoma and its expression increases with the degree of tumor differentiation and TNM staging. It is related to lymph node metastasis and metastasis of tumor cells, and is positively related to serum alpha fetoprotein content, and affects the postoperative survival time of HCC patients.
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