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Umumararungu T, Nyandwi JB, Katandula J, Twizeyimana E, Claude Tomani J, Gahamanyi N, Ishimwe N, Olawode EO, Habarurema G, Mpenda M, Uyisenga JP, Saeed SI. Current status of the small molecule anti-HIV drugs in the pipeline or recently approved. Bioorg Med Chem 2024; 111:117860. [PMID: 39094527 DOI: 10.1016/j.bmc.2024.117860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 07/24/2024] [Accepted: 07/25/2024] [Indexed: 08/04/2024]
Abstract
Human Immunodeficiency Virus (HIV) is the causative agent of Acquired Immunodeficiency Syndrome (AIDS) with high morbidity and mortality rates. Treatment of AIDS/HIV is being complicated by increasing resistance to currently used antiretroviral (ARV) drugs, mainly in low- and middle-income countries (LMICs) due to drug misuse, poor drug supply and poor treatment monitoring. However, progress has been made in the development of new ARV drugs, targeting different HIV components (Fig. 1). This review aims at presenting and discussing the progress made towards the discovery of new ARVs that are at different stages of clinical trials as of July 2024. For each compound, the mechanism of action, target biomolecule, genes associated with resistance, efficacy and safety, class, and phase of clinical trial are discussed. These compounds include analogues of nucleoside reverse transcriptase inhibitors (NRTIs) - islatravir and censavudine; non-nucleoside reverse transcriptase inhibitors (NNRTIs) - Rilpivirine, elsulfavirine and doravirine; integrase inhibitors namely cabotegravir and dolutegravir and chemokine coreceptors 5 and 2 (CC5/CCR2) antagonists for example cenicriviroc. Also, fostemsavir is being developed as an attachment inhibitor while lenacapavir, VH4004280 and VH4011499 are capsid inhibitors. Others are maturation inhibitors such as GSK-254, GSK3532795, GSK3739937, GSK2838232, and other compounds labelled as miscellaneous (do not belong to the classical groups of anti-HIV drugs or to the newer classes) such as obefazimod and BIT225. There is a considerable progress in the development of new anti-HIV drugs and the effort will continue since HIV infections has no cure or vaccine till now. Efforts are needed to reduce the toxicity of available drugs or discover new drugs with new classes which can delay the development of resistance.
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Affiliation(s)
- Théoneste Umumararungu
- Department of Industrial Pharmacy, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Rwanda.
| | - Jean Baptiste Nyandwi
- Department of Pharmacology and Toxicology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Rwanda; East African Community Regional Centre of Excellence for Vaccines, Immunization and Health Supply Chain Management, Kigali, Rwanda
| | - Jonathan Katandula
- Department of Pharmacology and Toxicology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Rwanda
| | - Eric Twizeyimana
- Department of Physiology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Rwanda
| | - Jean Claude Tomani
- Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Rwanda
| | - Noël Gahamanyi
- Department of Biology, School of Science, College of Science and Technology, University of Rwanda, Rwanda
| | - Nestor Ishimwe
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Emmanuel Oladayo Olawode
- Department of Pharmaceutical Sciences, College of Pharmacy, Larkin University, 18301 N Miami Ave #1, Miami, FL 33169, USA
| | - Gratien Habarurema
- Department of Chemistry, School of Science, College of Science and Technology, University of Rwanda, Rwanda
| | - Matabishi Mpenda
- Department of Pharmacology and Toxicology, School of Medicine and Pharmacy, College of Medicine and Health Sciences, University of Rwanda, Rwanda
| | - Jeanne Primitive Uyisenga
- Department of Biology, School of Science, College of Science and Technology, University of Rwanda, Rwanda
| | - Shamsaldeen Ibrahim Saeed
- Faculty of Veterinary Science, University of Nyala, P.O. Box: 155, Nyala, Sudan; Nanotechnology in Veterinary Medicine (NanoVet) Research Group, Faculty of Veterinary Medicine, University Malaysia Kelantan, Kelantan 16100, Pengkalan Chepa, Malaysia
