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Related Experiment Videos

Donor bone marrow transplantation: chimerism and tolerance.

Spiros Delis1, Gaetano Ciancio, George W Burke

  • 1Department of Surgery, Division of Kidney, Kidney/Pancreas Transplant, University of Miami School of Medicine, Miami, FL, USA.

Transplant Immunology
|September 24, 2004
PubMed
Summary

Donor bone marrow infusions aim to create specific immunologic tolerance by deleting donor-specific cells. This approach, involving T cell depletion and donor cell repopulation, shows promise for long-term graft tolerance.

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Area of Science:

  • Immunology
  • Transplantation Science
  • Cell Therapy

Background:

  • Donor bone marrow (DBM)-derived cells are investigated for inducing specific immunologic tolerance.
  • Mixed chimerism, achieved through DBM infusion, reliably produces long-term graft tolerance via central clonal deletion.
  • Depletion of recipient T cells and subsequent donor hematopoietic cell repopulation are crucial for tolerance induction.

Purpose of the Study:

  • To review advances in inducing specific immunologic tolerance using donor bone marrow infusions.
  • To discuss key questions and future perspectives in the field of graft tolerance induction.

Main Methods:

  • Infusion of donor bone marrow (DBM)-derived cells in clinical protocols.
  • Depletion of recipient T cells using antilymphocyte antibodies.

Related Experiment Videos

  • Repopulation by donor hematopoietic cells following donor bone marrow infusion (DBMI).

    • Main Results:

    • Central clonal deletion of donor-specific alloreactive cells is associated with mixed chimerism.
    • Mixed chimerism reliably produces long-term graft tolerance.
    • Advances have been made in both animal models and pilot clinical trials.

    Conclusions:

    • Donor bone marrow infusion protocols are being refined to achieve specific immunologic tolerance.
    • The combination of T cell depletion and donor cell repopulation is a key strategy.
    • Future research will address critical questions and explore new perspectives for enhancing graft tolerance.