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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Interference with p53 functions in human viral infections, a target for novel antiviral strategies?
Pedro A Lazo1, Claudio R Santos
1Experimental Therapeutics and Translational Oncology Program, Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC) - Universidad de Salamanca, Salamanca, Spain. pedro.lazo@usal.es.
Abstract:
Viral infections cause a major stress in host cells. The cellular responses to stress are mediated by p53, which by deregulation of cell cycle and apoptosis, may also be part of the host cell reaction to fight infections. Therefore, during evolutionary viral adaptation to host organisms, viruses have developed strategies to manipulate host cell p53 dependent pathways to facilitate their viral life cycles. Thus, interference with p53 function is an important component in viral pathogenesis. Many viruses have proteins that directly affect p53, whereas others alter the regulation of p53 in an indirect manner, mediated by Hdm2 or Akt, or induction of interferon. Rescue of p53 activity is becoming an area of therapeutic development in oncology. It might be feasible that manipulation of p53 mediated responses can become a therapeutic option to limit viral replication or dissemination. In this report, the mechanisms by which viral proteins manipulate p53 responses are reviewed, and it is proposed that a pharmacological rescue of p53 functions might help to control viral infections.
Insights
Viruses manipulate host cell p53 pathways to replicate. Restoring p53 function could be a novel therapeutic strategy to combat viral infections and pathogenesis.
Area of Science:
- Virology
- Molecular Biology
- Cellular Biology
Background:
- Viral infections induce cellular stress responses.
- The p53 protein regulates cell cycle and apoptosis, crucial for host defense against pathogens.
- Viruses have evolved mechanisms to evade or subvert p53-mediated antiviral activities.
Purpose of the Study:
- To review how viral proteins interfere with p53 pathways.
- To explore the potential of p53 reactivation as an antiviral therapy.
Main Methods:
- Literature review of viral manipulation of p53.
- Analysis of viral protein interactions with p53 and its regulators (Hdm2, Akt).
- Discussion of interferon-mediated pathways affecting p53.
Main Results:
- Viruses employ direct and indirect strategies to inhibit p53 function.
- Viral interference with p53 is a key aspect of viral pathogenesis.
- Oncological p53 reactivation strategies may be applicable to viral infections.
Conclusions:
- Viral manipulation of p53 is essential for viral replication and pathogenesis.
- Pharmacological rescue of p53 function presents a promising therapeutic avenue for controlling viral infections.
- Targeting p53 could limit viral spread and disease progression.
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