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Krasnov VP, Andronova VL, Belyavsky AV, Borisevich SS, Galegov GA, Kandarakov OF, Gruzdev DA, Vozdvizhenskaya OA, Levit GL. Large Subunit of the Human Herpes Simplex Virus Terminase as a Promising Target in Design of Anti-Herpesvirus Agents. Molecules 2023; 28:7375. [PMID: 37959793 PMCID: PMC10649544 DOI: 10.3390/molecules28217375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/19/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Herpes simplex virus type 1 (HSV-1) is an extremely widespread pathogen characterized by recurrent infections. HSV-1 most commonly causes painful blisters or sores around the mouth or on the genitals, but it can also cause keratitis or, rarely, encephalitis. First-line and second-line antiviral drugs used to treat HSV infections, acyclovir and related compounds, as well as foscarnet and cidofovir, selectively inhibit herpesvirus DNA polymerase (DNA-pol). It has been previously found that (S)-4-[6-(purin-6-yl)aminohexanoyl]-7,8-difluoro-3,4-dihydro-3-methyl-2H-[1,4]benzoxazine (compound 1) exhibits selective anti-herpesvirus activity against HSV-1 in cell culture, including acyclovir-resistant mutants, so we consider it as a lead compound. In this work, the selection of HSV-1 clones resistant to the lead compound was carried out. High-throughput sequencing of resistant clones and reference HSV-1/L2 parent strain was performed to identify the genetic determinants of the virus's resistance to the lead compound. We identified a candidate mutation presumably associated with resistance to the virus, namely the T321I mutation in the UL15 gene encoding the large terminase subunit. Molecular modeling was used to evaluate the affinity and dynamics of the lead compound binding to the putative terminase binding site. The results obtained suggest that the lead compound, by binding to pUL15, affects the terminase complex. pUL15, which is directly involved in the processing and packaging of viral DNA, is one of the crucial components of the HSV terminase complex. The loss of its functional activity leads to disruption of the formation of mature virions, so it represents a promising drug target. The discovery of anti-herpesvirus agents that affect biotargets other than DNA polymerase will expand our possibilities of targeting HSV infections, including those resistant to baseline drugs.
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Affiliation(s)
- Victor P. Krasnov
- Postovsky Institute of Organic Synthesis, Russian Academy of Sciences (Ural Branch), Ekaterinburg 620108, Russia; (D.A.G.); (O.A.V.); (G.L.L.)
| | - Valeriya L. Andronova
- Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow 123098, Russia; (V.L.A.); (G.A.G.)
| | - Alexander V. Belyavsky
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia; (A.V.B.); (O.F.K.)
| | | | - George A. Galegov
- Gamaleya National Research Center for Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow 123098, Russia; (V.L.A.); (G.A.G.)
| | - Oleg F. Kandarakov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia; (A.V.B.); (O.F.K.)
| | - Dmitry A. Gruzdev
- Postovsky Institute of Organic Synthesis, Russian Academy of Sciences (Ural Branch), Ekaterinburg 620108, Russia; (D.A.G.); (O.A.V.); (G.L.L.)
| | - Olga A. Vozdvizhenskaya
- Postovsky Institute of Organic Synthesis, Russian Academy of Sciences (Ural Branch), Ekaterinburg 620108, Russia; (D.A.G.); (O.A.V.); (G.L.L.)
| | - Galina L. Levit
- Postovsky Institute of Organic Synthesis, Russian Academy of Sciences (Ural Branch), Ekaterinburg 620108, Russia; (D.A.G.); (O.A.V.); (G.L.L.)
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Wang J, Shahed-Ai-Mahmud M, Chen A, Li K, Tan H, Joyce R. An Overview of Antivirals against Monkeypox Virus and Other Orthopoxviruses. J Med Chem 2023; 66:4468-4490. [PMID: 36961984 DOI: 10.1021/acs.jmedchem.3c00069] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
Abstract
The current monkeypox outbreaks during the COVID-19 pandemic have reignited interest in orthopoxvirus antivirals. Monkeypox belongs to the Orthopoxvirus genus of the Poxviridae family, which also includes the variola virus, vaccinia virus, and cowpox virus. Two orally bioavailable drugs, tecovirimat and brincidofovir, have been approved for treating smallpox infections. Given their human safety profiles and in vivo antiviral efficacy in animal models, both drugs have also been recommended to treat monkeypox infection. To facilitate the development of additional orthopoxvirus antivirals, we summarize the antiviral activity, mechanism of action, and mechanism of resistance of orthopoxvirus antivirals. This perspective covers both direct-acting and host-targeting antivirals with an emphasis on drug candidates showing in vivo antiviral efficacy in animal models. We hope to speed the orthopoxvirus antiviral drug discovery by providing medicinal chemists with insights into prioritizing proper drug targets and hits for further development.
