NAD+ supplementation prevents STING-induced senescence in CD8+ T cells by improving mitochondrial homeostasis

© 2024 Wiley Periodicals LLC..

Understanding the connection between senescence phenotypes and mitochondrial dysfunction is crucial in aging and premature aging diseases. Loss of mitochondrial function leads to a decline in T cell function, which plays a significant role in this process. However, more research is required to determine if improving mitochondrial homeostasis alleviates senescence phenotypes. Our research has shown an association between NAD+ and senescent T cells through the cGAS-STING pathway, which can lead to an inflammatory phenotype. Further research is needed to fully understand the role of NAD+ in T-cell aging and how it can be utilized to improve mitochondrial homeostasis and alleviate senescence phenotypes. We demonstrate here that mitochondrial dysfunction and cellular senescence with a senescence-associated secretory phenotype (SASP) occur in senescent T cells and tumor-bearing mice. Senescence is mediated by a stimulator of interferon genes (STING) and involves ectopic cytoplasmic DNA. We further show that boosting intracellular NAD+ levels with nicotinamide mononucleotide (NMN) prevents senescence and SASP by promoting mitophagy. NMN treatment also suppresses senescence and neuroinflammation and improves the survival cycle of mice. Encouraging mitophagy may be a useful strategy to prevent CD8+ T cells from senescence due to mitochondrial dysfunction. Additionally, supplementing with NMN to increase NAD+ levels could enhance survival rates in mice while also reducing senescence and inflammation, and enhancing mitophagy as a potential therapeutic intervention.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:125

Enthalten in:

Journal of cellular biochemistry - 125(2024), 3 vom: 15. März, Seite e30522

Sprache:

Englisch

Beteiligte Personen:

Ye, Bin [VerfasserIn]
Pei, Yingting [VerfasserIn]
Wang, Lujing [VerfasserIn]
Meng, Dehao [VerfasserIn]
Zhang, Yu [VerfasserIn]
Zou, Shuang [VerfasserIn]
Li, Henian [VerfasserIn]
Liu, Jinying [VerfasserIn]
Xie, Ziying [VerfasserIn]
Tian, Changhong [VerfasserIn]
Jiang, Yuqi [VerfasserIn]
Qiao, Yu [VerfasserIn]
Gao, Xu [VerfasserIn]
Zhang, Yanfen [VerfasserIn]
Ma, Ning [VerfasserIn]

Links:

Volltext

Themen:

0U46U6E8UK
CGAS-STING
Journal Article
Mitochondria
NAD
Nicotinamide mononucleotide
SASP
Senescence

Anmerkungen:

Date Completed 12.03.2024

Date Revised 12.03.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/jcb.30522

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM367147335