Research is conducted to characterize and develop new animal models of human disease and to develop the means to better characterize a model's relevance, addressing critical barriers to research progress. Additional aims include the development of new research technologies for the evaluation and application of disease biomarkers. Progress was made in developing cancer diagnostics and in research resources useful in developing and characterizing new models of human cancer and for the proper development and utilization of tissue biobanks. This research project included developing capabilities in molecular diagnostics for cancer models, developing methods for automated morphometric image analysis of cancer specimens for quantitative pathology, investigating the role of S100 in cancer, and preclinical development of targeted therapy for mucosal melanoma. Continued advances and applications in developing quality assurance methods for tissue biobanking were also continued. Unique spatial-spectral image analysis algorithms were developed for applying automated pattern recognition morphometric image analysis to quantify histologic tumor and non-tumor tissue areas in biospecimen tissue sections. Additional progress was made in developing and validating algorithms for cancers of lung and cancer metastasis. Contributions to new models important for understanding mechanisms of drug resistance were developed and validated using quantitative optical imaging. Research resulted in contributions to development of biobank quality assurance procedures. Harmonization of pathology quality assurance procedures for biobank accessions has lagged behind other avenues of biospecimen research and biobank development. Comprehension of the cellular content of biorepository specimens is important for discovery of tissue-specific clinically relevant biomarkers for diagnosis and treatment. While rapidly emerging technologies in molecular analyses and data mining create focus on appropriate measures for minimizing pre-analytic artifact-inducing variables, less attention gets paid to annotating the constituent make up of biospecimens for more effective specimen selection by biobank clients. Both pre-analytic tissue processing and a specimen's composition influence acquisition of relevant macromolecules for downstream assays. Pathologist review of biorepository submissions, particularly tissues as part of quality assurance procedures, helps to ensure that the intended target cells are present and in sufficient quantity in accessioned specimens. This manual procedure can be tedious and subjective. Incorporating digital pathology into biobank quality assurance procedures, using automated pattern recognition morphometric image analysis to quantify tissue feature areas in digital whole slide images of tissue sections, can minimize variability and subjectivity associated with routine pathologic evaluations in biorepositories. Whole-slide images and pathologist-reviewed morphometric analyses can be provided to researchers to guide specimen selection. Harmonization of pathology quality assurance methods that minimize subjectivity and improve reproducibility among collections would facilitate research-relevant specimen selection by investigators and could facilitate information sharing in an integrated network approach to biobanking. Melanoma represents a significant malignancy in humans and dogs. Different from genetically engineered models, sporadic canine melanocytic neoplasms share several characteristics with human disease that could make dogs a more relevant pre-clinical model. Canine melanomas rarely arise in sun-exposed sites. Most occur in the oral cavity, with a subset having intraepithelial malignant melanocytes mimicking the in situ component of human mucosal melanoma. The spectrum of canine melanocytic neoplasia includes benign lesions with some analogy to nevi, as well as invasive primary melanoma, and widespread metastasis. Growing evidence ofdistinct subtypes in humans, differing in somatic and predisposing germ-line genetic alterations, cell of origin, epidemiology, relationship to ultraviolet radiation and progression from benign to malignant tumors, may also exist in dogs. Canine and human mucosal melanomas appear to harbor BRAF, NRAS and c-kit mutations uncommonly, compared to human cutaneous melanomas, although both species share AKT and MAPK signaling activation. We conclude that there is significant overlap in the clinical and histopathological features of canine and human mucosal melanomas. This represents opportunity to explore canine oral cavity melanoma as a pre-clinical model.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Scientific Cores Intramural Research (ZIC)
Project #
1ZICBC010953-08
Application #
9154300
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
8
Fiscal Year
2015
Total Cost
Indirect Cost
Name
Basic Sciences
Department
Type
DUNS #
City
State
Country
Zip Code
Kumar, Jeyan S; Wei, Bih-Rong; Madigan, James P et al. (2016) Bioluminescent imaging of ABCG2 efflux activity at the blood-placenta barrier. Sci Rep 6:20418
Cataisson, Christophe; Michalowski, Aleksandra M; Shibuya, Kelly et al. (2016) MET signaling in keratinocytes activates EGFR and initiates squamous carcinogenesis. Sci Signal 9:ra62
Venugopalan, Abhilash; Lee, Min-Jung; Niu, Gang et al. (2016) EGFR-targeted therapy results in dramatic early lung tumor regression accompanied by imaging response and immune infiltration in EGFR mutant transgenic mouse models. Oncotarget 7:54137-54156
Roessler, Stephanie; Lin, Guoling; Forgues, Marshonna et al. (2015) Integrative genomic and transcriptomic characterization of matched primary and metastatic liver and colorectal carcinoma. Int J Biol Sci 11:88-98
Chang, Ki-Eun; Wei, Bih-Rong; Madigan, James P et al. (2015) The protein phosphatase 2A inhibitor LB100 sensitizes ovarian carcinoma cells to cisplatin-mediated cytotoxicity. Mol Cancer Ther 14:90-100
Yu, Bing; Swatkoski, Stephen; Holly, Alesia et al. (2015) Oncogenesis driven by the Ras/Raf pathway requires the SUMO E2 ligase Ubc9. Proc Natl Acad Sci U S A 112:E1724-33
Prieto, Darue A; Johann Jr, Donald J; Wei, Bih-Rong et al. (2014) Mass spectrometry in cancer biomarker research: a case for immunodepletion of abundant blood-derived proteins from clinical tissue specimens. Biomark Med 8:269-86
Simmons, John K; Patel, Jyoti; Michalowski, Aleksandra et al. (2014) TORC1 and class I HDAC inhibitors synergize to suppress mature B cell neoplasms. Mol Oncol 8:261-72
Simpson, R Mark; Bastian, Boris C; Michael, Helen T et al. (2014) Sporadic naturally occurring melanoma in dogs as a preclinical model for human melanoma. Pigment Cell Melanoma Res 27:37-47
Geiger, Thomas R; Ha, Ngoc-Han; Faraji, Farhoud et al. (2014) Functional analysis of prognostic gene expression network genes in metastatic breast cancer models. PLoS One 9:e111813

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