TY - JOUR
T1 - 2,4,6-Trinitrotoluene detection using recombinant antibodies
AU - Goldman, Ellen R.
AU - Hayhurst, Andrew
AU - Lingerfelt, Brian M.
AU - Iverson, Brent L.
AU - Georgiou, George
AU - Anderson, George P.
PY - 2003/6
Y1 - 2003/6
N2 - The ability to detect low levels of 2,4,6-trinitrotoluene (TNT) in aqueous samples is important due to the toxicity of both TNT and its breakdown products. We have been characterizing recombinant anti-TNT antibodies isolated from the Griffin library of phage displayed scFvs by selection for binders to the TNT-surrogate 2,4,6-trinitrobenzene (TNB) coupled to the protein bovine serum albumin. Two candidate antibody fragments, TNB1 and TNB2, were isolated and evaluated by ELISA for their ability to bind to TNB coupled to the protein ovalbumin. Competition ELISA was then used to demonstrate antibody fragment binding to TNT in solution and to examine cross-reactivity towards several TNT-related compounds and other explosives. Both recombinant antibody fragments were incorporated into a continuous flow assay for the detection of TNT. TNB2, the best single chain antibody, showed a limit of detection of 1 ng ml-1, comparable to a commercially available anti-TNT antibody in the same assay format.
AB - The ability to detect low levels of 2,4,6-trinitrotoluene (TNT) in aqueous samples is important due to the toxicity of both TNT and its breakdown products. We have been characterizing recombinant anti-TNT antibodies isolated from the Griffin library of phage displayed scFvs by selection for binders to the TNT-surrogate 2,4,6-trinitrobenzene (TNB) coupled to the protein bovine serum albumin. Two candidate antibody fragments, TNB1 and TNB2, were isolated and evaluated by ELISA for their ability to bind to TNB coupled to the protein ovalbumin. Competition ELISA was then used to demonstrate antibody fragment binding to TNT in solution and to examine cross-reactivity towards several TNT-related compounds and other explosives. Both recombinant antibody fragments were incorporated into a continuous flow assay for the detection of TNT. TNB2, the best single chain antibody, showed a limit of detection of 1 ng ml-1, comparable to a commercially available anti-TNT antibody in the same assay format.
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U2 - 10.1039/b302012f
DO - 10.1039/b302012f
M3 - Article
C2 - 12833979
AN - SCOPUS:0037973264
VL - 5
SP - 380
EP - 383
JO - Environmental Sciences: Processes and Impacts
JF - Environmental Sciences: Processes and Impacts
SN - 2050-7887
IS - 3
ER -