| Literature DB >> 27210757 |
Giuseppina Claps1, Yann Cheli1, Tongwu Zhang2, Marzia Scortegagna1, Eric Lau1, Hyungsoo Kim1, Jianfei Qi1, Jian-Liang Li1, Brian James1, Andreas Dzung3, Mitchell P Levesque3, Reinhard Dummer3, Nicholas K Hayward4, Marcus Bosenberg5, Kevin M Brown2, Ze'ev A Ronai6.
Abstract
Melanoma is one of the most lethal cutaneous malignancies, characterized by chemoresistance and a striking propensity to metastasize. The transcription factor ATF2 elicits oncogenic activities in melanoma, and its inhibition attenuates melanoma development. Here, we show that expression of a transcriptionally inactive form of Atf2 (Atf2(Δ8,9)) promotes development of melanoma in mouse models. Atf2(Δ8,9)-driven tumors show enhanced pigmentation, immune infiltration, and metastatic propensity. Similar to mouse Atf2(Δ8,9), we have identified a transcriptionally inactive human ATF2 splice variant 5 (ATF2(SV5)) that enhances the growth and migration capacity of cultured melanoma cells and immortalized melanocytes. ATF2(SV5) expression is elevated in human melanoma specimens and is associated with poor prognosis. These findings point to an oncogenic function for ATF2 in melanoma development that appears to be independent of its transcriptional activity.Entities:
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Year: 2016 PMID： 27210757 PMCID： PMC4889472 DOI： 10.1016/j.celrep.2016.04.072
Source DB: PubMed Journal: Cell Rep Impact factor: 9.423