A homogeneous immunoassay for the mycotoxin T-2 utilizing liposomes, monoclonal antibodies, and complement.
A homogeneous immunoassay for the mycotoxin T-2 utilizing liposomes, monoclonal antibodies, and complement.
复制标题
利用脂质体、单克隆抗体和补体对霉菌毒素 T-2 进行均相免疫测定。
DOI:
10.1016/0003-2697(87)90237-5
复制
发表时间:
1987
影响因子:
2.9
通讯作者:
Gaber,BP
中科院分区:
文献类型:
--
作者:
Ligler,FS;Bredehorst,R;Talebian,A;Shriver,LC;Hammer,CF;Sheridan,JP;Vogel,CW;Gaber,BP
The trichothecene mycotoxin T-2 is a fungal metabolite known to contaminate agricultural products and cause intoxication of humans and animals. We have developed a homogeneous competition inhibition assay for T-2 mycotoxin based on complement-mediated lysis of liposomes. The T-2 mycotoxin was converted to an acid chloride derivative, subsequently coupled to the amino group of phosphatidylethanolamine, and incorporated with the phospholipid into unilamellar liposomes. Carboxyfluorescein, which is self-quenched at high concentrations, was entrapped in the liposomes as a release marker. We used a monoclonal IgG1 antibody specific for T-2 mycotoxin and a polyclonal anti-mouse Ig as a secondary antibody since the anti-T-2 IgG1 does not activate complement. In the absence of free T-2, the liposomes were lysed within 30 min after the addition of complement, releasing carboxyfluorescein into the surrounding buffer. In the presence of free T-2 toxin, the binding of antibodies to the liposomes was reduced, causing a corresponding decrease in lysis. This assay proved to be sensitive to T-2 toxin levels as low as 2 ng, which is 10-fold more sensitive than the present enzyme immunoassay using the same antibodies.
登录
查看更多内容
影响因子:
2.9
作者:
Nordlund,JR;Schmidt,CF;Holloway,PW;Thompson,TE
通讯作者:
Thompson,TE
DOI:
10.1515/bchm2.1982.363.2.1437
发表时间:
1982
期刊:
Hoppe-Seyler's Zeitschrift fur physiologische Chemie
影响因子:
--
作者:
H. Peters;M. Dierich;K. Dose
通讯作者:
K. Dose
影响因子:
9.3
作者:
W. J. Litchfield;J. Freytag;M. Adamich
通讯作者:
M. Adamich
影响因子:
4.4
作者:
P. Fontelo;J. Beheler;D. Bunner;F. Chu
通讯作者:
F. Chu
影响因子:
2.2
作者:
K. Uemura;H. Hattori;N. Kitazawa;T. Taketomi
通讯作者:
T. Taketomi