New Publication from Khokha and Kislinger and Labs Featured on Cover of Nature
MBP scientists Dr. Rama Khokha and Dr. Thomas Kislinger have led a team of researchers, which includes MBP scientists Dr. Marianne Koritzinsky and Dr. David Schimmer, in the publication of a new Nature article entitled ‘Mammary epithelial cells have lineage-rooted metabolic identities’. The article was highlighted on the cover of the esteemed scientific journal, which displays an image of ‘cyan mito-dendra2 reporter with mammary cell markers’ generated by Hyeyeon Kim, MBP PhD grad and postdoctoral researcher in the Khokha Lab.
'Cancer metabolism adapts the metabolic network of its tissue of origin. However, breast cancer is not a disease of a single origin. Multiple epithelial populations serve as the culprit cell of origin for specific breast cancer subtypes, yet our knowledge of the metabolic network of normal mammary epithelial cells is limited. Using a multi-omic approach, here we identify the diverse metabolic programmes operating in normal mammary populations. The proteomes of basal, luminal progenitor and mature luminal cell populations revealed enrichment of glycolysis in basal cells and of oxidative phosphorylation in luminal progenitors. Single-cell transcriptomes corroborated lineage-specific metabolic identities and additional intra-lineage heterogeneity. Mitochondrial form and function differed across lineages, with clonogenicity correlating with mitochondrial activity. Targeting oxidative phosphorylation and glycolysis with inhibitors exposed lineage-rooted metabolic vulnerabilities of mammary progenitors. Bioinformatics indicated breast cancer subtypes retain metabolic features of their putative cell of origin. Thus, lineage-rooted metabolic identities of normal mammary cells may underlie breast cancer metabolic heterogeneity and targeting these vulnerabilities could advance breast cancer therapy.'