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Related Concept Videos

Introduction to Innate and Adaptive Immunity01:21

Introduction to Innate and Adaptive Immunity

The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
Innate immunity is the body's natural, nonspecific defense system that acts quickly to protect against pathogens. It incorporates physical barriers like skin and mucous membranes and cellular elements such as phagocytes and natural killer cells. This part of our immune system provides an immediate,...
Cells of the Innate Immune Response01:28

Cells of the Innate Immune Response

The innate immune response is an immediate and non-specific response against pathogens, acting swiftly to prevent the spread of infections. The primary cells involved in this response are phagocytes and natural killer (NK) cells.
Phagocytes
Phagocytes police the peripheral tissues by removing cellular debris and responding to the invasion of foreign substances or pathogens. Many phagocytes attack and remove microorganisms even before lymphocytes detect them. The human body has two general...
Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
B Cell Activation and Differentiation01:24

B Cell Activation and Differentiation

The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
The Unfolded Protein Response01:37

The Unfolded Protein Response

The ER is the hub of protein synthesis in a cell. It has robust systems to quality control protein folding and also for degradation of terminally misfolded proteins. Under normal conditions, a small proportion of misfolded proteins that cannot be salvaged need to be transported to the cytoplasm by the ER-associated degradation or ERAD pathways. However, if the ERAD cannot handle the misfolded proteins, the cell activates the unfolded protein response or UPR to adjust the protein folding...
Cells of the Adaptive Immune Response01:23

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...

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Related Experiment Video

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Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells
06:07

Measuring Mitochondrial Function of Naïve and Effector CD8 T Cells

Published on: March 28, 2025

M(odu)LLating the innate response.

Ronnie Blecher-Gonen1, Ido Amit

  • 1Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel.

Immunity
|April 24, 2012
PubMed
Summary
This summary is machine-generated.

The histone methyltransferase MLL4 (Wbp7) plays a key role in regulating Toll-like receptor pathway molecules. This research clarifies the specific function of chromatin modifiers in immune response networks.

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Area of Science:

  • Molecular Biology
  • Immunology
  • Epigenetics

Background:

  • The precise mechanisms by which chromatin modifiers integrate into cellular regulatory networks remain incompletely elucidated.
  • Understanding these interactions is crucial for deciphering gene expression control in various biological processes.

Discussion:

  • Austenaa et al. (2012) identify a specific function for the histone methyltransferase MLL4 (Wbp7) within the Toll-like receptor (TLR) signaling pathway.
  • This study highlights the direct involvement of MLL4 in modulating the expression of key molecules essential for TLR pathway activation and function.

Key Insights:

  • MLL4 (Wbp7) acts as a critical regulator of gene expression within the Toll-like receptor pathway.
  • The findings establish a direct link between a specific histone methyltransferase and the innate immune response mediated by TLRs.

Outlook:

  • Further investigation into MLL4's role could reveal novel therapeutic targets for immune-related disorders.
  • This work paves the way for a deeper understanding of epigenetic regulation in innate immunity.