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Kim W, Park S, Park T, Kim S, Kim J, Bong JH, Lee M. Anticancer effects of high-dose extracellular citrate treatment in pancreatic cancer cells under different glucose concentrations. Heliyon 2024; 10:e37917. [PMID: 39315179 PMCID: PMC11417537 DOI: 10.1016/j.heliyon.2024.e37917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 09/11/2024] [Accepted: 09/12/2024] [Indexed: 09/25/2024] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive solid tumor. Recently, the uptake of extracellular citrate by the sodium-dependent citrate transporter (NaCT), encoded by SLC13A5, has been demonstrated to exert profound effects on cancer cell metabolism. However, research on the function of extracellular citrate in PDAC pathogenesis and the relationship between NaCT expression and the tumor metabolic microenvironment is limited. Therefore, we aimed to evaluate the expression of citrate transporters across a spectrum of glucose concentrations in pancreatic cancer and systematically explore the effects of sodium citrate treatment on pancreatic cancer cells at different glucose concentrations. We observed a positive correlation between glucose concentration and NaCT expression in PDAC cell lines. Extracellular sodium citrate significantly reduced cell viability partially due to reduction in intracellular Ca2+ levels and decreased the migration of human PDAC cells. Furthermore, we observed a decrease in the levels of the stem cell marker prominin I (CD133) following sodium citrate treatment. Notably, the combination treatment of gemcitabine and extracellular sodium citrate exhibited a synergistic anticancer effect in both two-dimensional (2D) and three-dimensional (3D) culture systems. Additionally, we confirmed that pH slightly increased upon administration of sodium citrate, indicating that this could potentially augment the efficacy of gemcitabine. Altogether, these findings suggest that exogenous sodium citrate treatment, particularly in combination with gemcitabine, may represent a novel therapeutic strategy for treating PDAC. This approach holds promise for disrupting PDAC cell metabolism and inhibiting tumor progression.
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Affiliation(s)
- Wonjin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Sanghee Park
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Taehyun Park
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Seunghwan Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jimin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
| | - Ji-Hong Bong
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
- Institute for New Drug Development, College of Life Science and Bioengineering, Incheon National University, 22012, Republic of Korea
| | - Misu Lee
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea
- Institute for New Drug Development, College of Life Science and Bioengineering, Incheon National University, 22012, Republic of Korea
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2
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Niu N, Ye J, Hu Z, Zhang J, Wang Y. Regulative Roles of Metabolic Plasticity Caused by Mitochondrial Oxidative Phosphorylation and Glycolysis on the Initiation and Progression of Tumorigenesis. Int J Mol Sci 2023; 24:ijms24087076. [PMID: 37108242 PMCID: PMC10139088 DOI: 10.3390/ijms24087076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/23/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023] Open
Abstract
One important feature of tumour development is the regulatory role of metabolic plasticity in maintaining the balance of mitochondrial oxidative phosphorylation and glycolysis in cancer cells. In recent years, the transition and/or function of metabolic phenotypes between mitochondrial oxidative phosphorylation and glycolysis in tumour cells have been extensively studied. In this review, we aimed to elucidate the characteristics of metabolic plasticity (emphasizing their effects, such as immune escape, angiogenesis migration, invasiveness, heterogeneity, adhesion, and phenotypic properties of cancers, among others) on tumour progression, including the initiation and progression phases. Thus, this article provides an overall understanding of the influence of abnormal metabolic remodeling on malignant proliferation and pathophysiological changes in carcinoma.
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Affiliation(s)
- Nan Niu
- Shenzhen Engineering Labortaory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Lihu Campus of Shenzhen University, Shenzhen 518055, China
- College of Physics and Optoelectronic Engineering, Canghai Campus of Shenzhen University, Shenzhen 518060, China
| | - Jinfeng Ye
- Shenzhen Engineering Labortaory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Lihu Campus of Shenzhen University, Shenzhen 518055, China
| | - Zhangli Hu
- Shenzhen Engineering Labortaory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Lihu Campus of Shenzhen University, Shenzhen 518055, China
| | - Junbin Zhang
- Shenzhen Engineering Labortaory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Lihu Campus of Shenzhen University, Shenzhen 518055, China
| | - Yun Wang
- Shenzhen Engineering Labortaory for Marine Algal Biotechnology, Longhua Innovation Institute for Biotechnology, College of Life Sciences and Oceanography, Lihu Campus of Shenzhen University, Shenzhen 518055, China
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3
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Kim SY, Kim D, Kim J, Ko HY, Kim WJ, Park Y, Lee HW, Han DH, Kim KS, Park S, Lee M, Yun M. Extracellular Citrate Treatment Induces HIF1α Degradation and Inhibits the Growth of Low-Glycolytic Hepatocellular Carcinoma under Hypoxia. Cancers (Basel) 2022; 14:3355. [PMID: 35884416 PMCID: PMC9315704 DOI: 10.3390/cancers14143355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 12/04/2022] Open
Abstract
HCC is well known for low glycolysis in the tumors, whereas hypoxia induces glycolytic phenotype and tumor progression. This study was conducted to evaluate the expression of SLCs in human HCCs and investigated whether extracellular nutrient administration related to SLCs in low-glycolytic HCC can prevent hypoxic tumor progression. SLCs expression was screened according to the level of glycolysis in HCCs. Then, whether extracellular nutrient treatment can affect hypoxic tumor progression, as well as the mechanisms, were evaluated in an in vitro cell line and an in vivo animal model. Low-glycolytic HCCs showed high SLC13A5/NaCT and SLC16A1/MCT1 but low SLC2A1/GLUT1 and HIF1α/HIF1α expression. Especially, high SLC13A5 expression was significantly associated with good overall survival in the Cancer Genome Atlas (TCGA) database. In HepG2 cells with the highest NaCT expression, extracellular citrate treatment upon hypoxia induced HIF1α degradation, which led to reduced glycolysis and cellular proliferation. Finally, in HepG2-animal models, the citrate-treated group showed smaller tumor with less hypoxic areas than the vehicle-treated group. In patients with HCC, SLC13A5/NaCT is an important SLC, which is associated with low glycolysis and good prognosis. Extracellular citrate treatment induced the failure of metabolic adaptation to hypoxia and tumor growth inhibition, which can be a potential therapeutic strategy in HCCs.
