We propose to build and utilize a unique repository of biospecimens that are focused on early pancreatic lesions by assembling a unique and robust collection of early lesions and blood samples from patients at risk and those with lesions representing early stages of pancreatic cancer, matched sets of tumors and metastasis and control tissues from the same patients, and in many cases longitudinally obtained blood samples from the same patients. We will include longitudinally obtained samples from patients at risk for developing pancreatic cancer that go on to develop pancreatic cancer, including patients with cystic lesions, chronic pancreatitis, and adult onset diabetes. This unique resource will be used to identify and characterize biomarkers that develop during the progression from premalignant lesions to primary tumors, and to evaluate blood samples from these patients for the presence of biomarkers at both early and late stages of disease progression. Both the biospecimens and candidate biomarkers will be available for collaborative studies within the Pancreatic Cancer Detection Consortium. Specific 1. We will establish a comprehensive collection of tissues (fixed, frozen and living as organoids) representing the spectrum of premalignant to malignant and metastatic lesions that occur within individual patients obtained at autopsy and at surgery, and develop a collection of longitudinally obtained blood and tissue specimens from patients at risk for pancreatic cancer and that develop pancreatic cancer.
Specific Aim 2. We will evaluate 15 novel glycoprotein biomarkers of pancreatic cancer progression in human tissue samples containing cell types that represent the progression of pancreatic cancer from early premalignant lesions to primary and metastatic cancer.
Specific Aim 3. We will evaluate the expression of 15 novel glycoprotein biomarkers of pancreatic cancer progression in longitudinal samples serum and plasma of patients that develop pancreatic cancer, and compare these to longitudinal samples of appropriate patients with benign diseases.
Specific Aim 4. Discover cell surface antigens specific to the malignant state by applying phage- display approaches to human pancreatic organoids.
Specific Aim 5. To evaluate and discover exosome-based biomarkers of pancreatic cancer by using an unbiased proteomic analysis of exosomal cargo derived from patients with early stage pancreatic lesions (PanIN3 eand early stage tumors) to develop a panel of markers that can accurately predict the progression of these lesions towards pancreatic cancer.

Public Health Relevance

There are two overall goals of this project. The first is to assemble a unique and robust collection of early lesions and blood samples from patients at risk and those with lesions representing early stages of pancreatic cancer, matched sets of tumors and metastasis and control tissues from the same patients, a tissue resource for use in the discovery and validation of biomarkers for early disease. The second goal is to undertake a series of biomarker discovery and prevalidation projects, proposed within this application and by collaborative studies from other investigators that are part of the Pancreatic Cancer Detection Consortium.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Research Project--Cooperative Agreements (U01)
Project #
5U01CA210240-03
Application #
9693608
Study Section
Special Emphasis Panel (ZCA1)
Program Officer
Rinaudo, Jo Ann S
Project Start
2017-05-01
Project End
2022-04-30
Budget Start
2019-05-01
Budget End
2020-04-30
Support Year
3
Fiscal Year
2019
Total Cost
Indirect Cost
Name
University of Nebraska Medical Center
Department
Internal Medicine/Medicine
Type
Schools of Medicine
DUNS #
168559177
City
Omaha
State
NE
Country
United States
Zip Code
68198
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