title: Elevated expression of SHIP2 correlates with poor prognosis in non-small cell lung cancer.
abstract: SH2-containing inositol 5'-phosphatase 2 (SHIP2) is a vital regulator of phosphoinositide pools in metabolic pathways and is considered to downregulate phosphatidylinositol 3'-kinase signaling, which underlies the development of several kinds of human cancers. However, SHIP2 expression in non-small cell lung cancer (NSCLC) and its relationship with the clinical characteristics of NSCLC remain poorly understood. In this study, one-step quantitative reverse transcription-polymerase chain reaction and immunohistochemistry analysis with tissue microarray was used to evaluate SHIP2 expression in NSCLC and to investigate the relationship of this expression to NSCLC prognosis. Results showed that the expression of SHIP2 messenger RNA and protein was significantly higher in NSCLC than in corresponding non-cancerous tissues (both p < 0.05). SHIP2 protein expression in NSCLC was related to lymph node metastasis (p = 0.042), TNM stage (p = 0.036), and 5-year survival rate (p = 0.046). The Kaplan-Meier method and log-rank test suggested that high SHIP2 expression, tobacco consumption, and advanced tumor stage were significantly associated with low survival of NSCLC patients. The results of this research suggested that SHIP2 expression was correlated with malignant phenotypes of NSCLC and may thus serve as a poor prognostic factor and valuable oncogene for NSCLC.
authors.affiliation: Department of Infectious Diseases, The First People's Hospital of Kunshan Affiliated with Jiangsu University Suzhou 215000, China.
authors.forename: Maoying
authors.initials: M
authors.lastname: Fu
authors.forename: Weifei
authors.initials: W
authors.lastname: Fan
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Pu
authors.forename: Huihui
authors.initials: H
authors.lastname: Ni
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Feng
authors.initials: F
authors.lastname: Chang
authors.forename: Li
authors.initials: L
authors.lastname: Gong
authors.forename: Lin
authors.initials: L
authors.lastname: Xiong
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Gu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002289:Carcinoma, Non-Small-Cell Lung / Q000235:genetics / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics / Q000378:metabolism* / Q000401:mortality / Q000473:pathology; D008207:Lymphatic Metastasis / Q000235:genetics / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D000072183:Phosphatidylinositol-3,4,5-Trisphosphate 5-Phosphatases; D010744:Phosphoric Monoester Hydrolases / Q000235:genetics / Q000378:metabolism*; D011379:Prognosis; D015996:Survival Rate
chemical_list: D010744:Phosphoric Monoester Hydrolases; C098706:INPPL1 protein, human; D000072183:Phosphatidylinositol-3,4,5-Trisphosphate 5-Phosphatases
keywords: NSCLC; SHIP2; immunohistochemistry; prognosis; qPCR