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Warren WG, Osborn M, Duffy P, Yates A, O'Sullivan SE. Potential safety implications of fatty acid-binding protein inhibition. Toxicol Appl Pharmacol 2024; 491:117079. [PMID: 39218163 DOI: 10.1016/j.taap.2024.117079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/15/2024] [Accepted: 08/25/2024] [Indexed: 09/04/2024]
Abstract
Fatty acid-binding proteins (FABPs) are small intracellular proteins that regulate fatty acid metabolism, transport, and signalling. There are ten known human isoforms, many of which are upregulated and involved in clinical pathologies. As such, FABP inhibition may be beneficial in disease states such as cancer, and those involving the cardiovascular system, metabolism, immunity, and cognition. Recently, a potent, selective FABP5 inhibitor (ART26.12), with 90-fold selectivity to FABP3 and 20-fold selectivity to FABP7, was found to be remarkably benign, with a no-observed-adverse-effect level of 1000 mg/kg in rats and dogs, showing no genotoxicity, cardiovascular, central, or respiratory toxicity. To understand the potential implication of FABP inhibition more fully, this review systematically assessed literature investigating genetic knockout, knockdown, and pharmacological inhibition of FABP3, FABP4, FABP5, or FABP7. Analysis of the literature revealed that animals bred not to express FABPs showed the most biological effects, suggesting key roles of these proteins during development. FABP ablation sometimes exacerbated symptoms of disease models, particularly those linked to metabolism, inflammatory and immune responses, cardiac contractility, neurogenesis, and cognition. However, FABP inhibition (genetic silencing or pharmacological) had a positive effect in many more disease conditions. Several polymorphisms of each FABP gene have also been linked to pathological conditions, but it was unclear how several polymorphisms affected protein function. Overall, analysis of the literature to date suggests that pharmacological inhibition of FABPs in adults is of low risk.
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Affiliation(s)
- William G Warren
- Artelo Biosciences Limited, Alderley Park, Cheshire SK10 4TG, United Kingdom.
| | - Myles Osborn
- Artelo Biosciences Limited, Alderley Park, Cheshire SK10 4TG, United Kingdom
| | - Paul Duffy
- Apconix Ltd., Alderley Park, Cheshire SK10 4TG, United Kingdom
| | - Andrew Yates
- Artelo Biosciences Limited, Alderley Park, Cheshire SK10 4TG, United Kingdom
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Märkl B, Reitsam NG, Grochowski P, Waidhauser J, Grosser B. The SARIFA biomarker in the context of basic research of lipid-driven cancers. NPJ Precis Oncol 2024; 8:165. [PMID: 39085485 PMCID: PMC11291993 DOI: 10.1038/s41698-024-00662-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 07/19/2024] [Indexed: 08/02/2024] Open
Abstract
SARIFA was very recently introduced as a histomorphological biomarker with strong prognostic power for colorectal, gastric, prostate, and pancreatic cancer. It is characterized by the direct contact between tumor cells and adipocytes due to a lack of stromal reaction. This can be easily evaluated on routinely available H&E-slides with high interobserver agreement. SARIFA also reflects a specific tumor biology driven by metabolic reprogramming. Tumor cells in SARIFA-positive tumors benefit from direct interaction with adipocytes as an external source of lipids. Numerous studies have shown that lipid metabolism is crucial in carcinogenesis and cancer progression. We found that the interaction between tumor cells and adipocytes was not triggered by obesity, as previously assumed. Instead, we believe that this is due to an immunological mechanism. Knowledge about lipid metabolism in cancer from basic experiments can be transferred to develop strategies targeting this reprogramed metabolism.
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Affiliation(s)
- Bruno Märkl
- Pathology, Medical Faculty Augsburg, University of Augsburg, Augsburg, Germany.
- Bavarian Cancer Research Center (BZKF), Augsburg, Germany.