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Affiliation(s)
- Seon Yoo Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (S.Y.K.); (D.K.); (J.K.); (H.Y.K.); (Y.P.)
| | - Dongwoo Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (S.Y.K.); (D.K.); (J.K.); (H.Y.K.); (Y.P.)
| | - Jisu Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (S.Y.K.); (D.K.); (J.K.); (H.Y.K.); (Y.P.)
| | - Hae Young Ko
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (S.Y.K.); (D.K.); (J.K.); (H.Y.K.); (Y.P.)
| | - Won Jin Kim
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, Korea;
| | - Youngjoo Park
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (S.Y.K.); (D.K.); (J.K.); (H.Y.K.); (Y.P.)
| | - Hye Won Lee
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea;
| | - Dai Hoon Han
- Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (D.H.H.); (K.S.K.)
| | - Kyung Sik Kim
- Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (D.H.H.); (K.S.K.)
| | - Sunghyouk Park
- Department of Manufacturing Pharmacy, Natural Product Research Institute, College of Pharmacy, Seoul National University, Seoul 08826, Korea;
| | - Misu Lee
- Division of Life Sciences, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, Korea;
- Institute for New Drug Development, College of Life Science and Bioengineering, Incheon National University, Incheon 22012, Korea
| | - Mijin Yun
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Korea; (S.Y.K.); (D.K.); (J.K.); (H.Y.K.); (Y.P.)
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4
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Wang X, Yin Y, Qian W, Peng C, Shen S, Wang T, Zhao S. Citric acid of ovarian cancer metabolite induces pyroptosis via the caspase-4/TXNIP-NLRP3-GSDMD pathway in ovarian cancer. FASEB J 2022; 36:e22362. [PMID: 35608902 DOI: 10.1096/fj.202101993rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 04/26/2022] [Accepted: 05/10/2022] [Indexed: 11/11/2022]
Abstract
Malignant tumors display profound changes in cellular metabolism, yet how these altered metabolites affect the development and growth of tumors is not fully understood. Here, we used metabolomics to analyze the metabolic profile differences in ovarian cancer and found that citric acid (CA) is the most significantly downregulated metabolite. Recently, CA has been reported to inhibit the growth of a variety of tumor cells, but whether it is involved in pyroptosis of ovarian cancer and its potential molecular mechanisms still remains to be further investigated. Here, we demonstrated that CA inhibits the growth of ovarian cancer cells in a dose-dependent manner. RNA-seq analysis revealed that CA significantly promoted the expression of thioredoxin interacting protein (TXNIP) and caspase-4 (CASP4). Morphologic examination by transmission electron microscopy indicated that CA-treated ovarian cancer cells exhibited typical pyroptosis characteristics. Further mechanistic analyses showed that CA facilitates pyroptosis via the CASP4/TXNIP-NLRP3-Gesdermin-d (GSDMD) pathway in ovarian cancer. This study elucidated that CA induces ovarian cancer cell death through classical and non-classical pyroptosis pathways, which may be beneficial as an ovarian cancer therapy.
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Affiliation(s)
- Xiaogang Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Yuxin Yin
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Wei Qian
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Chen Peng
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Sunan Shen
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Tingting Wang
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing, China.,Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing, China
| | - Shuli Zhao
- General Clinical Research Center, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
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Guo S, Duan W, Wang Y, Chen L, Yang C, Gu X, Xue Q, Li R, Zhang Z. Component Analysis and Anti-Colorectal Cancer Mechanism via AKT/mTOR Signalling Pathway of Sanghuangporus vaninii Extracts. Molecules 2022; 27:molecules27041153. [PMID: 35208943 PMCID: PMC8880221 DOI: 10.3390/molecules27041153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 01/28/2022] [Accepted: 02/01/2022] [Indexed: 02/01/2023] Open
Abstract
Sanghuangporus vaninii (Ljub.) L.W. Zhou & Y.C. Dai (SV) is a major cultivar of Sanghuang, which is well known as an excellent anti-tumour drug and reaches the mainstream market in China. Water, 60% ethanol and 95% ethanol were used to extract the drug, and three kinds of polar extracts were obtained separately. Compared with water extracts and 95% ethanol extracts, the 60% ethanol extract had the highest flavonoid content, and its polysaccharide content was greater than that in the 95% ethanol extract and lower than that in the water extract. Its essential components were phenolics whose majority were phenolic acids, flavonoids and phenylpropanoids. This extract has better inhibition effects on the proliferation of SW480 human colon cancer cells, inducing cell apoptosis and blocking G2/M period cells. It can significantly inhibit gene expression and reduce the activation of the AKT/mTOR signalling pathway. The anti-cancer activity of the 60% ethanol extract is satisfactory and may be a result of the combined effects of polysaccharides and flavonoids. The data suggest that the 60% ethanol extract can be used as an adjuvant for chemotherapy and as a potential anti-cancer agent with broad development prospects.
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Affiliation(s)
- Shanshan Guo
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
| | - Wenwen Duan
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
| | - Yaxin Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
| | - Liangmian Chen
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
| | - Chenchen Yang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Xuezhu Gu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
| | - Qinghai Xue
- The TCM Clinic of China Academy, China Academy of Chinese Medical Sciences, Beijing 100700, China;
| | - Raorao Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
- Correspondence: (R.L.); (Z.Z.); Tel.: +86-10-13366939025 (R.L.); +86-10-15901052679 (Z.Z.); Fax: +86-10-64013996 (R.L. & Z.Z.)
| | - Zhijie Zhang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China; (S.G.); (W.D.); (Y.W.); (L.C.); (C.Y.); (X.G.)
- Correspondence: (R.L.); (Z.Z.); Tel.: +86-10-13366939025 (R.L.); +86-10-15901052679 (Z.Z.); Fax: +86-10-64013996 (R.L. & Z.Z.)
