Cited by 83Neurogenesis and neuroplasticity mechanismsGenetics, Aging, and Longevity in Model OrganismsNeuroinflammation and Neurodegeneration Mechanisms

Blood-Borne Revitalization of the Aged Brain

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Castellano, Joseph M., Kirby, Elizabeth D., Wyss-Coray, Tony·2015·JAMA Neurology

Abstract

In the modern medical era, more diverse and effective treatment options have translated to increased life expectancy. With this increased life span comes increased age-associated disease and the dire need to understand underlying causes so that therapies can be designed to mitigate the burden to health and the economy. Aging exacts a seemingly inevitable multisystem deterioration of function that acts as a risk factor for a variety of age-related disorders, including those that devastate organs of limited regenerative potential, such as the brain. Rather than studying the brain and mechanisms that govern its aging in isolation from other organ systems, an emerging approach is to understand the relatively unappreciated communication that exists between the brain and systemic environment. Revisiting classical methods of experimental physiology in animal models has uncovered surprising regenerative activity in young blood with translational implications for the aging liver, muscle, brain, and other organs. Soluble factors present in young or aged blood are sufficient to improve or impair cognitive function, respectively, suggesting an aging continuum of brain-relevant systemic factors. The age-associated plasma chemokine CCL11 has been shown to impair young brain function while GDF11 has been reported to increase the generation of neurons in aged mice. However, the identities of specific factors mediating memory-enhancing effects of young blood and their mechanisms of action are enigmatic. Here we review brain rejuvenation studies in the broader context of systemic rejuvenation research. We discuss putative mechanisms for blood-borne brain rejuvenation and suggest promising avenues for future research and development of therapies.

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Crossref · 10.1001/jamaneurol.2015.1616

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  • Selective supplementation of blood-derived antiageing factors holds promise for revitalizing the aged brain.

    “The selective supplementation of blood-derived antiageing factors holds promise for revitalizing the aged brain.379”
  • Young blood prolongs the BA of aged recipients via epigenetic remodelling and rejuvenates various organs, including the brain.

    “young blood prolongs the BA of aged recipients via epigenetic remodelling447 and rejuvenates various organs, including the brain.379,448”
  • The role of blood-borne factors in aging-associated physiological and behavioral alterations in the brain has garnered further credence and offers therapeutic promise.

    “Although the definitive role of GDF11 in aging-induced vascular deficits was challenged by subsequent studies, the role of blood-borne factors in aging-associated physiological and behavioral alterations in the brain has garnered further credence and offers therapeutic promise (Castellano et al, 2015;Egerman et al, 2015).”

    From Microglia Priming with Aging and Stress (2017) · cites this paper as Castellano et al, 2015

  • The definitive role of GDF11 in aging-induced vascular deficits was challenged by subsequent studies.

    “Although the definitive role of GDF11 in aging-induced vascular deficits was challenged by subsequent studies, the role of blood-borne factors in aging-associated physiological and behavioral alterations in the brain has garnered further credence and offers therapeutic promise (Castellano et al, 2015;Egerman et al, 2015).”

    From Microglia Priming with Aging and Stress (2017) · cites this paper as Castellano et al, 2015

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Authors
Castellano, J. M., Kirby, E. D., & Wyss-Coray, T.
Affiliations
  • Stanford Medicine (US)
  • Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, California2Center for Tissue Regeneration, Repair, and Restoration, Veterans Affairs Palo Alto Healthcare System, Palo Alto, California
Venue
JAMA Neurology
Published
2015-10-01
Volume
72
Issue
10
Pages
1191
ISSN
2168-6149 (ISSN-L)
OpenAlex
W1788631067
Cited by
83
References
16
Citations by year
2026: 1 · 2025: 4 · 2024: 11 · 2023: 5 · 2022: 10 · 2021: 9 · 2020: 6 · 2019: 11 · 2018: 15 · 2017: 4 · 2016: 6 · 2015: 1
FWCI
3.51
Type
journal article
Language
en
Open access
Locations
  • JAMA Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institute on Aging (R01AG045034)
  • National Institute of Neurological Disorders and Stroke (F32NS083508, R00NS089938, K99NS089938, NS083508)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
brain rejuvenation, brain aging, young blood, blood-borne factors, eotaxin, GDF11, neurogenesis, cognitive function, age-related diseases, plasma chemokines, memory enhancement
MeSH terms
Aging, Animals, Brain, Cognition, Humans, Memory, Neurons, Rejuvenation

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