Online ISSN: 1945-4589

The Innate Immune Signaling Component FBXC-58 Mediates Dietary Restriction Effects on Healthy Aging in Caenorhabditis elegans

01-25-2023

“In this study, we found that DR prevents muscle aging via fbxc-58 in C. elegans.”

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BUFFALO, NY- January 25, 2023 – A new research paper was published in Aging (listed as "Aging (Albany NY)" by MEDLINE/PubMed and "Aging-US" by Web of Science) Volume 15, Issue 1, entitled, “The innate immune signaling component FBXC-58 mediates dietary restriction effects on healthy aging in Caenorhabditis elegans.”

Dietary restriction (DR) is a highly effective and reproducible intervention that prolongs longevity in many organisms. The molecular mechanism of action of DR is tightly connected with the immune system; however, the detailed mechanisms and effective downstream factors of immunity that mediate the beneficial effects of DR on aging remain unknown.

In this new study, researchers Jeong-Hoon Hahm, Farida S. Nirmala, Pyeong Geun Choi, Hyo-Deok Seo, Tae Youl Ha, Chang Hwa Jung, and Jiyun Ahn from the Korea Food Research Institute and the University of Science and Technology (in Daejeon, South Korea) investigated the immune signaling that mediates DR effects. The team used Caenorhabditis elegans (C. elegans) to understand the underlying molecular mechanisms of aging and immunity. 

“We found that the F-box gene, fbxc-58, a regulator of the innate immune response, is a novel mediator of DR effects on extending the health span of C. elegans.”

Fbxc-58 is upregulated by DR and is necessary for DR-induced lifespan extension and physical health improvement in C. elegans. Furthermore, through DR, fbxc-58 prevents disintegration of the mitochondrial network in body wall muscle during aging. The researchers found that fbxc-58 is a downstream target of the ZIP-2 and PHA-4 transcription factors, the well-known DR mediator, and fbxc-58 extends longevity in DR through an S6 kinase-dependent pathway. Thus, the team proposed that fbxc-58 may provide a new mechanistic understanding of the effects of DR on healthy aging and elucidate the signaling mechanisms that link immunity and DR effects with aging.

“Thus, we propose that investigating the molecular mechanism of action of F-box proteins, including fbxc-58, in DR will shed light on means to prevent sarcopenia and offer a potentially practical means of encouraging healthy aging via DR.”

DOI: https://doi.org/10.18632/aging.204477 

Corresponding Authors: Jeong-Hoon Hahm - hahmjh@kfri.re.kr, Jiyun Ahn - jyan@kfri.re.kr 

Keywords: dietary restriction, aging, innate immunity, F-box protein, Caenorhabditis elegans

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About Aging-US:

Aging publishes research papers in all fields of aging research including but not limited, aging from yeast to mammals, cellular senescence, age-related diseases such as cancer and Alzheimer’s diseases and their prevention and treatment, anti-aging strategies and drug development and especially the role of signal transduction pathways such as mTOR in aging and potential approaches to modulate these signaling pathways to extend lifespan. The journal aims to promote treatment of age-related diseases by slowing down aging, validation of anti-aging drugs by treating age-related diseases, prevention of cancer by inhibiting aging. Cancer and COVID-19 are age-related diseases.

Aging is indexed by PubMed/Medline (abbreviated as “Aging (Albany NY)”), PubMed Central, Web of Science: Science Citation Index Expanded (abbreviated as “Aging‐US” and listed in the Cell Biology and Geriatrics & Gerontology categories), Scopus (abbreviated as “Aging” and listed in the Cell Biology and Aging categories), Biological Abstracts, BIOSIS Previews, EMBASE, META (Chan Zuckerberg Initiative) (2018-2022), and Dimensions (Digital Science).

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