Related Experiment Video
Updated: Jul 19, 2025
High Throughput Sequential ELISA for Validation of Biomarkers of Acute Graft-Versus-Host Disease
Published on: October 31, 2012
High-dimensional profiling of pediatric immune responses to solid organ transplantation
Mahil Rao1, Meelad Amouzgar2, James T Harden3
1Department of Pediatrics, Division of Pediatric Critical Care Medicine, Stanford University School of Medicine, Palo Alto, CA 94304, USA; Transplant Immunology Lab, Stanford University School of Medicine, Palo Alto, CA 94304, USA.
Insights
Detecting early transplant rejection in children is challenging. This study reveals how immune cell changes in pediatric transplant recipients are linked to graft health, paving the way for better monitoring and treatments.
Area of Science:
- Pediatric immunology
- Transplant medicine
- Single-cell analysis
Background:
- Solid organ transplantation is vital for children with end-stage organ failure.
- Acute rejection affects approximately 33% of pediatric allograft recipients within the first year.
- Understanding immune changes in pediatric transplant recipients is crucial for early rejection detection.
Purpose of the Study:
- To investigate the peripheral blood immune cell composition in pediatric solid organ transplant recipients.
- To identify immune signatures associated with allograft health in children.
- To explore organ-specific immune responses post-transplant.
Main Methods:
- Detailed, multilineage, single-cell analysis using high-dimensional mass cytometry.
- Application of supervised and unsupervised analysis methods to study cell-type proportions.
- Focus on peripheral blood immune composition in pediatric transplant recipients.
Main Results:
- The type of allograft significantly influences the post-transplant immune profile.
- Graft health is associated with specific changes in T cell subpopulations.
- Organ-specific differences in immune profiles were observed.
Conclusions:
- Immune profiles in pediatric transplant recipients vary based on allograft type.
- Distinct T cell subpopulations correlate with graft health.
- These findings support the development of targeted immunosuppressive therapies and improved rejection monitoring.
Abstract:
Solid organ transplant remains a life-saving therapy for children with end-stage heart, lung, liver, or kidney disease; however, ∼33% of allograft recipients experience acute rejection within the first year after transplant. Our ability to detect early rejection is hampered by an incomplete understanding of the immune changes associated with allograft health, particularly in the pediatric population. We performed detailed, multilineage, single-cell analysis of the peripheral blood immune composition in pediatric solid organ transplant recipients, with high-dimensional mass cytometry. Supervised and unsupervised analysis methods to study cell-type proportions indicate that the allograft type strongly influences the post-transplant immune profile. Further, when organ-specific differences are considered, graft health is associated with changes in the proportion of distinct T cell subpopulations. Together, these data form the basis for mechanistic studies into the pathobiology of rejection and allow for the development of new immunosuppressive agents with greater specificity.
More Related Videos
12:36Single-cell Analysis of Immunophenotype and Cytokine Production in Peripheral Whole Blood via Mass Cytometry
Published on: June 26, 2018
18:48In Vitro and In Vivo Assessment of T, B and Myeloid Cells Suppressive Activity and Humoral Responses from Transplant Recipients
Published on: August 12, 2017