Cited by 15Neurogenesis and neuroplasticity mechanismsTelomeres, Telomerase, and SenescenceNeuroinflammation and Neurodegeneration Mechanisms

Vascular Senescence: A Potential Bridge Between Physiological Aging and Neurogenic Decline

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Rojas-Vázquez, Sara, Blasco-Chamarro, Laura, López-Fabuel, Irene, Martínez-Máñez, Ramón, Fariñas, Isabel·2021·Frontiers in Neuroscience

Abstract

The adult mammalian brain contains distinct neurogenic niches harboring populations of neural stem cells (NSCs) with the capacity to sustain the generation of specific subtypes of neurons during the lifetime. However, their ability to produce new progeny declines with age. The microenvironment of these specialized niches provides multiple cellular and molecular signals that condition NSC behavior and potential. Among the different niche components, vasculature has gained increasing interest over the years due to its undeniable role in NSC regulation and its therapeutic potential for neurogenesis enhancement. NSCs are uniquely positioned to receive both locally secreted factors and adhesion-mediated signals derived from vascular elements. Furthermore, studies of parabiosis indicate that NSCs are also exposed to blood-borne factors, sensing and responding to the systemic circulation. Both structural and functional alterations occur in vasculature with age at the cellular level that can affect the proper extrinsic regulation of NSCs. Additionally, blood exchange experiments in heterochronic parabionts have revealed that age-associated changes in blood composition also contribute to adult neurogenesis impairment in the elderly. Although the mechanisms of vascular- or blood-derived signaling in aging are still not fully understood, a general feature of organismal aging is the accumulation of senescent cells, which act as sources of inflammatory and other detrimental signals that can negatively impact on neighboring cells. This review focuses on the interactions between vascular senescence, circulating pro-senescence factors and the decrease in NSC potential during aging. Understanding the mechanisms of NSC dynamics in the aging brain could lead to new therapeutic approaches, potentially include senolysis, to target age-dependent brain decline.

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Authors
Rojas-Vázquez, S., Blasco-Chamarro, L., López-Fabuel, I., Martínez-Máñez, R., & Fariñas, I.
Affiliations
Universitat de València (ES)
Corresponding author
Fariñas, Isabel
Venue
Frontiers in Neuroscience
Published
2021-04-20
Volume
15
Pages
666881-666881
ISSN
1662-453X (ISSN-L)
OpenAlex
W3152931419
Cited by
15
References
149
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 3 · 2022: 1 · 2021: 3
FWCI
0.37
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Neuroscience (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • RiuNet (Universitat Politècnica de València) (submittedVersion, cc-by-nc-nd)
Funders
  • Generalitat Valenciana (PROMETEO/2018/024, Prometeo 2017-030, 2018/024, RTI2018-100910-B-C41)
  • Ministerio de Ciencia e Innovación (RED2018-102723-T, RTI2018-100910-B-C41, RTI2018, RD16/0011/0017, CB06/05/0086)
  • Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas
  • Instituto de Salud Carlos III (RD16/0011, CIBERNED CB06/05/0086, RD16/0011/0017, CB06/05/0086, RTI2018-100910-B-C41, RED2018-102723-T)
  • Agencia Estatal de Investigación (SAF2017-86690-R, RED2018-102723-T, RTI2018-100910-B-C41)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
vascular aging, neural stem cells, adult neurogenesis, brain aging, neurogenic niche, parabiosis, blood-borne factors, senescence-associated secretory phenotype, senolysis, age-related decline

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