Ensheathing glia promote increased lifespan and healthy brain aging

Abstract: Glia have an emergent role in brain aging and disease. In the Drosophila melanogaster brain, ensheathing glia function as phagocytic cells and respond to acute neuronal damage, analogous to mammalian microglia. We previously reported changes in glia composition over the life of ants and fruit flies, including a decline in the relative proportion of ensheathing glia with time. How these changes influence brain health and life expectancy is unknown. Here, we show that ensheathing glia but not astrocytes decrease in number during Drosophila melanogaster brain aging. The remaining ensheathing glia display dysregulated expression of genes involved in lipid metabolism and apoptosis, which may lead to lipid droplet accumulation, cellular dysfunction, and death. Inhibition of apoptosis rescued the decline of ensheathing glia with age, improved the neuromotor performance of aged flies, and extended lifespan. Furthermore, an expanded ensheathing glia population prevented amyloid-beta accumulation in a fly model of Alzheimer's disease and delayed the premature death of the diseased animals. These findings suggest that ensheathing glia play a vital role in regulating brain health and animal longevity

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch
Anmerkungen
Aging cell. - 22, 5 (2023) , e13803, ISSN: 1474-9726

Ereignis
Veröffentlichung
(wo)
Freiburg
(wer)
Universität
(wann)
2023
Urheber
Sheng, Lihong
Shields, Emily J.
Gospocic, Janko
Sorida, Masato
Ju, Linyang
Byrns, China N.
Carranza, Faith
Berger, Shelley L
Bonini, Nancy M.
Bonasio, Roberto

DOI
10.1111/acel.13803
URN
urn:nbn:de:bsz:25-freidok-2347827
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
25.03.2025, 13:42 MEZ

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Beteiligte

  • Sheng, Lihong
  • Shields, Emily J.
  • Gospocic, Janko
  • Sorida, Masato
  • Ju, Linyang
  • Byrns, China N.
  • Carranza, Faith
  • Berger, Shelley L
  • Bonini, Nancy M.
  • Bonasio, Roberto
  • Universität

Entstanden

  • 2023

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