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Related Concept Videos

Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview
Tissue Transplantation01:24

Tissue Transplantation

Tissue transplantation is a significant medical procedure involving the transfer of cells, tissues, or organs from a donor to a recipient, with the primary aim of restoring lost functions. This procedure is crucial in treating a broad spectrum of diseases, including kidney diseases, liver failure, heart disease, and certain types of cancers.
The Biology of Tissue Transplantation
The biology of tissue transplantation hinges on the Major Histocompatibility Complex (MHC) molecules. These molecules...
Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

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...
Kidney Transplant I: Introduction01:28

Kidney Transplant I: Introduction

A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
Bone Marrow Sampling and Transplants01:22

Bone Marrow Sampling and Transplants

Bone marrow transplant is a potential cure for several diseases, including cancer and specific genetic disorders. Notably, this procedure is applicable for patients suffering from aplastic anemia, certain types of leukemia, severe combined immunodeficiency disease (SCID), Hodgkin's disease, non-Hodgkin's lymphoma, multiple myeloma, thalassemia, sickle-cell disease, and certain cancers.
The transplant begins with high doses of chemotherapy and radiation treatment, which aim to destroy the...
Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...

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Related Experiment Video

Updated: May 14, 2026

Investigating the Immunological Mechanisms Underlying Organ Transplant Rejection
05:10

Investigating the Immunological Mechanisms Underlying Organ Transplant Rejection

Published on: August 20, 2007

Concise review: immunologic lessons from solid organ transplantation for stem cell-based therapies.

Andrea Loewendorf1, Marie Csete

  • 1Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California, Los Angeles, California 90095, USA. asnead@mednet.ucla

Stem Cells Translational Medicine
|January 26, 2013
PubMed
Summary

Organ transplant rejection remains a challenge, but insights from transplant immunology can inform future stem cell therapies. Understanding allorecognition is key for advancing graft tolerance and improving patient outcomes.

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Investigating the Immunological Mechanisms Underlying Organ Transplant Rejection
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In Vitro and In Vivo Assessment of T, B and Myeloid Cells Suppressive Activity and Humoral Responses from Transplant Recipients
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Area of Science:

  • Transplant immunology
  • Allorecognition
  • Stem cell therapy

Background:

  • Clinical organ transplantation relies on immunosuppression to prevent alloimmune responses.
  • Despite decades of progress, organ rejection persists as a significant clinical challenge.
  • Insights from solid organ transplantation offer valuable lessons for stem cell-based therapies.

Purpose of the Study:

  • To review key topics in transplant immunology relevant to stem cell therapies.
  • To bridge the gap between solid organ transplantation knowledge and stem cell literature.
  • To highlight areas needing further investigation for improving graft tolerance.

Main Methods:

  • Review of current understanding in transplant immunology.
  • Focus on topics less prominent in stem cell literature.
  • Synthesis of knowledge on allorecognition and immune responses.

Main Results:

  • Identified critical areas including ischemia/reperfusion injury, natural killer cells, and adaptive immunity.
  • Highlighted unresolved issues in T-cell allorecognition and costimulatory molecules.
  • Emphasized the potential role of regulatory T cells in achieving graft tolerance.

Conclusions:

  • Decades of solid organ transplantation experience provide crucial insights for stem cell therapies.
  • A deeper understanding of allorecognition is essential for advancing stem cell-based treatments.
  • Targeting specific immune components and regulatory mechanisms may enhance graft tolerance.