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Pretransplant adaptive NKG2C+ NK cells protect against cytomegalovirus infection in kidney transplant recipients
- Source :
- American Journal of Transplantation. 20:663-676
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Cytomegalovirus (CMV) infection constitutes a complication for kidney transplant recipients (KTR) and CMV-specific T cells reduce the risk of viral replication in seropositive patients. CMV promotes the adaptive differentiation and expansion of an NK cell subset, hallmarked by expression of the CD94/NKG2C receptor with additional characteristic features. We previously reported an association of pretransplant NKG2C+ NK cells with a reduced incidence of CMV infection. We have strengthened the analysis in cryopreserved peripheral blood mononuclear cells from an enlarged KTR cohort (n = 145) with homogeneous immunosuppression, excluding cases at low risk of infection (ie, CMV D-R-) or receiving antiviral prophylaxis. Moreover, adaptive NKG2C+ NK cell-associated markers (ie, NKG2A, CD57, Immunoglobulin-like transcript 2 [LIR1 or LILRB1], FcεRI γ chain, and Prolymphocytic Leukemia Zinc Finger transcription factor) as well as T lymphocyte subsets were assessed by multicolor flow cytometry. The relation of NKG2C+ NK cells with T cells specific for CMV antigens was analyzed in pretransplant patients (n = 29) and healthy controls (n = 28). Multivariate Cox regression and Kaplan-Meier analyses supported that NKG2C+ NK cells bearing adaptive markers were specifically associated with a reduced incidence of posttransplant symptomatic CMV infection; no correlation between NKG2C+ NK cells and CMV-specific T cells was observed. These results support that adaptive NKG2C+ NK cells contribute to control CMV infection in KTR. We thank Sara Alvarez and Anna Faura in the Nephrology Research Support team for coordinating sample acquisition from KTR and ESRD patients on transplant waiting list. This study was supported by grants from: Fundació la Marató deTV3 (105/U/2018); Spanish Ministry of Economy and Competitiveness MINECO-FEDER (SAF2016-80363-C2-1-Rand-C2-2-R); Spanish Ministry of Health ISCIII FIS-FEDER (PI13/00598, PI16/00617) and ISCIII RedinRen-FEDER (RD16/0009/0013).
- Subjects :
- medicine.medical_treatment
Cytomegalovirus
Basic (laboratory) research/science
Peripheral blood mononuclear cell
Flow cytometry
LILRB1
Antigen
Natural killer (NK) cells/NK receptors
medicine
Humans
Immunology and Allergy
Pharmacology (medical)
Receptor
Prolymphocytic leukemia
Immunobiology
Infectious disease
Kidney transplantation/nephrology
Transplantation
medicine.diagnostic_test
business.industry
Immunosuppression
medicine.disease
Kidney Transplantation
Killer Cells, Natural
Viral replication
Cytomegalovirus Infections
Immunology
Leukocytes, Mononuclear
Clinical research/practice
Infection and infectious agents - viral: cytomegalovirus (CMV)
business
Subjects
Details
- ISSN :
- 16006135
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- American Journal of Transplantation
- Accession number :
- edsair.doi.dedup.....25c0ee839abcc053ad7a15b14c591a68
- Full Text :
- https://doi.org/10.1111/ajt.15658