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Tedeschi G, Palomba F, Scipioni L, Digman MA. Multimodal Phasor Approach to study breast cancer cells invasion in 3D spheroid model. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.10.598307. [PMID: 38915530 PMCID: PMC11195137 DOI: 10.1101/2024.06.10.598307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
We implemented a multimodal set of functional imaging techniques optimized for deep-tissue imaging to investigate how cancer cells invade surrounding tissues and how their physiological properties change in the process. As a model for cancer invasion of the extracellular matrix, we created 3D spheroids from triple-negative breast cancer cells (MDA-MB-231) and non-tumorigenic breast epithelial cells (MCF-10A). We analyzed multiple hallmarks of cancer within the same spheroid by combining a number of imaging techniques, such as metabolic imaging of NADH by Fluorescence Lifetime Imaging Microscopy (NADH-FLIM), hyperspectral imaging of a solvatochromic lipophilic dye (Nile Red) and extracellular matrix imaging by Second Harmonic Generation (SHG). We included phasor-based bioimage analysis of spheroids at three different time points, tracking both morphological and biological properties, including cellular metabolism, fatty acids storage, and collagen organization. Employing this multimodal deep-imaging framework, we observed and quantified cancer cell plasticity in response to changes in the environment composition.
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Affiliation(s)
- Giulia Tedeschi
- Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California, Irvine, Irvine, CA 92617 (USA)
| | - Francesco Palomba
- Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California, Irvine, Irvine, CA 92617 (USA)
| | - Lorenzo Scipioni
- Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California, Irvine, Irvine, CA 92617 (USA)
| | - Michelle A Digman
- Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California, Irvine, Irvine, CA 92617 (USA)
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Masoudi M, Moti D, Masoudi R, Auwal A, Hossain MM, Pronoy TUH, Rashel KM, Gopalan V, Islam F. Metabolic adaptations in cancer stem cells: A key to therapy resistance. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167164. [PMID: 38599259 DOI: 10.1016/j.bbadis.2024.167164] [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: 09/29/2023] [Revised: 03/31/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024]
Abstract
Cancer stem cells (CSCs) are a subset of tumor cells that can initiate and sustain tumor growth and cause recurrence and metastasis. CSCs are particularly resistant to conventional therapies compared to their counterparts, owing greatly to their intrinsic metabolic plasticity. Metabolic plasticity allows CSCs to switch between different energy production and usage pathways based on environmental and extrinsic factors, including conditions imposed by conventional cancer therapies. To cope with nutrient deprivation and therapeutic stress, CSCs can transpose between glycolysis and oxidative phosphorylation (OXPHOS) metabolism. The mechanism behind the metabolic pathway switch in CSCs is not fully understood, however, some evidence suggests that the tumor microenvironment (TME) may play an influential role mediated by its release of signals, such as Wnt/β-catenin and Notch pathways, as well as a background of hypoxia. Exploring the factors that promote metabolic plasticity in CSCs offers the possibility of eventually developing therapies that may more effectively eliminate the crucial tumor cell subtype and alter the disease course substantially.
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Affiliation(s)
- Matthew Masoudi
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia
| | - Dilpreet Moti
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia
| | - Raha Masoudi
- Faculty of Science, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Abdul Auwal
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - M Matakabbir Hossain
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Tasfik Ul Haque Pronoy
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Khan Mohammad Rashel
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi 6205, Bangladesh
| | - Vinod Gopalan
- School of Medicine and Dentistry, Griffith University, Gold Coast 4222, Australia
| | - Farhadul Islam
- Department of Biochemistry and Molecular Biology, University of Rajshahi, Rajshahi 6205, Bangladesh.
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3
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Fehsel K, Bouvier ML, Capobianco L, Lunetti P, Klein B, Oldiges M, Majora M, Löffler S. Neuroreceptor Inhibition by Clozapine Triggers Mitohormesis and Metabolic Reprogramming in Human Blood Cells. Cells 2024; 13:762. [PMID: 38727298 PMCID: PMC11083702 DOI: 10.3390/cells13090762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
The antipsychotic drug clozapine demonstrates superior efficacy in treatment-resistant schizophrenia, but its intracellular mode of action is not completely understood. Here, we analysed the effects of clozapine (2.5-20 µM) on metabolic fluxes, cell respiration, and intracellular ATP in human HL60 cells. Some results were confirmed in leukocytes of clozapine-treated patients. Neuroreceptor inhibition under clozapine reduced Akt activation with decreased glucose uptake, thereby inducing ER stress and the unfolded protein response (UPR). Metabolic profiling by liquid-chromatography/mass-spectrometry revealed downregulation of glycolysis and the pentose phosphate pathway, thereby saving glucose to keep the electron transport chain working. Mitochondrial respiration was dampened by upregulation of the F0F1-ATPase inhibitory factor 1 (IF1) leading to 30-40% lower oxygen consumption in HL60 cells. Blocking IF1 expression by cotreatment with epigallocatechin-3-gallate (EGCG) increased apoptosis of HL60 cells. Upregulation of the mitochondrial citrate carrier shifted excess citrate to the cytosol for use in lipogenesis and for storage as triacylglycerol in lipid droplets (LDs). Accordingly, clozapine-treated HL60 cells and leukocytes from clozapine-treated patients contain more LDs than untreated cells. Since mitochondrial disturbances are described in the pathophysiology of schizophrenia, clozapine-induced mitohormesis is an excellent way to escape energy deficits and improve cell survival.
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Affiliation(s)
- Karin Fehsel
- Department of Psychiatry and Psychotherapy, Medical Faculty, Heinrich-Heine-University, Bergische Landstrasse 2, 40629 Duesseldorf, Germany;
| | - Marie-Luise Bouvier
- Department of Psychiatry and Psychotherapy, Medical Faculty, Heinrich-Heine-University, Bergische Landstrasse 2, 40629 Duesseldorf, Germany;
| | - Loredana Capobianco
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (L.C.); (P.L.)
| | - Paola Lunetti
- Department of Biological and Environmental Sciences and Technologies, University of Salento, 73100 Lecce, Italy; (L.C.); (P.L.)
| | - Bianca Klein
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich, Leo-Brandt-Straße, 52428 Jülich, Germany; (B.K.); (M.O.)
| | - Marko Oldiges
- Institute of Bio- and Geosciences, IBG-1: Biotechnology, Forschungszentrum Jülich, Leo-Brandt-Straße, 52428 Jülich, Germany; (B.K.); (M.O.)
| | - Marc Majora
- Leibniz Research Institute for Environmental Medicine (IUF), Auf’m Hennekamp 50, 40225 Düsseldorf, Germany;
| | - Stefan Löffler
- Clinic for Psychiatry, Psychotherapy and Psychosomatics, Sana Klinikum Offenbach, Teaching Hospital of Goethe University, Starkenburgring 66, 63069 Offenbach, Germany;
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Cabodevilla AG, Son N, Goldberg IJ. Intracellular lipase and regulation of the lipid droplet. Curr Opin Lipidol 2024; 35:85-92. [PMID: 38447014 PMCID: PMC10919935 DOI: 10.1097/mol.0000000000000918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
PURPOSE OF REVIEW Lipid droplets are increasingly recognized as distinct intracellular organelles that have functions exclusive to the storage of energetic lipids. Lipid droplets modulate macrophage inflammatory phenotype, control the availability of energy for muscle function, store excess lipid, sequester toxic lipids, modulate mitochondrial activity, and allow transfer of fatty acids between tissues. RECENT FINDINGS There have been several major advances in our understanding of the formation, dissolution, and function of this organelle during the past two years. These include new information on movement and partition of amphipathic proteins between the cytosol and lipid droplet surface, molecular determinants of lipid droplet formation, and pathways leading to lipid droplet hydrophobic lipid formation. Rapid advances in mitochondrial biology have also begun to define differences in their function and partnering with lipid droplets to modulate lipid storage versus oxidation. SUMMARY This relationship of lipid droplets biology and cellular function provides new understanding of an important cellular organelle that influences muscle function, adipose lipid storage, and diseases of lipotoxicity.
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Affiliation(s)
- Ainara G Cabodevilla
- Division of Endocrinology, New York University Grossman School of Medicine, New York, New York, USA
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Li C, Hao B, Yang H, Wang K, Fan L, Xiao W. Protein aggregation and biomolecular condensation in hypoxic environments (Review). Int J Mol Med 2024; 53:33. [PMID: 38362920 PMCID: PMC10903932 DOI: 10.3892/ijmm.2024.5357] [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: 11/08/2023] [Accepted: 01/15/2024] [Indexed: 02/17/2024] Open
Abstract
Due to molecular forces, biomacromolecules assemble into liquid condensates or solid aggregates, and their corresponding formation and dissolution processes are controlled. Protein homeostasis is disrupted by increasing age or environmental stress, leading to irreversible protein aggregation. Hypoxic pressure is an important factor in this process, and uncontrolled protein aggregation has been widely observed in hypoxia‑related conditions such as neurodegenerative disease, cardiovascular disease, hypoxic brain injury and cancer. Biomolecular condensates are also high‑order complexes assembled from macromolecules. Although they exist in different phase from protein aggregates, they are in dynamic balance under certain conditions, and their activation or assembly are considered as important regulatory processes in cell survival with hypoxic pressure. Therefore, a better understanding of the relationship between hypoxic stress, protein aggregation and biomolecular condensation will bring marked benefits in the clinical treatment of various diseases. The aim of the present review was to summarize the underlying mechanisms of aggregate assembly and dissolution induced by hypoxic conditions, and address recent breakthroughs in understanding the role of aggregates in hypoxic‑related diseases, given the hypotheses that hypoxia induces macromolecular assemblage changes from a liquid to a solid phase, and that adenosine triphosphate depletion and ATP‑driven inactivation of multiple protein chaperones play important roles among the process. Moreover, it is anticipated that an improved understanding of the adaptation in hypoxic environments could extend the overall survival of patients and provide new strategies for hypoxic‑related diseases.
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Affiliation(s)
- Chaoqun Li
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, P.R. China
- Institute of Energy Metabolism and Health, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Bingjie Hao
- Institute of Energy Metabolism and Health, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Haiguang Yang
- Institute of Energy Metabolism and Health, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Kai Wang
- Institute of Energy Metabolism and Health, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Lihong Fan
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, P.R. China
- Institute of Energy Metabolism and Health, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Weihua Xiao
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, P.R. China
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Guerrero-Ochoa P, Rodríguez-Zapater S, Anel A, Esteban LM, Camón-Fernández A, Espilez-Ortiz R, Gil-Sanz MJ, Borque-Fernando Á. Prostate Cancer and the Mevalonate Pathway. Int J Mol Sci 2024; 25:2152. [PMID: 38396837 PMCID: PMC10888820 DOI: 10.3390/ijms25042152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/04/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
Antineoplastic therapies for prostate cancer (PCa) have traditionally centered around the androgen receptor (AR) pathway, which has demonstrated a significant role in oncogenesis. Nevertheless, it is becoming progressively apparent that therapeutic strategies must diversify their focus due to the emergence of resistance mechanisms that the tumor employs when subjected to monomolecular treatments. This review illustrates how the dysregulation of the lipid metabolic pathway constitutes a survival strategy adopted by tumors to evade eradication efforts. Integrating this aspect into oncological management could prove valuable in combating PCa.
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Affiliation(s)
- Patricia Guerrero-Ochoa
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
| | - Sergio Rodríguez-Zapater
- Minimally Invasive Research Group (GITMI), Faculty of Veterinary Medicine, University of Zaragoza, 50009 Zaragoza, Spain;
| | - Alberto Anel
- Department of Biochemistry and Molecular and Cellular Biology, Faculty of Sciences, University of Zaragoza, 50009 Zaragoza, Spain;
| | - Luis Mariano Esteban
- Department of Applied Mathematics, Escuela Universitaria Politécnica de La Almunia, Institute for Biocomputation and Physic of Complex Systems, Universidad de Zaragoza, 50100 La Almunia de Doña Godina, Spain
| | - Alejandro Camón-Fernández
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
| | - Raquel Espilez-Ortiz
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
- Department of Urology, Miguel Servet University Hospital, 50009 Zaragoza, Spain
- Area of Urology, Department of Surgery, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
| | - María Jesús Gil-Sanz
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
- Department of Urology, Miguel Servet University Hospital, 50009 Zaragoza, Spain
| | - Ángel Borque-Fernando
- Health Research Institute of Aragon Foundation, 50009 Zaragoza, Spain; (P.G.-O.); (A.C.-F.); (R.E.-O.); (M.J.G.-S.)
