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| Menezes,Caroline Anunciação; Gonçalves,Danielle Silva; Amianti,Jackeline; Fernandes,Irene; Taddei,Carla Romano; Koga,Paula Célia Mariko; Trabulsi,Luiz Rachid; Martinez,Marina Baquerizo; Piazza,Roxane Maria Fontes. |
| A capture enzyme-linked immunosorbent assay (ELISA), which detects LT-I toxin produced by enterotoxigenic Escherichia coli strains, has beendeveloped. This capture assay was performed using the IgG enriched fraction of anti-LT-I antiserum and IgG2b anti-LT-I monoclonal antibody and allowed a clear distinction between E. coli LT-I - producing and non-producing strains. The estimated accuracy of the assay is 78% for sensitivity, 94% for specificity and 92% for efficiency. Thus, the capture immunoassayis a sensitive tool for detection of E. coli, which produces heat-labile enterotoxin, and is suitable for use in clinical laboratories and epidemiological surveys in developing world. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Detection; Polyclonal antibody; Monoclonal antibody; Thermo-labile toxin; E. coli. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500004 |
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| Koga,Paula Célia Mariko; Menezes,Caroline Anunciação; Lima,Flávia Afonso; Nara,Júlia Mitico; Magalhães,Caroline Arantes; Cianciarullo,Aurora Marques; Ferreira-Júnior,Jorge Mario da Costa; Trabulsi,Luiz Rachid; Mendes-Ledesma,Meire Roberta Bresciani; Piazza,Roxane Maria Fontes. |
| Intimins are outer membrane proteins expressed by enteric bacterial pathogens capable of inducing intestinal attachment-and-effacement lesion (A/E). Through immunoblotting, immunofluorescence, flow citometry and immunogold we observed that the obtained polyclonal antibody against conserved intimin region recognizes the different intimin subtypes and suggests that it can be used as a tool for EPEC and EHEC detection. Besides, immuno-dot assay seems to be a possible alternative as a capture method. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intimin; Phenotypical analysis; Polyclonal antibody; EPEC; EHEC. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500002 |
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| Zhang,P.; Wang,C.T.; Yan,F.; Gou,L.; Tong,A.P.; Cai,F.; Li,Q.; Deng,H.X.; Wei,Y.Q.. |
| Mouse PNAS-4 (mPNAS-4) has 96% identity with human PNAS-4 (hPNAS-4) in primary sequence and has been reported to be involved in the apoptotic response to DNA damage. However, there have been no studies reported of the biological functions of mPNAS-4. In studies conducted by our group (unpublished data), it was interesting to note that overexpression of mPNAS-4 promoted apoptotic death in Lewis lung carcinoma cells (LL2) and colon carcinoma cells (CT26) of mice both in vitro and in vivo. In our studies, mPNAS-4 was cloned into the pGEX-6P-1 vector with GST tag at N-terminal in Escherichia coli strain BL21(DE3). The soluble and insoluble expression of recombinant protein mPNAS-4 (rmPNAS-4) was temperature-dependent. The majority of rmPNAS-4 was insoluble at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anti-mPNAS-4; Polyclonal antibody; Apoptosis-related protein family; One-step affinity purification. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000600012 |
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| Wang,G.; Zuo,X.; Jiang,L.; Wang,K.; Wei,X.; Zhang,B.; Xiao,X.. |
| Myocardial ischemic preconditioning up-regulated protein 1 (Mipu1), a novel zinc finger protein, was originally cloned using bioinformatic analysis and 5' RACE technology of rat heart after a transient myocardial ischemia/reperfusion procedure in our laboratory. In order to investigate the functions of Mipu1, the recombinant prokaryotic expression vector pQE31-Mipu1 was constructed and transformed into Escherichia coli M15(pREP4), and Mipu1-6His fusion protein was expressed and purified. The identity of the purified protein was confirmed by mass spectrometry. The molecular mass of the Mipu1 protein was 70.03779 kDa. The fusion protein was intracutaneously injected to immunize New Zealand rabbits to produce a polyclonal antibody. The antibody titer was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mipu1; Purification; Expression; Polyclonal antibody. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000100007 |
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