Mechanisms of peripheral immune tolerance, or how regulatory T-lymphocytes restrain the immune system from attacking its own body
Nobel Prize in Physiology or Medicine for 2025
DOI:
https://doi.org/10.15407/visn2025.12.003Keywords:
Nobel Prize in Physiology or Medicine 2025, Mary E. Brunkow, Fred Ramsdell, Shimon Sakaguchi, T-lymphocytes, immune system.Abstract
The 2025 Nobel Prize in Physiology or Medicine was awarded to three researchers: molecular biologist Mary E. Brunkow from the Institute for Systems Biology in Seattle (USA), scientific advisor in the biotechnology company Sonoma Biotherapeutics (USA) Fred Ramsdell, and Japanese professor of immunology at University of Osaka Shimon Sakaguchi for “discoveries concerning peripheral immune tolerance”. As noted in a press release from the Nobel Committee, this year’s laureates identified the immune system’s security guards, regulatory T cells, thus laying the foundation for a new field of research. The discoveries have also led to the “development of potential medical treatments that are now being evaluated in clinical trials. The hope is to be able to treat or cure autoimmune diseases, provide more effective cancer treatments and prevent serious complications after stem cell transplants”.
Cite this article:
Romaniuk S.I., Komisarenko S.V. Mechanisms of peripheral immune tolerance, or how regulatory T-lymphocytes restrain the immune system from attacking its own body (Nobel Prize in Physiology or Medicine for 2025). Visn. Nac. Akad. Nauk Ukr. 2025. (12): 3—19. https://doi.org/10.15407/visn2025.12.003
References
Owen R.D. Immunogenetic consequences of vascular anastomoses between bovine twins. Science. 1945. 102(2651): 400—401. https://doi.org/10.1126/science.102.2651.400
Hašek M. Parabiosis of birds during their embryonic development. Chekhoslovatskaia Biol. 1953. 2(1): 29—31.
Billingham R.E., Brent L., Medawar P.B. “Actively acquired tolerance” of foreign cells. Nature. 1953. 172(4379): 603—607. https://doi.org/10.1038/172603a0
Burnet F.M. The clonal selection theory of acquired immunity. Cambridge: University Press, 1959.
Burnet F.M. The immunological significance of the thymus: an extension of the clonal selection theory of immunity. Australas. Ann. Med. 1962. 11: 79—91. https://doi.org/10.1111/imj.1962.11.2.79
Miller J.F. Analysis of the thymus influence in leukaemogenesis. Nature. 1961. 191: 248—249. https://doi.org/10.1038/191248a0
Kappler J.W., Roehm N., Marrack P. T cell tolerance by clonal elimination in the thymus. Cell. 1987. 49(2): 273—280. https://doi.org/10.1016/0092-8674(87)90568-x
Anderson M.S., Venanzi E.S., Klein L., Chen Z., Berzins S.P., Turley S.J., von Boehmer H., Bronson R., Dierich A., Benoist C. et al. Projection of an immunological self shadow within the thymus by the aire protein. Science. 2002. 298(5597): 1395—1401. https://doi.org/10.1126/science.1075958
Karlsson Hedestam G.B. Immune tolerance. The identification of regulatory T cells and FOXP3. https://www.nobelprize.org/uploads/2025/10/advanced-medicineprize2025.pdf
Tonegawa S. Somatic generation of antibody diversity. Nature. 1983. 302(5909): 575—581. https://doi.org/10.1038/302575a0
Hedrick S.M., Cohen D.I., Nielsen E.A., Davis M.M. Isolation of cDNA clones encoding T cell-specific membrane-associated proteins. Nature. 1984. 308(5955): 149—153. https://doi.org/10.1038/308149a0
Yanagi Y., Yoshikai Y., Leggett K., Clark S.P., Aleksander I., Mak T.W. A human T cell-specific cDNA clone encodes a protein having extensive homology to immunoglobulin chains. Nature. 1984. 308(5955): 145—149. https://doi.org/10.1038/308145a0
Zinkernagel R.M., Doherty P.C. Restriction of in vitro T cell-mediated cytotoxicity in lymphocytic choriomeningitis within a syngeneic or semiallogeneic system. Nature. 1974. 248(5450): 701—702. https://doi.org/10.1038/248701a0
Gershon R.K., Kondo K. Cell interactions in the induction of tolerance: the role of thymic lymphocytes. Immunology. 1970. 18(5): 723—737.
