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Identification and characterization of GDF6 as a driver of melanoma

Melanoma-directed immunotherapies have improved quality of life and outcome for many patients with this malignancy. Unfortunately, treatment resistance develops in some individuals and other patients do not respond to therapy; therefore, there remains a need for additional intervention targets for this devastating disease. In this episode, Craig Ceol and Arvind Venkatesan discuss their recent study, which identifies GDF6-mediated BMP signaling as a driver of melanoma. Importantly, upregulation of this GDF6 in patients with melanoma associated with increased metastasis and decreased survival, supporting further development of strategies to target GDF6/BMP signaling.

Published December 4, 2017, by Corinne Williams

Author's Take

Related articles

Ligand-activated BMP signaling inhibits cell differentiation and death to promote melanoma
Arvind M. Venkatesan, … , Michael Green, Craig J. Ceol
Arvind M. Venkatesan, … , Michael Green, Craig J. Ceol
Published January 2, 2018
Citation Information: J Clin Invest. 2018;128(1):294-308. https://doi.org/10.1172/JCI92513.
View: Text | PDF
Categories: Research Article Development Oncology

Ligand-activated BMP signaling inhibits cell differentiation and death to promote melanoma

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Abstract

Oncogenomic studies indicate that copy number variation (CNV) alters genes involved in tumor progression; however, identification of specific driver genes affected by CNV has been difficult, as these rearrangements are often contained in large chromosomal intervals among several bystander genes. Here, we addressed this problem and identified a CNV-targeted oncogene by performing comparative oncogenomics of human and zebrafish melanomas. We determined that the gene encoding growth differentiation factor 6 (GDF6), which is the ligand for the BMP family, is recurrently amplified and transcriptionally upregulated in melanoma. GDF6-induced BMP signaling maintained a trunk neural crest gene signature in melanomas. Additionally, GDF6 repressed the melanocyte differentiation gene MITF and the proapoptotic factor SOX9, thereby preventing differentiation, inhibiting cell death, and promoting tumor growth. GDF6 was specifically expressed in melanomas but not melanocytes. Moreover, GDF6 expression levels in melanomas were inversely correlated with patient survival. Our study has identified a fundamental role for GDF6 and BMP signaling in governing an embryonic cell gene signature to promote melanoma progression, thus providing potential opportunities for targeted therapy to treat GDF6-positive cancers.

Authors

Arvind M. Venkatesan, Rajesh Vyas, Alec K. Gramann, Karen Dresser, Sharvari Gujja, Sanchita Bhatnagar, Sagar Chhangawala, Camilla Borges Ferreira Gomes, Hualin Simon Xi, Christine G. Lian, Yariv Houvras, Yvonne J. K. Edwards, April Deng, Michael Green, Craig J. Ceol

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ISSN: 0021-9738 (print), 1558-8238 (online)

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