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Induction of interferon in AKR mice by murine leukaemia viruses
Abstract:
A high percentage of AKR mice develop spontaneous leukaemia which has shown to be associated with the early expression of ecotropic murine leukaemia virus (MuLV) and the subsequent expression of xenotropic as well as polytropic MuLVs. Generally, mice infected with any one of several groups of viruses, including MuLVs, have been shown to produce interferon (IF). However, we report here that AKR mice produce no IF, despite that fact that infectious, endogenous MuLV is expressed in these mice from birth.
Insights
AKR mice, prone to leukemia due to early murine leukemia virus (MuLV) expression, surprisingly do not produce interferon (IF). This lack of interferon occurs even though infectious MuLV is present from birth in these mice.
Area of Science:
- Immunology
- Virology
- Oncology
Background:
- Spontaneous leukemia is common in AKR mice.
- Leukemia development in AKR mice is linked to early murine leukemia virus (MuLV) expression.
- Interferon (IF) production is a typical immune response to viral infections in mice.
Purpose of the Study:
- To investigate interferon (IF) production in AKR mice with spontaneous leukemia.
- To determine if the presence of endogenous murine leukemia virus (MuLV) triggers an interferon response in AKR mice.
Main Methods:
- Monitoring AKR mice for spontaneous leukemia development.
- Assessing the expression of ecotropic, xenotropic, and polytropic murine leukemia viruses (MuLVs).
- Measuring interferon (IF) levels in AKR mice.
Main Results:
- AKR mice exhibit high rates of spontaneous leukemia.
- Early expression of ecotropic MuLV and subsequent expression of other MuLV types were confirmed.
- Despite infectious endogenous MuLV presence from birth, AKR mice showed no detectable interferon (IF) production.
Conclusions:
- AKR mice possess a unique defect in interferon (IF) production.
- This lack of interferon response may contribute to the high incidence of spontaneous leukemia in AKR mice.
- Further research is needed to understand the mechanisms behind this interferon deficiency.