CCAAT/enhancer binding proteins in normal mammary development and breast cancer.

CCAAT/enhancer binding proteins in normal mammary development and breast cancer.
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DOI:
10.1186/bcr428
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发表时间:
2002
期刊:
Breast cancer research : BCR
影响因子:
--
通讯作者:
Zahnow CA
Zahnow CA
中科院分区:
其他
文献类型:
--
作者:
Zahnow CA

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CCAAT/增强子结合蛋白 (C/EBP) 是亮氨酸拉链家族、转录因子,以同二聚体和异二聚体形式与 DNA 结合。它们调节乳腺中的细胞增殖、分化和凋亡。通过 C/EBPβ 转录物的翻译或通过全长 C/EBPβ 蛋白的蛋白水解切割产生多种蛋白质亚型,包括截短的显性失活。单个 C/EBP 家族成员的基因删除已证明 C/EBPβ 在正常乳腺发育中发挥着重要作用,而转基因和过度表达研究提供了证据,表明显性失活的 C/EBPβ-肝脏富集的抑制蛋白亚型可诱导乳腺上皮细胞增殖。越来越多的证据表明,C/EBPβ-肝脏富集的抑制蛋白亚型和C/EBPβ-肝脏富集的激活蛋白亚型的比例变化可能在乳腺癌的发展中发挥作用。因此,本综述将重点关注 C/EBP 在正常乳房发育中的作用以及支持其在乳腺癌中的作用的新数据。
CCAAT/enhancer binding proteins (C/EBPs) are a family of leucine zipper, transcription factors that bind to DNA as homodimers and heterodimers. They regulate cellular proliferation, differentiation and apoptosis in the mammary gland. Multiple protein isoforms, including truncated, dominant negatives, are generated by translation of the C/EBPβ transcript or via proteolytic cleavage of the full-length C/EBPβ protein. Gene deletion of individual C/EBP family members has demonstrated an essential role for C/EBPβ in normal mammary development, while transgenic and overexpression studies provide evidence that the dominant-negative C/EBPβ-liver-enriched inhibitory protein isoform induces proliferation in mammary epithelial cells. Mounting evidence suggests that alterations in the ratio of the C/EBPβ-liver-enriched inhibitory protein isoform and the C/EBPβ-liver-enriched activating protein isoform may play a role in the development of breast cancer. This review will consequently focus on C/EBP actions in normal mammary development and on the emerging data that supports a role in breast cancer.
DOI: 10.1093/nar/18.10.2977
发表时间: 1990-05-25
影响因子: 14.9
作者:
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期刊: EMBO JOURNAL
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发表时间: 1999-12-01
期刊: MOLECULAR CELL
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Buck, M;Poli, V;Hunter, T
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