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ResearchIn-Press PreviewImmunology Open Access | 10.1172/JCI172988

LAG3 regulates antibody responses in a murine model of kidney transplantation

Michael Nicosia,1 Ran Fan,1 Juyeun Lee,2 Gabriella L. All,1 Victoria Gorbacheva,1 José Ignacio Valenzuela,1 Yosuke Yamamoto,1 Ashley Beavers,1 Nina Dvorina,1 William M. Baldwin III,1 Eduardo Chuluyan,3 Motoo Araki,4 Brian T. Gaudette,1 Robert L. Fairchild,1 Booki Min,1 and Anna Valujskikh1

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Nicosia, M. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Fan, R. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Lee, J. in: JCI | PubMed | Google Scholar |

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by All, G. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Gorbacheva, V. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

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1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Yamamoto, Y. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

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1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Dvorina, N. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

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1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Chuluyan, E. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Araki, M. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Gaudette, B. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Fairchild, R. in: JCI | PubMed | Google Scholar

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Min, B. in: JCI | PubMed | Google Scholar |

1Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, United States of America

2Department of Cardiovascular & Metabolic Sciences, Cleveland Clinic, Cleveland, United States of America

3Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina

4Department of Urology, Okayama University Graduate School of Medicine, Okayama, Japan

Find articles by Valujskikh, A. in: JCI | PubMed | Google Scholar

Published May 13, 2025 - More info

J Clin Invest. https://doi.org/10.1172/JCI172988.
Copyright © 2025, Nicosia et al. This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Published May 13, 2025 - Version history
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Abstract

Lymphocyte activation gene-3 (LAG3) is a coinhibitory receptor expressed by various immune cells. While immunomodulatory potential of LAG3 is being explored in cancer and autoimmunity, there is no information on its role following organ transplantation. Our study investigated the functions of LAG3 in a mouse model of renal allograft rejection. LAG3-/- recipients rapidly reject MHC-mismatched renal allografts that are spontaneously accepted by WT recipients, with graft histology characteristic of antibody mediated rejection (ABMR). Depletion of recipient B cells but not CD8+ T cells significantly extended kidney allograft survival in LAG3-/- recipients. Treatment of WT recipients with an antagonistic LAG3 antibody enhanced anti-donor immune responses and induced kidney damage associated with chronic rejection. The studies of conditional LAG3-/- recipients and mixed bone marrow chimeras demonstrated that LAG3 expression on either T or B cells is sufficient to regulate anti-donor humoral immunity but not to induce acute allograft rejection. The numbers and proinflammatory functions of graft-infiltrating NK cells were markedly increased in LAG3-/- recipients suggesting that LAG3 also regulates the effector stage of ABMR. These results are the first to identify LAG3 as a regulator of immune responses to kidney allografts and a potential therapeutic target for ABMR prevention and treatment.

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