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Affiliation(s)
- Jun Wang
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Md Shahed-Ai-Mahmud
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Angelo Chen
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Kan Li
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Haozhou Tan
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Ryan Joyce
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, the State University of New Jersey, Piscataway, New Jersey 08854, United States
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Valantin MA, Royston L, Hentzien M, Jary A, Makinson A, Veyri M, Ronot-Bregigeon S, Isnard S, Palich R, Routy JP. Therapeutic Perspectives in the Systemic Treatment of Kaposi’s Sarcoma. Cancers (Basel) 2022; 14:cancers14030484. [PMID: 35158752 PMCID: PMC8833559 DOI: 10.3390/cancers14030484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/07/2022] [Accepted: 01/14/2022] [Indexed: 11/28/2022] Open
Abstract
Simple Summary Alternative systemic treatments are needed for patients who develop chemotherapy-refractory KS. Anti-angiogenic therapies constitute interesting therapeutic targets in this context, due to the central role of angiogenesis in KS pathogenesis, and could represent attractive alternatives. Immune checkpoints blockade could also be an interesting therapeutic approach in order to restore anti-HHV-8 immunity and tumor control. Abstract In patients with Kaposi’s sarcoma (KS), the therapeutic goal is to achieve a durable remission in the size and number of skin and visceral lesions. Although most patients show tumor regression in response to standard systemic chemotherapy regimens, alternative systemic treatments are needed for patients who develop refractory KS. Anti-angiogenic therapies represent attractive therapeutic targets in this context, due to the central role of angiogenesis in KS pathogenesis. Pomalidomide, which exhibits such anti-angiogenic activity through inhibition of VEGF, currently constitutes the most promising agent of this class and has been recently approved by the FDA. In addition, immune checkpoint blockade also represents an interesting alternative therapeutic approach through the restoration of immunity against HHV-8, the causative agent of KS, and improvement of tumor control. Although small series of cases treated successfully with these drugs have been reported, there is no marketing approval for anti-immune checkpoint antibodies for KS to date. In the present review, we will discuss potential therapeutic options for patients with recurrent or refractory KS, including systemic chemotherapies, immune checkpoint inhibitors, anti-herpesvirus agents, and anti-angiogenic drugs. Well-conducted clinical trials in this population are urgently needed to correctly address the efficacy of targeted agents and immunomodulators, while monitoring for adverse effects.
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Affiliation(s)
- Marc-Antoine Valantin
- Infectious Diseases Department, Pitié-Salpêtrière Hospital, AP-HP, Pierre Louis Epidemiology and Public Health Institute (iPLESP), INSERM U1136, Sorbonne University, 75013 Paris, France;
- Correspondence: (M.-A.V.); (L.R.); Tel.: +33-142-160-144 (M.-A.V.); +15-14-934-1934 (ext. 76487) (L.R.); Fax: +33-142-1601 (M.-A.V.)
| | - Léna Royston
- Infectious Diseases and Immunity in Global Health Program & Chronic Viral Illness Service, McGill University Health Centre, Montréal, QC H4A3J1, Canada; (S.I.); (J.-P.R.)
- Division of Infectious Diseases, Geneva University Hospitals, 1205 Geneva, Switzerland
- Correspondence: (M.-A.V.); (L.R.); Tel.: +33-142-160-144 (M.-A.V.); +15-14-934-1934 (ext. 76487) (L.R.); Fax: +33-142-1601 (M.-A.V.)
| | - Maxime Hentzien
- Service de Médecine Interne, Maladies Infectieuses, Immunologie Clinique, CHU Robert Debré, 51090 Reims, France;
| | - Aude Jary
- Service de Virologie, Pitié-Salpêtrière Hospital, AP-HP, Pierre Louis Epidemiology and Public Health Institute (iPLESP), INSERM U1136, Sorbonne University, 75013 Paris, France;
| | - Alain Makinson
- Infectious Diseases Department, INSERM U1175, University Hospital of Montpellier, 34000 Montpellier, France;
| | - Marianne Veyri
- Service d’Oncologie Médicale, Hôpitaux Universitaires Pitié Salpêtrière-Charles Foix, AP-HP, Pierre Louis Epidemiology and Public Health Institute (iPLESP), INSERM, Sorbonne University, 75013 Paris, France;
| | - Sylvie Ronot-Bregigeon
- Service d’Immuno-Hématologie Clinique, Hôpital Sainte-Marguerite, Aix Marseille Université, 13009 Marseille, France;
| | - Stéphane Isnard
- Infectious Diseases and Immunity in Global Health Program & Chronic Viral Illness Service, McGill University Health Centre, Montréal, QC H4A3J1, Canada; (S.I.); (J.-P.R.)
| | - Romain Palich
- Infectious Diseases Department, Pitié-Salpêtrière Hospital, AP-HP, Pierre Louis Epidemiology and Public Health Institute (iPLESP), INSERM U1136, Sorbonne University, 75013 Paris, France;
| | - Jean-Pierre Routy
- Infectious Diseases and Immunity in Global Health Program & Chronic Viral Illness Service, McGill University Health Centre, Montréal, QC H4A3J1, Canada; (S.I.); (J.-P.R.)
