Clinical significance of STMN1 expression in cervical cancer and effect of inhibition of its expression on viability and apoptosis of cervical cancer Si-Ha cells
10.3969/j.issn.1000-4718.2018.06.026
- VernacularTitle:STMN1在宫颈癌中表达的临床意义及抑制其表达对宫颈鳞癌SiHa细胞活力和凋亡的影响
- Author:
Zhi-Hong CHAI
1
;
Ling-Xiao YING
;
Yi-Hong PAN
;
Xian-Li CAI
;
Wei-Min KONG
Author Information
1. 台州市立医院妇科
- Keywords:
Cervical cancer;
Stathmin 1;
Cell viability;
Apoptosis;
STAT3 signaling pathway
- From:
Chinese Journal of Pathophysiology
2018;34(6):1119-1123,1128
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To investigate the clinical significance of stathmin 1 (STMN1) expression in cervical cancer and the influence of its expression on the viability and apoptosis of cervical cancer cells. METHODS:Western blot was used to detect the protein expression of STMN1 in cervical cancer tissues, and the relationship between the expression and clinical characteristics of cervical cancer was analyzed. STMN1-siRNA was transfected into cervical squamous-cell carcino-ma SiHa cells. The protein levels of STMN1, STAT3, p-STAT3 and survivin were determined by Western blot after trans-fection for 48 h. The cell viability was measured by MTT assay. The apoptosis was analyzed by flow cytometry. DCFH-DA probe was used to detect the level of reactive oxygen species (ROS). RESULTS:The protein expression of STMN1 in cer-vical cancer tissues was significantly higher than that in paracancerous tissues (P<0.01). The STMN1 protein expression level was not correlated with age and histological types of cervical cancer patients, but was related to clinical stage, histo-logical differentiation and lymph node metastasis ( P<0.01). Transfection with STMN1-siRNA significantly reduced the expression of STMN1 in SiHa cells. Compared with control group, the cell viability in STMN1-siRNA group was significant-ly decreased, the apoptotic rate and ROS content were increased, and the protein levels of p-STAT3 and survivin were down-regulated (P<0.01). However, no significant difference of the STAT3 protein level was observed between STMN1- siRNA group and control group. CONCLUSION:STMN1 is highly expressed in cervical cancer, and its expression is re-lated to clinical stage, histological differentiation and lymph node metastasis. Inhibition of STMN1 expression reduces the viability and promotes apoptosis of cancer cells by down-regulating STAT3 signaling pathway.
