Development of Three Different NK Cell Subpopulations during Immune Reconstitution after Pediatric Allogeneic Hematopoietic Stem Cell Transplantation: Prognostic Markers in GvHD and Viral Infections

Frontiers in Immunology
Sabine HueneckeMelanie Bremm

Abstract

Natural killer (NK) cells play an important role following allogeneic hematopoietic stem cell transplantation (HSCT) exerting graft-versus-leukemia/tumor effect and mediating pathogen-specific immunity. Although NK cells are the first donor-derived lymphocytes reconstituting post-HSCT, their distribution of CD56(++)CD16(-) (CD56(bright)), CD56(++)CD16(+) (CD56(intermediate=int)), and CD56(+)CD16(++) (CD56(dim)) NK cells is explicitly divergent from healthy adults, but to some extent comparable to the NK cell development in early childhood. The proportion of CD56(bright)/CD56(int)/CD56(dim) changed from 15/8/78% in early childhood to 6/4/90% in adults, respectively. Within this study, we first compared the NK cell reconstitution post-HSCT to reference values of NK cell subpopulations of healthy children. Afterward, we investigated the reconstitution of NK cell subpopulations post-HSCT in correlation to acute graft versus host disease (aGvHD) and chronic graft versus host disease (cGvHD) as well as to viral infections. Interestingly, after a HSCT follow-up phase of 12 months, the distribution of NK cell subpopulations largely matched the 50th percentile of the reference range for healthy individuals. Patients suffering from aGvHD...Continue Reading

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Citations

Apr 10, 2018·Expert Review of Clinical Immunology·Hong-Gang RenSophie Paczesny
Sep 28, 2018·Bone Marrow Transplantation·Shahrzad BakhtiarPeter Bader
May 11, 2017·Frontiers in Immunology·Federico SimonettaRobert S Negrin
Jan 9, 2021·Journal of Immunological Methods·Melanie BremmSabine Huenecke

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Methods Mentioned

BETA
flow cytometry

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