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  2. Regulatory T cell - Wikipedia

    en.wikipedia.org/wiki/Regulatory_T_cell

    Diagram of regulatory T cell, effector T cells and dendritic cell showing putative mechanisms of suppression by regulatory T cells. The molecular mechanism by which regulatory T cells exert their suppressor/regulatory activity has not been definitively characterized and is the subject of intense research.

  3. Type 1 regulatory T cell - Wikipedia

    en.wikipedia.org/wiki/Type_1_regulatory_T_cell

    The ways of Tr1 cells induction in vivo, ex vivo and in vitro differ and also envelop many different approaches but the molecular mechanism appears to be conserved. IL-27, together with TGF-β induces IL-10–producing regulatory T cells with Tr1-like properties cells.

  4. T cell - Wikipedia

    en.wikipedia.org/wiki/T_cell

    Regulatory T cells are yet another distinct population of T cells that provide the critical mechanism of tolerance, whereby immune cells are able to distinguish invading cells from "self". This prevents immune cells from inappropriately reacting against one's own cells, known as an " autoimmune " response.

  5. Co-stimulation - Wikipedia

    en.wikipedia.org/wiki/Co-stimulation

    Regulatory T cells (T REG) need CD28 signal for their generation and ICOS signal for their peripheral maintenance and survival. In contrast, HVEM, GITR and CD30 are suppressing their activity. [2] [4] [6] Effector T cells are mainly regulated by TNFRSF molecules, such as 41-BB, CD27, OX40, DR3 or GITR, which enhance their proliferation and ...

  6. Immune tolerance - Wikipedia

    en.wikipedia.org/wiki/Immune_tolerance

    The differentiated regulatory T cells subsequently migrate to the lamina propria, where they multiply. CX3CR1+ macrophages present in this environment secrete IL-10, which is required for the expansion of the regulatory T cell population. [35] In the lamina propria the regulatory T cell population creates a tolerogenic environment to food antigens.

  7. FOXP3 - Wikipedia

    en.wikipedia.org/wiki/FOXP3

    Foxp3 is a specific marker of natural T regulatory cells (nTregs, a lineage of T cells) and adaptive/induced T regulatory cells (a/iTregs), also identified by other less specific markers such as CD25 or CD45RB. [6] [7] [8] In animal studies, Tregs that express Foxp3 are critical in the transfer of immune tolerance, especially self-tolerance. [13]

  8. Cytotoxic T-lymphocyte associated protein 4 - Wikipedia

    en.wikipedia.org/wiki/Cytotoxic_T-lymphocyte...

    The clinical symptoms are caused by abnormalities of the immune system. Most patients develop reduced levels of at least one immunoglobulin isotype, and have low CTLA-4 protein expression in T regulatory cells, hyperactivation of effector T cells, low switched memory B cells, and progressive loss of circulating B cells. [26] [27] [31]

  9. T-cell depletion - Wikipedia

    en.wikipedia.org/wiki/T-cell_depletion

    Depletion of regulatory T cells increases immune activation. Glut1 regulation is associated with the activation of CD4+ T cells, thus its expression can be used to track the loss of CD4+ T cells during HIV. [19] Antiretroviral therapy, the most common treatment for patients with HIV, has been shown to restore CD4+ T cell counts. [20]

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