Article
Pharmacology & Pharmacy
Jordi Rodon, Jordana Munoz-Basagoiti, Daniel Perez-Zsolt, Marc Noguera-Julian, Roger Paredes, Lourdes Mateu, Carles Quinones, Carles Perez, Itziar Erkizia, Ignacio Blanco, Alfonso Valencia, Victor Guallar, Jorge Carrillo, Julia Blanco, Joaquim Segales, Bonaventura Clotet, Julia Vergara-Alert, Nuria Izquierdo-Useros
Summary: This study identified potential antiviral drugs for the treatment of COVID-19 by screening existing drugs approved for human use. Among the 72 antivirals tested, only 18% showed effective inhibition of viral replication, with Plitidepsin being the most promising candidate. Drug combinations showed no particular synergy, but did not reduce antiviral activity, potentially decreasing the emergence of resistant viruses.
FRONTIERS IN PHARMACOLOGY
(2021)
Article
Virology
Camilla Isgro, Anna Maria Sardanelli, Luigi Leonardo Palese
Summary: The outbreak of the coronavirus in 2019 led to a global pandemic caused by the SARS-CoV-2 virus. Despite advanced vaccine development, there are currently no effective antiviral drugs for treatment. Research indicates that the diuretic ethacrynic acid could be an effective inhibitor of the SARS-CoV-2 main protease, offering a potential therapeutic strategy against the virus.
Article
Chemistry, Medicinal
Rebekka Wamser, Szymon Pach, Christoph Arkona, Morris Baumgardt, Umer Bin Abdul Aziz, Andreas C. Hocke, Gerhard Wolber, Joerg Rademann
Summary: SARS coronavirus main proteases (3CL proteases) have been identified as potential drug targets for coronavirus treatment. The current inhibitors of these proteases have limitations, such as poor oral bioavailability and rapid degradation. In this study, covalent fragment inhibitors were investigated as alternative inhibitors. Reactive fragments were synthesized and their inhibitory potency was evaluated based on stability and kinetics. Carbonates were found to be more stable, but inactive in infected cells. Reversibly covalent fragments, particularly a pyridine-aldehyde fragment, showed promising inhibitory activity.
Article
Chemistry, Medicinal
Kai S. Yang, Xinyu R. Ma, Yuying Ma, Yugendar R. Alugubelli, Danielle A. Scott, Erol C. Vatansever, Aleksandra K. Drelich, Banumathi Sankaran, Zhi Z. Geng, Lauren R. Blankenship, Hannah E. Ward, Yan J. Sheng, Jason C. Hsu, Kaci C. Kratch, Baoyu Zhao, Hamed S. Hayatshahi, Jin Liu, Pingwei Li, Carol A. Fierke, Chien-Te K. Tseng, Shiqing Xu, Wenshe Ray Liu
Summary: This study developed a series of SARS-CoV-2 main protease inhibitors with high potency by forming reversible covalent bonds with the active site cysteine C145, showing potential as COVID-19 treatment options. The most potent compound, MPI3, demonstrated a Ki value of 8.3 nM. Inhibitor MPI5 and MPI8 completely prevented SARS-CoV-2-induced cytopathogenic effect in cells at low concentrations, surpassing some existing molecules under clinical investigation for COVID-19 treatment. Further exploration of chemical space is needed to develop SC2M(Pro) inhibitors with ultra-high antiviral potency.
Article
Medicine, Research & Experimental
Mahmudul Hasan, Md Sorwer Alam Parvez, Kazi Faizul Azim, Md Abdus Shukur Imran, Topu Raihan, Airin Gulshan, Samuel Muhit, Rubaiat Nazneen Akhand, Syed Sayeem Uddin Ahmed, Md Bashir Uddin
Summary: Drug repurposing and molecular docking were used to screen approved MPP inhibitors and their derivatives for potential COVID-19 treatment. Paritaprevir and its analog showed better binding affinity compared to other MPP inhibitors, indicating their potential effectiveness against SARS-CoV-2. The study also identified key surface hotspots in the MPP of the virus.
