Results 51 to 60 of about 115,106 (246)

The role of NF-Y in the transcriptional regulation of human topoisomerase II¯ : a thesis presented to Massey University in partial fulfilment of the requirement for the degree of Master of Science in Biochemistry [PDF]

, 2001
DNA topoisomerases are ubiquitous enzymes that catalyse reactions that alter the topological state of DNA during the various processes of DNA metabolism including transcription, recombination, replication and chromosome segregation. Human cells exhibit a
Hintz, Patricia Ann
core  

A 3D Bioprinted Spheroid‐Laden dECM‐Enriched Osteosarcoma Model for Enhanced Drug Testing and Therapeutic Discovery

Advanced Healthcare Materials, EarlyView.
A 3D biomimetic OS model was developed by bioprinting an OS‐cell‐derived dECM‐enriched bioink with OS spheroids incorporated. The model showed upregulation of known OS prognostic markers and increased resistance to doxorubicin, compared to 2D cultures and scaffold‐free spheroids, making this a more clinically relevant platform for drug discovery ...
Margarida F. Domingues, Maria Catarina Carreira, Mafalda S. Santos, Daniela Pacheco, Frederico Castelo Ferreira, Paola Sanjuan‐Alberte, João Carlos Silva   +6 more
wiley   +1 more source

Topoisomerase IB poisons induce histone H2A phosphorylation as a response to DNA damage in Leishmania infantum

International Journal for Parasitology: Drugs and Drug Resistance, 2019
DNA topoisomerases are considered consolidated druggable targets against diseases produced by trypanosomatids. Several reports indicated that indenoisoquinolines, a family of non-camptothecinic based topoisomerase poisons, have a strong leishmanicidal ...
Camino Gutiérrez-Corbo, Raquel Álvarez-Velilla, Rosa M. Reguera, Carlos García-Estrada, Mark Cushman, Rafael Balaña-Fouce, Yolanda Pérez-Pertejo   +6 more
doaj   +1 more source

Two-Dimensional Gel Electrophoresis to Study the Activity of Type IIA Topoisomerases on Plasmid Replication Intermediates

Biology, 2021
DNA topoisomerases are the enzymes that regulate DNA topology in all living cells. Since the discovery and purification of ω (omega), when the first were topoisomerase identified, the function of many topoisomerases has been examined.
Jorge Cebrián, Victor Martínez, Pablo Hernández, Dora B. Krimer, María-José Fernández-Nestosa, Jorge B. Schvartzman   +5 more
doaj   +1 more source

Parallel analysis of ribonucleotide-dependent deletions produced by yeast Top1 in vitro and in vivo [PDF]

, 2016
Ribonucleotides are the most abundant non-canonical component of yeast genomic DNA and their persistence is associated with a distinctive mutation signature characterized by deletion of a single repeat unit from a short tandem repeat.
Burgers, Peter M, Cho, Jang-Eun, Huang, Shar-yin N, Jinks-Robertson, Sue, Pommier, Yves, Shuman, Stewart   +5 more
core   +2 more sources

Cohesin causes replicative DNA damage by trapping DNA topological stress [PDF]

, 2020
DNA topological stress inhibits DNA replication fork (RF) progression and contributes to DNA replication stress. In Saccharomyces cerevisiae, we demonstrate that centromeric DNA and the rDNA array are especially vulnerable to DNA topological stress ...
Baxter, Jonathan, Keszthelyi, Andrea, Minchell, Nicola Elizabeth   +2 more
core   +1 more source

Peptomer Linkers Enable Kinetic Control over Co‐Delivery of Multiple Chemotherapeutics

Advanced Healthcare Materials, EarlyView.
A key challenge in combinatorial chemotherapeutic drug delivery is independent control over release kinetics, especially with drugs of similar size and structure. Here, peptoid substitutions to proteolytically degradable peptides enabled the design of fast and slow‐releasing drug linkers.
Carolyn M. Watkins, Samuel L. Hallam, Mariah J. Austin, Adrianne M. Rosales   +3 more
wiley   +1 more source

Architecture of an All‐In‐One Microfluidic Platform for Accelerated Cancer Seeding, Enhanced Spheroid Formation, and Dynamic Drug Screening Trials

Advanced Materials Technologies, EarlyView.
An all‐in‐one microfluidic platform consists of two‐layered PDMS channels integrated with a hydrogel microwell array. This platform enables flow‐driven tumor cell capture, enhanced spheroid formation within the microwells, and advective drug testing. ABSTRACT Effective cancer drug screening requires platforms that replicate the physiological complexity
Omar M. Rahman, Shengxi Lan, Dae Kun Hwang   +2 more
wiley   +1 more source

Topoisomerase Induced DNA Damage Coupled Diseases and Therapeutic Potential [PDF]

Journal of Stress Physiology & Biochemistry
Topoisomerase is an essential enzyme which regulates the topological state of DNA supercoils during replication and transcription. Topoisomerases cleave either one or two DNA strands and then re-join the cleaved strands after passing the intact strand or
Madhurima Dutta, Somnath Mandal
doaj  

Crystallization and preliminary crystallographic analysis of the DNA gyrase B protein from B-stearothermophilus [PDF]

, 1996
DNA gyrase B (GyrB) from B. stearothermophilus has been crystallized in the presence of the non-hydrolyzable ATP analogue, 5'-adenylpl-beta-gamma-imidodiphosphate (ADPNP), by the dialysis method.
Brannigan, J A, Subramanya, H S, Tsai, F T F, Wigley, D B, Wilkinson, A J   +4 more
core   +2 more sources