Cited by 920Autophagy in Disease and TherapyGenetics, Aging, and Longevity in Model OrganismsAntioxidant Activity and Oxidative Stress

Lipofuscin: mechanisms of age-related accumulation and influence on cell function12 1Guest Editor: Rajindar S. Sohal 2This article is part of a series of reviews on “Oxidative Stress and Aging.” The full list of papers may be found on the homepage of the journal.

Brunk, Ulf T, Terman, Alexei·2002·Free Radical Biology and Medicine

Abstract

The accumulation of lipofuscin within postmitotic cells is a recognized hallmark of aging occurring with a rate inversely related to longevity. Lipofuscin is an intralysosomal, polymeric substance, primarily composed of cross-linked protein residues, formed due to iron-catalyzed oxidative processes. Because it is undegradable and cannot be removed via exocytosis, lipofuscin accumulation in postmitotic cells is inevitable, whereas proliferative cells efficiently dilute it during division. The rate of lipofuscin formation can be experimentally manipulated. In cell culture models, oxidative stress (e.g., exposure to 40% ambient oxygen or low molecular weight iron) promotes lipofuscin accumulation, whereas growth at 8% oxygen and treatment with antioxidants or iron-chelators diminish it. Lipofuscin is a fluorochrome and may sensitize lysosomes to visible light, a process potentially important for the pathogenesis of age-related macular degeneration. Lipofuscin-associated iron sensitizes lysosomes to oxidative stress, jeopardizing lysosomal stability and causing apoptosis due to release of lysosomal contents. Lipofuscin accumulation may also diminish autophagocytotic capacity by acting as a sink for newly produced lysosomal enzymes and, therefore, interfere with recycling of cellular components. Lipofuscin, thus, may be much more directly related to cellular degeneration at old age than was hitherto believed.

Integrity signals

Registry

Crossref · 10.1016/s0891-5849(02)00959-0

Cites

73 of 73 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Cross-linked products that reach the lysosome through sporadic fusion with double membrane vesicles exert a potent inhibitory effect on lysosomal proteolysis by inducing posttranslational modifications in the enzymatic machinery and changing the intralysosomal milieu.

    “cross-linked products that reach the lysosome through their sporadic fusion with the double membrane vesicles, exert a potent inhibitory effect on lysosomal proteolysis by directly inducing undesired posttranslational modifications in the enzymatic machinery and also by changing the properties of the intralysosomal milieu, normally optimal for functioning of these enzymes (Brunk and Terman, 2002;”

    From Protein Homeostasis and Aging: the importance of exquisite quality control (2011) · cites this paper as Brunk and Terman, 2002

  • LF accumulation in aged post-mitotic tissues occurs most probably in the context of post-mitotic cellular senescence (PoMiCS), which is suspected to play a significant role in driving tissue aging, but LF can be present in non-senescent post-mitotic tissues and thus is not strictly senescence-specific.

    “Of note, LF accumulation in aged post-mitotic tissues occurs most probably in the context of post-mitotic cellular senescence (PoMiCS), which is suspected to play a significant role in driving tissue aging29,30, but can be present in non-senescent post-mitotic tissues and thus is not strictly senescence-specific31.”

Cites

Flagged first, then by citations

3 of the 76 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Brunk, U. T., & Terman, A.
Affiliations
Linköping University (SE)
Corresponding author
Brunk, Ulf T
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2002-09
Volume
33
Issue
5
Pages
611-619
ISSN
0891-5849 (ISSN-L)
OpenAlex
W1538904872
Cited by
919
References
76
Citations by year
2026: 36 · 2025: 49 · 2024: 36 · 2023: 49 · 2022: 31 · 2021: 36 · 2020: 44 · 2019: 42 · 2018: 42 · 2017: 48 · 2016: 41 · 2015: 46 · 2014: 35 · 2013: 34 · 2012: 46
FWCI
20.25
Type
journal article
Language
en
Open access
closed
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
Vetenskapsrådet
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
Keywords
lipofuscin, aging, oxidative stress, iron-catalyzed oxidation, lysosomes, postmitotic cells, age-related macular degeneration, lysosomal stability, apoptosis, autophagy, antioxidants, iron chelators, cell degeneration, longevity
MeSH terms
Age Factors, Aging, Animals, Free Radicals, Humans, Iron, Lipofuscin, Lysosomes, Microscopy, Fluorescence, Models, Biological, Oxygen, Phagocytosis, Oxidative Stress

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review