101
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Wen X, Zhao WH, Chen LZ, Qu W, Liu HX, Yan HY, Hou LF, Ping J. Attenuated cholesterol metabolism pathway suppresses regulatory T cell development in prenatal nicotine exposed female mice. Toxicology 2019; 428:152309. [PMID: 31629012 DOI: 10.1016/j.tox.2019.152309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/10/2019] [Accepted: 10/15/2019] [Indexed: 12/21/2022]
Abstract
The recession of regulatory T cells (Tregs) contributes to development of autoimmune disease. Our previous study suggested that prenatal nicotine exposure (PNE) inhibited Tregs frequency in offspring, but the mechanisms are still uncertain. This study aimed to explore the molecular mechanisms of PNE-induced Tregs inhibition from the perspective of cellular cholesterol homeostasis both in vivo and in vitro. PNE mice model were established by 3 mg/kg/d nicotine administration in Balb/c strain from gestational day (GD) 9 to GD 18. The results showed that PNE significantly decreased thymic Tregs frequency in neonatal offspring. The activation of mTOR and downregulation of p-STAT5/Foxp3 pathway of Tregs were observed in PNE offspring. Mechanism study found that PNE elevated ATP-binding cassette transporter G1 (ABCG1) expression and decreased intracellular cholesterol content of Tregs in offspring, indicating impaired intracellular cholesterol homeostasis. Similar results were observed in 1 μM nicotine-treated primary thymocytes in vitro. Further, cholesterol-replenishment can abrogate nicotine-induced mTOR activation and the following suppression of p-STAT5/Foxp3 pathway and Tregs frequency. In addition, Abcg1 siRNA transfection can partly reverse the nicotine-decreased intracellular cholesterol content and cell frequency of Tregs. In conclusion, this study showed that PNE could suppress Tregs development in female mice by up-regulating ABCG1-dependent cholesterol efflux, and suggested that PNE-induced thymic Tregs recession of offspring at early life was the developmental origin mechanism of immune dysfunction in later life.
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Affiliation(s)
- Xiao Wen
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Wen-Hao Zhao
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Lan-Zhou Chen
- Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University School of Resource and Environmental Sciences, Wuhan, 430079, China
| | - Wen Qu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Han-Xiao Liu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Hui-Yi Yan
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Li-Fang Hou
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Jie Ping
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China.
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102
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Liang L, Li J, Fu H, Liu X, Liu P. Identification of High Serum Apolipoprotein A1 as a Favorable Prognostic Indicator in Patients with Multiple Myeloma. J Cancer 2019; 10:4852-4859. [PMID: 31598156 PMCID: PMC6775509 DOI: 10.7150/jca.31357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 08/14/2019] [Indexed: 12/13/2022] Open
Abstract
This study is to explore the prognostic significance of serum lipid profiles in patients with multiple myeloma (MM). The study retrospectively enrolled 307 MM patients in Zhongshan Hospital, Shanghai, China, from 2007 to 2016. We evaluated the prognostic significance of the pre-diagnostic serum lipid profile [cholesterol, triglyceride, low-density lipoprotein (LDL), high-density lipoprotein (HDL), Apolipoprotein A1 (Apo A1) and Apolipoprotein B (Apo B)]. Prognostic factors identified through univariate and multivariate analysis were used to construct a new model based on Lasso Cox regression. Results indicated that lipid levels showed significant difference between ISS stages: Apo A1, Apo B, Cholesterol and LDL levels were lower in late ISS stage. However, only Apo A1 showed statistically significance in overall survival (OS), progression free survival (PFS) and cause specific survival (CSS) (P=0.038, P=0.028, P=0.011) in univariate Cox regression. Patients with higher Apo A1 displayed longer OS (median OS, 67 months vs. 30 months; P<0.001). Also, Apo A1 was revealed to be an independent prognostic indicator through multivariate analysis. Combining the Apo A1 level, Zhongshan Score model was constructed with Lasso regression for prognosis prediction. This model exhibited higher accuracy than International Staging System (ISS) and Durie and Salmon (DS) system. In conclusion, among all the serum lipid profiles, serum Apo A1 is a powerful prognostic indicator for patients with MM.
