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He Y, Qi S, Chen L, Zhu J, Liang L, Chen X, Zhang H, Zhuo L, Zhao S, Liu S, Xie T. The roles and mechanisms of SREBP1 in cancer development and drug response. Genes Dis 2024; 11:100987. [PMID: 38560498 PMCID: PMC10978545 DOI: 10.1016/j.gendis.2023.04.022] [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: 02/21/2023] [Revised: 04/24/2023] [Accepted: 04/24/2023] [Indexed: 04/04/2024] Open
Abstract
Cancer occurrence and development are closely related to increased lipid production and glucose consumption. Lipids are the basic component of the cell membrane and play a significant role in cancer cell processes such as cell-to-cell recognition, signal transduction, and energy supply, which are vital for cancer cell rapid proliferation, invasion, and metastasis. Sterol regulatory element-binding transcription factor 1 (SREBP1) is a key transcription factor regulating the expression of genes related to cholesterol biosynthesis, lipid homeostasis, and fatty acid synthesis. In addition, SREBP1 and its upstream or downstream target genes are implicated in various metabolic diseases, particularly cancer. However, no review of SREBP1 in cancer biology has yet been published. Herein, we summarized the roles and mechanisms of SREBP1 biological processes in cancer cells, including SREBP1 modification, lipid metabolism and reprogramming, glucose and mitochondrial metabolism, immunity, and tumor microenvironment, epithelial-mesenchymal transition, cell cycle, apoptosis, and ferroptosis. Additionally, we discussed the potential role of SREBP1 in cancer prognosis, drug response such as drug sensitivity to chemotherapy and radiotherapy, and the potential drugs targeting SREBP1 and its corresponding pathway, elucidating the potential clinical application based on SREBP1 and its corresponding signal pathway.
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Affiliation(s)
- Ying He
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Shasha Qi
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Lu Chen
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Jinyu Zhu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Linda Liang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Xudong Chen
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Hao Zhang
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Lvjia Zhuo
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Shujuan Zhao
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
| | - Shuiping Liu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Laboratory of Cancer Genomics, Division of Cellular and Molecular Research, National Cancer Centre Singapore, Singapore 169610, Singapore
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang 311121, China
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Cenigaonandia-Campillo A, Garcia-Bautista A, Rio-Vilariño A, Cebrian A, Del Puerto L, Pellicer JA, Gabaldón JA, Pérez-Sánchez H, Carmena-Bargueño M, Meroño C, Traba J, Fernandez-Aceñero MJ, Baños-Herraiz N, Mozas-Vivar L, Núñez-Delicado E, Garcia-Foncillas J, Aguilera Ó. Vitamin-C-dependent downregulation of the citrate metabolism pathway potentiates pancreatic ductal adenocarcinoma growth arrest. Mol Oncol 2024. [PMID: 38425123 DOI: 10.1002/1878-0261.13616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/17/2024] [Accepted: 02/15/2024] [Indexed: 03/02/2024] Open
Abstract
In pancreatic ductal adenocarcinoma (PDAC), metabolic rewiring and resistance to standard therapy are closely associated. PDAC cells show enormous requirements for glucose-derived citrate, the first rate-limiting metabolite in the synthesis of new lipids. Both the expression and activity of citrate synthase (CS) are extraordinarily upregulated in PDAC. However, no previous relationship between gemcitabine response and citrate metabolism has been documented in pancreatic cancer. Here, we report for the first time that pharmacological doses of vitamin C are capable of exerting an inhibitory action on the activity of CS, reducing glucose-derived citrate levels. Moreover, ascorbate targets citrate metabolism towards the de novo lipogenesis pathway, impairing fatty acid synthase (FASN) and ATP citrate lyase (ACLY) expression. Lowered citrate availability was found to be directly associated with diminished proliferation and, remarkably, enhanced gemcitabine response. Moreover, the deregulated citrate-derived lipogenic pathway correlated with a remarkable decrease in extracellular pH through inhibition of lactate dehydrogenase (LDH) and overall reduced glycolytic metabolism. Modulation of citric acid metabolism in highly chemoresistant pancreatic adenocarcinoma, through molecules such as vitamin C, could be considered as a future clinical option to improve patient response to standard chemotherapy regimens.
