Results 101 to 110 of about 17,370 (252)

TDP1/TOP1 ratio as a promising indicator for the response of small cell lung cancer to topotecan [PDF]

open access: yes, 2014
BACKGROUND AND OBJECTIVE Small cell lung cancer (SCLC) is one of the most challenging tumors to treat due to high proliferation rate, early metastatic dissemination and rapid development of chemotherapy resistance.
El-Khamisy, Sherif F   +3 more
core   +3 more sources

Polyhedral Oligomeric Silsesquioxane Based Material for Tumor Heterogeneity MR Visualization and Precise Treatment

open access: yesSusMat, EarlyView.
ABSTRACT Malignant tumors whose mortality rates up to 97% possess high heterogeneity that leads to rapid growth, strong invasive capability, and low drug sensitivity. Quantitative magnetic resonance imaging enables direct visualization of tumors. However, gadolinium‐based contrast agents used in clinical practice have significant drawbacks of short ...
Xiaochuan Geng   +13 more
wiley   +1 more source

Inhibitory action of exogenous cardiolipin on the bacterial type i and ii dna topoisomerases in vitro

open access: yesТонкие химические технологии, 2012
The influence of empty liposomes composed of cardiolipin (lipid which is a component of the bacterial cytoplasmic membrane and eukaryotic internal mitochondrial membrane) on Escherichia coli topoisomerase I and DNA gyrase (topoisomerase II) in vitro was ...
Yu. L. Mikulovich   +3 more
doaj  

Not only the top: Type I topoisomerases function in multiple tissues and organs development in plants

open access: yesJournal of Advanced Research
Background: DNA topoisomerases (TOPs) are essential components in a diverse range of biological processes including DNA replication, transcription and genome integrity.
Hao Zhang   +7 more
doaj   +1 more source

Deciphering diverse cell‐death patterns to predict the prognosis and potential therapy target of hepatocellular carcinoma patients

open access: yesVIEW, EarlyView.
Abstract Ninety percent of all primary liver malignancies are hepatocellular carcinomas (HCC), making liver cancer the third most common cause of cancer‐associated mortality. Different patterns of programmed cell death (PCD) are crucial for the survival of tumors, and they might serve as a prognostic marker for HCC.
Lin Ding   +10 more
wiley   +1 more source

Expression of the type I DNA topoisomerase gene in adenovirus-5 infected human cells

open access: yesNucleic Acids Research, 1990
The amount of topoisomerase I specific mRNA increases three- to fivefold during the early phase of infection of HeLa cells with adenovirus-5. The observed increase in specific mRNA is mainly due to an increased rate of transcription of the gene. In human 293 cells, which constitutively express the viral E1A and E1B genes, we determined an elevated ...
H, Romig, A, Richter
openaire   +3 more sources

Targeting PRMTs Creates Vulnerability of DNA Double‐Stand Break Repair Pathways, and Potentiates Chemotherapy Efficacy in TNBC

open access: yesCancer Science, EarlyView.
Our work makes the proof of concept that there is a clinical benefit to target both PRMT1 and PRMT5 to maximize the anti‐tumoral effect of chemotherapy in triple negative breast cancer. ABSTRACT Patients with triple‐negative breast cancer (ER−, PR−, and HER2−) are routinely treated with chemotherapies that induce DNA damage.
Charlène Thiebaut   +13 more
wiley   +1 more source

Proteostasis of organelles in aging and disease

open access: yesThe FEBS Journal, EarlyView.
Cells rely on regulated proteostasis mechanisms to keep their internal compartments functioning properly. When these mechanisms fail, damaged proteins accumulate, disrupting organelles, such as the nucleus, mitochondria, endoplasmic reticulum, Golgi, and lysosomes, as well as membraneless organelles, such as stress granules, processing bodies, the ...
Yara Nabawi   +5 more
wiley   +1 more source

Common Hematologic Emergencies—Acute Promyelocytic Leukemia and Microangiopathic Hemolytic Anemias—A Pivotal Role of Clinical Laboratory

open access: yesInternational Journal of Laboratory Hematology, EarlyView.
ABSTRACT Hematologic emergencies are urgent health conditions which result in significant mortality and morbidity unless timely therapeutic measures are taken. Therapeutic success depends on their timely and accurate recognition by hematology laboratory services.
Ganna Shestakova   +2 more
wiley   +1 more source

Typhoid Toxin of Salmonella enterica Induces ISG15 Responses Mediating Host Cell Survival and Counteracting Intracellular Infection

open access: yesMolecular Microbiology, EarlyView.
Toxigenic Salmonella enterica exocytose the typhoid toxin during infection causing host cell DNA damage, which activates a Type‐1 Interferon‐like response characterised by interferon‐stimulated gene 15 (ISG15) expression. ISG15 was required for host cell survival during Interferon responses and suppressed intracellular growth of Salmonella. Thus, ISG15
Daniel S. Stark   +11 more
wiley   +1 more source

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