- Division of Hematology, McGill University Health Centre, Montréal, QC H4A3J1, Canada
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Naimo E, Zischke J, Schulz TF. Recent Advances in Developing Treatments of Kaposi's Sarcoma Herpesvirus-Related Diseases. Viruses 2021; 13:1797. [PMID: 34578378 PMCID: PMC8473310 DOI: 10.3390/v13091797] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 12/27/2022] Open
Abstract
Kaposi-sarcoma-associated herpesvirus (KSHV) or human herpesvirus 8 (HHV-8) is the causative agent of several malignancies, including Kaposi's sarcoma (KS), primary effusion lymphoma (PEL), and multicentric Castleman's disease (MCD). Active KSHV replication has also been associated with a pathological condition called KSHV inflammatory cytokine syndrome (KICS), and KSHV may play a role in rare cases of post-transplant polyclonal lymphoproliferative disorders. Several commonly used herpesviral DNA polymerase inhibitors are active against KSHV in tissue culture. Unfortunately, they are not always efficacious against KSHV-induced diseases. To improve the outcome for the patients, new therapeutics need to be developed, including treatment strategies that target either viral proteins or cellular pathways involved in tumor growth and/or supporting the viral life cycle. In this review, we summarize the most commonly established treatments against KSHV-related diseases and review recent developments and promising new compounds that are currently under investigation or on the way to clinical use.
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Affiliation(s)
- Eleonora Naimo
- Institute of Virology, Hannover Medical School, 30625 Hannover, Germany; (E.N.); (J.Z.)
- German Centre for Infection Research, Hannover-Braunschweig Site, 38023 Braunschweig, Germany
| | - Jasmin Zischke
- Institute of Virology, Hannover Medical School, 30625 Hannover, Germany; (E.N.); (J.Z.)
- German Centre for Infection Research, Hannover-Braunschweig Site, 38023 Braunschweig, Germany
| | - Thomas F. Schulz
- Institute of Virology, Hannover Medical School, 30625 Hannover, Germany; (E.N.); (J.Z.)
- German Centre for Infection Research, Hannover-Braunschweig Site, 38023 Braunschweig, Germany
- Cluster of Excellence 2155 RESIST, Institute of Virology, Hannover Medical School, 30625 Hannover, Germany
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Le TM, Szilasi T, Volford B, Szekeres A, Fülöp F, Szakonyi Z. Stereoselective Synthesis and Investigation of Isopulegol-Based Chiral Ligands. Int J Mol Sci 2019; 20:ijms20164050. [PMID: 31430981 PMCID: PMC6719113 DOI: 10.3390/ijms20164050] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 08/05/2019] [Accepted: 08/15/2019] [Indexed: 01/18/2023] Open
Abstract
A library of isopulegol-based bi-, tri- and tetrafunctional chiral ligands has been developed from commercially available (−)-isopulegol and applied as chiral catalysts in the addition of diethylzinc to benzaldehyde. Michael addition of primary amines towards α-methylene-γ-butyrolactone, followed by reduction, was accomplished to provide aminodiols in highly stereoselective transformations. Stereoselective epoxidation of (+)-neoisopulegol, derived from natural (−)-isopulegol, and subsequent oxirane ring opening with primary amines afforded aminodiols. The regioselective ring closure of N-substituted aminodiols with formaldehyde was also investigated. Hydroxylation of (+)-neoisopulegol resulted in diol, which was then transformed into aminotriols by aminolysis of its epoxides. Dihydroxylation of (+)-neoisopulegol or derivatives with OsO4/NMO gave neoisopulegol-based di-, tri- and tetraols in highly stereoselective reactions. The antimicrobial activity of aminodiol and aminotriol derivatives as well as di-, tri- and tetraols was also explored. In addition, structure–activity relationships were examined by assessing substituent effects on the aminodiol and aminotriol systems.
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Affiliation(s)
- Tam Minh Le
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary
- Stereochemistry Research Group of the Hungarian Academy of Sciences, H-6720 Szeged, Eötvös utca 6, Hungary
| | - Tamás Szilasi
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary
| | - Bettina Volford
- Department of Microbiology, University of Szeged, 6726 Szeged, Közép fasor 52, Hungary
| | - András Szekeres
- Department of Microbiology, University of Szeged, 6726 Szeged, Közép fasor 52, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary
- Stereochemistry Research Group of the Hungarian Academy of Sciences, H-6720 Szeged, Eötvös utca 6, Hungary
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Interdisciplinary excellent center, H-6720 Szeged, Eötvös utca 6, Hungary.
- Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Eötvös utca 6, Hungary.
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Tashenov Y, Daniels M, Robeyns K, Van Meervelt L, Dehaen W, Suleimen YM, Szakonyi Z. Stereoselective Syntheses and Application of Chiral Bi- and Tridentate Ligands Derived from (+)-Sabinol. Molecules 2018; 23:molecules23040771. [PMID: 29584708 PMCID: PMC6017647 DOI: 10.3390/molecules23040771] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/16/2022] Open
Abstract
A library of bidentate diols, as well as tridentate triols and aminodiols, derived from (+)-sabinol, was synthesized in a stereoselective manner. Sabinol was transformed into allylic trichloroacetamide via Overman rearrangement of the corresponding trichloroacetimidate. After changing the protecting group to Boc, the enamine was subjected to stereospecific dihydroxylation with OsO4/NMO, resulting in the (1R,2R,3R,5R)-aminodiol diastereomer. The obtained primary aminodiol was transformed to a secondary analogue. The ring closure of the N-benzyl-substituted aminodiol with formaldehyde was investigated and regioselective formation of the spiro-oxazolidine ring was observed. Hydroboration or dihydroxylation of sabinol or its benzyl ether with OsO4/NMO resulted in the formation of sabinane-based diols and triols following a highly stereospecific reaction. Treatment of sabinol with m-CPBA afforded O-benzoyl triol as a diastereoisomer of the directly dihydroxylated product, instead of the expected epoxy alcohol. The resulting aminodiols, diol, and triols were applied as chiral catalysts in the reaction of diethylzinc and benzaldehyde from moderate to good selectivity.
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Affiliation(s)
- Yerbolat Tashenov
- Institute of Applied Chemistry, Chemistry Department of L.N. Gumilyov Eurasian National University, Munaitpassov st., 5, 010008 Astana, Kazakhstan.
| | - Mathias Daniels
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Koen Robeyns
- IMCN, Molecules Solids and Reactivity division (MOST), Université catholique de Louvain, Place Pasteur 1, B-1348 Louvain-la-Neuve, Belgium.
| | - Luc Van Meervelt
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Wim Dehaen
- KU Leuven, Department of Chemistry, Celestijnenlaan 200F, B-3001 Leuven, Belgium.
| | - Yerlan M Suleimen
- Institute of Applied Chemistry, Chemistry Department of L.N. Gumilyov Eurasian National University, Munaitpassov st., 5, 010008 Astana, Kazakhstan.
| | - Zsolt Szakonyi
- Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
- Interdisciplinary Centre of Natural Products, University of Szeged, H 6720 Szeged, Hungary.
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Coen N, Duraffour S, Snoeck R, Andrei G. KSHV targeted therapy: an update on inhibitors of viral lytic replication. Viruses 2014; 6:4731-59. [PMID: 25421895 PMCID: PMC4246246 DOI: 10.3390/v6114731] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 11/07/2014] [Accepted: 11/17/2014] [Indexed: 01/01/2023] Open
Abstract
Kaposi’s sarcoma-associated herpesvirus (KSHV) is the causative agent of Kaposi’s sarcoma, primary effusion lymphoma and multicentric Castleman’s disease. Since the discovery of KSHV 20 years ago, there is still no standard treatment and the management of virus-associated malignancies remains toxic and incompletely efficacious. As the majority of tumor cells are latently infected with KSHV, currently marketed antivirals that target the virus lytic cycle have shown inconsistent results in clinic. Nevertheless, lytic replication plays a major role in disease progression and virus dissemination. Case reports and retrospective studies have pointed out the benefit of antiviral therapy in the treatment and prevention of KSHV-associated diseases. As a consequence, potent and selective antivirals are needed. This review focuses on the anti-KSHV activity, mode of action and current status of antiviral drugs targeting KSHV lytic cycle. Among these drugs, different subclasses of viral DNA polymerase inhibitors and compounds that do not target the viral DNA polymerase are being discussed. We also cover molecules that target cellular kinases, as well as the potential of new drug targets and animal models for antiviral testing.
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Affiliation(s)
- Natacha Coen
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
| | - Sophie Duraffour
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
| | - Robert Snoeck
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
| | - Graciela Andrei
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium.
