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NK Cells from RAG- or DCLRE1C-Deficient Patients Inhibit HCMV

1
Institute of Virology, Ulm University Medical Center, D-89081 Ulm, Germany
2
Department of Pediatrics and Adolescent Medicine, Ulm University Medical Center, D-89081 Ulm, Germany
3
Institute of Molecular Virology, Ulm University Medical Center, D-89081 Ulm, Germany
*
Author to whom correspondence should be addressed.
Microorganisms 2019, 7(11), 546; https://doi.org/10.3390/microorganisms7110546
Received: 2 September 2019 / Revised: 7 November 2019 / Accepted: 8 November 2019 / Published: 10 November 2019
(This article belongs to the Special Issue Cytomegalovirus: Biology and Infection)
The recombination-activating genes (RAGs) and the DNA cross-link repair 1C gene (DCLRE1C) encode the enzymes RAG1, RAG2 and Artemis. They are critical components of the V(D)J recombination machinery. V(D)J recombination is well known as a prerequisite for the development and antigen diversity of T and B cells. New findings suggested that RAG deficiency impacts the cellular fitness and function of murine NK cells. It is not known whether NK cells from severe combined immunodeficiency (SCID) patients with defective RAGs or DCLRE1C (RAGs/DCLRE1C-NK) are active against virus infections. Here, we evaluated the anti-HCMV activity of RAGs/DCLRE1C-NK cells. NK cells from six SCID patients were functional in inhibiting HCMV transmission between cells in vitro. We also investigated the expansion of HCMV-induced NK cell subset in the RAG- or DCLRE1C-deficient patients. A dynamic expansion of NKG2C+ NK cells in one RAG-2-deficient patient was observed post HCMV acute infection. Our study firstly reveals the antiviral activity of human RAGs/ DCLRE1C-NK cells. View Full-Text
Keywords: human cytomegalovirus; natural killer cell; severe combined immunodeficiency human cytomegalovirus; natural killer cell; severe combined immunodeficiency
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Wu, Z.; Subramanian, N.; Jacobsen, E.-M.; Laib Sampaio, K.; van der Merwe, J.; Hönig, M.; Mertens, T. NK Cells from RAG- or DCLRE1C-Deficient Patients Inhibit HCMV. Microorganisms 2019, 7, 546.

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