Results 71 to 80 of about 104,207 (331)

Mechanisms of base selection by the E.coli mispaired uracil glycosylase [PDF]

, 2008
The repair of the multitude of single-base lesions formed daily in the cells of all living organisms is accomplished primarily by the base-excision repair (BER) pathway that initiates repair through a series of lesion-selective glycosylases.
Darwanto, Agus, Goddard, William, III, Liu, Pingfang, Pascal, Tod, Sowers, Lawrence C., Theruvathu, Jacob A., Valinluck Lao, Victoria   +6 more
core   +2 more sources

The GGH/HuR Complex Binds and Stabilizes mRNAs to Maintain Tumor Cell Cycle and DNA Replication

Advanced Science, EarlyView.
Despite its canonical role in inhibiting DNA synthesis, GGH promotes tumor growth as a novel RNA‐binding protein. GGH binds GC‐rich 5′UTRs (e.g., CDC6/CCND1), recruits HuR to form a ternary complex that stabilizes mRNA via circular conformation, fueling DNA replication and the cell cycle. Targeting this axis suppresses NSCLC progression.
Yu Li, Xinrui Li, Yuhui Du, Sijie Chen, Xiaoniu He, Zhangrong Xie, Zhiqing Zhou, Huijie Zhao, Xiaofei Zeng, Guoan Chen   +9 more
wiley   +1 more source

Serendipitous Identification of Azine Anticancer Agents Using a Privileged Scaffold Morphing Strategy

Molecules
The use of privileged scaffolds as a starting point for the construction of libraries of bioactive compounds is a widely used strategy in drug discovery and development.
Silvia Cesarini, Ilaria Vicenti, Federica Poggialini, Silvia Filippi, Eleonora Mancin, Lia Fiaschi, Elisa De Marchi, Federica Giammarino, Chiara Vagaggini, Bruno Mattia Bizzarri, Raffaele Saladino, Elena Dreassi, Maurizio Zazzi, Lorenzo Botta   +13 more
doaj   +1 more source

m6A‐Modified circRAPGEF1 Interaction with IGF2BP3 Promotes Hepatocellular Carcinoma Progression via Reprogramming Aspartate Metabolism

Advanced Science, EarlyView.
In hepatocellular carcinoma (HCC), the m6A‐modified circRAPGEF1 destabilizes ASS1 mRNA via competitive binding to IGF2BP3, driving aspartate metabolic reprogramming in liver cancer stem cells (LCSCs). This cascade enhances stemness properties and reduces sorafenib sensitivity in LCSCs, thereby identifying circRAPGEF1 as a promising therapeutic target ...
Juanyi Shi, Sintim Mui, Yongcong Yan, Shaomin Liu, Kai Wen, Chuanchao He, Huoming Li, Hao Liao, Meng Tao, Jiahua Wen, Weidong Wang, Xiaoding Xu, Zhenyu Zhou, Zhiyu Xiao   +13 more
wiley   +1 more source

Synthesis and Antioxidant Activities of Novel Pyrimidine Acrylamides as Inhibitors of Lipoxygenase: Molecular Modeling and In Silico Physicochemical Studies

Molecules
The pyrimidine ring is present in various biomolecules such as DNA and RNA bases, aminoacids, vitamins, etc. Additionally, many clinically used drugs including methotrexate and risperidone contain the pyrimidine heterocyclic scaffold as well.
Michail Saragatsis, Eleni Pontiki
doaj   +1 more source

Pyrimidine biosynthesis is not an essential function for trypanosoma brucei bloodstream forms [PDF]

, 2013
<p>Background: African trypanosomes are capable of both pyrimidine biosynthesis and salvage of preformed pyrimidines from the host, but it is unknown whether either process is essential to the parasite.</p> <p>Methodology/Principal ...
A Hofer, Anne Donachie, B Aronow, B Rodenko, BA Fox, Ben L. Kelly, CC Wang, D Bi, Daniel N. A. Tagoe, DB Longley, DJ Hammond, ET Larson, G Gao, G Priotto, H Hirumi, Harry P. de Koning, HF Hassan, HMS Ibrahim, HP De Koning, HP De Koning, HP De Koning, HP De Koning, HP De Koning, HP De Koning, IG Papageorgiou, JA Ali, Jane C. Munday, JB French, Juma A. M. Ali, K Van Dyke, KL Martin, Liam J. Morrison, LJ Wallace, M Balasegaram, M Berg, M Berg, MD Scahill, MI Al-Salabi, MJ Natto, MK Gould, N Sienkiewicz, N Sternberg, PI Fields, R Brun, R Brun, S Gudin, S Lillico, SM Landfear, TL Arakaki, V Bellofatto, VM Castillo-Acosta, ZN Wilson   +51 more
core   +3 more sources