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Abstract
This review highlights ten "hot topics" in current antiviral research: (i) new nucleoside derivatives (i.e., PSI-352938) showing high potential as a direct antiviral against hepatitis C virus (HCV); (ii) cyclopropavir, which should be further pursued for treatment of human cytomegalovirus (HCMV) infections; (iii) North-methanocarbathymidine (N-MCT), with a N-locked conformation, showing promising activity against both α- and γ-herpesviruses; (iv) CMX001, an orally bioavailable prodrug of cidofovir with broad-spectrum activity against DNA viruses, including polyoma, adeno, herpes, and pox; (v) favipiravir, which is primarily pursued for the treatment of influenza virus infections, but also inhibits the replication of other RNA viruses, particularly (-)RNA viruses such as arena, bunya, and hanta; (vi) newly emerging antiarenaviral compounds which should be more effective (and less toxic) than the ubiquitously used ribavirin; (vii) antipicornavirus agents in clinical development (pleconaril, BTA-798, and V-073); (viii) natural products receiving increased attention as potential antiviral drugs; (ix) antivirals such as U0126 targeted at specific cellular kinase pathways [i.e., mitogen extracellular kinase (MEK)], showing activity against influenza and other viruses; and (x) two structurally unrelated compounds (i.e., LJ-001 and dUY11) with broad-spectrum activity against virtually all enveloped RNA and DNA viruses.
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Affiliation(s)
- Erik De Clercq
- Rega Institute for Medical Research, KU Leuven, Minderbroedersstraat 10, B-3000, Leuven, Belgium.
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Bernstein DI, Bravo FJ, Clark JR, Earwood JD, Rahman A, Glazer R, Cardin RD. N-Methanocarbathymidine is more effective than acyclovir for treating neonatal herpes simplex virus infection in guinea pigs. Antiviral Res 2011; 92:386-8. [PMID: 21924293 DOI: 10.1016/j.antiviral.2011.08.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 08/22/2011] [Accepted: 08/23/2011] [Indexed: 11/25/2022]
Abstract
The outcome of neonatal herpes simplex (HSV) infection, even after therapy with high dose acyclovir (ACV), is not optimum. We therefore evaluated N-Methanocarbathymidine ((N)-MCT) using the guinea pig model of neonatal herpes. Treatment with ACV (60 mg/kg/day) was compared to doses of 1, 5, and 25 mg/kg/day of (N)-MCT initiated 1, 2, or 3 days postinoculation (dpi). Both ACV and (N)-MCT significantly improved survival, but only (N)-MCT significantly reduced the number of animals with symptoms when begun at 1 dpi. When therapy was begun at 2 dpi, only (N)-MCT (1, 5, or 25 mg/kg/day) significantly increased survival. In fact, (N)-MCT improved survival up to 3 dpi, the last time point evaluated. (N)-MCT was highly effective and superior to high dose ACV therapy for the treatment of neonatal herpes in the guinea pig model.
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Affiliation(s)
- David I Bernstein
- Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, United States.
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Gantt S, Casper C. Human herpesvirus 8-associated neoplasms: the roles of viral replication and antiviral treatment. Curr Opin Infect Dis 2011; 24:295-301. [PMID: 21666458 PMCID: PMC4059200 DOI: 10.1097/qco.0b013e3283486d04] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW In this review, we highlight the importance of human herpesvirus 8 (HHV-8) lytic replication and the potential for antiviral therapies to prevent or treat HHV-8-related neoplasms. RECENT FINDINGS Diseases caused by HHV-8 infection include Kaposi sarcoma, multicentric Castleman disease (MCD), and primary effusion lymphoma (PEL), which occur primarily in patients with HIV infection. Kaposi sarcoma is the most common AIDS-associated malignancy worldwide. MCD and PEL occur less commonly but, like Kaposi sarcoma, are associated with poor treatment outcomes. Like all herpesviruses, HHV-8 is capable of either latent or lytic infection of cells. Although HHV-8 infection of tumor cells is predominately latent, accumulating data point to the importance of both lytic phase viral gene products and production of infectious virus. Antiviral agents that target herpesvirus DNA synthesis, such as ganciclovir, inhibit HHV-8 lytic replication and can prevent Kaposi sarcoma. Several HIV protease inhibitors may interfere with tumor growth and angiogenesis, and one protease inhibitor, nelfinavir, directly inhibits HHV-8 replication in vitro. SUMMARY Controlled trials are indicated to determine the clinical utility of antiviral suppression of HHV-8 replication, and identify the optimal antiretroviral regimens, for the prevention and treatment of Kaposi sarcoma.
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Affiliation(s)
- Soren Gantt
- Department of Pediatrics, University of Washington, Seattle Children's Hospital, Seattle, WA 98101, USA.
