CMX001 (1-O-hexadecyloxypropyl-cidofovir) inhibits polyomavirus JC replication in human brain progenitor-derived astrocytes

Gosert, Rainer and Rinaldo, Christine Hanssen and Wernli, Marion and Major, Eugene O. and Hirsch, Hans H.. (2011) CMX001 (1-O-hexadecyloxypropyl-cidofovir) inhibits polyomavirus JC replication in human brain progenitor-derived astrocytes. Antimicrobial agents and chemotherapy: AAC, Vol. 55, H. 5. pp. 2129-2136.

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Official URL: http://edoc.unibas.ch/dok/A6004777

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Polyomavirus JC (JCV) replication causes progressive multifocal leukoencephalopathy (PML), a frequently fatal brain disease in immunodeficient patients, yet antiviral drugs are lacking. We characterized the lipid conjugate 1-O-hexadecyloxypropyl-cidofovir (CMX001) regarding JCV (Mad-4) replication in human brain progenitor-derived astrocytes (PDA) and the simian virus 40 (SV40) large-T-antigen-expressing COS-7 cells up to 7 days postinfection (dpi). We examined JCV loads by PCR, the infection rate by immunofluorescence, and host cell toxicity by WST-1 and BrdU incorporation assays. Supernatants from CMX001-treated PDA demonstrated a drug concentration-dependent decrease in JCV loads and infectivity. CMX001 had only a modest effect on host cell metabolism but reduced overall BrdU incorporation. In PDA at 7 dpi, the CMX001 50% effective concentration (EC50) was 5.55 nM, the 50% cytotoxic concentration (CC50) was 184.6 nM, and the 50% selectivity index (SI50) was 33.3. The EC90 was 19.7 nM, the CC90 was 5,054 nM, and the SI90 was 256.1. In COS-7 cells, JCV replication was faster and the EC50 and EC90 were 18- and 37-fold higher than those in PDA, i.e., 0.1 ?M and 0.74 ?M (CC50, 0.67 ?M; SI50, 6.7; CC90, 12.2 ?M; SI90, 16.5) at 5 dpi. We conclude that CMX001 inhibits JCV replication at concentrations in vitro that can be attained by oral administration without significant side effects in clinical studies.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Division of Medical Microbiology > Transplantation Virology (Hirsch)
UniBasel Contributors:Gosert, Rainer and Hirsch, Hans H.
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Society for Microbiology
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:10 Apr 2015 09:14
Deposited On:25 Oct 2013 08:32

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