Sleep Deprivation Activates a Conserved Lactate‐H3K18la‐RORα Axis Driving Neutrophilic Inflammation Across Species

Advanced Science, EarlyView.
Sleep deprivation triggers systemic immune activation characterized by neutrophil accumulation and cytokine release. This study reveals a conserved metabolic‒epigenetic mechanism whereby lactate‐induced H3K18 lactylation upregulates RORα expression, promoting neutrophilic inflammation.
Ren Zhou, Keyun Li, Xiezong Hu, Shuhao Fan, Yuxuan Gao, Xiaoshu Xue, Yu Bu, Haoyi Zhang, Yili Wang, Chunjiao Wei, Shangrong Zhang, Zhongwen Xie, Chao Liu, Peng Chen, Zongjun Yin, Dalong Ren   +15 more
wiley   +1 more source

The Flögel-three-component reaction with dicarboxylic acids – an approach to bis(β-alkoxy-β-ketoenamides) for the synthesis of complex pyridine and pyrimidine derivatives

Beilstein Journal of Organic Chemistry, 2014
An extension of the substrate scope of the Flögel-three-component reaction of lithiated alkoxyallenes, nitriles and carboxylic acids is presented. The use of dicarboxylic acids allowed the preparation of symmetrical bis(β-ketoenamides) from simple ...
Mrinal K. Bera, Moisés Domínguez, Paul Hommes, Hans-Ulrich Reissig   +3 more
doaj   +1 more source

Structure and mechanism of human DNA polymerase η [PDF]

, 2010
The variant form of the human syndrome xeroderma pigmentosum (XPV) is caused by a deficiency in DNA polymerase eta (Pol eta), a DNA polymerase that enables replication through ultraviolet-induced pyrimidine dimers.
A Alt, A Mees, A Nicholls, A Scrima, AJ McCoy, AJ McCoy, Alan R. Lehmann, AR Lehmann, AT Brünger, BC Broughton, C Masutani, C Masutani, C Vonrhein, Chikahide Masutani, Christian Biertümpfel, DE Brash, DF Jarosz, DG Vassylyev, DV Bugreev, E Bassett, E Glick, F Wang, Fumio Hanaoka, H Inui, H Ling, H Ling, H Ling, H Park, H Saribasak, IW Davis, J Bauer, J Di Lucca, J Trincao, J Yao, Jae Young Lee, JH Min, K Sugasawa, L Jia, L Rey, L Wang, M Tanioka, Mark Gregory, MJ McIlwraith, P Emsley, R Kusumoto, R Kusumoto, RC Wilson, RE Johnson, RJ Kokoska, S Broyde, S Creighton, S Lone, Santiago Ramón-Maiques, SD McCulloch, SG Chaney, T Hishida, T Kawamoto, TC Terwilliger, W Kabsch, W Yang, W Yang, WA Hendrickson, Wei Yang, Y Li, Ye Zhao, Yuji Kondo, Z Otwinowski   +66 more
core   +2 more sources

Adipose Tissue Macrophages as Initiators of Exacerbated Periodontitis in Estrogen‐Deficient Environments via the Amplifier Extracellular Vesicles

Advanced Science, EarlyView.
Chronic systemic inflammation, worsened by estrogen deficiency, underlies and exacerbates periodontitis. Proinflammatory macrophages within visceral adipose tissue are hyperactivated due to hyper‐DNA methylation, releasing small extracellular vesicles (sEVs) similar to those of their parent cells.
Danfeng Li, Tian Yang, Yuqian Li, Xinwei Lyu, Cheng Hu, Jiayin Yan, Jiali Tan   +6 more
wiley   +1 more source