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M. Swamynathan M, Mathew G, Aziz A, Gordon C, Hillowe A, Wang H, Jhaveri A, Kendall J, Cox H, Giarrizzo M, Azabdaftari G, Rizzo RC, Diermeier SD, Ojima I, Bialkowska AB, Kaczocha M, Trotman LC. FABP5 Inhibition against PTEN-Mutant Therapy Resistant Prostate Cancer. Cancers (Basel) 2023; 16:60. [PMID: 38201488 PMCID: PMC10871093 DOI: 10.3390/cancers16010060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/20/2023] [Accepted: 12/13/2023] [Indexed: 01/12/2024] Open
Abstract
Resistance to standard of care taxane and androgen deprivation therapy (ADT) causes the vast majority of prostate cancer (PC) deaths worldwide. We have developed RapidCaP, an autochthonous genetically engineered mouse model of PC. It is driven by the loss of PTEN and p53, the most common driver events in PC patients with life-threatening diseases. As in human ADT, surgical castration of RapidCaP animals invariably results in disease relapse and death from the metastatic disease burden. Fatty Acid Binding Proteins (FABPs) are a large family of signaling lipid carriers. They have been suggested as drivers of multiple cancer types. Here we combine analysis of primary cancer cells from RapidCaP (RCaP cells) with large-scale patient datasets to show that among the 10 FABP paralogs, FABP5 is the PC-relevant target. Next, we show that RCaP cells are uniquely insensitive to both ADT and taxane treatment compared to a panel of human PC cell lines. Yet, they share an exquisite sensitivity to the small-molecule FABP5 inhibitor SBFI-103. We show that SBFI-103 is well tolerated and can strongly eliminate RCaP tumor cells in vivo. This provides a pre-clinical platform to fight incurable PC and suggests an important role for FABP5 in PTEN-deficient PC.
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Affiliation(s)
- Manojit M. Swamynathan
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
- Department of Molecular and Cell Biology, Stony Brook University, Stony Brook, NY 11794, USA
| | - Grinu Mathew
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
- The Eppley Institute for Research in Cancer and Allied Diseases, Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Andrei Aziz
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
| | - Chris Gordon
- Department of Anesthesiology, Stony Brook University, Stony Brook, NY 11794, USA; (C.G.); (A.H.)
| | - Andrew Hillowe
- Department of Anesthesiology, Stony Brook University, Stony Brook, NY 11794, USA; (C.G.); (A.H.)
| | - Hehe Wang
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA (I.O.)
| | - Aashna Jhaveri
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
| | - Jude Kendall
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
| | - Hilary Cox
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
| | - Michael Giarrizzo
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (M.G.); (A.B.B.)
| | - Gissou Azabdaftari
- Department of Anatomic Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - Robert C. Rizzo
- Department of Applied Mathematics and Statistics, Stony Brook University, Stony Brook, NY 11794, USA
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794, USA
| | - Sarah D. Diermeier
- Department of Biochemistry, University of Otago, Dunedin 9016, New Zealand;
| | - Iwao Ojima
- Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA (I.O.)
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794, USA
| | - Agnieszka B. Bialkowska
- Department of Medicine, Stony Brook University, Stony Brook, NY 11794, USA; (M.G.); (A.B.B.)
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794, USA
| | - Martin Kaczocha
- Department of Anesthesiology, Stony Brook University, Stony Brook, NY 11794, USA; (C.G.); (A.H.)
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794, USA
| | - Lloyd C. Trotman
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA (A.J.)
- Department of Molecular and Cell Biology, Stony Brook University, Stony Brook, NY 11794, USA
- Institute of Chemical Biology and Drug Discovery, Stony Brook University, Stony Brook, NY 11794, USA
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