Improving Broad Specificity Hapten Recognition with Protein Engineering
摘要:
Sulfa antibiotics (sulfonamides) are derivatives of p-aminobenzenesulfonamide that are widely used in veterinary medicine. Foods derived from treated animals may be contaminated with these drugs. However, current immunobased sulfonamide detection methods are unfit for screening of products because they are either too insensitive or specific for a few compounds only. An immunoassay capable of detecting all sulfas in a single reaction would be ideal for screening. For development of a binder capable of binding all sulfas, a protein engineering approach was chosen and the properties of monoclonal antibody 27G3 were improved with mutagenesis followed by selection with phage display. Several different mutant antibodies were isolated. The cross-reaction profile of the best mutant antibody was significantly improved over that of the wild-type antibody: it was capable of binding 9 of the tested 13 sulfonamides within a narrow concentration range and also bound the rest of the sulfas, albeit within a wider concentration range.
[EN] HALOFUGINONE ANALOGS FOR INHIBITION OF TRNA SYNTHETASES AND USES THEREOF<br/>[FR] ANALOGUES D'HALOFUGINONE POUR L'INHIBITION D'ARNT SYNTHÉTASES ET LEURS UTILISATIONS
申请人:HARVARD COLLEGE
公开号:WO2010019210A3
公开(公告)日:2010-05-14
HALOFUGINONE ANALOGS FOR INHIBITION OF TRNA SYNTHETASES AND USES THEREOF
申请人:Keller Tracy
公开号:US20110263532A1
公开(公告)日:2011-10-27
The present invention provides novel analogs and derivatives of halofuginone. The invention also provides pharmaceutical and cosmetic compositions thereof and methods for using halofuginone analogs in treating chronic inflammatory diseases, autoimmune diseases, dry eye syndrome, fibrosis, scar formation, angiogenesis, viral infections, ischemic damage, transplant and implant rejection, neurodegenerative diseases, and cosmetic applications.
US9284297B2
申请人:——
公开号:US9284297B2
公开(公告)日:2016-03-15
Improving Broad Specificity Hapten Recognition with Protein Engineering
Sulfa antibiotics (sulfonamides) are derivatives of p-aminobenzenesulfonamide that are widely used in veterinary medicine. Foods derived from treated animals may be contaminated with these drugs. However, current immunobased sulfonamide detection methods are unfit for screening of products because they are either too insensitive or specific for a few compounds only. An immunoassay capable of detecting all sulfas in a single reaction would be ideal for screening. For development of a binder capable of binding all sulfas, a protein engineering approach was chosen and the properties of monoclonal antibody 27G3 were improved with mutagenesis followed by selection with phage display. Several different mutant antibodies were isolated. The cross-reaction profile of the best mutant antibody was significantly improved over that of the wild-type antibody: it was capable of binding 9 of the tested 13 sulfonamides within a narrow concentration range and also bound the rest of the sulfas, albeit within a wider concentration range.