Cited by 101Reproductive Biology and FertilityTelomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model Organisms

Cellular hallmarks of aging emerge in the ovary prior to primordial follicle depletion

Open access
Ansere, Victor A., Ali-Mondal, Samim, Sathiaseelan, Roshini, Garcia, Driele N., Isola, José V.V., Henseb, Jéssica D., Saccon, Tatiana D., Ocañas, Sarah R. +4 more·2021·Mechanisms of Ageing and Development

Abstract

Decline in ovarian reserve with advancing age is associated with reduced fertility and the emergence of metabolic disturbances, osteoporosis, and neurodegeneration. Recent studies have provided insight into connections between ovarian insufficiency and systemic aging, although the basic mechanisms that promote ovarian reserve depletion remain unknown. Here, we sought to determine if chronological age is linked to changes in ovarian cellular senescence, transcriptomic, and epigenetic mechanisms in a mouse model. Histological assessments and transcriptional analyses revealed the accumulation of lipofuscin aggresomes and senescence-related transcripts (Cdkn1a, Cdkn2a, Pai-1 and Hmgb1) significantly increased with advancing age. Transcriptomic profiling and pathway analyses following RNA sequencing, revealed an upregulation of genes related to pro-inflammatory stress and cell-cycle inhibition, whereas genes involved in cell-cycle progression were downregulated; which could be indicative of senescent cell accumulation. The emergence of these senescence-related markers preceded the dramatic decline in primordial follicle reserve observed. Whole Genome Oxidative Bisulfite Sequencing (WGoxBS) found no genome-wide or genomic context-specific DNA methylation and hydroxymethylation changes with advancing age. These findings suggest that cellular senescence may contribute to ovarian aging, and thus, declines in ovarian follicular reserve. Cell-type-specific analyses across the reproductive lifespan are needed to fully elucidate the mechanisms that promote ovarian insufficiency.

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Crossref · 10.1016/j.mad.2020.111425

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  • Secretion of SASP factors such as Ccl8, CCL5 and Crlf1 increases with age in mouse ovaries.

    “The secretion of SASP factors such as Ccl8 (ref. 239), CCL5 (ref. 241) and the pro-inflammatory related gene Crlf1 (ref. 239) also increases with age.”

    From SenNet recommendations for detecting senescent cells in different tissues (2024) · cites this paper as [239]

    The Results (Transcriptomic analysis; page unavailable) report that Ccl8 and Crlf1 expression increased with age in mouse ovaries, with RT-qPCR confirming the RNA-seq findings. The paper measured gene expression, not secretion of those factors. CCL5 is attached to a different citation in the citing sentence and is not assessed here. (LLM, conf=0.86)

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  • In ovaries from mice of advanced reproductive age, cells classified as senescent have increased Cdkn2a, Cdkn1a, Serpine1 and Hmgb1.

    “In ovaries from mice of advanced reproductive age, cells classified as senescent are characterized by increased expression of Cdkn2a (refs. 238–240), Cdkn1a, Serpine1 and Hmgb1 (ref. 239).”

    From SenNet recommendations for detecting senescent cells in different tissues (2024) · cites this paper as [239]

    The Results (“Senescence markers”; page not provided) report increased ovarian Cdkn1a, Cdkn2a, PAI-1/Serpine1 and HMGB1 expression in older mice. The Methods describe qPCR of ovarian samples, not expression measured specifically in cells classified as senescent. That cell-specific part of the claim is unsupported. (LLM, conf=0.88)

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  • These aged mouse ovary cells exhibit increased lysosomal content, indicated by lipofuscin aggregates and SA-β-gal staining in the stromal compartment.

    “Additionally, these cells exhibit increased lysosomal content, as indicated by accumulation of lipofuscin aggregates (known as ‘aggresomes’)239 and by SA-β-gal staining in the stromal compartment241.”

    From SenNet recommendations for detecting senescent cells in different tissues (2024) · cites this paper as [239]

    Citation 241 is attached to the SA-β-gal staining in the stromal compartment, not to the lipofuscin finding cited as 239. The Discussion mentions β-galactosidase staining only as a comparator for lipofuscin staining; the passages found do not report SA-β-gal staining in ovarian stroma (searched for SA-β-gal, stromal compartment, and ovarian stroma). (LLM, conf=0.76)

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1 of the 93 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Snyder AN, Crane JS, 2020. Histology, Lipofuscin, StatPearls, Treasure Island (FL). 30726043
  2. te Velde ER, Scheffer GJ, Dorland M, Broekmans FJ, Fauser BCJM, 1998b. Developmental and endocrine aspects of normal ovarian aging. Molecular and Cellular Endocrinology 145, 67– 73. 9922101
  3. Urzua U, Chacon C, Espinoza R, Martínez S, Hernandez N, 2018b. Parity-Dependent Hemosiderin and Lipofuscin Accumulation in the Reproductively Aged Mouse Ovary. Analytical Cellular Pathology 2018. PMC5874974 29736365

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Authors
Ansere, V. A., Ali-Mondal, S., Sathiaseelan, R., Garcia, D. N., Isola, J. V. V., Henseb, J. D., Saccon, T. D., Ocañas, S. R., Tooley, K. B., Stout, M. B., Schneider, A., & Freeman, W. M.
Affiliations
  • University of Oklahoma Health Sciences Center (US)
  • Universidade Federal de Pelotas (BR)
  • Oklahoma Medical Research Foundation (US)
Corresponding author
Freeman, Willard M.
Venue
Mechanisms of Ageing and Development
Publisher
Elsevier BV
Published
2021-03
Volume
194
Pages
111425
ISSN
0047-6374 (ISSN-L)
OpenAlex
W3117460981
Cited by
101
References
93
Citations by year
2026: 31 · 2025: 22 · 2024: 23 · 2023: 10 · 2022: 12 · 2021: 3
FWCI
4.68
Type
journal article
Language
en
Open access
Locations
  • Mechanisms of Ageing and Development (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Foundation for Aging Research
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico
  • National Institute on Aging
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Biology and Fertility
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
ovarian aging, cellular senescence, ovarian reserve, primordial follicle depletion, DNA methylation, hydroxymethylation, epigenetics, transcriptomics, oxidative bisulfite sequencing, p21, CDKN2A, plasminogen activator inhibitor-1, HMGB1, inflammation, cell cycle inhibition, mouse model
MeSH terms
Age Factors, Aging, Animals, Female, Ovarian Follicle, Mice, Inbred C57BL, Ovary, Cytokines, Primary Ovarian Insufficiency, Cellular Senescence, Cell Cycle Proteins, Inflammation Mediators, DNA Methylation, Gene Expression Profiling, Epigenesis, Genetic, Mice, Transcriptome, Ovarian Reserve

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