Related Experiment Video
Updated: May 25, 2025
11:28
Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus
Published on: October 7, 2011
10.9K
Characterization of Human Cytomegalovirus (HCMV) Long Non-Coding RNA1.2 During Lytic Replication.
Salomé Manska1, Andrew Hagemann1, Janna Magana1
1Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, Reno, NV 89557, USA.
Viruses
|February 26, 2025
Summary
Human cytomegalovirus (HCMV) long non-coding RNA 1.2 (RNA1.2) is not essential for lytic replication. However, RNA1.2 interacts with host proteins involved in immunity and cell cycle, suggesting a role in host response modulation.
Area of Science:
- Virology
- Molecular Biology
- Immunology
Background:
- Human cytomegalovirus (HCMV) produces abundant long non-coding RNAs (lncRNAs) during lytic replication.
- Viral lncRNAs can modulate host processes and are crucial for viral production.
- HCMV encodes four lncRNAs, including RNA1.2, whose functions are largely unknown.
Purpose of the Study:
- To investigate the function of HCMV RNA1.2 during lytic replication.
- To identify cellular and viral protein binding partners of RNA1.2.
Main Methods:
- Generation of HCMV mutants with full or partial deletion of the RNA1.2 locus.
- Assessment of viral DNA synthesis, gene expression, protein production, and progeny generation in mutant viruses.
- Liquid chromatography-mass spectrometry (LC-MS) to identify RNA1.2-associated proteins.
Main Results:
- HCMV RNA1.2 deletion mutants exhibited no defects in viral replication in permissive fibroblasts.
- LC-MS identified numerous cellular proteins associated with RNA1.2.
- Associated proteins were primarily involved in innate immune response, mitochondrial processes, and cell cycle regulation.
Conclusions:
- HCMV RNA1.2 is dispensable for lytic viral replication.
- RNA1.2 may play a significant role in modulating the host response during HCMV infection through its interactions with cellular proteins.
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