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Liu X, Hoft DF, Peng G. Tumor microenvironment metabolites directing T cell differentiation and function. Trends Immunol 2022; 43:132-147. [PMID: 34973923 PMCID: PMC8810659 DOI: 10.1016/j.it.2021.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/03/2021] [Accepted: 12/05/2021] [Indexed: 02/03/2023]
Abstract
Metabolic reprogramming of cancer cells creates a unique tumor microenvironment (TME) characterized by the limited availability of nutrients, which subsequently affects the metabolism, differentiation, and function of tumor-infiltrating T lymphocytes (TILs). TILs can also be inhibited by tumor-derived metabolic waste products and low oxygen. Therefore, a thorough understanding of how such unique metabolites influence mammalian T cell differentiation and function can inform novel anticancer therapeutic approaches. Here, we highlight the importance of these metabolites in modulating various T cell subsets within the TME, dissecting how these changes might alter clinical outcomes. We explore potential TME metabolic determinants that might constitute candidate targets for cancer immunotherapies, ideally leading to future strategies for reprogramming tumor metabolism to potentiate anticancer T cell functions.
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Affiliation(s)
- Xia Liu
- Division of Infectious Diseases, Allergy and Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Daniel F Hoft
- Division of Infectious Diseases, Allergy and Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA; Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, MO 63104, USA
| | - Guangyong Peng
- Division of Infectious Diseases, Allergy and Immunology and Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA; Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, MO 63104, USA.
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7
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Zhao Y, Liu X, Si F, Huang L, Gao A, Lin W, Hoft DF, Shao Q, Peng G. Citrate Promotes Excessive Lipid Biosynthesis and Senescence in Tumor Cells for Tumor Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2101553. [PMID: 34747157 PMCID: PMC8728847 DOI: 10.1002/advs.202101553] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 10/04/2021] [Indexed: 05/17/2023]
Abstract
Metabolic disorder is one of the hallmarks of cancers, and reprogramming of metabolism is becoming a novel strategy for cancer treatment. Citrate is a key metabolite and critical metabolic regulator linking glycolysis and lipid metabolism in cellular energy homeostasis. Here it is reported that citrate treatment (both sodium citrate and citric acid) significantly suppresses tumor cell proliferation and growth in various tumor types. Mechanistically, citrate promotes excessive lipid biosynthesis and induces disruption of lipid metabolism in tumor cells, resulting in tumor cell senescence and growth inhibition. Furthermore, ATM-associated DNA damage response cooperates with MAPK and mTOR signaling pathways to control citrate-induced tumor cell growth arrest and senescence. In vivo studies further demonstrate that citrate administration dramatically inhibits tumor growth and progression in a colon cancer xenograft model. Importantly, citrate administration combined with the conventional chemotherapy drugs exhibits synergistic antitumor effects in vivo in the colon cancer models. These results clearly indicate that citrate can reprogram lipid metabolism and cell fate in cancer cells, and targeting citrate can be a promising therapeutic strategy for tumor treatment.
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Affiliation(s)
- Yangjing Zhao
- Department of ImmunologyKey Laboratory of Medical Science and Laboratory Medicine of Jiangsu ProvinceSchool of MedicineJiangsu UniversityZhenjiang212013P. R. China
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
| | - Xia Liu
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
| | - Fusheng Si
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
| | - Lan Huang
- Department of ImmunologyKey Laboratory of Medical Science and Laboratory Medicine of Jiangsu ProvinceSchool of MedicineJiangsu UniversityZhenjiang212013P. R. China
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
| | - Aiqin Gao
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
| | - Wenli Lin
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
| | - Daniel F. Hoft
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
- Department of Molecular Microbiology & ImmunologySaint Louis University School of MedicineSaint LouisMO63104USA
| | - Qixiang Shao
- Department of ImmunologyKey Laboratory of Medical Science and Laboratory Medicine of Jiangsu ProvinceSchool of MedicineJiangsu UniversityZhenjiang212013P. R. China
| | - Guangyong Peng
- Division of Infectious DiseasesAllergy & Immunology and Department of Internal MedicineSaint Louis University School of MedicineSaint LouisMO63104USA
- Department of Molecular Microbiology & ImmunologySaint Louis University School of MedicineSaint LouisMO63104USA
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Zhang Y, Zhao H, Liu B, Shu H, Zhang L, Bao M, Yi W, Tan Y, Ji X, Zhang C, Zhao N, Pang G, He D, Wang Y, Li L, Yi J, Lu C. Human serum metabolomic analysis reveals progression for high blood pressure in type 2 diabetes mellitus. BMJ Open Diabetes Res Care 2021; 9:9/1/e002337. [PMID: 34711543 PMCID: PMC8557281 DOI: 10.1136/bmjdrc-2021-002337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 10/05/2021] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION Type 2 diabetes mellitus (T2DM) is one of the most ordinary metabolic disorders and manifests as a high blood sugar level; 80%-90% of patients with T2DM will develop high blood pressure (HBP), which exacerbates irreversible organ damage. Understanding the metabolic basis of HBP is essential to facilitating early diagnosis and prompt treatments of diabetic complications. RESEARCH DESIGN AND METHODS 34 patients who originally had T2DM and then developed HBP within 1 year were selected from physical examination participants. Using ultrahigh-performance liquid chromatography quadrupole time-of-flight metabolomic analysis, we compared the metabolomic profile of patients with 30 healthy controls. The results showed a clear discrimination in metabolomic profiles between T2DM and T2DM+HBP when employing orthogonal projection to latent structure with discriminant analysis with electrospray ionization modes. RESULTS Eight differential metabolites changed significantly during disease progression, among which L-isoleucine, L-glutamic acid, pyroglutamic acid and linoleic acid decreased, while sphinganine, Cer(d18:0/16:0), Cer(d18:0/18:0), and citric acid increased. These metabolites are associated with the γ-glutamyl cycle, tricarboxylic acid cycle, and ceramide metabolism. CONCLUSIONS These novel serum biomarkers may improve the management of T2DM and HBP complications, thus reducing the use of incorrect medical care.
