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J. Virol., 01 1998, 303-308, Vol 72, No. 1
B Ackerson, O Rey, J Canon and P Krogstad
Gag polyprotein-mediated incorporation of cellular cyclophilin A (CyPA)
into virions is essential for the formation of infectious human
immunodeficiency virus type 1 (HIV-1) virions. Either a point mutation in
Gag (P222A) or drugs which bind CyPA decrease virion incorporation of CyPA
and interfere with HIV-1 replication. We have found that lymphoid cells
varied greatly in their CyPA content and that cells with high CyPA content
supported the replication of P222A HIV-1 Gag mutants. These experiments
demonstrated that a higher cellular CyPA content of some cells was able to
compensate for the decreased binding affinity of P222A mutant Gag for CyPA,
allowing virus replication to occur.
Copyright © 1998, American Society for Microbiology
Cells with high cyclophilin A content support replication of human immunodeficiency virus type 1 Gag mutants with decreased ability to incorporate cyclophilin A
Department of Pediatrics, University of California, Los Angeles 90095, USA.
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