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Gantt S, Carlsson J, Ikoma M, Gachelet E, Gray M, Geballe AP, Corey L, Casper C, Lagunoff M, Vieira J. The HIV protease inhibitor nelfinavir inhibits Kaposi's sarcoma-associated herpesvirus replication in vitro. Antimicrob Agents Chemother 2011; 55:2696-703. [PMID: 21402841 PMCID: PMC3101462 DOI: 10.1128/aac.01295-10] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Revised: 10/27/2010] [Accepted: 03/04/2011] [Indexed: 01/03/2023] Open
Abstract
Kaposi's sarcoma (KS) is the most common HIV-associated cancer worldwide and is associated with high levels of morbidity and mortality in some regions. Antiretroviral (ARV) combination regimens have had mixed results for KS progression and resolution. Anecdotal case reports suggest that protease inhibitors (PIs) may have effects against KS that are independent of their effect on HIV infection. As such, we evaluated whether PIs or other ARVs directly inhibit replication of Kaposi's sarcoma-associated herpesvirus (KSHV), the gammaherpesvirus that causes KS. Among a broad panel of ARVs tested, only the PI nelfinavir consistently displayed potent inhibitory activity against KSHV in vitro as demonstrated by an efficient quantitative assay for infectious KSHV using a recombinant virus, rKSHV.294, which expresses the secreted alkaline phosphatase. This inhibitory activity of nelfinavir against KSHV replication was confirmed using virus derived from a second primary effusion lymphoma cell line. Nelfinavir was similarly found to inhibit in vitro replication of an alphaherpesvirus (herpes simplex virus) and a betaherpesvirus (human cytomegalovirus). No activity was observed with nelfinavir against vaccinia virus or adenovirus. Nelfinavir may provide unique benefits for the prevention or treatment of HIV-associated KS and potentially other human herpesviruses by direct inhibition of replication.
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Affiliation(s)
- Soren Gantt
- Departments of Pediatrics
- Seattle Children's Hospital
| | | | | | | | | | | | - Lawrence Corey
- Laboratory Medicine
- Medicine
- Clinical Research
- Vaccine and Infectious Diseases
| | - Corey Casper
- Medicine
- Global Health
- Epidemiology, University of Washington
- Clinical Research
- Vaccine and Infectious Diseases
- Public Health Sciences Divisions, Fred Hutchinson Cancer Research Center, Seattle, Washington
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12
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Eoff RL, McGrath CE, Maddukuri L, Salamanca-Pinzón SG, Marquez VE, Marnett LJ, Guengerich FP, Egli M. Selective modulation of DNA polymerase activity by fixed-conformation nucleoside analogues. Angew Chem Int Ed Engl 2010; 49:7481-5. [PMID: 20814997 PMCID: PMC3011974 DOI: 10.1002/anie.201003168] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Robert L. Eoff
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
| | - Colleen E. McGrath
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
| | - Leena Maddukuri
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
| | - S. Giovanna Salamanca-Pinzón
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
| | - Victor E. Marquez
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA
| | - Lawrence J. Marnett
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
| | - F. Peter Guengerich
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
| | - Martin Egli
- Department of Biochemistry, Center in Molecular Toxicology, & Vanderbilt Institute of Chemical Biology, Vanderbilt University School of Medicine, Nashville, TN 37232-0146, USA
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13
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Eoff RL, McGrath CE, Maddukuri L, Salamanca-Pinzón SG, Marquez VE, Marnett LJ, Guengerich FP, Egli M. Selective Modulation of DNA Polymerase Activity by Fixed-Conformation Nucleoside Analogues. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Ludek OR, Marquez VE. A greener enantioselective synthesis of the antiviral agent North-methanocarbathymidine (N-MCT) from 2-deoxy-d-ribose. Tetrahedron 2009; 65:8461-8467. [PMID: 20625519 PMCID: PMC2900805 DOI: 10.1016/j.tet.2009.08.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
An enantioselective synthesis of suitably protected (1R,2S,4S,5S)-4-amino-1-(hydroxymethyl)bicyclo[3.1.0]hexan-2-ol, a key starting material for the synthesis of conformationally locked carbocyclic nucleosides, including the antiviral active North-methanocarba thymidine, is reported. Starting from 2-deoxyribose the target Boc-protected amine was prepared in 33% overall yield under condition that are ecologically friendlier than previous methods.
