Cited by 283Telomeres, Telomerase, and SenescenceGenetics, Aging, and Longevity in Model OrganismsReproductive Biology and Fertility

The DOI matches its Crossref record; 52 of the 54 references it cites were found in a registry or an index.

Effect of Cytotoxic Chemotherapy on Markers of Molecular Age in Patients With Breast Cancer

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Abstract

BACKGROUND: Senescent cells, which express p16 (INK4a) , accumulate with aging and contribute to age-related pathology. To understand whether cytotoxic agents promote molecular aging, we measured expression of p16 (INK4a) and other senescence markers in breast cancer patients treated with adjuvant chemotherapy. METHODS: Blood and clinical information were prospectively obtained from 33 women with stage I to III breast cancer at four time points: before anthracycline-based chemotherapy, immediately after anthracycline-based chemotherapy, 3 months after anthracycline-based chemotherapy, and 12 months after anthracycline-based chemotherapy. Expression of senescence markers p16 (INK4a) and ARF mRNA was determined using TaqMan quantitative reverse-transcription polymerase chain reaction in CD3(+) T lymphocytes, telomere length was determined by Southern analysis, and senescence-associated cytokines were determined by enzyme-linked immunosorbent assay. Findings were independently assessed in a cross-sectional cohort of 176 breast cancer survivors enrolled a median of 3.4 years after treatment; 39% previously received chemotherapy. All statistical tests were two-sided. RESULTS: In prospectively analyzed patients, expression of p16 (INK4a) and ARF increased immediately after chemotherapy and remained elevated 12 months after treatment. Median increase in log2 p16 (INK4a) was 0.81 (interquartile range = 0.28-1.62; Wilcoxon signed-rank P < .001), or a 75% absolute increase in expression, equivalent to the increase observed over 14.7 years of chronological aging. ARF expression was comparably increased (P < .001). Increased expression of p16 (INK4a) and ARF was associated with dose-dense therapy and hematological toxicity. Expression of two senescence-associated cytokines (VEGFA and MCP1) was durably increased by adjuvant chemotherapy. Telomere length was not affected by chemotherapy. In a cross-sectional cohort, prior chemotherapy exposure was independently associated with a log2-increase in p16 (INK4a) expression of 0.57 (repeated measures model, P < .001), comparable with 10.4 years of chronological aging. CONCLUSIONS: Adjuvant chemotherapy for breast cancer is gerontogenic, inducing cellular senescence in vivo, thereby accelerating molecular aging of hematopoietic tissues.

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Metadata

Authors
Sanoff, H. K., Deal, A. M., Krishnamurthy, J., Torrice, C., Dillon, P., Sorrentino, J., Ibrahim, J. G., Jolly, T. A., Williams, G., Carey, L. A., Drobish, A., Gordon, B.-B., Alston, S., Hurria, A., Kleinhans, K., Rudolph, K. L., Sharpless, N. E., & Muss, H. B.
Affiliations
University of North Carolina at Chapel Hill (US)
Venue
JNCI: Journal of the National Cancer Institute
Published
2014-03-28
Volume
106
Issue
4
Pages
dju057-dju057
ISSN
  • 0027-8874 (ISSN-L)
  • 1460-2105
OpenAlex
W2126729859
Cited by
283
References
54
Citations by year
2026: 16 · 2025: 20 · 2024: 26 · 2023: 24 · 2022: 35 · 2021: 34 · 2020: 31 · 2019: 15 · 2018: 20 · 2017: 17 · 2016: 19 · 2015: 18 · 2014: 8
FWCI
13.74
Type
journal article
Language
en
Open access
Locations
  • JNCI Journal of the National Cancer Institute (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
Funders
  • Breast Cancer Research Foundation
  • Glenn Foundation for Medical Research
  • National Institutes of Health (2k12ca120780-16, 5r01ag024379-15, AG024379)
  • National Institute on Aging (AG024379)
  • National Cancer Institute (K12-CA120780, K07CA106722, P50CA058223, P30CA016086)
  • National Institute of Environmental Health Sciences (P30ES010126, T32ES007126)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Reproductive Medicine › Reproductive Biology and Fertility
Keywords
breast cancer, cytotoxic chemotherapy, molecular aging, cellular senescence, p16INK4a, ARF, anthracycline chemotherapy, adjuvant chemotherapy, dose-dense chemotherapy, hematologic toxicity, VEGF-A, MCP-1, telomere length, T cells, hematopoietic tissue
MeSH terms
Adult, Aged, Animals, Antineoplastic Combined Chemotherapy Protocols, Breast Neoplasms, Cross-Sectional Studies, Female, Humans, Middle Aged, Neoplasm Staging, Prospective Studies, T-Lymphocytes, Biomarkers, Cytokines, Telomere, Cellular Senescence, Anthracyclines, Cyclin-Dependent Kinase Inhibitor p16, Reverse Transcriptase Polymerase Chain Reaction, ADP-Ribosylation Factors, Mice

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