Related Experiment Video
Updated: Oct 5, 2025

14:56
A Genetic Screen to Isolate Toxoplasma gondii Host-cell Egress Mutants
Published on: February 8, 2012
13.2K
Eviction notice served on Toxoplasma
Juan C Sánchez-Arcila1, Kirk Dc Jensen1,2
1Department of Molecular and Cell Biology, University of California Merced, Merced, United States.
Elife
|January 25, 2022
Summary
The gene RARRES3 unexpectedly eliminates the parasite Toxoplasma gondii from human cells. This discovery offers new insights into host-pathogen interactions and potential therapeutic targets.
Area of Science:
- Cell biology
- Parasitology
- Genetics
Background:
- Toxoplasma gondii is an opportunistic parasite that infects a wide range of host cells.
- Understanding host cell mechanisms for parasite elimination is crucial for developing new treatments.
Purpose of the Study:
- To investigate the role of the gene RARRES3 in the host cell's defense against Toxoplasma gondii infection.
Main Methods:
- Gene expression analysis
- Cell culture models
- Microscopy techniques
- Parasite viability assays
Main Results:
- The gene RARRES3 was found to be upregulated during Toxoplasma gondii infection.
- Knockdown of RARRES3 expression led to increased parasite load.
- RARRES3 mediates an unconventional pathway to clear the parasite from infected cells.
Conclusions:
- RARRES3 employs a novel mechanism to combat Toxoplasma gondii.
- This finding highlights a new host-directed strategy against parasitic infections.
Keywords:
Toxoplasmacell deathegressgrowth restrictioninfectious diseaseinterferon gammamicrobiologyparasitesvacuoleMore Related Videos
Related Concept Videos
Teratogenicity
3.0K
The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
3.0K
Types of Toxins
2.2K
Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
2.2K
Enhanced Elimination of Poison
602
Poison can be effectively removed from the gastrointestinal (GI) tract through various decontamination procedures.
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
Antidotes serve a crucial role in counteracting the effects of poison by inhibiting enzymes responsible for producing harmful drug metabolites. In some cases, these toxic metabolites can be neutralized by endogenous cosubstrates, which are maintained at specific concentrations to prevent interaction with cellular macromolecules and subsequent cell death.
Renal excretion is the...
602
Pulmonary Tuberculosis IV
222
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
222
Cytotoxic T Cells-mediated Immune Response
3.7K
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...
3.7K
Caspases
12.8K
Caspase, a family of cysteine proteases, serve as effectors in apoptosis. The ced3 gene in C.elegans was first identified to be involved in apoptosis. This gene encodes the ced-3 caspase that is similar to the interleukin-1-beta converting enzyme or ICE in mammals. In addition to apoptosis, caspases also function in the inflammatory response. Inflammatory caspases are essential in activating pro-inflammatory cytokines that recruit immune cells and block the replication of pathogens inside...
12.8K

