Quantitative subcellular reconstruction reveals a lipid mediated inter-organelle biogenesis network

Richard G. Lee, Danielle L. Rudler, Samuel A. Raven, Liuyu Peng, Anaëlle Chopin, Edward S.X. Moh, Tim McCubbin, Stefan J. Siira, Samuel V. Fagan, Nicholas J. DeBono, Maike Stentenbach, Jasmin Browne, Filip F. Rackham, Ji Li, Kaylene J. Simpson, Esteban Marcellin, Nicolle H. Packer, Gavin E. Reid, Benjamin S. Padman, Oliver RackhamAleksandra Filipovska

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The structures and functions of organelles in cells depend on each other but have not been systematically explored. We established stable knockout cell lines of peroxisomal, Golgi and endoplasmic reticulum genes identified in a whole-genome CRISPR knockout screen for inducers of mitochondrial biogenesis stress, showing that defects in peroxisome, Golgi and endoplasmic reticulum metabolism disrupt mitochondrial structure and function. Our quantitative total-organelle profiling approach for focussed ion beam scanning electron microscopy revealed in unprecedented detail that specific organelle dysfunctions precipitate multi-organelle biogenesis defects, impair mitochondrial morphology and reduce respiration. Multi-omics profiling showed a unified proteome response and global shifts in lipid and glycoprotein homeostasis that are elicited when organelle biogenesis is compromised, and that the resulting mitochondrial dysfunction can be rescued with precursors for ether-glycerophospholipid metabolic pathways. This work defines metabolic and morphological interactions between organelles and how their perturbation can cause disease.

Original languageEnglish
Pages (from-to)57-71
Number of pages15
JournalNature Cell Biology
Issue number1
Early online date21 Dec 2023
Publication statusPublished - Jan 2024

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