- WERA Comprehensive Cancer Center, Augsburg, Germany.
| | - Nic G Reitsam
- Pathology, Medical Faculty Augsburg, University of Augsburg, Augsburg, Germany
- Bavarian Cancer Research Center (BZKF), Augsburg, Germany
- WERA Comprehensive Cancer Center, Augsburg, Germany
| | - Przemyslaw Grochowski
- Pathology, Medical Faculty Augsburg, University of Augsburg, Augsburg, Germany
- Bavarian Cancer Research Center (BZKF), Augsburg, Germany
- WERA Comprehensive Cancer Center, Augsburg, Germany
| | - Johanna Waidhauser
- Bavarian Cancer Research Center (BZKF), Augsburg, Germany
- WERA Comprehensive Cancer Center, Augsburg, Germany
- Hematology and Oncology, Medical Faculty Augsburg, University of Augsburg, Augsburg, Germany
| | - Bianca Grosser
- Pathology, Medical Faculty Augsburg, University of Augsburg, Augsburg, Germany
- Bavarian Cancer Research Center (BZKF), Augsburg, Germany
- WERA Comprehensive Cancer Center, Augsburg, Germany
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Gupta A, Das D, Taneja R. Targeting Dysregulated Lipid Metabolism in Cancer with Pharmacological Inhibitors. Cancers (Basel) 2024; 16:1313. [PMID: 38610991 PMCID: PMC11010992 DOI: 10.3390/cancers16071313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/19/2024] [Accepted: 03/24/2024] [Indexed: 04/14/2024] Open
Abstract
Metabolic plasticity is recognised as a hallmark of cancer cells, enabling adaptation to microenvironmental changes throughout tumour progression. A dysregulated lipid metabolism plays a pivotal role in promoting oncogenesis. Oncogenic signalling pathways, such as PI3K/AKT/mTOR, JAK/STAT, Hippo, and NF-kB, intersect with the lipid metabolism to drive tumour progression. Furthermore, altered lipid signalling in the tumour microenvironment contributes to immune dysfunction, exacerbating oncogenesis. This review examines the role of lipid metabolism in tumour initiation, invasion, metastasis, and cancer stem cell maintenance. We highlight cybernetic networks in lipid metabolism to uncover avenues for cancer diagnostics, prognostics, and therapeutics.
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Affiliation(s)
| | | | - Reshma Taneja
- Department of Physiology, Healthy Longevity and NUS Centre for Cancer Research Translation Research Program, Yong Loo Lin School of Medicine, National University of Singapore (NUS), 2 Medical Drive, MD9, Singapore 117593, Singapore
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Grunt TW, Wagner R, Ries A, Berghoff AS, Preusser M, Grusch M, Valent P. Targeting endogenous fatty acid synthesis stimulates the migration of ovarian cancer cells to adipocytes and promotes the transport of fatty acids from adipocytes to cancer cells. Int J Oncol 2024; 64:24. [PMID: 38214315 PMCID: PMC10807641 DOI: 10.3892/ijo.2024.5612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 12/08/2023] [Indexed: 01/13/2024] Open
Abstract
Despite significant advances in oncology, 1 of 108 female patients succumb to ovarian cancer (OC) each year. Improved novel treatments against this aggressive disease would be a major improvement. The growth of OC cells has been demonstrated to be highly dependent on lipids. OC cells are abundantly present in the abdominal cavity and omentum, the main sites of OC expansion. Accordingly, it has been attempted not only to block the hyperactive synthesis of fatty acids (FAs) in cancer cells, but also to disrupt lipid supply. While either strategy has yielded promising results as monotherapy, the induction of resistance pathways diminishing the anticancer effects is yet conceivable. The endogenous regulation of lipid biosynthesis in OC has been extensively studied. However, the role of stromal cells in the modulation of the effects of anti‑lipogenic drugs has not yet been well documented. The present study thus examined the interaction between OC cells and associated stromal cells, when de novo FA synthesis was blocked. It has recently been revealed by the authors that when FA are provided to OC cells in monoculture, the lipid deficiency induced by pharmacological inhibition of FA synthase (FASN), the key enzyme of endogenous FA synthesis, cannot be compensated through an increased FA uptake by OC cells. In the present study, OC cells were co‑cultured with adipocytes preloaded with fluorescent FA and the effects of FASN‑inhibition on OC homing to adipocytes and the transcellular delivery of fluorescent FA from adipocytes to OC cells were examined. The FASN inhibitors, G28UCM and Fasnall, stimulated the spontaneous migration of A2780 OC cells in a concentration‑dependent manner and stimulated the transfer of FA from adipocytes to OC cells. Similar effects were observed with all types of adipocytes tested. The models applied in the present study demonstrated that co‑cultured cancer‑associated adipocytes may attenuate the anticancer effects of FASN inhibitors by attracting tumor cells and by supplying the cells with FA. This lipid‑mediated dependency may provide a rationale for the design of new treatment approaches for the treatment of OC.
