title: Overexpression of TIP30 inhibits the growth and invasion of glioma cells.
abstract: Glioma is an aggressive malignancy with limited effective treatment and poor prognosis. Therefore, the identification of novel prognostic markers and effective therapeutic targets is important for the treatment of human glioma. TIP30 is a tumor suppressor involved in the regulation of numerous cellular processes, including tumor cell growth, metastasis, and angiogenesis in various human cancers. The present study investigated whether Tat‑interacting protein (TIP)30 was able to regulate tumorigenesis and predict the clinical outcome of patients with glioma. A total of 92 human glioma tissue samples and 10 normal brain tissue samples were examined by immunostaining. The results indicated that the expression levels of TIP30 significantly decreased in glioma tissue samples. as compared with normal brain tissue samples. Furthermore, TIP30 expression was inversely correlated with tumor histological classification, pathological grade, tumor size, and epidermal growth factor receptor (EGFR) expression; however, no association was detected between TIP30 expression and patient age and gender. In addition, patients with positive TIP30 expression exhibited significantly longer median overall survival rates, as compared with those with negative TIP30 expression. In vitro experiments revealed that upregulation of TIP30 expression by lentiviral vector transfection inhibited cell growth and induced cell apoptosis, as determined by MTT assay and Annexin V‑fluorescein isothiocyanate staining, respectively. In addition, TIP30 expression markedly attenuated cell migration and invasion, as determined by wound healing and transwell assays. Upregulation of TIP30 expression in glioma cells decreased the expression levels of EGFR and its associated downstream molecules phosphorylated extracellular signal‑regulated kinases (ERK) and phosphorylated AKT, as determined by western blot analysis. The results of the present study indicated that TIP30 may suppress oncogenesis and glioma progression, thereby improving the prognosis of patients with glioma. Therefore, TIP30 may prove useful as a prognostic biomarker, and as a potential target for glioma therapy.
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Fengsheng
authors.initials: F
authors.lastname: Chen
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Feiye
authors.initials: F
authors.lastname: Liu
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Xinhui
authors.initials: X
authors.lastname: Liu
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Na
authors.initials: N
authors.lastname: Huang
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Cai
authors.affiliation: Cancer Center, 3rd People's Hospital, Dongguan, Guangdong 523326, P.R. China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Sun
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Aimin
authors.initials: A
authors.lastname: Li
authors.affiliation: Cancer Center, Traditional Chinese Medicine-Integrated Hospital, Southern Medical University, Guangzhou, Guangdong 510315, P.R. China.
authors.forename: Rongcheng
authors.initials: R
authors.lastname: Luo
mesh_terms: D000123:Acetyltransferases / Q000378:metabolism*; D000328:Adult; D001932:Brain Neoplasms / Q000378:metabolism* / Q000473:pathology*; D045744:Cell Line, Tumor; D002465:Cell Movement; D049109:Cell Proliferation; D015536:Down-Regulation; D066246:ErbB Receptors / Q000378:metabolism; D048049:Extracellular Signal-Regulated MAP Kinases / Q000378:metabolism; D005260:Female; D005910:Glioma / Q000378:metabolism* / Q000473:pathology*; D006801:Humans; D016086:Lentivirus / Q000378:metabolism; D008297:Male; D015999:Multivariate Analysis; D009361:Neoplasm Invasiveness; D010766:Phosphorylation; D016016:Proportional Hazards Models; D051057:Proto-Oncogene Proteins c-akt / Q000378:metabolism; D014157:Transcription Factors / Q000378:metabolism*
chemical_list: D014157:Transcription Factors; D000123:Acetyltransferases; C111246:HTATIP2 protein, human; D066246:ErbB Receptors; D051057:Proto-Oncogene Proteins c-akt; D048049:Extracellular Signal-Regulated MAP Kinases