MYC regulates ribosome biogenesis and mitochondrial gene expression programs through interaction with Host Cell Factor-1
Tessa M Popay,
Clare M Adams,
Simona G Codreanu,
John A. McClean,
Lance R Thomas,
Shelly L Lorey,
Yuichi J Machida,
April M Weissmiller,
Christine M Eischen,
William. P. Tansey
Posted 23 Jun 2020
bioRxiv DOI: 10.1101/2020.06.22.164764
Posted 23 Jun 2020
The oncoprotein transcription factor MYC is a major driver of malignancy and a highly-validated but challenging target for development of anti-cancer therapies. Novel strategies to inhibit MYC may come from understanding the co-factors it uses to drive pro-tumorigenic gene expression programs, providing their role in MYC activity is understood. Here, we interrogate how one MYC co-factor, Host Cell Factor (HCF)-1, contributes to MYC activity in a Burkitt lymphoma setting. We identify genes connected to mitochondrial function and ribosome biogenesis as direct MYC/HCF-1 targets, and demonstrate how modulation of the MYC-HCF-1 interaction influences cell growth, metabolite profiles, global gene expression patterns, and tumor growth in vivo. This work defines HCF-1 as a critical MYC co-factor, places the MYC-HCF-1 interaction in biological context, and highlights HCF-1 as a focal point for development of novel anti-MYC therapies. ### Competing Interest Statement The authors have declared no competing interest.
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