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Affiliation(s)
| | - Ana Garcia-Bautista
- Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jimenez Diaz-UAM (Madrid), Spain
| | - Anxo Rio-Vilariño
- Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jimenez Diaz-UAM (Madrid), Spain
| | - Arancha Cebrian
- Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jimenez Diaz-UAM (Madrid), Spain
| | - Laura Del Puerto
- Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jimenez Diaz-UAM (Madrid), Spain
| | - José Antonio Pellicer
- Molecular Recognition and Encapsulation Research Group (REM), Health Sciences Department, Universidad Católica de Murcia (UCAM), Spain
| | - José Antonio Gabaldón
- Molecular Recognition and Encapsulation Research Group (REM), Health Sciences Department, Universidad Católica de Murcia (UCAM), Spain
| | - Horacio Pérez-Sánchez
- Bioinformatics and High-Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), Spain
| | - Miguel Carmena-Bargueño
- Bioinformatics and High-Performance Computing Research Group (BIO-HPC), Computer Engineering Department, Universidad Católica de Murcia (UCAM), Spain
| | - Carolina Meroño
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid (CSIC-UAM), Spain
- Instituto Universitario de Biología Molecular-UAM (IUBM-UAM), Departamento de Biología Molecular, Universidad Autónoma de Madrid, Spain
| | - Javier Traba
- Centro de Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid (CSIC-UAM), Spain
- Instituto Universitario de Biología Molecular-UAM (IUBM-UAM), Departamento de Biología Molecular, Universidad Autónoma de Madrid, Spain
| | | | | | - Lorena Mozas-Vivar
- Preclinical programe START Madrid-FJD Hospital fundación Jiménez Díaz, Spain
| | - Estrella Núñez-Delicado
- Molecular Recognition and Encapsulation Research Group (REM), Health Sciences Department, Universidad Católica de Murcia (UCAM), Spain
| | - Jesús Garcia-Foncillas
- Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jimenez Diaz-UAM (Madrid), Spain
| | - Óscar Aguilera
- Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jimenez Diaz-UAM (Madrid), Spain
- Universidad Católica de Murcia (UCAM), Spain
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3
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Saliakoura M, Konstantinidou G. Lipid Metabolic Alterations in KRAS Mutant Tumors: Unmasking New Vulnerabilities for Cancer Therapy. Int J Mol Sci 2023; 24:ijms24021793. [PMID: 36675307 PMCID: PMC9864058 DOI: 10.3390/ijms24021793] [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: 12/02/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 01/18/2023] Open
Abstract
KRAS is one of the most commonly mutated genes, an event that leads to development of highly aggressive and resistant to any type of available therapy tumors. Mutated KRAS drives a complex network of lipid metabolic rearrangements to support the adaptation of cancer cells to harsh environmental conditions and ensure their survival. Because there has been only a little success in the continuous efforts of effectively targeting KRAS-driven tumors, it is of outmost importance to delineate the exact mechanisms of how they get rewired, leading to this distinctive phenotype. Therefore, the aim of this review is to summarize the available data acquired over the last years with regard to the lipid metabolic regulation of KRAS-driven tumors and elucidate their specific characteristics in an attempt to unravel novel therapeutic targets.