- Department of Applied Mathematics, Escuela Universitaria Politécnica de La Almunia, Institute for Biocomputation and Physic of Complex Systems, Universidad de Zaragoza, 50100 La Almunia de Doña Godina, Spain
- Department of Urology, Miguel Servet University Hospital, 50009 Zaragoza, Spain
- Area of Urology, Department of Surgery, Faculty of Medicine, University of Zaragoza, 50009 Zaragoza, Spain
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7
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Chauhan SS, Casillas AL, Vizzerra AD, Liou H, Clements AN, Flores CE, Prevost CT, Kashatus DF, Snider AJ, Snider JM, Warfel NA. PIM1 drives lipid droplet accumulation to promote proliferation and survival in prostate cancer. Oncogene 2024; 43:406-419. [PMID: 38097734 PMCID: PMC10837079 DOI: 10.1038/s41388-023-02914-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/24/2023] [Accepted: 11/30/2023] [Indexed: 02/04/2024]
Abstract
Lipid droplets (LDs) are dynamic organelles with a neutral lipid core surrounded by a phospholipid monolayer. Solid tumors exhibit LD accumulation, and it is believed that LDs promote cell survival by providing an energy source during energy deprivation. However, the precise mechanisms controlling LD accumulation and utilization in prostate cancer are not well known. Here, we show peroxisome proliferator-activated receptor α (PPARα) acts downstream of PIM1 kinase to accelerate LD accumulation and promote cell proliferation in prostate cancer. Mechanistically, PIM1 inactivates glycogen synthase kinase 3 beta (GSK3β) via serine 9 phosphorylation. GSK3β inhibition stabilizes PPARα and enhances the transcription of genes linked to peroxisomal biogenesis (PEX3 and PEX5) and LD growth (Tip47). The effects of PIM1 on LD accumulation are abrogated with GW6471, a specific inhibitor for PPARα. Notably, LD accumulation downstream of PIM1 provides a significant survival advantage for prostate cancer cells during nutrient stress, such as glucose depletion. Inhibiting PIM reduces LD accumulation in vivo alongside slow tumor growth and proliferation. Furthermore, TKO mice, lacking PIM isoforms, exhibit suppression in circulating triglycerides. Overall, our findings establish PIM1 as an important regulator of LD accumulation through GSK3β-PPARα signaling axis to promote cell proliferation and survival during nutrient stress.
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Affiliation(s)
- Shailender S Chauhan
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, 85724, USA.
| | - Andrea L Casillas
- Cancer Biology Graduate Program, University of Arizona, Tucson, AZ, 85721, USA
| | - Andres D Vizzerra
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, 85724, USA
| | - Hope Liou
- Cancer Biology Graduate Program, University of Arizona, Tucson, AZ, 85721, USA
| | - Amber N Clements
- Cancer Biology Graduate Program, University of Arizona, Tucson, AZ, 85721, USA
| | - Caitlyn E Flores
- Cancer Biology Graduate Program, University of Arizona, Tucson, AZ, 85721, USA
| | - Christopher T Prevost
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA, 22908, USA
| | - David F Kashatus
- Department of Microbiology, Immunology and Cancer Biology, University of Virginia Health System, Charlottesville, VA, 22908, USA
| | - Ashley J Snider
- Department of Nutritional Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Justin M Snider
- Department of Nutritional Sciences, College of Agriculture and Life Sciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Noel A Warfel
- Department of Cellular and Molecular Medicine, University of Arizona, Tucson, AZ, 85724, USA.
- University of Arizona Cancer Center, University of Arizona, Tucson, AZ, 85724, USA.
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8
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Wang S, Huang X, Zhao S, Lv J, Li Y, Wang S, Guo J, Wang Y, Wang R, Zhang M, Qiu W. Progressions of the correlation between lipid metabolism and immune infiltration characteristics in gastric cancer and identification of BCHE as a potential biomarker. Front Immunol 2024; 15:1327565. [PMID: 38357546 PMCID: PMC10864593 DOI: 10.3389/fimmu.2024.1327565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 01/17/2024] [Indexed: 02/16/2024] Open
Abstract
Background Globally, gastric cancer (GC) is a category of prevalent malignant tumors. Its high occurrence and fatality rates represent a severe threat to public health. According to recent research, lipid metabolism (LM) reprogramming impacts immune cells' ordinary function and is critical for the onset and development of cancer. Consequently, the article conducted a sophisticated bioinformatics analysis to explore the potential connection between LM and GC. Methods We first undertook a differential analysis of the TCGA queue to recognize lipid metabolism-related genes (LRGs) that are differentially expressed. Subsequently, we utilized the LASSO and Cox regression analyses to create a predictive signature and validated it with the GSE15459 cohort. Furthermore, we examined somatic mutations, immune checkpoints, tumor immune dysfunction and exclusion (TIDE), and drug sensitivity analyses to forecast the signature's immunotherapy responses. Results Kaplan-Meier (K-M) curves exhibited considerably longer OS and PFS (p<0.001) of the low-risk (LR) group. PCA analysis and ROC curves evaluated the model's predictive efficacy. Additionally, GSEA analysis demonstrated that a multitude of carcinogenic and matrix-related pathways were much in the high-risk (HR) group. We then developed a nomogram to enhance its clinical practicality, and we quantitatively analyzed tumor-infiltrating immune cells (TIICs) using the CIBERSORT and ssGSEA algorithms. The low-risk group has a lower likelihood of immune escape and more effective in chemotherapy and immunotherapy. Eventually, we selected BCHE as a potential biomarker for further research and validated its expression. Next, we conducted a series of cell experiments (including CCK-8 assay, Colony formation assay, wound healing assay and Transwell assays) to prove the impact of BCHE on gastric cancer biological behavior. Discussion Our research illustrated the possible consequences of lipid metabolism in GC, and we identified BCHE as a potential therapeutic target for GC. The LRG-based signature could independently forecast the outcome of GC patients and guide personalized therapy.
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Affiliation(s)
- Shibo Wang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Xiaojuan Huang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shufen Zhao
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jing Lv
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yi Li
- Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shasha Wang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jing Guo
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yan Wang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Rui Wang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mengqi Zhang
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wensheng Qiu
- Department of Oncology, The Affiliated Hospital of Qingdao University, Qingdao, China
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Bingi T, Cotton K, Comer C, Niklison-Chirou MV. Are lipid droplets the picnic basket of brain tumours? Cell Death Discov 2024; 10:31. [PMID: 38228582 DOI: 10.1038/s41420-024-01797-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/25/2023] [Accepted: 01/02/2024] [Indexed: 01/18/2024] Open
Abstract
Are lipid droplets (LDs) necessary to maintain the viability of brain tumour cells as they move to new nutrient-poor environments? In turn, could cancers be targeted by attacking what you might think of as the cancer cells' picnic basket? Lipid metabolism reprogramming, represented by increased lipid uptake, activation of de novo lipogenesis and increased lipid storage, is a newly identified hallmark of cancers. Recently, the presence of lipid droplets has been detected in several types of cancers, such as metastatic hepatocellular carcinoma, pancreatic and breast. LDs are storage organelles that provide a source of nutrients which may drive metastasis in different tumours. Currently, several roles of LDs have been posited in various tumours. This perspective aims to review and discuss the currently understood role of LDs in brain tumours.
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Affiliation(s)
- Tanmayi Bingi
- Life Sciences Department, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Kian Cotton
- Life Sciences Department, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Charley Comer
- Life Sciences Department, University of Bath, Claverton Down, Bath, BA2 7AY, UK
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10
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Xu X, Wang J, Xu L, Li P, Jiang P. p53 suppresses lipid droplet-fueled tumorigenesis through phosphatidylcholine. J Clin Invest 2024; 134:e171788. [PMID: 38194288 PMCID: PMC10866454 DOI: 10.1172/jci171788] [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: 04/25/2023] [Accepted: 12/29/2023] [Indexed: 01/10/2024] Open
Abstract
Choline deficiency causes disorders including hepatic abnormalities and is associated with an increased risk of multiple types of cancer. Here, by choline-free diet-associated RNA-Seq analyses, we found that the tumor suppressor p53 drives the Kennedy pathway via PCYT1B to control the growth of lipid droplets (LDs) and their fueling role in tumorigenesis. Mechanistically, through upregulation of PCYT1B, p53 channeled depleted choline stores to phosphatidylcholine (PC) biosynthesis during choline starvation, thus preventing LD coalescence. Cells lacking p53 failed to complete this response to choline depletion, leading to hepatic steatosis and tumorigenesis, and these effects could be reversed by enforcement of PCYT1B expression or restoration of PC abundance. Furthermore, loss of p53 or defects in the Kennedy pathway increased surface localization of hormone-sensitive lipase on LDs to release specific fatty acids that fueled tumor cells in vivo and in vitro. Thus, p53 loss leads to dysregulation of choline metabolism and LD growth and couples perturbed LD homeostasis to tumorigenesis.
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Affiliation(s)
- Xiuduan Xu
- State Key Laboratory of Molecular Oncology, School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
- School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Jianqin Wang
- School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Li Xu
- School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
| | - Peng Li
- School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
- Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou, China
| | - Peng Jiang
- State Key Laboratory of Molecular Oncology, School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
- School of Life Sciences, Tsinghua University, and Tsinghua-Peking Center for Life Sciences, Beijing, China
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11
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Nazeer B, Khawar MB, Khalid MU, Hamid SE, Rafiq M, Abbasi MH, Sheikh N, Ali A, Fatima H, Ahmad S. Emerging role of lipophagy in liver disorders. Mol Cell Biochem 2024; 479:1-11. [PMID: 36943663 DOI: 10.1007/s11010-023-04707-1] [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: 02/13/2022] [Accepted: 03/10/2023] [Indexed: 03/23/2023]
Abstract
Lipophagy is a selective degradation of lipids by a lysosomal-mediated pathway, and dysregulation of lipophagy is linked with the pathological hallmark of many liver diseases. Downregulation of lipophagy in liver cells results in abnormal accumulation of LDs (Lipid droplets) in hepatocytes which is a characteristic feature of several liver pathologies such as nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH). Contrarily, upregulation of lipophagy in activated hepatic stellate cells (HSCs) is associated with hepatic fibrosis and cirrhosis. Lipid metabolism reprogramming in violent cancer cells contributes to the progression of liver cancer. In this review, we have summarized the recent studies focusing on various components of the lipophagic machinery that can be modulated for their potential role as therapeutic agents against a wide range of liver diseases.
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Affiliation(s)
- Bismillah Nazeer
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Babar Khawar
- Applied Molecular Biology and Biomedicine Lab, Department of Zoology, University of Narowal, Narowal, Pakistan.
| | - Muhammad Usman Khalid
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Syeda Eisha Hamid
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Mussarat Rafiq
- Cell and Molecular Biology Lab, Institute of Zoology, University of the Punjab, Lahore, Pakistan
| | | | - Nadeem Sheikh
- Cell and Molecular Biology Lab, Institute of Zoology, University of the Punjab, Lahore, Pakistan.
| | - Ahmad Ali
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Hooriya Fatima
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
| | - Sadia Ahmad
- Molecular Medicine and Cancer Therapeutics Lab, Department of Zoology, Faculty of Sciences, University of Central Punjab, Lahore, Pakistan
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12
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Pyambri M, Lacorte S, Jaumot J, Bedia C. Effects of Indoor Dust Exposure on Lung Cells: Association of Chemical Composition with Phenotypic and Lipid Changes in a 3D Lung Cancer Cell Model. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20532-20541. [PMID: 38035630 PMCID: PMC10720387 DOI: 10.1021/acs.est.3c07573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 12/02/2023]
Abstract
Indoor dust is a key contributor to the global human exposome in urban areas since the population develops most of its activities in private and public buildings. To gain insight into the health risks associated with this chronic exposure, it is necessary to characterize the chemical composition of dust and understand its biological impacts using reliable physiological models. The present study investigated the biological effects of chemically characterized indoor dust extracts using three-dimensional (3D) lung cancer cell cultures combining phenotypic and lipidomic analyses. Apart from the assessment of cell viability, reactive oxygen species (ROS) induction, and interleukin-8 release, lipidomics was applied to capture the main lipid changes induced as a cellular response to the extracted dust compounds. The application of chemometric tools enabled the finding of associations between chemical compounds present in dust and lipidic and phenotypic profiles in the cells. This study contributes to a better understanding of the toxicity mechanisms associated with exposure to chemical pollutants present in indoor dust.
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Affiliation(s)
- Maryam Pyambri
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Sílvia Lacorte
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Joaquim Jaumot
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
| | - Carmen Bedia
- Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
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13
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Mari M, Voutyraki C, Zacharioudaki E, Delidakis C, Filippidis G. Lipid content evaluation of Drosophila tumour associated haemocytes through Third Harmonic Generation measurements. JOURNAL OF BIOPHOTONICS 2023; 16:e202300171. [PMID: 37643223 DOI: 10.1002/jbio.202300171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 08/01/2023] [Accepted: 08/22/2023] [Indexed: 08/31/2023]
Abstract
Non-linear microscopy is a powerful imaging tool to examine structural properties and subcellular processes of various biological samples. The competence of Third Harmonic Generation (THG) includes the label free imaging with diffraction-limited resolution and three-dimensional visualization with negligible phototoxicity effects. In this study, THG records and quantifies the lipid content of Drosophila haemocytes, upon encountering normal or tumorigenic neural cells, in correlation with their shape or their state. We show that the lipid accumulations of adult haemocytes are similar before and after encountering normal cells. In contrast, adult haemocytes prior to their interaction with cancer cells have a low lipid index, which increases while they are actively engaged in phagocytosis only to decrease again when haemocytes become exhausted. This dynamic change in the lipid accrual of haemocytes upon encountering tumour cells could potentially be a useful tool to assess the phagocytic capacity or activation state of tumour-associated haemocytes.
