Results 191 to 200 of about 138,720 (265)

Five Issues of Artificial Intelligence in Science: Sailing the Ship of Theseus

Annals of Neurology, EarlyView.
Artificial intelligence (AI) is becoming part of the working infrastructure of academic medicine. Because grants convert scientific ideas into protected time, infrastructure, and institutional priority, they provide a revealing test case for AI's effects on biomedicine. Five issues are emerging: language, agency, review, doership, and identity.
S. Thomas Carmichael
wiley   +1 more source

Genetic Modifiers of ABCA1 Activity Interact with APOE Isoforms to Mediate Alzheimer's Disease Risk

Annals of Neurology, EarlyView.
Objective ATP‐binding cassette transporter A1 (ABCA1) has been associated with Alzheimer's disease (AD), but the mechanisms by which it impacts disease risk are unknown. ABCA1 is known to bind apolipoprotein E (ApoE) and catalyze apolipoprotein lipidation.
Andrés Peña‐Tauber, Ricardo Hernández Arriaza, Dylan Reil, Manon Muntaner, Junyoung Park, Benjamin Grenier‐Boley, Marc Hulsman, Philippe Amouyel, Céline Bellenguez, Camille Charbonnier, Jean‐François Deleuze, Orio Dols‐Icardo, John Hardy, Henne Holstege, Gaël Nicolas, Simon Mead, Michael Wagner, Alfredo Ramirez, Rebecca Sims, John van Swieten, Julie Willams, Jean‐Charles Lambert, Chaitan Khosla, Yann Le Guen, Michael D Greicius   +24 more
wiley   +1 more source

Tunable Regional Targeting of Self‐Assembling Peptide Nanomaterials in Acute Myocardial Infarction

Advanced NanoBiomed Research, EarlyView.
In a rat model of acute myocardial infarction, intravascular delivery of peptide nanofibers with a collagen‐targeting peptide bound to the infarct vasculature while globular peptide nanoparticles penetrated into the infarct area. This study demonstrated that size, shape, and surface chemistry of nanomaterials control the delivery location within the ...
Alexander Chen, Michael B. Nguyen, Elliot Widd, Julian Cheng, Benjamin D. Bridgelal, Kate E. Reimold, Selena Cao, Connor Uhre, Houston Harding, Chloe Hurteau, Anika Yogi, Colin Luo, Rebecca L. Braden, Pedro Cabrales, Karen L. Christman   +14 more
wiley   +1 more source

Entdeckung eines antiviralen Elektronentransferprozesses zur Erzeugung katalytisch selbstversorgender viraler Restriktionsfaktoren

Angewandte Chemie, EarlyView.
CYB5R3 wird als mutmaßlicher Elektronentransferpartner von Viperin (RSAD2) identifiziert, was erklärt, warum die ER‐Lokalisation für die antivirale Aktivität erforderlich ist. Dieses Wissen ermöglichte die Entwicklung immunstiller, katalytisch selbstversorgender antiviraler Restriktionsfaktor‐Enzyme (iCAREs), die ein antivirales Nukleosidtriphosphat ...
Mengdi Wu, Nghi Thao Hoang, Deborah Grifagni, Meritxell Wu‐Lu, Yujie Sheng, Theo Situmorang, Pei‐Hsin Tai, Zheng Chen, Astrid Maluta, Mohammed Hakil, Bianca Susini, Hannah Florance, Peter‐Leon Hagedoorn, John Mark Sutton, Maria‐Andrea Mroginski, Simone Ciofi‐Baffoni, Kourosh H. Ebrahimi   +16 more
wiley   +1 more source

Direct Regioselective para‐Fluorination via I(I)/I(III) Catalysis

Angewandte Chemie, EarlyView.
A direct, para‐selective fluorination by I(I)/I(III) catalysis is disclosed that does not require substrate pre‐functionalization. This strategy leverages the Leonard link inherent to phenylpropanoate and phenylpropanamides to promote a spirocyclization/para‐selective sequence. The C3‐side chain maps onto a range of common drug scaffolds and allows the
Christoph Roblick, Julian D. Bendix, Timothy A. Hilton, Kathrin Bussmann, Constantin G. Daniliuc, Ryan Gilmour   +5 more
wiley   +1 more source

Copper(II/III) Redox Couple Enables C─H Methylation via a Radical Mechanism Analogous to SAM Enzymes

Angewandte Chemie, EarlyView.
Biological C–H methylation proceeds through radical pathways mediated by one‐electron redox cofactors, yet no synthetic model has reproduced this reactivity. Here, we report the first isolable Cu(II/III)–methyl complexes that mediate C–H methylation through hydrogen atom transfer and methyl radical rebound.
Emily N. Doss, Curtis E. Moore, Shiyu Zhang   +2 more
wiley   +1 more source

Coordination‐Driven Direct C─H Metalation of N‐Heterocycles With a Superbasic Co(II) Amide Co(TMP)2

Angewandte Chemie, EarlyView.
By enabling regioselectivities that are inaccessible with conventional bases, this study introduces a Co(II) amide platform for the deprotonative C─H metalation of sensitive N‐heterocycles. Subsequent interception of the resulting Co(II) intermediates with external oxidants affords a family of sterically congested, TMP‐substituted heterocycles via C─N ...
Na Jin, Manting Mu, Max García‐Melchor, Eva Hevia   +3 more
wiley   +1 more source

Cobalt‐Catalyzed Radical Ligand Transfer (RLT) Enables Remote‐Markovnikov Hydroamination of Alkenes

Angewandte Chemie, EarlyView.
A cobalt‐catalyzed remote‐Markovnikov 1,3‐hydroamination of allyl carboxylates proceeds through MHAT, 1,2‐radical acyloxy migration (1,2‐RAM), and radical ligand transfer (RLT) from a Co‐N intermediate, providing protected amino alcohols. ABSTRACT Amino alcohols are prevalent in pharmaceuticals, agrochemicals, and functional materials, yet ...
Arman Khosravi, Ho Martin Yuen, Seth Fremin, Nuwan A. Pannilawithana, Nol Supasueb, Yu Zhang, Peng Liu, Ming‐Yu Ngai   +7 more
wiley   +1 more source

Discovery of an Antiviral Electron Transfer Process to Create Catalytically Self‐Sufficient Viral Restriction Factors

Angewandte Chemie International Edition, EarlyView.
CYB5R3 is identified as a putative electron‐transfer partner of viperin (RSAD2), explaining why ER localisation is required for antiviral activity. Its utilisation enabled the engineering of immune‐silent, catalytically self‐sufficient antiviral restriction factor enzymes (iCAREs) that produce an antiviral nucleoside triphosphate analogue (ANTA ...
Mengdi Wu, Nghi Thao Hoang, Deborah Grifagni, Meritxell Wu‐Lu, Yujie Sheng, Theo Situmorang, Pei‐Hsin Tai, Zheng Chen, Astrid Maluta, Mohammed Hakil, Bianca Susini, Hannah Florance, Peter‐Leon Hagedoorn, John Mark Sutton, Maria‐Andrea Mroginski, Simone Ciofi‐Baffoni, Kourosh H. Ebrahimi   +16 more
wiley   +1 more source