BIOMEDICINE & PHARMACOTHERAPY
(2021)
Article
Biochemistry & Molecular Biology
Seri Jo, Luca Signorile, Suwon Kim, Mi-Sun Kim, Oscar Huertas, Raul Insa, Nuria Reig, Dong Hae Shin
Summary: In this study, researchers identified three compounds through drug repurposing that showed strong inhibitory activity against the main protease of the novel coronavirus. One of these compounds demonstrated potential antiviral activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Review
Chemistry, Medicinal
Guillem Macip, Pol Garcia-Segura, Julia Mestres-Truyol, Bryan Saldivar-Espinoza, Maria Jose Ojeda-Montes, Aleix Gimeno, Adria Cereto-Massague, Santiago Garcia-Vallve, Gerard Pujadas
Summary: This review critically evaluates 61 peer-reviewed manuscripts that use a docking step in virtual screening to predict SARS-CoV-2 M-pro inhibitors. The study finds that most manuscripts do not validate their methodology or results, and the docking scores do not effectively predict the potency of M-pro inhibitors or differentiate between active and inactive compounds. The correlation between pIC(50) and docking scores is not strong, indicating limitations in using docking scores as a cutoff value for selecting new M-pro inhibitors or predicting relative bioactivity.
MEDICINAL RESEARCH REVIEWS
(2022)
Article
Pharmacology & Pharmacy
Rama Dey-Rao, George R. Smith, Uddhav Timilsina, Zackary Falls, Ram Samudrala, Spyridon Stavrou, Thomas Melendy
Summary: The development of a live-cell based assay for evaluating the intracellular function of CoV2 Mpro has proven to be effective in screening for potential antiviral drugs targeting coronaviruses. This high-throughput screening system shows promise in identifying novel treatments for coronavirus infections.
ANTIVIRAL RESEARCH
(2021)
Article
Pharmacology & Pharmacy
Laura Goracci, Arianna Loregian, Beatrice Mercorelli, Jenny Desantis, Marta Celegato, Alessandro Bazzacco, Lydia Siragusa, Paolo Benedetti, Michela Eleuteri, Federico Croci, Gabriele Cruciani
Summary: Two years after its emergence, SARS-CoV-2 still poses a serious global threat to human health. In this study, researchers used a virtual screening platform to identify new chemical scaffolds with potential as inhibitors of the SARS-CoV-2 main protease (M-pro). Several of these compounds exhibited antiviral activity against SARS-CoV-2 and other human coronaviruses in different cell lines. Time-of-addition experiments showed that these compounds had an antiviral effect during the viral replication cycle. By optimizing one of the hit compounds, the researchers obtained two potent SARS-CoV-2 inhibitors with increased activity against M-pro in vitro and in infected cells. This study significantly expands the chemical diversity of SARS-CoV-2 M-pro inhibitors and provides new scaffolds for pan-coronavirus antiviral drug development.
ANTIVIRAL RESEARCH
(2022)
Article
Chemistry, Physical
Reaz Uddin, Khurshid Jalal, Kanwal Khan, Zaheer Ul-Haq
Summary: The emergence of the new coronavirus strain SARS-CoV-2 in late 2019 led to a global pandemic, with no specific treatments available. However, Direct Acting Antivirals (DAAs) have shown promise in inhibiting the virus, offering a potential solution to combat COVID-19. The study highlights the importance of drug repurposing and computational approaches in identifying new therapeutics against SARS-CoV-2.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Biochemistry & Molecular Biology
Feroza Begum, Amit Kumar Srivastava, Upasana Ray
Summary: The SARS-CoV-2 pandemic has led to expedited research efforts to find potential antiviral targets and drug development measures. Drug repurposing has shown promise in identifying FDA approved drugs for targeting functions of various proteins of the virus, with RdRp inhibitors being a potential area for further testing and development.
