Abstract
Astrocyte elevated gene-1 (AEG-1) is involved in important biological processes including cell invasion, metastasis, and carcinogenesis. However, its clinical significance has remained largely unknown in hepatocellular carcinoma. Here, specimens from 144 patients with hepatocellular carcinomas in Beijing and Heilongjiang regions were investigated by immunohistochemical staining for AEG-1, vimentin, and E-cadherin expressions. A clinicopathological study revealed that AEG-1 expression level in tumor cells was significantly correlated with TNM stage (P = 0.001) and Edmonson grade (P < 0.0001). In addition, AEG-1, vimentin, and E-cadherin (epithelial–mesenchymal transition (EMT) biomarker) expressions were correlated with each other. These findings suggest that AEG-1 may be an epithelial–mesenchymal transition-associated biomarker in human hepatocellular carcinoma and play important roles in the progression of hepatocellular carcinoma. In addition, the AEG-1 gene is a potential target for elimination of hepatocellular carcinoma in the future.
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References
Siegel R, Naishadham D, Jemal A. Cancer statistics, 2012. CA Cancer J Clin. 2012;62:10–29.
Mittal S, El-Serag HB. Epidemiology of hepatocellular carcinoma: consider the population. J Clin Gastroenterol. 2013;47(Suppl):S2–6.
Padhya KT, Marrero JA, Singal AG. Recent advances in the treatment of hepatocellular carcinoma. Curr Opin Gastroenterol. 2013;29:285–92.
van Zijl F, Zulehner G, Petz M, Schneller D, Kornauth C, Hau M, et al. Epithelial–mesenchymal transition in hepatocellular carcinoma. Future Oncol. 2009;5:1169–79.
Lee TK, Poon RT, Yuen AP, et al. Twist overexpression correlates with hepatocellular carcinoma metastasis through induction of epithelial–mesenchymal transition. Clin Cancer Res. 2006;12:5369–76.
Su ZZ, Kang DC, Chen Y, et al. Identification and cloning of human astrocyte genes displaying elevated expression after infection with HIV-1 or exposure to HIV-1 envelope glycoprotein by rapid subtraction hybridization, RasH. Oncogene. 2002;21:3592–602.
Kang DC, Su ZZ, Sarkar D, et al. Cloning and characterization of HIV-1-inducible astrocyte elevated gene-1, AEG-1. Gene. 2005;353:8–15.
Brown DM, Ruoslahti E. Metadherin, a cell surface protein in breast tumors that mediates lung metastasis. Cancer Cell. 2004;5:365–74.
Meng X, Zhu D, Yang S, et al. Cytoplasmic metadherin (MTDH) provides survival advantage under conditions of stress by acting as RNA-binding protein. J Biol Chem. 2012;287:4485–91.
Thirkettle HJ, Mills IG, Whitaker HC, et al. Nuclear LYRIC/AEG-1 interacts with PLZF and relieves PLZF-mediated repression. Oncogene. 2009;28:3663–70.
Yoo BK, Emdad L, Sarkar D, et al. Astrocyte elevated gene-1 (AEG-1): a multifunctional regulator of normal and abnormal physiology. Pharmacol Ther. 2011;130:1–8.
Emdad L, Lee SG, Fisher PB, et al. Astrocyte elevated gene-1 (AEG-1) functions as an oncogene and regulates angiogenesis. Proc Natl Acad Sci U S A. 2009;106:21300–5.
Lee HJ, Jung DB, Kim SH, et al. Inhibition of hypoxia inducible factor alpha and astrocyte-elevated gene-1 mediates cryptotanshinone exerted antitumor activity in hypoxic PC-3 cells. Evid Based Complement Alternat Med. 2012;2012:1–13.
Noch E, Bookland M, Khalili K. Astrocyte-elevated gene-1 (AEG-1) induction by hypoxia and glucose deprivation in glioblastoma. Cancer Biol Ther. 2011;11:32–9.
Li C, Song H, Geng J, et al. Significance of AEG-1 expression in correlation with VEGF, microvessel density and clinicopathological characteristics in triple-negative breast cancer. J Surg Oncol. 2011;103:184–92.
