Consulta: subjectFacets:"PTGS2"
Registros recuperados: 3
Data/hora: 02/06/2024 03:30:44

COX-2 gene expression and methylation profile in Sapajus apella as an experimental model for gastric adenocarcinoma
Provedor de dados: 74
Autores: Rosário Pinheiro,Danilo do; Harada,Maria Lucia; Rodriguez Burbano,Rommel Mario; Nascimento Borges,Barbara do.
Abstract Gastric cancer (GC) remains one of the main causes of cancer-related death worldwide. There are two distinct histological types of GC: diffuse and intestinal. The latter is characterized by the presence of pre-neoplastic lesions. One of the most frequently altered enzymes in intestinal GC is COX-2, an important lesion marker. This work aimed to study COX-2 methylation and expression in N-methyl-N-Nitrosurea (MNU)-induced intestinal GC in six Sapajus apella animals. The partial promoter sequence of S. apella COX-2 gene was obtained and used to identify transcription factors and cis-regulatory element binding sites. The COX-2 methylation pattern was assessed using Methylation-Specific PCR (MSP), and expression was analyzed by immunohistochemistry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PTGS2; Gene regulation; Animal model; Gastric cancer.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000300496

Modulation of the prostaglandin-endoperoxide synthase 2 gene expression by variant haplotypes: influence of the 3′-untranslated region
Provedor de dados: 56
Autores: Piranda,D.N.; Abreu,R.B.V.; Freitas-Alves,D.R.; de Carvalho,M.A.; Vianna-Jorge,R.
The inducible inflammatory enzyme cycloxigenase-2 is up-regulated in cancer, and favors tumor progression. Cycloxigenase-2 is encoded by the prostaglandin-endoperoxide synthase 2 (PTGS2) gene, which presents sequence variations in the promoter region (PR) and in the 3′-untranslated region (3′-UTR). Different PR (rs689465, rs689466, rs20417) and 3′-UTR (rs5275) variants were generated by site-directed mutagenesis, and combined in haplotypes to access expression levels using a reporter system (luciferase) in human cells (MCF-7 and HEK293FT). Luciferase activity did not differ significantly among PTGS2 PR constructs, except for pAAC (containing variant allele rs20417 C), with 40% less activity than pAAG (wild-type sequence) in MCF-7 cells (P&lt;0.01). Despite...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: COX-2; PTGS2; Haplotypes; Gene expression; MCF-7; HEK293FT.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000200602

Transcriptomic analysis of differential gene expression reveals an increase in COX2 levels during in vitro canine herpesvirus infection
Provedor de dados: 65
Autores: Kurissio,Jacqueline Kazue; Araújo Júnior,João Pessoa.
ABSTRACT: Canine herpesvirus (CaHV-1) affects canids worldwide, causing death in neonates and immunosuppressed hosts. Acute infection by CaHV-1 can cause reproductive, respiratory, and neurological problems in adult animals. Viral pathogenesis and host genes expressions during of CaHV-1infection are not clearly understood. In the present study, the transcriptome of canine kidney cell Mardin-Darby (MDCK) infected in vitro with canine herpesvirus was explored. For this, RNA sequencing (RNA-seq) of the samples in different moments during infection was carried out. Subsequently, the transcriptomic analysis genes related to cell activities and process involved to viral cycle infection were evaluated until 32h post-inoculation (pi). Among evaluated genes, was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Transcriptome; Herpesvirus; CaHV-1; PTGS2; COX2; Canine pathogen.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001000451