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Azzman N, Gill MSA, Hassan SS, Christ F, Debyser Z, Mohamed WAS, Ahemad N. Pharmacological advances in anti-retroviral therapy for human immunodeficiency virus-1 infection: A comprehensive review. Rev Med Virol 2024; 34:e2529. [PMID: 38520650 DOI: 10.1002/rmv.2529] [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: 11/13/2023] [Revised: 01/23/2024] [Accepted: 03/09/2024] [Indexed: 03/25/2024]
Abstract
The discovery of anti-retroviral (ARV) drugs over the past 36 years has introduced various classes, including nucleoside/nucleotide reverse transcriptase inhibitors, non-nucleoside reverse transcriptase inhibitors, protease inhibitor, fusion, and integrase strand transfer inhibitors inhibitors. The introduction of combined highly active anti-retroviral therapies in 1996 was later proven to combat further ARV drug resistance along with enhancing human immunodeficiency virus (HIV) suppression. As though the development of ARV therapies was continuously expanding, the variation of action caused by ARV drugs, along with its current updates, was not comprehensively discussed, particularly for HIV-1 infection. Thus, a range of HIV-1 ARV medications is covered in this review, including new developments in ARV therapy based on the drug's mechanism of action, the challenges related to HIV-1, and the need for combination therapy. Optimistically, this article will consolidate the overall updates of HIV-1 ARV treatments and conclude the significance of HIV-1-related pharmacotherapy research to combat the global threat of HIV infection.
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Affiliation(s)
- Nursyuhada Azzman
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
- Faculty of Pharmacy, Universiti Teknologi MARA, Cawangan Pulau Pinang Kampus Bertam, Permatang Pauh, Pulau Pinang, Malaysia
| | - Muhammad Shoaib Ali Gill
- Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Sharifah Syed Hassan
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Frauke Christ
- Laboratory for Molecular Virology and Gene Therapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Zeger Debyser
- Laboratory for Molecular Virology and Gene Therapy, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium
| | - Wan Ahmad Syazani Mohamed
- Nutrition Unit, Nutrition, Metabolism and Cardiovascular Research Centre (NMCRC), Level 3, Block C, Institute for Medical Research (IMR), National Institutes of Health (NIH) Complex, Ministry of Health Malaysia (MOH), Shah Alam, Selangor, Malaysia
| | - Nafees Ahemad
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
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Volcic M, Wiesmüller L, Kirchhoff F. Small but Highly Versatile: The Viral Accessory Protein Vpu. Annu Rev Virol 2023; 10:243-259. [PMID: 37406340 DOI: 10.1146/annurev-virology-111821-100816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
Human and simian immunodeficiency viruses (HIVs and SIVs, respectively) encode several small proteins (Vif, Vpr, Nef, Vpu, and Vpx) that are called accessory because they are not generally required for viral replication in cell culture. However, they play complex and important roles for viral immune evasion and spread in vivo. Here, we discuss the diverse functions and the relevance of the viral protein U (Vpu) that is expressed from a bicistronic RNA during the late stage of the viral replication cycle and found only in HIV-1 and closely related SIVs. It is well established that Vpu counteracts the restriction factor tetherin, mediates degradation of the primary viral CD4 receptors, and inhibits activation of the transcription factor nuclear factor kappa B. Recent studies identified additional activities and provided new insights into the sophisticated mechanisms by which Vpu enhances and prolongs the release of fully infectious viral particles. In addition, it has been shown that Vpu prevents superinfection not only by degrading CD4 but also by modulating DNA repair mechanisms to promote degradation of nuclear viral complementary DNA in cells that are already productively infected.
