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PCR-based cloning and immunocytological titration of infectious porcine endogenous retrovirus subgroup A and B.
- Source :
-
The Journal of general virology [J Gen Virol] 2002 Sep; Vol. 83 (Pt 9), pp. 2231-2240. - Publication Year :
- 2002
-
Abstract
- Two pig endogenous retroviruses (PERV), PERV-A and -B, productively infect human cells and are therefore considered to constitute a potential risk in pig-to-human xenotransplantation. A PCR-based cloning technique to isolate infectious PERV proviruses was established. Overlapping 3' half and 5' halves of PERV proviral genomes were amplified using DNA extracted from human 293 cells infected with PERV-A or -B. These clones were fused at a unique restriction site in the overlapping region and tested for their infectivity. Representative constructs possessed the same infectious properties as their parent isolates. We also developed a polyclonal anti-PERV serum by using recombinant PERV capsid protein derived from one of the infectious constructs as immunogen and established an immunocytological method for detection and titration of PERV infection. This detection method proved to be more sensitive than the current method of choice (transfer of MLV-lacZ vectors) for infectivity assessment of PERV. These findings should be considered for future characterization of PERV isolates.
- Subjects :
- Animals
Capsid biosynthesis
Capsid genetics
Capsid immunology
Cell Line
Cloning, Molecular
DNA, Viral analysis
DNA, Viral biosynthesis
Endogenous Retroviruses immunology
Endogenous Retroviruses pathogenicity
Humans
Kidney
Molecular Sequence Data
Proviruses immunology
Proviruses pathogenicity
Recombinant Proteins immunology
Recombination, Genetic
Terminal Repeat Sequences
Endogenous Retroviruses isolation & purification
Genes, Viral
Proviruses isolation & purification
Swine virology
Subjects
Details
- Language :
- English
- ISSN :
- 0022-1317
- Volume :
- 83
- Issue :
- Pt 9
- Database :
- MEDLINE
- Journal :
- The Journal of general virology
- Publication Type :
- Academic Journal
- Accession number :
- 12185278
- Full Text :
- https://doi.org/10.1099/0022-1317-83-9-2231