HGFK1 inhibits bone metastasis in breast cancer through the TAK1/p38 MAPK signaling pathway
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摘要Breast cancer metastasis to bone represents a devastating complication of advanced breast cancer, frequently resulting in significant increases in morbidity and mortality. An understanding of the mechanisms that govern breast cancer metastasis at the molecular level should lead to more effective therapies. Recently, the kringle 1 domain of human hepatocyte growth factor (HGFK1) was identified as a candidate metastasis suppressor gene. Here, we investigated whether HGFK1 is a key regulator of breast cancer bone metastasis. Of the 193 human breast carcinoma tissue samples examined, HGFK1 expression was relative higher in 82 (42.4%) by western blot and in 84 (43.5%) by quantitative real-time PCR. The higher expression of HGFK1 was significantly associated with a better prognostic value (P<0.001) and inversely correlated with bone metastasis (P = 0.003). The efficacy of adeno-associated virus carrying HGFK1 (AAV-HGFK1) in osteolytic bone metastasis was then evaluated using an in vivo bone metastasis model. AAV-HGFK1 significantly inhibited osteolytic bone metastasis and prolonged the survival of mice in this model (P<0.01). In vitro, HGFK1 expression resulted in significant anti-invasion effects, enhanced the phosphorylation of TAK1 (transforming growth factor-beta-activated kinase 1), p38 MAPK (mitogen-activated protein kinase) and MAPKAPK2 (MAPK-activated protein kinase 2) and decreased the expression of receptor activator of nuclear factor-kappa B (RANK), which was abrogated by the p38 MAPK inhibitor SB203580. This study shows for the first time that HGFK1 significantly inhibits the metastasis of breast cancer to bone by activating the TAK1/p38 MAPK signaling pathway and inhibiting RANK expression. Thus, AAV-HGFK1 treatment represents a potential therapy for bone metastasis in breast cancer.
著者Yao Y, Fang ZP, Chen H, Yue L, Min DI, Tang LN, Yu WX, Kung HF, Lin MC, Shen Z
期刊名稱Cancer Gene Therapy
出版年份2012
月份9
日期1
卷號19
期次9
出版社Nature Publishing Group: Open Access Hybrid Model Option B
頁次601 - 608
國際標準期刊號0929-1903
語言英式英語
關鍵詞AAV-HGFK1; bone metastasis; breast cancer; TAK1/p38 MAPK
Web of Science 學科類別Biotechnology & Applied Microbiology; BIOTECHNOLOGY & APPLIED MICROBIOLOGY; Genetics & Heredity; GENETICS & HEREDITY; Medicine, Research & Experimental; MEDICINE, RESEARCH & EXPERIMENTAL; Oncology; ONCOLOGY; Research & Experimental Medicine

上次更新時間 2020-27-10 於 01:09