Now showing items 1-10 of 194
Topoisomerase expression in oral squamous cell carcinoma: relationship with cancer stem cells profiles and lymph node metastasis
BACKGROUND: The relationship between predictive proteins and tumors presenting cancer stem cells (CSCs) profiles in oral tumors is still poorly understood. This study aims to identify the relationship between topoisomerases ...
Design and synthesis of peptides from bacterial ParE toxin as inhibitors of topoisomerases
(Elsevier France-editions Scientifiques Medicales Elsevier, 2012-08-01)
Toxin-antitoxin (TA) proteic systems encode a toxin and an antitoxin that regulate the growth and death of bacterial cells under various stress conditions. The ParE protein is a toxin that inhibits DNA gyrase activity and ...
Expressão de topoisomerase II alfa e de caspase-3 ativada em lesão intra-epitelial cervical escamosa de baixo grau
(Universidade Federal de São Paulo (UNIFESP), 2008-03-26)
Purpose: To evaluate the correlation between the expression of topoisomerase II alpha, active caspase-3 and infection with human papillomavirus in low-grade cervical intraepithelial lesion and in the normal cervix, and ...
Significance of topoisomerase III beta expression in breast ductal carcinomas: strong associations with disease-specific survival and metastasis
(W B SAUNDERS CO-ELSEVIER INC, 2010)
Topoisomerases are ubiquitous nuclear enzymes that regulate DNA structure in eukaryotic cells. The role of topoisomerase III beta, the newest member of the topoisomerase family, in the clinical outcome of breast cancer is ...
The Octahydroindene Carboxyl Substructure from Dihydrobetulinic Acid is Essential to Inhibit Topoisomerase IB from Leishmania donovani
(Soc Brasileira Quimica, 2016-03-01)
The dihydrobetulinic acid is a known competitive inhibitor of topoisomerase IB from Leishmania donovani, a validated target for developing new antileishmanial drugs. However, its binding mode and interaction pocket have ...
Topoisomerase II alpha Status in Renal Medullary Carcinoma: Immuno-Expression and Gene Copy Alterations of a Potential Target of Therapy
(Elsevier Science IncNew YorkEUA, 2009)
Peptides based on CcdB protein as novel inhibitors of bacterial topoisomerases
(Pergamon-Elsevier B.V. Ltd, 2008-12-01)
The ccd toxin-antitoxin system of the F plasmid encodes CcdB, a protein that poisons the essential Escherichia coli DNA gyrase, unique type IIA topoisomerase able to introduce negative supercoils into DNA. Based on CcdB ...
Measurement of drug-stabilized Topoisomerase II cleavage complexes by Flow Cytometry
The poisoning of Topoisomerase II (Top2) has been found to be useful as a therapeutic strategy for the treatment of several tumors. The mechanisms of these agents involves a drug-mediated stabilization of a Top2-DNA complex, ...
Peptides from yacg protein as inhibitors of DNA gyrase and human topoisomerase II alpha