MONOCLONAL ANTIBODY-BASED ENZYME-LINKED IMMUNOASSAYS FOR THE MEASUREMENT OF PALYTOXIN IN BIOLOGICAL SAMPLES

被引:46
作者
BIGNAMI, GS
RAYBOULD, TJG
SACHINVALA, ND
GROTHAUS, PG
SIMPSON, SB
LAZO, CB
BYRNES, JB
MOORE, RE
VANN, DC
机构
[1] HAWAIIAN SUGAR PLANTERS ASSOC,AIEA,HI 96701
[2] UNIV HAWAII,DEPT CHEM,HONOLULU,HI 96822
关键词
D O I
10.1016/0041-0101(92)90003-N
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
Mouse monoclonal and rabbit polyclonal antibodies were produce against conjugates of keyhole limpet hemocyanin and chemically defined palytoxin haptens. Palytoxin haptens were produced by derivatization of the primary amino group with sulfosuccinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxylate or succinimidyl 3-(2-pyridyldithio)propionate. Selected antibodies were used to develop five palytoxin-specific enzyme-linked immunoassay formats for the quantitation of palytoxin in biological matrices, including crude extracts of Palythoa tuberculosa. The formats developed include an indirect competitive inhibition enzyme-linked immunoassay, two types of direct competitive inhibition enzyme-linked immunoassays, and both indirect and direct sandwich enzyme-linked immunosorbent assays. The sandwich enzyme-linked immunosorbent assays are capable of detecting as little as 10 pg palytoxin per test, but may be subject to matrix interference. The direct competitive inhibition enzyme-linked immunoassays detect as little as 30 pg palytoxin per test with a total assay time of only 4 hr. The enzyme-linked immunoassays do not cross-react with the other marine toxins tested, but do cross-react with certain non-toxic, treated preparations of palytoxin. The enzyme-linked immunoassays were used to quantitate palytoxin in P. tuberculosa extracts and to monitor toxin isolation. These enzyme-linked immunoassay systems can substitute for the mouse bioassay of palytoxin, providing a rapid, sensitive, and accurate means of toxin detection.
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页码:687 / 700
页数:14
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