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Analysis of Simian Immunodeficiency Virus-specific CD8+ T-cells in Rhesus Macaques by Peptide-MHC-I Tetramer Staining
Published on: December 23, 2016
Cross-species retroviral transmission from macaques to human beings
James I Brooks1, Erling W Rud, Richard G Pilon
1Bureau of HIV/AIDS, STD, and TB, Centre for Infectious Disease Prevention and Control, Health Canada, Ottawa, ON K1A 0L2, Canada.
Abstract:
Cross-species transmission of simian foamy virus (SFV) to human beings from chimpanzees, baboons, and African green monkeys has been described. Although macaques are the non-human primate most often handled in research, human infection with SFV from macaques has not been reported. Two of 46 primate-facility workers tested positive for antibodies that reacted with an immunoblot that contained macaque foamy virus antigens. Phylogenetic assessment of a 96-bp fragment of amplified proviral DNA isolated from peripheral-blood mononuclear cells from one infected individual was consistent with SFV infection of macaque origin. Frequent use of macaques in biomedical research, and identification of persistent retroviral infection from macaques to human beings, could have implications for public-health policy and occupational health and safety.
Insights
Simian foamy virus (SFV) can transmit from macaques to humans, a finding supported by antibody and DNA evidence in primate facility workers. This discovery has significant public health and occupational safety implications.
Area of Science:
- Virology
- Primate Research
- Public Health
Background:
- Cross-species transmission of simian foamy virus (SFV) from non-human primates like chimpanzees, baboons, and African green monkeys to humans is documented.
- Macaques are extensively used in biomedical research, yet human SFV infection originating from macaques has not been previously reported.
Purpose of the Study:
- To investigate the potential for simian foamy virus (SFV) transmission from macaques to humans working in primate facilities.
- To identify and characterize SFV infection in human populations with occupational exposure to macaques.
Main Methods:
- Serological testing using immunoblots with macaque foamy virus antigens to detect antibodies in primate facility workers.
- Phylogenetic analysis of amplified proviral DNA from peripheral blood mononuclear cells of infected individuals.
Main Results:
- Two out of 46 primate facility workers tested positive for antibodies reactive to macaque foamy virus antigens.
- Phylogenetic analysis of a DNA fragment from one infected individual indicated SFV infection of macaque origin.
Conclusions:
- Human infection with simian foamy virus (SFV) originating from macaques is possible.
- The findings highlight potential public health and occupational safety concerns due to macaque-to-human SFV transmission in research settings.
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