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

Rainer Gosert1, Christine Hanssen Rinaldo, Marion Wernli

  • 1Transplantation Virology, Institute for Medical Microbiology, Department of Biomedicine, University of Basel, and Infectious Diseases & Hospital Epidemiology, University Hospital Basel, Petersplatz 10, CH-4003 Basel, Switzerland.

Antimicrobial Agents and Chemotherapy
|March 16, 2011
PubMed

Insights

CMX001 effectively inhibits JC virus (JCV) replication in human brain cells, offering a potential treatment for progressive multifocal leukoencephalopathy (PML). This antiviral shows promise for patients with compromised immune systems.

Area of Science:

  • Virology
  • Neuroscience
  • Pharmacology

Background:

  • Progressive multifocal leukoencephalopathy (PML) is a fatal brain disease caused by JC virus (JCV) replication.
  • Immunodeficient patients are particularly susceptible to PML, and effective antiviral treatments are currently lacking.

Purpose of the Study:

  • To characterize the antiviral activity of CMX001 against JCV replication in human brain progenitor-derived astrocytes (PDA) and COS-7 cells.
  • To evaluate the efficacy and toxicity of CMX001 in vitro.

Main Methods:

  • JCV replication was assessed using PCR and immunofluorescence assays.
  • Host cell toxicity was determined by WST-1 and BrdU incorporation assays.
  • Antiviral efficacy was quantified by calculating EC50, CC50, and SI50 values.

Main Results:

  • CMX001 demonstrated a dose-dependent reduction in JCV loads and infectivity in PDA.
  • CMX001 exhibited potent antiviral activity with low toxicity in PDA (SI50 = 33.3, SI90 = 256.1).
  • JCV replication was inhibited by CMX001 at concentrations achievable through oral administration.

Conclusions:

  • CMX001 is a potent inhibitor of JCV replication in vitro.
  • CMX001 shows a favorable selectivity index, suggesting therapeutic potential for PML treatment.
  • Further clinical studies are warranted to evaluate CMX001's efficacy and safety in patients.

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