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Affiliation(s)
- Meropi Mari
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece
| | - Chrysanthi Voutyraki
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece
| | - Eva Zacharioudaki
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece
| | - Christos Delidakis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece
| | - George Filippidis
- Institute of Electronic Structure and Laser, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece
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14
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Tzirkel-Hancock N, Sharabi L, Argov-Argaman N. Milk fat globule size: Unraveling the intricate relationship between metabolism, homeostasis, and stress signaling. Biochimie 2023; 215:4-11. [PMID: 37802210 DOI: 10.1016/j.biochi.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/02/2023] [Accepted: 10/03/2023] [Indexed: 10/08/2023]
Abstract
Fat is an important component of milk which delivers energy, nutrients, and bioactive molecules from the lactating mother to the suckling neonate. Milk fat consists of a complex mixture of different types of lipids; hundreds of fatty acids, triglycerides, phospholipids, sphingolipids, cholesterol and cholesteryl ester, and glycoconjugates, secreted by the mammary gland epithelial cells (MEC) in the form of a lipid-protein assembly termed the milk fat globule (MFG). The mammary gland in general, and specifically that of modern dairy cows, faces metabolic stress once lactation commences, which changes the lipogenic capacity of MECs directly by reducing available energy and reducing factors required for both lipid synthesis and secretion or indirectly by activating a proinflammatory response. Both processes have the capacity to change the morphometric features (e.g., number and size) of the secreted MFG and its precursor-the intracellular lipid droplet (LD). The MFG size is tightly associated with its lipidome and proteome and also affects the bioavailability of milk fat and protein. Thus, MFG size has the potential to regulate the bioactivity of milk and dairy products. MFG size also plays a central role in the functional properties of milk and dairy products such as texture and stability. To understand how stress affects the structure-function of the MFG, we cover: (i) The mechanism of production and secretion of the MFG and the implications of MFG size, (ii) How the response mechanisms to stress can change the morphometric features of MFGs, and (iii) The possible consequences of such modifications.
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Affiliation(s)
- Noam Tzirkel-Hancock
- Department of Animal Science, The Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
| | - Lior Sharabi
- Department of Animal Science, The Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel
| | - Nurit Argov-Argaman
- Department of Animal Science, The Robert H Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Israel.
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15
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Biswas S, Baruah M, Shil A, Sarkar S, Ali M, Samanta A, Bhuniya S. Polarity-Driven Two-Photon Fluorescent Probe for Monitoring the Perturbation in Lipid Droplet Levels during Mitochondrial Dysfunction and Acute Pancreatitis. ACS Sens 2023; 8:3793-3803. [PMID: 37815484 DOI: 10.1021/acssensors.3c01245] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Lipid droplets (LDs) act as an energy reservoir in cancer cells; on the other hand, mitochondria are hyperactive to fulfill the energy demand to accelerate cell proliferation. We are interested in unfolding the relationship between the cellular energy reservoir and energy producer through fluorescence labeling. Thus, a dual organelle-targeted fluorescent probe MLD-1 has been rationally developed. It visualized the crosstalk between mitochondrial dysfunction and the fluctuation of LDs in live cells. Its two-photon ability allowed us to acquire deep tissue images. For the first time, we have shown that the probe has the ability to track the accumulation of LDs in different mouse organs during pancreatic inflammation. MLD-1, being a selectively polarity-driven, chemo- and photostable LD probe, may offer great possibilities for studying LD-associated biology in due course.
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Affiliation(s)
- Shayeri Biswas
- Centre for Interdisciplinary Sciences, JIS Institute of Advanced Studies and Research, JIS University, Arch Waterfront, GP Block, Sector V, Bidhannagar, Kolkata 700091, India
| | - Mousumi Baruah
- Molecular Sensors and Therapeutics Research Laboratory, Department of Chemistry, Shiv Nadar Institution of Eminence, Delhi NCR, NH 91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Anushree Shil
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 37673, Republic of Korea
| | - Sourav Sarkar
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, Gyungbuk 37673, Republic of Korea
| | - Mudassar Ali
- Molecular Sensors and Therapeutics Research Laboratory, Department of Chemistry, Shiv Nadar Institution of Eminence, Delhi NCR, NH 91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Animesh Samanta
- Molecular Sensors and Therapeutics Research Laboratory, Department of Chemistry, Shiv Nadar Institution of Eminence, Delhi NCR, NH 91, Tehsil Dadri, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Sankarprasad Bhuniya
- Centre for Interdisciplinary Sciences, JIS Institute of Advanced Studies and Research, JIS University, Arch Waterfront, GP Block, Sector V, Bidhannagar, Kolkata 700091, India
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16
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Jusović M, Starič P, Jarc Jovičić E, Petan T. The Combined Inhibition of Autophagy and Diacylglycerol Acyltransferase-Mediated Lipid Droplet Biogenesis Induces Cancer Cell Death during Acute Amino Acid Starvation. Cancers (Basel) 2023; 15:4857. [PMID: 37835551 PMCID: PMC10571868 DOI: 10.3390/cancers15194857] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/25/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
Lipid droplets (LDs) are dynamic organelles involved in the management of fatty acid trafficking and metabolism. Recent studies suggest that autophagy and LDs serve complementary roles in the protection against nutrient stress, but the autophagy-LD interplay in cancer cells is not well understood. Here, we examined the relationship between autophagy and LDs in starving HeLa cervical cancer- and MDA-MB-231 breast cancer cells. We found that acute amino acid depletion induces autophagy and promotes diacylglycerol acyltransferase 1 (DGAT1)-mediated LD accumulation in HeLa cells. Inhibition of autophagy via late-stage autophagy inhibitors, or by knocking down autophagy-related 5 (ATG5), reduced LD accumulation in amino acid-starved cancer cells, suggesting that autophagy contributes to LD biogenesis. On the contrary, knockdown of adipose triglyceride lipase (ATGL) increased LD accumulation, suggesting that LD breakdown is mediated by lipolysis under these conditions. Concurrent inhibition of autophagy by silencing ATG5 and of LD biogenesis using DGAT inhibitors was effective in killing starving HeLa cells, whereas cell survival was not compromised by suppression of ATGL-mediated lipolysis. Autophagy-dependent LD biogenesis was also observed in the aggressive triple-negative MDA-MB-231 breast cancer cells deprived of amino acids, but these cells were not sensitized to starvation by the combined inhibition of LD biogenesis and autophagy. These findings reveal that while targeting autophagy-driven and DGAT-mediated LD biogenesis reduces the resilience of HeLa cervical cancer cells to amino acid deprivation, this strategy may not be successful in other cancer cell types.
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Affiliation(s)
- Maida Jusović
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
- Jožef Stefan International Postgraduate School, SI-1000 Ljubljana, Slovenia
| | - Pia Starič
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
| | - Eva Jarc Jovičić
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
- Jožef Stefan International Postgraduate School, SI-1000 Ljubljana, Slovenia
| | - Toni Petan
- Department of Molecular and Biomedical Sciences, Jožef Stefan Institute, SI-1000 Ljubljana, Slovenia; (M.J.); (P.S.); (E.J.J.)
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17
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Povero D, Chen Y, Johnson SM, McMahon CE, Pan M, Bao H, Petterson XMT, Blake E, Lauer KP, O'Brien DR, Yu Y, Graham RP, Taner T, Han X, Razidlo GL, Liu J. HILPDA promotes NASH-driven HCC development by restraining intracellular fatty acid flux in hypoxia. J Hepatol 2023; 79:378-393. [PMID: 37061197 DOI: 10.1016/j.jhep.2023.03.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 02/23/2023] [Accepted: 03/26/2023] [Indexed: 04/17/2023]
Abstract
BACKGROUND & AIMS The prevalence of non-alcoholic steatohepatitis (NASH)-driven hepatocellular carcinoma (HCC) is rising rapidly, yet its underlying mechanisms remain unclear. Herein, we aim to determine the role of hypoxia-inducible lipid droplet associated protein (HILPDA)/hypoxia-inducible gene 2 (HIG2), a selective inhibitor of intracellular lipolysis, in NASH-driven HCC. METHODS The clinical significance of HILPDA was assessed in human NASH-driven HCC specimens by immunohistochemistry and transcriptomics analyses. The oncogenic effect of HILPDA was assessed in human HCC cells and in 3D epithelial spheroids upon exposure to free fatty acids and either normoxia or hypoxia. Lipidomics profiling of wild-type and HILPDA knockout HCC cells was assessed via shotgun and targeted approaches. Wild-type (Hilpdafl/fl) and hepatocyte-specific Hilpda knockout (HilpdaΔHep) mice were fed a Western diet and high sugar in drinking water while receiving carbon tetrachloride to induce NASH-driven HCC. RESULTS In patients with NASH-driven HCC, upregulated HILPDA expression is strongly associated with poor survival. In oxygen-deprived and lipid-loaded culture conditions, HILPDA promotes viability of human hepatoma cells and growth of 3D epithelial spheroids. Lack of HILPDA triggered flux of polyunsaturated fatty acids to membrane phospholipids and of saturated fatty acids to ceramide synthesis, exacerbating lipid peroxidation and apoptosis in hypoxia. The apoptosis induced by HILPDA deficiency was reversed by pharmacological inhibition of ceramide synthesis. In our experimental mouse model of NASH-driven HCC, HilpdaΔHep exhibited reduced hepatic steatosis and tumorigenesis but increased oxidative stress in the liver. Single-cell analysis supports a dual role of hepatic HILPDA in protecting HCC cells and facilitating the establishment of a pro-tumorigenic immune microenvironment in NASH. CONCLUSIONS Hepatic HILPDA is a pivotal oncometabolic factor in the NASH liver microenvironment and represents a potential novel therapeutic target. IMPACT AND IMPLICATIONS Non-alcoholic steatohepatitis (NASH, chronic metabolic liver disease caused by buildup of fat, inflammation and damage in the liver) is emerging as the leading risk factor and the fastest growing cause of hepatocellular carcinoma (HCC), the most common form of liver cancer. While curative therapeutic options exist for HCC, it frequently presents at a late stage when such options are no longer effective and only systemic therapies are available. However, systemic therapies are still associated with poor efficacy and some side effects. In addition, no approved drugs are available for NASH. Therefore, understanding the underlying metabolic alterations occurring during NASH-driven HCC is key to identifying new cancer treatments that target the unique metabolic needs of cancer cells.
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Affiliation(s)
- Davide Povero
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA; Department of Medicine, Division of Diabetes, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA.
| | - Yongbin Chen
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Scott M Johnson
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Cailin E McMahon
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Meixia Pan
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN 55905, USA
| | - Hanmei Bao
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN 55905, USA
| | - Xuan-Mai T Petterson
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, 4939 Charles Katz Drive, San Antonio, TX 78229, USA
| | - Emily Blake
- Metabolomics Core, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Kimberly P Lauer
- Metabolomics Core, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Daniel R O'Brien
- Metabolomics Core, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Yue Yu
- Metabolomics Core, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Rondell P Graham
- Department of Quantitative Health Sciences, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Timucin Taner
- Department of Laboratory Medicine and Pathology, Division of Anatomic Pathology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA
| | - Xianlin Han
- Department of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN 55905, USA; Departments of Surgery and Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Gina L Razidlo
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA; Department of Medicine, Division of Diabetes, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | - Jun Liu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, 200 First Street, Rochester, MN 55905, USA.
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18
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Lee S, Hwang N, Seok BG, Lee S, Lee SJ, Chung SW. Autophagy mediates an amplification loop during ferroptosis. Cell Death Dis 2023; 14:464. [PMID: 37491375 PMCID: PMC10368698 DOI: 10.1038/s41419-023-05978-8] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/09/2023] [Accepted: 07/11/2023] [Indexed: 07/27/2023]
Abstract
Ferroptosis, a programmed cell death, has been identified and associated with cancer and various other diseases. Ferroptosis is defined as a reactive oxygen species (ROS)-dependent cell death related to iron accumulation and lipid peroxidation, which is different from apoptosis, necrosis, autophagy, and other forms of cell death. However, accumulating evidence has revealed a link between autophagy and ferroptosis at the molecular level and has suggested that autophagy is involved in regulating the accumulation of iron-dependent lipid peroxidation and ROS during ferroptosis. Understanding the roles and pathophysiological processes of autophagy during ferroptosis may provide effective strategies for the treatment of ferroptosis-related diseases. In this review, we summarize the current knowledge regarding the regulatory mechanisms underlying ferroptosis, including iron and lipid metabolism, and its association with the autophagy pathway. In addition, we discuss the contribution of autophagy to ferroptosis and elucidate the role of autophagy as a ferroptosis enhancer during ROS-dependent ferroptosis.
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Affiliation(s)
- Seunghee Lee
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan, 44610, South Korea
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, VA Palo Alto Health Care System and Stanford University School of Medicine, Palo Alto, CA, 94305, USA
| | - Narae Hwang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, 02115, USA
| | - Byeong Geun Seok
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan, 44610, South Korea
| | - Sangguk Lee
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan, 44610, South Korea
| | - Seon-Jin Lee
- Environmental Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon, 34141, South Korea
| | - Su Wol Chung
- Department of Biological Sciences, College of Natural Sciences, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan, 44610, South Korea.
- Basic-Clinical Convergence Research Institute, University of Ulsan, Ulsan, 44610, South Korea.
