NDLI: A tissue-engineered humanized xenograft model of human breast cancer metastasis to bone

Content Provider	PubMed Central
Author	Thibaudeau, Laure Taubenberger, Anna V. Holzapfel, Boris M. Quent, Verena M. Fuehrmann, Tobias Hesami, Parisa Brown, Toby D. Dalton, Paul D. Power, Carl A. Hollier, Brett G. Hutmacher, Dietmar W.
Copyright Year	2014
Abstract	The skeleton is a preferred homing site for breast cancer metastasis. To date, treatment options for patients with bone metastases are mostly palliative and the disease is still incurable. Indeed, key mechanisms involved in breast cancer osteotropism are still only partially understood due to the lack of suitable animal models to mimic metastasis of human tumor cells to a human bone microenvironment. In the presented study, we investigate the use of a human tissue-engineered bone construct to develop a humanized xenograft model of breast cancer-induced bone metastasis in a murine host. Primary human osteoblastic cell-seeded melt electrospun scaffolds in combination with recombinant human bone morphogenetic protein 7 were implanted subcutaneously in non-obese diabetic/severe combined immunodeficient mice. The tissue-engineered constructs led to the formation of a morphologically intact ‘organ’ bone incorporating a high amount of mineralized tissue, live osteocytes and bone marrow spaces. The newly formed bone was largely humanized, as indicated by the incorporation of human bone cells and human-derived matrix proteins. After intracardiac injection, the dissemination of luciferase-expressing human breast cancer cell lines to the humanized bone ossicles was detected by bioluminescent imaging. Histological analysis revealed the presence of metastases with clear osteolysis in the newly formed bone. Thus, human tissue-engineered bone constructs can be applied efficiently as a target tissue for human breast cancer cells injected into the blood circulation and replicate the osteolytic phenotype associated with breast cancer-induced bone lesions. In conclusion, we have developed an appropriate model for investigation of species-specific mechanisms of human breast cancer-related bone metastasis in vivo.
Related Links	http://dx.doi.org/10.1242/dmm.014076
Ending Page	309
Page Count	11
Starting Page	299
File Format	PDF
ISSN	17548403
e-ISSN	17548411
Journal	Disease Models & Mechanisms
Issue Number	2
Volume Number	7
Language	English
Publisher	The Company of Biologists Limited
Publisher Date	2014-02-01
Access Restriction	Open
Rights Holder	The Company of Biologists Limited
Subject Keyword	Immunology and Microbiology (miscellaneous) Biochemistry, Genetics and Molecular Biology(all) Medicine (miscellaneous) Neuroscience (miscellaneous) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neuroscience Immunology and Microbiology Medicine Biochemistry, Genetics and Molecular Biology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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