Nuclear Lipid Droplets: Key Regulators of Aging and Nuclear Homeostasis

BUFFALO, NY- January 7, 2025 – A new #research perspective was #published in Aging (listed by MEDLINE/PubMed as "Aging (Albany NY)" and "Aging-US" by Web of Science) Volume 16, Issue 22 on December 9, 2024, entitled “Nuclear lipid droplets: a novel regulator of nuclear homeostasis and ageing.” In this article, Dr. Konstantinos Palikaras from the National and Kapodistrian University of Athens and Dr. Nektarios Tavernarakis from the University of Crete explore how tiny fat droplets, known as nuclear lipid droplets (nLDs), accumulate in the nucleus of cells as we age. Unlike regular lipid droplets, which store energy in the cytoplasm, these nuclear droplets may weaken the nucleus by disrupting critical cellular processes. The authors suggest that excessive buildup of nLDs could lead to nuclear instability and may be linked to metabolic conditions such as fatty liver disease, obesity-related disorders, and premature aging. This highlights the potential role of nLDs in cellular aging and age-related diseases. Previous research by the authors using Caenorhabditis elegans (C. elegans), a model organism commonly used to study aging, revealed the role of ATGL-1, an enzyme that regulates fat storage in the nucleus. When functioning properly, ATGL-1 helps maintain a healthy lipid balance. However, when it becomes inactive or overwhelmed, fat droplets build up around the nuclear lamina, making it more difficult for the cell to function properly. “These findings establish excessive nuclear lipid deposition as a key hallmark of aging, with profound implications for nuclear processes such as chromatin organization, DNA repair, and gene regulation.” The authors emphasize that lifestyle interventions, such as caloric restriction and better insulin regulation, can significantly reduce harmful nLD buildup, reinforcing the role of healthy metabolism in slowing cellular aging. They also call for further studies to understand how nLDs behave in human experimental models, particularly in patients with conditions like metabolic syndrome and progeria. A deeper understanding of these processes could lead to treatments designed to preserve cell health and delay age-related diseases. In summary, by presenting nuclear lipid droplets as potential therapeutic targets, this research perspective presents a new path for exploring treatments aimed at combating age-related diseases driven by lipid dysregulation. DOI - https://doi.org/10.18632/aging.206175 Corresponding authors - Konstantinos Palikaras - palikarask@med.uoa.gr, and Nektarios Tavernarakis - tavernarakis@imbb.forth.gr Video short - https://www.youtube.com/watch?v=vuSLuDk8Xjk Sign up for free Altmetric alerts about this article - https://aging.altmetric.com/details/email_updates?id=10.18632%2Faging.206175 Subscribe for free publication alerts from Aging - https://www.aging-us.com/subscribe-to-toc-alerts Keywords - aging, ATGL-1, HLH-30/TFEB, lipid droplet, non-linear optical phenomena, nucleus About Aging-US The mission of the journal is to understand the mechanisms surrounding aging and age-related diseases, including cancer as the main cause of death in the modern aged population. The journal aims to promote 1) treatment of age-related diseases by slowing down aging, 2) validation of anti-aging drugs by treating age-related diseases, and 3) prevention of cancer by inhibiting aging. (Cancer and COVID-19 are age-related diseases.) Please visit our website at https://www.Aging-US.com​​ and connect with us: Facebook - https://www.facebook.com/AgingUS/ X - https://twitter.com/AgingJrnl Instagram - https://www.instagram.com/agingjrnl/ YouTube - https://www.youtube.com/@AgingJournal LinkedIn - https://www.linkedin.com/company/aging/ Pinterest - https://www.pinterest.com/AgingUS/ Spotify - https://open.spotify.com/show/1X4HQQgegjReaf6Mozn6Mc MEDIA@IMPACTJOURNALS.COM