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Affiliation(s)
- Lifan Liang
- Department of Hematology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jing Li
- Department of Hematology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hangcheng Fu
- Fudan University Shanghai Cancer Center, Shanghai, China
| | - Xinyang Liu
- Department of Hematology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Peng Liu
- Department of Hematology, Zhongshan Hospital, Fudan University, Shanghai, China
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103
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Apolipoprotein A-I (ApoA-I), Immunity, Inflammation and Cancer. Cancers (Basel) 2019; 11:cancers11081097. [PMID: 31374929 PMCID: PMC6721368 DOI: 10.3390/cancers11081097] [Citation(s) in RCA: 118] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/25/2019] [Accepted: 07/30/2019] [Indexed: 12/21/2022] Open
Abstract
Apolipoprotein A-I (ApoA-I), the major protein component of high-density lipoproteins (HDL) is a multifunctional protein, involved in cholesterol traffic and inflammatory and immune response regulation. Many studies revealing alterations of ApoA-I during the development and progression of various types of cancer suggest that serum ApoA-I levels may represent a useful biomarker contributing to better estimation of cancer risk, early cancer diagnosis, follow up, and prognosis stratification of cancer patients. In addition, recent in vitro and animal studies disclose a more direct, tumor suppressive role of ApoA-I in cancer pathogenesis, which involves anti-inflammatory and immune-modulatory mechanisms. Herein, we review recent epidemiologic, clinicopathologic, and mechanistic studies investigating the role of ApoA-I in cancer biology, which suggest that enhancing the tumor suppressive activity of ApoA-I may contribute to better cancer prevention and treatment.
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104
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Thioredoxin-1 promotes macrophage reverse cholesterol transport and protects liver from steatosis. Biochem Biophys Res Commun 2019; 516:1103-1109. [PMID: 31280865 DOI: 10.1016/j.bbrc.2019.06.109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 06/19/2019] [Indexed: 12/22/2022]
Abstract
Atherosclerosis is characterized by the accumulation of excess cholesterol in plaques. Reverse cholesterol transport (RCT) plays a key role in the removal of cholesterol. In the present study, we examined the effect of thioredoxin-1 (Trx-1) on RCT and explored the underlying mechanism. We found that Trx-1 promoted RCT in vivo, as did T0901317, a known liver X receptor (LXR) ligand. T0901317 also inhibited the development of atherosclerotic plaques but promoted liver steatosis. Furthermore, Trx-1 promoted macrophage cholesterol efflux to apoAI in vitro. Mechanistically, Trx-1 promoted nuclear translocation of LXRα and induced the expression of ATP-binding cassette transporter A1 (ABCA1). Apolipoprotein E knockout (apoE-/-) mice fed an atherogenic diet were daily injected intraperitoneally with saline or Trx-1 (0.33 mg/kg). Trx-1 treatment significantly inhibited the development of atherosclerosis and induced the expression of ABCA1 in macrophages retrieved from apoE-/- mice. Moreover, the liver steatosis was attenuated by Trx-1. Overall, we demonstrated that Trx-1 promotes RCT by upregulating ABCA1 expression through induction of nuclear translocation of LXRα, and protects liver from steatosis.
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105
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Sharma B, Agnihotri N. Role of cholesterol homeostasis and its efflux pathways in cancer progression. J Steroid Biochem Mol Biol 2019; 191:105377. [PMID: 31063804 DOI: 10.1016/j.jsbmb.2019.105377] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 04/09/2019] [Accepted: 05/04/2019] [Indexed: 12/27/2022]
Abstract
Tumor cells show high avidity for cholesterol in order to support their inherent nature to divide and proliferate. This results in the rewiring of cholesterol homeostatic pathways by influencing not only de novo synthesis but also uptake or efflux pathways of cholesterol. Recent findings have pointed towards the importance of cholesterol efflux in tumor pathogenesis. Cholesterol efflux is the first and foremost step in reverse cholesterol transport and any perturbation in this pathway may lead to the accumulation of intracellular cholesterol, thereby altering the cellular equilibrium. This review addresses the different mechanisms of cholesterol efflux from the cell and highlights their role and regulation in context to tumor development. There are four different routes by which cholesterol can be effluxed from the cell namely, 1) passive diffusion of cholesterol to mature HDL particles, 2) SR-B1 mediated facilitated diffusion, 3) Active efflux to apo A1 via ABCA1 and 4) ABCG1 mediated efflux to mature HDL. These molecular players facilitating cholesterol efflux are engaged in a complex interplay with different signaling pathways. Thus, an understanding of the efflux pathways, their regulation and cross-talk with signaling molecules may provide novel prognostic markers and therapeutic targets to combat the onset of carcinogenesis.
