Related Experiment Video
Updated: Jun 1, 2026

06:15
Characterization of Thymus-dependent and Thymus-independent Immunoglobulin Isotype Responses in Mice Using Enzyme-linked Immunosorbent Assay
Published on: September 7, 2018
Expanding TRAF function: TRAF3 as a tri-faced immune regulator.
Hans Häcker1, Ping-Hui Tseng, Michael Karin
1Department of Infectious Diseases, St. Jude Childrens Research Hospital, Memphis, Tennessee 38105, USA. hans.haecker@stjude.org
Nature Reviews. Immunology
|June 11, 2011
Summary
Tumour necrosis factor receptor (TNFR)-associated factor 3 (TRAF3) regulates key immune responses. This review details TRAF3
Area of Science:
- Immunology
- Molecular Biology
- Cell Signalling
Background:
- Tumour necrosis factor receptor (TNFR)-associated factor (TRAF) proteins are crucial mediators in signalling pathways.
- TRAFs are involved in diverse biological processes, including cytokine production and cell survival.
- The specific role of TRAF3 was previously unclear.
Purpose of the Study:
- To review the current understanding of TRAF3 function in TNFR and Toll-like receptor (TLR) signalling.
- To discuss the implications of TRAF3 in disease pathogenesis.
Main Methods:
- Literature review of studies on TRAF3 function.
- Analysis of TRAF3's role in TNFR and TLR signalling pathways.
- Examination of TRAF3's involvement in various disease contexts.
Main Results:
- TRAF3 acts as a versatile regulator in immune signalling.
- TRAF3 positively controls type I interferon production.
- TRAF3 negatively regulates mitogen-activated protein kinase (MAPK) activation and alternative nuclear factor-κB (NF-κB) signalling.
Conclusions:
- TRAF3 plays a critical, multifaceted role in TNFR and TLR signalling.
- Understanding TRAF3's function is key to comprehending immune responses and related diseases.
Related Concept Videos
Transduction
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome are...
Cells of the Adaptive Immune Response
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
TGF - β Signaling Pathway
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors are of three kinds RI, RII, and RIII. The RI...
Transcytosis of IgG
Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis.
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
Diversity of Antigen Receptors
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
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...

