Prognostic significance of integrin-linked kinase1 overexpression in astrocytoma.
Integrin-linked kinase 1 (ILK1), a member of the serine/threonine kinases, has been demonstrated to be associated with numerous biological and pathological processes. However, the clinical and functional significance of ILK1 expression has not been characterized previously in human astrocytoma. In this study, we found that ILK1 was overexpressed, at both mRNA and protein levels, in astrocytoma cell lines as compared with normal human astrocytes. The ILK1 mRNA and protein were significantly increased up to 5.6-fold and 10.1-fold, respectively, in primary astrocytoma in comparison with the paired adjacent noncancerous brain tissues obtained from the same patient. Furthermore, immunohistochemical analysis revealed that ILK1 protein was positive in 208 of 228 (91.2%) paraffin-embedded archival astrocytoma specimens. Statistical analysis suggested that the upregulation of ILK1 was significantly correlated with the histological grading of astrocytoma (p = 0.000), and that patients with high ILK1 level exhibited shorter survival time (p < 0.001). Multivariate analysis revealed that ILK1 upregulation might be an independent prognostic indicator for the survival of patients with astrocytoma. Taken together, our results suggest that ILK1 might represent a novel and useful prognostic marker for astrocytoma and play a role during the development and progression of the disease.
Li
Jun
J
Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong 510080, China.
Zhang
Heng
H
Wu
Jueheng
J
Guan
Hongyu
H
Yuan
Jie
J
Huang
Zhengsong
Z
Li
Mengfeng
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001254:Astrocytoma / Q000201:enzymology / Q000235:genetics / Q000473:pathology*; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism; D015153:Blotting, Western; D001932:Brain Neoplasms / Q000201:enzymology / Q000235:genetics / Q000473:pathology*; D005260:Female; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D007150:Immunohistochemistry; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011379:Prognosis; D017346:Protein Serine-Threonine Kinases / Q000235:genetics* / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D015854:Up-Regulation; D000099200:Scaffold Protein ILK
D014408:Biomarkers, Tumor; D017346:Protein Serine-Threonine Kinases; D000099200:Scaffold Protein ILK