Overexpression of High-Mobility Group Box 2 Is Associated with Tumor Aggressiveness and Prognosis of Hepatocellular Carcinoma

被引：77

作者：

Kwon, Jung-Hee ^{[1
]}

Kim, Jongmin ^{[2
]}

Park, Jin Young ^{[2
]}

Hong, Sun Mi ^{[1
]}

Park, Chang Wook ^{[1
]}

Hong, Seok Joo ^{[2
]}

Park, Sun Young ^{[2
]}

Choi, Yoon Jung ^{[3
]}

Do, In-Gu ^{[4
]}

Joh, Jae-Won ^{[5
]}

Kim, Dae Shick ^{[4
]}

Choi, Kwan Yong ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Dept Life Sci, Pohang 790784, South Korea

[2] CbsBioscience Inc, Taejon, South Korea

[3] Natl Hlth Insurance Corp Ilsan Hosp, Dept Pathol, Goyang, Gyeonggi, South Korea

[4] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Dept Pathol, Seoul 135710, South Korea

[5] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Dept Surg, Seoul 135710, South Korea

来源：

CLINICAL CANCER RESEARCH | 2010年 / 16卷 / 22期

关键词：

CELL-CYCLE; PROTEIN; DNA; CISPLATIN; CANCER; BINDING; HMGB2; GENE; MAINTENANCE; SENSITIVITY;

D O I：

10.1158/1078-0432.CCR-10-0825

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Purpose: We investigated the expression of high-mobility group box 2 (HMGB2) in patients with hepatocellular carcinoma (HCC) and its clinical effects with underlying mechanisms. Experimental Design: HMGB2 mRNA levels were measured in 334 HCC patients by real-time reverse transcription-PCR and HMGB2 protein levels in 173 HCC patients by immunohistochemical studies. The HMGB2 expression level was measured by Western blotting for three HCC cell lines. To clarify the precise role of HMGB2 on cell proliferation, we did in vitro analysis with expression vectors and small interfering RNAs. Results: HMGB2 mRNA and protein expression were significantly higher in HCC than in noncancerous surrounding tissues (P < 0.0001) and showed a positive correlation (rho = 0.35, P < 0.001). HMGB2 overexpression was significantly correlated with shorter overall survival time, both at mRNA (P = 0.0054) and protein level (P = 0.023). Moreover, HMGB2 mRNA level was an independent prognostic factor for overall survival in a multivariate analysis (P = 0.0037). HMGB2 knockdown by small interfering RNAs decreased cell proliferation, and overexpression of HMGB2 by expression vectors diminished cisplatinand etoposide-induced cell death. Conclusions: Our clinical and in vitro data suggest that HMGB2 plays a significant role in tumor development and prognosis of HCC. These results can partly be explained by altered cell proliferations by HMGB2 associated with the antiapoptotic pathway. Clin Cancer Res; 16( 22); 5511-21. (C) 2010 AACR.

引用

页码：5511 / 5521

页数：11

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