Transcription Factor 7 Limits Regulatory T Cell Generation in the Thymus
(2015) In Journal of Immunology 195(7). p.70-3058- Abstract
Regulatory T cells (Tregs) differentiate in the thymus, but the mechanisms that control this process are not fully understood. We generated a comprehensive quantitative and differential proteome of murine Tregs and conventional T cells. We identified 5225 proteins, 164 of which were differentially expressed in Tregs. Together with the comparative analysis of proteome and gene expression data, we identified TCF7 as a promising candidate. Genetic elimination of transcription factor 7 (TCF7) led to increased fractions of Tregs in the thymus. Reduced levels of TCF7, found in the heterozygote, resulted in a greater potential for Treg precursors to differentiate into the Treg lineage. In contrast, activation of TCF7 through β-catenin had the... (More)
Regulatory T cells (Tregs) differentiate in the thymus, but the mechanisms that control this process are not fully understood. We generated a comprehensive quantitative and differential proteome of murine Tregs and conventional T cells. We identified 5225 proteins, 164 of which were differentially expressed in Tregs. Together with the comparative analysis of proteome and gene expression data, we identified TCF7 as a promising candidate. Genetic elimination of transcription factor 7 (TCF7) led to increased fractions of Tregs in the thymus. Reduced levels of TCF7, found in the heterozygote, resulted in a greater potential for Treg precursors to differentiate into the Treg lineage. In contrast, activation of TCF7 through β-catenin had the opposite effect. TCF7 levels influenced the required TCR signaling strength of Treg precursors, and TCF7 deficiency broadened the repertoire and allowed lower TCR affinities to be recruited into the Treg lineage. FOXP3 was able to repress TCF7 protein expression. In summary, we propose a regulatory role for TCF7 in limiting access to the Treg lineage.
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- author
- Barra, Melanie M ; Richards, David M ; Hansson, Jenny LU ; Hofer, Ann-Cathrin ; Delacher, Michael ; Hettinger, Jan ; Krijgsveld, Jeroen and Feuerer, Markus
- organization
- publishing date
- 2015-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Animals, Cell Lineage, Cell Proliferation, Forkhead Transcription Factors, Gene Expression Profiling, Hematopoiesis, Hepatocyte Nuclear Factor 1-alpha, Mice, Mice, Inbred C57BL, Mice, Knockout, Proteome, Signal Transduction, T-Lymphocytes, Regulatory, Thymus Gland, beta Catenin
- in
- Journal of Immunology
- volume
- 195
- issue
- 7
- pages
- 13 pages
- publisher
- American Association of Immunologists
- external identifiers
-
- scopus:84942428185
- pmid:26324778
- ISSN
- 1550-6606
- DOI
- 10.4049/jimmunol.1500821
- language
- English
- LU publication?
- no
- id
- 87f91d95-404c-4efe-8542-11b16ed77ff2
- date added to LUP
- 2016-04-19 10:17:19
- date last changed
- 2024-07-12 03:58:00
@article{87f91d95-404c-4efe-8542-11b16ed77ff2, abstract = {{<p>Regulatory T cells (Tregs) differentiate in the thymus, but the mechanisms that control this process are not fully understood. We generated a comprehensive quantitative and differential proteome of murine Tregs and conventional T cells. We identified 5225 proteins, 164 of which were differentially expressed in Tregs. Together with the comparative analysis of proteome and gene expression data, we identified TCF7 as a promising candidate. Genetic elimination of transcription factor 7 (TCF7) led to increased fractions of Tregs in the thymus. Reduced levels of TCF7, found in the heterozygote, resulted in a greater potential for Treg precursors to differentiate into the Treg lineage. In contrast, activation of TCF7 through β-catenin had the opposite effect. TCF7 levels influenced the required TCR signaling strength of Treg precursors, and TCF7 deficiency broadened the repertoire and allowed lower TCR affinities to be recruited into the Treg lineage. FOXP3 was able to repress TCF7 protein expression. In summary, we propose a regulatory role for TCF7 in limiting access to the Treg lineage.</p>}}, author = {{Barra, Melanie M and Richards, David M and Hansson, Jenny and Hofer, Ann-Cathrin and Delacher, Michael and Hettinger, Jan and Krijgsveld, Jeroen and Feuerer, Markus}}, issn = {{1550-6606}}, keywords = {{Animals; Cell Lineage; Cell Proliferation; Forkhead Transcription Factors; Gene Expression Profiling; Hematopoiesis; Hepatocyte Nuclear Factor 1-alpha; Mice; Mice, Inbred C57BL; Mice, Knockout; Proteome; Signal Transduction; T-Lymphocytes, Regulatory; Thymus Gland; beta Catenin}}, language = {{eng}}, month = {{10}}, number = {{7}}, pages = {{70--3058}}, publisher = {{American Association of Immunologists}}, series = {{Journal of Immunology}}, title = {{Transcription Factor 7 Limits Regulatory T Cell Generation in the Thymus}}, url = {{http://dx.doi.org/10.4049/jimmunol.1500821}}, doi = {{10.4049/jimmunol.1500821}}, volume = {{195}}, year = {{2015}}, }