Journal article
Role of NK-Like CD8 + T Cells during Asymptomatic Borrelia burgdorferi Infection
Infection and immunity, Vol.90(5), e0055521
04/13/2022
DOI: 10.1128/iai.00555-21
PMCID: PMC9119074
PMID: 35416707
Abstract
Lyme disease (LD) due to Borrelia burgdorferi is the most prevalent vector-borne disease in the United States. There is a poor understanding of how immunity contributes to bacterial control, pathology, or both during LD. Dogs in an area of endemicity were screened for B. burgdorferi and
exposure and stratified according to seropositivity, presence of LD symptoms, and doxycycline treatment. Significantly elevated serum interleukin-21 (IL-21) and increased circulating CD3
CD94
lymphocytes with an NK-like CD8
T cell phenotype were predominant in asymptomatic dogs exposed to B. burgdorferi. Both CD94
T cells and CD3
CD94
lymphocytes, corresponding to NK cells, from symptomatic dogs expressed gamma interferon (IFN-γ) at a 3-fold-higher frequency upon stimulation with B. burgdorferi than the same subset among endemic controls. Surface expression of activating receptor NKp46 was reduced on CD94
T cells from LD, compared to cells after doxycycline treatment. A higher frequency of NKp46-expressing CD94
T cells correlated with significantly increased peripheral blood mononuclear cell (PBMC) cytotoxic activity via calcein release assay. PBMCs from dogs with symptomatic LD showed significantly reduced killing ability compared with endemic control PBMCs. An elevated NK-like CD8
T cell response was associated with protection against development of clinical LD, while excess IFN-γ was associated with clinical disease.
Details
- Title: Subtitle
- Role of NK-Like CD8 + T Cells during Asymptomatic Borrelia burgdorferi Infection
- Creators
- Breanna M Scorza - University of Iowa, EpidemiologyKurayi G Mahachi - University of IowaArin D Cox - Department of Epidemiology, University of Iowagrid.214572.7, Iowa City, Iowa, USAAngela J Toepp - University of Iowa, EpidemiologyDanielle Pessoa-Pereira - University of Iowa, EpidemiologyPhyllis Tyrrell - IDEXX Laboratories, Inc., Westbrook, Maine, USAJesse Buch - IDEXX Laboratories, Inc., Westbrook, Maine, USAJennifer A Foltz - Nationwide Children's HospitalDean Lee - Nationwide Children's HospitalChristine A Petersen - University of Iowa, Internal Medicine
- Resource Type
- Journal article
- Publication Details
- Infection and immunity, Vol.90(5), e0055521
- DOI
- 10.1128/iai.00555-21
- PMID
- 35416707
- PMCID
- PMC9119074
- NLM abbreviation
- Infect Immun
- ISSN
- 0019-9567
- eISSN
- 1098-5522
- Grant note
- T32 AI007260 / NIAID NIH HHS P30 CA086862 / NCI NIH HHS
- Language
- English
- Date published
- 04/13/2022
- Academic Unit
- Epidemiology; Internal Medicine
- Record Identifier
- 9984242754502771
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