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Affiliation(s)
- Yin Zhang
- China Academy of Chinese Medical Sciences, Beijing, China
- Yichun University, Yichun, Jiangxi, China
| | - Heru Zhao
- China Academy of Chinese Medical Sciences, Beijing, China
- Yichun University, Yichun, Jiangxi, China
| | - Bin Liu
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Haiyang Shu
- Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China
| | - Lulu Zhang
- China Academy of Chinese Medical Sciences, Beijing, China
- Yichun University, Yichun, Jiangxi, China
| | - Mei Bao
- China Academy of Chinese Medical Sciences, Beijing, China
- Yichun University, Yichun, Jiangxi, China
| | - Wenjun Yi
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Yong Tan
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Xinyu Ji
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Chi Zhang
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Ning Zhao
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Guoming Pang
- Traditional Chinese Medicine Hospital of Kaifeng, Kaifeng, China
| | - Dan He
- Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Yuexi Wang
- China Academy of Chinese Medical Sciences, Beijing, China
| | - Li Li
- China Academy of Chinese Medical Sciences, Beijing, China
| | | | - Cheng Lu
- China Academy of Chinese Medical Sciences, Beijing, China
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9
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Fan X, Zhou J, Yan X, Bi X, Liang J, Lu S, Luo L, Zhou D, Yin Z. Citrate activates autophagic death of prostate cancer cells via downregulation CaMKII/AKT/mTOR pathway. Life Sci 2021; 275:119355. [PMID: 33744326 DOI: 10.1016/j.lfs.2021.119355] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 01/08/2021] [Accepted: 03/09/2021] [Indexed: 12/19/2022]
Abstract
AIM The aim of this study was to explore the antitumor effect of citrate on prostate cancer and its underlying mechanism. MAIN METHODS CCK-8 and Colony formation assay were performed to detect the anti-proliferative effect of citrate on prostate cancer. Flow cytometry analysis was conducted to investigate the pro-apoptosis effect of citrate on prostate cancer. Immunofluorescence assay was taken to detect whether citrate induced autophagy in prostate cancer. Western blot and Immunohistochemical assay were performed to explore the underlying mechanism by which citrate activates autophagic death in prostate cancer cells. Xenograft tumorigenicity assay was conducted to explore whether citrate suppressed the growth of xenograft prostate tumors in vivo. KEY FINDINGS We found citrate could significantly induce apoptosis and autophagy of prostate cancer cells in vitro and in vivo. Furthermore, treatment with autophagy inhibitor (chloroquine) drastically suppresses the apoptosis rate of prostate cancer induced by citrate. Based on the Ca2+-chelating property of citrate, the further study suggested that citrate activates autophagic cell death in prostate cancer cells via downregulation CaMKII/AKT/mTOR pathway. Finally, citrate suppresses the growth of xenograft prostate tumors without remarkable toxicity in mice. SIGNIFICANCE Our study elucidated a novel molecular mechanism about the anti-cancer activities of citrate. That citrate activates autophagic cell death of prostate cancer via downregulation CaMKII/AKT/mTOR pathway and without remarkable toxicity in mice. This study suggests that citrate might be a promising therapeutic agent for the treatment of prostate cancer.
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Affiliation(s)
- Xirui Fan
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China
| | - Jinyi Zhou
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China
| | - Xintong Yan
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China
| | - Xiaowen Bi
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China
| | - Juanjuan Liang
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China
| | - Shuai Lu
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China
| | - Lan Luo
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, Jiangsu, People's Republic of China.
| | - Da Zhou
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, 200032 Shanghai, People's Republic of China.
| | - Zhimin Yin
- Jiangsu Province Key Laboratory for Molecular and Medical Biotechnology, College of Life Science, Nanjing Normal University, Nanjing, Jiangsu, People's Republic of China.
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10
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Elebo N, Fru P, Omoshoro-Jones J, Candy GP, Nweke EE. Role of different immune cells and metabolic pathways in modulating the immune response in pancreatic cancer (Review). Mol Med Rep 2020; 22:4981-4991. [PMID: 33174057 PMCID: PMC7646946 DOI: 10.3892/mmr.2020.11622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 09/16/2020] [Indexed: 02/07/2023] Open
Abstract
Pancreatic cancer is an aggressive cancer, making it a leading cause of cancer‑related deaths. It is characteristically resistant to treatment, which results in low survival rates. In pancreatic cancer, immune cells undergo transitions that can inhibit or promote their functions, enabling treatment resistance and tumor progression. These transitions can be fostered by metabolic pathways that are dysregulated during tumorigenesis. The present review aimed to summarize the different immune cells and their roles in pancreatic cancer. The review also highlighted the individual metabolic pathways in pancreatic cancer and how they enable transitions in immune cells. Finally, the potential of targeting metabolic pathways for effective therapeutic strategies was considered.
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Affiliation(s)
- Nnenna Elebo
- Department of Surgery, Faculty of Health Sciences, University of The Witwatersrand, Johannesburg, Gauteng 2193, South Africa
| | - Pascaline Fru
- Department of Surgery, Faculty of Health Sciences, University of The Witwatersrand, Johannesburg, Gauteng 2193, South Africa
| | - Jones Omoshoro-Jones
- Department of Surgery, Faculty of Health Sciences, University of The Witwatersrand, Johannesburg, Gauteng 2193, South Africa
| | - Geoffrey Patrick Candy
- Department of Surgery, Faculty of Health Sciences, University of The Witwatersrand, Johannesburg, Gauteng 2193, South Africa
| | - Ekene Emmanuel Nweke
- Department of Surgery, Faculty of Health Sciences, University of The Witwatersrand, Johannesburg, Gauteng 2193, South Africa
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11
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Shammugasamy B, Valtchev P, Dong Q, Dehghani F. Effect of citrus peel extracts on the cellular quiescence of prostate cancer cells. Food Funct 2019; 10:3727-3737. [PMID: 31169845 DOI: 10.1039/c9fo00455f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The re-entry of quiescent cancer cells to the cell cycle plays a key role in cancer recurrence, which can pose a high risk after primary treatment. Citrus peel extracts (CPEs) contain compounds that can potentially impair tumour growth; however the mechanism of action and effects on cell cycle regulation remain unclear. In this study, the capacity of an ethyl acetate : hexane extract (CPE/hexane) and water extract (CPE/water) to modulate the cell cycle re-entry of quiescent (PC-3 and LNCaP) prostate cancer cells was tested in an in vitro culture system. Cell cycle analysis showed that the quiescent PC-3 and LNCaP cancer cells in the presence of CPE/water were impaired in their ability to enter the S phase where only 2-3% reduction of G0/G1 cells was noted compared to 12-18% reduction of control cells. In contrast, the CPE/hexane did not show any cell cycle inhibition activity in both cell lines. A low DNA synthesis rate and weak apoptosis were observed in quiescent cancer cells treated with CPEs. Hesperidin and narirutin, the predominant flavonoids found in citrus fruits, were not responsible for the observed biological activity, implicating alternative bioactive compounds. Notably, citric acid was identified as one of the compounds present in CPEs that acts as a cell cycle re-entry inhibitor. Citric acid exhibited a higher cell toxicity effect on PC-3 prostate cancer cells than non-cancerous RWPE-1 prostate cells, suggesting specific benefits for cancer treatment. In conclusion, CPE containing citric acid together with various bioactive compounds may be used as a chemopreventive agent for post-therapy cancer patients.
