Bicaudal D2 facilitates the cytoplasmic trafficking and nuclear import of HIV-1 genomes during infection

Adarsh Dharan, Silvana Opp, Omar Abdel-Rahim, Sevnur Komurlu Keceli, Sabrina Imam, Felipe Diaz-Griffero, Edward M. Campbell

Research output: Contribution to journalArticlepeer-review

65 Scopus citations


Numerous viruses, including HIV-1, exploit the microtubule network to traffic toward the nucleus during infection. Although numerous studies have observed a role for the minus-end microtubule motor dynein in HIV-1 infection, the mechanism by which the viral core containing the viral genome associates with dynein and induces its perinuclear trafficking has remained unclear. Here, we report that the dynein adapter protein bicaudal D2 (BICD2) is able to interact with HIV-1 viral cores in target cells. We also observe that BICD2 can bind in vitro-assembled capsid tubes through its CC3 domain. We observe that BICD2 facilitates infection by promoting the trafficking of viral cores to the nucleus, thereby promoting nuclear entry of the viral genome and infection. Finally, we observe that depletion of BICD2 in the monocytic cell line THP-1 results in an induction of IFN-stimulated genes in these cells. Collectively, these results identify a microtubule adapter protein critical for trafficking of HIV-1 in the cytoplasm of target cells and evasion of innate sensing mechanisms in macrophages.

Original languageEnglish (US)
Pages (from-to)E10707-E10716
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number50
StatePublished - Dec 12 2017


  • BICD2
  • Dynein
  • HIV-1
  • Microtubules
  • Trafficking

ASJC Scopus subject areas

  • General


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