Quantification of antibody (IgY) titers in hen eggs following immunization and their use in detecting cell surface molecules on nitrocellulose membranes.
HLA-A*0201 alpha chain and beta2m were expressed from a prokaryotic system, and after refolding and purification, the alpha chain and beta2m were used to immunize eight laying hens. The titer of egg yolk antibody against alpha chain increased from 10(2) to 10(5.3) The titer of egg yolk antibody against beta2m increased from 10(1) to 10(4.7). The extent of titer increase is similar between the two antigens. An average of 135 mg purified polyclonal antibody (IgY) can be easily obtained from one egg yolk. The use of egg collection rather than serum collection is compatible with modern animal protection regulations. An average of 28 eggs were obtained from a laying hen every month, with a total amount of 3780 mg immunoglobulin extracted from one immunized hen every month, which would be equivalent to 630 mL of serum or 1260 mL of blood per month. Chickens are an optimal host for the production of polyclonal antibodies with high titer and high yield. Purified IgY was labeled with horseradish peroxidase and reacted with PBMC on nitrocellulose membranes indicating that the antibody can bind to the native conformation of class I HLA molecule on PBMC.
Ruan
Guang-Ping
GP
Institute of Molecular Immunology, Southern Medical University, Guangzhou, PR China.
Ma
Li
L
Meng
Xiao-Jing
XJ
Meng
Min-Jie
MJ
Wang
Xiao-Ning
XN
Lin
Ying
Y
Wu
Zheng-Qiang
ZQ
He
Xiao-Wei
XW
Wang
Ju-Fang
JF
Zhu
Yong
Y
D000818:Animals; D002460:Cell Line; D002645:Chickens / Q000276:immunology*; D003101:Collodion; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D005434:Flow Cytometry; D015234:HLA-A Antigens / Q000276:immunology*; D015789:HLA-A2 Antigen; D006801:Humans; D007114:Immunization; D015151:Immunoblotting; D007136:Immunoglobulins / Q000032:analysis* / Q000276:immunology*; D010063:Ovum / Q000276:immunology*; D017186:Titrimetry
D015234:HLA-A Antigens; C435939:HLA-A*02:01 antigen; D015789:HLA-A2 Antigen; C016512:IgY; D007136:Immunoglobulins; D003101:Collodion