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Expression and Clinical Significance of SIK1 and SIK2 in Thyroid Microcarcinoma and Adjacent Tissues |
HUANG Bo, ZHENG Jian-zhong, LIU Jin-huang, et al |
The Second Affiliated Hospital of Shenzhen University/People's Hospital of Shenzhen Baoan District,Shenzhen,Guangdong 518101 |
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Abstract 【Objective】To investigate the expression and clinical significance of SIK1 (salt-induced protein kinase 1) and SIK2 (salt-induced protein kinase 2) in thyroid microcarcinoma and adjacent tissues. 【Methods】 A total of 80 cases of pathology-confirmed thyroid microcarcinoma and matched paracancerous tissues from January 2014 to December 2016 were collected from the specimens bank of thyroid cancer in Shenzhen Baoan District People's Hospital. The expression levels of SIK1 and SIK2 in thyroid microcarcinoma and adjacent tissues were detected by immunohistochemistry and Q-PCR. The correlations of gene expression with patients' age, gender, tumor diameter, TNM stage and vascular invasion were analyzed.【Results】The results of immunohistochemistry showed that the expression levels of SIK1 and SIK2 in cancer tissues were higher than those in adjacent tissues (P<0.05). The results of PCR showed that the expression level of SIK1 in cancer tissue was significantly higher than that in adjacent tissues (P<0.05). However, there was no significant difference in the expression level of SIK2 between cancer tissues and adjacent tissues (P>0.05). Logistic regression analysis showed that the expression level of SIK1 in thyroid microcarcinoma tissue was positively correlated with tumor diameter, vascular invasion, lymphatic metastasis and distant metastasis (P<0.05). Logistic regression analysis also showed that the expression level of SIK2 was positively correlated with tumor size, lymphatic metastasis and whether distant metastasis (P<0.05). 【Conclusion】The expression levels of SIK1 and SIK2 in thyroid microcarcinoma tissues are significantly higher than those in tumor adjacent tissues. The levels of SIK1 and SIK2 expression are positively correlated with tumor diameter, lymphatic metastasis and distant metastasis, suggesting that SIK1 and SIK2 are related to the progression and prognosis. SIK1 and SIK2 can be used as new indicators of thyroid microcarcinoma diagnosis and treatment.
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Received: 04 March 2019
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