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GNPS Metabolomics Workbench ST001429 - GNPS MYC regulates ribosome biogenesis and mitochondrial gene expression programs through its interaction with Host Cell Factor-1

ABSTRACT: b'MYC is an oncoprotein transcription factor that is overexpressed in the majority cancers. Although MYC itself is considered undruggable, it may be possible to inhibit MYC by targeting the co-factors it uses to drive oncogenic gene expression patterns. Here, we use loss- and gain- of function approaches to interrogate how one MYC co-factorHost Cell Factor (HCF)-1contributes to MYC activity in a Burkitt lymphoma setting. We identify high-confidence direct targets of the MYCHCF-1 interaction that are regulated through a recruitment-independent mechanism, including genes that control mitochondrial function and rate-limiting steps for ribosome biogenesis and translation. We describe how these gene expression events impact cell growth and metabolism, and demonstrate that the MYCHCF-1 interaction is essential for tumor maintenance in vivo. This work highlights the MYCHCF-1 interaction as a focal point for development of novel anti-cancer therapies.'

INSTRUMENT(S): Q Exactive HF

ORGANISM(S): Homo Sapiens

SUBMITTER: Simona Codreanu

PROVIDER: MSV000086896 | GNPS | Wed Feb 17 19:28:00 GMT 2021

REPOSITORIES: GNPS

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MYC regulates ribosome biogenesis and mitochondrial gene expression programs through its interaction with Host Cell Factor-1

Project description:MYC is an oncoprotein transcription factor that is overexpressed in the majority cancers. Although MYC itself is considered undruggable, it may be possible to inhibit MYC by targeting the co-factors it uses to drive oncogenic gene expression patterns. Here, we use loss- and gain- of function approaches to interrogate how one MYC co-factor—Host Cell Factor (HCF)-1—contributes to MYC activity in a Burkitt lymphoma setting. We identify high-confidence direct targets of the MYC–HCF-1 interaction that are regulated through a recruitment-independent mechanism, including genes that control mitochondrial function and rate-limiting steps for ribosome biogenesis and translation. We describe how these gene expression events impact cell growth and metabolism, and demonstrate that the MYC–HCF-1 interaction is essential for tumor maintenance in vivo. This work highlights the MYC–HCF-1 interaction as a focal point for development of novel anti-cancer therapies.

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