Purpose： Stanniocalcin（STC） has been recognized as a potential biomarker in a variety of cancers. The aim of this study was to examine STC1 and STC2 expression in tumor and serum samples from gastric cancer（GC） p...Purpose： Stanniocalcin（STC） has been recognized as a potential biomarker in a variety of cancers. The aim of this study was to examine STC1 and STC2 expression in tumor and serum samples from gastric cancer（GC） patients.Methods： A total of 83 GC patients treated with radical resection were enrolled in this study. Immunohistochemistry was used to detect STC protein expression in paired tumor and adjacent normal tissues. Serum STC levels were determined by enzyme-linked immunosorbent assay（ELISA）. The receiver operating characteristics（ROC） curve was constructed to describe diagnostic specificity and sensitivity. Results： Both of STC1 and STC2 protein expression were upregulated in GC tissues compared with that in normal ones. Moreover, the high/moderate of STC1 protein was significantly associated with lymph metastasis, clinical stage and adverse 3-year progression-free survival（PFS）. In addition, serum STC1 and STC2 expression in GC patients were much higher than that in patients with benign gastric disease, which decreased at postoperative 7-10 days. The sensitivity of serum STC protein also showed superiority over CEA and CA19-9. Conclusions： STC upregulation plays an important role in GC development, and serum STC1 and STC2 might function as promising tumor markers for GC diagnosis and prognosis.展开更多
BACKGROUND Aberrant expression of stanniocalcin 2(STC2)is implicated in colon adenocarcinoma(COAD).A previous study identified that STC2 functions as a tumor promoter to drive development of some cancers,but the role ...BACKGROUND Aberrant expression of stanniocalcin 2(STC2)is implicated in colon adenocarcinoma(COAD).A previous study identified that STC2 functions as a tumor promoter to drive development of some cancers,but the role of its overexpression in the development of COAD remains unclear.AIM To evaluate the regulation mechanism of STC2 overexpression in COAD.METHODS The expression of STC2 in COAD was assessed by TCGA COAD database and GEO(GSE50760).Methylation level of the STC2 promoter was evaluated with beta value in UALCAN platform,and the correlation between STC2 expression and survival rate was investigated with TCGA COAD.Transcription binding site prediction was conducted by TRANSFAC and LASAGNA,and a luciferase reporter system was used to identify STC2 promoter activity in several cell lines,including HEK293T,NCM460,HT29,SW480,and HCT116.Western blotting was performed to evaluate the role of Sp1 on the expression of STC2.RESULTS The central finding of this work is that STC2 is overexpressed in COAD tissues and positively correlated with poor prognosis.Importantly,the binding site of the transcription factor Sp1 is widely located in the promoter region of STC2.A luciferase reporter system was successfully constructed to analyze the transcription activity of STC2,and knocking down the expression of Sp1 significantly inhibited the transcription activity of STC2.Furthermore,inhibition of Sp1 remarkably decreased protein levels of STC2.CONCLUSION Our data provide evidence that the transcription factor Sp1 is essential for the overexpression of STC2 in COAD through activation of promoter activity.Taken together,our finding provides new insights into the mechanism of oncogenic function of COAD by STC2.展开更多
This study aims to explore the expression of stanniocalcin 2(STC2)gene in breast cancer and its clinical significance.Female patients with breast cancer from Zhongnan Hospital of Wuhan University admitted during March...This study aims to explore the expression of stanniocalcin 2(STC2)gene in breast cancer and its clinical significance.Female patients with breast cancer from Zhongnan Hospital of Wuhan University admitted during March 2014 to October 2014 were enrolled in this study.All the tissues used in this experiment included 50 cases of breast cancer tissues and corresponding 50 cases of paracancer normal breast tissues with complete patients'information.The real-time quantitative polymerase chain reaction(qPCR)was applied to detect the expression of STC2 gene in 50 cases of breast cancer and paracancer normal breast tissues.The results showed that the expression level of STC2 gene in 50 cases of breast cancer tissues was significantly higher than that in paracancer normal breast tissues(P<0.001).The expression of STC2 gene was correlated with lymph node metastasis,distant metastasis,TNM stage and histological grade(P<0.001).The expression level of STC2 gene was significantly higher in breast cancer tissues with higher expression of Ki-67(P<0.001).The expression level of STC2 gene was significantly higher in estrogen receptor(ER)positive breast cancer tissues than in ER negative ones(P<0.001).However,different groups of age,pathological type,tumor size,PR expression and human epidermal growth factor receptor-2(HER2)expression did not show significant differences in STC2 expression(P>0.05).In conclusion,the abnormal overexpression of STC2 gene may play a role in the development and progression of breast cancer,and it can be used as an independent metastasis and prognostic factor of breast cancer.In addition,STC2 gene probably promotes the development and metastasis of breast cancer by interacting with estrogen and ER,and it may become a new direction for breast cancer endocrine therapy.展开更多
