Related Experiment Videos
Orthopoxvirus strains defective in surface antigen induction
The Journal of General Virology
|July 1, 1979
Summary
This study investigated viral antigen induction in various poxviruses. Certain vaccinia, variola, cowpox, and monkeypox virus strains, especially white variants, failed to induce a specific early surface antigen.
Area of Science:
- Virology
- Immunology
- Cell Biology
Background:
- Poxviruses, including vaccinia, variola, monkeypox, and cowpox, are known for their complex interactions with host cells.
- The induction of specific viral antigens on infected cell surfaces is a key aspect of viral pathogenesis and host immune response.
- Understanding these antigen expression patterns can aid in differentiating viral strains and understanding viral evolution.
Purpose of the Study:
- To investigate the capacity of various poxvirus strains to induce a specific early antigen on the surface of infected cells.
- To determine if specific viral strains or variants, such as whitepox, white variants of cowpox and monkeypox, and certain variola strains, differ in their antigen-inducing capabilities.
- To correlate variations in virus strains with the loss of antigen-inducing capacity.
Main Methods:
- Examination of multiple poxvirus strains: vaccinia, variola, whitepox, monkeypox, and cowpox.
- Detection of a specific early antigen on the surface of infected host cells.
- Comparative analysis of antigen induction across different viral strains and variants.
Main Results:
- The Elstree strain of vaccinia virus did not induce the specific early antigen.
- Two strains of variola minor also lacked the capacity to induce this antigen.
- White variants of cowpox and monkeypox viruses, as well as whitepox viruses, were unable to induce the antigen.
- A consistent loss of antigen-inducing capacity was observed in white variants derived from parent cowpox and monkeypox viruses.
Conclusions:
- The ability to induce a specific early surface antigen is not universal across all poxvirus strains.
- Certain viral strains and variants, particularly white variants and some variola minor strains, are deficient in inducing this particular antigen.
- The loss of antigen-inducing capacity appears to be a characteristic associated with specific viral variations, such as the development of white variants.