Aging | Krill oil protects dopaminergic neurons from age-related degeneration

“Thus, krill oil supplementation might serve as a possible approach for healthy brain aging interventions.”

BUFFALO, NY- November 23, 2022 – A new research paper was published in Aging (listed as "Aging (Albany NY)" by MEDLINE/PubMed and "Aging-US" by Web of Science) Volume 14, Issue 21, entitled, “Krill oil protects dopaminergic neurons from age-related degeneration through temporal transcriptome rewiring and suppression of several hallmarks of aging.”

There is accumulating evidence that interfering with the basic aging mechanisms can enhance healthy longevity. The interventional/therapeutic strategies targeting multiple aging hallmarks could be more effective than targeting one hallmark. While health-promoting qualities of marine oils have been extensively studied, the underlying molecular mechanisms are not fully understood.

Lipid extracts from Antarctic krill are rich in long-chain omega-3 fatty acids choline, and astaxanthin. In this new study, researchers Tanima SenGupta, Yohan Lefol, Lisa Lirussi, Veronica Suaste, Torben Luders, Swapnil Gupta, Yahyah Aman, Kulbhushan Sharma, Evandro Fei Fang, and Hilde Nilsen from the University of Oslo, Oslo University Hospital and Akershus University Hospital used C. elegans and human cells to investigate whether krill oil promotes healthy aging. 

“In a C. elegans model of Parkinson's disease, we show that krill oil protects dopaminergic neurons from aging-related degeneration, decreases alpha-synuclein aggregation, and improves dopamine-dependent behavior and cognition”

Krill oil rewires distinct gene expression programs that contribute to attenuating several aging hallmarks, including oxidative stress, proteotoxic stress, senescence, genomic instability, and mitochondrial dysfunction. Mechanistically, krill oil increases neuronal resilience through temporal transcriptome rewiring to promote anti-oxidative stress and anti-inflammation via healthspan regulating transcription factors such as SNK-1. Moreover, krill oil promotes dopaminergic neuron survival through regulation of synaptic transmission and neuronal functions via PBO-2 and RIM-1. 

“Collectively, krill oil rewires global gene expression programs and promotes healthy aging via abrogating multiple aging hallmarks, suggesting directions for further pre-clinical and clinical explorations.”

DOI: https://doi.org/10.18632/aging.204375 

Corresponding Author: Hilde Nilsen

Corresponding Email: hilde.nilsen@medisin.uio.no

Keywords: krill oil, aging, healthspan, mitochondrial health, senescence

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About Aging-US:

Launched in 2009, Aging (Aging-US) publishes papers of general interest and biological significance in all fields of aging research and age-related diseases, including cancer—and now, with a special focus on COVID-19 vulnerability as an age-dependent syndrome. Topics in Aging go beyond traditional gerontology, including, but not limited to, cellular and molecular biology, human age-related diseases, pathology in model organisms, signal transduction pathways (e.g., p53, sirtuins, and PI-3K/AKT/mTOR, among others), and approaches to modulating these signaling pathways.

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