B-Myb accelerates colorectal cancer progression through reciprocal feed-forward transactivation of E2F2.

B-Myb accelerates colorectal cancer progression through reciprocal feed-forward transactivation of E2F2.
复制标题

B-Myb 通过 E2F2 的相互前馈​​反式激活加速结直肠癌进展

DOI:
10.1038/s41388-021-01961-9
复制
发表时间:
2021-09
期刊:
影响因子:
8
通讯作者:
Bu Y
Bu Y
中科院分区:
医学1区
文献类型:
--
作者:
Fan X;Wang Y;Jiang T;Liu T;Jin Y;Du K;Niu Y;Zhang C;Liu Z;Lei Y;Bu Y

文献摘要

参考文献

被引文献

相似文献

B-Myb 是一种重要的转录因子,在基因表达调控和肿瘤发生中发挥着关键作用。然而,其在结直肠癌中的功能意义仍然难以捉摸。在这项研究中,我们发现,与非肿瘤样本相比,结直肠癌样本中 B-Myb 的 mRNA 和蛋白质水平均显着上调。 B-Myb 过表达加速结直肠癌细胞的细胞增殖、细胞周期进程和细胞运动,并促进体内原位裸鼠模型中的肿瘤生长。相反,B-Myb 消耗抑制了这些恶性表型。机制研究表明,E2F2 是 B-Myb 的一个新转录靶标,对于 B-Myb 诱导的恶性表型至关重要。值得注意的是,B-Myb 和 E2F2 在结直肠癌细胞中表现出正表达相关性,并且彼此相互作用。除了自身调节机制外,B-Myb 和 E2F2 还可以直接相互反式激活,从而构成巩固的相互前馈​​反式激活环。此外,B-Myb 和 E2F2 都是结直肠癌细胞中 ERK 和 AKT 信号通路激活所必需的。总而言之,我们的数据阐明了 B-Myb 在结直肠癌中的关键作用,并揭示了 B-Myb 和 E2F2 之间微妙的相互协作和相互交叉调节,导致人类结直肠癌的恶性进展。
B-Myb is an important transcription factor that plays a critical role in gene expression regulation and tumorigenesis. However, its functional implication in colorectal cancer remains elusive. In this study, we found that B-Myb was significantly upregulated at both mRNA and protein levels in colorectal cancer samples compared to non-tumor counterparts. B-Myb overexpression accelerated cell proliferation, cell cycle progression and cell motility in colorectal cancer cells, and promoted tumor growth in orthotopic nude mouse models in vivo. In contrast, B-Myb depletion inhibited these malignant phenotypes. Mechanistic investigations revealed that E2F2 was a novel transcriptional target of B-Myb and is essential to B-Myb-induced malignant phenotypes. Notably, B-Myb and E2F2 exhibited positive expression correlation, and interacted with each other in colorectal cancer cells. In addition to their autoregulatory mechanisms, B-Myb and E2F2 can also directly transactivate each other, thus constituting consolidated reciprocal feed-forward transactivation loops. Moreover, both B-Myb and E2F2 are required for the activation of ERK and AKT signaling pathways in colorectal cancer cells. Taken together, our data clarified a critical role for B-Myb in colorectal cancer and unraveled an exquisite mutual collaboration and reciprocal cross regulation between B-Myb and E2F2 that contribute to the malignant progression of human colorectal cancer.
DOI: 10.1200/jco.2010.28.9538
发表时间: 2010-09-01
影响因子: 45.3
作者:
O'Connell, Michael J.;Lavery, Ian;Wolmark, Norman
通讯作者: Wolmark, Norman
DOI: 10.1152/ajpgi.00066.2011
发表时间: 2011-09-01
影响因子: 4.5
作者:
Papetti, Michael;Augenlicht, Leonard H.
通讯作者: Augenlicht, Leonard H.
B-Myb 在非小细胞肺癌中上调并促进细胞生长和运动
DOI: 10.3390/ijms18060860
发表时间: 2017-05-27
影响因子: 5.6
作者:
Jin Y;Zhu H;Cai W;Fan X;Wang Y;Niu Y;Song F;Bu Y
通讯作者: Bu Y
DOI: 10.1002/hep.24174
发表时间: 2011-04-01
期刊: HEPATOLOGY
影响因子: 13.5
作者:
Calvisi, Diego F.;Simile, Maria M.;Pascale, Rosa M.
通讯作者: Pascale, Rosa M.
DOI: 10.1093/nar/16.23.11075
发表时间: 1988-12-09
影响因子: 14.9
作者:
NOMURA, N;TAKAHASHI, M;ISHIZAKI, R
通讯作者: ISHIZAKI, R