Cited by 51Cancer, Lipids, and MetabolismCancer, Stress, Anesthesia, and Immune ResponseAdipose Tissue and Metabolism

Chronic social isolation is associated with metabolic gene expression changes specific to mammary adipose tissue

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Volden, Paul A., Wonder, Erin L., Skor, Maxwell N., Carmean, Christopher M., Patel, Feenalie N., Ye, Honggang, Kocherginsky, Masha, McClintock, Martha K. +2 more·2013·Cancer Prevention Research

Published version of a preprint

Abstract

Chronic social isolation is linked to increased mammary tumor growth in rodent models of breast cancer. In the C3(1)/SV40 T-antigen FVB/N (TAg) mouse model of “triple-negative” breast cancer, the heightened stress response elicited by social isolation has been associated with increased expression of metabolic genes in the mammary gland before invasive tumors develop (i.e., during the in situ carcinoma stage). To further understand the mechanisms underlying how accelerated mammary tumor growth is associated with social isolation, we separated the mammary gland adipose tissue from adjacent ductal epithelial cells and analyzed individual cell types for changes in metabolic gene expression. Specifically, increased expression of the key metabolic genes Acaca, Hk2, and Acly was found in the adipocyte, rather than the epithelial fraction. Surprisingly, metabolic gene expression was not significantly increased in visceral adipose depots of socially isolated female mice. As expected, increased metabolic gene expression in the mammary adipocytes of socially isolated mice coincided with increased glucose metabolism, lipid synthesis, and leptin secretion from this adipose depot. Furthermore, application of media that had been cultured with isolated mouse mammary adipose tissue (conditioned media) resulted in increased proliferation of mammary cancer cells relative to group-housed–conditioned media. These results suggest that exposure to a chronic stressor (social isolation) results in specific metabolic reprogramming in mammary gland adipocytes that in turn contributes to increased proliferation of adjacent preinvasive malignant epithelial cells. Metabolites and/or tumor growth-promoting proteins secreted from adipose tissue could identify biomarkers and/or targets for preventive intervention in breast cancer. Cancer Prev Res; 6(7); 634–45. ©2013 AACR.

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Crossref · 10.1158/1940-6207.capr-12-0458

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  • Socially isolated animals show glucocorticoid-related increases in breast cancer burden, and molecular analyses find glucocorticoid signaling to promote cancer-related processes including mammary adipocyte metabolism, inhibition of tumor suppressor genes such as TP53, and resistance to chemotherapy-mediated programmed cell death.

    “For example, socially isolated animals show glucocorticoid-related increases in breast cancer burden [46], [47], and molecular analyses find glucocorticoid signaling to promote several cancer-related processes including mammary adipocyte metabolism [47], [48], inhibition of tumor suppressor genes such as TP53 [49], and resistance to chemotherapy-mediated programmed cell death [50], [51].”

    From Human Social Genomics (2014) · cites this paper as [48]

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Authors
Volden, P. A., Wonder, E. L., Skor, M. N., Carmean, C. M., Patel, F. N., Ye, H., Kocherginsky, M., McClintock, M. K., Brady, M. J., & Conzen, S. D.
Affiliations
University of Chicago (US)
Corresponding author
  • Brady, Matthew J.
  • Conzen, Suzanne D.
Venue
Cancer Prevention Research
Published
2013-07-01
Volume
6
Issue
7
Pages
634-645
ISSN
  • 1940-6207 (ISSN-L)
  • 1940-6215
OpenAlex
W2130036505
Cited by
48
References
56
Citations by year
2026: 2 · 2025: 1 · 2024: 1 · 2023: 4 · 2022: 2 · 2021: 3 · 2020: 6 · 2019: 2 · 2018: 3 · 2017: 8 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 1
FWCI
1.87
Type
journal article
Language
en
Open access
Locations
  • Cancer Prevention Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • University of Chicago
  • National Institutes of Health (5t32dk087703-05)
  • Diabetes Research and Training Center
  • National Cancer Institute (R01CA148814, P30CA014599)
  • National Institute of Diabetes and Digestive and Kidney Diseases (T32-DK-087703, P60DK020595, 1 T32 DK087703)
  • National Institute of Environmental Health Sciences (P50ES012382)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
  • Health Sciences › Medicine › Psychiatry and Mental health › Cancer, Stress, Anesthesia, and Immune Response
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
chronic social isolation, mammary adipose tissue, breast cancer, triple-negative breast cancer, metabolic gene expression, adipocytes, stress response, carcinoma in situ, mammary tumor growth, glucose metabolism, lipogenesis, leptin secretion, mammary epithelial cell proliferation, visceral adipose tissue, tumor microenvironment, biomarkers
MeSH terms
Adipose Tissue, Animals, Antigens, Polyomavirus Transforming, Caloric Tests, Enzyme-Linked Immunosorbent Assay, Epithelial Cells, Female, Food, Glucose, Mammary Neoplasms, Experimental, Mice, Transgenic, RNA, Messenger, Social Isolation, Biomarkers, Apoptosis, Adipocytes, Reverse Transcriptase Polymerase Chain Reaction, Leptin, Gene Expression Profiling, Cell Proliferation, Lipogenesis, Mice, Real-Time Polymerase Chain Reaction

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