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首页> 外文期刊>Cellular Signalling >High-mobility group box 1 (HMGB1) protein regulates tumor-associated cell migration through the interaction with BTB domain
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High-mobility group box 1 (HMGB1) protein regulates tumor-associated cell migration through the interaction with BTB domain

机译：High-mobility group box 1 (HMGB1) protein regulates tumor-associated cell migration through the interaction with BTB domain

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摘要

High-mobility group box 1 (HMGB1) was shown to be strongly implicated in high incidences of metastasis and the poor clinical pathologic conditions found in various human tumors. In this study, we explored the possible mechanismof HMGB1 in tumormetastases in vitro, using a human carcinoma cell system. BTB, as a negative regulator of cell cycle progression,was identified as a HMGB1 interacting partner. The ectopic expression of HMGB1 activates cell growth by suppressing BTB-induced cell death, decreasing Bax and p53 expression, while enhancing Bcl-xL, Bcl-2, cyclin D1, and NF-κB expression. HMGB1 activates the FAK/PI3K/mTOR signaling cascade, and BTB prominently inhibits HMGB1-induced oncogenesis. The effect of HMGB1 on FAK/mTOR signaling was also confirmed through the silencing of HMGB1 expression. These insights provide evidence that HMGB1 enhances cell proliferation and suppresses apoptosis. Collectively, our results show an underlying mechanism for an HMGB1-associated promotion of carcinoma cells.

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