Cited by 487Skin Protection and AgingProtease and Inhibitor MechanismsTGF-β signaling in diseases

Collagen fragmentation promotes oxidative stress and elevates matrix metalloproteinase-1 in fibroblasts in aged human skin

Open access
Fisher, Gary J., Quan, Taihao, Purohit, Trupta, Shao, Yuan, Cho, Moon Kyun, He, Tianyuan, Varani, James, Kang, Sewon +1 more·2009·The American Journal of Pathology

Abstract

Aged human skin is fragile because of fragmentation and loss of type I collagen fibrils, which confer strength and resiliency. We report here that dermal fibroblasts express increased levels of collagen-degrading matrix metalloproteinases-1 (MMP-1) in aged (>80 years old) compared with young (21 to 30 years old) human skin in vivo. Transcription factor AP-1 and alpha2beta1 integrin, which are key regulators of MMP-1 expression, are also elevated in fibroblasts in aged human skin in vivo. MMP-1 treatment of young skin in organ culture causes fragmentation of collagen fibrils and reduces fibroblast stretch, consistent with reduced mechanical tension, as observed in aged human skin. Limited fragmentation of three-dimensional collagen lattices with exogenous MMP-1 also reduces fibroblast stretch and mechanical tension. Furthermore, fibroblasts cultured in fragmented collagen lattices express elevated levels of MMP-1, AP-1, and alpha2beta1 integrin. Importantly, culture in fragmented collagen raises intracellular oxidant levels and treatment with antioxidant MitoQ(10) significantly reduces MMP-1 expression. These data identify positive feedback regulation that couples age-dependent MMP-1-catalyzed collagen fragmentation and oxidative stress. We propose that this self perpetuating cycle promotes human skin aging. These data extend the current understanding of the oxidative theory of aging beyond a cellular-centric view to include extracellular matrix and the critical role that connective tissue microenvironment plays in the biology of aging.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.2353/ajpath.2009.080599

Cites

93 of 93 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • MitoQ has been tested successfully in human diseases such as Hepatitis C induced liver disease and skin photo damage and in experimental animal models including ischemia-reperfusion, neurodegenerative diseases, diabetes, and alcohol-induced hepatosteatosis.

    “For example, Mitoquinone (MitoQ) has been tested successfully in human diseases such as Hepatitis C induced liver disease and skin photo damage as well as a number of experimental animal models including ischemia-reperfusion, neurodegenerative diseases, diabetes, and alcohol-induced hepatosteatosis [8–14].”

    From Mitochondrially targeted compounds and their impact on cellular bioenergetics (2013) · cites this paper as [9]

    Split into 2 atoms — 0 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 1 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • Increased expression of MMP-1 can be both age- and ROS-dependent.

    “The increased expression of MMP-1 can be both age- and ROS-dependent”

    From Redox control of senescence and age-related disease. (2017) · cites this paper as [138]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 5

  1. Varani J, Dame MK, Rittie L, Fligiel SE, Kang S, Fisher GJ, Voorhees JJ: Decreased collagen production in chronologically aged skin: roles of age-dependent alteration in fibroblast function and defective mechanical stimulation. Am J Pathol 2006, 168:1861-1868
  2. Fisher et al AJP January 2009, Vol. 174, No. 1
  3. Fisher GJ, Kang S, Varani J, Bata-Csorgo Z, Wan Y, Datta S, Voorhees JJ: Mechanisms of photoaging and chronological skin aging. Arch Der- matol 2002, 138:1462-1470
  4. Fisher G, Datta S, Wang Z, Li X, Quan T, Chung J, Kang S, Voorhees J: c-Jun dependent inhibition of cutaneous procollagen transcription following ultraviolet irradiation is reversed by all-trans retinoid acid. J Clin Invest 2000, 106:663-670
  5. Wenk J, Brenneisen P, Wlaschek M, Poswig A, Briviba K, Oberley T, Scharffetter-Kochanek K: Stable overexpression of manganese su- peroxide dismutase in mitochondria identifies hydrogen peroxide as a major oxidant in the AP-1-mediated induction of matrix-degrading metalloproteinase-1. J Biol Chem 1999, 274:25869 -25876

Cited by

Sorted by citations

Authors
Fisher, G. J., Quan, T., Purohit, T., Shao, Y., Cho, M. K., He, T., Varani, J., Kang, S., & Voorhees, J. J.
Affiliations
University of Michigan (US)
Corresponding author
Fisher, Gary J.
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2009-01
Volume
174
Issue
1
Pages
101-114
ISSN
0002-9440 (ISSN-L)
OpenAlex
W1983125814
Cited by
487
References
93
Citations by year
2026: 45 · 2025: 38 · 2024: 29 · 2023: 41 · 2022: 32 · 2021: 44 · 2020: 27 · 2019: 32 · 2018: 15 · 2017: 17 · 2016: 21 · 2015: 31 · 2014: 19 · 2013: 27 · 2012: 22
FWCI
16.03
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (NIH5P60 DK20572, DK20572)
  • National Institute on Aging (R01AG019364, AG019364)
  • National Institute of Diabetes and Digestive and Kidney Diseases (5P60DK-20572, P60DK020572)
Topics
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Protease and Inhibitor Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
Keywords
skin aging, collagen fragmentation, MMP-1, oxidative stress, dermal fibroblasts, AP-1 transcription factor, alpha2beta1 integrin, collagen fibrils, extracellular matrix, mechanical tension, MitoQ, antioxidants
MeSH terms
Adult, Age Factors, Aged, 80 and over, Antioxidants, Fibroblasts, Fluorescent Antibody Technique, Humans, Organ Culture Techniques, RNA, Messenger, Blotting, Western, Skin Aging, Reactive Oxygen Species, Oxidative Stress, Transcription Factor AP-1, Reverse Transcriptase Polymerase Chain Reaction, Matrix Metalloproteinase 1, Collagen Type I, Integrin alpha2beta1, Microdissection

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