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Affiliation(s)
- Meta Volcic
- Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany;
| | - Lisa Wiesmüller
- Division of Gynecological Oncology, Department of Obstetrics and Gynecology, Ulm University Medical Center, Ulm, Germany
| | - Frank Kirchhoff
- Institute of Molecular Virology, Ulm University Medical Center, Ulm, Germany;
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Ewart G, Bobardt M, Bentzen BH, Yan Y, Thomson A, Klumpp K, Becker S, Rosenkilde MM, Miller M, Gallay P. Post-infection treatment with the E protein inhibitor BIT225 reduces disease severity and increases survival of K18-hACE2 transgenic mice infected with a lethal dose of SARS-CoV-2. PLoS Pathog 2023; 19:e1011328. [PMID: 37549173 PMCID: PMC10434922 DOI: 10.1371/journal.ppat.1011328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 08/17/2023] [Accepted: 07/06/2023] [Indexed: 08/09/2023] Open
Abstract
The Coronavirus envelope (E) protein is a small structural protein with ion channel activity that plays an important role in virus assembly, budding, immunopathogenesis and disease severity. The viroporin E is also located in Golgi and ER membranes of infected cells and is associated with inflammasome activation and immune dysregulation. Here we evaluated in vitro antiviral activity, mechanism of action and in vivo efficacy of BIT225 for the treatment of SARS-CoV-2 infection. BIT225 showed broad-spectrum direct-acting antiviral activity against SARS-CoV-2 in Calu3 and Vero cells with similar potency across 6 different virus strains. BIT225 inhibited ion channel activity of E protein but did not inhibit endogenous currents or calcium-induced ion channel activity of TMEM16A in Xenopus oocytes. BIT225 administered by oral gavage for 12 days starting 12 hours before infection completely prevented body weight loss and mortality in SARS-CoV-2 infected K18 mice (100% survival, n = 12), while all vehicle-dosed animals reached a mortality endpoint by Day 9 across two studies (n = 12). When treatment started at 24 hours after infection, body weight loss, and mortality were also prevented (100% survival, n = 5), while 4 of 5 mice maintained and increased body weight and survived when treatment started 48 hours after infection. Treatment efficacy was dependent on BIT225 dose and was associated with significant reductions in lung viral load (3.5 log10), virus titer (4000 pfu/ml) and lung and serum cytokine levels. These results validate viroporin E as a viable antiviral target and support the clinical study of BIT225 for treatment and prophylaxis of SARS-CoV-2 infection.
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Affiliation(s)
- Gary Ewart
- Biotron Limited, North Ryde, New South Wales, Australia
| | - Michael Bobardt
- The Scripps Institute, Immunology and Microbiology, La Jolla, California, United States of America
| | - Bo Hjorth Bentzen
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | - Yannan Yan
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | | | - Klaus Klumpp
- Biotron Limited, North Ryde, New South Wales, Australia
| | | | - Mette M. Rosenkilde
- University of Copenhagen, Department of Biomedical Sciences, Copenhagen, Denmark
| | | | - Philippe Gallay
- The Scripps Institute, Immunology and Microbiology, La Jolla, California, United States of America
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Yap YJ, Wong PF, AbuBakar S, Sam SS, Shunmugarajoo A, Soh YH, Misbah S, Ab Rahman AK. The clinical utility of CD163 in viral diseases. Clin Chim Acta 2023; 541:117243. [PMID: 36740088 DOI: 10.1016/j.cca.2023.117243] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023]
Abstract
Macrophage activation and hypercytokinemia are notable presentations in certain viral infections leading to severe disease and poor prognosis. Viral infections can cause macrophage polarization into the pro-inflammatory M1 or anti-inflammatory M2 phenotype. Activated M1 macrophages usually restrict viral replication whereas activated M2 macrophages suppress inflammation and promote tissue repair. In response to inflammatory stimuli, macrophages polarize to the M2 phenotype expressing hemoglobin scavenger CD163 surface receptor. The CD163 receptor is shed as the soluble form, sCD163, into plasma or tissue fluids. sCD163 causes detoxification of pro-oxidative hemoglobin which produces anti-inflammatory metabolites that promote the resolution of inflammation. Hence, increased CD163 expression in tissues and elevated circulatory levels of sCD163 have been associated with acute and chronic inflammatory diseases. CD163 and other macrophage activation markers have been commonly included in the investigation of disease pathogenesis and progression. This review provides an overview of the involvement of CD163 in viral diseases. The clinical utility of CD163 in viral disease diagnosis, progression, prognosis and treatment evaluation is discussed.