Li C, Song H, Geng J, et al. AEG-1 overexpression: a novel indicator for peritoneal dissemination and lymph node metastasis in epithelial ovarian cancers. Int J Gynecol Cancer. 2011;21:602–8.
Li C, Song H, Geng J, et al. Elevated expression of AEG-1 is correlated with cisplatin-based chemoresistance and shortened outcome in patients with stages III–IV serous ovarian carcinoma. Histopathology. 2012;60:953–63.
Song H, Li C, Geng J, et al. Prognostic significance of expression in colorectal carcinoma. Int J Colorectal Dis. 2010;25:1201–9.
Erdem H, Yildirim U, Uzunlar AK, et al. Relationship among expression of basic-fibroblast growth factor, MTDH/astrocyte elevated gene-1, adenomatous polyposis coli, matrix metalloproteinase 9, and COX-2 markers with prognostic factors in prostate carcinomas. Niger J Clin Pract. 2013;16:418–23.
Huang W, Yang L, Liang S, et al. AEG-1 is a target of perifosine and is over-expressed in gastric dysplasia and cancers. Dig Dis Sci. 2013;58:2873–80.
Noch EK, Khalili K. The role of AEG-1/MTDH/LYRIC in the pathogenesis of central nervous system disease. Adv Cancer Res. 2013;120:159–92.
Srivastava J, Siddiq A, Emdad L, et al. Astrocyte elevated gene-1 promotes hepatocarcinogenesis: novel insights from a mouse model. Hepatology. 2012;56:1782–91.
Wan L, Kang Y. Pleiotropic roles of AEG-1/MTDH/LYRIC in breast cancer. Adv Cancer Res. 2013;120:113–34.
Emdad L, Das SK, Dasgupta S, et al. AEG-1/MTDH/LYRIC: signaling pathways, downstream genes, interacting proteins, and regulation of tumor angiogenesis. Adv Cancer Res. 2013;120:75–111.
Sarkar D. AEG-1/MTDH/LYRIC in liver cancer. Adv Cancer Res. 2013;120:193–221.
Liu K, Guo L, Miao L, et al. Ursolic acid inhibits epithelial–mesenchymal transition by suppressing the expression of astrocyte-elevated gene-1 in human nonsmall cell lung cancer A549 cells. Anticancer Drugs. 2013;24(5):494–503.
He XX, Chang Y, Meng FY, et al. MicroRNA-375 targets AEG-1 in hepatocellular carcinoma and suppresses liver cancer cell growth in vitro and in vivo. Oncogene. 2012;31:3357–69.
Zhu K, Dai Z, Pan Q, et al. Metadherin promotes hepatocellular carcinoma metastasis through induction of epithelial–mesenchymal transition. Clin Cancer Res. 2011;17:7294–302.
Li X, Kong X, Huo Q, et al. Metadherin enhances the invasiveness of breast cancer cells by inducing epithelial to mesenchymal transition. Cancer Sci. 2011;102:1151–7.
Wei J, Li Z, Chen W, et al. AEG-1 participates in TGF-beta1-induced EMT through p38 MAPK activation. Cell Biol Int. 2013;37:1016–21.
Kohles N, Nagel D, Jüngst D, Stieber P, Holdenrieder S. Predictive value of immunogenic cell death biomarkers HMGB1, sRAGE, and DNase in liver cancer patients receiving transarterial chemoembolization therapy. Tumour Biol. 2012;33:2401–9.
Yao N, Yao D, Wang L, et al. Inhibition of autocrine IGF-II on effect of human HepG2 cell proliferation and angiogenesis factor expression. Tumor Biol. 2012;33:1767–76.
Sun Y, Sun T, Li C, et al. A polysaccharide from the fungi of Huaier exhibits anti-tumor potential and immunomodulatory effects. Carbohydr Polym. 2013;92:577–82.
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This paper was supported by the Twelve-fifth Key Science and Technology Five Year Plan of China (no. 2012BAI15B08).
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Zheng, J., Li, C., Wu, X. et al. Astrocyte elevated gene-1 is a novel biomarker of epithelial–mesenchymal transition and progression of hepatocellular carcinoma in two China regions. Tumor Biol. 35, 2265–2269 (2014). https://doi.org/10.1007/s13277-013-1300-3
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DOI: https://doi.org/10.1007/s13277-013-1300-3