Lower expression levels of the programmed death 1 receptor on CD4+CD25+ T cells and correlation with the PD-1.3A genotype in patients with systemic lupus erythematosus

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Kristjánsdóttir, Helga,1966-Uppsala universitet,Medicinsk genetik,Genetics of inflammatory diseases (author)

Lower expression levels of the programmed death 1 receptor on CD4+CD25+ T cells and correlation with the PD-1.3A genotype in patients with systemic lupus erythematosus

Article/chapterEnglish2010

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2010-02-22
Wiley,2010
printrdacarrier

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LIBRIS-ID:oai:DiVA.org:uu-107272
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-107272URI
https://doi.org/10.1002/art.27417DOI
http://kipublications.ki.se/Default.aspx?queryparsed=id:120918534URI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

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OBJECTIVE.: A genetic polymorphism, PD1.3A, in the PDCD1 gene encoding the co-inhibitory immunoreceptor PD-1, has been associated with SLE. The aim of the study was to assess PD-1 receptor expression in SLE patients, relatives and controls and correlate with PD-1.3A. METHODS.: Icelandic and Swedish SLE patients, relatives and controls were studied. PBMCs were stimulated with alphaCD3/CD28 and PD-1 expression analyzed by flow cytometry. PD-1.3A/G genotyping was performed by PCR-RFLP. RESULTS: I. PD-1 expression on PBMCs was induced after stimulation, by 2.1-fold in SLE patients, 3.1-fold in relatives and 5.1-fold in controls.II. The frequency of PD-1+ cells was significantly lower in SLE patients compared to relatives and controls. PD-1 expression on PD-1+ cells was significantly lower in SLE patients and relatives.III. PD-1 expression on CD4+CD25+ T cells was significantly lower in SLE patients and relatives.IV. PD-1 expression was significantly higher on CD25(high) compared to CD25(intermediate) and (low) cells.V. PD-1 expression on CD25(high) and CD25(intermediate) cells was significantly lower in SLE patients compared to controls.VI. PD-1 was expressed on both FoxP3- and FoxP3+ cells.VII. Lower PD-1 expression was significantly correlated with the PD-1.3A/G genotype. CONCLUSION.: The study demonstrates significantly lower PD-1 receptor expression in SLE patients and relatives and a significant correlation of lower PD-1 expression with the PD-1.3A allele. We conclude that PD-1.3A may be contributory to abnormalities in PD-1 receptor expression on CD4+CD25+ T-cells in SLE, providing support for an important role for the PD-1 pathway in SLE and possibly other autoimmune diseases.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Immunologi inom det medicinska området hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Immunology in the medical area hsv//eng
SLE
PD-1.3A
self-tolerance
Immunology
Immunologi
Immunologi
Immunology

Added entries (persons, corporate bodies, meetings, titles ...)

Steinsson, Kristjan (author)
Gunnarsson, IvaKarolinska Institutet (author)
Gröndal, Gerdur (author)
Erlendsson, Kristjan (author)
Alarcón-Riquelme, Marta E.Uppsala universitet,Medicinsk genetik (author)
Uppsala universitetMedicinsk genetik (creator_code:org_t)

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In:Arthritis and Rheumatism: Wiley62:6, s. 1702-17110004-35911529-0131

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