Related Experiment Video
Updated: May 7, 2026
09:03
Forward Genetic Approaches in Chlamydia trachomatis
Published on: October 23, 2013
12.4K
New frontiers in type III secretion biology: the Chlamydia perspective
K E Mueller1, G V Plano, K A Fields
1Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky College of Medicine, Lexington, Kentucky, USA.
Infection and Immunity
|October 16, 2013
Summary
Chlamydia bacteria are intracellular parasites that use a type III secretion system (T3S) to infect hosts. Recent advances in genetic manipulation are improving our understanding of T3S in Chlamydia pathogenesis.
Area of Science:
- Microbiology
- Bacteriology
- Pathogenesis
Background:
- Chlamydiales are obligate intracellular parasites infecting diverse eukaryotic hosts, including mammals.
- Notable human pathogens include Chlamydia trachomatis, Chlamydia pneumoniae, and Chlamydia psittaci.
- These bacteria reside within specialized intracellular vacuoles called inclusions.
Purpose of the Study:
- To review challenges and recent advances in understanding the type III secretion system (T3S) in Chlamydia species.
- To explore how Chlamydia has conserved and diversified its T3S for pathogenesis.
Main Methods:
- Review of existing literature on Chlamydia biology and type III secretion.
- Analysis of genetic manipulation techniques for studying Chlamydia.
Main Results:
- Chlamydial genomes encode a nonflagellar type III secretion system essential for virulence.
- T3S is crucial for host cell entry, niche establishment, and immune evasion.
- Conserved and diversified aspects of T3S contribute to the unique biology of Chlamydia.
Conclusions:
- Advances in genetic manipulation promise significant progress in Chlamydia research.
- Understanding T3S is key to deciphering the pathogenesis of Chlamydia infections.
- T3S is a fundamental mechanism driving the parasitic lifestyle of Chlamydia.
More Related Videos
Related Concept Videos
01:29Bacterial Phylum Chlamydiae
854
The phylum Chlamydiae or Chlamydiota is composed of a single order, Chlamydiales. This phylum consists entirely of obligate intracellular parasites that infect eukaryotic hosts. While human pathogens within this group have been studied extensively, the phylum encompasses many species capable of interacting with various eukaryotic organisms. Members of Chlamydiae are typically small cocci, approximately 0.5 μm in diameter, and exhibit a distinctive developmental cycle. As is characteristic...
854
01:17Gram-negative Bacterial Protein Secretion Systems
1.7K
Gram-negative bacteria utilize sophisticated protein secretion systems to transport proteins across their double-membrane envelope into the extracellular environment or host cells. Based on their mechanism of action, these systems are classified into one-step and two-step pathways.One-Step Secretion Systems (Types I, III, IV, and VI)One-step secretion systems bypass the periplasm entirely, forming a continuous channel that spans both the inner and outer membranes:Type I Secretion System (T1SS):...
1.7K
01:26Sexually Transmitted Infections
2.0K
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...
2.0K
01:30Bacterial Phylum Spirochaetes
1.5K
Spirochetes, unique bacteria in the phylum Spirochaetes, are gram-negative, motile, tightly coiled, slender, and flexible. They inhabit aquatic sediments and animals, with some causing diseases like syphilis. Spirochetes are classified into eight genera based on habitat, pathogenicity, phylogeny, and characteristics.Their distinctive motility arises from endoflagella, located within the cell’s periplasm. These endoflagella anchor at the cell poles and extend along the cell length, encased...
1.5K
02:55Synthetic Biology
4.4K
Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
Golden rice
Golden rice is a genetically modified...
Golden rice
Golden rice is a genetically modified...
4.4K
01:10Intracellular Movement of Viruses and Bacteria
3.0K
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...
3.0K