Cited by 21Genetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and SenescenceStress Responses and Cortisol

Chronic Stress Increases Transcriptomic Indicators of Biological Aging in Mouse Bone Marrow Leukocytes

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Rentscher, Kelly E., Carroll, Judith E., Polsky, Lilian R., Lamkin, Donald M.·2022·Brain, Behavior, & Immunity - Health

Abstract

Research with animals and humans has demonstrated that chronic stress exposure can impact key biological aging pathways such as inflammation and DNA damage, suggesting a mechanism through which stress may increase risk for age-related disease. However, it is less clear whether these effects extend to other hallmarks of the aging process, such as cellular senescence. Male SCID mice were exposed to 14 days of restraint stress, with (n ​= ​6) or without (n ​= ​10) propranolol administration, or a non-stress control condition (n ​= ​10). Normal femoral bone marrow leukocytes were isolated from engrafted leukemia cells that had been injected prior to the stressor, as the mice were also under a cancer challenge. We performed whole genome transcriptional profiling to assess indicators of biological aging: cell stress, DNA damage repair, cellular senescence markers p16INK4a and p21, and the pro-inflammatory senescence-associated secretory phenotype (SASP). ANCOVAs that adjusted for tumor load and Fisher's pairwise comparisons revealed that stressed mice had enhanced p16INK4a (p ​= ​.02) and p21 (p ​= ​.004), lower DNA damage repair (p ​< ​.001), and higher SASP (p ​= ​.03) gene expression than control mice. Stressed mice also showed up-regulated beta-adrenergic (CREB) and inflammatory (NF-кB, AP-1) and down-regulated cell stress (Nrf2) transcription factor activity relative to control mice (ps ​< ​.01). Propranolol reversed CREB and Nrf2 activity (ps ​< ​.03). Findings suggest that chronic stress exposure can impact several key biological aging pathways within bone marrow leukocytes and these effects may be partially mediated by sympathetic beta-adrenergic receptor activation.

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Authors
Rentscher, K. E., Carroll, J. E., Polsky, L. R., & Lamkin, D. M.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Rentscher, Kelly E.
Venue
Brain, Behavior, & Immunity - Health
Publisher
Elsevier BV
Published
2022-07
Volume
22
Pages
100461
ISSN
2666-3546 (ISSN-L)
OpenAlex
W4225252437
Cited by
21
References
77
Citations by year
2026: 1 · 2025: 6 · 2024: 5 · 2023: 6 · 2022: 3
FWCI
1.68
Type
journal article
Language
en
Open access
Locations
  • Brain Behavior & Immunity - Health (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • National Institutes of Health
  • National Institute on Aging (K01AG065485)
  • National Cancer Institute (K07CA188237)
  • Norman Cousins Center for Psychoneuroimmunology
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
chronic stress, biological aging, bone marrow leukocytes, cellular senescence, propranolol, restraint stress, senescence-associated secretory phenotype, DNA repair, p16INK4a, p21, beta-adrenergic signaling, CREB, Nrf2, NF-kB, AP-1, inflammation, SCID mice, leukemia engraftment

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