Cited by 60Cancer Risks and FactorsMetabolism, Diabetes, and CancerExercise and Physiological Responses

Exercise effects on tumorigenesis in a p53-deficient mouse model of breast cancer

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COLBERT, LISA H., WESTERLIND, KIM C., PERKINS, SUSAN N., HAINES, DIANA C., BERRIGAN, DAVID, DONEHOWER, LAWRENCE A., FUCHS-YOUNG, ROBIN, HURSTING, STEPHEN D.·2009·Medicine & Science in Sports & Exercise

Abstract

PURPOSE: Physically active women have a reduced risk of breast cancer, but the dose of activity necessary and the role of energy balance and other potential mechanisms have not been fully explored in animal models. We examined treadmill and wheel running effects on mammary tumorigenesis and biomarkers in p53-deficient (p53(+/-)):MMTV-Wnt-1 transgenic mice. METHODS: Female mice (9 wk old) were randomly assigned to the following groups in experiment 1: treadmill exercise 5 d x wk(-1), 45 min x d(-1), 5% grade at 20 m x min(-1), approximately 0.90 km x d(-1) (TREX1, n = 20) or at 24 m x min(-1), approximately 1.08 km x d(-1) (TREX2, n = 21); or a nonexercise control (CON-TREX, n = 22). In experiment 2, mice were randomly assigned to voluntary wheel running (WHL, n = 21, 2.46 +/- 1.11 km x d(-1) (mean +/- SD)) or to a nonexercise control (CON-WHL, n = 22). Body composition was measured at approximately 9 wk and serum insulin-like growth factor 1 (IGF-1) at two to three monthly time points beginning at approximately 9 wk on study. Mice were sacrificed when tumors reached 1.5 cm, mice became moribund, or there was only one mouse per treatment group remaining. RESULTS: TREX1 (24 wk) and TREX2 (21 wk) had shorter median survival times than CON-TREX (34 wk; P < 0.01), whereas those of WHL and CON-WHL were similar (23 vs 24 wk; P = 0.32). TREX2 had increased multiplicity of mammary gland carcinomas compared with CON-TREX; WHL had a higher tumor incidence than CON-WHL. All exercising animals were lighter than their respective controls, and WHL had lower body fat than CON-WHL (P < 0.01). There was no difference in IGF-1 between groups (P > 0.05). CONCLUSIONS: Despite beneficial or no effects on body weight, body fat, or IGF-1, exercise had detrimental effects on tumorigenesis in this p53-deficient mouse model of spontaneous mammary cancer.

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  1. [25]Mehl K Davis J Clements J Berger F Pena M Carson J Decreased intestinal polyp multiplicity is related to exercise mode and gender in APCMin/+ mice J Appl Physiol 2005 98 2219 25 15894538

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Authors
COLBERT, L. H., WESTERLIND, K. C., PERKINS, S. N., HAINES, D. C., BERRIGAN, D., DONEHOWER, L. A., FUCHS-YOUNG, R., & HURSTING, S. D.
Affiliations
  • University of Wisconsin–Madison (US)
  • University of Colorado Denver (US)
  • The University of Texas at Austin (US)
  • National Cancer Institute (US)
  • National Institutes of Health (US)
  • Baylor College of Medicine (US)
  • The University of Texas MD Anderson Cancer Center (US)
Venue
Medicine & Science in Sports & Exercise
Published
2009-08
Volume
41
Issue
8
Pages
1597-1605
ISSN
0195-9131 (ISSN-L)
OpenAlex
W1989853294
Cited by
60
References
40
Citations by year
2026: 2 · 2025: 3 · 2024: 5 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 14 · 2019: 1 · 2018: 2 · 2017: 5 · 2016: 2 · 2015: 5 · 2014: 1 · 2013: 4 · 2012: 1
FWCI
1.50
Type
journal article
Language
en
Open access
Locations
  • Medicine & Science in Sports & Exercise (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (n01co12400-79-0-22)
  • National Cancer Institute (N01CO12400, N01-CO-012400)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Risks and Factors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
Keywords
physical activity, breast cancer, mammary carcinogenesis, p53 deficiency, treadmill running, wheel running, survival, tumor multiplicity, fat mass, insulin-like growth factor I, energy balance, body composition, tumor markers, tumor cell proliferation, cancer cell death
MeSH terms
Tumor Suppressor p53-Binding Protein 1, Animals, Body Composition, Breast Neoplasms, Chromosomal Proteins, Non-Histone, DNA-Binding Proteins, Female, Insulin-Like Growth Factor I, Mammary Neoplasms, Experimental, Molecular Sequence Data, Physical Conditioning, Animal, Random Allocation, Carcinogenicity Tests, Survival Analysis, Models, Animal, Intracellular Signaling Peptides and Proteins, Mice

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