Sirna
Mostrando 25-36 de 384 artigos, teses e dissertações.
-
25. PCI-24781 down-regulates EZH2 expression and then promotes glioma apoptosis by suppressing the PIK3K/Akt/mTOR pathway
PCI-24781 is a novel histone deacetylase inhibitor that inhibits tumor proliferation and promotes cell apoptosis. However, it is unclear whether PCI-24781 inhibits Enhancer of Zeste 2 (EZH2) expression in malignant gliomas. In this work, three glioma cell lines were incubated with various concentrations of PCI-24781 (0, 0.25, 0.5, 1, 2.5 and 5 M) and analyze
Genet. Mol. Biol.. Publicado em: 21/10/2014
-
26. A combination of STI571 and BCR-ABL1 siRNA with overexpressed p15INK4B induced enhanced proliferation inhibition and apoptosis in chronic myeloid leukemia
p15INK4B, a cyclin-dependent kinase inhibitor, has been recognized as a tumor suppressor. Loss of or methylation of the p15INK4B gene in chronic myeloid leukemia (CML) cells enhances myeloid progenitor formation from common myeloid progenitors. Therefore, we examined the effects of overexpressed p15INK4B on proliferation and apoptosis of CML cells. Overexpre
Braz J Med Biol Res. Publicado em: 14/10/2014
-
27. RNA interference inhibits herpes simplex virus type 1 isolated from saliva samples and mucocutaneous lesions
The aim of this study was to evaluate the use of RNA interference to inhibit herpes simplex virus type-1 replication in vitro. For herpes simplex virus type-1 gene silencing, three different small interfering RNAs (siRNAs) targeting the herpes simplex virus type-1 UL39 gene (sequence si-UL 39-1, si-UL 39-2, and si-UL 39-3) were used, which encode the large s
Braz J Infect Dis. Publicado em: 2014-08
-
28. Downregulation of survivin by siRNA inhibits invasion and promotes apoptosis in neuroblastoma SH-SY5Y cells
Neuroblastoma is a solid tumor that occurs mainly in children. Malignant neuroblastomas have a poor prognosis because conventional chemotherapeutic agents are not very effective. Survivin, a member of the inhibitor of the apoptosis protein family, plays a significant role in cell division, inhibition of apoptosis, and promotion of cell proliferation and inva
Braz J Med Biol Res. Publicado em: 23/05/2014
-
29. Upregulation of SOCS-1 by Nutlin-3 in acute myeloid leukemia cells but not in primary normal cells
OBJECTIVE: It has been shown that SOCS-1 plays an important role in the proper control of cytokine/growth factor responses and acts as a tumor suppressor in acute myeloid leukemias. Therefore, the objective of the present study was to evaluate the in vitro effect of treatment with Nutlin-3, a small molecule inhibitor of the MDM2/p53 interaction, on the expr
Clinics. Publicado em: 2014-01
-
30. Adenovirus-mediated siRNA targeting TNF-α and overexpression of bone morphogenetic protein-2 promotes early osteoblast differentiation on a cell model of Ti particle-induced inflammatory response in vitro
Wear particles are phagocytosed by macrophages and other inflammatory cells, resulting in cellular activation and release of proinflammatory factors, which cause periprosthetic osteolysis and subsequent aseptic loosening, the most common causes of total joint arthroplasty failure. During this pathological process, tumor necrosis factor-alpha (TNF-α) plays a
Braz J Med Biol Res. Publicado em: 2013-10
-
31. Histone demethylase retinoblastoma binding protein 2 regulates the expression of α-smooth muscle actin and vimentin in cirrhotic livers
Liver cirrhosis is one of the most common diseases of Chinese patients. Herein, we report the high expression of a newly identified histone 3 lysine 4 demethylase, retinoblastoma binding protein 2 (RBP2), and its role in liver cirrhosis in humans. The siRNA knockdown of RBP2 expression in hepatic stellate cells (HSCs) reduced levels of α-smooth muscle actin
Braz J Med Biol Res. Publicado em: 06/09/2013
-
32. Effect of Wnt/β-catenin and NF-κB signaling pathways on mucus secretion with hypertonicity in 16HBE cells
This study aimed at identifying the molecular mechanisms and effects of hypertonicity on mucin5AC (MUC5AC) expression in airway epithelial cells for which immortalized human bronchial epithelial (16HBE) cells were cultured in 600 mOsm/L hypertonic medium for different times in vitro. Proteins of MUC5AC and β-catenin, Cyclin D1, NF-κB p65 were detected by e
Braz. arch. biol. technol.. Publicado em: 2013-08
-
33. Sistemas de liberação de geleificação in situ para veiculação de siRNA: desenvolvimento, caracterização e estudos in vitro e in vivo em modelo animal / In situ gelling delivery systems for siRNA: development, characterization and studies in vitro and in vivo in animal model
A comprovação de que siRNA pode ser usado para supressão de genes em diferentes células de mamíferos atraiu grande atenção como nova possibilidade de tratamento para diversas doenças. No entanto, para aplicação terapêutica de siRNA é necessário o desenvolvimento de um sistema de liberação efetivo e não tóxico, que permita a captação celula
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2012
-
34. Functional study of gene PAWR/Par-4 (Prostate apoptosis response-4) in normal and cancer breast cells / Estudo funcional do gene PAWR/Par-4 (Prostate apoptosis responde-4) em células de mama normais e tumorais
O câncer de mama é o tumor mais incidente entre as mulheres no mundo. Assim como em outros tumores, a tumorigênese nas mamas é um processo complexo resultante da combinação de fatores genéticos e ambientais que dirigem a transformação das células normais em células malignas. O gene PAWR, conhecido como PAR-4 (Prostatic apoptosis response-4) foi pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/06/2012
-
35. Desenvolvimento e caracterização de sistemas de liberação tópica a base de cristais líquidos para veiculação de siRNA na terapia gênica / Development and characterization of topical delivery systems based on liquid crystals for siRNA in gene therapy
A terapia gênica por interferência de RNA (RNAi) trata-se de um processo de silenciamento pós-transcricional capaz de suprimir a expressão de um determinado gene. A RNAi é uma proposta terapêutica promissora para o tratamento de muitas doenças severas que ainda não possuem cura ou terapias bem definidas. Porém, é necessário o desenvolvimento de si
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/05/2012
-
36. Avaliação do Fator Induzido Pela Hipoxia 1-Alfa no Retinoblastoma
Introdução: o Retinoblastoma é o tumor intra-ocular maligno mais comum na infância. Pacientes com tumores avançados, em geral, respondem mal ao tratamento. Hipóxia é um fenômeno comum aos tumores avançados e está relacionada à resistência à quimio e radioterapia convencional. As células e os tecidos tumorais adaptam-se ao microambiente hipóxic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/03/2012