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Transcriptional characteristics of CD4+ T cells in multiple sclerosis: Relative lack of suppressive populations in blood
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- Edström, Måns, PhD, 1984- (author)
- Linköpings universitet,Klinisk immunologi,Hälsouniversitetet
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- Mellergård, Johan (author)
- Östergötlands Läns Landsting,Linköpings universitet,Neurologi,Hälsouniversitetet,Neurologiska kliniken
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- Mjösberg, Jenny (author)
- Linköpings universitet,Institutionen för klinisk och experimentell medicin,Hälsouniversitetet
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- (creator_code:org_t)
- 2010-09-16
- 2011
- English.
- In: Multiple Sclerosis Journal. - : Sage Publications. - 1352-4585 .- 1477-0970. ; 17:1, s. 57-66
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Background: Multiple sclerosis (MS) is hypothetically caused by autoreactive Th1 and Th17 cells, whereas Th2 and regulatory T cells may confer protection. The development of Th subpopulations is dependant on the expression of lineage-specific transcription factors.Objective: The aim of this study was to assess the balance of CD4(+)T cell populations in relapsing-remitting MS.Methods: Blood mRNA expression of TBX21, GATA3, RORC, FOXP3 and EBI3 was assessed in 33 patients with relapsing-remitting MS and 20 healthy controls. In addition, flow cytometry was performed to assess T lymphocyte numbers.Results: In relapsing-remitting MS, diminished expression of FOXP3 (Treg) was found (p < 0.05), despite normal numbers of CD4(+)CD25(hi)Treg. Immunoregulatory EBI3 and Th2-associated GATA3 ([a-z]+) was also decreased in MS (p < 0.005 and p < 0.05, respectively). Expression of TBX21 (Th1) and RORC (Th17) did not differ between patients and controls. Similar changes were observed when analysing beta-interferon treated (n = 12) or untreated (n = 21) patients. Analysis of transcription factor ratios, comparing TBX21/GATA3 and RORC/FOXP3, revealed an increase in the RORC/FOXP3 ratio in patients with relapsing-remitting MS (p < 0.005).Conclusion: Our findings indicate systemic defects at the mRNA level, involving downregulation of beneficial CD4(+)phenotypes. This might play a role in disease development by permitting activation of harmful T cell populations.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Reumatologi och inflammation (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Rheumatology and Autoimmunity (hsv//eng)
Keyword
- EBI3
- FOXP3
- multiple sclerosis
- RORC
- T cells
- transcription factors
- Immunology
- Immunologi
- MEDICINE
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Ernerudh, Jan
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