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Wenyue Cao, Chia-Chuan Dean Cho, Zhi Zachary Geng, Namir Shaabani, Xinyu R. Ma, Erol C. Vatansever, Yugendar R. Alugubelli, Yuying Ma, Sankar P. Chaki, William H. Ellenburg, Kai S. Yang, Yuchen Qiao, Robert Allen, Benjamin W. Neuman, Henry Ji, Shiqing Xu, Wenshe Ray Liu
Summary: The researchers developed an effective method to analyze the cellular potency of main protease (MPro) inhibitors for their toxicity and antiviral effect against SARS-CoV-2. Some antiviral agents showed weak cellular MPro inhibition potency, suggesting their involvement in interfering with other key steps in the virus life cycle. One of the inhibitors, MPI8, exhibited the highest cellular and antiviral potency, indicating the need for further research.
ACS CENTRAL SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Konda Mani Saravanan, Haiping Zhang, Renganathan Senthil, Kevin Kumar Vijayakumar, Vignesh Sounderrajan, Yanjie Wei, Harshavardhan Shakila
Summary: A novel coronavirus outbreak has posed a severe threat to human healthcare globally, and researchers have been searching for ways to control and prevent this deadly disease. In this study, antiviral compounds from traditional Indian medicinal plants were screened, and amentoflavone was identified as a potential inhibitor of the SARS-CoV2 main protease. Further biochemical experiments are needed to understand the mechanism of inhibition by these plant-derived antiviral compounds.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2022)
Article
Chemistry, Medicinal
Souvik Banerjee, Shalini Yadav, Sourav Banerjee, Sayo O. Fakayode, Jyothi Parvathareddy, Walter Reichard, Surekha Surendranathan, Foyez Mahmud, Ryan Whatcott, Joshua Thammathong, Bernd Meibohm, Duane D. Miller, Colleen B. Jonsson, Kshatresh Dutta Dubey
Summary: This study utilized pharmacophore and molecular modeling-based screening to identify potential antiviral drugs, with molecular dynamics simulations revealing three drugs with promising interactions with the SARS-CoV-2 M-pro active site. The results suggest Glu166 as an interesting target for structure-based drug design.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2021)
Review
Pharmacology & Pharmacy
Thales Kronenberger, Stefan A. Laufer, Thanigaimalai Pillaiyar
Summary: This article discusses the rationale for inhibitors targeting SARS-CoV-2 Mpro. Small molecules and peptidomimetic inhibitors are two types of inhibitors with different modes of action. Novel inhibitors discovered during the COVID-19 pandemic are highlighted, focusing on their binding modes and structures.
DRUG DISCOVERY TODAY
(2023)
Article
Neurosciences
Laura M. Taylor, Pamela J. McMillan, Nicole F. Liachko, Timothy J. Strovas, Bernardino Ghetti, Thomas D. Bird, C. Dirk Keene, Brian C. Kraemer
MOLECULAR NEURODEGENERATION
(2018)
Article
Neurosciences
Shi Quan Wong, Matthew G. Pontifex, Marie M. Phelan, Chandra Pidathala, Brian C. Kraemer, Jeff W. Barclay, Neil G. Berry, Paul M. O'Neill, Robert D. Burgoyne, Alan Morgan
NEUROBIOLOGY OF DISEASE
(2018)
Review
Biochemistry & Molecular Biology
Laura M. Taylors, Pamela J. McMillan, Brian C. Kraemer, Nicole F. Liachko
Article
Multidisciplinary Sciences
Sarah M. Waldherr, Timothy J. Strovas, Taylor A. Vadset, Nicole F. Liachko, Brian C. Kraemer
NATURE COMMUNICATIONS
(2019)
Article
Multidisciplinary Sciences
Eun-Gyung Lee, Jessica Tulloch, Sunny Chen, Lesley Leong, Aleen D. Saxton, Brian Kraemer, Martin Darvas, C. Dirk Keene, Andrew Shutes-David, Kaitlin Todd, Steve Millard, Chang-En Yu
Article
Genetics & Heredity
Nicole F. Liachko, Aleen D. Saxton, Pamela J. McMillan, Timothy J. Strovas, C. Dirk Keene, Thomas D. Bird, Brian C. Kraemer
Article
Biochemistry & Molecular Biology
Jeremy D. Baker, Rikki L. Uhrich, Timothy J. Strovas, Aleen D. Saxton, Brian C. Kraemer
ACS CHEMICAL NEUROSCIENCE
(2020)
Article
Biochemical Research Methods
Jeremy D. Baker, Rikki L. Uhrich, Timothy J. Strovas, Aleen D. Saxton, Brian C. Kraemer
Summary: Tauopathies are neurological disorders characterized by tau protein deposits, with a lack of disease-modifying therapies presenting a critical challenge. This study identified MSUT2 inhibitors as potential therapeutic targets for tauopathy disorders, with 4,4'-diisothiocyanostilbene-2,2'-sulfonic acid (DIDS) being identified as a tool compound for future research into the mechanism of MSUT2-induced tau pathology.
