The four members of the ErbB family of receptor tyrosine kinases are involved in development and tumorigenesis of the mammary gland. Whereas the epidermal growth factor receptor, ErbB2 and ErbB3 are positively associated with various cancers, clinical studies of ErbB4 in breast cancer are contradictory. Results from tissue culture analyses and some clinical studies suggested that ErbB4 is either a tumor suppressor or is a negative regulator of ErbB2-driven tumors. Neu-Cre-ErbB4(flox/null) mice in which ErbB4 was inactivated by Cre-lox-mediated recombination in the mammary gland developed MMTV-Neu-driven mammary tumors with a similar latency period to mice with one or two wild-type ErbB4 alleles. Moreover, there was no difference in the histologies of tumors that developed, nor in the propensity to form lung metastases. Taken together these results suggest that ErbB4 is not a potent, highly penetrant tumor suppressor, nor is it a factor in Neu-mediated tumorigenesis in this model.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/sj.onc.1209574 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Characterizing safety, toxicity, and breast cancer risk reduction using a long-term fulvestrant eluting implant.
Sci Rep
January 2025
Division of Hematology and Oncology, University of California, 1450 3rd Street, San Francisco, CA, 94143, USA.
For individuals at high risk of developing breast cancer, interventions to mitigate this risk include surgical removal of their breasts and ovaries or five years treatment with the anti-estrogen tamoxifen or aromatase inhibitors. We hypothesized that a silicone based anti-estrogen-eluting implant placed within the breast would provide the risk reduction benefit of hormonal therapy, but without the adverse effects that limit compliance. To this end, we demonstrate that when placed adjacent to mammary tissue in the 7,12-dimethylbenz[a]anthracene-induced rat breast cancer model a fulvestrant-eluting implant delays breast cancer with minimal systemic exposure.
View Article and Find Full Text PDFComparison of Lean, Obese, and Weight Loss Models Reveals TREM2 Deficiency Attenuates Breast Cancer Growth Uniquely in Lean Mice and Alters Clonal T Cell Populations.
Cancer Res
January 2025
Vanderbilt University, Nashville, TN, United States.
Obesity is an established risk factor for breast cancer development and poor prognosis. The adipose environment surrounding breast tumors, which is inflamed in obesity, has been implicated in tumor progression, and TREM2, a transmembrane receptor expressed on macrophages in adipose tissue and tumors, is an emerging therapeutic target for cancer. A better understanding of the mechanisms for the obesity-breast cancer association and the potential benefits of weight loss could help inform treatment strategies.
View Article and Find Full Text PDFSuppression of chemically induced mammary cancer by early-life oral administration of cholera toxin in mice is associated with aberrant regulation of Bmp and Notch signaling pathways.
Mol Biol Rep
January 2025
Laboratory of Biochemistry and Toxicology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Background: Lately, significant attention has been drawn towards the potential efficacy of cholera toxin (CT)-an exotoxin produced by the small intestine pathogenic bacterium Vibrio cholera-in modulating cancer-promoting events. In a recent study, we demonstrated that early-life oral administration of non-pathogenic doses of CT in mice suppressed chemically-induced carcinogenesis in tissues distantly located from the gut. In the mammary gland, CT pretreatment was shown to reduce tumor multiplicity, increase apoptosis and alter the expression of several cancer-related molecules.
View Article and Find Full Text PDFObesity increases DNA damage in the breast epithelium.
Breast Cancer Res
January 2025
Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA.
Obesity is a modifiable risk factor for breast cancer. Yet, how obesity contributes to cancer initiation is not fully understood. The goal of this study was to determine if the body mass index (BMI) and metabolic hallmarks of obesity are related to DNA damage in normal breast tissue.
View Article and Find Full Text PDFExercise training partly ameliorates cardiac dysfunction in mice during doxorubicin treatment of breast cancer.
J Transl Med
January 2025
Department of Biology, University of Turku, Turku, Finland.
Introduction: Doxorubicin is a chemotherapeutic drug used to treat various cancers. Exercise training (ET) can attenuate some cardiotoxic effects of doxorubicin (DOX) in tumor-free animals. However, the ET effects on cardiac function and glucose metabolism in DOX-treated breast cancer models remain unclear.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!