Related Experiment Video
Updated: Mar 21, 2026
15:29
Microscopy-based Assays for High-throughput Screening of Host Factors Involved in Brucella Infection of Hela Cells
Published on: August 5, 2016
8.7K
[MOLECULAR ASPECTS OF BRUCELLA PERSISTENCE]
Summary
Brucellosis bacteria evade host immunity using sophisticated molecular mechanisms. Understanding how Brucella persists inside cells can lead to better treatments for chronic brucellosis.
Area of Science:
- Microbiology
- Immunology
- Infectious Diseases
Context:
- Brucellosis is a significant zoonotic disease affecting both animals and humans.
- Brucella bacteria exhibit remarkable intracellular survival and multiplication capabilities within host cells.
Purpose:
- This review explores the molecular mechanisms Brucella employs to evade host innate and adaptive immunity.
- It focuses on the role of the type IV secretion system in bacterial persistence and host cell signaling.
Summary:
- Brucella species utilize effector proteins from the type IV secretion system to manipulate host signaling pathways.
- These mechanisms facilitate intracellular persistence, enabling the bacteria to escape immune surveillance.
Impact:
- Elucidating these molecular strategies is crucial for developing novel interventions against chronic brucellosis.
- This knowledge can pave the way for more effective prevention and treatment of persistent Brucella infections.
Related Concept Videos
01:25Colonisation of Pathogens
9
Pathogen colonization of host tissues is a critical step in the development of infectious diseases. Various pathogenic microorganisms, including bacteria, fungi, viruses, and protozoa, have evolved complex strategies to attach to, invade, and persist within host environments. These mechanisms enable pathogens to establish infections, evade immune responses, and resist antimicrobial treatments.Attachment to Host CellsIn bacteria, colonization typically begins with adherence to host epithelial...
9
01:31Defense Against Bacterial Pathogens
3.3K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
3.3K
01:28Regulation of Bacterial Virulence
3
Pathogenic bacteria employ a range of regulatory mechanisms to modulate the expression of virulence genes in response to environmental and host-derived signals. These mechanisms ensure that virulence factors are expressed only under favorable conditions, thereby optimizing infection and survival strategies.Mechanisms of Virulence RegulationKey regulatory strategies include:Two-Component Systems: These consist of a membrane-bound sensor kinase and a cytoplasmic response regulator. Environmental...
3
01:23Immunological Memory
17.8K
Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature...
17.8K
01:16Viral Replication: Lysogenic Cycle
2.2K
The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
2.2K
01:21Vaccines
2
Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the...
2