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Affinity and Avidity

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Special Features of Adaptive Immunity

Special Features of Adaptive Immunity

The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...

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An IL-8 Transiently Transgenized Mouse Model for the In Vivo Long-term Monitoring of Inflammatory Responses

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Engineered IL-10: A matter of affinity.

Ruben Fernandez-Santamaria^1,2, Pattraporn Satitsuksanoa^1,3

¹Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland.

|October 9, 2021

Summary

Interleukin-10 (IL-10) exhibits dual roles, acting as both an anti-inflammatory and pro-inflammatory cytokine. Its specific function depends on the binding affinity to IL-10 receptors, influencing immune responses.

Keywords:

IL-10 allergic disease biotechnology inflammation tolerance

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Area of Science:

Immunology
Molecular Biology

Background:

Interleukin-10 (IL-10) is produced by various immune cells, including regulatory T cells, B cells, ILCregs, macrophages, and dendritic cells (DCs).
IL-10 displays pleiotropic functions, capable of exerting both anti-inflammatory and pro-inflammatory effects within the immune system.

Discussion:

The anti-inflammatory role of IL-10 involves suppressing inflammatory signals from immune cells.
Conversely, in a pro-inflammatory context, IL-10 can stimulate CD8+ T cells to release interferon-gamma (IFN-γ) and granzyme B.

Key Insights:

The differential activities of IL-10 are mechanistically linked to its binding affinity to IL-10 receptor subunits (IL-10Rα and IL-10Rβ).
Dimerization of the IL-10 complex with its receptors activates STAT1 and STAT3 signaling pathways, diversifying IL-10's biological outcomes.
High-affinity binding to IL-10Rβ mediates both anti-inflammatory and pro-inflammatory responses, whereas low-affinity binding exclusively results in anti-inflammatory functions.

Outlook:

Further research into IL-10 receptor interactions could reveal novel therapeutic targets for immune-mediated diseases.
Understanding the precise molecular mechanisms governing IL-10's dual roles is crucial for developing targeted immunomodulatory strategies.