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19
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Jin Y, Tan Y, Wu J, Ren Z. Lipid droplets: a cellular organelle vital in cancer cells. Cell Death Discov 2023; 9:254. [PMID: 37474495 PMCID: PMC10359296 DOI: 10.1038/s41420-023-01493-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/24/2023] [Accepted: 06/16/2023] [Indexed: 07/22/2023] Open
Abstract
Lipid droplets (LDs) are cellular organelles comprising a core of neutral lipids (glycerides, sterols) encased within a single phospholipid membrane, responsible for storing surplus lipids and furnishing cellular energy. LDs engage in lipid synthesis, catabolism, and transport processes by interacting with other organelles (e.g., endoplasmic reticulum, mitochondria), and they play critical roles in regulating cellular stress and immunity. Recent research has uncovered that an elevated number of LDs is a hallmark of cancer cells, attributable to their enhanced lipid uptake and synthesis capacity, with lipids stored as LDs. Depletion of LDs in cancer cells induces apoptosis, prompting the emergence of small molecule antitumor drugs targeting LDs or key factors (e.g., FASN, SCD1) within the lipid synthesis pathway. Advancements in LD isolation and artificial synthesis have demonstrated their potential applicability in antitumor research. LDs extracted from murine adipose tissue and incubated with lipophilic antitumor drugs yield drug-coated LDs, which promote apoptosis in cancer cells. Furthermore, LDs have been employed as biological lenses to augment the resolution of subcellular structures (microfilaments, microtubules), facilitating the observation of intricate structures within thicker cells, including cancer cells. This review delineates the functional and metabolic mechanisms of LDs in cancer cells and encapsulates recent progress in LD-centered antitumor research, offering novel insights for tumor diagnosis and treatment.
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Affiliation(s)
- Yi Jin
- Key Laboratory of Agriculture Animal Genetics, Breeding and Reproduction of the Ministry of Education & Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture and Rural Affairs, College of Animal Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, P. R. China
| | - Yanjie Tan
- Institute of Biomedical Sciences, Key Laboratory of Animal Resistance Biology of Shandong Province, College of Life Sciences, Shandong Normal University, Jinan, 250014, Shandong, P. R. China
| | - Jian Wu
- Key Laboratory of Agriculture Animal Genetics, Breeding and Reproduction of the Ministry of Education & Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture and Rural Affairs, College of Animal Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, P. R. China
| | - Zhuqing Ren
- Key Laboratory of Agriculture Animal Genetics, Breeding and Reproduction of the Ministry of Education & Key Laboratory of Swine Genetics and Breeding of the Ministry of Agriculture and Rural Affairs, College of Animal Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, P. R. China.
- Hubei Hongshan Laboratory, Wuhan, P. R. China.
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20
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Hammoudeh N, Soukkarieh C, Murphy DJ, Hanano A. Mammalian lipid droplets: structural, pathological, immunological and anti-toxicological roles. Prog Lipid Res 2023; 91:101233. [PMID: 37156444 DOI: 10.1016/j.plipres.2023.101233] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 04/30/2023] [Accepted: 05/05/2023] [Indexed: 05/10/2023]
Abstract
Mammalian lipid droplets (LDs) are specialized cytosolic organelles consisting of a neutral lipid core surrounded by a membrane made up of a phospholipid monolayer and a specific population of proteins that varies according to the location and function of each LD. Over the past decade, there have been significant advances in the understanding of LD biogenesis and functions. LDs are now recognized as dynamic organelles that participate in many aspects of cellular homeostasis plus other vital functions. LD biogenesis is a complex, highly-regulated process with assembly occurring on the endoplasmic reticulum although aspects of the underpinning molecular mechanisms remain elusive. For example, it is unclear how many enzymes participate in the biosynthesis of the neutral lipid components of LDs and how this process is coordinated in response to different metabolic cues to promote or suppress LD formation and turnover. In addition to enzymes involved in the biosynthesis of neutral lipids, various scaffolding proteins play roles in coordinating LD formation. Despite their lack of ultrastructural diversity, LDs in different mammalian cell types are involved in a wide range of biological functions. These include roles in membrane homeostasis, regulation of hypoxia, neoplastic inflammatory responses, cellular oxidative status, lipid peroxidation, and protection against potentially toxic intracellular fatty acids and lipophilic xenobiotics. Herein, the roles of mammalian LDs and their associated proteins are reviewed with a particular focus on their roles in pathological, immunological and anti-toxicological processes.
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Affiliation(s)
- Nour Hammoudeh
- Department of Animal Biology, Faculty of Sciences, University of Damascus, Damascus, Syria
| | - Chadi Soukkarieh
- Department of Animal Biology, Faculty of Sciences, University of Damascus, Damascus, Syria
| | - Denis J Murphy
- School of Applied Sciences, University of South Wales, Pontypridd, CF37 1DL, Wales, United Kingdom..
| | - Abdulsamie Hanano
- Department of Molecular Biology and Biotechnology, Atomic Energy Commission of Syria (AECS), P.O. Box 6091, Damascus, Syria..
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21
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Fernandez-Checa JC, Torres S, Garcia-Ruiz C. Hilpda, A New Player In Nash-Driven Hcc, Links Hypoxia Signaling With Ceramide Synthesis. J Hepatol 2023:S0168-8278(23)00337-9. [PMID: 37207912 DOI: 10.1016/j.jhep.2023.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 05/02/2023] [Indexed: 05/21/2023]
Affiliation(s)
- Jose C Fernandez-Checa
- Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, Barcelona, Spain; Liver Unit, Hospital Clinic I Provincial de Barcelona, Barcelona, Spain; Instituto de Investigaciones Biomédicas August Pi I Sunyer (IDIBAPS), Barcelona; CIBEREHD, Madrid, Spain; Department of Medicine, Keck School of Division of Gastrointestinal and Liver Disease,Medicine, University of Southern California, Los Angeles, CA, United States.
| | - Sandra Torres
- Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, Barcelona, Spain; Instituto de Investigaciones Biomédicas August Pi I Sunyer (IDIBAPS), Barcelona; CIBEREHD, Madrid, Spain
| | - Carmen Garcia-Ruiz
- Department of Cell Death and Proliferation, Institute of Biomedical Research of Barcelona (IIBB), CSIC, Barcelona, Spain; Liver Unit, Hospital Clinic I Provincial de Barcelona, Barcelona, Spain; Instituto de Investigaciones Biomédicas August Pi I Sunyer (IDIBAPS), Barcelona; CIBEREHD, Madrid, Spain; Department of Medicine, Keck School of Division of Gastrointestinal and Liver Disease,Medicine, University of Southern California, Los Angeles, CA, United States.
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22
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He J, Liu F, Zhang Z. Functions of N6-methyladenosine in cancer metabolism: from mechanism to targeted therapy. Biomark Res 2023; 11:40. [PMID: 37055798 PMCID: PMC10100159 DOI: 10.1186/s40364-023-00483-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 04/07/2023] [Indexed: 04/15/2023] Open
Abstract
N6-methyladenosine (m6A) is the most abundant modification of eukaryotic mRNA and is involved in almost every stage of RNA metabolism. The m6A modification on RNA has been demonstrated to be a regulator of the occurrence and development of a substantial number of diseases, especially cancers. Increasing evidence has shown that metabolic reprogramming is a hallmark of cancer and is crucial for maintaining the homeostasis of malignant tumors. Cancer cells rely on altered metabolic pathways to support their growth, proliferation, invasion and metastasis in an extreme microenvironment. m6A regulates metabolic pathways mainly by either directly acting on metabolic enzymes and transporters or indirectly influencing metabolism-related molecules. This review discusses the functions of the m6A modification on RNAs, its role in cancer cell metabolic pathways, the possible underlying mechanisms of its effects and the implication of this modification in cancer therapy.
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Affiliation(s)
- Jiayi He
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei, 430030, China
| | - Furong Liu
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei, 430030, China.
| | - Zhanguo Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Wuhan, Hubei, 430030, China.
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23
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Mangini M, Ferrara MA, Zito G, Managò S, Luini A, De Luca AC, Coppola G. Cancer metabolic features allow discrimination of tumor from white blood cells by label-free multimodal optical imaging. Front Bioeng Biotechnol 2023; 11:1057216. [PMID: 36815877 PMCID: PMC9928723 DOI: 10.3389/fbioe.2023.1057216] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/20/2023] [Indexed: 02/04/2023] Open
Abstract
Circulating tumor cells (CTCs) are tumor cells that have penetrated the circulatory system preserving tumor properties and heterogeneity. Detection and characterization of CTCs has high potential clinical values and many technologies have been developed for CTC identification. These approaches remain challenged by the extraordinary rarity of CTCs and the difficulty of efficiently distinguishing cancer from the much larger number of white blood cells in the bloodstream. Consequently, there is still a need for efficient and rapid methods to capture the broad spectrum of tumor cells circulating in the blood. Herein, we exploit the peculiarities of cancer metabolism for discriminating cancer from WBCs. Using deuterated glucose and Raman microscopy we show that a) the known ability of cancer cells to take up glucose at greatly increased rates compared to non-cancer cells results in the lipid generation and accumulation into lipid droplets and, b) by contrast, leukocytes do not appear to generate visible LDs. The difference in LD abundance is such that it provides a reliable parameter for distinguishing cancer from blood cells. For LD sensitive detections in a cell at rates suitable for screening purposes, we test a polarization-sensitive digital holographic imaging (PSDHI) technique that detects the birefringent properties of the LDs. By using polarization-sensitive digital holographic imaging, cancer cells (prostate cancer, PC3 and hepatocarcinoma cells, HepG2) can be rapidly discriminated from leukocytes with reliability close to 100%. The combined Raman and PSDHI microscopy platform lays the foundations for the future development of a new label-free, simple and universally applicable cancer cells' isolation method.
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Affiliation(s)
- Maria Mangini
- Laboratory of Biophotonics and Advanced Microscopy, Institute of Experimental Endocrinology and Oncology “G. Salvatore”, Second Unit, National Research Council, Naples, Italy
| | - Maria Antonietta Ferrara
- Laboratory of Optics and Photonics, Institute of Applied Sciences and Intelligent Systems, Unit of Naples, National Research Council, Naples, Italy
| | - Gianluigi Zito
- Laboratory of Optics and Photonics, Institute of Applied Sciences and Intelligent Systems, Unit of Naples, National Research Council, Naples, Italy
| | - Stefano Managò
- Laboratory of Biophotonics and Advanced Microscopy, Institute of Experimental Endocrinology and Oncology “G. Salvatore”, Second Unit, National Research Council, Naples, Italy
| | - Alberto Luini
- Laboratory of Biophotonics and Advanced Microscopy, Institute of Experimental Endocrinology and Oncology “G. Salvatore”, Second Unit, National Research Council, Naples, Italy,*Correspondence: Alberto Luini, ; Anna Chiara De Luca, ; Giuseppe Coppola,
| | - Anna Chiara De Luca
- Laboratory of Biophotonics and Advanced Microscopy, Institute of Experimental Endocrinology and Oncology “G. Salvatore”, Second Unit, National Research Council, Naples, Italy,*Correspondence: Alberto Luini, ; Anna Chiara De Luca, ; Giuseppe Coppola,
| | - Giuseppe Coppola
- Laboratory of Optics and Photonics, Institute of Applied Sciences and Intelligent Systems, Unit of Naples, National Research Council, Naples, Italy,*Correspondence: Alberto Luini, ; Anna Chiara De Luca, ; Giuseppe Coppola,
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24
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Liu M, Fang X, Wang H, Ji R, Guo Q, Chen Z, Ren Q, Wang Y, Zhou Y. Characterization of lipid droplet metabolism patterns identified prognosis and tumor microenvironment infiltration in gastric cancer. Front Oncol 2023; 12:1038932. [PMID: 36713557 PMCID: PMC9875057 DOI: 10.3389/fonc.2022.1038932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 12/20/2022] [Indexed: 01/13/2023] Open
Abstract
Background Gastric cancer is one of the common malignant tumors of the digestive system worldwide, posing a serious threat to human health. A growing number of studies have demonstrated the important role that lipid droplets play in promoting cancer progression. However, few studies have systematically evaluated the role of lipid droplet metabolism-related genes (LDMRGs) in patients with gastric cancer. Methods We identified two distinct molecular subtypes in the TCGA-STAD cohort based on LDMRGs expression. We then constructed risk prediction scoring models in the TCGA-STAD cohort by lasso regression analysis and validated the model with the GSE15459 and GSE66229 cohorts. Moreover, we constructed a nomogram prediction model by cox regression analysis and evaluated the predictive efficacy of the model by various methods in STAD. Finally, we identified the key gene in LDMRGs, ABCA1, and performed a systematic multi-omics analysis in gastric cancer. Results Two molecular subtypes were identified based on LDMRGs expression with different survival prognosis and immune infiltration levels. lasso regression models were effective in predicting overall survival (OS) of gastric cancer patients at 1, 3 and 5 years and were validated in the GEO database with consistent results. The nomogram prediction model incorporated additional clinical factors and prognostic molecules to improve the prognostic predictive value of the current TNM staging system. ABCA1 was identified as a key gene in LDMRGs and multi-omics analysis showed a strong correlation between ABCA1 and the prognosis and immune status of patients with gastric cancer. Conclusion This study reveals the characteristics and possible underlying mechanisms of LDMRGs in gastric cancer, contributing to the identification of new prognostic biomarkers and providing a basis for future research.
