Serotype-independent detection of foot-and-mouth disease virus.
Foot-and-mouth disease virus (FMDV) causes a highly contagious vesicular disease affecting cloven hoofed animals and is considered the most economically important disease worldwide. Recent FMD outbreaks in Europe and Taiwan and the associated need for rapid diagnostic turnaround have identified limitations that exist in current diagnostic capabilities. To aid improved diagnosis, a serotype-independent FMDV antigen capture assay was developed using antibodies directed against a highly conserved cross-reactive protein fragment (1AB') located within the structural protein 1AB. Cattle sera raised against all 7 serotypes of FMDV bound purified 1AB' demonstrating its immunogenicity in infected animals. Polyclonal anti-1AB' antiserum was produced in chickens and applied as a universal detector of FMDV antigen. Western blot analysis and ELISA both demonstrated that anti-1AB' serum could recognize FMDV antigens independent of serotype. Two recently characterized anti-FMDV monoclonal antibodies were also evaluated for their ability to capture FMDV antigen independently of serotype. When used in combination with chicken anti-1AB' antibodies in an antigen capture ELISA format, all serotypes of FMDV were detected. These data represent the first demonstration of the use of serotype-independent FMDV antigen capture reagents which may enable the development of rapid laboratory based assays or perhaps more significantly, rapid field-based pen-side or point of entry border control diagnostic tests.
Muller
Janine D
JD
CSIRO Livestock Industries, Australian Animal Health Laboratory, 5 Portarlington Road, Geelong, Victoria 3220, Australia.
McEachern
Jennifer A
JA
Bossart
Katharine N
KN
Hansson
Eric
E
Yu
Meng
M
Clavijo
Alfonso
A
Hammond
Jef M
JM
Wang
Lin-Fa
LF
D000595:Amino Acid Sequence; D000818:Animals; D000914:Antibodies, Viral / Q000096:biosynthesis / Q000276:immunology*; D000918:Antibody Specificity; D000956:Antigens, Viral / Q000032:analysis* / Q000737:chemistry / Q000276:immunology; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology / Q000821:virology*; D004797:Enzyme-Linked Immunosorbent Assay; D005536:Foot-and-Mouth Disease / Q000276:immunology / Q000821:virology*; D029544:Foot-and-Mouth Disease Virus / Q000145:classification / Q000276:immunology / Q000302:isolation & purification*; D006168:Guinea Pigs; D008969:Molecular Sequence Data; D011817:Rabbits; D012703:Serotyping; D015678:Viral Structural Proteins / Q000032:analysis* / Q000737:chemistry / Q000276:immunology
D000914:Antibodies, Viral; D000956:Antigens, Viral; D015678:Viral Structural Proteins