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12
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Huang L, Wang C, Xu H, Peng G. Targeting citrate as a novel therapeutic strategy in cancer treatment. Biochim Biophys Acta Rev Cancer 2019; 1873:188332. [PMID: 31751601 DOI: 10.1016/j.bbcan.2019.188332] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 01/09/2023]
Abstract
An important feature shared by many cancer cells is drastically altered metabolism that is critical for rapid growth and proliferation. The distinctly reprogrammed metabolism in cancer cells makes it possible to manipulate the levels of metabolites for cancer treatment. Citrate is a key metabolite that bridges many important metabolic pathways. Recent studies indicate that manipulating the level of citrate can impact the behaviors of both cancer and immune cells, resulting in induction of cancer cell apoptosis, boosting immune responses, and enhanced cancer immunotherapy. In this review, we discuss the recent developments in this emerging area of targeting citrate in cancer treatment. Specifically, we summarize the molecular basis of altered citrate metabolism in both tumors and immune cells, explore the seemingly conflicted growth promoting and growth inhibiting roles of citrate in various tumors, discuss the use of citrate in the clinic as a novel biomarker for cancer progression and outcomes, and highlight the new development of combining citrate with other therapeutic strategies in cancer therapy. An improved understanding of complex roles of citrate in the suppressive tumor microenvironment should open new avenues for cancer therapy.
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Affiliation(s)
- Lan Huang
- Division of Infectious Diseases, Allergy & Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA; Department of Immunology, Jiangsu University School of Medicine, Zhenjiang 212013, PR China
| | - Cindy Wang
- Division of Infectious Diseases, Allergy & Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Huaxi Xu
- Department of Immunology, Jiangsu University School of Medicine, Zhenjiang 212013, PR China
| | - Guangyong Peng
- Division of Infectious Diseases, Allergy & Immunology, Department of Internal Medicine, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA.
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13
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Caiazza C, D'Agostino M, Passaro F, Faicchia D, Mallardo M, Paladino S, Pierantoni GM, Tramontano D. Effects of Long-Term Citrate Treatment in the PC3 Prostate Cancer Cell Line. Int J Mol Sci 2019; 20:ijms20112613. [PMID: 31141937 PMCID: PMC6600328 DOI: 10.3390/ijms20112613] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/22/2019] [Accepted: 05/23/2019] [Indexed: 01/18/2023] Open
Abstract
Acute administration of a high level of extracellular citrate displays an anti-proliferative effect on both in vitro and in vivo models. However, the long-term effect of citrate treatment has not been investigated yet. Here, we address this question in PC3 cells, a prostate-cancer-derived cell line. Acute administration of high levels of extracellular citrate impaired cell adhesion and inhibited the proliferation of PC3 cells, but surviving cells adapted to grow in the chronic presence of 20 mM citrate. Citrate-resistant PC3 cells are significantly less glycolytic than control cells. Moreover, they overexpress short-form, citrate-insensitive phosphofructokinase 1 (PFK1) together with full-length PFK1. In addition, they show traits of mesenchymal-epithelial transition: an increase in E-cadherin and a decrease in vimentin. In comparison with PC3 cells, citrate-resistant cells display morphological changes that involve both microtubule and microfilament organization. This was accompanied by changes in homeostasis and the organization of intracellular organelles. Thus, the mitochondrial network appears fragmented, the Golgi complex is scattered, and the lysosomal compartment is enlarged. Interestingly, citrate-resistant cells produce less total ROS but accumulate more mitochondrial ROS than control cells. Consistently, in citrate-resistant cells, the autophagic pathway is upregulated, possibly sustaining their survival. In conclusion, chronic administration of citrate might select resistant cells, which could jeopardize the benefits of citrate anticancer treatment.
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Affiliation(s)
- Carmen Caiazza
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Massimo D'Agostino
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Fabiana Passaro
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Deriggio Faicchia
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Simona Paladino
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Giovanna Maria Pierantoni
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
| | - Donatella Tramontano
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy.
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14
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Ren JG, Seth P, Ye H, Guo K, Hanai JI, Husain Z, Sukhatme VP. Citrate Suppresses Tumor Growth in Multiple Models through Inhibition of Glycolysis, the Tricarboxylic Acid Cycle and the IGF-1R Pathway. Sci Rep 2017; 7:4537. [PMID: 28674429 PMCID: PMC5495754 DOI: 10.1038/s41598-017-04626-4] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/17/2017] [Indexed: 01/08/2023] Open
Abstract
In this study we have tested the efficacy of citrate therapy in various cancer models. We found that citrate administration inhibited A549 lung cancer growth and additional benefit accrued in combination with cisplatin. Interestingly, citrate regressed Ras-driven lung tumors. Further studies indicated that citrate induced tumor cell differentiation. Additionally, citrate treated tumor samples showed significantly higher infiltrating T-cells and increased blood levels of numerous cytokines. Moreover, we found that citrate inhibited IGF-1R phosphorylation. In vitro studies suggested that citrate treatment inhibited AKT phosphorylation, activated PTEN and increased expression of p-eIF2a. We also found that p-eIF2a was decreased when PTEN was depleted. These data suggest that citrate acts on the IGF-1R-AKT-PTEN-eIF2a pathway. Additionally, metabolic profiling suggested that both glycolysis and the tricarboxylic acid cycle were suppressed in a similar manner in vitro in tumor cells and in vivo but only in tumor tissue. We reproduced many of these observations in an inducible Her2/Neu-driven breast cancer model and in syngeneic pancreatic tumor (Pan02) xenografts. Our data suggests that citrate can inhibit tumor growth in diverse tumor types and via multiple mechanisms. Dietary supplementation with citrate may be beneficial as a cancer therapy.