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Affiliation(s)
- Mengxiao Liu
- The First Clinical Medical College, Lanzhou University, Lanzhou, China,Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xidong Fang
- The First Clinical Medical College, Lanzhou University, Lanzhou, China,Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China
| | - Haoying Wang
- Department of Gastroenterology, Tangdu Hospital, Fourth Military Medical University, Xinan, China
| | - Rui Ji
- Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China
| | - Qinghong Guo
- Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zhaofeng Chen
- Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China
| | - Qian Ren
- Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China
| | - Yuping Wang
- Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China,*Correspondence: Yongning Zhou, ; Yuping Wang,
| | - Yongning Zhou
- Department of Gastroenterology, the First Hospital of Lanzhou University, Lanzhou, China,Key Laboratory for Gastrointestinal Diseases of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, China,*Correspondence: Yongning Zhou, ; Yuping Wang,
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25
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Rossi T, Zamponi R, Chirico M, Pisanu ME, Iorio E, Torricelli F, Gugnoni M, Ciarrocchi A, Pistoni M. BETi enhance ATGL expression and its lipase activity to exert their antitumoral effects in triple-negative breast cancer (TNBC) cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2023; 42:7. [PMID: 36604676 PMCID: PMC9817244 DOI: 10.1186/s13046-022-02571-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 12/14/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND Triple-Negative Breast Cancer (TNBC) is a subtype of breast cancer that differs from other types of breast cancers in the faster spread and worse outcome. TNBC presented limited treatment options. BET (Bromodomain and extra-terminal domain) proteins are epigenetic readers that control the expression of different oncogenic proteins, and their inhibition (BETi) is considered a promising anti-cancer strategy. Recent evidence demonstrated the involvement of BET proteins in regulation of metabolic processes. METHODS MDA-MB231 cells treated with JQ1 followed by RNA-sequencing analysis showed altered expression of lipid metabolic genes; among these, we focused on ATGL, a lipase required for efficient mobilization of triglyceride. Different in vitro approaches were performed to validate the RNA-sequencing data (qRT-PCR, immunofluorescence and flow cytometry). NMR (Nuclear Magnetic Resonance) was used to analyze the lipid reprogramming upon treatment. ATGL expression was determined by immunoblot and qRT-PCR, and the impact of ATGL function or protein knockdown, alone and in combination with BETi, was assessed by analyzing cell proliferation, mitochondrial function, and metabolic activity in TNBC and non-TNBC cells culture models. RESULTS TNBC cells treated with two BETi markedly increased ATGL expression and lipolytic function and decreased intracellular lipid content in a dose and time-dependent manner. The intracellular composition of fatty acids (FAs) after BETi treatment reflected a significant reduction in neutral lipids. The short-chain FA propionate entered directly into the mitochondria mimicking ATGL activity. ATGL KD (knockdown) modulated the levels of SOD1 and CPT1a decreasing ROS and helped to downregulate the expression of mitochondrial ß-oxidation genes in favor of the upregulation of glycolytic markers. The enhanced glycolysis is reflected by the increased of the mitochondrial activity (MTT assay). Finally, we found that after BETi treatment, the FoxO1 protein is upregulated and binds to the PNPLA2 promoter leading to the induction of ATGL. However, FoxO1 only partially prompted the induction of ATGL expression by BETi. CONCLUSIONS The anti-proliferative effect achieved by BETi is helped by ATGL mediating lipolysis. This study showed that BETi altered the mitochondrial dynamics taking advantage of ATGL function to induce cell cycle arrest and cell death. Schematic representation of BETi mechanism of action on ATGL in TNBC cells. BETi induce the expression of FoxO1 and ATGL, lowering the expression of G0G2, leading to a switch in metabolic status. The induced expression of ATGL leads to increased lipolysis and a decrease in lipid droplet content and bioavailability of neutral lipid. At the same time, the mitochondria are enriched with fatty acids. This cellular status inhibits cell proliferation and increases ROS production and mitochondrial stress. Interfering for ATGL expression, the oxidative phenotypic status mildly reverted to a glycolytic status where neutral lipids are stored into lipid droplets with a consequent reduction of oxidative stress in the mitochondrial.
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Affiliation(s)
- Teresa Rossi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia, RE Italy
| | - Raffaella Zamponi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia, RE Italy
| | - Mattea Chirico
- grid.416651.10000 0000 9120 6856High Resolution NMR Unit, Core Facilities, Istituto Superiore Di Sanità, 00161 Rome, Italy
| | - Maria Elena Pisanu
- grid.416651.10000 0000 9120 6856High Resolution NMR Unit, Core Facilities, Istituto Superiore Di Sanità, 00161 Rome, Italy
| | - Egidio Iorio
- grid.416651.10000 0000 9120 6856High Resolution NMR Unit, Core Facilities, Istituto Superiore Di Sanità, 00161 Rome, Italy
| | - Federica Torricelli
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia, RE Italy
| | - Mila Gugnoni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia, RE Italy
| | - Alessia Ciarrocchi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia, RE Italy
| | - Mariaelena Pistoni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, 42123 Reggio Emilia, RE Italy
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26
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An imidazole-derived polarity sensitive probe for lipid droplet target and in vivo tumor imaging. Talanta 2023; 252:123903. [DOI: 10.1016/j.talanta.2022.123903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/16/2022] [Accepted: 08/27/2022] [Indexed: 11/24/2022]
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27
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Gasparian A, Aksenova M, Oliver D, Levina E, Doran R, Lucius M, Piroli G, Oleinik N, Ogretmen B, Mythreye K, Frizzell N, Broude E, Wyatt MD, Shtutman M. Depletion of COPI in cancer cells: the role of reactive oxygen species in the induction of lipid accumulation, noncanonical lipophagy and apoptosis. Mol Biol Cell 2022; 33:ar135. [PMID: 36222847 PMCID: PMC9727790 DOI: 10.1091/mbc.e21-08-0420] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The coatomer protein complex 1 (COPI) is a multisubunit complex that coats intracellular vesicles and is involved in intracellular protein trafficking. Recently we and others found that depletion of COPI complex subunits zeta (COPZ1) and delta (ARCN1) preferentially kills tumor cells relative to normal cells. Here we delineate the specific cellular effects and sequence of events of COPI complex depletion in tumor cells. We find that this depletion leads to the inhibition of mitochondrial oxidative phosphorylation and the elevation of reactive oxygen species (ROS) production, followed by accumulation of lipid droplets (LDs) and autophagy-associated proteins LC3-II and SQSTM1/p62 and, finally, apoptosis of the tumor cells. Inactivation of ROS in COPI-depleted cells with the mitochondrial-specific quencher, mitoquinone mesylate, attenuated apoptosis and markedly decreased both the size and the number of LDs. COPI depletion caused ROS-dependent accumulation of LC3-II and SQSTM1 which colocalizes with LDs. Lack of double-membrane autophagosomes and insensitivity to Atg5 deletion suggested an accumulation of a microlipophagy complex on the surface of LDs induced by depletion of the COPI complex. Our findings suggest a sequence of cellular events triggered by COPI depletion, starting with inhibition of oxidative phosphorylation, followed by ROS activation and accumulation of LDs and apoptosis.
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Affiliation(s)
- A. Gasparian
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - M. Aksenova
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - D. Oliver
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - E. Levina
- Department of Biological Sciences College of Art and Science, University of South Carolina, Columbia, SC 29208
| | - R. Doran
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - M. Lucius
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - G. Piroli
- Department of Pharmacology, Physiology & Neuroscience, School of Medicine, University of South Carolina, Columbia, SC 29208
| | - N. Oleinik
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425
| | - B. Ogretmen
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425
| | - K. Mythreye
- Department of Pathology, Division of Molecular and Cellular Pathology, University of Alabama at Birmingham, Birmingham, AL 35233
| | - N. Frizzell
- Department of Pharmacology, Physiology & Neuroscience, School of Medicine, University of South Carolina, Columbia, SC 29208
| | - E. Broude
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - M. D. Wyatt
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208
| | - M. Shtutman
- Department of Drug Discovery and Biomedical Sciences, College of Pharmacy, University of South Carolina, Columbia, SC 29208,*Address correspondence to: M. Shtutman ()
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Quantitative Phase Imaging Detecting the Hypoxia-Induced Patterns in Healthy and Neoplastic Human Colonic Epithelial Cells. Cells 2022; 11:cells11223599. [PMID: 36429026 PMCID: PMC9688862 DOI: 10.3390/cells11223599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
Hypoxia is a frequent phenomenon during carcinogenesis and may lead to functional and structural changes in proliferating cancer cells. Colorectal cancer (CRC) is one of the most common neoplasms in which hypoxia is associated with progression. The aim of this study was to assess the optical parameters and microanatomy of CRC and the normal intestinal epithelium cells using the digital holotomography (DHT) method. The examination was conducted on cancer (HT-29, LoVo) and normal colonic cells (CCD-18Co) cultured in normoxic and hypoxic environments. The assessment included optical parameters such as the refractive index (RI) and dry mass as well as the morphological features. Hypoxia decreased the RI in all cells as well as in their cytoplasm, nucleus, and nucleoli. The opposite tendency was noted for spheroid-vesicular structures, where the RI was higher for the hypoxic state. The total volume of hypoxic CCD-18Co and LoVo cells was decreased, while an increase in this parameter was observed for HT-29 cells. Hypoxia increased the radius and cell volume, including the dry mass of the vesicular content. The changes in the optics and morphology of hypoxic cells may suggest the possibility of using DHT in the detection of circulating tumor cells (CTCs).
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Lipid Droplets in Lung Cancers Are Crucial for the Cell Growth and Starvation Survival. Int J Mol Sci 2022; 23:ijms232012533. [PMID: 36293388 PMCID: PMC9604479 DOI: 10.3390/ijms232012533] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 01/17/2023] Open
Abstract
For rapid and unlimited cell growth and proliferation, cancer cells require large quantities of nutrients. Many metabolic pathways and nutrient uptake systems are frequently reprogrammed and upregulated to meet the demand from cancer cells, including the demand for lipids. The lipids for most adult normal cells are mainly acquired from the circulatory system. Whether different cancer cells adopt identical mechanisms to ensure sufficient lipid supply, and whether the lipid demand and supply meet each other, remains unclear, and was investigated in lung cancer cells. Results showed that, despite frequent upregulation in de novo lipogenesis and the lipid transporter system, different lung cancer cells adopt different proteins to acquire sufficient lipids, and the lipid supply frequently exceeds the demand, as significant amounts of lipids stored in the lipid droplets could be found within lung cancer cells. Lipid droplet surface protein, PLIN3, was found frequently overexpressed since the early stage in lung cancer tissues. Although the expression is not significantly associated with a specific gender, age, histology type, disease stage, and smoking habit, the frequently elevated expression of PLIN3 protein indicates the importance of lipid droplets for lung cancer. These lipid droplets are not only for nutrient storage, but are also crucial for tumor growth and proliferation, as well as survival in starvation. These results suggest that manipulation of lipid droplet formation or TG storage in lung cancer cells could potentially decrease the progression of lung cancer. Further exploration of lipid biology in lung cancer could help design novel treatment strategies.
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Armbruster J, Aboouf MA, Gassmann M, Egert A, Schorle H, Hornung V, Schmidt T, Schmid-Burgk JL, Kristiansen G, Bicker A, Hankeln T, Zhu H, Gorr TA. Myoglobin regulates fatty acid trafficking and lipid metabolism in mammary epithelial cells. PLoS One 2022; 17:e0275725. [PMID: 36223378 PMCID: PMC9555620 DOI: 10.1371/journal.pone.0275725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/21/2022] [Indexed: 11/18/2022] Open
Abstract
Myoglobin (MB) is known to bind and deliver oxygen in striated muscles at high expression levels. MB is also expressed at much reduced levels in mammary epithelial cells, where the protein´s function is unclear. In this study, we aim to determine whether MB impacts fatty acid trafficking and facilitates aerobic fatty acid ß-oxidation in mammary epithelial cells. We utilized MB-wildtype versus MB-knockout mice and human breast cancer cells to examine the impact of MB and its oxygenation status on fatty acid metabolism in mouse milk and mammary epithelia. MB deficient cells were generated through CRISPR/Cas9 and TALEN approaches and exposed to various oxygen tensions. Fatty acid profiling of milk and cell extracts were performed along with cell labelling and immunocytochemistry. Our findings show that MB expression in mammary epithelial cells promoted fatty acid oxidation while reducing stearyl-CoA desaturase activity for lipogenesis. In cells and milk product, presence of oxygenated MB significantly elevated indices of limited fatty acid ß-oxidation, i.e., the organelle-bound removal of a C2 moiety from long-chain saturated or monounsaturated fatty acids, thus shifting the composition toward more saturated and shorter fatty acid species. Presence of the globin also increased cytoplasmic fatty acid solubility under normoxia and fatty acid deposition to lipid droplets under severe hypoxia. We conclude that MB can function in mammary epithelia as intracellular O2-dependent shuttle of oxidizable fatty acid substrates. MB's impact on limited oxidation of fatty acids could generate inflammatory mediator lipokines, such as 7-hexadecenoate. Thus, the novel functions of MB in breast epithelia described herein range from controlling fatty acid turnover and homeostasis to influencing inflammatory signalling cascade. Future work is needed to analyse to what extent these novel roles of MB also apply to myocytic cell physiology and malignant cell behaviour, respectively.