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Affiliation(s)
- Yi-Jing Yap
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Pooi-Fong Wong
- Department of Pharmacology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Sazaly AbuBakar
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, 50603 Kuala Lumpur, Malaysia; World Health Organization Collaborating Centre for Arbovirus Reference and Research (Dengue and Severe Dengue) MAA-12, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Sing-Sin Sam
- Tropical Infectious Diseases Research and Education Centre (TIDREC), Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Anusha Shunmugarajoo
- Medical Department, Tengku Ampuan Rahimah Hospital, 41200 Klang, Selangor, Malaysia
| | - Yih-Harng Soh
- Centers for Disease Control and Prevention Unit, Central Melaka District Health Office, Jalan Bukit Baru, 75150 Melaka, Malaysia
| | - Suzana Misbah
- Biological Security and Sustainability Research Group (BIOSES), Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Ahmad Kashfi Ab Rahman
- Department of Medicine (Infectious Disease Unit), Sultanah Nur Zahirah Hospital, Jalan Sultan Mahmud, 20400 Kuala Terengganu, Terengganu, Malaysia
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Ndashimye E, Reyes PS, Arts EJ. New antiretroviral inhibitors and HIV-1 drug resistance: more focus on 90% HIV-1 isolates? FEMS Microbiol Rev 2023; 47:fuac040. [PMID: 36130204 PMCID: PMC9841967 DOI: 10.1093/femsre/fuac040] [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: 07/25/2022] [Revised: 09/13/2022] [Accepted: 09/18/2022] [Indexed: 01/21/2023] Open
Abstract
Combined HIV antiretroviral therapy (cART) has been effective except if drug resistance emerges. As cART has been rolled out in low-income countries, drug resistance has emerged at higher rates than observed in high income countries due to factors including initial use of these less tolerated cART regimens, intermittent disruptions in drug supply, and insufficient treatment monitoring. These socioeconomic factors impacting drug resistance are compounded by viral mechanistic differences by divergent HIV-1 non-B subtypes compared to HIV-1 subtype B that largely infects the high-income countries (just 10% of 37 million infected). This review compares the inhibition and resistance of diverse HIV-1 subtypes and strains to the various approved drugs as well as novel inhibitors in clinical trials. Initial sequence variations and differences in replicative fitness between HIV-1 subtypes pushes strains through different fitness landscapes to escape from drug selective pressure. The discussions here provide insight to patient care givers and policy makers on how best to use currently approved ART options and reduce the emergence of drug resistance in ∼33 million individuals infected with HIV-1 subtype A, C, D, G, and recombinants forms. Unfortunately, over 98% of the literature on cART resistance relates to HIV-1 subtype B.
