Abstract |
Early stage localized prostate cancer (PCa) has an excellent prognosis; however, patient survival drops dramatically when PCa metastasizes. The molecular mechanisms underlying PCa metastasis are complex and remain unclear. Here, we examine the role of a new member of the fatty acid-binding protein (FABP) family, FABP12, in PCa progression. FABP12 is preferentially amplified and/or overexpressed in metastatic compared to primary tumors from both PCa patients and xenograft animal models. We show that FABP12 concurrently triggers metastatic phenotypes (induced epithelial-to-mesenchymal transition (EMT) leading to increased cell motility and invasion) and lipid bioenergetics (increased fatty acid uptake and accumulation, increased ATP production from fatty acid β-oxidation) in PCa cells, supporting increased reliance on fatty acids for energy production. Mechanistically, we show that FABP12 is a driver of PPARγ activation which, in turn, regulates FABP12's role in lipid metabolism and PCa progression. Our results point to a novel role for a FABP- PPAR pathway in promoting PCa metastasis through induction of EMT and lipid bioenergetics.
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Authors | Rong-Zong Liu, Won-Shik Choi, Saket Jain, Deepak Dinakaran, Xia Xu, Woo Hyun Han, Xiao-Hong Yang, Darryl D Glubrecht, Ronald B Moore, Hélène Lemieux, Roseline Godbout |
Journal | Molecular oncology
(Mol Oncol)
Vol. 14
Issue 12
Pg. 3100-3120
(12 2020)
ISSN: 1878-0261 [Electronic] United States |
PMID | 33031638
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | © 2020 The Authors. Published by FEBS Press and John Wiley & Sons Ltd. |
Chemical References |
- FABP12 protein, human
- Fatty Acid-Binding Proteins
- Lipids
- PPAR gamma
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Topics |
- Cell Line, Tumor
- Cell Movement
(genetics)
- Cell Transformation, Neoplastic
(pathology)
- Disease Progression
- Energy Metabolism
- Epithelial-Mesenchymal Transition
- Fatty Acid-Binding Proteins
(genetics, metabolism)
- Gene Dosage
- Humans
- Lipids
(chemistry)
- Male
- Neoplasm Invasiveness
- Neoplasm Metastasis
- PPAR gamma
(metabolism)
- Prostatic Neoplasms
(metabolism, pathology)
- Signal Transduction
- Xenograft Model Antitumor Assays
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