Related Experiment Videos
Leupeptin inhibits retrovirus infection in mouse fibroblasts
Journal of Virology
|December 1, 1983
Abstract:
The protease inhibitor leupeptin was shown to inhibit retrovirus infection in mouse fibroblasts at a step shortly after internalization of the virus particles. The inhibited step most likely was the passage of virus particles through the lysosomes or other acid vesicles. Leupeptin was also shown to inhibit degradation of virus particles in the lysosomes. The results are discussed with respect to the involvement of proteases in the infectious route.
Insights
The protease inhibitor leupeptin blocks retrovirus infection in mouse cells by preventing virus passage through lysosomes. This suggests proteases are crucial for the retroviral infectious route.
Area of Science:
- Virology
- Cell Biology
- Biochemistry
Background:
- Retrovirus infection is a complex process involving multiple cellular steps.
- The role of cellular proteases in the retroviral lifecycle is not fully understood.
Purpose of the Study:
- To investigate the effect of the protease inhibitor leupeptin on retrovirus infection.
- To identify the specific stage of infection inhibited by leupeptin.
Main Methods:
- Treatment of mouse fibroblasts with leupeptin.
- Monitoring retrovirus infection and particle degradation.
Main Results:
- Leupeptin significantly inhibited retrovirus infection in mouse fibroblasts.
- The inhibition occurred shortly after virus particle internalization.
- Leupeptin also inhibited the degradation of virus particles within lysosomes.
Conclusions:
- Leupeptin's inhibitory effect points to a critical role for proteases in lysosomal trafficking of retroviruses.
- The findings suggest that proteases are involved in the infectious route of retroviruses.