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Affiliation(s)
- Thomas W. Grunt
- Cell Signaling and Metabolism Networks Program, Division of Oncology, Department of Medicine I, Medical University of Vienna, A-1090 Vienna, Austria
- Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, A-1090 Vienna, Austria
| | - Renate Wagner
- Cell Signaling and Metabolism Networks Program, Division of Oncology, Department of Medicine I, Medical University of Vienna, A-1090 Vienna, Austria
- Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
| | - Alexander Ries
- Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
- Center for Cancer Research, Medical University of Vienna, A-1090 Vienna, Austria
| | - Anna S. Berghoff
- Division of Oncology, Department of Medicine I, Medical University of Vienna, A-1090 Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Medical University of Vienna, A-1090 Vienna, Austria
| | - Matthias Preusser
- Division of Oncology, Department of Medicine I, Medical University of Vienna, A-1090 Vienna, Austria
- Christian Doppler Laboratory for Personalized Immunotherapy, Medical University of Vienna, A-1090 Vienna, Austria
| | - Michael Grusch
- Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
- Center for Cancer Research, Medical University of Vienna, A-1090 Vienna, Austria
| | - Peter Valent
- Comprehensive Cancer Center, Medical University of Vienna, A-1090 Vienna, Austria
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, A-1090 Vienna, Austria
- Division of Hematology, Department of Medicine I, Medical University of Vienna, A-1090 Vienna, Austria
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Ma Q, Wen L, Tian Y, Ma L, Wen Z, Kun Y, Xu M, Liu X. Sulfosuccinimidyl oleate ameliorates the high-fat diet-induced obesity syndrome by reducing intestinal and hepatic absorption. Front Pharmacol 2023; 14:1193006. [PMID: 37305546 PMCID: PMC10254412 DOI: 10.3389/fphar.2023.1193006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 05/04/2023] [Indexed: 06/13/2023] Open
Abstract
Background: A high-fat Western diet is a risk factor for obesity and steatosis. Reducing intestinal absorption of a high-fat diet (HFD) is a feasible strategy to control obesity. Sulfosuccinimidyl oleate (SSO) inhibits intestinal fatty acid transport. Therefore, the aim of this study was to investigate the effects of SSO on HFD-induced glucose and lipid metabolism in mice and its possible underlying mechanisms. Methods: Male C57/BL were fed a HFD (60% calories) for 12 weeks and were administered an oral dose of SSO (50 mg/kg/day). The expression of lipid absorption genes (CD36, MTTP, and DGAT1) and the serum levels of triglycerides (TGs), total cholesterol (TC), and free fatty acids (FFAs) were detected. Lipid distribution in the liver was detected by oil red and hematoxylin and eosin staining. In addition, serum levels of inflammatory factors, alanine aminotransferase (ALT), and aspartate aminotransferase (AST) were measured to detect side effects. Results: SSO was effective in the treatment of obesity and metabolic syndrome induced by HFD in mice. It attenuated the assembly of intestinal epithelial chylomicrons by inhibiting intestinal epithelial transport and absorption of fatty acids, thereby reducing the gene expression levels of MTTP and DGAT1, resulting in decreased plasma TG and FFA levels. At the same time, it inhibited the transport of fatty acids in the liver and improved the steatosis induced by a HFD. The results of oil red staining showed that SSO treatment can reduce lipid accumulation in the liver by 70%, with no drug-induced liver injury detected on the basis of interleukin-6, C-reactive protein, ALT, and AST levels. In addition, SSO treatment significantly improved insulin resistance, decreased fasting blood glucose levels, and improved glucose tolerance in HFD-fed mice. Conclusion: SSO is effective in the treatment of obesity and metabolic syndrome induced by a HFD in mice. SSO reduces intestinal fatty acid absorption by reducing the inhibition of intestinal CD36 expression, followed by decreased TG and FFA levels, which attenuates HFD-induced fatty liver.