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Affiliation(s)
- Bhoomika Sharma
- Department of Biochemistry, BMS-Block II, Panjab University, Sector-25, Chandigarh, 160014, India.
| | - Navneet Agnihotri
- Department of Biochemistry, BMS-Block II, Panjab University, Sector-25, Chandigarh, 160014, India.
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106
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Abstract
The pro-tumoral diversion of macrophages remains an unresolved paradox of tumor immunology and a conceptual gap in the understanding of tumor biology. Goossens et al. (2019) identify a new level of cross-regulation by which tumors increase the membrane cholesterol efflux of macrophages to enhance their pro-tumoral activation in response to IL-4.
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Affiliation(s)
- Antonio Sica
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", via Bovio 6, Novara, Italy; Humanitas Clinical and Research Center, Via Manzoni 56, 20089 Rozzano, Milan, Italy.
| | - Augusto Bleve
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", via Bovio 6, Novara, Italy; Center for Translational Research on Autoimmune and Allergic Diseases (CAAD), University of Piemonte Orientale, Novara, Italy
| | - Marina Chiara Garassino
- Thoracic Oncology Unit, Medical Oncology Department 1, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
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107
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Goossens P, Rodriguez-Vita J, Etzerodt A, Masse M, Rastoin O, Gouirand V, Ulas T, Papantonopoulou O, Van Eck M, Auphan-Anezin N, Bebien M, Verthuy C, Vu Manh TP, Turner M, Dalod M, Schultze JL, Lawrence T. Membrane Cholesterol Efflux Drives Tumor-Associated Macrophage Reprogramming and Tumor Progression. Cell Metab 2019; 29:1376-1389.e4. [PMID: 30930171 DOI: 10.1016/j.cmet.2019.02.016] [Citation(s) in RCA: 258] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 01/01/2019] [Accepted: 02/26/2019] [Indexed: 10/27/2022]
Abstract
Macrophages possess intrinsic tumoricidal activity, yet tumor-associated macrophages (TAMs) rapidly adopt an alternative phenotype within the tumor microenvironment that is marked by tumor-promoting immunosuppressive and trophic functions. The mechanisms that promote such TAM polarization remain poorly understood, but once identified, they may represent important therapeutic targets to block the tumor-promoting functions of TAMs and restore their anti-tumor potential. Here, we have characterized TAMs in a mouse model of metastatic ovarian cancer. We show that ovarian cancer cells promote membrane-cholesterol efflux and depletion of lipid rafts from macrophages. Increased cholesterol efflux promoted IL-4-mediated reprogramming, including inhibition of IFNγ-induced gene expression. Genetic deletion of ABC transporters, which mediate cholesterol efflux, reverts the tumor-promoting functions of TAMs and reduces tumor progression. These studies reveal an unexpected role for membrane-cholesterol efflux in driving TAM-mediated tumor progression while pointing to a potentially novel anti-tumor therapeutic strategy.