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Bouzas A, Gómez de Cedrón M, Colmenarejo G, Laparra-Llopis JM, Moreno-Rubio J, Montoya JJ, Reglero G, Casado E, Tabares B, Sereno M, Ramírez de Molina A. Phenolic diterpenes from Rosemary supercritical extract inhibit non-small cell lung cancer lipid metabolism and synergise with therapeutic drugs in the clinic. Front Oncol 2022; 12:1046369. [PMID: 36439419 PMCID: PMC9682134 DOI: 10.3389/fonc.2022.1046369] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 10/17/2022] [Indexed: 02/25/2024] Open
Abstract
UNLABELLED Lung cancer is one of the most deadly and common cancers in the world. The molecular features of patient's tumours dictate the different therapeutic decisions, which combines targeted therapy, chemotherapy, and immunotherapy. Altered cellular metabolism is one of the hallmarks of cancer. Tumour cells reprogram their metabolism to adapt to their novel requirements of growth, proliferation, and survival. Together with the Warburg effect, the role of lipid metabolism alterations in cancer development and prognosis has been highlighted. Several lipid related genes have been shown to promote transformation and progression of cancer cells and have been proposed as biomarkers for prognosis. Nevertheless, the exact mechanisms of the regulation of lipid metabolism and the biological consequences in non-small cell lung cancer (NSCLC) have not been elucidated yet. There is an urgent necessity to develop multidisciplinary and complementary strategies to improve NSCLC patients´ well-being and treatment response. Nutrients can directly affect fundamental cellular processes and some diet-derived ingredients, bioactive natural compounds and natural extracts have been shown to inhibit the tumour growth in preclinical and clinical trials. Previously, we described a supercritical extract of rosemary (SFRE) (12 - 16% composition of phenolic diterpenes carnosic acid and carnosol) as a potential antitumoral agent in colon and breast cancer due to its effects on the inhibition of lipid metabolism and DNA synthesis, and in the reduction of resistance to 5-FluoroUracil (5-FU). Herein, we demonstrate SFRE inhibits NSCLC cell bioenergetics identifying several lipid metabolism implicated targets. Moreover, SFRE synergises with standard therapeutic drugs used in the clinic, such as cisplatin, pemetrexed and pembrolizumab to inhibit of cell viability of NSCLC cells. Importantly, the clinical relevance of SFRE as a complement in the treatment of NSCLC patients is suggested based on the results of a pilot clinical trial where SFRE formulated with bioactive lipids (PCT/ES2017/070263) diminishes metabolic and inflammatory targets in peripheral-blood mononuclear cells (PBMC), such as MAPK (p=0.04), NLRP3 (p=0.044), and SREBF1 (p=0.047), which may augment the immune antitumour function. Based on these results, SFRE merits further investigation as a co-adjuvant in the treatment of NSCLC. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov Identifier NCT05080920.
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Affiliation(s)
- Adrián Bouzas
- Precision Nutrition and Cancer Program, Molecular Oncology Group, IMDEA Food Institute, CEI UAM, CSIC, Madrid, Spain
- CANAAN Research & Investment Group, Madrid, Spain
| | - Marta Gómez de Cedrón
- Precision Nutrition and Cancer Program, Molecular Oncology Group, IMDEA Food Institute, CEI UAM, CSIC, Madrid, Spain
| | - Gonzalo Colmenarejo
- Biostatistics and Bioinformatics Unit, IMDEA Food Institute, CEI UAM, CSIC, Madrid, Spain
| | | | - Juan Moreno-Rubio
- Precision Nutrition and Cancer Program, Molecular Oncology Group, IMDEA Food Institute, CEI UAM, CSIC, Madrid, Spain
- Medical Oncology Department, Infanta Sofía University Hospital, San Sebastián de los Reyes, Madrid, Spain
| | - Juan José Montoya
- CANAAN Research & Investment Group, Madrid, Spain
- Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - Guillermo Reglero
- Precision Nutrition and Cancer Program, Molecular Oncology Group, IMDEA Food Institute, CEI UAM, CSIC, Madrid, Spain
- Department of Production and Characterization of Novel Foods, Institute of Food Science Research (CIAL) (CSIC.UAM), Madrid, Spain
| | - Enrique Casado
- Medical Oncology Department, Infanta Sofía University Hospital, San Sebastián de los Reyes, Madrid, Spain
| | - Beatriz Tabares
- Medical Oncology Department, Infanta Sofía University Hospital, San Sebastián de los Reyes, Madrid, Spain
| | - María Sereno