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Affiliation(s)
- Emmanuel Ndashimye
- Department of Microbiology and Immunology, Western University Schulich School of Medicine & Dentistry, Western University, N6A 3K7, London, Ontario, Canada
- Joint Clinical Research Centre, -Center for AIDS Research Laboratories, 256, Kampala, Uganda
| | - Paul S Reyes
- Department of Microbiology and Immunology, Western University Schulich School of Medicine & Dentistry, Western University, N6A 3K7, London, Ontario, Canada
| | - Eric J Arts
- Department of Microbiology and Immunology, Western University Schulich School of Medicine & Dentistry, Western University, N6A 3K7, London, Ontario, Canada
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Zhao C, Jiang Z, Tian L, Tang L, Zhou A, Dong T. Bioinformatics-Based Approach for Exploring the Immune Cell Infiltration Patterns in Alzheimer's Disease and Determining the Intervention Mechanism of Liuwei Dihuang Pill. Dose Response 2022; 20:15593258221115563. [PMID: 35898725 PMCID: PMC9310246 DOI: 10.1177/15593258221115563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 07/07/2022] [Indexed: 11/15/2022] Open
Abstract
Traditional Chinese medicine (TCM) compounds have recently garnered attention for the regulation of immune cell infiltration and the prevention and treatment of Alzheimer's disease (AD). The Liuwei Dihuang Pill (LDP) has potential in this regard; however, its specific molecular mechanism currently remains unclear. Therefore, we adopted a bioinformatics approach to investigate the infiltration patterns of different types of immune cells in AD and explored the molecular mechanism of LDP intervention, with the aim of providing a new basis for improving the clinical immunotherapy of AD patients. We found that M1 macrophages showed significantly different degrees of infiltration between the hippocampal tissue samples of AD patients and healthy individuals. Four immune intersection targets of LDP in the treatment of AD were identified; they were enriched in 206 biological functions and 30 signaling pathways. Quercetin had the best docking effect with the core immune target PRKCB. Our findings suggest that infiltrated immune cells may influence the course of AD and that LDP can regulate immune cell infiltration through multi-component, multi-target, and multi-pathway approaches, providing a new research direction regarding AD immunotherapy.
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Affiliation(s)
- Chenling Zhao
- The First Clinical Medical College, Anhui University of Chinese Medicine, Hefei, China
| | - Zhangsheng Jiang
- The First Clinical Medical College, Anhui University of Chinese Medicine, Hefei, China
| | - Liwei Tian
- The First Clinical Medical College, Anhui University of Chinese Medicine, Hefei, China
| | - Lulu Tang
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - An Zhou
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Ting Dong
- Department of Neurology, The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
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Robinson CA, Lyddon TD, Gil HM, Evans DT, Kuzmichev YV, Richard J, Finzi A, Welbourn S, Rasmussen L, Nebane NM, Gupta VV, Ananthan S, Cai Z, Wonderlich ER, Augelli-Szafran CE, Bostwick R, Ptak RG, Schader SM, Johnson MC. Novel Compound Inhibitors of HIV-1 NL4-3 Vpu. Viruses 2022; 14:v14040817. [PMID: 35458546 PMCID: PMC9024541 DOI: 10.3390/v14040817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/06/2022] [Accepted: 04/09/2022] [Indexed: 12/14/2022] Open
Abstract
HIV-1 Vpu targets the host cell proteins CD4 and BST-2/Tetherin for degradation, ultimately resulting in enhanced virus spread and host immune evasion. The discovery and characterization of small molecules that antagonize Vpu would further elucidate the contribution of Vpu to pathogenesis and lay the foundation for the study of a new class of novel HIV-1 therapeutics. To identify novel compounds that block Vpu activity, we have developed a cell-based ‘gain of function’ assay that produces a positive signal in response to Vpu inhibition. To develop this assay, we took advantage of the viral glycoprotein, GaLV Env. In the presence of Vpu, GaLV Env is not incorporated into viral particles, resulting in non-infectious virions. Vpu inhibition restores infectious particle production. Using this assay, a high throughput screen of >650,000 compounds was performed to identify inhibitors that block the biological activity of Vpu. From this screen, we identified several positive hits but focused on two compounds from one structural family, SRI-41897 and SRI-42371. We developed independent counter-screens for off target interactions of the compounds and found no off target interactions. Additionally, these compounds block Vpu-mediated modulation of CD4, BST-2/Tetherin and antibody dependent cell-mediated toxicity (ADCC). Unfortunately, both SRI-41897 and SRI-42371 were shown to be specific to the N-terminal region of NL4-3 Vpu and did not function against other, more clinically relevant, strains of Vpu; however, this assay may be slightly modified to include more significant Vpu strains in the future.
