Related Experiment Video
Updated: Jun 12, 2026

09:27
New Tools to Expand Regulatory T Cells from HIV-1-infected Individuals
Published on: May 30, 2013
Th17, gut, and HIV: therapeutic implications
1Positive Health Program, San Francisco General Hospital, University of California-San Francisco, 995 Potrero Avenue, San Francisco, CA 94110, USA. phunt@php.ucsf.edu
Current Opinion in HIV and AIDS
|June 15, 2010
Summary
Persistent immune activation in treated HIV infection contributes to increased morbidity and mortality. Restoring Th17 cells may offer a novel therapeutic strategy to reduce these risks.
Area of Science:
- Immunology
- Infectious Diseases
- Virology
Background:
- Antiretroviral therapy (ART) suppresses HIV but does not fully restore life expectancy.
- Treated HIV-infected individuals face higher risks of non-AIDS-associated diseases and premature mortality.
- Persistent immune activation and inflammation continue despite viral suppression.
Purpose of the Study:
- To examine the impact of persistent immune activation and inflammation on morbidity and mortality in treated HIV.
- To investigate the role of Th17 T-cell depletion in HIV-associated complications.
- To explore potential therapeutic strategies targeting Th17 cells.
Main Methods:
- Review of recent pathogenesis studies on HIV infection and immune response.
- Analysis of factors contributing to persistent immune activation.
- Exploration of the role of gut-associated lymphoid tissue (GALT) and Th17 cells.
Main Results:
- Persistent immune activation and inflammation are linked to increased morbidity and mortality in treated HIV.
- Causes include low-level HIV replication, latent viral release, and microbial translocation.
- Impaired Th17 cell restoration in GALT may hinder gut barrier function and microbial clearance.
Conclusions:
- Restoring Th17 cells in GALT could be a novel therapeutic approach.
- This strategy may reduce microbial translocation and immune activation.
- Ultimately, Th17 cell restoration could decrease morbidity and mortality in treated HIV infection.
Related Concept Videos
Immunodeficiency Diseases
Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
There are three main causes of immunodeficiency disorders...
Retrovirus Life Cycles
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 retrovirus to...
T Cell Types and Functions
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Cytotoxic T Cells-mediated Immune Response
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Sexually Transmitted Infections
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...
Immune Response Against Viral Pathogens
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
