Figure 2. Structural variation in lipopolysaccharides (LPS) from different bacterial species results in differential immune system responses [2••]. Stimulation with Escherichia coli LPS (left) is a potent activator of the immune system and results in increased cytokine production of IL-10, TNFα, IL-1β and IL-6.

January 9, 2023 - Cytokines are the chemical messengers that help your immune cells fight germs. Learn more about how these tiny proteins keep you infection-free.

Among all the anti-inflammatory cytokines, IL-10 is a cytokine with potent anti-inflammatory properties, repressing the expression of inflammatory cytokines such as TNF-α, IL-6 and IL-1 by activated macrophages. In addition, IL-10 can up-regulate endogenous anti-cytokines and down-regulate pro-inflammatory cytokine receptors. Thus, it can counter-regulate production and function of pro-inflammatory cytokines at multiple levels.

January 9, 2026 - Cytokines (/ˈsaɪtəkaɪn/) are ... Cytokines are produced by a broad range of cells, including immune cells, as well as endothelial cells, fibroblasts, and various types of connective tissue cells....

The production of cytokines is triggered by specific stimuli that activate the relevant cells. These stimuli include antigens, microbial products, and inflammatory signals.

Secreted by Th1 cells, CD4+ cells, macrophages, and dendritic cells, these cytokines are characterized by production of several Interleukins (IL) - IL-1, IL-2, IL-12, IL-17, IL-18 as well as IFN-γ, and TNF-α.

September 7, 2021 - Cytokine production capacity is a key component of the host defense mechanisms: it induces inflammation, activates phagocytes to eliminate the pathogens and present antigens, and controls induction of T-helper (Th) adaptive immune responses.

November 19, 2019 - Whereas proinflammatory cytokines alert the immune system to the presence of potential infection or danger, dysregulated cytokine production can lead to immunopathology, including autoinflammatory and autoimmune disease, and, in some cases, can promote cancer.

Innate immune and differentiated T cells produce signature cytokines in response to cytokine stimulation. Optimal production requires stimulation by an NF-κB inducer, most commonly an interleukin (IL)-1 family member, and a STAT activator. Usually, ...

Innate immune cells can combat pathogens directly via the production of cytotoxic mediators, and in many cases this is combined with phagocytosis and intracellular killing of pathogens. Epithelial and innate immune cells possess the ability to alert or disarm the rest of the immune system through the release of a large number of pro-inflammatory and immunoregulatory cytokines and chemokines.

Some cytokines can be made in a lab and are used to treat cancer. Others help prevent or manage chemotherapy side effects.

March 6, 2025 - At steady state, cytokine mRNA translation in TRM cells was suppressed by the integrated stress response (ISR) pathway. Upon activation, the central ISR regulator, eIF2α, was dephosphorylated and stored cytokine mRNA was translated for immediate cytokine production.

Our results demonstrate that healthy children differ markedly compared with adults in their ability to produce cytokines (IL-2, interferon-γ, IL-4, and IL-6). Maximal stimulation with mitogen demonstrated impaired cytokine production with markedly lower levels of all four cytokines produced compared with adult levels.

Short or long isoforms of IL-4 can exist arising from alternative splicing.40 IL-4 is produced by activated T cells, mast cells, basophils and NKT cells and targets many cell types, including B cells, T cells, macrophages and a wide variety of hematopoietic and nonhematopoietic cells.29,41 Physiologic signal transduction via IL-4 depends on heterodimerization of the IL-4 receptor α chain (IL-4Ra/CD124), with γc and possibly the IL-13 receptor α chain (IL-13Ra/CD213a1).42 IL-4 is the principal cytokine required by B cells to switch to the production of immunoglobulin (Ig)E antibodies, which mediate immediate hypersensitivity (allergic) reactions and help defend against helminth infections.41 IL-4 also inhibits macrophage activation and most of the effects of IFN-γ on macrophages.

March 18, 2008 - Some of these regulatory proteins direct their associated mRNA molecules to discrete cytoplasmic foci (stress granules and processing bodies) that are essential in 'programming' mRNA 'metabolism'. Studies have begun to identify how these various mechanisms are integrated and regulated to determine the amount of cytokine production in cells involved in immune responses.

June 15, 2018 - Cytokines are important cell-signaling molecules that activate and modulate immune responses. Major factors influencing cytokine variation in healthy individuals are host genetics, non-heritable factors and the microbiome. Genetic variation accounts for a significant part of heterogeneity in cytokine production by peripheral blood mononuclear cells.

June 1, 1995 - Cytokines participate in normal physiologic events within the CNS.At times of infection and inflammation, their role is emphasized by the upregulation of cytokines and their receptors within the CNS, with concomitant effects on brain function. Cytokines produced by glial cells, T cells, and macrophages interact within the CNS to determine the outcome of the inflammatory reaction.

July 19, 2023 - Initial recognition of antigens is mediated by specific receptors located on monocytes, macrophages and dendritic cells and leads to the production of cytokines. Cytokines are low molecular-weight proteins that serve as chemical messengers to ...

Cytokines are soluble proteins that are produced and secreted as part of the immune response to a variety of tissue insults including infection, cancer, and autoimmunity. Most cytokines are secreted by cells of the immune system, but some (for ...

June 11, 2025 - The production of cytokines is a tightly regulated process that involves various cell types and is influenced by a multitude of factors, including the presence of pathogens, the state of the immune system, and the microenvironment of the cells producing cytokines.