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Targeting CD38 immunometabolic checkpoint improves metabolic fitness and cognition in a mouse model of Alzheimer’s disease

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Protective immunity, essential for brain maintenance and repair, may be compromised in Alzheimer’s disease (AD). Here, using high-dimensional single-cell mass cytometry, we find a unique immunometabolic signature in circulating CD4+ T cells preceding symptom onset in individuals with familial AD, featured by the elevation of CD38 expression. Using female 5xFAD mice, a mouse model of AD, we show that treatment with an antibody directed to CD38 leads to restored metabolic fitness, improved cognitive performance, and attenuated local neuroinflammation. Comprehensive profiling across distinct immunological niches in 5xFAD mice, reveals a high level of disease-associated CD4+ T cells that produce IL-17A in the dural meninges, previously linked to cognitive decline. Targeting CD38 leads to abrogation of meningeal TH17 immunity and cortical IL-1β, breaking the negative feedback loop between these two compartments. Taken together, the present findings suggest CD38 as an immunometabolic checkpoint that could be adopted as a pre-symptomatic biomarker for early diagnosis of AD, and might also be therapeutically targeted alone or in combination with other immunotherapies for disease modification.

Original languageEnglish
Article number3736
Number of pages17
JournalNature Communications
Volume16
DOIs
Publication statusPublished - 20 Apr 2025

Funding

We thank the members of the Schwartz lab and Weizmann Institute of Science for insightful discussions, and apologize to colleagues whose work was not included due to space constraints. We especially thank R. Valdés-Mas for providing critical feedback on bioinformatic analyses, C. Raanan, I. Biton, O. Rosenberg, N. Stettner, T. Mehlman, and A. Brandis for technical support, and S. Schwarzbaum for proofreading the manuscript. J.M.P.R. and G.C. received a Senior Postdoctoral Fellowship from the Weizmann Institute of Science. M.A.A. received a postdoctoral fellowship from Fundación Ramón Areces. The work was supported by an Advanced European Research Council grant (N° 741744), the Israel Science Foundation (ISF, grant No. 991/16), the ISF-Legacy Heritage Biomedical Science Partnership (grant No. 135 4/15), the Thompson Foundation and the Adelis Foundation (given to M.S.). We thank the members of the Schwartz lab and Weizmann Institute of Science for insightful discussions, and apologize to colleagues whose work was not included due to space constraints. We especially thank R. Valdés-Mas for providing critical feedback on bioinformatic analyses, C. Raanan, I. Biton, O. Rosenberg, N. Stettner, T. Mehlman, and A. Brandis for technical support, and S. Schwarzbaum for proofreading the manuscript. J.M.P.R. and G.C. received a Senior Postdoctoral Fellowship from the Weizmann Institute of Science. M.A.A. received a postdoctoral fellowship from Fundación Ramón Areces. The work was supported by an Advanced European Research Council grant (N° 741744), the Israel Science Foundation (ISF, grant No. 991/16), the ISF-Legacy Heritage Biomedical Science Partnership (grant No. 135 4/15), the Thompson Foundation and the Adelis Foundation (given to M.S.).

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Biochemistry,Genetics and Molecular Biology
  • General Physics and Astronomy

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