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Affiliation(s)
- Olaf R. Ludek
- Laboratory of Medicinal Chemistry, Center for Cancer Research, National Cancer Institute at Frederick, National Institutes of Health, Frederick, MD 21702, USA
| | - Victor E. Marquez
- Laboratory of Medicinal Chemistry, Center for Cancer Research, National Cancer Institute at Frederick, National Institutes of Health, Frederick, MD 21702, USA
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15
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Caselli E, Galvan M, Santoni F, Alvarez S, de Lera AR, Ivanova D, Gronemeyer H, Caruso A, Guidoboni M, Cassai E, Dolcetti R, Di Luca D. Retinoic Acid Analogues Inhibit Human Herpesvirus 8 Replication. Antivir Ther 2008. [DOI: 10.1177/135965350801300205] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background Retinoids have a pronounced antiviral effect against several viruses. In this study we aimed to investigate the effect of retinoids on human herpesvirus 8 (HHV-8). Methods A panel of retinoic acid compounds were tested for their antiviral activity against HHV-8 in human umbilical vascular endothelial cells (HUVECs) and in a human epithelial cell line. The presence, transcription and antigen expression of HHV-8 in infected cells – in the presence or absence of retinoic acid compounds – were evaluated by PCR, reverse transcriptase PCR and immunofluorescence assays; HHV-8 viral load was determined by real-time quantitative PCR. Angiogenesis induced by HHV-8 was also assessed using Cultrex® basement membrane extract. Results The compounds tested specifically inhibited viral promoters, during the early and late phases of infection in both cell systems tested, and resulted in up to 100fold reduction of viral titre and release of progeny virus. The inhibition of viral replication induced by retinoids in endothelial cells, the primary target of HHV-8-driven transformation in Kaposi's Sarcoma, prevented endothelial cells from developing spindle morphology and in vitro tube formation, characteristic changes associated with HHV-8 infection and transformation. Conclusions We show that retinoids inhibit HHV-8 replication and identify new retinoid compounds with a strong antiviral effect. Selective retinoids, particularly those with retinoic acid receptor agonist activity, may be good candidates for the development of antiviral drugs.
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Affiliation(s)
- Elisabetta Caselli
- Section of Microbiology, Department of Experimental and Diagnostic Medicine, University of Ferrara, Italy
| | - Monica Galvan
- Section of Microbiology, Department of Experimental and Diagnostic Medicine, University of Ferrara, Italy
| | - Fabio Santoni
- Section of Microbiology, Department of Experimental and Diagnostic Medicine, University of Ferrara, Italy
| | - Susana Alvarez
- Departamento de Química Orgànica, Universidade de Vigo, Spain
| | - Angel R de Lera
- Departamento de Química Orgànica, Universidade de Vigo, Spain
| | - Diana Ivanova
- Departamento de Química Orgànica, Universidade de Vigo, Spain
- Department of Cancer Biology, IGBMC, Strasbourg, France
| | | | - Arnaldo Caruso
- Section of Microbiology, Department of Experimental and Applied Medicine, University of Brescia, Italy
| | - Massimo Guidoboni
- Immunovirology and Biotherapy Unit, CRO – IRCCS, National Cancer Institute, Aviano, Italy
- Present address: Division of Medical Oncology and Immunotherapy, Department of Oncology, University Hospital of Siena, Istituto Toscano Tumori, Siena, Italy
| | - Enzo Cassai
- Section of Microbiology, Department of Experimental and Diagnostic Medicine, University of Ferrara, Italy
| | - Riccardo Dolcetti
- Immunovirology and Biotherapy Unit, CRO – IRCCS, National Cancer Institute, Aviano, Italy
| | - Dario Di Luca
- Section of Microbiology, Department of Experimental and Diagnostic Medicine, University of Ferrara, Italy
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16
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De Clercq E. Status Presens of Antiviral Drugs And Strategies: Part I: DNA Viruses and Retroviruses. ADVANCES IN ANTIVIRAL DRUG DESIGN 2007; 5:1-58. [PMID: 32288472 PMCID: PMC7146823 DOI: 10.1016/s1075-8593(06)05001-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
More than 40 compounds have been formally licensed for clinical use as antiviral drugs, and half of these are used for the treatment of HIV infections. The others have been approved for the therapy of herpesvirus (HSV, VZV, CMV), hepadnavirus (HBV), hepacivirus (HCV) and myxovirus (influenza, RSV) infections. New compounds are in clinical development or under preclinical evaluation, and, again, half of these are targeting HIV infections. Yet, quite a number of important viral pathogens (i.e. HPV, HCV, hemorrhagic fever viruses) remain in need of effective and/or improved antiviral therapies.
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17
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De Clercq E. Viruses and Viral Diseases. COMPREHENSIVE MEDICINAL CHEMISTRY II 2007. [PMCID: PMC7151824 DOI: 10.1016/b0-08-045044-x/00211-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
More than 40 compounds have been formally licensed for clinical use as antiviral drugs, and half of these are used for the treatment of human immunodeficiency virus (HIV) infections. The others have been approved for the therapy of herpesvirus (herpes simplex virus (HSV), varicella-zoster virus (VZV), cytomegalovirus (CMV)), hepadnavirus (hepatitis B virus (HBV)), hepacivirus (hepatitis C virus (HCV)), and myxovirus (influenza, respiratory synctural virus (RSV)) infections. New compounds are in clinical development or under preclinical evaluation, and, again, half of these target HIV infections. Yet, quite a number of important viral pathogens (i.e., human papilloma virus (HPV), HCV, hemorrhagic fever viruses) remain in need of effective and/or improved antiviral therapies.
