Tissue-resident Lymphocytes Are Released During Hypothermic and Normothermic Machine Perfusion of Human Donor Kidneys.
Journal
Transplantation
ISSN: 1534-6080
Titre abrégé: Transplantation
Pays: United States
ID NLM: 0132144
Informations de publication
Date de publication:
01 Apr 2024
01 Apr 2024
Historique:
medline:
1
4
2024
pubmed:
1
4
2024
entrez:
1
4
2024
Statut:
aheadofprint
Résumé
Machine perfusion is the preferred preservation method for deceased donor kidneys. Perfusate fluid, which contains a complex mixture of components, offers potential insight into the organ's viability and function. This study explored immune cell release, particularly tissue-resident lymphocytes (TRLs), during donor kidney machine perfusion and its correlation with injury markers. Perfusate samples from hypothermic machine perfusion (HMP; n = 26) and normothermic machine perfusion (NMP; n = 16) of human donor kidneys were analyzed for TRLs using flow cytometry. Residency was defined by expressions of CD69, CD103, and CD49as. TRL release was quantified exclusively in NMP. Additionally, levels of cell-free DNA, neutrophil gelatinase-associated lipocalin, and soluble E-cadherin (sE-cadherin) were measured in NMP supernatants with quantitative polymerase chain reaction and enzyme-linked immunosorbent assay. Both HMP and NMP samples contained a heterogeneous population of TRLs, including CD4+ tissue-resident memory T cells, CD8+ tissue-resident memory T cells, tissue-resident natural killer cells, tissue-resident natural killer T cells, and helper-like innate lymphoid cells. Median TRL proportions among total CD45+ lymphocytes were 0.89% (NMP) and 0.84% (HMP). TRL quantities in NMP did not correlate with donor characteristics, perfusion parameters, posttransplant outcomes, or cell-free DNA and neutrophil gelatinase-associated lipocalin concentrations. However, CD103+ TRL release positively correlated with the release of sE-cadherin, the ligand for the CD103 integrin. Human donor kidneys release TRLs during both HMP and NMP. The release of CD103+ TRLs was associated with the loss of their ligand sE-cadherin but not with general transplant injury biomarkers.
Sections du résumé
BACKGROUND
BACKGROUND
Machine perfusion is the preferred preservation method for deceased donor kidneys. Perfusate fluid, which contains a complex mixture of components, offers potential insight into the organ's viability and function. This study explored immune cell release, particularly tissue-resident lymphocytes (TRLs), during donor kidney machine perfusion and its correlation with injury markers.
METHODS
METHODS
Perfusate samples from hypothermic machine perfusion (HMP; n = 26) and normothermic machine perfusion (NMP; n = 16) of human donor kidneys were analyzed for TRLs using flow cytometry. Residency was defined by expressions of CD69, CD103, and CD49as. TRL release was quantified exclusively in NMP. Additionally, levels of cell-free DNA, neutrophil gelatinase-associated lipocalin, and soluble E-cadherin (sE-cadherin) were measured in NMP supernatants with quantitative polymerase chain reaction and enzyme-linked immunosorbent assay.
RESULTS
RESULTS
Both HMP and NMP samples contained a heterogeneous population of TRLs, including CD4+ tissue-resident memory T cells, CD8+ tissue-resident memory T cells, tissue-resident natural killer cells, tissue-resident natural killer T cells, and helper-like innate lymphoid cells. Median TRL proportions among total CD45+ lymphocytes were 0.89% (NMP) and 0.84% (HMP). TRL quantities in NMP did not correlate with donor characteristics, perfusion parameters, posttransplant outcomes, or cell-free DNA and neutrophil gelatinase-associated lipocalin concentrations. However, CD103+ TRL release positively correlated with the release of sE-cadherin, the ligand for the CD103 integrin.
CONCLUSIONS
CONCLUSIONS
Human donor kidneys release TRLs during both HMP and NMP. The release of CD103+ TRLs was associated with the loss of their ligand sE-cadherin but not with general transplant injury biomarkers.
Identifiants
pubmed: 38557650
doi: 10.1097/TP.0000000000004936
pii: 00007890-990000000-00711
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc.
Déclaration de conflit d'intérêts
D.A.H. received lecture fees and consulting fees from Astellas Pharma, AstraZeneca, Chiesi Pharma, Medincell, Novartis Pharma, Sangamo Therapeutics, and Vifor Pharma. He received grant support from Astellas Pharma, Bristol-Myers Squibb, and Chiesi Pharma (paid to his institution). D.A.H. does not have employment or stock ownership at any of these companies, and neither does he have patents or patent applications. The other authors declare no conflicts of interest.
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