How Unlocking The Secrets Of Nano Vaults Could Revolutionize Disease Cures

·1 hr·4 clips

Rome says yeast can produce kilogram quantities of vaults, then describes the INT “zip code” that sends proteins inside them.

1. Nature and Science Podcast and the episode title focus on nano-vaults, the small protein capsules Dr. Leonard Rome says cell biology textbooks ignored. 2. Host Don Murphy, a UCLA biological chemistry professor and chief scientific officer at Vault Pharma, interviews Dr. Leonard Rome, the scientist who discovered vaults in 1986 with Dr. Nancy Kerdersha. 3. The episode asks why vaults exist at all and whether their preserved structure points to a hidden cellular function or a tool for engineering. 4. Rome describes growing up in Youngstown, Ohio, collecting stamps and making artwork before a summer job in a small lab studying prostaglandins pushed him toward research. 5. He says his NIH postdoctoral work in Elizabeth Neufeld’s laboratory on lysosomal diseases trained him in cell biology before he joined UCLA as an assistant professor. 6. Rome explains that his lab was purifying coated vesicles for lysosomal enzymes when they stumbled on an oblong, football-shaped particle that turned out to be unrelated. 7. He says negative staining with uranyl acetate made the particle’s arches look like cathedral vaults, which led to the name “vault” after a lab naming contest. 8. Rome says vaults are highly expressed in eukaryotic cells, absent from prokaryotes, and found in every tissue of the mouse. 9. He gives an estimate of about 10,000 vaults in the average cell and says they sit in the cytoplasm rather than the nucleus. 10. Rome says vaults are about three times the size of a ribosome yet do not stain the same way, which is why cell biologists missed them for so long. 11. He reports that knocking out vaults does not create an obvious lethal phenotype, so they do not appear to perform a single essential housekeeping role. 12. Rome says Dictyostelium discoideum kept vault proteins through development and even into spores, which suggests some conserved advantage. 13. He explains that the major vault protein makes up about 70% of the particle, weighs roughly 100 kilodaltons, and 78 copies build the shell. 14. Rome says the major vault protein had no obvious relatives in protein databases, which made the particle harder to classify. 15. He describes a key finding that vaults are built on polyribosomes one particle at a time, rather than by free major vault protein floating in the cytoplasm. 16. Rome says the lab later used yeast and insect cells to make empty vaults and attach an INT “zip code” that directs other proteins inside the particle. 17. He says that design produced luciferase-loaded vaults that glow, which helped make the assembly process visible and practical for follow-up work. 18. Rome says vaults are being adapted for drug delivery, vaccine-like immune stimulation, and environmental remediation of dyes, PFAS molecules, and bisphenol A. 19. The conversation is explanatory and technical, with Rome using analogies such as a “fine volume control knob” and Murphy repeatedly checking definitions for a general audience. 20. Listeners interested in cell biology, immune signaling, and protein engineering would likely follow it, while people wanting a simple general-science overview may skip it.

As heard by us

An obscure cell mystery becomes easier to follow through a clear visual explanation and a patient scientific conversation.

A small protein capsule inside the cell gives this conversation a clear center, and the discussion does a good job of making an old cell-biology puzzle feel understandable. Dr.

Read the full review in PlayNext →

Why you'd press play

You want one hard cell-biology mystery made surprisingly watchable.

Read the full recommendation in PlayNext →

Listen to the show on

Apple Podcasts Spotify

Play clips from this episode More from Nature and Science Podcast