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JAC Advance Access published online on November 18, 2002
Journal of Antimicrobial Chemotherapy, doi:10.1093/jac/dkf234
© 2002 by The British Society for Antimicrobial Chemotherapy
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© 2002 The British Society for Antimicrobial Chemotherapy

Original Paper

Differential expression of genes encoding immunomodulatory proteins in response to amphotericin B in human mononuclear cells identified by cDNA microarray analysis

P. David Rogers 1*, Margaret M. Pearson 2, John D. Cleary 3, Donna C. Sullivan 4, Stanley W. Chapman 4

1 Department of Pharmacy Practice, Division of Infectious Diseases, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA; Department of Medicine, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA; Department of Microbiology, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA
2 Department of Medicine, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA
3 Department of Pharmacy Practice, Division of Infectious Diseases, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA; Department of Medicine, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA
4 Department of Medicine, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA; Department of Microbiology, University of Mississippi Schools of Pharmacy and Medicine, Jackson, MS 39216-4505, USA

* Corresponding author. E-mail: drogers{at}utmem.edu.

Received 15 April 2002 ; revised 19 August 2002 ; accepted 6 September 2002

Abstract

Amphotericin B (AMB) is an antifungal agent that possesses immunomodulatory properties that may contribute to its infusion-related toxicity and activity. It has previously been shown to induce the expression of genes encoding the cytokines interleukin (IL)-1{beta} and tumour necrosis factor (TNF)-{alpha} and the chemokines IL-8 and macrophage inflammatory protein (MIP)-1{beta} in the human monocytic cell line THP-1. In an effort to identify additional AMB-responsive genes, the gene expression profiles of both THP-1 cells and human peripheral blood mononuclear cells (hPBMCs) on exposure to AMB were assessed using cDNA microarray analysis. In addition to genes known to be AMB responsive, we found the genes encoding IL-1{alpha} and MIP-1{alpha} to be AMB responsive in both THP-1 cells and hPBMCs. Increases in MIP-1{alpha} and MIP-1{beta} were also observed in the supernatants of hPBMCs exposed to AMB. The expression of several genes in response to AMB was unique to either cell type. Furthermore, variability in gene expression in hPBMCs was observed between donors. These genes and respective gene products may have significance in the infusion-related toxicity and activity of AMB.


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