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18
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Fujimuro M, Inoue H, Teishikata Y, Ishida Y, Yokosawa H. Apoptotic effect of ganciclovir on primary effusion lymphoma cells infected with Kaposi's sarcoma-associated herpesvirus. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2006; 25:635-45. [PMID: 16838851 DOI: 10.1080/15257770600686311] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
We evaluated the cytotoxic and apoptotic effects of two purine nucleoside analogues, acyclovir (ACV) and ganciclovir (GCV), on lymphoma cells stably harboring Kaposi's sarcoma-associated herpesvirus (KSHV). Colorimetric caspase assay, flow cytometry, and immunoblotting with antibodies against apoptosis-related molecules revealed that GCV has cytotoxic activity toward KSHV-infected primary effusion lymphoma cells, while ACV has weak or little activity. In addition to the GCV-induced cytotoxicity, apoptosis via caspase-7/8, cleavage of poly(ADP-ribose) polymerase, and accumulation of p53 and p21 were induced by GCV treatment. In contrast, neither ACV nor GCV have cytotoxicity- or apoptosis-inducing activities toward uninfected cells.
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Affiliation(s)
- Masahiro Fujimuro
- Department of Biochemistry, Graduate School of Pharmaceutical Sciences, Hokkaido University, Sapporo, Japan
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19
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Marquez VE, Hughes SH, Sei S, Agbaria R. The history of N-methanocarbathymidine: The investigation of a conformational concept leads to the discovery of a potent and selective nucleoside antiviral agent. Antiviral Res 2006; 71:268-75. [PMID: 16730077 DOI: 10.1016/j.antiviral.2006.04.012] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2006] [Revised: 04/11/2006] [Accepted: 04/13/2006] [Indexed: 10/24/2022]
Abstract
Conformationally locked (North)-methanocarbathymidine (N-MCT) and (South)-methanocarbathymidine (S-MCT) have been used to investigate the conformational preferences of kinases and polymerases. The herpes kinases show a distinct bias for S-MCT, while DNA polymerases almost exclusively incorporate the North 5'-triphosphate (N-MCT-TP). Only N-MCT demonstrated potent antiviral activity against herpes simplex viruses (HSV-1 and 2) and Kaposi's sarcoma-associated herpesvirus (KSHV). The activity of N-MCT depends on its metabolic transformation to N-MCT-TP by the herpes kinases (HSV-tk or KSHV-tk), which catalyze the mono and diphosphorylation steps; cellular kinases generate the triphosphate. N-MCT at a dose of 5.6 mg/kg was totally protective for mice inoculated intranasally with HSV-1. Tumor cells that are not responsive to antiviral therapy became sensitive to N-MCT if the cells expressed HSV-tk. N-MCT given twice daily (100 mg/kg) for 7 days completely inhibited the growth of MC38 tumors derived from cells that express HSV-tk in mice while exhibiting no effect on tumors derived from non-transduced cells. After i.p. administration, N-MCT was rapidly absorbed and distributed in all organs examined with slow penetration into brain and testes. N-MCT-TP was also a potent inhibitor of HIV replication in human osteosarcoma (HOS) cells expressing HSV-tk.
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Affiliation(s)
- Victor E Marquez
- Laboratory of Medicinal Chemistry, National Cancer Institute at Frederick, P.O. Box B, Building 539, Frederick, MD 21702, USA.
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Prichard MN, Keith KA, Quenelle DC, Kern ER. Activity and mechanism of action of N-methanocarbathymidine against herpesvirus and orthopoxvirus infections. Antimicrob Agents Chemother 2006; 50:1336-41. [PMID: 16569849 PMCID: PMC1426929 DOI: 10.1128/aac.50.4.1336-1341.2006] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
N-Methanocarbathymidine [(N)-MCT] is a conformationally locked nucleoside analog that is active against some herpesviruses and orthopoxviruses in vitro. The antiviral activity of this molecule is dependent on the type I thymidine kinase (TK) in herpes simplex virus and also appears to be dependent on the type II TK expressed by cowpox and vaccinia viruses, suggesting that it is a substrate for both of these divergent forms of the enzyme. The drug is also a good inhibitor of viral DNA synthesis in both viruses and is consistent with inhibition of the viral DNA polymerase once it is activated by the viral TK homologs. This mechanism of action explains the rather unusual spectrum of activity, which is limited to orthopoxviruses, alphaherpesviruses, and Epstein-Barr virus, since these viruses express molecules with TK activity that can phosphorylate and thus activate the drug. The compound is also effective in vivo and reduces the mortality of mice infected with orthopoxviruses, as well as those infected with herpes simplex virus type 1 when treatment is initiated 24 h after infection. These results indicate that (N)-MCT is active in vitro and in vivo, and its mechanism of action suggests that the molecule may be an effective therapeutic for orthopoxvirus and herpesvirus infections, thus warranting further development.
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Affiliation(s)
- Mark N Prichard
- Department of Pediatrics, University of Alabama School of Medicine, Birmingham, AL 35233, USA.
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