WIN55,212-2-mediated inhibition of HIV-1 expression in microglial cells: Involvement of cannabinoid receptors

R B Rock, Genya Gekker, Shuxian Hu, Wen Sheng, Guy A. Cabral, Billy R. Martin, Phillip K. Peterson

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


Cannabinoid receptors CB1 and CB2 are primarily expressed in cells of the nervous and immune systems, respectively. Recently, the synthetic CB1/CB2 agonist WIN55,212-2 was found to suppress replication of HIV-1 in microglial cell cultures. The present study was undertaken to test the hypothesis that WIN55,212-2's antiviral effect is mediated via CB2 receptors. By reverse transcription-polymerase chain reaction, microglia were found to express both CB1 and CB 2 receptors. Using additional CB1/CB2 receptor agonists and selective antagonists, we found that CB2 receptors are involved in WIN55,212-2's antiviral activity and surprisingly that the CB 1 receptor-selective antagonist SR141716A behaved as an agonist in these brain macrophages.

Original languageEnglish (US)
Pages (from-to)178-183
Number of pages6
JournalJournal of Neuroimmune Pharmacology
Issue number2
StatePublished - Jun 2007

Bibliographical note

Funding Information:
Acknowledgements This work was supported by grants from National Institute on Drug Abuse, DA-04381 and DA-09789, and was supported in part by U.S. Public Health Service grant DA-04381.


  • Cannabinoids
  • HIV-1
  • Microglia
  • SR141716A
  • WIN55,212-2


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