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Isolation of T-cell tropic HTLV-III-like retrovirus from macaques
Abstract:
The isolation of a T-cell tropic retrovirus from three immunodeficient macaques and one macaque with lymphoma is described. The morphology, growth characteristics, and antigenic properties of this virus indicate that it is related to the causative agent of acquired immune deficiency syndrome in humans (HTLV-III or LAV). This virus is referred to as simian T-lymphotropic virus type III (STLV-III) of macaques. The existence of a cytopathic, T-cell tropic virus resembling HTLV-III in monkeys may facilitate study of disease induction and vaccine development in an animal model.
Insights
Researchers isolated a simian T-lymphotropic virus type III (STLV-III) from macaques with immune deficiency and lymphoma. This retrovirus is similar to human T-lymphotropic virus type III (HTLV-III), offering a potential animal model for AIDS research.
Area of Science:
- Veterinary Virology
- Primatology
- Immunology
Background:
- Acquired immune deficiency syndrome (AIDS) in humans is caused by human T-lymphotropic virus type III (HTLV-III).
- Understanding the origins and animal reservoirs of retroviruses is crucial for public health.
- Non-human primates are important models for studying human diseases.
Purpose of the Study:
- To report the isolation and initial characterization of a novel retrovirus from macaques.
- To investigate the relationship between this simian virus and human retroviruses.
- To establish a potential animal model for studying T-cell tropic viruses.
Main Methods:
- Isolation of a retrovirus from peripheral blood of affected macaques.
- Morphological analysis using electron microscopy.
- Characterization of growth kinetics in cell culture.
- Antigenic property assessment.
Main Results:
- A T-cell tropic retrovirus, designated simian T-lymphotropic virus type III (STLV-III), was successfully isolated from four macaques.
- The isolated STLV-III shares morphological, growth, and antigenic similarities with human T-lymphotropic virus type III (HTLV-III).
- The virus exhibited cytopathic effects in T-cells.
Conclusions:
- STLV-III is a novel retrovirus found in macaques that is closely related to HTLV-III.
- The discovery of STLV-III in macaques provides a valuable animal model for studying the pathogenesis of T-cell tropic retroviruses.
- This model may aid in the development of therapeutic strategies and vaccines for AIDS-related viruses.