Related Experiment Video
Updated: Aug 2, 2025
11:14
Ex Vivo Infection of Human Lymphoid Tissue and Female Genital Mucosa with Human Immunodeficiency Virus 1 and Histoculture
Published on: October 12, 2018
9.2K
HIV establishes an early foothold.
Jose A Moran1, Matthew D Marsden2
1Department of Microbiology & Molecular Genetics, School of Medicine, University of California Irvine, Irvine, CA, USA.
Cell Host & Microbe
|April 13, 2023
Summary
Early HIV infection causes rapid immune damage and establishes latent reservoirs. New research uses single-cell analysis to reveal critical early events in human immunodeficiency virus pathogenesis and reservoir seeding.
Area of Science:
- Immunology
- Virology
- Pathogenesis
Background:
- The initial weeks after human immunodeficiency virus (HIV) acquisition are critical for viral spread and immune system damage.
- During this period, HIV establishes latent viral reservoirs, which are sanctuaries for the virus and a major barrier to eradication.
- Understanding early HIV infection dynamics is crucial for developing effective therapeutic strategies.
Purpose of the Study:
- To investigate the immunological events occurring in the critical weeks following HIV acquisition.
- To explore the mechanisms of early latent reservoir formation in HIV infection.
- To provide insights into early HIV pathogenesis using advanced analytical techniques.
Main Methods:
- The study employed single-cell analysis to meticulously examine host-pathogen interactions during early HIV infection.
- Researchers analyzed immune cell populations and viral dynamics at an unprecedented resolution.
- This approach allowed for a detailed understanding of cellular responses and viral dissemination.
Main Results:
- Single-cell analysis revealed distinct patterns of immune cell activation and dysfunction following HIV acquisition.
- The study identified specific cellular targets and pathways involved in the establishment of latent HIV reservoirs.
- Key insights into the kinetics of viral replication and immune evasion in the early stages of infection were obtained.
Conclusions:
- Early HIV infection involves complex immunological events that dictate viral pathogenesis and reservoir establishment.
- Single-cell analysis provides a powerful tool for dissecting these early events.
- These findings may inform the development of novel interventions aimed at preventing reservoir formation and improving HIV治疗 outcomes.
Related Concept Videos
01:26Size and Structure of Viral Genomes
74
Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
74
01:10Retrovirus Life Cycles
46.3K
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...
46.3K
01:26Sexually Transmitted Infections
374
Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
374
02:33Retroviruses
12.6K
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’...
12.6K
00:36Viral Mutations
32.7K
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material...
32.7K