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Registros recuperados: 2
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Evaluation of anti-Wnt/β-catenin signaling agents by pGL4-TOP transfected stable cells with a luciferase reporter system BJMBR
Chuang,K.A.; Lieu,C.H.; Tsai,W.J.; Wu,M.H.; Chen,Y.C.; Liao,J.F.; Wang,C.C.; Kuo,Y.C..
Refractory and relapsed leukemia is a major problem during cancer therapy, which is due to the aberrant activation of Wnt/β-catenin signaling pathway. Activation of this pathway is promoted by wingless (Wnt) proteins and induces co-activator β-catenin binding to lymphoid enhancer factor (LEF)/T-cell factor protein (TCF). To provide a convenient system for the screening of anti-Wnt/β-catenin agents, we designed a bi-functional pGL4-TOP reporter plasmid that contained 3X β-catenin/LEF/TCF binding sites and a selectable marker. After transfection and hygromycin B selection, HEK 293-TOP and Jurkat-TOP stable clones were established. The luciferase activity in the stable clone was enhanced by the recombinant Wnt-3A (rWnt-3A; 100-400 ng/mL) and GSK3β inhibitor...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cancer; Plasmids; Reporter assay; Screening; Wnt; Β-catenin.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001000003
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Genetic variations of EBV-LMP1 from nasopharyngeal carcinoma biopsies: potential loss of T cell epitopes BJMBR
Tang,Y.L.; Lu,J.H.; Cao,L.; Wu,M.H.; Peng,S.P.; Zhou,H.D.; Huang,C.; Yang,Y.X.; Zhou,Y.H.; Chen,Q.; Li,X.L.; Zhou,M.; Li,G.Y..
To find Epstein-Barr virus (EBV) strains with genetic variations of EBV latent membrane protein 1 (EBV-LMP1) from nasopharyngeal carcinoma (NPC), the full-length DNA of LMP1 genes from 21 NPC biopsies obtained in Hunan province in southern China was amplified and sequenced. Our sequences were compared to those previously reported by the Clustal V method. Results showed that all 21 sequences displayed two amino acid changes most frequently in LMP1 of CD4+ T cell epitopes at codons 144 (F®I, 21/21) and 212 (G®S, 19/21) or (G®N, 2/21). We also show that type A EBV strain is prevalent in the cases of NPC from Hunan province with a 30-bp 18/21 deletion, and we highlight that this deletion resulted in loss of one of the CD4+ T cell-restricted epitopes. The other...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic variation; Epitope; Immune recognition; Latent membrane protein 1; Tumorigenicity.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000200006
Registros recuperados: 2
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