Results 81 to 90 of about 209,598 (340)

Effectiveness of Multivitamins vs Folic Acid on Prevention of Neural Tube Defects in Mouse Genetic Models and Human Organoids

Advanced Science, EarlyView.
Folic acid (FA) and multivitamins/minerals (MVM) are recommended for the prevention of neural tube defects (NTDs). Using a novel human neural tube‐like organoid system and mouse models, the study compares the effectiveness of two supplements on NTDs and cellular behaviors.
Huili Li, Jing Zhang, Lori Bulwith, Lee Niswander   +3 more
wiley   +1 more source

Biocatalytic Regioselective C‐Formylation of Resorcinol Derivatives

Angewandte Chemie, EarlyView.
An acyltransferase from Chromobacterium sphagni (CsATase) was identified that catalyzes the regioselective formylation of resorcinol substrates. The formylation of substituted resorcinol derivatives yielded mono‐formylated products with up to 99% conversion and up to 74% isolated yield.
Lilla Gal, Suresh Rohan, Anna Żądło‐Dobrowolska, Bianca Hilweg, Judith Müller, Kai Tittmann, Wolfgang Kroutil   +6 more
wiley   +2 more sources

Parallel purine‐pyrimidine‐purine triplex: experimental evidence for existence [PDF]

FEBS Letters, 1995
Oligonucleotides 5′‐d(CT)5‐L‐d(AG)5‐L‐d(GA)5‐3′ and 5′‐d(GA)5‐L‐d(TC)5‐L‐d(GA)5‐3′ [L = pO(CH2CH2O)3p] were studied by thermal denaturation, chemical modification and binding of fluorescent dyes. Both oligonucleotides are shown to fold back on itself twice forming at pH 7 a sufficiently stable triplex ether with antiparallel‐oriented oligopurine ...
Shchyolkina, Anna K., Borisova, Olga F., Minyat, Elvira E., Timofeev, Edward N., Il'icheva, Irina A., Khomyakova, Elena B., Florentiev, Vladimir L.   +6 more
openaire   +2 more sources

Purine-Metabolising Enzymes and Apoptosis in Cancer

Cancers, 2019
The enzymes of both de novo and salvage pathways for purine nucleotide synthesis are regulated to meet the demand of nucleic acid precursors during proliferation.
M. Camici, M. Garcia-Gil, R. Pesi, S. Allegrini, M. Tozzi   +4 more
semanticscholar   +1 more source

Engineering Compact Base Editors by AlphaFold‐Guided Mutation Scan and Escherichia coli‐Based Tri‐Selection

Advanced Science, EarlyView.
A miniaturized deaminase SsdAtox was scanned with AlphaFold to identify DNA binding pocket hot spots. Site‐saturation mutagenesis at gatekeeper residue K31 yielded ten‐fold activity enhancement. Trinity Screen, an E. coli‐based three‐in‐one platform selecting for high activity and reduced double‐strand breaks, enabled combinatorial evolution at DNA ...
Ryeo Gang Son, Goeun Kim, Jungjoon K. Lee   +2 more
wiley   +1 more source

Genetic ablation of purine salvage in Cryptosporidium parvum reveals nucleotide uptake from the host cell

Proceedings of the National Academy of Sciences of the United States of America, 2019
Significance Nucleotides are the activated building blocks for DNA and RNA as well as the major form of energy in all living organisms. Cells need to synthesize nucleotides to grow. Interference with this synthesis is thus widely used to treat infections
M. Pawlowic, Mastanbabu Somepalli, Adam Sateriale, Gillian T. Herbert, Alexis R. Gibson, G. Cuny, L. Hedstrom, B. Striepen   +7 more
semanticscholar   +1 more source

GOT1 Inhibition Induces Extracellular Matrix Remodeling in Pancreatic Cancer

Advanced Science, EarlyView.
Using tumor tissue engineering, we recreated pancreatic cancer and found that inhibiting glutamic‐oxaloacetic transaminase 1 (GOT1) induces extracellular matrix remodeling and secretome rewiring, as well as promotes cell death. ABSTRACT Pancreatic cancer cells rely on glutamine to sustain their survival in the stiff and poorly vascularized tumor ...
Rodrigo Curvello, Sandra Hauser, Michael Seifert, Christopher K. Barlow, Joel R. Steele, Emma Salisbury, Daniel Croagh, Kathryn S. Stok, Anna V. Taubenberger, Ralf B. Schittenhelm, Daniela Loessner   +10 more
wiley   +1 more source

The Safeguarding Microglia: Central Role for P2Y12 Receptors

Frontiers in Pharmacology, 2021
Si-Si Lin, Si-Si Lin, Yong Tang, Yong Tang, Peter Illes, Peter Illes, Peter Illes, Alexei Verkhratsky, Alexei Verkhratsky, Alexei Verkhratsky   +9 more
doaj   +1 more source

Hypoxia modulates the purine salvage pathway and decreases red blood cell and supernatant levels of hypoxanthine during refrigerated storage

Haematologica, 2017
Hypoxanthine catabolism in vivo is potentially dangerous as it fuels production of urate and, most importantly, hydrogen peroxide. However, it is unclear whether accumulation of intracellular and supernatant hypoxanthine in stored red blood cell units is
T. Nemkov, K. Sun, J. Reisz, Anren Song, T. Yoshida, A. Dunham, M. Wither, R. Francis, R. Roach, Monika Dzieciatkowska, S. Rogers, A. Doctor, Anastasios G. Kriebardis, M. Antonelou, I. Papassideri, C. Young, Tiffany A. Thomas, K. Hansen, S. Spitalnik, Yang Xia, J. Zimring, E. Hod, A. D’Alessandro   +22 more
semanticscholar   +1 more source

Spatially Resolved Multiomics Reveals Metabolic Remodeling and Autophagy Activation in Adamantinomatous Craniopharyngiomas

Advanced Science, EarlyView.
Multiomics integration analysis reveals the “cystic fluid–tumor cell” metabolic coupling that mediates active choline/ethanolamine uptake of tumor cells from cystic fluid and PC/PE synthesis pathways reprogramming that mediating autophagy pathway activation within ACP. ABSTRACT Adamantinomatous craniopharyngioma (ACP), a benign yet highly recurrent and
Dongting Chen, Yahui Gao, Yulin Wang, Ting Lei, Zheng Qu, Yuhan An, Jiaxu Fu, Xin Li, Fangjun Liu, Yan Li   +9 more
wiley   +1 more source