期刊
CELL REPORTS
卷 15, 期 9, 页码 1884-1892出版社
CELL PRESS
DOI: 10.1016/j.celrep.2016.04.072
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资金
- NCI Cancer Center Support Grant [P30 CA30199]
- Division of Cancer Epidemiology and Genetics at NCI
- National Health and Medical Research Council of Australia
- Joanna M. Nicolay Melanoma Foundation
- NCI [CA99961, CA172017]
- Melanoma Research Foundation
- Hervey Family Non-endowment Fund at The San Diego Foundation
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(Delta 8,9)) promotes development of melanoma in mouse models. Atf2(Delta 8,9)-driven tumors show enhanced pigmentation, immune infiltration, and metastatic propensity. Similar to mouse Atf2(Delta 8,9), 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.
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