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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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Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells
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Hitting the reset button for immune tolerance.

A D Kirk1

  • 1National Institutes of Health, Room 11S/219, Building 10, Center Drive, Bethesda, MD 20892, USA. allank@intra.niddk.nih.gov

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|January 3, 2001
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This summary is machine-generated.

Migratory cells play a dual role in organ transplantation, potentially causing rejection or promoting tolerance. This finding guides the development of new therapies to enhance immune tolerance.

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Area of Science:

  • Immunology
  • Transplantation Biology
  • Cellular Biology

Background:

  • Organ transplantation is a critical treatment for end-stage organ failure.
  • Immune responses following transplantation can lead to graft rejection or acceptance (tolerance).
  • The role of specific cell types, particularly migratory cells, in determining transplant outcomes is complex.

Discussion:

  • Migratory cells, such as immune cells and potentially donor-derived cells, can influence the recipient's immune response.
  • These cells may either exacerbate the immune attack against the graft (rejection) or induce a state of immune acceptance (tolerance).
  • Understanding the mechanisms by which migratory cells mediate these opposing outcomes is crucial.

Key Insights:

  • Migratory cells exhibit plasticity, capable of promoting either detrimental rejection or beneficial tolerance after organ transplantation.
  • This dual function highlights the intricate immune dynamics governing transplant success.
  • Identifying the factors that steer migratory cell behavior towards tolerance is a key challenge.

Outlook:

  • The findings suggest a promising avenue for developing novel immunomodulatory therapies.
  • Targeting migratory cell functions could lead to strategies that actively promote immune tolerance, reducing reliance on broad immunosuppression.
  • Future research should focus on dissecting the specific pathways and signals that govern the pro-tolerant functions of migratory cells in transplantation.