Nishizuka Y., Sakakura T. Thymus and reproduction: sex-linked dysgenesia of the gonad after neonatal thymectomy in mice. Science. 1969. 166(3906): 753—755. https://doi.org/10.1126/science.166.3906.753
Penhale W.J., Irvine W.J., Inglis J.R., Farmer A. Thyroiditis in T cell-depleted rats: suppression of the autoallergic response by reconstitution with normal lymphoid cells. Clin. Exp. Immunol. 1976. 25(1): 6—16.
Sakaguchi S., Takahashi T., Nishizuka Y. Study on cellular events in postthymectomy autoimmune oophoritis in mice. I. Requirement of Lyt-1 effector cells for oocytes damage after adoptive transfer. J. Exp. Med. 1982. 156(6): 1565—1576. https://doi.org/10.1084/jem.156.6.1565
Powrie F., Mason D. OX-22 high CD4+ T cells induce wasting disease with multiple organ pathology: prevention by the OX-22 low subset. J. Exp. Med. 1990. 172(6): 1701—1708. https://doi.org/10.1084/jem.172.6.1701
Sakaguchi S., Sakaguchi N., Asano M., Itoh M., Toda M. Immunologic self-tolerance maintained by activated T cells expressing IL-2 receptor alpha-chains (CD25). Breakdown of a single mechanism of self-tolerance causes various autoimmune diseases. J. Immunol. 1995. 155(3): 1151—1164.
Hall B.M., Jelbart M.E., Dorsch S.E. Suppressor T cells in rats with prolonged cardiac allograft survival after treatment with cyclosporine. Transplantation. 1984. 37(6): 595—600. https://doi.org/10.1097/00007890-198406000-00014
Sakaguchi S. Regulatory T cells: key controllers of immunologic self-tolerance. Cell. 2000. 101(5): 455—458. https://doi.org/10.1016/s0092-8674(00)80856-9
Takahashi T., Tagami T., Yamazaki S., Uede T., Shimizu J., Sakaguchi N., Mak T.W., Sakaguchi S. Immunologic self-tolerance maintained by CD25(+)CD4(+) regulatory T cells constitutively expressing cytotoxic T lymphocyte-associated antigen 4. J. Exp. Med. 2000. 192(2): 303—310. https://doi.org/10.1084/jem.192.2.303
Brunkow M.E., Jeffery E.W., Hjerrild K.A., Paeper B., Clark L.B., Yasayko S.A., Wilkinson J.E., Galas D., Ziegler S.F., Ramsdell F. Disruption of a new forkhead/winged-helix protein, scurfin, results in the fatal lymphoproliferative disorder of the scurfy mouse. Nat. Genet. 2001. 27(1): 68—73. https://doi.org/10.1038/83784
Bennett C.L., Christie J., Ramsdell F., Brunkow M.E., Ferguson P.J., Whitesell L., Kelly T.E., Saulsbury F.T., Chance P.F., Ochs H.D. The immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome (IPEX) is caused by mutations of FOXP3. Nat. Genet. 2001. 27(1): 20—21. https://doi.org/10.1038/83713
Wildin R.S., Ramsdell F., Peake J., Faravelli F., Casanova J.L., Buist N., Levy-Lahad E., Mazzella M., Goulet O., Perroni L. et al. X-linked neonatal diabetes mellitus, enteropathy and endocrinopathy syndrome is the human equivalent of mouse scurfy. Nat. Genet. 2001. 27(1): 18—20. https://doi.org/10.1038/83707
Chatila T.A., Blaeser F., Ho N., Lederman H.M., Voulgaropoulos C., Helms C., Bowcock A.M. JM2, encoding a fork head-related protein, is mutated in X-linked autoimmunity-allergic disregulation syndrome. J. Clin. Invest. 2000. 106(12): R75—R81. https://doi.org/10.1172/JCI11679
Hori S., Nomura T., Sakaguchi S. Control of regulatory T cell development by the transcription factor Foxp3. Science. 2003. 299(5609): 1057—1061. https://doi.org/10.1126/science.1079490
Khattri R., Cox T., Yasayko S.A., Ramsdell F. An essential role for Scurfin in CD4+CD25+ T regulatory cells. Nat. Immunol. 2003. 4(4): 337—342. https://doi.org/10.1038/ni909
