COSTIMULATOR Meaning and
Definition
-
A costimulator, in the context of immunology, refers to a molecule or a cellular component that facilitates the activation and proliferation of T cells, a type of white blood cell crucial for the immune response. Costimulation occurs when the T cell receptor, present on the surface of T cells, recognizes the antigen specifically and simultaneously receives additional signals from costimulator molecules. These costimulatory signals are necessary to initiate an effective and appropriate immune response, preventing undesired immune reactions.
Costimulators act by binding to corresponding receptors on T cells, delivering essential signals that enhance T cell activation, cytokine production, and expansion. They can be classified into two major families: the B7-CD28 family and the TNF (tumor necrosis factor) family. Examples of costimulatory molecules include CD28, which interacts with B7 molecules on antigen-presenting cells, and CD40 on B cells that interacts with CD40 ligand on T cells.
The costimulation process is a crucial step in antigen recognition and immune response regulation, as it enables the fine-tuning of the immune system by generating either an immune response or immune tolerance. Dysregulation of costimulation may lead to immune dysfunction, such as autoimmunity or ineffective immune responses.
Understanding the role of costimulators in T cell activation and immune response regulation is of great importance for designing therapeutic strategies to modulate the immune system. Research in this field aims to identify and target costimulatory pathways to improve immune responses in diseases such as cancer, infectious diseases, and autoimmune disorders.
Common Misspellings for COSTIMULATOR
- xostimulator
- vostimulator
- fostimulator
- dostimulator
- cistimulator
- ckstimulator
- clstimulator
- cpstimulator
- c0stimulator
- c9stimulator
- coatimulator
- coztimulator
- coxtimulator
- codtimulator
- coetimulator
- cowtimulator
- cosrimulator
- cosfimulator
- cosgimulator
- cosyimulator
Etymology of COSTIMULATOR
The word "costimulator" is a combination of two components: "co-" and "stimulator".
1. "Co-" is a prefix derived from Latin and means "together" or "with". It is often used to depict mutual or joint action.
2. "Stimulator" is derived from the Latin word "stimulare", which means "to goad" or "to stimulate". It refers to something that causes or increases activity, excitement, or growth.
Therefore, "costimulator" is a compound word formed by combining "co-" and "stimulator". In the context of biology or immunology, a "costimulator" is a molecule or structure that works in conjunction with another molecule to enhance or activate an immune response.
Infographic
Add the infographic to your website:
