Related Experiment Video
Updated: Jun 12, 2025
09:38
Identification of Nucleolar Factors During HIV-1 Replication Through Rev Immunoprecipitation and Mass Spectrometry
Published on: June 26, 2019
8.0K
The Nucleolus and Its Interactions with Viral Proteins Required for Successful Infection
José Manuel Ulloa-Aguilar1,2, Luis Herrera Moro Huitron1,3, Rocío Yazmin Benítez-Zeferino1,3
1Laboratorio de Virología Perinatal y Diseño Molecular de Antígenos y Biomarcadores, Departamento de Inmunobioquímica, Instituto Nacional de Perinatología, Mexico City 11000, Mexico.
Cells
|September 27, 2024
Summary
Nuclear bodies are essential cellular structures. Viruses hijack these nuclear bodies, altering their function to facilitate viral infection and replication.
Area of Science:
- Cell Biology
- Virology
- Molecular Biology
Background:
- Nuclear bodies are membrane-less structures within eukaryotic cells, acting as hubs for molecular processes.
- Key nuclear bodies include the nucleolus and Cajal bodies, crucial for RNA metabolism and gene regulation.
- These structures dynamically regulate vital cellular functions like transcription, cell cycle, and stress responses.
Purpose of the Study:
- To review the intricate interactions between viral proteins and nuclear bodies.
- To highlight the specific role of the nucleolus in RNA virus infections.
- To discuss the impact of viral proteins on cellular transcription and non-coding RNA dynamics.
Main Methods:
- Literature review of existing research on nuclear bodies and viral interactions.
- Focus on studies investigating the nucleolus's role in RNA virus replication.
- Analysis of mechanisms by which viral proteins influence cellular transcription and non-coding RNAs.
Main Results:
- Viral proteins are known to interact with nuclear bodies, altering their composition, dynamics, and functions.
- The nucleolus is a key site for RNA virus replication, with viral proteins significantly impacting its structure and function.
- Viral protein interactions can disrupt cellular transcription and affect the biogenesis or degradation of non-coding RNAs.
Conclusions:
- The interaction between viral and nuclear body proteins is critical for successful viral replication.
- Understanding these interactions, particularly with the nucleolus, offers insights into viral pathogenesis.
- Further research into these viral-host interactions may reveal novel therapeutic targets.
Related Concept Videos
01:10Retrovirus Life Cycles
45.7K
Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
45.7K
02:55The Nucleolus
8.7K
The nucleolus is the most prominent substructure of the nucleus. When it was first discovered, it was considered to be an isolated organelle that forms fibrils and granules. In 1931, the relationship between the nucleolus and chromosomes was first described by Heitz. He observed that the appearance and size of nucleolus varies depending on the stage of the cell cycle. He also noticed constricted regions on different chromosomes clustered together at definite cell cycle stages. These regions,...
8.7K
00:56Viral Structure
61.9K
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
61.9K
01:10Intracellular Movement of Viruses and Bacteria
2.8K
Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a...
2.8K
01:45Regulation of Nuclear Protein Sorting
2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K
02:33Retroviruses
12.2K
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
12.2K