Fontenot J.D., Gavin M.A., Rudensky A.Y. Foxp3 programs the development and function of CD4+CD25+ regulatory T cells. Nat. Immunol. 2003. 4(4): 330—336. https://doi.org/10.1038/ni904
Kim J.M., Rasmussen J.P., Rudensky A.Y. Regulatory T cells prevent catastrophic autoimmunity throughout the lifespan of mice. Nat. Immunol. 2007. 8(2): 191—197. https://doi.org/10.1038/ni1428
Grover P., Goel P.N., Greene M.I. Regulatory T cells: regulation of identity and function. Front. Immunol. 2021. 12: 750542. https://doi.org/10.3389/fimmu.2021.750542
Chen K.Y., Kibayashi T., Giguelay A., Hata M., Nakajima S., Mikami N., Takeshima Y., Ichiyama K., Omiya R., Ludwig L.S. et al. Genome-wide CRISPR screen in human T cells reveals regulators of FOXP3. Nature. 2025. 642(8066): 191—200. https://doi.org/10.1038/s41586-025-08795-5
Brown C.C., Rudensky A.Y. Spatiotemporal regulation of peripheral T cell tolerance. Science. 2023. 380(6644): 472—478. https://doi.org/10.1126/science.adg6425
Naddaf M., Gibney E. Medicine Nobel goes to scientists who revealed secrets of immune system 'regulation'. Nature. 2025. 646(8085): 521—522. https://doi.org/10.1038/d41586-025-03193-3
Silverberg J.I., Rosmarin D., Chovatiya R., Bieber T., Schleicher S., Beck L., Gooderham M., Chaudhry S., Fanton C., Yu D. et al. The regulatory T cell-selective interleukin-2 receptor agonist rezpegaldesleukin in the treatment of inflammatory skin diseases: two randomized, double-blind, placebo-controlled phase 1b trials. Nat. Commun. 2024. 15(1): 9230. https://doi.org/10.1038/s41467-024-53384-1
Bender C., Wiedeman A.E., Hu A., Ylescupidez A., Sietsema W.K., Herold K.C., Griffin K.J., Gitelman S.E., Long S.A.; T-Rex Study Group et al. A phase 2 randomized trial with autologous polyclonal expanded regulatory T cells in children with new-onset type 1 diabetes. Sci. Transl. Med. 2024. 16(746): eadn2404. https://doi.org/10.1126/scitranslmed.adn2404
Wardell C.M., Boardman D.A., Levings M.K. Harnessing the biology of regulatory T cells to treat disease. Nat. Rev. Drug Discov. 2025. 24(2): 93—111. https://doi.org/10.1038/s41573-024-01089-x
Roider H.G., Hoff S., Tseng S.Y., Berndt S., Trautwein M., Filarsky K., Gritzan U., Camps J., Nadler W.M., Grudzinska-Goebel J. et al. Selective depletion of tumor-infiltrating regulatory T cells with BAY 3375968, a novel Fc-optimized anti-CCR8 antibody. Clin. Exp. Med. 2024. 24(1): 122. https://doi.org/10.1007/s10238-024-01362-8
Wardell C.M., Fung V.C.W., Chen E., Haque M., Tan D.F.H., Leca M., Gillies J., Spanier J.A., Mojibian M., Fife B.T. et al. CAR Treg cells mediate linked suppression and infectious tolerance in islet transplantation in mice. Sci. Transl. Med. 2025. 17(812): eadp6519. https://doi.org/10.1126/scitranslmed.adp6519
Porret R., Alcaraz-Serna A., Peter B., Bernier-Latmani J., Cecchin R., Alfageme-Abello O., Ermellino L., Hafezi M., Pace E., du Pré M.F. et al. T cell receptor precision editing of regulatory T cells for celiac disease. Sci. Transl. Med. 2025. 17(790): eadr8941. https://doi.org/10.1126/scitranslmed.adr8941
Wang L., Liang Y., Zhao C., Ma P., Zeng S., Ju D., Zhao M., Yu M., Shi Y. Regulatory T cells in homeostasis and disease: molecular mechanisms and therapeutic potential. Signal Transduct. Target. Ther. 2025. 10(1): 345. https://doi.org/10.1038/s41392-025-02326-4