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Affiliation(s)
- Jian-Guo Ren
- Divisions of Interdisciplinary Medicine and Biotechnology, Hematology-Oncology and Nephrology, Department of Medicine and the Cancer Research Institute, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Pankaj Seth
- Divisions of Interdisciplinary Medicine and Biotechnology, Hematology-Oncology and Nephrology, Department of Medicine and the Cancer Research Institute, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Huihui Ye
- Department of Pathology, Beth Israel Deaconess Medical Center (BIDMC) and Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Kun Guo
- Divisions of Interdisciplinary Medicine and Biotechnology, Hematology-Oncology and Nephrology, Department of Medicine and the Cancer Research Institute, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA.,Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jun-Ichi Hanai
- Divisions of Interdisciplinary Medicine and Biotechnology, Hematology-Oncology and Nephrology, Department of Medicine and the Cancer Research Institute, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Zaheed Husain
- Divisions of Interdisciplinary Medicine and Biotechnology, Hematology-Oncology and Nephrology, Department of Medicine and the Cancer Research Institute, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA
| | - Vikas P Sukhatme
- Divisions of Interdisciplinary Medicine and Biotechnology, Hematology-Oncology and Nephrology, Department of Medicine and the Cancer Research Institute, Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA.
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15
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Chen X, Lv Q, Liu Y, Deng W. Effect of Food Additive Citric Acid on The Growth of Human Esophageal Carcinoma Cell Line EC109. CELL JOURNAL 2016; 18:493-502. [PMID: 28042534 PMCID: PMC5086328 DOI: 10.22074/cellj.2016.4716] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 02/23/2016] [Indexed: 12/13/2022]
Abstract
Objective Today, esophageal cancer (EC) has become one of the most common cancer
types in China. Therefore, new drug and therapeutic strategies are urgently needed to
improve postoperative survival rate of patients with EC. As a food additive, several lines
of evidence have shown that citric acid can be served as glycolysis suppressor to inhibit
growth of some tumor cells. However, little is known about the effect of this organic acid
on the growth of human esophageal carcinoma cell line, EC109.
Materials and Methods In this experimental study, cell proliferation rate was determined
using MTT assay. Apoptotic morphological changes were evaluated by fluorescent
microscopy using Hoechst 33258 staining. Cell apoptosis rate and mitochondrial membrane
potential (MMP) were detected using flow-cytometry. Effect of citric acid on cellular
membrane permeability was assessed by measuring lactate dehydrogenase (LDH) activity,
using LDH assay kit.
Results Compared to the control group, there was a marked decrease in cells proliferation when the cells were treated with higher citric acid concentrations (800, 1600 μg/ml).
Typical apoptotic morphology of EC109 cells was observed upon treatment with citric acid,
such as chromatin condensation and appearance of apoptotic body. Cell apoptotic indexes were significantly increased (P<0.01) after treatment with citric acid at the concentration of 400-1600 μg/ml. Extracellular LDH activity and loss of MMP in all of the treated
groups were significantly higher than control (P<0.05), in a dose-dependent manner.
Conclusion These results suggest that citric acid prevents EC109 cell growth by inhibiting cell proliferation and inducing apoptosis, which perhaps offers some theoretical guidance for its application in EC treatment.
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Affiliation(s)
- Xiaoguang Chen
- Animal Science and Technology School, Henan University of Science and Technology, Luoyang, China
| | - Qiongxia Lv
- Animal Science and Technology School, Henan University of Science and Technology, Luoyang, China
| | - Yumei Liu
- Animal Science and Technology School, Henan University of Science and Technology, Luoyang, China
| | - Wen Deng
- Animal Science and Technology School, Henan University of Science and Technology, Luoyang, China
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16
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3-Bromopyruvate and sodium citrate induce apoptosis in human gastric cancer cell line MGC-803 by inhibiting glycolysis and promoting mitochondria-regulated apoptosis pathway. Biochem Biophys Res Commun 2016; 475:37-43. [PMID: 27163639 DOI: 10.1016/j.bbrc.2016.04.151] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 04/27/2016] [Indexed: 11/20/2022]
Abstract
Cancer cells are mainly dependent on glycolysis to generate adenosine triphosphate (ATP) and intermediates required for cell growth and proliferation. Thus, inhibition of glycolysis might be of therapeutic value in antitumor treatment. Our previously studies had found that both 3-bromopyruvate (BP) and sodium citrate (SCT) can inhibit tumor growth and proliferation in vitro and in vivo. However, the mechanism involved in the BP and SCT mediated antitumor activity is not entirely clear. In this work, it is demonstrated that BP inhibits the enzyme hexokinase (HK) activity and SCT suppresses the phosphofructokinase (PFK) activity respectively, both the two agents decrease viability, ATP generation and lactate content in the human gastric cancer cell line MGC-803. These effects are directly correlated with blockage of glycolysis. Furthermore, BP and SCT can induce the characteristic manifestations of mitochondria-regulated apoptosis, such as down-regulation of anti-apoptosis proteins Bcl-2 and Survivin, up-regulation of pro-apoptosis protein Bax, activation of caspase-3, as well as leakage of cytochrome c (Cyt-c). In summary, our results provided evidences that BP and SCT inhibit the MGC-803 cells growth and proliferation might be correlated with inhibiting glycolysis and promoting mitochondria-regulated apoptosis.
