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Organellar lipid codes

Prof. Dr. Joost Holthuis, Ph.D.

Prof. Dr. Joost Holthuis, Ph.D.

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Curriculum Vitae

Publikationen

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The identity and function of cellular organelles critically relies on information encoded in their lipid bilayers. In the Holthuis lab, we study the functional implications of, and compensatory cellular responses to disease-induced imbalances in organellar lipid codes, with a main focus on aberrant distributions of sphingolipids. As approach, we develop disease-relevant cell models and exploit functionalized lipid probes to interrogate organellar lipid codes and capture novel lipid effector proteins.

Research topics

  • Tumor suppressor lipids
  • Sphingolipid-mediated membrane repair
  • Plasticity and biological impact of organellar lipid codes
  • Protein-lipid crosstalk

Model systems

  • Genetically engineered cell-lines
  • Reconstituted membrane systems
  • Cell-free produced membrane proteins

Methods

  • Live-cell imaging
  • Genetic engineering
  • Organellar lipidomics
  • Light-operated lipid probes
  • Switchable lipid transfer proteins
  • Functional reconstitution of membrane proteins

Selected publications

Dadsena S, Bockelmann S, Mina JG, Hassan D, Korneev S, Razzera G, Jahn H, Niekamp P, Müller D, Schneider M, Tafesse FG, Marrink SJ, Melo MN & Holthuis JC (2019) Ceramides bind VDAC2 to trigger mitochondrial apoptosis. Nat Commun 10, 1832, doi: 10.1038/s41467-019-09654-4. pdf

Kol M, Williams B, Toombs-Ruane H, Franquelim HG, Korneev S, Schroeer C, Schwille P, Trauner D, Holthuis JC & Frank JA (2019) Optical manipulation of sphingolipid biosynthesis using photoswitchable ceramides. eLife 8, e43230, doi: 10.7554/eLife.43230. pdf

Holthuis JC & Menon AM (2014) Lipid landscapes and pipelines in membrane homeostasis. Nature 510, 48-57, doi: 10.1038/nature13474. pdf