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Affiliation(s)
- Carolyn A. Robinson
- Department of Molecular Microbiology and Immunology, University of Missouri, School of Medicine and the Christopher S. Bond Life Sciences Center, Columbia, MO 65211, USA; (C.A.R.); (T.D.L.); (S.W.)
| | - Terri D. Lyddon
- Department of Molecular Microbiology and Immunology, University of Missouri, School of Medicine and the Christopher S. Bond Life Sciences Center, Columbia, MO 65211, USA; (C.A.R.); (T.D.L.); (S.W.)
| | - Hwi Min Gil
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (H.M.G.); (D.T.E.)
| | - David T. Evans
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA; (H.M.G.); (D.T.E.)
| | - Yury V. Kuzmichev
- Infectious Disease Research, Drug Development Division, Southern Research, Frederick, MD 21701, USA; (Y.V.K.); (Z.C.); (E.R.W.); (R.G.P.); (S.M.S.)
| | - Jonathan Richard
- Centre de Recherche du CHUM, Montréal, QC HX2 0A9, Canada; (J.R.); (A.F.)
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC HX2 0A9, Canada
| | - Andrés Finzi
- Centre de Recherche du CHUM, Montréal, QC HX2 0A9, Canada; (J.R.); (A.F.)
- Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC HX2 0A9, Canada
| | - Sarah Welbourn
- Department of Molecular Microbiology and Immunology, University of Missouri, School of Medicine and the Christopher S. Bond Life Sciences Center, Columbia, MO 65211, USA; (C.A.R.); (T.D.L.); (S.W.)
| | - Lynn Rasmussen
- High-Throughput Screening Center, Drug Discovery Division, Southern Research, Birmingham, AL 35205, USA; (L.R.); (N.M.N.); (R.B.)
| | - N. Miranda Nebane
- High-Throughput Screening Center, Drug Discovery Division, Southern Research, Birmingham, AL 35205, USA; (L.R.); (N.M.N.); (R.B.)
| | - Vandana V. Gupta
- Department of Chemistry, Drug Discovery Division, Southern Research, Birmingham, AL 35205, USA; (V.V.G.); (S.A.); (C.E.A.-S.)
| | - Sam Ananthan
- Department of Chemistry, Drug Discovery Division, Southern Research, Birmingham, AL 35205, USA; (V.V.G.); (S.A.); (C.E.A.-S.)
| | - Zhaohui Cai
- Infectious Disease Research, Drug Development Division, Southern Research, Frederick, MD 21701, USA; (Y.V.K.); (Z.C.); (E.R.W.); (R.G.P.); (S.M.S.)
| | - Elizabeth R. Wonderlich
- Infectious Disease Research, Drug Development Division, Southern Research, Frederick, MD 21701, USA; (Y.V.K.); (Z.C.); (E.R.W.); (R.G.P.); (S.M.S.)
| | - Corinne E. Augelli-Szafran
- Department of Chemistry, Drug Discovery Division, Southern Research, Birmingham, AL 35205, USA; (V.V.G.); (S.A.); (C.E.A.-S.)
| | - Robert Bostwick
- High-Throughput Screening Center, Drug Discovery Division, Southern Research, Birmingham, AL 35205, USA; (L.R.); (N.M.N.); (R.B.)
| | - Roger G. Ptak
- Infectious Disease Research, Drug Development Division, Southern Research, Frederick, MD 21701, USA; (Y.V.K.); (Z.C.); (E.R.W.); (R.G.P.); (S.M.S.)
| | - Susan M. Schader
- Infectious Disease Research, Drug Development Division, Southern Research, Frederick, MD 21701, USA; (Y.V.K.); (Z.C.); (E.R.W.); (R.G.P.); (S.M.S.)
| | - Marc C. Johnson
- Department of Molecular Microbiology and Immunology, University of Missouri, School of Medicine and the Christopher S. Bond Life Sciences Center, Columbia, MO 65211, USA; (C.A.R.); (T.D.L.); (S.W.)
- Correspondence:
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