Cited by 349Sirtuins and Resveratrol in MedicineBiochemical and Molecular ResearchCalcium signaling and nucleotide metabolism

CD38 ecto-enzyme in immune cells is induced during aging and regulates NAD+ and NMN levels

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Chini, Claudia C. S., Peclat, Thais R., Warner, Gina M., Kashyap, Sonu, Espindola-Netto, Jair Machado, de Oliveira, Guilherme C., Gomez, Lilian S., Hogan, Kelly A. +24 more·2020·Nature Metabolism

Abstract

Decreased NAD+ levels have been shown to contribute to metabolic dysfunction during aging. NAD+ decline can be partially prevented by knockout of the enzyme CD38. However, it is not known how CD38 is regulated during aging, and how its ecto-enzymatic activity impacts NAD+ homeostasis. Here we show that an increase in CD38 in white adipose tissue (WAT) and the liver during aging is mediated by accumulation of CD38+ immune cells. Inflammation increases CD38 and decreases NAD+. In addition, senescent cells and their secreted signals promote accumulation of CD38+ cells in WAT, and ablation of senescent cells or their secretory phenotype decreases CD38, partially reversing NAD+ decline. Finally, blocking the ecto-enzymatic activity of CD38 can increase NAD+ through a nicotinamide mononucleotide (NMN)-dependent process. Our findings demonstrate that senescence-induced inflammation promotes accumulation of CD38 in immune cells that, through its ecto-enzymatic activity, decreases levels of NMN and NAD+.

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  • Senescent cells can decrease NAD+ via SASP activation of CD38 on macrophages, and senolytics partially restore tissue NAD+ levels.

    “Senescent cells can decrease NAD+ through SASP activation of the NAD-degrading enzyme CD38 on the surface of macrophages and, remarkably, senolytics partially restore tissue NAD+ levels139,140.”

    From Cellular senescence and senolytics: the path to the clinic (2022) · cites this paper as [139]

    The Results section on SASP-induced CD38 reports that secretions from senescent cells increased CD38 activity in macrophages and lowered NAD+ in mouse white adipose tissue. The Results section on cellular senescence reports that clearing senescent cells partly restored NAD+ in that tissue, but the experiment used genetic ablation in INK-ATTAC mice, not a senolytic treatment. The Discussion also notes that NAD+ recovery was much greater in the liver. (LLM, conf=0.88)

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  • During ageing and obesity, SASP factors from senescent adipose cells upregulate CD38 in adipose immune cells, lowering NAD+ levels and worsening metabolic dysfunction and fitness.

    “Upon ageing and obesity, SASP factors from the senescent cells upregulate CD38 in adipose immune cells, thereby decreasing NAD+ levels, which results in increased metabolic dysfunction and a decline in overall fitness127.”

    From SenNet recommendations for detecting senescent cells in different tissues (2024) · cites this paper as [127]

    The Results section, “Accumulation of CD38 in vivo can be induced by SASP” (page unavailable), reports that conditioned media from senescent pre-adipocytes increased macrophage CD38 and lowered NAD+ in mouse white adipose tissue. The Introduction links age-related NAD+ decline to metabolic dysfunction and reduced overall fitness. The paper does not establish this SASP–CD38 pathway in obesity or show that the pathway itself worsens metabolic function or fitness. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Chini and colleagues reported similar findings consistent with inflammaging as a driver of NAD decline during ageing.

    “Chini and colleagues have reported similar findings, which are consistent with the role of inflammaging as a driver of NAD decline during ageing69.”
  • CD38-overexpressing M1-like macrophages are activated directly by inflammatory cytokines secreted by senescent cells.

    “these CD38-overexpressing M1-like macrophages are activated directly by inflammatory cytokines secreted by senescent cells (discussed in more detail later)45,105,106”
  • In ageing, declining NAD+ levels are associated with increased accumulation of proinflammatory M1-like resident macrophages in liver and fat, characterized by increased CD38 expression and heightened NADase activity.

    “In ageing, declining NAD+ levels are associated with increased accumulation of proinflammatory M1-like resident macrophages in the liver and fat, which are characterized by increased expression of CD38 and heightened NADase activity45,105.”

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Authors
Chini, C. C. S., Peclat, T. R., Warner, G. M., Kashyap, S., Espindola-Netto, J. M., de Oliveira, G. C., Gomez, L. S., Hogan, K. A., Tarragó, M. G., Puranik, A. S., Agorrody, G., Thompson, K. L., Dang, K., Clarke, S., Childs, B. G., Kanamori, K. S., Witte, M. A., Vidal, P., Kirkland, A. L., De Cecco, M., Chellappa, K., McReynolds, M. R., Jankowski, C., Tchkonia, T., Kirkland, J. L., Sedivy, J. M., van Deursen, J. M., Baker, D. J., van Schooten, W., Rabinowitz, J. D., Baur, J. A., & Chini, E. N.
Affiliations
  • Mayo Clinic (US)
  • University of Pennsylvania (US)
  • Princeton University (US)
  • Brown University (US)
Corresponding author
Chini, Eduardo N.
Venue
Nature Metabolism
Published
2020-11-16
Volume
2
Issue
11
Pages
1284-1304
ISSN
2522-5812 (ISSN-L)
OpenAlex
W3104775068
Cited by
349
References
90
Citations by year
2026: 57 · 2025: 69 · 2024: 74 · 2023: 50 · 2022: 63 · 2021: 31 · 2020: 5
FWCI
19.53
Type
journal article
Language
en
Open access
Locations
  • Nature Metabolism (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (R01AG058812, R37AG016694, R01AG057493, R01AG013925, R01AG016694, R01AG026094, R37AG013925, P01AG051449)
  • National Cancer Institute (R01CA233790)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK098656)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R21AR074523)
Topics
  • Health Sciences › Medicine › Geriatrics and Gerontology › Sirtuins and Resveratrol in Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Biochemical and Molecular Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
CD38, aging, NAD+ homeostasis, nicotinamide mononucleotide, senescence-associated secretory phenotype, senescent cells, immune cells, white adipose tissue, liver, inflammation, metabolic dysfunction
MeSH terms
Aging, Animals, Humans, Inflammation, Liver, Membrane Glycoproteins, Mice, Inbred C57BL, Mice, Transgenic, NAD, Nicotinamide Mononucleotide, Phenotype, Bone Marrow Transplantation, Cellular Senescence, Mice, Knockout, Mice, ADP-ribosyl Cyclase 1, Adipose Tissue, White, Adipocytes, White, HEK293 Cells

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