Significance and prognostic prediction value of expression of p-STAT1 and STAT protein in thyroid cancer
10.3760/cma.j.issn.1674-6090.2014.01.013
- VernacularTitle:甲状腺癌中p-STAT1和STAT1蛋白表达及意义
- Author:
Keyu YUAN
;
Zhuhua CHEN
;
Guangyu QIAN
- Publication Type:Journal Article
- Keywords:
Thyroid cancer;
p-STAT1;
STAT1;
Metastasis
- From:
Journal of Endocrine Surgery
2014;8(1):38-41
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the protein expression level of p-STAT1 and STAT1 in thyroid cancer and its correlation with clinical pathological parameters,especially with lymph node metastasis and relapse-free survival.Methods p-STAT1 and STAT1 protein were measured by immunohistochemical staining in 80 cases of primary thyroid carcinoma and matched normal controls.All samples were selected from the pathological storage in the Jiangdong 22nd Zone,of Zhuji People's Hospital.The correlation between p-STAT1,STAT1 and patients clinical pathological parameters was analyzed.74 out of 80 patients were followed up over 3 years to analyze the potential relationship between expression of p-STAT1 and STAT1 and relapse-free survival.Results The positive expression of p-STAT1 and STAT1 was 28.8％ and 90.0％ in thyroid cancer tissue versus 85.0％ and 50.0％ in normal thyroid tissue.The difference was statistically significant(P ＜ 0.05).The positve expression of p-STAT1 in stage Ⅲ and Ⅳ thyroid cancers was significantly lower than in stage Ⅰ and stage Ⅱ thyroid cancer(P ＜ 0.05).There was negative correlation between the expression of p-STAT1 and tumor stage and lymph node metastasis,while the expression of STAT1 was irrelevant.Furthermore,the relapse-free survival was 100％ in p-STAT1 positive patients,and 92.65％ in STAT1 positive group.Conclusion p-STAT1 protein level,negatively correlating with tumor stage and lymph node metastasis,down regulates in primary thyroid cancers,and may be a novel biomarker for thyroid cancer metatstasis.
