Primary human xenografts are human cancer tissues which are xenotransplanted into immunodeficient mice. Numerous studies have demonstrated that these xenografts much more closely resemble primary human cancers at the histological and molecular level then do xenografts generated from cell lines propagated in vitro (f-3). Primary xenograft models have proven most valuable in studying tumor biology and cellular heterogeneity, as well as for evaluating the efficacy of therapeutic agents. A prime example of the utility of primary human xenografts has been In the identification and characterization of human cancer stem cells (CSCs). UMCCC investigators used these models to report the Initial identification of CSCs in cancers of the breast, pancreas, head and neck and ovaries (4-6). Subsequently, xenograft models have been utilized by other UMCCC investigators to investigate CSCs in the brain, liver, adrenal and lung cancers {9-11). In addition to identifying CSC populations In various tumor types, these models have proven invaluable in studying the pathways which regulate them and in developing CSC-based therapeutics. Indeed, agents targeting CSCs regulatory pathways including Notch, Hedgehog, HER2/Akt, Wnt and cytokine signaling are being evaluated In multiple tumor types by UMCCC investigators. These preclinical studies have already led to the development of several early stage clinical trials targeting these CSC pathways. An important component of the translational oncology research strategy involves the development and testing of molecular targeted therapeutics In these xenograft models.

Public Health Relevance

The Primary Tumor Xenograft Core will establish individual patient tumors in mice to allow the study of individual patient tumors lo best design personalized therapeutics. A broad range of tumors will be analyzed.

National Institute of Health (NIH)
Center Core Grants (P30)
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Subcommittee B - Comprehensiveness (NCI)
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University of Michigan Ann Arbor
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Verhaegen, Monique E; Mangelberger, Doris; Harms, Paul W et al. (2015) Merkel cell polyomavirus small T antigen is oncogenic in transgenic mice. J Invest Dermatol 135:1415-24
Chinn, Steven B; Darr, Owen A; Owen, John H et al. (2015) Cancer stem cells: mediators of tumorigenesis and metastasis in head and neck squamous cell carcinoma. Head Neck 37:317-26
Vainshtein, Jeffrey M; Spector, Matthew E; Stenmark, Matthew H et al. (2014) Reliability of post-chemoradiotherapy F-18-FDG PET/CT for prediction of locoregional failure in human papillomavirus-associated oropharyngeal cancer. Oral Oncol 50:234-9
Castro, Maria G; Candolfi, Marianela; Wilson, Thomas J et al. (2014) Adenoviral vector-mediated gene therapy for gliomas: coming of age. Expert Opin Biol Ther 14:1241-57
Vainshtein, Jeffrey M; Spector, Matthew E; McHugh, Jonathan B et al. (2014) Refining risk stratification for locoregional failure after chemoradiotherapy in human papillomavirus-associated oropharyngeal cancer. Oral Oncol 50:513-9
Grogan, Patrick T; Sarkaria, Jann N; Timmermann, Barbara N et al. (2014) Oxidative cytotoxic agent withaferin A resensitizes temozolomide-resistant glioblastomas via MGMT depletion and induces apoptosis through Akt/mTOR pathway inhibitory modulation. Invest New Drugs 32:604-17
VanderVeen, Nathan; Paran, Christopher; Appelhans, Ashley et al. (2014) Marmosets as a preclinical model for testing "off-label" use of doxycycline to turn on Flt3L expression from high-capacity adenovirus vectors. Mol Ther Methods Clin Dev 1:
Krook, Melanie A; Nicholls, Lauren A; Scannell, Christopher A et al. (2014) Stress-induced CXCR4 promotes migration and invasion of ewing sarcoma. Mol Cancer Res 12:953-64
Ro, Seung-Hyun; Semple, Ian A; Park, Haewon et al. (2014) Sestrin2 promotes Unc-51-like kinase 1 mediated phosphorylation of p62/sequestosome-1. FEBS J 281:3816-27
Stenmark, Matthew H; McHugh, Jonathan B; Schipper, Matthew et al. (2014) Nonendemic HPV-positive nasopharyngeal carcinoma: association with poor prognosis. Int J Radiat Oncol Biol Phys 88:580-8

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