Objective： Stanniocalcin-1 （STC-1）, a kind of glycoprotein hormone, is universally up-regulated in various tumor tissues compared to corresponding normal tissues, suggesting it may be used as a tumor marker, whilst...Objective： Stanniocalcin-1 （STC-1）, a kind of glycoprotein hormone, is universally up-regulated in various tumor tissues compared to corresponding normal tissues, suggesting it may be used as a tumor marker, whilst disseminated tumor cells usually exist in peripheral blood. The aim of this study is to investigate the mRNA expression STC-1 in peripheral blood of colorectal cancer （CRC） and analyze its clinicopathological significance. Methods： The peripheral blood mononuclear cells （PBMNCs） were isolated from 78 CRC patients and 33 cancer-free controls. The expression status of STC-1 mRNA in PBMNCs was assessed by RT-PCR, its correlation with clinicopathological parameters and 5-year overall survival was analyzed as well. Results： In the 78 blood samples from CRC patients, 33 （42.31%） showed positive expression of STC-1 mRNA, and all of 15 gastrointestinal tumor tissues were positive for STC-1 mRNA. In contrast, all the blood samples from 14 healthy donors and 19 patients with inflammatory gastrointestinal disease were negative. Furthermore, STC-1 mRNA expression status was associated with patients’ advanced stage, distant metastasis and shortened overall survival. Conclusion： The detection of STC-1 mRNA in peripheral blood by RT-PCR was highly sensitive and specific for the patients with CRC. STC-1 mRNA may be a potential biomarker for detecting tumor micrometastasis and predicting prognosis.展开更多
基金supported by Natural Science Foundation of Jiangsu Province, China (No. BK2012371)
文摘Purpose： Stanniocalcin（STC） has been recognized as a potential biomarker in a variety of cancers. The aim of this study was to examine STC1 and STC2 expression in tumor and serum samples from gastric cancer（GC） patients.Methods： A total of 83 GC patients treated with radical resection were enrolled in this study. Immunohistochemistry was used to detect STC protein expression in paired tumor and adjacent normal tissues. Serum STC levels were determined by enzyme-linked immunosorbent assay（ELISA）. The receiver operating characteristics（ROC） curve was constructed to describe diagnostic specificity and sensitivity. Results： Both of STC1 and STC2 protein expression were upregulated in GC tissues compared with that in normal ones. Moreover, the high/moderate of STC1 protein was significantly associated with lymph metastasis, clinical stage and adverse 3-year progression-free survival（PFS）. In addition, serum STC1 and STC2 expression in GC patients were much higher than that in patients with benign gastric disease, which decreased at postoperative 7-10 days. The sensitivity of serum STC protein also showed superiority over CEA and CA19-9. Conclusions： STC upregulation plays an important role in GC development, and serum STC1 and STC2 might function as promising tumor markers for GC diagnosis and prognosis.
基金the Natural Science Foundation of Liaoning Province,China,No.20180550769
文摘BACKGROUND Aberrant expression of stanniocalcin 2(STC2)is implicated in colon adenocarcinoma(COAD).A previous study identified that STC2 functions as a tumor promoter to drive development of some cancers,but the role of its overexpression in the development of COAD remains unclear.AIM To evaluate the regulation mechanism of STC2 overexpression in COAD.METHODS The expression of STC2 in COAD was assessed by TCGA COAD database and GEO(GSE50760).Methylation level of the STC2 promoter was evaluated with beta value in UALCAN platform,and the correlation between STC2 expression and survival rate was investigated with TCGA COAD.Transcription binding site prediction was conducted by TRANSFAC and LASAGNA,and a luciferase reporter system was used to identify STC2 promoter activity in several cell lines,including HEK293T,NCM460,HT29,SW480,and HCT116.Western blotting was performed to evaluate the role of Sp1 on the expression of STC2.RESULTS The central finding of this work is that STC2 is overexpressed in COAD tissues and positively correlated with poor prognosis.Importantly,the binding site of the transcription factor Sp1 is widely located in the promoter region of STC2.A luciferase reporter system was successfully constructed to analyze the transcription activity of STC2,and knocking down the expression of Sp1 significantly inhibited the transcription activity of STC2.Furthermore,inhibition of Sp1 remarkably decreased protein levels of STC2.CONCLUSION Our data provide evidence that the transcription factor Sp1 is essential for the overexpression of STC2 in COAD through activation of promoter activity.Taken together,our finding provides new insights into the mechanism of oncogenic function of COAD by STC2.
