Mr. W. is a 66 year old man. Six years ago he w/as diagnosed with a moderately differentiated, localized prostate cancer (PCa) when he presented for a routine physical exam and was found to have a prostate specific antigen (PSA) blood test of 5.2. Digital rectal exam revealed no abnormalities but prostate ultrasound and biopsy revealed a Gleason 4+3 = 7 cancer in 2/12 biopsy cores (clinical stage TIcNxMx). Because Mr. W. was in otherwise excellent health, he chose to undergo a radical retro pubic prostatectomy and his prostate was removed. All of his lymph nodes were negative for cancer. He was considered to be cured of his disease. One year ago, Mr. W.'s PSA became detectable and he now has 3 lesions present on bone scan. He has metastatic prostate cancer, now incurable. Each year, approximately 40,000 men who """"""""should"""""""" have been cured of their prostate cancer by surgery or radiation therapy present with incurable metastatic disease that will manifest itself as metastatic lesions in the bone, usually years after primary treatment. The only explanation for this is that disseminated tumor cells (DTCs) are present in the bone microenvironment before surgery or radiation eradicated the primary tumor. Clearly the ability of DTCs to proliferate, undergo apoptosis or become dormant must occur soon after the initial arrest of circulating tumor cells (CTCs) in the marrow. Unquestionably, a greater understanding of the molecular events that regulate a DTCs ability to become, and remain dormant over long periods is crucial to define new therapeutic strategies to combat disease progression. How these cells traffic to the bone (Project 1), become dormant (Project 2), and then ultimately begin to proliferate (Project 3) is the subject of this TMEN application. The proposed TMEN is composed of three highly interactive and complementary projects that are supported by a Human Sample Acquisition Core (HSAC). Ultimately this work will lead to defining new therapeutic strategies to combat PCa skeletal metastases. The findings generated by this program will lead to a significant impact on the health and well being of men with PCa. The global hypothesis Is that DTCs target the hematopoietic stem cell (HSC) niche during metastasis. Once In the niche the niche regulates dormancy of DTCs. When DTCs are able to overcome the growth regulatory effects of the HSC niche, metastatic foci develop.

Public Health Relevance

This TMEN focuses on fundamental mechanisms related to tumor cell dormancy of PCa bone metastasis. We are confident that our observations are relevant to a more complete understanding prostate cancer skeletal disease. That new insights derived from these studies will lead to the development of innovative strategies to minimize the morbidity and mortality associated with bone metastatic prostate cancer.

Agency
National Institute of Health (NIH)
Institute
National Cancer Institute (NCI)
Type
Specialized Center--Cooperative Agreements (U54)
Project #
5U54CA163124-03
Application #
8536247
Study Section
Special Emphasis Panel (ZCA1-SRLB-3 (O1))
Program Officer
Mohla, Suresh
Project Start
2011-09-16
Project End
2016-07-31
Budget Start
2013-08-01
Budget End
2014-07-31
Support Year
3
Fiscal Year
2013
Total Cost
$487,171
Indirect Cost
$307,105
Name
University of Michigan Ann Arbor
Department
Dentistry
Type
Schools of Dentistry
DUNS #
073133571
City
Ann Arbor
State
MI
Country
United States
Zip Code
48109
Hill, Elliott E; Kim, Jin Koo; Jung, Younghun et al. (2018) Integrin alpha V beta 3 targeted dendrimer-rapamycin conjugate reduces fibroblast-mediated prostate tumor progression and metastasis. J Cell Biochem 119:8074-8083
de Groot, Amber E; Pienta, Kenneth J (2018) Epigenetic control of macrophage polarization: implications for targeting tumor-associated macrophages. Oncotarget 9:20908-20927
Wu, Amy; Liao, David; Kirilin, Vlamimir et al. (2018) Cancer dormancy and criticality from a game theory perspective. Cancer Converg 2:1
Park, Sun H; Keller, Evan T; Shiozawa, Yusuke (2018) Bone Marrow Microenvironment as a Regulator and Therapeutic Target for Prostate Cancer Bone Metastasis. Calcif Tissue Int 102:152-162
Lee, Eunsohl; Wang, Jingcheng; Jung, Younghun et al. (2018) Reduction of two histone marks, H3k9me3 and H3k27me3 by epidrug induces neuroendocrine differentiation in prostate cancer. J Cell Biochem 119:3697-3705
van der Toom, Emma E; Axelrod, Haley D; de la Rosette, Jean J et al. (2018) Prostate-specific markers to identify rare prostate cancer cells in liquid biopsies. Nat Rev Urol :
Valkenburg, Kenneth C; de Groot, Amber E; Pienta, Kenneth J (2018) Targeting the tumour stroma to improve cancer therapy. Nat Rev Clin Oncol 15:366-381
Chalfin, Heather J; Glavaris, Stephanie A; Malihi, Paymaneh D et al. (2018) Prostate Cancer Disseminated Tumor Cells are Rarely Detected in the Bone Marrow of Patients with Localized Disease Undergoing Radical Prostatectomy across Multiple Rare Cell Detection Platforms. J Urol 199:1494-1501
Decker, A M; Taichman, L S; D'Silva, N J et al. (2018) Periodontal Treatment in Cancer Patients: An Interdisciplinary Approach. Curr Oral Health Rep 5:7-12
Maley, Carlo C; Aktipis, Athena; Graham, Trevor A et al. (2017) Classifying the evolutionary and ecological features of neoplasms. Nat Rev Cancer 17:605-619

Showing the most recent 10 out of 79 publications