Results 81 to 90 of about 68,974 (263)

Artemisinin Derivatives Target Topoisomerase 1 and Cause DNA Damage in Silico and in Vitro

Frontiers in Pharmacology, 2017
DNA topoisomerases 1 and 2 are enzymes that maintain DNA topology and play important essential genome functions, including DNA replication and transcription.
Onat Kadioglu, Ariel Chan, Alena Cong Ling Qiu, Vincent Kam Wai Wong, Vanessa Colligs, Sabine Wecklein, Halima Freund-Henni Rached, Thomas Efferth, Wen-Luan Wendy Hsiao   +8 more
doaj   +1 more source

Multivalent RNA‐Cleaving Agents on a Cubic Octameric Silsesquioxane Core

Chemistry – A European Journal, EarlyView.
RNA‐cleaving agents on a cubic octameric silsesquioxane core were synthesized and characterized. Several catalytic systems of these structures were screened using hexaribonucleotide models. The best systems were then further used to study their catalytic efficiency in cleaving a HER2 mRNA model sequence. The induced cleavage sites were also determined.
Hanni Haapsaari, Iris Tuomi, Pasi Virta
wiley   +1 more source

Nutritionally physiological cell culture medium and 3D culture influence breast tumour proteomics and anti-cancer drug effectiveness

Pharmacological Research
Many drugs have been discontinued during phase II/III breast cancer clinical trials due to lack of clinical efficacy, indicating shortcomings in predictive value of preclinical data.
Xiaodan Zhang, Tianhong Cheng, Ellie Cho, Wenjia Lu, Delphine Denoyer, Paul McMillan, Kalyan Shobhana, Swati Varshney, Nicholas A. Williamson, Alastair Stewart   +9 more
doaj   +1 more source

Pyruvate dehydrogenase autoantibodies in autoantibody‐negative patients with seizures are associated with reduced pyruvate dehydrogenase activity

Epilepsia, EarlyView.
Abstract Objective We investigated the presence and potential functional relevance of antimitochondrial autoantibodies in patients suspicious for autoimmune encephalitis (AIE) associated with psychiatric symptoms and/or seizures, who were negative for known antineuronal autoantibodies.
Annika Breuer, Chiara A. Hummel, Tobias Baumgartner, Juliane L. Berns, Afaf Milad Said, Isabel Bünger, Susanne Schoch, Gábor Zsurka, Harald Prüss, Wolfram S. Kunz, Rainer Surges, Albert J. Becker, Julika Pitsch   +12 more
wiley   +1 more source

MET Expression in Upper Gastrointestinal Adenocarcinoma: Prevalence, Prognostic Impact, and Implications for Anti‐MET Antibody‐Drug Conjugate Therapy

International Journal of Cancer, EarlyView.
ABSTRACT MET is an actionable receptor tyrosine kinase, and MET‐directed antibody–drug conjugates (ADCs) have recently entered clinical practice with FDA approval in non‐small cell lung cancer and are now being evaluated across gastrointestinal malignancies, with patient selection based on MET immunohistochemistry (IHC) 3+ membranous staining at ...
Tillmann Bedau, Thomas Zander, Hans Anton Schlößer, Hakan Alakus, Onur Mustafov, Reinhard Büttner, Christiane Bruns, Alexander Quaas   +7 more
wiley   +1 more source

A multiplex interactome of Ebola virus proteins reveals TM9SF2 as a cell‐surface attachment factor that promotes viral entry

iMetaOmics, EarlyView.
This study generates a comprehensive Ebola virus (EBOV)‐human protein–protein interactome, comprising 1728 core high‐confidence interactions. Further interactome analysis revealed the potential association of EBOV glycoprotein (GP) with the host factor TM9SF2. Subsequent mechanistic investigations confirmed that TM9SF2 functions as an attachment factor
Limin Shang, Shouwen Du, Yuchen Liu, Letian Li, Xi Wu, Yanzhi Yuan, Chaozhi Jin, Qingkun Mi, Yuhang Wang, Xiaoshuang Shi, Jiamin Wang, Guoqing Zhang, Yidan Ma, Weijin Huang, Jigang Wang, Jian Wang, Chang Li   +16 more
wiley   +1 more source

Rapid, DNA-induced interface swapping by DNA gyrase

eLife
DNA gyrase, a ubiquitous bacterial enzyme, is a type IIA topoisomerase formed by heterotetramerisation of 2 GyrA subunits and 2 GyrB subunits, to form the active complex.
Thomas RM Germe, Natassja G Bush, Victoria M Baskerville, Dominik Saman, Justin LP Benesch, Anthony Maxwell   +5 more
doaj   +1 more source

The Effects of Angiotensin Receptor Neprilysin Inhibitor on Endoplasmic Reticulum Stress in Doxorubicin‐Mediated Cardiomyopathy‐Associated Heart Failure Model in Rats

Journal of Applied Toxicology, EarlyView.
ABSTRACT One of the most serious complications associated with the use of the chemotherapeutic agent doxorubicin (DOX) is cardiomyopathy. Although cardioprotective drugs such as angiotensin receptor‐neprilysin inhibitors (ARNI) are used to prevent cardiomyopathy in DOX patients, no studies have reported the relationship between ARNI and endoplasmic ...
Mert Unvan, Meryem İlkay Karagül, Hatice Oruç Demirbağ, Ebru Balli   +3 more
wiley   +1 more source

Structure-function analysis of the ATPase domain of African swine fever virus topoisomerase

mBio
Type II topoisomerase utilizes the energy from ATP hydrolysis to alter DNA topology during genome replication and transcription. The ATPase domain of this enzyme is required for ATP hydrolysis and plays a crucial role in coupling DNA binding and ATP ...
Wenhua Kuang, Yan Zhao, Jinyue Li, Zengqin Deng   +3 more
doaj   +1 more source

Epirubicin Alters Pancreatic Autophagy and Insulin Synthesis Through a Zinc‐Dependent Mechanism

Journal of Applied Toxicology, EarlyView.
ABSTRACT Epirubicin (EPI) can cause metabolic side effects, including chemotherapy‐related diabetes, partly through oxidative stress that disrupts zinc (Zn) homeostasis and impairs autophagy. This study investigated the effects of EPI on Zn regulation and autophagy in the pancreas, as well as the modulatory role of N‐acetylcysteine (NAC). Rats received
Ebru Afşar, Işıl Eranıl
wiley   +1 more source