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Affiliation(s)
- Julia Armbruster
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Mostafa A. Aboouf
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
- Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Max Gassmann
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Zurich Center for Integrative Human Physiology, University of Zurich, Zurich, Switzerland
| | - Angela Egert
- Institute of Pathology, Department of Developmental Pathology, University Hospital Bonn, Bonn, Germany
| | - Hubert Schorle
- Institute of Pathology, Department of Developmental Pathology, University Hospital Bonn, Bonn, Germany
| | - Veit Hornung
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Tobias Schmidt
- Institute of Clinical Chemistry and Clinical Pharmacology, University and University Hospital Bonn, Bonn, Germany
| | - Jonathan L. Schmid-Burgk
- Roche Pharmaceutical Research and Early Development, Roche Innovation Center Zurich, Schlieren, Switzerland
| | | | - Anne Bicker
- Institute of Organismic and Molecular Evolution, Molecular and Genome Analysis, Johannes Gutenberg University, Mainz, Germany
| | - Thomas Hankeln
- Institute of Organismic and Molecular Evolution, Molecular and Genome Analysis, Johannes Gutenberg University, Mainz, Germany
| | - Hao Zhu
- Department of Clinical Laboratory Sciences, University of Kansas Medical Center, Kansas City, Kansas, United States of America
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, Kansas, United States of America
| | - Thomas A. Gorr
- Institute of Veterinary Physiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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Singh J, Sanghavi P, Mallik R. Microtubule motor driven interactions of lipid droplets: Specificities and opportunities. Front Cell Dev Biol 2022; 10:893375. [PMID: 36200039 PMCID: PMC9527339 DOI: 10.3389/fcell.2022.893375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 09/05/2022] [Indexed: 11/29/2022] Open
Abstract
Lipid Droplets (LDs) are evolutionarily conserved cellular organelles that store neutral lipids such as triacylglycerol and cholesterol-esters. Neutral lipids are enclosed within the limiting membrane of the LD, which is a monolayer of phospholipids and is therefore fundamentally different from the bilayer membrane enclosing most other organelles. LDs have long been viewed as a storehouse of lipids needed on demand for generating energy and membranes inside cells. Outside this classical view, we are now realizing that LDs have significant roles in protein sequestration, supply of signalling lipids, viral replication, lipoprotein production and many other functions of important physiological consequence. To execute such functions, LDs must often exchange lipids and proteins with other organelles (e.g., the ER, lysosomes, mitochondria) via physical contacts. But before such exchanges can occur, how does a micron-sized LD with limited ability to diffuse around find its cognate organelle? There is growing evidence that motor protein driven motion of LDs along microtubules may facilitate such LD-organelle interactions. We will summarize some aspects of LD motion leading to LD-organelle contacts, how these change with metabolic state and pathogen infections, and also ask how these pathways could perhaps be targeted selectively in the context of disease and drug delivery. Such a possibility arises because the binding of motor proteins to the monolayer membrane on LDs could be different from motor binding to the membrane on other cellular organelles.
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Affiliation(s)
- Jagjeet Singh
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
- *Correspondence: Roop Mallik, ; Jagjeet Singh,
| | - Paulomi Sanghavi
- Department of Biological Sciences, Tata Institute of Fundamental Research, Mumbai, India
| | - Roop Mallik
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, India
- *Correspondence: Roop Mallik, ; Jagjeet Singh,
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Fatty acid metabolism in aggressive B-cell lymphoma is inhibited by tetraspanin CD37. Nat Commun 2022; 13:5371. [PMID: 36100608 PMCID: PMC9470561 DOI: 10.1038/s41467-022-33138-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/30/2022] [Indexed: 11/09/2022] Open
Abstract
The importance of fatty acid (FA) metabolism in cancer is well-established, yet the mechanisms underlying metabolic reprogramming remain elusive. Here, we identify tetraspanin CD37, a prognostic marker for aggressive B-cell lymphoma, as essential membrane-localized inhibitor of FA metabolism. Deletion of CD37 on lymphoma cells results in increased FA oxidation shown by functional assays and metabolomics. Furthermore, CD37-negative lymphomas selectively deplete palmitate from serum in mouse studies. Mechanistically, CD37 inhibits the FA transporter FATP1 through molecular interaction. Consequently, deletion of CD37 induces uptake and processing of exogenous palmitate into energy and essential building blocks for proliferation, and inhibition of FATP1 reverses this phenotype. Large lipid deposits and intracellular lipid droplets are observed in CD37-negative lymphoma tissues of patients. Moreover, inhibition of carnitine palmitoyl transferase 1 A significantly compromises viability and proliferation of CD37-deficient lymphomas. Collectively, our results identify CD37 as a direct gatekeeper of the FA metabolic switch in aggressive B-cell lymphoma. Tetraspanin CD37 deficiency has been reported as a prognostic marker for aggressive B-cell lymphoma. Here, the authors show that CD37 interacts with the fatty acid transporter 1 to inhibit palmitate uptake and its deficiency leads to increased fatty acid metabolism which promotes tumorigenesis in B-cell lymphoma.
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33
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Chen Y, Yuan H, Yu Q, Pang J, Sheng M, Tang W. Bioinformatics Analysis and Structure of Gastric Cancer Prognosis Model Based on Lipid Metabolism and Immune Microenvironment. Genes (Basel) 2022; 13:genes13091581. [PMID: 36140749 PMCID: PMC9498347 DOI: 10.3390/genes13091581] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/28/2022] [Accepted: 08/31/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES The reprogramming of lipid metabolism is a new trait of cancers. However, the role of lipid metabolism in the tumor immune microenvironment (TIME) and the prognosis of gastric cancer remains unclear. METHODS Consensus clustering was applied to identify novel subgroups. ESTIMATE, TIMER, and MCPcounter algorithms were used to determine the TIME of the subgroups. The underlying mechanisms were elucidated using functional analysis. The prognostic model was established using the LASSO algorithm and multivariate Cox regression analysis. RESULTS Three molecular subgroups with significantly different survival were identified. The subgroup with relatively low lipid metabolic expression had a lower immune score and immune cells. The differentially expressed genes (DEGs) were concentrated in immune biological processes and cell migration via GO and KEGG analyses. GSEA analysis showed that the subgroups were mainly enriched in arachidonic acid metabolism. Gastric cancer survival can be predicted using risk models based on lipid metabolism genes. CONCLUSIONS The TIME of gastric cancer patients is related to the expression of lipid metabolism genes and could be used to predict cancer prognosis accurately.
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Sassano ML, Felipe-Abrio B, Agostinis P. ER-mitochondria contact sites; a multifaceted factory for Ca2+ signaling and lipid transport. Front Cell Dev Biol 2022; 10:988014. [PMID: 36158205 PMCID: PMC9494157 DOI: 10.3389/fcell.2022.988014] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 07/22/2022] [Indexed: 11/13/2022] Open
Abstract
Membrane contact sites (MCS) between organelles of eukaryotic cells provide structural integrity and promote organelle homeostasis by facilitating intracellular signaling, exchange of ions, metabolites and lipids and membrane dynamics. Cataloguing MCS revolutionized our understanding of the structural organization of a eukaryotic cell, but the functional role of MSCs and their role in complex diseases, such as cancer, are only gradually emerging. In particular, the endoplasmic reticulum (ER)-mitochondria contacts (EMCS) are key effectors of non-vesicular lipid trafficking, thereby regulating the lipid composition of cellular membranes and organelles, their physiological functions and lipid-mediated signaling pathways both in physiological and diseased conditions. In this short review, we discuss key aspects of the functional complexity of EMCS in mammalian cells, with particular emphasis on their role as central hubs for lipid transport between these organelles and how perturbations of these pathways may favor key traits of cancer cells.
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Affiliation(s)
- Maria Livia Sassano
- Cell Death Research and Therapy Group, Department of Cellular and Molecular Medicine, Leuven, Belgium
- VIB Center for Cancer Biology, Leuven, Belgium
| | - Blanca Felipe-Abrio
- Cell Death Research and Therapy Group, Department of Cellular and Molecular Medicine, Leuven, Belgium
- VIB Center for Cancer Biology, Leuven, Belgium
| | - Patrizia Agostinis
- Cell Death Research and Therapy Group, Department of Cellular and Molecular Medicine, Leuven, Belgium
- VIB Center for Cancer Biology, Leuven, Belgium
- *Correspondence: Patrizia Agostinis,
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35
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Koizume S, Takahashi T, Nakamura Y, Yoshihara M, Ota Y, Sato S, Tadokoro H, Yokose T, Kato H, Miyagi E, Miyagi Y. Lipophagy-ICAM-1 pathway associated with fatty acid and oxygen deficiencies is involved in poor prognoses of ovarian clear cell carcinoma. Br J Cancer 2022; 127:462-473. [PMID: 35449452 PMCID: PMC9346109 DOI: 10.1038/s41416-022-01808-4] [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: 09/15/2021] [Revised: 03/21/2022] [Accepted: 03/25/2022] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Serum starvation and hypoxia (SSH) mimics a stress condition in tumours. We have shown that intercellular adhesion molecule-1 (ICAM-1) protein is synergistically expressed in ovarian clear cell carcinoma (CCC) cells under SSH in response to an insufficient supply of fatty acids (FAs). This ICAM-1 expression is responsible for resistance against the lethal condition, thereby promoting tumour growth. However, the underlying mechanisms that link SSH-driven ICAM1 gene expression to impaired FA supply and its clinical relevance are unclear. METHODS The underlying mechanisms of how FA deficiency induces ICAM-1 expression in cooperation with hypoxia were analysed in vitro and in vivo. Clinical significance of CCC cell-derived ICAM-1 and the mechanism associated with the transcriptional synergism were also investigated. RESULTS ICAM-1 expression was mediated through lipophagy-driven lipid droplet degradation, followed by impaired FA-lipid droplet flow. Lipophagy induced ICAM1 expression through stabilisation of NFκB binding to the promoter region via Sam68 and hTERT. Analyses of clinical specimens revealed that expression of ICAM-1 and LC3B, an autophagy marker associated with lipophagy, significantly correlated with poor prognoses of CCC. CONCLUSIONS The lipophagy-ICAM-1 pathway induced under a tumour-like stress conditions contributes to CCC progression and is a potential therapeutic target for this aggressive cancer type.
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Affiliation(s)
- Shiro Koizume
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515, Japan. .,Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515, Japan.
| | - Tomoko Takahashi
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Yoshiyasu Nakamura
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Mitsuyo Yoshihara
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Yukihide Ota
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan ,grid.268441.d0000 0001 1033 6139Department of Obstetrics, Gynecology, and Molecular Reproductive Science, Yokohama City University, Graduate School of Medicine, Yokohama, 236-0004 Japan
| | - Shinya Sato
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan ,grid.414944.80000 0004 0629 2905Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515 Japan
| | - Hiroko Tadokoro
- grid.414944.80000 0004 0629 2905Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515 Japan
| | - Tomoyuki Yokose
- grid.414944.80000 0004 0629 2905Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515 Japan
| | - Hisamori Kato
- grid.414944.80000 0004 0629 2905Department of Gynecology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515 Japan
| | - Etsuko Miyagi
- grid.268441.d0000 0001 1033 6139Department of Obstetrics, Gynecology, and Molecular Reproductive Science, Yokohama City University, Graduate School of Medicine, Yokohama, 236-0004 Japan
| | - Yohei Miyagi
- Molecular Pathology and Genetics Division, Kanagawa Cancer Center Research Institute, Yokohama, 241-8515, Japan. .,Department of Pathology, Kanagawa Cancer Center Hospital, Yokohama, 241-8515, Japan.
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36
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Sun Y, Xue Z, Huang T, Che X, Wu G. Lipid metabolism in ferroptosis and ferroptosis-based cancer therapy. Front Oncol 2022; 12:941618. [PMID: 35978815 PMCID: PMC9376317 DOI: 10.3389/fonc.2022.941618] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/08/2022] [Indexed: 11/28/2022] Open
Abstract
Ferroptosis refers to iron-dependent, specialized, and regulated-necrosis mediated by lipid peroxidation, which is closely related to a variety of diseases, including cancer. Tumor cells undergo extensive changes in lipid metabolism, including lipid peroxidation and ferroptosis. Changes in lipid metabolism are critical for the regulation of ferroptosis and thus have important roles in cancer therapy. In this review, we introduce the characteristics of ferroptosis and briefly analyze the links between several metabolic mechanisms and ferroptosis. The effects of lipid peroxides, several signaling pathways, and the molecules and pathways involved in lipid metabolism on ferroptosis were extensively analyzed. Finally, our review highlights some ferroptosis-based treatments and presents some methods and examples of how these treatments can be combined with other treatments.
