Abstract
Background: Developed as an antiviral drug in the 1960s and 1970s, the thymidine analogue 2′-deoxy-2′-fluoro-5-methyl-1-β-D-arabinofuranosyluracil (FMAU) was translated to clinical application for treatment of herpes simplex virus infection. In phase I clinical trial of FMAU; however, patients experienced neurotoxicity at the pharmacological dose, and FMAU was withdrawn from the trial. More recently, FMAU has been developed as a tracer for positron emission tomography (PET) imaging in early detection of cancer through its binding to human thymidine kinase, which is upregulated in cancer cells. FMAU radiolabeled with 11C or 18F has been examined for PET imaging of tumor cell proliferation and DNA synthesis. Although many reports have been partially published on FMAU, systematic reviews outlining the historic development and imaging probe are lacking. This review is focused on the identification of kinases, the chemistry of FAMU and its application in cancer diagnosis and therapy assessment.
Objective: The aim of this study was to review the historic development of FMAU, from its synthetic development and antiviral activity studies to its radiolabeling and evaluate it as a PET imaging probe for the early detection of cancer and assessment of treatment response, including published reports on the clinical utility of 18F-FMAU.
Conclusion: While FMAU was not successful as an antiviral agent, 18F-FMAU is a suitable radiotracer for early detection of cancer and assessment of response to therapy by PET. The process of clinical grade 18F-FMAU production requires further improvement. 18F-FMAU has high potential for clinical application, but further extensive studies are needed to establish this tracer in the diagnosis of various cancers and assessment of their response to therapy.
Keywords: Antiviral agent, PET, C-11, F-18, nucleoside, molecular imaging, DNA synthesis.
Current Medicinal Chemistry
Title:Journey of 2′-deoxy-2′-fluoro-5-methyl-1-β-D-arabinofuranosyluracil (FMAU): from Antiviral Drug to PET Imaging Agent
Volume: 25 Issue: 16
Author(s): Mian M. Alauddin*
Affiliation:
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX,United States
Keywords: Antiviral agent, PET, C-11, F-18, nucleoside, molecular imaging, DNA synthesis.
Abstract: Background: Developed as an antiviral drug in the 1960s and 1970s, the thymidine analogue 2′-deoxy-2′-fluoro-5-methyl-1-β-D-arabinofuranosyluracil (FMAU) was translated to clinical application for treatment of herpes simplex virus infection. In phase I clinical trial of FMAU; however, patients experienced neurotoxicity at the pharmacological dose, and FMAU was withdrawn from the trial. More recently, FMAU has been developed as a tracer for positron emission tomography (PET) imaging in early detection of cancer through its binding to human thymidine kinase, which is upregulated in cancer cells. FMAU radiolabeled with 11C or 18F has been examined for PET imaging of tumor cell proliferation and DNA synthesis. Although many reports have been partially published on FMAU, systematic reviews outlining the historic development and imaging probe are lacking. This review is focused on the identification of kinases, the chemistry of FAMU and its application in cancer diagnosis and therapy assessment.
Objective: The aim of this study was to review the historic development of FMAU, from its synthetic development and antiviral activity studies to its radiolabeling and evaluate it as a PET imaging probe for the early detection of cancer and assessment of treatment response, including published reports on the clinical utility of 18F-FMAU.
Conclusion: While FMAU was not successful as an antiviral agent, 18F-FMAU is a suitable radiotracer for early detection of cancer and assessment of response to therapy by PET. The process of clinical grade 18F-FMAU production requires further improvement. 18F-FMAU has high potential for clinical application, but further extensive studies are needed to establish this tracer in the diagnosis of various cancers and assessment of their response to therapy.
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Cite this article as:
Alauddin M. Mian *, Journey of 2′-deoxy-2′-fluoro-5-methyl-1-β-D-arabinofuranosyluracil (FMAU): from Antiviral Drug to PET Imaging Agent, Current Medicinal Chemistry 2018; 25 (16) . https://dx.doi.org/10.2174/0929867325666171129125217
DOI https://dx.doi.org/10.2174/0929867325666171129125217 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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