Results 101 to 110 of about 57,780 (287)

Breakage-reunion domain of Streptococcus pneumoniae topoisomerase IV: crystal structure of a gram-positive quinolone target.

PLoS ONE, 2007
The 2.7 A crystal structure of the 55-kDa N-terminal breakage-reunion domain of topoisomerase (topo) IV subunit A (ParC) from Streptococcus pneumoniae, the first for the quinolone targets from a gram-positive bacterium, has been solved and reveals a ...
Ivan Laponogov, Dennis A Veselkov, Maninder K Sohi, Xiao-Su Pan, Aniruddha Achari, Cheng Yang, Joseph D Ferrara, L Mark Fisher, Mark R Sanderson   +8 more
doaj   +1 more source

TDP1 deficiency sensitizes human cells to base damage via distinct topoisomerase I and PARP mechanisms with potential applications for cancer therapy [PDF]

, 2013
Base damage and topoisomerase I (Top1)-linked DNA breaks are abundant forms of endogenous DNA breakage, contributing to hereditary ataxia and underlying the cytotoxicity of a wide range of anti-cancer agents.
Alagoz, Boyd, Breslin, Caldecott, Chen, Chiang, Ciccia, Dalhus, Das, Demple, Dungey, El-Khamisy, Fu, Godon, Hecht, Hegde, Hudson, Interthal, Interthal, Kato, Katyal, Kummar, Lebedeva, Lindahl, Lindahl, Liu, Loeb, Luo, Madhusudan, Meisenberg, Meryem Alagoz, Mohammed, Morland, Murai, Murai, Nilsen, Owen S. Wells, Pommier, Pourquier, Povirk, Ray Chaudhuri, Rydberg, Sherif F. El-Khamisy, Strom, Sultana, Takashima, Wilson, Xanthoudakis, Yang, Zeng, Zhou   +50 more
core   +1 more source

Effect of developmental changes on pharmacokinetics of drugs used in the treatment of infant acute lymphoblastic leukaemia—A comprehensive review

British Journal of Clinical Pharmacology, EarlyView.
While the event‐free survival (EFS) of children treated for acute lymphoblastic leukaemia (ALL) has improved greatly in the last decades, the EFS for patients diagnosed with ALL before the age of one is still under 50%. This outcome further decreases when infants have a rearrangement in the gene encoding histone‐lysine N‐methyltransferase 2A (KMT2A ...
Tirsa de Kluis, Leiah J. Brigitha, Lidwien M. Hanff, Alwin D. R. Huitema, Inge M. van der Sluis, Meta H. M. Diekstra   +5 more
wiley   +1 more source

A pH‐responsive charge‐reversal liposome with enhanced biofilm penetration for multimodal synergistic therapy of bacterial infections

BMEMat, EarlyView.
This study develops a pH‐responsive, charge‐reversal liposome for treating bacterial biofilm infections. With enhanced penetration capability, the liposome effectively delivers antibacterial agents into biofilms. By integrating photodynamic and photothermal therapies with antibiotics, it significantly eradicates biofilms and accelerates bacteria ...
Ruyue Li, Bo Liu, Cheng Wang, Zhencheng Sun, Shuyi Lv, Liang Tian, Minghui Xiao, Qinyang Zheng, Linqi Shi, Chunlei Zhu   +9 more
wiley   +1 more source

A complex suite of loci and elements in eukaryotic type II topoisomerases determine selective sensitivity to distinct poisoning agents

Nucleic Acids Research, 2019
Type II topoisomerases catalyze essential DNA transactions and are proven drug targets. Drug discrimination by prokaryotic and eukaryotic topoisomerases is vital to therapeutic utility, but is poorly understood. We developed a next-generation sequencing (
T. R. Blower, Afif F. Bandak, A. S. Lee, C. Austin, J. Nitiss, J. Berger   +5 more
semanticscholar   +1 more source

Interpretation of in vitro concentration‐response data for risk assessment and regulatory decision‐making: Report from the 2022 IWGT quantitative analysis expert working group meeting

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Quantitative risk assessments of chemicals are routinely performed using in vivo data from rodents; however, there is growing recognition that non‐animal approaches can be human‐relevant alternatives. There is an urgent need to build confidence in non‐animal alternatives given the international support to reduce the use of animals in toxicity ...
Marc A. Beal, Guangchao Chen, Kerry L. Dearfield, Min Gi, Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Alexandra S. Long, David P. Lovell, Barbara L. Parsons, Stefan Pfuhler, John Wills, Andreas Zeller, George Johnson, Paul A. White   +14 more
wiley   +1 more source

Effects of Olive Metabolites on DNA Cleavage Mediated by Human Type II Topoisomerases

Biochemistry, 2015
Several naturally occurring dietary polyphenols with chemopreventive or anticancer properties are topoisomerase II poisons. To identify additional phytochemicals that enhance topoisomerase II-mediated DNA cleavage, a library of 341 Mediterranean plant ...
K. R. Vann, Carl A. Sedgeman, J. Gopas, A. Golan‐Goldhirsh, N. Osheroff   +4 more
semanticscholar   +1 more source

An atypical type II topoisomerase from Mycobacterium smegmatis with positive supercoiling activity [PDF]

, 2005
Topoisomerases are essential ubiquitous enzymes, falling into two distinct classes. A number of eubacteria including Escherichia coli, typically contain four topoisomerases, two type I topoisomerases and two type II topoisomerases viz.
Jain, Paras, Nagaraja, Valakunja
core   +1 more source

Phytochemical‐Based Strategies for Lung Cancer: Clinical Insights Into Pleiotropic Molecular Signaling and Therapeutic Roles

Phytotherapy Research, EarlyView.
Lung cancer (LC) remains the leading cause of global cancer‐related death. Phytochemicals from medicinal plants are increasingly being considered as potential LC treatment agents due to their multi‐targeted action, safety, and accessibility. These have anticancer properties by regulating key molecular signaling pathways.
Md. Rezaul Islam, Abdur Rauf, Happy Akter, Md. Ibrahim Khalil Al‐Imran, Md. Naeem Hossain Fakir, Gazi Kaifeara Thufa, Umme Habiba, Karjin Nahar Riya, Md. Mahfuzur Rahman, Md Sadique Hussain, Hanan A. Ogaly, Abdullah S. M. Aljohani, Waleed Al Abdulmonem, Dorota Formanowicz, Marcello Iriti   +14 more
wiley   +1 more source

Amsacrine Derivatives Selectively Inhibit Mycobacterial Topoisomerase I (TopA), Impair M. smegmatis Growth and Disturb Chromosome Replication

Frontiers in Microbiology, 2018
Amsacrine, which inhibits eukaryotic type II topoisomerase via DNA intercalation and stabilization of the cleavable topoisomerase-DNA complex, promotes DNA damage and eventually cell death.
Marcin J. Szafran, Marta Kołodziej, Patrycja Skut, Brahmam Medapi, Agnieszka Domagała, Damian Trojanowski, Jolanta Zakrzewska-Czerwińska, Jolanta Zakrzewska-Czerwińska, Dharmarajan Sriram, Dagmara Jakimowicz, Dagmara Jakimowicz   +10 more
doaj   +1 more source