TWiV 1329: How HIV-1 goes nuclear

A paradigm-shifting discovery in HIV-1 virology reveals that the virus's conical capsid doesn't disassemble in the cytoplasm as previously believed—instead, it travels intact through the nuclear pore complex, which is larger than previously thought. Using advanced cryo-electron tomography, researchers captured HIV-1 capsids mid-transit through the nuclear pore in human T cells, with the narrow end leading and the structure remaining largely intact during passage. This challenges decades of textbook knowledge and suggests the capsid may protect the viral genome from immune sensors until it reaches the nucleus. The finding explains how HIV evades detection and opens new avenues for drug development targeting capsid stability. The episode also explores the growing threat of chronic wasting disease in deer, with prion transmission to non-human primates showing asymptomatic seeding activity—raising concerns about undetectable zoonotic risk. Meanwhile, the hosts express alarm over the U.S. government's systematic dismantling of science funding, citing frozen grants and political interference, which they argue is undermining public health and global scientific leadership.