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Proinflammatory Features of Stem Cell–like Memory T Cells from Human Patients with Rheumatoid Arthritis

Ye Ji Lee, Eun Hye Park, Jun Won Park, Kyeong Cheon Jung and Eun Bong Lee
J Immunol June 23, 2021, ji2000814; DOI: https://doi.org/10.4049/jimmunol.2000814
Ye Ji Lee
*Graduate Course of Translational Medicine (Immunology), Seoul National University College of Medicine, Seoul, Korea;
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Eun Hye Park
†Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea;
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Jun Won Park
†Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea;
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Kyeong Cheon Jung
‡Department of Pathology, Seoul National University College of Medicine, Seoul, Korea; and
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Eun Bong Lee
†Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea;
§Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
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Key Points

  • The percentage of Tscm among T cells is higher in RA than in HC.

  • CD4+ Tscm cells in RA are more easily activated by IL-6 than those from HCs.

  • Tscm cells of RA show distinct transcriptomic features from those of HCs.

Abstract

Stem cell–like memory T (Tscm) cells are a subset of memory T cells that have characteristics of stem cells. The characteristics of Tscm cells in patients with rheumatoid arthritis (RA) are not well known. The percentage of CD4+ and CD8+ Tscm cells in PBMCs and synovial fluid mononuclear cells was measured. After confirming the stem cell nature of Tscm cells, we examined their pathogenicity in RA patients and healthy controls (HCs) by assessing T cell activation markers and cytokine secretion after stimulation with anti-CD3/CD28 beads and/or IL-6. Finally, RNA transcriptome patterns in Tscm cells from RA patients were compared with those in HCs. In this study, the percentage of CD4+ and CD8+ Tscm cells in total T cells was significantly higher in RA patients than in HCs. Tscm cells self-proliferated and differentiated into memory and effector T cell subsets when stimulated. Compared with Tscm cells from HCs, Tscm cells from RA patients were more easily activated by anti-CD3/CD28 beads augmented by IL-6. Transcriptome analyses revealed that Tscm cells from RA patients showed a pattern distinct from those in HCs; RA-specific transcriptome patterns were not completely resolved in RA patients in complete clinical remission. In conclusion, Tscm cells from RA patients show a transcriptionally distinct pattern and are easily activated to produce inflammatory cytokines when stimulated by TCRs in the presence of IL-6. Tscm cells can be a continuous source of pathogenicity in RA.

Footnotes

  • Author contributions: All authors participated in drafting the article or making critical revisions, and all authors approved the final version for submission. E.B.L. and Y.J.L. had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of data analysis. Study conception and design: E.B.L., Y.J.L.; data acquisition: E.B.L., Y.J.L.; data analysis and interpretation: Y.J.L., E.H.P., J.W.P., K.C.J., and E.B.L.

  • This work was supported by a National Research Foundation of Korea grant funded by the Korean government (Ministry of Science and ICT) (2021R1A2C2004874) and by Grant 0320200170 from the Seoul National University Hospital Research Fund.

  • The online version of this article contains supplemental material.

  • Received July 14, 2020.
  • Accepted May 6, 2021.
  • Copyright © 2021 by The American Association of Immunologists, Inc.

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The Journal of Immunology: 208 (11)
The Journal of Immunology
Vol. 208, Issue 11
1 Jun 2022
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Proinflammatory Features of Stem Cell–like Memory T Cells from Human Patients with Rheumatoid Arthritis
Ye Ji Lee, Eun Hye Park, Jun Won Park, Kyeong Cheon Jung, Eun Bong Lee
The Journal of Immunology June 23, 2021, ji2000814; DOI: 10.4049/jimmunol.2000814

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Proinflammatory Features of Stem Cell–like Memory T Cells from Human Patients with Rheumatoid Arthritis
Ye Ji Lee, Eun Hye Park, Jun Won Park, Kyeong Cheon Jung, Eun Bong Lee
The Journal of Immunology June 23, 2021, ji2000814; DOI: 10.4049/jimmunol.2000814
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