基金grants from National Natural Science Foundation of China(No.81072152 and No.81770283)Natural Science Foundation of Hubei Province(No.2015CFA027)+3 种基金Research Foundation of Health and Family Planning Commission of Hubei Province(No.WJ2015MA010 and No.WJ2017M249)Clinical Medical Research Center of Peritoneal Cancer of Wuhan(No.2015060911020462)Subsidy Project of No.1 Hospital of Lanzhou University(No.Idyyyn2018-13)Research Foundation of Health and Family Planning Commission of Changzhou(No.QN201824).
文摘This study aims to explore the expression of stanniocalcin 2(STC2)gene in breast cancer and its clinical significance.Female patients with breast cancer from Zhongnan Hospital of Wuhan University admitted during March 2014 to October 2014 were enrolled in this study.All the tissues used in this experiment included 50 cases of breast cancer tissues and corresponding 50 cases of paracancer normal breast tissues with complete patients'information.The real-time quantitative polymerase chain reaction(qPCR)was applied to detect the expression of STC2 gene in 50 cases of breast cancer and paracancer normal breast tissues.The results showed that the expression level of STC2 gene in 50 cases of breast cancer tissues was significantly higher than that in paracancer normal breast tissues(P<0.001).The expression of STC2 gene was correlated with lymph node metastasis,distant metastasis,TNM stage and histological grade(P<0.001).The expression level of STC2 gene was significantly higher in breast cancer tissues with higher expression of Ki-67(P<0.001).The expression level of STC2 gene was significantly higher in estrogen receptor(ER)positive breast cancer tissues than in ER negative ones(P<0.001).However,different groups of age,pathological type,tumor size,PR expression and human epidermal growth factor receptor-2(HER2)expression did not show significant differences in STC2 expression(P>0.05).In conclusion,the abnormal overexpression of STC2 gene may play a role in the development and progression of breast cancer,and it can be used as an independent metastasis and prognostic factor of breast cancer.In addition,STC2 gene probably promotes the development and metastasis of breast cancer by interacting with estrogen and ER,and it may become a new direction for breast cancer endocrine therapy.
基金supported by the grants from the Department of Health, Jiangsu Province, China (No.H200116)
文摘Objective： Stanniocalcin-1 （STC-1）, a kind of glycoprotein hormone, is universally up-regulated in various tumor tissues compared to corresponding normal tissues, suggesting it may be used as a tumor marker, whilst disseminated tumor cells usually exist in peripheral blood. The aim of this study is to investigate the mRNA expression STC-1 in peripheral blood of colorectal cancer （CRC） and analyze its clinicopathological significance. Methods： The peripheral blood mononuclear cells （PBMNCs） were isolated from 78 CRC patients and 33 cancer-free controls. The expression status of STC-1 mRNA in PBMNCs was assessed by RT-PCR, its correlation with clinicopathological parameters and 5-year overall survival was analyzed as well. Results： In the 78 blood samples from CRC patients, 33 （42.31%） showed positive expression of STC-1 mRNA, and all of 15 gastrointestinal tumor tissues were positive for STC-1 mRNA. In contrast, all the blood samples from 14 healthy donors and 19 patients with inflammatory gastrointestinal disease were negative. Furthermore, STC-1 mRNA expression status was associated with patients’ advanced stage, distant metastasis and shortened overall survival. Conclusion： The detection of STC-1 mRNA in peripheral blood by RT-PCR was highly sensitive and specific for the patients with CRC. STC-1 mRNA may be a potential biomarker for detecting tumor micrometastasis and predicting prognosis.
