Peifeng Chen1, Qiaolian Li1, Yi Zhou1, Hong Lu1, Hejian Chen1, Minjia Qian2, Jinyin Chen3. 1. Department of Respiratory and Critical Care Medicine, Zhuji Affiliated Hospital of Shaoxing University, NO. 9 Jianmin Road, Taozhu Streets, Zhuji, Zhejiang, China. 2. Department of Respiratory and Critical Care Medicine, Zhuji Affiliated Hospital of Shaoxing University, NO. 9 Jianmin Road, Taozhu Streets, Zhuji, Zhejiang, China. cindyqmj@163.com. 3. Department of Respiratory and Critical Care Medicine, Zhuji Affiliated Hospital of Shaoxing University, NO. 9 Jianmin Road, Taozhu Streets, Zhuji, Zhejiang, China. hxnk@163.com.
Abstract
BACKGROUND: Aquaporin 9 (AQP9) is recognized as a key regulator in several cancers, whereas little is known about its clinical implication in non-small cell lung cancer (NSCLC). Thus, we aimed to explore AQP9 expression and its relationship with clinical features, prognosis in NSCLC patients. METHODS: One hundred ninety-eight NSCLC patients who received resection were retrospectively enrolled. This study contained two cohorts: in cohort A, AQP9 protein expression (from formalin fixed paraffin embedded tumor and paired adjacent tissue specimens) in 198 patients was detected by immunohistochemistry (IHC). In cohort B, AQP9 mRNA expression (from fresh-frozen tumor and paired adjacent tissues) in 108 patients (out of 198 patients) was detected by RT-qPCR. RESULTS: In cohort A, increased AQP9 IHC score and greater proportion of AQP9 protein high expression cases were shown in tumor tissue than adjacent tissue (both P < 0.001). Tumor AQP9 protein high expression correlated with lymph node (LYN) metastasis (P = 0.002) and raised TNM stage (P = 0.012). Interestingly, tumor AQP9 protein high expression related to worse disease-free survival (DFS) (P = 0.002) and overall survival (OS) (P = 0.026). In cohort B, AQP9 mRNA expression in tumor tissue was increased than adjacent tissue (P < 0.001), and tumor AQP9 mRNA high expression linked to LYN metastasis (P = 0.024) and increased TNM stage (P = 0.032) as well; tumor AQP9 mRNA high expression was related to shorter DFS (P = 0.009), and it presented with a trend to be correlated with worse OS (P = 0.054), but without statistical significance. CONCLUSION: AQP9 serves as a potential indicator for monitoring disease progression and prognostication in NSCLC patients.
BACKGROUND: Aquaporin 9 (AQP9) is recognized as a key regulator in several cancers, whereas little is known about its clinical implication in non-small cell lung cancer (NSCLC). Thus, we aimed to explore AQP9 expression and its relationship with clinical features, prognosis in NSCLC patients. METHODS: One hundred ninety-eight NSCLC patients who received resection were retrospectively enrolled. This study contained two cohorts: in cohort A, AQP9 protein expression (from formalin fixed paraffin embedded tumor and paired adjacent tissue specimens) in 198 patients was detected by immunohistochemistry (IHC). In cohort B, AQP9 mRNA expression (from fresh-frozen tumor and paired adjacent tissues) in 108 patients (out of 198 patients) was detected by RT-qPCR. RESULTS: In cohort A, increased AQP9 IHC score and greater proportion of AQP9 protein high expression cases were shown in tumor tissue than adjacent tissue (both P < 0.001). Tumor AQP9 protein high expression correlated with lymph node (LYN) metastasis (P = 0.002) and raised TNM stage (P = 0.012). Interestingly, tumor AQP9 protein high expression related to worse disease-free survival (DFS) (P = 0.002) and overall survival (OS) (P = 0.026). In cohort B, AQP9 mRNA expression in tumor tissue was increased than adjacent tissue (P < 0.001), and tumor AQP9 mRNA high expression linked to LYN metastasis (P = 0.024) and increased TNM stage (P = 0.032) as well; tumor AQP9 mRNA high expression was related to shorter DFS (P = 0.009), and it presented with a trend to be correlated with worse OS (P = 0.054), but without statistical significance. CONCLUSION: AQP9 serves as a potential indicator for monitoring disease progression and prognostication in NSCLC patients.
Authors: Peter Goldstraw; David Ball; James R Jett; Thierry Le Chevalier; Eric Lim; Andrew G Nicholson; Frances A Shepherd Journal: Lancet Date: 2011-05-10 Impact factor: 79.321
Authors: Wen-Guang Zhang; Chuan-Fei Li; Min Liu; Xiao-Feng Chen; Kai Shuai; Xin Kong; Lin Lv; Zhe-Chuan Mei Journal: Cancer Lett Date: 2016-05-20 Impact factor: 8.679