Results 61 to 70 of about 79,794 (267)
Marine Drugs, 2009 We isolated a pol inhibitor from the cultured mycelia extract of a fungal strain isolated from natural salt from a sea salt pan in Australia, which was identified as 3-O-methylfunicone by spectroscopic analyses.
Fumio Sugawara +6 more
doaj +1 more source
Structural insights into the gating of DNA passage by the topoisomerase II DNA-gate. [PDF]
, 2018 Type IIA topoisomerases (Top2s) manipulate the handedness of DNA crossovers by introducing a transient and protein-linked double-strand break in one DNA duplex, termed the DNA-gate, whose opening allows another DNA segment to be transported through to ...
Chan, Nei-Li +7 more
core +2 more sources
Identification of a vaccinia virus gene encoding a type I DNA topoisomerase. [PDF]
Proceedings of the National Academy of Sciences, 1987 Vaccinia virus encapsidates a type I DNA topoisomerase (EC 5.99.1.2). The enzyme was purified from virus cores to apparent homogeneity, yielding a protein of Mr 32,000. The amino-terminal sequence of the isolated Mr 32,000 polypeptide was determined and used to map the putative structural gene for the vaccinia topoisomerase to the H7r open reading ...
S, Shuman, B, Moss
openaire +2 more sources
Molecular Oncology, EarlyView.Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee +8 more
wiley +1 more source
DNA topoisomerases as targets for anticancer drugs
Journal of Clinical Pharmacy and Therapeutics, 2001 DNA topoisomerases are essential enzymes that regulate the conformational changes in DNA topology by catalysing the concerted breakage and rejoining of DNA strands during normal cellular growth.
Z. Topçu
semanticscholar +1 more source
FEBS Open Bio, EarlyView.Chemotherapies such as doxorubicin can have toxic effects on healthy cardiovascular/heart tissue. Following up on a doxorubicin toxicity study in mice without tumors where nitrate water was cardioprotective (lessened toxicity), this study with tumor‐bearing mice undergoing doxorubicin treatment showed no negative effect of nitrate and nitrite on drug ...
Rama D. Yammani +7 more
wiley +1 more source
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 +6 more
wiley +1 more source
In vitro investigating of anticancer activity of new 7-MEOTA-tacrine heterodimers
Journal of Enzyme Inhibition and Medicinal Chemistry, 2019 A combination of biochemical, biophysical and biological techniques was used to study calf thymus DNA interaction with newly synthesized 7-MEOTA-tacrine thiourea 12–17 and urea heterodimers 18–22, and to measure interference with type I and II ...
Jana Janockova +16 more
doaj +1 more source
A nucleotide resolution map of Top2-linked DNA breaks in the yeast and human genome [PDF]
, 2019 DNA topoisomerases are required to resolve DNA topological stress. Despite this essential role, abortive topoisomerase activity generates aberrant protein-linked DNA breaks, jeopardising genome stability.
Allison, Rachal M +5 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 +3 more
wiley +1 more source