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Affiliation(s)
- Qiming Ma
- The Department of General Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Li Wen
- Department of Neonatology, Ganzhou Maternal and Child Health Centre, Ganzhou, Jiangxi, China
| | - Yanxia Tian
- Department of Blood Transfusion, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Liqin Ma
- The Second Department of Surgery, People’s Hospital of Shicheng County, Ganzhou, Jiangxi, China
| | - Zhangsheng Wen
- The CT Room of the Imaging Department, People’s Hospital of Shicheng County, Ganzhou, Jiangxi, China
| | - Yang Kun
- Department of Blood Transfusion, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Mengping Xu
- The Department of General Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Xiaoping Liu
- The Department of General Surgery, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
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Nadhan R, Kashyap S, Ha JH, Jayaraman M, Song YS, Isidoro C, Dhanasekaran DN. Targeting Oncometabolites in Peritoneal Cancers: Preclinical Insights and Therapeutic Strategies. Metabolites 2023; 13:618. [PMID: 37233659 PMCID: PMC10222714 DOI: 10.3390/metabo13050618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/27/2023] [Accepted: 04/28/2023] [Indexed: 05/27/2023] Open
Abstract
Peritoneal cancers present significant clinical challenges with poor prognosis. Understanding the role of cancer cell metabolism and cancer-promoting metabolites in peritoneal cancers can provide new insights into the mechanisms that drive tumor progression and can identify novel therapeutic targets and biomarkers for early detection, prognosis, and treatment response. Cancer cells dynamically reprogram their metabolism to facilitate tumor growth and overcome metabolic stress, with cancer-promoting metabolites such as kynurenines, lactate, and sphingosine-1-phosphate promoting cell proliferation, angiogenesis, and immune evasion. Targeting cancer-promoting metabolites could also lead to the development of effective combinatorial and adjuvant therapies involving metabolic inhibitors for the treatment of peritoneal cancers. With the observed metabolomic heterogeneity in cancer patients, defining peritoneal cancer metabolome and cancer-promoting metabolites holds great promise for improving outcomes for patients with peritoneal tumors and advancing the field of precision cancer medicine. This review provides an overview of the metabolic signatures of peritoneal cancer cells, explores the role of cancer-promoting metabolites as potential therapeutic targets, and discusses the implications for advancing precision cancer medicine in peritoneal cancers.
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Affiliation(s)
- Revathy Nadhan
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.N.); (S.K.); (J.H.H.); (M.J.)
| | - Srishti Kashyap
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.N.); (S.K.); (J.H.H.); (M.J.)
| | - Ji Hee Ha
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.N.); (S.K.); (J.H.H.); (M.J.)
- Department of Cell Biology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Muralidharan Jayaraman
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.N.); (S.K.); (J.H.H.); (M.J.)
- Department of Cell Biology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Yong Sang Song
- Department of Obstetrics and Gynecology, Cancer Research Institute, College of Medicine, Seoul National University, Seoul 151-921, Republic of Korea
| | - Ciro Isidoro
- Laboratory of Molecular Pathology and NanoBioImaging, Department of Health Sciences, Università del Piemonte Orientale, 28100 Novara, Italy;
| | - Danny N. Dhanasekaran
- Stephenson Cancer Center, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (R.N.); (S.K.); (J.H.H.); (M.J.)
- Department of Cell Biology, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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