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Regulation of Hematopoietic Stem Cells01:01

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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Regulatory B10 cell development and function.

Jacquelyn M Lykken1, Kathleen M Candando1, Thomas F Tedder2

  • 1Department of Immunology, Duke University Medical Center, Durham, NC 27710, USA.

International Immunology
|August 9, 2015
PubMed
Summary
This summary is machine-generated.

A rare B cell subset, known as B10 cells, produces IL-10 to suppress immune responses. These cells offer a targeted approach for treating immune-related disorders.

Keywords:
B lymphocyteB10 cellIL-10antigen specificityregulatory B cell

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • B cells typically promote immune responses via antibodies and antigen presentation.
  • A distinct B cell subset inhibits immune responses by producing the anti-inflammatory cytokine IL-10.

Purpose of the Study:

  • To functionally characterize a rare B cell subset, termed B10 cells, responsible for IL-10 production and immune suppression.
  • To explore the mechanisms and therapeutic potential of B10 cells in immune regulation.

Main Methods:

  • Analysis of B cell populations in humans and mice.
  • Investigation of IL-10 production by B cells.
  • Assessment of B10 cell function in models of autoimmunity, infection, and cancer.
  • Evaluation of T cell interactions with B10 cells for IL-10 induction.

Main Results:

  • B10 cells are a numerically rare subset of B cells characterized by IL-10 production.
  • Their anti-inflammatory effects are solely attributable to IL-10.
  • B10 cell development is driven by antigen-receptor signals.
  • Optimal immune suppression requires antigen-specific T cell interactions for IL-10 induction.

Conclusions:

  • B10 cells provide an antigen-specific mechanism for localized IL-10 delivery to sites of inflammation.
  • Their ability to regulate innate and adaptive immunity makes them a promising therapeutic target for immune-related disorders.