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| Open AccessA lymphatic-absorbed multi-targeted kinase inhibitor for myelofibrosis therapy
Combination therapies simultaneously inhibiting different therapeutic targets in cancer is challenged by individual pharmacokinetic profiles. Here, the authors generate an orally provided multi-targeted kinase inhibitor that is lymphatic absorbed and increases survival in a murine model of myelofibrosis.
- Brian D. Ross
- , Youngsoon Jang
- & Marcian E. Van Dort
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| Open AccessA genetic engineering strategy for editing near-infrared-II fluorophores
It is currently difficult to synthesise NIR-II probes with good quantum yields, biocompatibility and pharmacokinetics. Here the authors report a strategy to alter these properties by modifying the protein coatings with biofunctional molecules, and generate long-wavelength fluorophores for in vivo imaging.
- Rui Tian
- , Xin Feng
- & Xiaoyuan Chen
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| Open AccessMaximizing response to intratumoral immunotherapy in mice by tuning local retention
Understanding the pharmacokinetics of locally-injected drugs could aid in the design of immunotherapies to maximize their therapeutic effect. Here, by evaluating different IL-2 fusion proteins, the authors show that molecular weight and matrix binding affect anti-tumor immune response and report a pharmacokinetic framework to predict response to intratumoral IL-2 therapy.
- Noor Momin
- , Joseph R. Palmeri
- & K. Dane Wittrup
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| Open AccessPreclinical characterization of an intravenous coronavirus 3CL protease inhibitor for the potential treatment of COVID19
The 3CL protease of SARS-CoV-2 is inhibited by PF-00835231 in vitro. Here, the authors show that the prodrug PF-07304814 has broad spectrum activity, inhibiting SARS-CoV and SARS-CoV-2 in mice and its ADME and safety profile support clinical development.
- Britton Boras
- , Rhys M. Jones
- & Charlotte Allerton
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| Open AccessA novel RyR1-selective inhibitor prevents and rescues sudden death in mouse models of malignant hyperthermia and heat stroke
Mutations in ryanodine receptor 1 (RyR1), a Ca2+ release channel in skeletal muscle, cause malignant hyperthermia (MH) and are involved in heat stroke. Here, the authors show that an oxolinic acid-derivative RyR1 inhibitor effectively prevents and treats MH and heat stroke in various MH mouse models.
- Toshiko Yamazawa
- , Takuya Kobayashi
- & Takashi Murayama
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Article
| Open AccessCreation of a long-acting nanoformulated dolutegravir
Current ART for treatment of HIV-1 infection requires a strict daily regimen adherence. Herein, the authors report the manufacture and characterization of a nanoformulated dolutegravir prodrug with improved cell and tissue penetration, a remarkable apparent half-life and the potential for bimonthly drug administration.
- Brady Sillman
- , Aditya N. Bade
- & Howard E. Gendelman
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Article
| Open AccessPrinting of small molecular medicines from the vapor phase
Traditional approaches used in the pharmaceutical industry are not precise or versatile enough for customized medicine formulation and manufacture. Here the authors produce a method to form coatings, with accurate dosages, as well as a means of closely controlling dissolution kinetics.
- Olga Shalev
- , Shreya Raghavan
- & Max Shtein
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| Open AccessTherapeutic efficacy of a respiratory syncytial virus fusion inhibitor
Respiratory syncytial virus causes lung infections in children, immunocompromised adults, and in the elderly. Here the authors show that a chemical inhibitor to a viral fusion protein is effective in reducing viral titre and ameliorating infection in rodents and neonatal lambs.
- Dirk Roymans
- , Sarhad S Alnajjar
- & Anil Koul
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Article
| Open AccessTarget engagement and drug residence time can be observed in living cells with BRET
Drug molecules operate through physical interaction with specific cellular targets, and understanding this interaction is important for mechanisms and the potential therapeutic effect of drug candidates. Here, the authors show that bioluminescence resonance energy transfer can be used to monitor the intracellular engagement of a drug with its target.
- Matthew B. Robers
- , Melanie L. Dart
- & Keith V. Wood
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| Open AccessLansoprazole is an antituberculous prodrug targeting cytochrome bc1
Tuberculosis control is threatened by the continued emergence of drug-resistant strains. Here, Rybniker et al. screen a library of FDA-approved drugs and identify a gastric proton pump inhibitor that also has antituberculosis activity and targets the bacterial cytochrome bc1complex.
- Jan Rybniker
- , Anthony Vocat
- & Stewart T. Cole
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Pharmacological repression of PPARγ promotes osteogenesis
Central to the lineage commitment of multipotent mesenchymal stem cells is the nuclear receptor PPARγ, the master regulator of adipogenesis. Here the authors use a variety of structural approaches to rationally design PPARγ inverse agonist SR2595, and demonstrate its ability to promote osteogenesis.
- David P. Marciano
- , Dana S. Kuruvilla
- & Patrick R. Griffin
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Article
| Open AccessStereochemical bias introduced during RNA synthesis modulates the activity of phosphorothioate siRNAs
Therapeutic oligonucleotides can be made more stable by substituting their achiral phosphodiester groups for chiral phosphorothioate linkages. Here, the authors present a synthesis of phosphorothioated RNAs, where the activator controls strand stereochemistry, and also the activity of assembled siRNAs.
- Hartmut Jahns
- , Martina Roos
- & Jonathan Hall
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High-throughput and combinatorial gene expression on a chip for metabolism-induced toxicology screening
Current tools to test drug metabolism and toxicity in the liver are mainly based on time-consuming traditional cell culture methods. Here Kwon et al.report a high-throughput system employing cells cultured on micropillars that can be transfected with combinations of drug-metabolizing enzymes.
- Seok Joon Kwon
- , Dong Woo Lee
- & Moo-Yeal Lee
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Single-cell and subcellular pharmacokinetic imaging allows insight into drug action in vivo
Current pharmacokinetic models describe the distribution of drugs within tissues but usually lack single-cell resolution. Here Weissleder and colleagues visualize the subcellular distribution of an anticancer drug in real time in living animals and develop a model to extrapolate these findings to humans.
- Greg M. Thurber
- , Katy S. Yang
- & Ralph Weissleder
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Catalytic site remodelling of the DOT1L methyltransferase by selective inhibitors
Selective inhibitors of protein methyltransferases are anticancer drug candidates. Yu et al. report the structural changes that occur when selective inhibitors bind to the protein methyltransferase DOT1L.
- Wenyu Yu
- , Emma J. Chory
- & Matthieu Schapira