Cited by 24Telomeres, Telomerase, and SenescenceCancer, Hypoxia, and MetabolismMetabolism, Diabetes, and Cancer

Dynamic Metabolic Response to Adriamycin-Induced Senescence in Breast Cancer Cells

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You, Rong, Dai, Jin, Zhang, Ping, Barding, Gregory A., Raftery, Daniel·2018·Metabolites

Abstract

Cellular senescence displays a heterogeneous set of phenotypes linked to tumor suppression; however, after drug treatment, senescence may also be involved in stable or recurrent cancer. Metabolic changes during senescence can provide detailed information on cellular status and may also have implications for the development of effective treatment strategies. The metabolic response to Adriamycin (ADR) treatment, which causes senescence as well as cell death, was obtained with the aid of metabolic profiling and isotope tracing in two human breast cancer cell lines, MCF7 and MDA-MB-231. After 5 days of ADR treatment, more than 60% of remaining, intact cells entered into a senescent state, characterized by enlarged and flattened morphology and positive blue staining using SA-β-gal. Metabolic trajectory analysis showed that the two cell lines’ responses were significantly different and were divided into two distinct stages. The metabolic shift from the first stage to the second was reflected by a partial recovery of the TCA cycle, as well as amino acid and lipid metabolisms. Isotope tracing analysis indicated that the higher level of glutamine metabolism helped maintain senescence. The results suggest that the dynamic changes during senescence indicate a multi-step process involving important metabolic pathways which might allow breast cancer cells to adapt to persistent ADR treatment, while the higher level of anapleurosis may be important for maintaining the senescent state. Ultimately, a better understanding of metabolic changes during senescence might provide targets for cancer therapy and tumor eradication.

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Authors
You, R., Dai, J., Zhang, P., Barding, G. A., & Raftery, D.
Affiliations
  • South China Normal University (CN)
  • University of Washington (US)
  • Southwest University (CN)
Corresponding author
Raftery, Daniel
Venue
Metabolites
Publisher
MDPI AG
Published
2018-12-15
Volume
8
Issue
4
Pages
95
ISSN
2218-1989 (ISSN-L)
OpenAlex
W2905553940
Cited by
24
References
37
Citations by year
2025: 2 · 2024: 4 · 2023: 3 · 2022: 4 · 2021: 4 · 2020: 4 · 2019: 3
FWCI
1.89
Type
journal article
Language
en
Open access
Locations
  • Metabolites (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institutes of Health (R01GM085291, P30CA015704)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
cellular senescence, doxorubicin, breast cancer, metabolic response, TCA cycle, glutamine metabolism, amino acid metabolism, lipid metabolism, isotope tracing, MCF-7 cells, MDA-MB-231 cells, drug resistance

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