- Medical Oncology Department, Infanta Sofía University Hospital, San Sebastián de los Reyes, Madrid, Spain
| | - Ana Ramírez de Molina
- Precision Nutrition and Cancer Program, Molecular Oncology Group, IMDEA Food Institute, CEI UAM, CSIC, Madrid, Spain
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Moss DY, McCann C, Kerr EM. Rerouting the drug response: Overcoming metabolic adaptation in KRAS-mutant cancers. Sci Signal 2022; 15:eabj3490. [PMID: 36256706 DOI: 10.1126/scisignal.abj3490] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Mutations in guanosine triphosphatase KRAS are common in lung, colorectal, and pancreatic cancers. The constitutive activity of mutant KRAS and its downstream signaling pathways induces metabolic rewiring in tumor cells that can promote resistance to existing therapeutics. In this review, we discuss the metabolic pathways that are altered in response to treatment and those that can, in turn, alter treatment efficacy, as well as the role of metabolism in the tumor microenvironment (TME) in dictating the therapeutic response in KRAS-driven cancers. We highlight metabolic targets that may provide clinical opportunities to overcome therapeutic resistance and improve survival in patients with these aggressive cancers.
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Affiliation(s)
- Deborah Y Moss
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE Northern Ireland, UK
| | - Christopher McCann
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE Northern Ireland, UK
| | - Emma M Kerr
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, BT9 7AE Northern Ireland, UK
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Lung Adenocarcinoma Cell Sensitivity to Chemotherapies: A Spotlight on Lipid Droplets and SREBF1 Gene. Cancers (Basel) 2022; 14:cancers14184454. [PMID: 36139614 PMCID: PMC9497419 DOI: 10.3390/cancers14184454] [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: 07/15/2022] [Revised: 09/02/2022] [Accepted: 09/09/2022] [Indexed: 11/24/2022] Open
Abstract
Simple Summary The accumulation of lipid droplets (LDs) and the high expression of genes involved in LD formation, such as SREBF1 (sterol regulatory element binding transcription factor 1), are attributed to cancer cell resistance against anticancer drugs and poor prognosis. We assessed lung cancer cells with and without LDs for their sensitivity to chemotherapeutics cisplatin and etoposide. In either serum-free basal medium or inflammatory supernatants generated during neutrophil degranulation in vitro, both drugs strongly reduced SREBF1 expression, which did not parallel with LD formation and cell sensitivity to chemotherapeutics. Nevertheless, under basal conditions, SREBF1 expression in cancer cells correlated with LD levels, and the lower expression of SREBF1 in tumors than in adjacent nontumor tissues showed a prognostic value for overall better survival of patients with non-small-cell lung cancer. Strategies targeting lipid metabolism in cancer are promising therapeutic and/or diagnostic approaches. Abstract To explore the relationship between cancer cell SREBF1 expression, lipid droplets (LDs) formation, and the sensitivity to chemotherapies, we cultured lung adenocarcinoma cells H1299 (with LD) and H1563 (without LD) in a serum-free basal medium (BM) or neutrophil degranulation products containing medium (NDM), and tested cell responses to cisplatin and etoposide. By using the DESeq2 Bioconductor package, we detected 674 differentially expressed genes (DEGs) associated with NDM/BM differences between two cell lines, many of these genes were associated with the regulation of sterol and cholesterol biosynthesis processes. Specifically, SREBF1 markedly declined in both cell lines cultured in NDM or when treated with chemotherapeutics. Despite the latter, H1563 exhibited LD formation and resistance to etoposide, but not to cisplatin. Although H1299 cells preserved LDs, these cells were similarly sensitive to both drugs. In a cohort of 292 patients with non-small-cell lung cancer, a lower SREBF1 expression in tumors than in adjacent nontumor tissue correlated with overall better survival, specifically in patients with adenocarcinoma at stage I. Our findings imply that a direct correlation between SREBF1 and LD accumulation can be lost due to the changes in cancer cell environment and/or chemotherapy. The role of LDs in lung cancer development and response to therapies remains to be examined in more detail.