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Affiliation(s)
- Yonghao Sun
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zuoxing Xue
- Department of Urology, Dalian University Affiliated Xinhua Hospital, Dalian, China
| | - Tao Huang
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Guangzhen Wu, ; Xiangyu Che, ; Tao Huang,
| | - Xiangyu Che
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Guangzhen Wu, ; Xiangyu Che, ; Tao Huang,
| | - Guangzhen Wu
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Guangzhen Wu, ; Xiangyu Che, ; Tao Huang,
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37
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The role of liver kinase B1 in tumor progression through regulation of lipid metabolism. CLINICAL & TRANSLATIONAL ONCOLOGY : OFFICIAL PUBLICATION OF THE FEDERATION OF SPANISH ONCOLOGY SOCIETIES AND OF THE NATIONAL CANCER INSTITUTE OF MEXICO 2022; 24:2045-2054. [PMID: 35896782 PMCID: PMC9522762 DOI: 10.1007/s12094-022-02863-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/19/2022] [Indexed: 10/30/2022]
Abstract
The somatic mutation of liver kinase B1 (LKB1) has been implicated in various tumors, which is reflected in the survival, proliferation, and metastasis of tumor cells. However, the regulation of LKB1 in lipid metabolism, a process that is involved in tumor progression is not completely clear. We conclude that LKB1 deficiency results in abnormal expression and activation of multiple molecules related to lipid metabolism which locate downstream of AMP-activated protein kinase (AMPK) or salt-induced kinase (SIK). Abnormal lipid metabolism induced by LKB1 deficiency contributes to the proliferation and metastasis of tumor cells through energy regulation.
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38
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Leitner N, Hlavatý J, Ertl R, Gabner S, Fuchs-Baumgartinger A, Walter I. Lipid droplets and perilipins in canine osteosarcoma. Investigations on tumor tissue, 2D and 3D cell culture models. Vet Res Commun 2022; 46:1175-1193. [PMID: 35834072 DOI: 10.1007/s11259-022-09975-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 07/08/2022] [Indexed: 10/17/2022]
Abstract
Lipid droplets were identified as important players in biological processes of various tumor types. With emphasis on lipid droplet-coating proteins (perilipins, PLINs), this study intended to shed light on the presence and formation of lipid droplets in canine osteosarcoma. For this purpose, canine osteosarcoma tissue samples (n = 11) were analyzed via immunohistochemistry and electron microscopy for lipid droplets and lipid droplet-coating proteins (PLINs). Additionally, we used the canine osteosarcoma cell lines D-17 and COS4288 in 2D monolayer and 3D spheroid (cultivated for 7, 14, and 21 days) in vitro models, and further analyzed the samples by means of histochemistry, immunofluorescence, molecular biological techniques (RT-qPCR, Western Blot) and electron microscopical imaging. Lipid droplets, PLIN2, and PLIN3 were detected in osteosarcoma tissue samples as well as in 2D and 3D cultivated D-17 and COS4288 cells. In spheroids, specific distribution patterns of lipid droplets and perilipins were identified, taking into consideration cell line specific zonal apportionment. Upon external lipid supplementation (oleic acid), a rise of lipid droplet amount accompanied with an increase of PLIN2 expression was observed. Detailed electron microscopical analyzes revealed that lipid droplet sizes in tumor tissue were comparable to that of 3D spheroid models. Moreover, the biggest lipid droplets were found in the central zone of the spheroids at all sampling time-points, reaching their maximum size at 21 days. Thus, the 3D spheroids can be considered as a relevant in vitro model for further studies focusing on lipid droplets biology and function in osteosarcoma.
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Affiliation(s)
- N Leitner
- Institute of Morphology, Working Group Histology, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria
| | - J Hlavatý
- Institute of Morphology, Working Group Histology, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria
| | - R Ertl
- VetCore Facility for Research, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria
| | - S Gabner
- Institute of Morphology, Working Group Histology, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria
| | - A Fuchs-Baumgartinger
- Institute of Pathology, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria
| | - Ingrid Walter
- Institute of Morphology, Working Group Histology, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria. .,VetCore Facility for Research, University of Veterinary Medicine, Veterinaerplatz 1, A-1210, Vienna, Austria.
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39
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Lipid metabolism in tumor microenvironment: novel therapeutic targets. Cancer Cell Int 2022; 22:224. [PMID: 35790992 PMCID: PMC9254539 DOI: 10.1186/s12935-022-02645-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 06/25/2022] [Indexed: 11/28/2022] Open
Abstract
Bioactive lipid molecules have been proposed to play important roles linking obesity/metabolic syndrome and cancers. Studies reveal that aberrant lipid metabolic signaling can reprogram cancer cells and non-cancer cells in the tumor microenvironment, contributing to cancer initiation, progression, metastasis, recurrence, and poor therapeutic response. Existing evidence indicates that controlling lipid metabolism can be a potential strategy for cancer prevention and therapy. By reviewing the current literature on the lipid metabolism in various cancers, we summarized major lipid molecules including fatty acids and cholesterol as well as lipid droplets and discussed their critical roles in cancer cells and non-cancer in terms of either promoting- or anti-tumorigenesis. This review provides an overview of the lipid molecules in cellular entities and their tumor microenvironment, adding to the existing knowledge with lipid metabolic reprogramming in immune cells and cancer associated cells. Comprehensive understanding of the regulatory role of lipid metabolism in cellular entities and their tumor microenvironment will provide a new direction for further studies, in a shift away from conventional cancer research. Exploring the lipid-related signaling targets that drive or block cancer development may lead to development of novel anti-cancer strategies distinct from traditional approaches for cancer prevention and treatment.
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40
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Chen C, Zhao W, Lu X, Ma Y, Zhang P, Wang Z, Cui Z, Xia Q. AUP1 regulates lipid metabolism and induces lipid accumulation to accelerate the progression of renal clear cell carcinoma. Cancer Sci 2022; 113:2600-2615. [PMID: 35633317 PMCID: PMC9357643 DOI: 10.1111/cas.15445] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/20/2022] [Accepted: 05/24/2022] [Indexed: 12/01/2022] Open
Abstract
Lipid metabolic reprogramming is a prominent feature of clear cell renal cell carcinoma (ccRCC). Lipid accumulation affects cellular energy homeostasis, biofilm synthesis, lipid signal transduction, and phenotypic transformation in ccRCC. Herein, a prognostic‐related model was constructed, and the prognostic utility of AUP1, a lipid droplet–regulating very low–density lipoprotein assembly factor, in ccRCC was determined through multiparameter analysis. AUP1 expression was significantly higher in clinical samples than in normal tissues and was closely associated with the clinical stage. The inhibition of AUP1 expression impaired the proliferation, migration, and invasion of ACHN and A498 ccRCC cells in vitro and in vivo. RNA‐seq analysis revealed that AUP1 inhibition can significantly reduce the contents of intracellular triglyceride and cholesterol and regulate cell growth by cell cycle arrest, promoting apoptosis and reversing epithelial‐mesenchymal transition. AUP1 regulated the synthesis of cholesterol esters and fatty acids (FAs) in ccRCC cells by targeting sterol O‐acyltransferase 1 and partially promoted the progression of ccRCC. AUP1 also induced lipid accumulation in ccRCC by promoting the de novo synthesis of FAs (inhibiting protein kinase AMP‐activated catalytic subunit alpha 2), inhibiting the rate‐limiting enzyme of FA β oxidation (carnitine palmitoyltransferase 1A), regulating the key enzyme of lipolysis (monoglyceride lipase, MGLL), and inhibiting the lipid transporter StAR‐related lipid transfer domain containing 5 (STARD5). However, it did not affect the intracellular cholesterol synthesis pathway. The differential expression and prognostic significance of MGLL and STARD5 in ccRCC should be further studied. AUP1 may serve as a new and effective potential target and prognostic marker for ccRCC.
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Affiliation(s)
- Chen Chen
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China, 250021.,Department of Urology, Liaocheng People's Hospital, Shandong University, Liaocheng, Shandong, China, 252000
| | - Wei Zhao
- Department of Urology, Liaocheng People's Hospital, Shandong University, Liaocheng, Shandong, China, 252000
| | - Xingxing Lu
- Cancer Research Institute, Xiangya School of Medicine, The Central South University, Changsha, Hunan, China, 410078
| | - Yunbo Ma
- Department of Urology, Liaocheng People's Hospital, Shandong University, Liaocheng, Shandong, China, 252000
| | - Peizhi Zhang
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China, 250021
| | - Zicheng Wang
- Department of Urology, Shandong Provincial Hospital, Shandong First Medical University, Jinan, Shandong, China, 250021
| | - Zilian Cui
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China, 250021
| | - Qinghua Xia
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China, 250021
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41
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Zhang Y, Zhang N, Wang S, Zan Q, Wang X, Yang Q, Yu X, Dong C, Fan L. A lipid droplet-targetable and biothiol-sensitive fluorescent probe for the diagnosis of cancer cells/tissues. Analyst 2022; 147:1695-1701. [PMID: 35332355 DOI: 10.1039/d2an00030j] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Lipid droplets (LDs) have recently been reported as an attractive target for cancer diagnosis and treatment, owing to their special structure or microenvironment changes in cancer development and resistance. However, the relationship between the biothiol level of LDs and cancer is still poorly understood, partially owing to the absence of effective molecular tools. Herein, we developed a LD-targetable and biothiol-sensitive fluorescent probe, BTDA-RSS, by introducing 2,4-dinitrobenzenesulfonyl (DNBS) as the biothiol reaction group into a benzothiazolyl derivative. BTDA-RSS displayed a marked and rapid fluorescence turn-on response toward biothiols, due to the biothiol-triggered cleavage of DNBS to yield the highly fluorescent benzothiazolyl iminocoumarin BTDA. In addition, the probe shows significant LD-targetable ability, and has been applied for imaging endogenous/exogenous biothiol changes in LDs. Importantly, BTDA-RSS has successfully been utilized to distinguish cancerous cells/tissues from normal cells/tissues with excellent contrast. Surprisingly, we demonstrated for the first time the visualization of LD biothiols in surgical specimens from cancer patients, thereby holding great potential for the application of BTDA-RSS in the clinical diagnosis of human cancers.
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Affiliation(s)
- Yuewei Zhang
- School of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, P. R. China.
| | - Ning Zhang
- School of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, P. R. China. .,College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Shuohang Wang
- School of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, P. R. China.
| | - Qi Zan
- Institute of Environmental Science, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Xiaodong Wang
- Institute of Environmental Science, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Qianqian Yang
- Institute of Environmental Science, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Xue Yu
- School of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin, 132022, P. R. China.
| | - Chuan Dong
- Institute of Environmental Science, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Li Fan
- Institute of Environmental Science, Shanxi University, Taiyuan, 030006, P. R. China.
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Heravi G, Yazdanpanah O, Podgorski I, Matherly LH, Liu W. Lipid metabolism reprogramming in renal cell carcinoma. Cancer Metastasis Rev 2022; 41:17-31. [PMID: 34741716 PMCID: PMC10045462 DOI: 10.1007/s10555-021-09996-w] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/21/2021] [Indexed: 12/15/2022]
Abstract
Metabolic reprogramming is recognized as a hallmark of cancer. Lipids are the essential biomolecules required for membrane biosynthesis, energy storage, and cell signaling. Altered lipid metabolism allows tumor cells to survive in the nutrient-deprived environment. However, lipid metabolism remodeling in renal cell carcinoma (RCC) has not received the same attention as in other cancers. RCC, the most common type of kidney cancer, is associated with almost 15,000 death in the USA annually. Being refractory to conventional chemotherapy agents and limited available targeted therapy options has made the treatment of metastatic RCC very challenging. In this article, we review recent findings that support the importance of synthesis and metabolism of cholesterol, free fatty acids (FFAs), and polyunsaturated fatty acids (PUFAs) in the carcinogenesis and biology of RCC. Delineating the detailed mechanisms underlying lipid reprogramming can help to better understand the pathophysiology of RCC and to design novel therapeutic strategies targeting this malignancy.
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Affiliation(s)
- Gioia Heravi
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA
| | - Omid Yazdanpanah
- Department of Internal Medicine, Wayne State University School of Medicine, Detroit, MI, USA
| | - Izabela Podgorski
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA.,Karmanos Cancer Institute, Detroit, MI, USA
| | - Larry H Matherly
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.,Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA.,Karmanos Cancer Institute, Detroit, MI, USA
| | - Wanqing Liu
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI, USA. .,Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA. .,Department of Oncology, Wayne State University School of Medicine, Detroit, MI, USA. .,Karmanos Cancer Institute, Detroit, MI, USA.
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43
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Fader Kaiser CM, Romano PS, Vanrell MC, Pocognoni CA, Jacob J, Caruso B, Delgui LR. Biogenesis and Breakdown of Lipid Droplets in Pathological Conditions. Front Cell Dev Biol 2022; 9:826248. [PMID: 35198567 PMCID: PMC8860030 DOI: 10.3389/fcell.2021.826248] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 12/22/2021] [Indexed: 12/17/2022] Open
Abstract
Lipid droplets (LD) have long been considered as mere fat drops; however, LD have lately been revealed to be ubiquitous, dynamic and to be present in diverse organelles in which they have a wide range of key functions. Although incompletely understood, the biogenesis of eukaryotic LD initiates with the synthesis of neutral lipids (NL) by enzymes located in the endoplasmic reticulum (ER). The accumulation of NL leads to their segregation into nanometric nuclei which then grow into lenses between the ER leaflets as they are further filled with NL. The lipid composition and interfacial tensions of both ER and the lenses modulate their shape which, together with specific ER proteins, determine the proneness of LD to bud from the ER toward the cytoplasm. The most important function of LD is the buffering of energy. But far beyond this, LD are actively integrated into physiological processes, such as lipid metabolism, control of protein homeostasis, sequestration of toxic lipid metabolic intermediates, protection from stress, and proliferation of tumours. Besides, LD may serve as platforms for pathogen replication and defense. To accomplish these functions, from biogenesis to breakdown, eukaryotic LD have developed mechanisms to travel within the cytoplasm and to establish contact with other organelles. When nutrient deprivation occurs, LD undergo breakdown (lipolysis), which begins with the LD-associated members of the perilipins family PLIN2 and PLIN3 chaperone-mediated autophagy degradation (CMA), a specific type of autophagy that selectively degrades a subset of cytosolic proteins in lysosomes. Indeed, PLINs CMA degradation is a prerequisite for further true lipolysis, which occurs via cytosolic lipases or by lysosome luminal lipases when autophagosomes engulf portions of LD and target them to lysosomes. LD play a crucial role in several pathophysiological processes. Increased accumulation of LD in non-adipose cells is commonly observed in numerous infectious diseases caused by intracellular pathogens including viral, bacterial, and parasite infections, and is gradually recognized as a prominent characteristic in a variety of cancers. This review discusses current evidence related to the modulation of LD biogenesis and breakdown caused by intracellular pathogens and cancer.
