The regulatory mechanisms of human immunodeficiency virus replication predict multiple expression rates.
The qualitative nature of human immunodeficiency virus replication dynamics is examined by using the known action of regulatory proteins. The combination of activation of transcription by the Tat protein and the influence of the Rev protein on processing of RNA leads to a regulatory loop that can have multiple expression rates. In the lower state, the regulatory loop leads to low, or no, production of virus, which corresponds to its quiescent state. Conversely, when the regulatory loop is in the upper state, active production of virus is maintained over time. These features of the kinetic model have implications for both human immunodeficiency virus-related illness and therapeutics and predict testable experimental results in vitro.
Palsson
B O
BO
Department of Chemical Engineering, University of Michigan, Ann Arbor 48109.
Keasling
J D
JD
Emerson
S G
SG
D015696:Gene Products, tat / Q000378:metabolism; D006678:HIV / Q000235:genetics / Q000502:physiology*; D007700:Kinetics; D008433:Mathematics; D008954:Models, Biological; D014158:Transcription, Genetic; D015533:Transcriptional Activation; D014764:Viral Proteins / Q000096:biosynthesis / Q000378:metabolism*; D014779:Virus Replication; D054322:tat Gene Products, Human Immunodeficiency Virus
D015696:Gene Products, tat; D014764:Viral Proteins; D054322:tat Gene Products, Human Immunodeficiency Virus