Results 81 to 90 of about 67,641 (348)
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 +50 more
core +1 more source
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 +2 more
wiley +1 more source
Methanosarcina acetivorans C2A topoisomerase IIIα, an archaeal enzyme with promiscuity in divalent cation dependence. [PDF]
PLoS ONE, 2011 Topoisomerases play a fundamental role in genome stability, DNA replication and repair. As a result, topoisomerases have served as therapeutic targets of interest in Eukarya and Bacteria, two of the three domains of life.
Raymond Morales +3 more
doaj +1 more source
Topoisomerase IIα represses transcription by enforcing promoter-proximal pausing
Cell Reports, 2021 Summary: Accumulation of topological stress in the form of DNA supercoiling is inherent to the advance of RNA polymerase II (Pol II) and needs to be resolved by DNA topoisomerases to sustain productive transcriptional elongation.
Andrés Herrero-Ruiz +6 more
doaj +1 more source
Differential stability of DNA crossovers in solution mediated by divalent cations [PDF]
, 2010 The assembly of DNA duplexes into higher-order structures plays a major role in many vital cellular functions such as recombination, chromatin packaging and gene regulation.
Timsit, Youri, Varnai, Peter
core +2 more sources
Advanced Science, EarlyView.Using iPSC‐derived motoneurons and postmortem tissue from FUS‐ALS patients, it is demonstrated that increased mitochondrial transcription leads to elevated cytosolic double‐stranded RNA (dsRNA) levels. This aberrant accumulation activates a RIG‐I–dependent innate immune response leading to neurodegeneration, which is amenable for FDA‐ and EMA‐approved ...
Marcel Naumann +26 more
wiley +1 more source
Role of Supercoiling and Topoisomerases in DNA Knotting
DNADNA knots are deleterious for living cells if not removed. Several theoretical and simulation approaches address the question of how topoisomerases select the intermolecular passages that preferentially lead to unknotting rather than to the knotting of ...
Jorge Cebrián +6 more
doaj +1 more source
Topoisomerase VI senses and exploits both DNA crossings and bends to facilitate strand passage
eLife, 2018 Type II topoisomerases manage DNA supercoiling and aid chromosome segregation using a complex, ATP-dependent duplex strand passage mechanism. Type IIB topoisomerases and their homologs support both archaeal/plant viability and meiotic recombination. Topo
Timothy J Wendorff, James M Berger
doaj +1 more source
Topoisomerases facilitate transcription of long genes linked to autism
Nature, 2013 Topoisomerases are expressed throughout the developing and adult brain and are mutated in some individuals with autism spectrum disorder (ASD). However, how topoisomerases are mechanistically connected to ASD is unknown.
Ian F. G. King +13 more
semanticscholar +1 more source
Advanced Science, EarlyView.Antibody drug conjugates deliver their cytotoxic anti‐tubulin or topoisomerase I inhibitor payloads to tumors through cancer cell receptor targeting. The released drug payloads induce cellular changes that interact with radiotherapy resulting in radiosensitization that improves cancer cell kill and stimulates anti‐tumor immune responses.
Jacqueline Lesperance +17 more
wiley +1 more source