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Affiliation(s)
- Claudio M Fader Kaiser
- CONICET Dr. Mario H. Burgos Institute of Histology and Embryology (IHEM), Mendoza, Argentina
| | - Patricia S Romano
- CONICET Dr. Mario H. Burgos Institute of Histology and Embryology (IHEM), Mendoza, Argentina
| | - M Cristina Vanrell
- CONICET Dr. Mario H. Burgos Institute of Histology and Embryology (IHEM), Mendoza, Argentina
| | - Cristian A Pocognoni
- CONICET Dr. Mario H. Burgos Institute of Histology and Embryology (IHEM), Mendoza, Argentina
| | - Julieta Jacob
- CONICET Dr. Mario H. Burgos Institute of Histology and Embryology (IHEM), Mendoza, Argentina
| | - Benjamín Caruso
- Instituto de Investigaciones Biologicas y Tecnologicas, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - Laura R Delgui
- CONICET Dr. Mario H. Burgos Institute of Histology and Embryology (IHEM), Mendoza, Argentina
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44
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Cui MY, Yi X, Zhu DX, Wu J. Aberrant lipid metabolism reprogramming and immune microenvironment for gastric cancer: a literature review. Transl Cancer Res 2022; 10:3829-3842. [PMID: 35116681 PMCID: PMC8797372 DOI: 10.21037/tcr-21-655] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 07/05/2021] [Indexed: 12/15/2022]
Abstract
Objective We summarize the aberrant lipid metabolism disorders associated with enzyme activity and expression changes and related immune microenvironment for gastric cancer. Background Gastric cancer is a malignant tumor of the primary digestive system with high incidence, poor prognosis characterized by extensive metastasis and poor effect with radiotherapy and chemotherapy. One of the most important metabolic characteristics of cancer cells is lipid metabolism reprogramming to adapt to the tumor micro-environment. Methods The focus of research in recent years has also been on lipid metabolism disorders, particularly aberrant metabolism of fatty acids (FAs) in gastric cancer cells, as well as an upregulation of the expression and activity of key enzymes in lipid metabolism. These changes remind us of the occurrence and development of gastric cancer. These metabolic changes are not unique to cancer cells. Changes in metabolic procedures also determine the function and viability of immune cells. In the immune microenvironment of gastric cancer, the metabolic competition and interaction between cancer cells and immune cells are not very clear, while a deeper understanding of the topic is critical to targeting the differential metabolic requirements of them that comprise an immune response to cancer offers an opportunity to selectively regulate immune cell function. Conclusions Recent research suggests that targeting metabolism is an emerging and potentially promising treatment strategy for gastric cancer patients. We need to explore it further.
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Affiliation(s)
- Meng-Ying Cui
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xing Yi
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Dan-Xia Zhu
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Jun Wu
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China
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Hao L, Guo Y, Peng Q, Zhang Z, Ji J, Liu Y, Xue Y, Li C, Zheng K, Shi X. Dihydroartemisinin reduced lipid droplet deposition by YAP1 to promote the anti-PD-1 effect in hepatocellular carcinoma. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 96:153913. [PMID: 35026515 DOI: 10.1016/j.phymed.2021.153913] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 12/04/2021] [Accepted: 12/24/2021] [Indexed: 05/16/2023]
Abstract
BACKGROUND Anti-PD-1 was used to treat for many cancers, but the overall response rate of monoclonal antibodies blocking the inhibitory PD-1/PD-L1 was less than 20%. Lipid droplet (LD) deposition reduced chemotherapy efficacy, but whether LD deposition affects anti-PD-1 treatment and its mechanism remains unclear. Dihydroartemisinin (DHA) was FDA proved antimalarial medicine, but its working mechanism on LD deposition has not been clarified. PURPOSE This study aimed to elucidate the mechanism of DHA reducing LDs deposition and improving the efficacy of anti-PD-1. METHODS LD numbers and area were separately detected by electron microscopy and oil Red O staining. The expression of YAP1 and PLIN2 was detected by immunohistochemical staining in liver cancer tissues. Transcription and protein expression levels of YAP1 and PLIN2 in cells were detected by qRT-PCR and Western blot after DHA treated HepG2215 cells and Yap1LKO mice. RESULTS LD accumulation was found in the liver tumor cells of DEN/TOPBCOP-induced liver tumor mice with anti-PD-1 treatment. But DHA treatment or YAP1 knockdown reduced LD deposition and PLIN2 expression in HepG2215 cells. Furthermore, DHA reduced the LD deposition, PLIN2 expression and triglycerides (TG) content in the liver tumor cells of Yap1LKO mice with liver tumor. CONCLUSION Anti-PD-1 promoted LD deposition, while YAP1 knockdown/out reduced LD deposition in HCC. DHA reduced LD deposition by inhibiting YAP1, enhancing the effect of anti-PD-1 therapy.
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Affiliation(s)
- Liyuan Hao
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yinglin Guo
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Qing Peng
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Zhiqin Zhang
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Jingmin Ji
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yiwei Liu
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Yu Xue
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Caige Li
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Kangning Zheng
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China
| | - Xinli Shi
- Department of Pathobiology and Immunology, Hebei University of Chinese Medicine, Shijiazhuang 050200, China.
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Antunes P, Cruz A, Barbosa J, Bonifácio VDB, Pinto SN. Lipid Droplets in Cancer: From Composition and Role to Imaging and Therapeutics. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27030991. [PMID: 35164256 PMCID: PMC8840564 DOI: 10.3390/molecules27030991] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/26/2022] [Accepted: 01/31/2022] [Indexed: 12/11/2022]
Abstract
Cancer is the second most common cause of death worldwide, having its origin in the abnormal growth of cells. Available chemotherapeutics still present major drawbacks, usually associated with high toxicity and poor distribution, with only a small fraction of drugs reaching the tumour sites. Thus, it is urgent to develop novel therapeutic strategies. Cancer cells can reprogram their lipid metabolism to sustain uncontrolled proliferation, and, therefore, accumulate a higher amount of lipid droplets (LDs). LDs are cytoplasmic organelles that store neutral lipids and are hypothesized to sequester anti-cancer drugs, leading to reduced efficacy. Thus, the increased biogenesis of LDs in neoplastic conditions makes them suitable targets for anticancer therapy and for the development of new dyes for cancer cells imaging. In recent years, cancer nanotherapeutics offered some exciting possibilities, including improvement tumour detection and eradication. In this review we summarize LDs biogenesis, structure and composition, and highlight their role in cancer theranostics.
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Affiliation(s)
- Patrícia Antunes
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (P.A.); (A.C.); (J.B.)
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Adriana Cruz
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (P.A.); (A.C.); (J.B.)
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - José Barbosa
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (P.A.); (A.C.); (J.B.)
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Vasco D. B. Bonifácio
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (P.A.); (A.C.); (J.B.)
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Bioengineering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Correspondence: (V.D.B.B.); (S.N.P.)
| | - Sandra N. Pinto
- iBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; (P.A.); (A.C.); (J.B.)
- Associate Laboratory i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- Correspondence: (V.D.B.B.); (S.N.P.)
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Cai L, Ying M, Wu H. Microenvironmental Factors Modulating Tumor Lipid Metabolism: Paving the Way to Better Antitumoral Therapy. Front Oncol 2021; 11:777273. [PMID: 34888248 PMCID: PMC8649922 DOI: 10.3389/fonc.2021.777273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 11/04/2021] [Indexed: 12/28/2022] Open
Abstract
Metabolic reprogramming is one of the emerging hallmarks of cancer and is driven by both the oncogenic mutations and challenging microenvironment. To satisfy the demands of energy and biomass for rapid proliferation, the metabolism of various nutrients in tumor cells undergoes important changes, among which the aberrant lipid metabolism has gained increasing attention in facilitating tumor development and metastasis in the past few years. Obstacles emerged in the aspect of application of targeting lipid metabolism for tumor therapy, due to lacking of comprehensive understanding on its regulating mechanism. Tumor cells closely interact with stromal niche, which highly contributes to metabolic rewiring of critical nutrients in cancer cells. This fact makes the impact of microenvironment on tumor lipid metabolism a topic of renewed interest. Abundant evidence has shown that many factors existing in the tumor microenvironment can rewire multiple signaling pathways and proteins involved in lipid metabolic pathways of cancer cells. Hence in this review, we summarized the recent progress on the understanding of microenvironmental factors regulating tumor lipid metabolism, and discuss the potential of modulating lipid metabolism as an anticancer approach.
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Affiliation(s)
- Limeng Cai
- Cancer Institute (Key Laboratory for Cancer Intervention and Prevention, China National Ministry of Education, Zhejiang Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Minfeng Ying
- Cancer Institute (Key Laboratory for Cancer Intervention and Prevention, China National Ministry of Education, Zhejiang Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Hao Wu
- Cancer Institute (Key Laboratory for Cancer Intervention and Prevention, China National Ministry of Education, Zhejiang Provincial Key Laboratory of Molecular Biology in Medical Sciences), The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Abdulla N, Vincent CT, Kaur M. Mechanistic Insights Delineating the Role of Cholesterol in Epithelial Mesenchymal Transition and Drug Resistance in Cancer. Front Cell Dev Biol 2021; 9:728325. [PMID: 34869315 PMCID: PMC8640133 DOI: 10.3389/fcell.2021.728325] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/29/2021] [Indexed: 12/12/2022] Open
Abstract
Despite the significant advancements made in targeted anti-cancer therapy, drug resistance constitutes a multifaceted phenomenon leading to therapy failure and ultimately mortality. Emerging experimental evidence highlight a role of cholesterol metabolism in facilitating drug resistance in cancer. This review aims to describe the role of cholesterol in facilitating multi-drug resistance in cancer. We focus on specific signaling pathways that contribute to drug resistance and the link between these pathways and cholesterol. Additionally, we briefly discuss the molecular mechanisms related to the epithelial-mesenchymal transition (EMT), and the documented link between EMT, metastasis and drug resistance. We illustrate this by specifically focusing on hypoxia and the role it plays in influencing cellular cholesterol content following EMT induction. Finally, we provide a proposed model delineating the crucial role of cholesterol in EMT and discuss whether targeting cholesterol could serve as a novel means of combatting drug resistance in cancer progression and metastasis.
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Affiliation(s)
- Naaziyah Abdulla
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, South Africa
| | - C Theresa Vincent
- Department of Immunology, Genetics and Pathology, Uppsala, Sweden.,Department of Microbiology, New York University School of Medicine, New York, NY, United States
| | - Mandeep Kaur
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, South Africa
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Pan YH, Chen XX, Dong L, Shao N, Niu LY, Yang QZ. Visualizing nitric oxide-dependent HIF-1 activity under hypoxia with a lipid droplet-targeting fluorescent probe. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.06.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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50
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Hu J, Zhang L, Chen W, Shen L, Jiang J, Sun S, Chen Z. Role of Intra- and Extracellular Lipid Signals in Cancer Stemness and Potential Therapeutic Strategy. Front Pharmacol 2021; 12:730751. [PMID: 34603046 PMCID: PMC8479196 DOI: 10.3389/fphar.2021.730751] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/01/2021] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence showed that cancer stem cells (CSCs) play significant roles in cancer initiation, resistance to therapy, recurrence and metastasis. Cancer stem cells possess the ability of self-renewal and can initiate tumor growth and avoid lethal factors through flexible metabolic reprogramming. Abnormal lipid metabolism has been reported to be involved in the cancer stemness and promote the development of cancer. Lipid metabolism includes lipid uptake, lipolysis, fatty acid oxidation, de novo lipogenesis, and lipid desaturation. Abnormal lipid metabolism leads to ferroptosis of CSCs. In this review, we comprehensively summarized the role of intra- and extracellular lipid signals in cancer stemness, and explored the feasibility of using lipid metabolism-related treatment strategies for future cancer.
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Affiliation(s)
- Jianming Hu
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
| | - Leyi Zhang
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
| | - Wuzhen Chen
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
| | - Lesang Shen
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
| | - Jingxin Jiang
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
| | - Shanshan Sun
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
| | - Zhigang Chen
- Department of Breast Surgery (Surgical Oncology), Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Key Laboratory of Tumor Microenvironment and Immune Therapy of Zhejiang Province, Hangzhou, China
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