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17
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Chen X, Deng W, Liu Y, Lv Q. Study of antagonism of citric acid on aluminum-induced toxicity in mice testis cells. Mol Cell Toxicol 2015. [DOI: 10.1007/s13273-014-0049-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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18
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Peixoto RCA, Miranda-Vilela AL, de Souza Filho J, Carneiro MLB, Oliveira RGS, da Silva MO, de Souza AR, Báo SN. Antitumor effect of free rhodium (II) citrate and rhodium (II) citrate-loaded maghemite nanoparticles on mice bearing breast cancer: a systemic toxicity assay. Tumour Biol 2014; 36:3325-36. [PMID: 25528215 PMCID: PMC4445484 DOI: 10.1007/s13277-014-2966-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 12/08/2014] [Indexed: 11/28/2022] Open
Abstract
Breast cancer is one of the most prevalent cancer types among women. The use of magnetic fluids for specific delivery of drugs represents an attractive platform for chemotherapy. In our previous studies, it was demonstrated that maghemite nanoparticles coated with rhodium (II) citrate (Magh-Rh2Cit) induced in vitro cytotoxicity and in vivo antitumor activity, followed by intratumoral administration in breast carcinoma cells. In this study, our aim was to follow intravenous treatment to evaluate the systemic antitumor activity and toxicity induced by these formulations in Balb/c mice bearing orthotopic 4T1 breast carcinoma. Female Balb/c mice were evaluated with regard to toxicity of intravenous treatments through analyses of hemogram, serum levels of alanine aminotransferase, iron, and creatinine and liver, kidney, and lung histology. The antitumor activity of rhodium (II) citrate (Rh2Cit), Magh-Rh2Cit, and maghemite nanoparticles coated with citrate (Magh-Cit), used as control, was evaluated by tumor volume reduction, histology, and morphometric analysis. Magh-Rh2Cit and Magh-Cit promoted a significant decrease in tumor area, and no experimental groups presented hematotoxic effects or increased levels of serum ALT and creatinine. This observation was corroborated by the histopathological examination of the liver and kidney of mice. Furthermore, the presence of nanoparticles was verified in lung tissue with no morphological changes, supporting the idea that our nanoformulations did not induce toxicity effects. No studies about the systemic action of rhodium (II) citrate-loaded maghemite nanoparticles have been carried out, making this report a suitable starting point for exploring the therapeutic potential of these compounds in treating breast cancer.
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19
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Xie RL, Jang YJ, Xing L, Zhang BF, Wang FZ, Cui PF, Cho MH, Jiang HL. A novel potential biocompatible hyperbranched polyspermine for efficient lung cancer gene therapy. Int J Pharm 2014; 478:19-30. [PMID: 25448566 DOI: 10.1016/j.ijpharm.2014.11.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 11/04/2014] [Accepted: 11/07/2014] [Indexed: 11/19/2022]
Abstract
The clinical successful application of gene therapy critically depends upon the development of non-toxic and efficient delivery system. Although polycationic non-viral vectors hold great promise in nanomedicine, the exploring of application in clinics still remains a big challenge. To develop a non-toxic and efficient non-viral gene delivery system, two kinds of endogenous substance, citric acid (CA) and spermine (SPE), were used to prepare a new low charge density hyperbranched polyspermine (HPSPE) by one-pot polymerization. The biocompatibility evaluated by hemolytic activity and red blood cell (RBC) aggregation indicated that HPSPE was highly biocompatible without causing hemolysis and RBC aggregation compared with PEI as well as SPE. The MTS assay also demonstrated that the cell viability of HPSPE was above 90% even at 200 μg/mL at different time (24 and 72 h), which much higher than PEI 25K. Besides, HPSPE showed high transfection efficiency without any toxic effect after aerosol delivery to the mice. Moreover, aerosol delivery of HPSPE/Akt1 shRNA significantly reduced tumor size and numbers and efficiently suppressed lung tumorigenesis ultimately in K-ras(LA1) lung cancer model mice. These results suggest that low charge density as well as endogenous substance skeleton endow HPSPE with great potential for toxicity-free and efficient gene therapy.
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Affiliation(s)
- Rong-Lin Xie
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Yoon-Jeong Jang
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, South Korea
| | - Lei Xing
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Bing-Feng Zhang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Feng-Zhen Wang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Peng-Fei Cui
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Myung-Haing Cho
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 151-742, South Korea; Graduate School of Convergence Science and Technology, Seoul National University, Suwon 443-270, South Korea; Graduate Group of Tumor Biology, Seoul National University, Seoul 151-742, South Korea; Advanced Institute of Convergence Technology, Seoul National University, Suwon 443-270, South Korea.
| | - Hu-Lin Jiang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
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20
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Kruspig B, Zhivotovsky B, Gogvadze V. Mitochondrial substrates in cancer: drivers or passengers? Mitochondrion 2014; 19 Pt A:8-19. [PMID: 25179741 DOI: 10.1016/j.mito.2014.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 08/26/2014] [Indexed: 01/20/2023]
Abstract
The majority of cancers demonstrate various tumor-specific metabolic aberrations, such as increased glycolysis even under aerobic conditions (Warburg effect), whereas mitochondrial metabolic activity and their contribution to cellular energy production are restrained. One of the most important mechanisms for this metabolic switch is the alteration in the abundance, utilization, and localization of various mitochondrial substrates. Numerous lines of evidence connect disturbances in mitochondrial metabolic pathways with tumorigenesis and provide an intriguing rationale for utilizing mitochondria as targets for anti-cancer therapy.
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Affiliation(s)
- Björn Kruspig
- Division of Toxicology, Institute of Environmental Medicine Karolinska Institutet, Box 210 171 77 Stockholm, Sweden
| | - Boris Zhivotovsky
- Division of Toxicology, Institute of Environmental Medicine Karolinska Institutet, Box 210 171 77 Stockholm, Sweden; MV Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Vladimir Gogvadze
- Division of Toxicology, Institute of Environmental Medicine Karolinska Institutet, Box 210 171 77 Stockholm, Sweden; MV Lomonosov Moscow State University, 119991 Moscow, Russia.
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21
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Kruspig B, Nilchian A, Orrenius S, Zhivotovsky B, Gogvadze V. Citrate kills tumor cells through activation of apical caspases. Cell Mol Life Sci 2012; 69:4229-37. [PMID: 23052210 PMCID: PMC11115039 DOI: 10.1007/s00018-012-1166-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2012] [Revised: 08/13/2012] [Accepted: 09/10/2012] [Indexed: 12/29/2022]
Abstract
Most tumor cells exhibit a glycolytic phenotype. Thus, inhibition of glycolysis might be of therapeutic value in antitumor treatment. Among the agents that can suppress glycolysis is citrate, a member of the Krebs cycle and an inhibitor of phosphofructokinase. Here, we show that citrate can trigger cell death in multiple cancer cell lines. The lethal effect of citrate was found to be related to the activation of apical caspases-8 and -2, rather than to the inhibition of cellular energy metabolism. Hence, increasing concentrations of citrate induced characteristic manifestations of apoptosis, such as caspase-3 activation, and poly-ADP-ribose polymerase cleavage, as well as the release of cytochrome c. Apoptosis induction did not involve the receptor-mediated pathway, since the processing of caspase-8 was not attenuated in cells deficient in Fas-associated protein with Death Domain. We propose that the activation of apical caspases by citrate could be explained by its kosmotropic properties. Caspase-8 is activated by proximity-induced dimerization, which might be facilitated by citrate through the stabilization of intermolecular interactions between the proteins.