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Zhao Q, Lin X, Wang G. Targeting SREBP-1-Mediated Lipogenesis as Potential Strategies for Cancer. Front Oncol 2022; 12:952371. [PMID: 35912181 PMCID: PMC9330218 DOI: 10.3389/fonc.2022.952371] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 06/22/2022] [Indexed: 11/13/2022] Open
Abstract
Sterol regulatory element binding protein-1 (SREBP-1), a transcription factor with a basic helix–loop–helix leucine zipper, has two isoforms, SREBP-1a and SREBP-1c, derived from the same gene for regulating the genes of lipogenesis, including acetyl-CoA carboxylase, fatty acid synthase, and stearoyl-CoA desaturase. Importantly, SREBP-1 participates in metabolic reprogramming of various cancers and has been a biomarker for the prognosis or drug efficacy for the patients with cancer. In this review, we first introduced the structure, activation, and key upstream signaling pathway of SREBP-1. Then, the potential targets and molecular mechanisms of SREBP-1-regulated lipogenesis in various types of cancer, such as colorectal, prostate, breast, and hepatocellular cancer, were summarized. We also discussed potential therapies targeting the SREBP-1-regulated pathway by small molecules, natural products, or the extracts of herbs against tumor progression. This review could provide new insights in understanding advanced findings about SREBP-1-mediated lipogenesis in cancer and its potential as a target for cancer therapeutics.
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Affiliation(s)
- Qiushi Zhao
- National Engineering Laboratory for AIDS Vaccine, Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
| | - Xingyu Lin
- Department of Thoracic Surgery, The First Hospital of Jilin University, Changchun, China
- *Correspondence: Xingyu Lin, ; Guan Wang,
| | - Guan Wang
- National Engineering Laboratory for AIDS Vaccine, Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, School of Life Sciences, Jilin University, Changchun, China
- *Correspondence: Xingyu Lin, ; Guan Wang,
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Synergistic Tumor Inhibition via Energy Elimination by Repurposing Penfluridol and 2-Deoxy-D-Glucose in Lung Cancer. Cancers (Basel) 2022; 14:cancers14112750. [PMID: 35681729 PMCID: PMC9179427 DOI: 10.3390/cancers14112750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 12/26/2022] Open
Abstract
Simple Summary Drug repurposing has been effective for discovering novel treatments for cancer. The antipsychotic agent penfluridol was reported to suppress lung cancer growth via ATP energy deprivation. The aim of our study was to investigate how penfluridol influences energy metabolism in lung cancer cells. We observed that penfluridol inhibited mitochondrial oxidative phosphorylation (OXPHOS), but induced glycolysis to compensate for the loss of ATP caused by suppression of mitochondrial OXPHOS. We also confirmed that inhibition of glycolysis by 2-deoxy-D-glucose (2DG) significantly augmented the antitumor effects caused by penfluridol in vitro and in vivo. Our studies provide novel insights into repurposing penfluridol combined with 2-DG for lung cancer treatment. Abstract Energy metabolism is the basis for cell growth, and cancer cells in particular, are more energy-dependent cells because of rapid cell proliferation. Previously, we found that penfluridol, an antipsychotic drug, has the ability to trigger cell growth inhibition of lung cancer cells via inducing ATP energy deprivation. The toxic effect of penfluridol is related to energy metabolism, but the underlying mechanisms remain unclear. Herein, we discovered that treatment of A549 and HCC827 lung cancer cells with penfluridol caused a decrease in the total amount of ATP, especially in A549 cells. An Agilent Seahorse ATP real-time rate assay revealed that ATP production rates from mitochondrial respiration and glycolysis were, respectively, decreased and increased after penfluridol treatment. Moreover, the amount and membrane integrity of mitochondria decreased, but glycolysis-related proteins increased after penfluridol treatment. Furthermore, we observed that suppression of glycolysis by reducing glucose supplementation or using 2-deoxy-D-glucose (2DG) synergistically enhanced the inhibitory effect of penfluridol on cancer cell growth and the total amount of mitochondria. A mechanistic study showed that the penfluridol-mediated energy reduction was due to inhibition of critical regulators of mitochondrial biogenesis, the sirtuin 1 (SIRT1)/peroxisome-proliferator-activated receptor co-activator-1α (PGC-1α) axis. Upregulation of the SIRT1/PGC-1α axis reversed the inhibitory effect of penfluridol on mitochondrial biogenesis and cell viability. Clinical lung cancer samples revealed a positive correlation between PGC-1α (PPARGC1A) and SIRT1 expression. In an orthotopic lung cancer mouse model, the anticancer activities of penfluridol, including growth and metastasis inhibition, were also enhanced by combined treatment with 2DG. Our study results strongly support that a combination of repurposing penfluridol and a glycolysis inhibitor would be a good strategy for enhancing the anticancer activities of penfluridol in lung cancer.
