Journal of Neuroimmunology. 2004 Dec; 157(1-2):17-26

Microarray Analysis of changes in cellular gene expression induced by productive infection of primary human astrocytes: implications for HAD.

Seon-Young Kim(1), Jinliang Li(1), Galina Bentsman(1), Andrew I. Brooks(2), and David J. Volsky(1)

(1)Molecular Virology Division, St. Luke's-Roosevelt Hospital Center, 432 West 58th Street, Antenucci Building, Room 709, New York, NY 10019, USA; (2)Functional Genomics Center, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY 14642, USA

The role of astrocytes in HIV-1 associated dementia (HAD) is not well understood. HIV-1 binds efficiently to astrocytes but infects only a small fraction of the cells in vitro and in vivo. To gain insight into the biology of HIV-1-expressing astrocytes, we productively infected human fetal astrocytes with pseudotyped HIV-1 and employed Affymetrix oligonucleotide microarrays to determine global changes in cellular gene expression at the peak of virus production. With a twofold change as a cutoff, HIV-1 increased transcription of 266 genes in astrocytes and suppressed expression of 468. The functions of highly expressed genes included interferon-mediated antiviral responses (OAS1, IFIT1), intercellular contacts (SH3, glia-derived nexin), cell homing/adhesion (matrix metalloproteinases), and cell-cell signaling (neuropilin 1 and 2). Surprisingly, genes involved in innate immune responses of astrocytes were largely unaffected. The single most significant effect of HIV-1, however, was down-modulation of at least 55 genes involved in control of cell cycle, DNA replication, and cell proliferation, which were overrepresented in these categories with probability scores of 10(-10)-10(-26). Our data suggest that HIV-1 expression in astrocytes profoundly alters host cell biology, with potential consequences for the physiological function of astrocytes during HIV-1 infection in the brain.

*Sample ID links to information in the NCBI Gene Expression Omnibus

 

Infection	Sample ID	Type	Target Source
Uninfected with VSV	VSV7day-7dayC1	single channel	Human Astrocytes
	VSV7day-7dayC2	single channel	Human Astrocytes
	VSV7day-7dayC3	single channel	Human Astrocytes
	VSV7day-7dayC4	single channel	Human Astrocytes
	VSV7day-7dayC5	single channel	Human Astrocytes
	VSV7day-7dayC6	single channel	Human Astrocytes
	VSV7day-7dayC7	single channel	Human Astrocytes
Infected with VSV	VSV7day-7dayV1	single channel	Human Astrocytes
	VSV7day-7dayV2	single channel	Human Astrocytes
	VSV7day-7dayV3	single channel	Human Astrocytes
	VSV7day-7dayV4	single channel	Human Astrocytes