A proinflammatory cytokine inhibits p53 tumor suppressor activity.
A proinflammatory cytokine inhibits p53 tumor suppressor activity.
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DOI:
10.1084/jem.190.10.1375
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发表时间:
1999-11-15
期刊:
影响因子:
--
通讯作者:
Beach DH
中科院分区:
文献类型:
--
作者:
Hudson JD;Shoaibi MA;Maestro R;Carnero A;Hannon GJ;Beach DH
p53 has a key role in the negative regulation of cell proliferation, in the maintenance of genomic stability, and in the suppression of transformation and tumorigenesis. To identify novel regulators of p53, we undertook two functional screens to isolate genes which bypassed either p53-mediated growth arrest or apoptosis. In both screens, we isolated cDNAs encoding macrophage migration inhibitory factor (MIF), a cytokine that was shown previously to exert both local and systemic proinflammatory activities. Treatment with MIF overcame p53 activity in three different biological assays, and suppressed its activity as a transcriptional activator. The observation that a proinflammatory cytokine, MIF, is capable of functionally inactivating a tumor suppressor, p53, may provide a link between inflammation and tumorigenesis.
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