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Affiliation(s)
- Björn Kruspig
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
| | - Azadeh Nilchian
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
| | - Sten Orrenius
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
| | - Boris Zhivotovsky
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
- MV Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Vladimir Gogvadze
- Division of Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, 171 77 Stockholm, Sweden
- MV Lomonosov Moscow State University, 119991 Moscow, Russia
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22
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Granchi C, Minutolo F. Anticancer agents that counteract tumor glycolysis. ChemMedChem 2012; 7:1318-50. [PMID: 22684868 PMCID: PMC3516916 DOI: 10.1002/cmdc.201200176] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/04/2012] [Indexed: 12/12/2022]
Abstract
Can we consider cancer to be a "metabolic disease"? Tumors are the result of a metabolic selection, forming tissues composed of heterogeneous cells that generally express an overactive metabolism as a common feature. In fact, cancer cells have increased needs for both energy and biosynthetic intermediates to support their growth and invasiveness. However, their high proliferation rate often generates regions that are insufficiently oxygenated. Therefore, their carbohydrate metabolism must rely mostly on a glycolytic process that is uncoupled from oxidative phosphorylation. This metabolic switch, also known as the Warburg effect, constitutes a fundamental adaptation of tumor cells to a relatively hostile environment, and supports the evolution of aggressive and metastatic phenotypes. As a result, tumor glycolysis may constitute an attractive target for cancer therapy. This approach has often raised concerns that antiglycolytic agents may cause serious side effects toward normal cells. The key to selective action against cancer cells can be found in their hyperbolic addiction to glycolysis, which may be exploited to generate new anticancer drugs with minimal toxicity. There is growing evidence to support many glycolytic enzymes and transporters as suitable candidate targets for cancer therapy. Herein we review some of the most relevant antiglycolytic agents that have been investigated thus far for the treatment of cancer.
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Affiliation(s)
- Carlotta Granchi
- Dipartimento di Scienze Farmaceutiche, Università di Pisa, Via Bonanno 6, 56126 Pisa (Italy)
| | - Filippo Minutolo
- Dipartimento di Scienze Farmaceutiche, Università di Pisa, Via Bonanno 6, 56126 Pisa (Italy)
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23
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El Sayed SM, El-Magd RMA, Shishido Y, Yorita K, Chung SP, Tran DH, Sakai T, Watanabe H, Kagami S, Fukui K. D-Amino acid oxidase-induced oxidative stress, 3-bromopyruvate and citrate inhibit angiogenesis, exhibiting potent anticancer effects. J Bioenerg Biomembr 2012; 44:513-23. [PMID: 22802136 DOI: 10.1007/s10863-012-9455-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 05/29/2012] [Indexed: 11/30/2022]
Abstract
Angiogenesis is critical for cancer growth and metastasis. Steps of angiogenesis are energy consuming, while vascular endothelial cells are highly glycolytic. Glioblastoma multiforme (GBM) is a highly vascular tumor and this enhances its aggressiveness. D-amino acid oxidase (DAO) is a promising therapeutic protein that induces oxidative stress upon acting on its substrates. Oxidative stress-energy depletion (OSED) therapy was recently reported (El Sayed et al., Cancer Gene Ther, 19, 1-18, 2012). OSED combines DAO-induced oxidative stress with energy depletion caused by glycolytic inhibitors such as 3-bromopyruvate (3BP), a hexokinase II inhibitor that depleted ATP in cancer cells and induced production of hydrogen peroxide. 3BP disturbs the Warburg effect and antagonizes effects of lactate and pyruvate (El Sayed et al., J Bioenerg Biomembr, 44, 61-79, 2012). Citrate is a natural organic acid capable of inhibiting glycolysis by targeting phosphofructokinase. Here, we report that DAO, 3BP and citrate significantly inhibited angiogenesis, decreased the number of vascular branching points and shortened the length of vascular tubules. OSED delayed the growth of C6/DAO glioma cells. 3BP combined with citrate delayed the growth of C6 glioma cells and decreased significantly the number and size of C6 glioma colonies in soft agar. Human GBM cells (U373MG) were resistant to chemotherapy e.g. cisplatin and cytosine arabinoside, while 3BP was effective in decreasing the viability and disturbing the morphology of U373MG cells.
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Affiliation(s)
- S M El Sayed
- Division of Enzyme Pathophysiology, The Institute for Enzyme Research (KOSOKEN), The University of Tokushima, Kuramoto-cho, Tokushima, Japan
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El Sayed SM, El-Magd RMA, Shishido Y, Chung SP, Diem TH, Sakai T, Watanabe H, Kagami S, Fukui K. 3-Bromopyruvate antagonizes effects of lactate and pyruvate, synergizes with citrate and exerts novel anti-glioma effects. J Bioenerg Biomembr 2012; 44:61-79. [DOI: 10.1007/s10863-012-9409-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Accepted: 01/11/2012] [Indexed: 01/08/2023]
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Abstract
Cancer is classically considered as a genetic and, more recently, epigenetic multistep disease. Despite seminal studies in the 1920s by Warburg showing a characteristic metabolic pattern for tumors, cancer bioenergetics has often been relegated to the backwaters of cancer biology. This review aims to provide a historical account on cancer metabolism research, and to try to integrate and systematize the metabolic strategies in which cancer cells engage to overcome selective pressures during their inception and evolution. Implications of this renovated view on some common concepts and in therapeutics are also discussed.
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Affiliation(s)
- L M R Ferreira
- Life Sciences Department, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal.
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Bucay AH. Clinical report: a patient with primary peritoneal mesothelioma that has improved after taking citric acid orally. Clin Res Hepatol Gastroenterol 2011; 35:241. [PMID: 21345759 DOI: 10.1016/j.clinre.2010.12.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Accepted: 12/03/2010] [Indexed: 02/04/2023]
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