Article
Genetics & Heredity
Aleen D. Saxton, Brian C. Kraemer
Summary: ALS is a debilitating and fatal neurodegenerative disease that shares symptoms and pathology with FTLD. UBQLN2, a protein associated with these diseases, may cause familial ALS when mutated. Using a transgenic C. elegans model, it was found that UBQLN2-mediated neurodegeneration may involve TDP-43, providing insights into molecular cascades driving neurodegeneration in ALS and ALS-FTLD.
G3-GENES GENOMES GENETICS
(2021)
Article
Neurosciences
Pamela J. McMillan, Timothy J. Strovas, Misa Baum, Brooke K. Mitchell, Randall J. Eck, Nzinga Hendricks, Jeanna M. Wheeler, Caitlin S. Latimer, C. Dirk Keene, Brian C. Kraemer
Summary: Conserved nuclear RNA binding proteins play a crucial role in controlling tau aggregation and toxicity, while mislocalization of the nuclear speckle protein SRRM2 is associated with Alzheimer's disease. The progression of pathological tau is accompanied by increasing mislocalization of SRRM2, which may be related to the severity of pathological tau deposition.
ACTA NEUROPATHOLOGICA COMMUNICATIONS
(2021)
Article
Geriatrics & Gerontology
Rebecca L. Kow, Aristide H. Black, Aleen D. Saxton, Nicole F. Liachko, Brian C. Kraemer
Summary: Loss of ALYREF function can suppress tau and TDP-43-induced toxicity, but with different mechanisms and separate effects on mRNA and protein levels.
Article
Clinical Neurology
Pamela J. McMillan, Sarah J. Benbow, Rikki Uhrich, Aleen Saxton, Misa Baum, Timothy Strovas, Jeanna M. Wheeler, Jeremy Baker, Nicole F. Liachko, C. Dirk Keene, Caitlin S. Latimer, Brian C. Kraemer
Summary: Alzheimer's disease and related disorders are characterized by neurofibrillary tangles and other neuropathological lesions composed of tau protein. Recent studies have shown that aggregated tau forms distinct conformational variants specific to different types of tauopathy disorders. However, the factors driving the formation of these distinct pathological tau conformations remain unknown.
Article
Multidisciplinary Sciences
Randall J. Eck, Rebecca L. Kow, Aristide H. Black, Nicole F. Liachko, Brian C. Kraemer
Summary: The pathological accumulation of the microtubule binding protein tau is the main cause of age-related neurodegenerative diseases known as tauopathies. A study using a Caenorhabditis elegans model found that the toxicity of tau depends on the nuclear E3 ubiquitin ligase adaptor protein SPOP. Loss of function mutations in the spop-1 gene improved behavioral deficits in tau transgenic animals, while overexpression of SPOP-1 worsened these deficits. Furthermore, loss of spop-1 rescued various tau-related phenotypes, including tau protein accumulation, neurodegeneration, and shortened lifespan.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Biochemistry & Molecular Biology
R. L. Kow, A. H. Black, B. P. Henderson, B. C. Kraemer
Summary: This study identifies a mutation (W292X) in the sut-6 gene that strongly suppresses the toxic effects of tau accumulation in neurodegenerative diseases. Altering the RNA-related functions of SUT-6/NIPP1 provides the strongest suppression of tau.
HUMAN MOLECULAR GENETICS
(2023)