MYC Drives Progression of Small Cell Lung Cancer to a Variant Neuroendocrine Subtype with Vulnerability to Aurora Kinase Inhibition

Publication date: Available online 12 January 2017
Source:Cancer Cell
Author(s): Gurkan Mollaoglu, Matthew R. Guthrie, Stefanie Böhm, Johannes Brägelmann, Ismail Can, Paul M. Ballieu, Annika Marx, Julie George, Christine Heinen, Milind D. Chalishazar, Haixia Cheng, Abbie S. Ireland, Kendall E. Denning, Anandaroop Mukhopadhyay, Jeffery M. Vahrenkamp, Kristofer C. Berrett, Timothy L. Mosbruger, Jun Wang, Jessica L. Kohan, Mohamed E. Salama, Benjamin L. Witt, Martin Peifer, Roman K. Thomas, Jason Gertz, Jane E. Johnson, Adi F. Gazdar, Robert J. Wechsler-Reya, Martin L. Sos, Trudy G. Oliver
Loss of the tumor suppressors RB1 and TP53 and MYC amplification are frequent oncogenic events in small cell lung cancer (SCLC). We show that Myc expression cooperates with Rb1 and Trp53 loss in the mouse lung to promote aggressive, highly metastatic tumors, that are initially sensitive to chemotherapy followed by relapse, similar to human SCLC. Importantly, MYC drives a neuroendocrine-low "variant" subset of SCLC with high NEUROD1 expression corresponding to transcriptional profiles of human SCLC. Targeted drug screening reveals that SCLC with high MYC expression is vulnerable to Aurora kinase inhibition, which, combined with chemotherapy, strongly suppresses tumor progression and increases survival. These data identify molecular features for patient stratification and uncover a potential targeted treatment approach for MYC-driven SCLC.

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Teaser

Mollaoglu et al. generate a mouse model of small cell lung cancer (SCLC) with elevated Myc expression and loss of Rb1 and Trp53. MYC promotes a neuroendocrine-low variant subtype of SCLC, which is paralleled in patients. Mouse and human SCLC with high MYC levels display sensitivity to Aurora kinase inhibition.


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