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Lipidomics reveals that sustained SREBP-1-dependent lipogenesis is a key mediator of gefitinib-acquired resistance in EGFR-mutant lung cancer. Cell Death Discov 2021; 7:353. [PMID: 34775471 PMCID: PMC8590692 DOI: 10.1038/s41420-021-00744-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 09/17/2021] [Accepted: 10/14/2021] [Indexed: 12/24/2022] Open
Abstract
Patients with EGFR mutations in non-small cell lung cancer (NSCLC) have been greatly benefited from gefitinib, however, the therapeutic has failed due to the presence of acquired resistance. In this study, we show that gefitinib significantly induces downregulation of Sterol Regulator Element Binding (SREBP1) in therapy-sensitive cells. However, this was not observed in EGFR mutant NSCLC cells with acquired resistance. Lipidomics analysis showed that gefitinib could differently change the proportion of saturated phospholipids and unsaturated phospholipids in gefitinib-sensitive and acquired-resistant cells. Besides, levels of ROS and MDA were increased upon SREBP1 inhibition and even more upon gefitinib treatment. Importantly, inhibition of SREBP1 sensitizes EGFR-mutant therapy-resistant NSCLC to gefitinib both in vitro and in vivo models. These data suggest that sustained de novo lipogenesis through the maintenance of active SRBEP-1 is a key feature of acquired resistance to gefitinib in EGFR mutant lung cancer. Taken together, targeting SREBP1-induced lipogenesis is a promising approach to overcome acquired resistance to gefitinib in EGFR-mutant lung cancer.
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Jin L, Zhu LY, Pan YL, Fu HQ, Zhang J. Prothymosin α promotes colorectal carcinoma chemoresistance through inducing lipid droplet accumulation. Mitochondrion 2021; 59:123-134. [PMID: 33872798 DOI: 10.1016/j.mito.2021.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 01/05/2021] [Accepted: 04/05/2021] [Indexed: 12/13/2022]
Abstract
Colorectal cancer (CRC) affects millions of people worldwide. Chemoresistance seriously impairs the therapeutic effects. Lipid droplets (LDs) abnormally accumulate in CRC supported chemoresistance. Exploring the mechanism of LD-induced chemoresistance is extremely important for improving prognosis of CRC patients. The expression of PTMA was increased in both CRC tissues and cells, which was positively correlated with LD production. PTMA facilitated chemoresistance to gemcitabine by inducing LD production in CRC cells. PTMA enhanced LD biogenesis and chemoresistance to gemcitabine by promoting SREBP-1-mediated lipogenesis and STAT3 activation in CRC.
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Affiliation(s)
- Long Jin
- Department of Oncology, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Li-Yong Zhu
- Gastrointestinal Surgery Department II, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Yu-Liang Pan
- Department of Oncology, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Hui-Qun Fu
- Department of Oncology, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China
| | - Jun Zhang
- Department of Oncology, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan, China.
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