The influence of glucocorticoid signaling on tumor progression

• Published in: Brain, behavior, and immunity Vol. 30; pp. S26 - S31
• Main Authors: Volden, Paul A., Conzen, Suzanne D.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier Inc 15.03.2013
• Subjects: Allergy and Immunology; Animal models; Animals; Breast cancer; Cortisol; Disease Progression; Glucocorticoid receptor; Glucocorticoids; Glucocorticoids - metabolism; Humans; Hypothalamo-Hypophyseal System - metabolism; Hypothalamus - metabolism; Neoplasms - metabolism; Pituitary-Adrenal System - metabolism; Psychiatry; Receptors, Glucocorticoid - metabolism; Signal Transduction - physiology; Social environment; Stress response; Social environment; Animal models; Glucocorticoids; Glucocorticoid receptor; Breast cancer; Cortisol; Stress response
• ISSN: 0889-1591; 1090-2139; 1090-2139
• DOI: 10.1016/j.bbi.2012.10.022

► The influence of glucocorticoid signaling on tumor progression: A mini-review on the current literature. The diagnosis of cancer elicits a broad range of well-characterized stress-related biobehavioral responses. Recent studies also suggest that an individual’s neuroendocrine stress response can influence tumor biology. One of the major physiological pathways altered by the response to unrelenting social stressors is the hypothalamic–pituitary–adrenal or HPA axis. Initially following acute stress exposure, an increased glucocorticoid response is observed; eventually, chronic stress exposure can lead to a blunting of the normal diurnal cortisol pattern. Interestingly, recent evidence also links high primary tumor glucocorticoid receptor expression (and associated increased glucocorticoid-mediated gene expression) to more rapid estrogen-independent breast cancer progression. Furthermore, animal models of human breast cancer suggest that glucocorticoids inhibit tumor cell apoptosis. These findings provide a conceptual basis for understanding the molecular mechanisms underlying the influence of the individual’s stress response, and specifically glucocorticoid action, on breast cancer and other solid tumor biology. How this increased glucocorticoid signaling might contribute to cancer progression is the subject of this review.