| Title | Presence of S100A9-positive inflammatory cells in cancer tissues correlates with an early stage cancer and a better prognosis in patients with gastric cancer |
| Authors | Fan, Biao Zhang, Lian-Hai Jia, Yong-ning Zhong, Xi-Yao Liu, Yi-Qiang Cheng, Xiao-Jing Wang, Xiao-Hong Xing, Xiao-Fang Hu, Ying Li, Ying-Ai Du, Hong Zhao, Wei Niu, Zhao-Jian Lu, Ai-Ping Li, Ji-You Ji, Jia-Fu |
| Affiliation | Peking Univ, Canc Hosp & Inst, Dept Surg, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100871, Peoples R China. Peking Univ, Canc Hosp & Inst, Dept Pathol, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100871, Peoples R China. Peking Univ, Canc Hosp & Inst, Clin Gastr Canc Res Lab, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100871, Peoples R China. Peking Univ, Canc Hosp & Inst, Tissue Bank, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100871, Peoples R China. Peking Univ, Canc Hosp & Inst, Clin Res Lab, Key Lab Carcinogenesis & Translat Res,Minist Educ, Beijing 100871, Peoples R China. |
| Keywords | Gastric cancer S100A9 Inflammatory cells Tumor staging Survival INVASIVE DUCTAL CARCINOMA CALCIUM-BINDING PROTEINS S100 PROTEINS CALPROTECTIN S100A8/S100A9 COMPLEX-FORMATION BOWEL-DISEASE EXPRESSION MONOCYTES IMMUNITY MARKERS |
| Issue Date | 2012 |
| Publisher | bmc cancer |
| Citation | BMC CANCER.2012,12. |
| Abstract | Background: S100A9 was originally discovered as a factor secreted by inflammatory cells. Recently, S100A9 was found to be associated with several human malignancies. The purpose of this study is to investigate S100A9 expression in gastric cancer and explore its role in cancer progression. Methods: S100A9 expression in gastric tissue samples from 177 gastric cancer patients was assessed by immunohistochemistry. The expression of its dimerization partner S100A8 and the S100A8/A9 heterodimer were also assessed by the same method. The effect of exogenous S100A9 on motility of gastric cancer cells AGS and BGC-823 was then investigated. Results: S100A9 was specifically expressed by inflammatory cells such as macrophages and neutrophils in human gastric cancer and gastritis tissues. Statistical analysis showed that a high S100A9 cell count (>=200) per 200x magnification microscopic field in cancer tissues was predictive of early stage gastric cancer. High S100A9-positive cell count was negatively correlated with lymph node metastasis (P=0.009) and tumor invasion (P=0.011). S100A9 was identified as an independent prognostic predictor of overall survival of patients with gastric cancer (P=0.04). Patients with high S100A9 cell count were with favorable prognosis (P=0.021). Further investigation found that S100A8 distribution in human gastric cancer tissues was similar to S100A9. However, the number of S100A8-positive cells did not positively correlate with patient survival. The inflammatory cells infiltrating cancer were S100A8/A9 negative, while those in gastritis were positive. Furthermore, exogenous S100A9 protein inhibited migration and invasion of gastric cancer cells. Conclusions: Our results suggested S100A9-positive inflammatory cells in gastric cancer tissues are associated with early stage of gastric cancer and good prognosis. |
| URI | http://hdl.handle.net/20.500.11897/191492 |
| ISSN | 1471-2407 |
| DOI | 10.1186/1471-2407-12-316 |
| Indexed | SCI(E) PubMed |
| Appears in Collections: | 北京肿瘤医院 |
