Results 31 to 40 of about 11,329 (154)

A Unifying Concept for the Prebiotic Formation of RNA Pyrimidine Nucleosides

ChemistryEurope, 2023
The question of how nucleosides might have formed as essential precursor molecules on the early Earth is one of the many challenges associated with the origin of life.
Jonas Feldmann, Mads K. Skaanning, Marcus Lommel, Tobias Kernmayr, Dr. Peter Mayer, Prof. Dr. Thomas Carell   +5 more
doaj   +1 more source

Cardiomyocytes disrupt pyrimidine biosynthesis in nonmyocytes to regulate heart repair

The Journal of Clinical Investigation, 2022
Various populations of cells are recruited to the heart after cardiac injury, but little is known about whether cardiomyocytes directly regulate heart repair.
Shen Li, Tomohiro Yokota, Ping Wang, Johanna ten Hoeve, Feiyang Ma, Thuc M. Le, Evan R. Abt, Yonggang Zhou, Rimao Wu, Maxine Nanthavongdouangsy, Abraham Rodriguez, Yijie Wang, Yen-Ju Lin, Hayato Muranaka, Mark Sharpley, Demetrios T. Braddock, Vicky E. MacRae, Utpal Banerjee, Pei-Yu Chiou, Marcus Seldin, Dian Huang, Michael Teitell, Ilya Gertsman, Michael Jung, Steven J. Bensinger, Robert Damoiseaux, Kym Faull, Matteo Pellegrini, Aldons J. Lusis, Thomas G. Graeber, Caius G. Radu, Arjun Deb   +31 more
doaj   +1 more source

Inhibitors of dihydroorotate dehydrogenase cooperate with molnupiravir and N4-hydroxycytidine to suppress SARS-CoV-2 replication

iScience, 2022
Summary: The nucleoside analog N4-hydroxycytidine (NHC) is the active metabolite of the prodrug molnupiravir, which has been approved for the treatment of COVID-19. SARS-CoV-2 incorporates NHC into its RNA, resulting in defective virus genomes. Likewise,
Kim M. Stegmann, Antje Dickmanns, Natalie Heinen, Claudia Blaurock, Tim Karrasch, Angele Breithaupt, Robert Klopfleisch, Nadja Uhlig, Valentina Eberlein, Leila Issmail, Simon T. Herrmann, Amelie Schreieck, Evelyn Peelen, Hella Kohlhof, Balal Sadeghi, Alexander Riek, John R. Speakman, Uwe Groß, Dirk Görlich, Daniel Vitt, Thorsten Müller, Thomas Grunwald, Stephanie Pfaender, Anne Balkema-Buschmann, Matthias Dobbelstein   +24 more
doaj   +1 more source

New Derivatives of 5-Substituted Uracils: Potential Agents with a Wide Spectrum of Biological Activity

Molecules, 2022
Pyrimidine nucleoside analogues are widely used to treat infections caused by the human immunodeficiency virus (HIV) and DNA viruses from the herpes family. It has been shown that 5-substituted uracil derivatives can inhibit HIV-1, herpes family viruses,
Vasily A. Kezin, Elena S. Matyugina, Mikhail S. Novikov, Alexander O. Chizhov, Robert Snoeck, Graciela Andrei, Sergei N. Kochetkov, Anastasia L. Khandazhinskaya   +7 more
doaj   +1 more source

Preparation of Pyrimidine Alkenyl Acyclic Nucleoside Phosphonoamidates [PDF]

Current Protocols in Nucleic Acid Chemistry, 2018
AbstractThis synthetic protocol describes two strategies for the preparation of pyrimidine alkenyl acyclic nucleoside phosphonoamidates (ANPs), including linear and trisubstituted alkenyl derivatives. For the first procedure, a bis‐trimethylsilyl ester of the parent alkenyl ANPs is the key intermediate that reacts with the desired amino acid ester and ...
Pileggi, Elisa, Serpi, Michaela, Pertusati, Fabrizio   +2 more
openaire   +2 more sources

Expanding Chemical Space of Nucleic Acid Nanoparticles for Tunable Antiviral‐Like Immunomodulatory Responses and Potent Adjuvant Activity

Advanced Functional Materials, EarlyView.
We introduce a nucleic acid nanoparticle (NANP) platform designed to be rrecognized by the human innate immune system in a regulated manner. By changing chemical composition while maintaining constant architectural parameters, we identify key determinants of immunorecognition enabling the rational design of NANPs with tunable immune activation profiles
Martin Panigaj, Hannah S. Newton, Jian Wang, Laxmi Pandey, Yelixza I. Avilla, Phong Nguyen, Morgan Chandler, Justin Halman, Yasmine Radwan, Stephanie Smith, Elijah Edmondson, Simone Difilippantonio, Chelsea Sanders, Bao Tran, Yongmei Zhao, Shaojun Xie, Edward Cedrone, Barry W. Neun, Meni Wanunu, Nikolay V. Dokholyan, Marina A. Dobrovolskaia, Kirill A. Afonin   +21 more
wiley   +1 more source

An Aminoisoxazole‐Based Proto‐RNA

ChemistryEurope, 2023
The RNA world hypothesis predicts that life started with the development of replicating and catalytically active RNA, which evolved in a process of molecular evolution to increasingly complex chemical structures.
Felix Xu, Dr. Stefan Wiedemann, Dr. Jonas Feldmann, Dr. Sidney Becker, Prof. Dr. Thomas Carell   +4 more
doaj   +1 more source

Stereospecific synthesis of  -anomeric pyrimidine nucleoside [PDF]

Nucleic Acids Symposium Series, 2000
A facile stereospecific synthetic method for alpha-anomeric 2'-deoxypyrimidine nucleoside unit utilizing aminooxazoline derivative of ribofuranose was investigated. Thus, easily accessible riboaminooxazoline derivative prepared by ribose and cyanamid was allowed to react with ethyl alpha-bromoethylacrylate to give corresponding adduct.
K, Shinozuka, N, Matsumoto, A, Nakamura, H, Hayashi, H, Sawai   +4 more
openaire   +2 more sources

RNA‐Micelles as Self‐Assembling Structures for Efficient Co‐Delivery of Synergistic siRNA and Nucleoside Analogues to Treat CRC Lung Metastasis

Advanced Functional Materials, EarlyView.
Two kinds of self‐assembled RNA micelles were used to co‐deliver synergistic siRNA and nucleoside analogues for the treatment of colorectal cancer lung metastases. Near‐complete elimination of lung cancer metastases was confirmed in an orthotopic lung metastasis model constructed using human colorectal cancer lung metastases patient surgical samples to
Kai Jin, Piotr Rychahou, Daniel W. Binzel, B. Mark Evers, Peixuan Guo   +4 more
wiley   +1 more source

Metarhizium anisopliae Mitigates the Phytotoxicity of Lead and Nanoplastics on Rice by Modifying Physiological, Transcriptomic, Metabolomic Activities, and Soil Microbiome

Advanced Science, EarlyView.
Metarhizium anisopliae alleviates the phytotoxic effects of polyethylene nanoplastics (NP) and lead (Pb) in rice by decreasing Pb uptake, restoring antioxidant and hormonal equilibrium, and promoting growth. Additionally, the fungus modifies the rhizosphere microbiota, enhancing both contaminant tolerance and plant growth, thereby effectively ...
Jing Peng, Qi Yan, Muhammad Umair Hassan, Muhammad Imran, Fasih Ullah Haider, Jianfeng Liang, Xingmin Wang, Shaukat Ali   +7 more
wiley   +1 more source