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Overexpression of BACH1 mediated by IGF2 facilitates hepatocellular carcinoma growth and metastasis via IGF1R and PTK2

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单位: [1]Huazhong Univ Sci & Technol, Hubei Key Lab Hepatopancreatobiliary Dis, Inst Liver & Gastrointestinal Dis, Dept Gastroenterol,Tongji Hosp,Tongji Med Coll, Wuhan 430030, Hubei, Peoples R China [2]Huazhong Univ Sci & Technol, Hubei Key Lab Hepatopancreatobiliary Dis, Wuhan 430030, Hubei, Peoples R China [3]Huazhong Univ Sci & Technol, Hepat Surg Ctr, Tongji Hosp, Tongji Med Coll, Wuhan 430030, Hubei, Peoples R China [4]Minist Educ, Clin Med Res Ctr Hepat Surg Hubei Prov, Wuhan 430030, Hubei, Peoples R China [5]Minist Educ, Key Lab Organ Transplantat, Wuhan 430030, Hubei, Peoples R China [6]Minist Publ Hlth, Wuhan 430030, Hubei, Peoples R China [7]Zhengzhou Univ, Henan Prov Peoples Hosp, Dept Gastroenterol, Peoples Hosp, Zhengzhou 450004, Henan, Peoples R China
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关键词: BTB and CNC homology 1 Insulin-like growth factor 1 receptor Protein tyrosine kinase 2 Linsitinib Defactinib

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Background: Accumulating studies manifest that BTB and CNC homology 1 (BACH1) facilitates multiple malignancies progression and metastasis, and targeting the BACH1 pathway enhances antitumor efficacy. Nevertheless, the exact mechanism of BACH1 promoting growth and metastasis and its therapeutic significance in hepatocellular carcinoma (HCC) remain unclear. Methods: The expression of BACH1 in human HCC specimens and HCC cell lines was analyzed by quantitative RT-PCR (RT-qPCR), western blot, and immunohistochemistry (IHC). The invasiveness and metastasis of HCC cells in vitro and in vivo were evaluated using transwell assays and orthotopic xenograft models. The luciferase reporter assays and chromatin immunoprecipitation (ChIP) assays were performed to explore the transcriptional regulation of insulin-like growth factor 1 receptor (IGF1R) and protein tyrosine kinase 2 (PTK2) by BACH1. Results: BACH1 was prominently upregulated in human HCC samples and elevated BACH1 expression was associated with poor overall survival (OS) and high recurrence rates of HCC patients. BACH1 facilitated growth and metastasis of HCC by upregulating cell motility-related genes IGF1R and PTK2. Notably, insulin-like growth factor 2 (IGF2), the ligand of IGF1R, in turn upregulated BACH1 expression through the IGF1R-ERK1/2-ETS1 cascades, thus forming a positive feedback loop to provoke HCC growth and metastasis. Moreover, combining IGF1R inhibitor linsitinib with PTK2 inhibitor defactinib prominently suppressed BACH1-mediated HCC growth and metastasis. Conclusions: These results demonstrated the tumorigenic and pro-metastatic role of BACH1 in HCC, which could be a promising biomarker for predicting poor prognosis and selecting patients who could benefit from combination therapy of IGF1R-targeted and PTK2-directed.

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大类 | 1 区 医学
小类 | 1 区 医学:研究与实验
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大类 | 1 区 医学
小类 | 1 区 医学:研究与实验
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Q1 MEDICINE, RESEARCH & EXPERIMENTAL
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Q1 MEDICINE, RESEARCH & EXPERIMENTAL

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第一作者单位: [1]Huazhong Univ Sci & Technol, Hubei Key Lab Hepatopancreatobiliary Dis, Inst Liver & Gastrointestinal Dis, Dept Gastroenterol,Tongji Hosp,Tongji Med Coll, Wuhan 430030, Hubei, Peoples R China [2]Huazhong Univ Sci & Technol, Hubei Key Lab Hepatopancreatobiliary Dis, Wuhan 430030, Hubei, Peoples R China [3]Huazhong Univ Sci & Technol, Hepat Surg Ctr, Tongji Hosp, Tongji Med Coll, Wuhan 430030, Hubei, Peoples R China [4]Minist Educ, Clin Med Res Ctr Hepat Surg Hubei Prov, Wuhan 430030, Hubei, Peoples R China [5]Minist Educ, Key Lab Organ Transplantat, Wuhan 430030, Hubei, Peoples R China [6]Minist Publ Hlth, Wuhan 430030, Hubei, Peoples R China
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