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Affiliation(s)
- Pieter Goossens
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France; Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University, 6229HX Maastricht, the Netherlands
| | - Juan Rodriguez-Vita
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France; Vascular Signaling and Cancer (A270), German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Anders Etzerodt
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France; Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark
| | - Marion Masse
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France
| | - Olivia Rastoin
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France
| | - Victoire Gouirand
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France
| | - Thomas Ulas
- Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn 53115, Germany; PRECISE Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases and University of Bonn, Bonn 53127, Germany
| | - Olympia Papantonopoulou
- Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn 53115, Germany
| | - Miranda Van Eck
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Universiteit Leiden, 2300 Leiden, the Netherlands
| | | | - Magali Bebien
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France
| | | | | | - Martin Turner
- Laboratory of Lymphocyte Signaling and Development, The Babraham Institute, Cambridge CB22 3AT, UK
| | - Marc Dalod
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France
| | - Joachim L Schultze
- Genomics & Immunoregulation, Life and Medical Sciences Institute (LIMES), University of Bonn, Bonn 53115, Germany; PRECISE Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases and University of Bonn, Bonn 53127, Germany
| | - Toby Lawrence
- CNRS, Aix Marseille University, INSERM, CIML, Marseille 13009, France; Centre for Inflammation Biology and Cancer Immunology, School of Immunology & Micriboal Sciences, King's College London, London SE1 1UL, UK; Henan Key Laboratory of Immunology and Targeted Therapy, School of Laboratory Medicine, Xinxiang Medical University, Xinxiang 453003, Henan Province, China.
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108
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Henrich SE, Thaxton CS. An update on synthetic high-density lipoprotein-like nanoparticles for cancer therapy. Expert Rev Anticancer Ther 2019; 19:515-528. [DOI: 10.1080/14737140.2019.1624529] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Stephen E. Henrich
- Department of Urology, Simpson Querrey Institute for BioNanotechnology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - C. Shad Thaxton
- Department of Urology, Simpson Querrey Institute for BioNanotechnology, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
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109
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Porta C, Marino A, Consonni FM, Bleve A, Mola S, Storto M, Riboldi E, Sica A. Metabolic influence on the differentiation of suppressive myeloid cells in cancer. Carcinogenesis 2019; 39:1095-1104. [PMID: 29982315 DOI: 10.1093/carcin/bgy088] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 06/27/2018] [Indexed: 12/11/2022] Open
Abstract
New evidences indicate that the metabolic instruction of immunity (immune metabolism) results from the integration of cell metabolism and whole-body metabolism, which are both influenced by nutrition, microbiome metabolites and disease-driven metabolism (e.g. cancer metabolism). Cancer metabolism influences the immunological homeostasis and promotes immune alterations that support disease progression, hence influencing the clinical outcome. Cancer cells display increased glucose uptake and fermentation of glucose to lactate, even in the presence of completely functioning mitochondria. A major side effect of this event is immunosuppression, characterized by limited immunogenicity of cancer cells and restriction of the therapeutic efficacy of anticancer immunotherapy. Here, we discuss how the metabolism of myeloid cells associated with cancer contributes to the differentiation of their suppressive phenotype and therefore to cancer immune evasion.
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Affiliation(s)
- Chiara Porta
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara
| | - Arianna Marino
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara
| | | | - Augusto Bleve
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara
| | - Silvia Mola
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara
| | - Mariangela Storto
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara
| | - Elena Riboldi
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara
| | - Antonio Sica
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale "Amedeo Avogadro", Novara.,Humanitas Clinical and Research Center, Rozzano, Italy
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110
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Sissung TM, Rajan A, Blumenthal GM, Liewehr DJ, Steinberg SM, Berman A, Giaccone G, Figg WD. Reproducibility of pharmacogenetics findings for paclitaxel in a heterogeneous population of patients with lung cancer. PLoS One 2019; 14:e0212097. [PMID: 30817750 PMCID: PMC6394902 DOI: 10.1371/journal.pone.0212097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 01/28/2019] [Indexed: 12/12/2022] Open
Abstract
Pharmacogenetics studies have identified several allelic variants with the potential to reduce toxicity and improve treatment outcome. The present study was designed to determine if such findings are reproducible in a heterogenous population of patients with lung cancer undergoing therapy with paclitaxel. We designed a prospective multi-institutional study that recruited n = 103 patients receiving paclitaxel therapy with a 5-year follow up. All patients were genotyped using the Drug Metabolizing Enzymes and Transporters (DMET) platform, which ascertains 1931 genotypes in 235 genes. Progression-free survival (PFS) of paclitaxel therapy and clinically-significant paclitaxel toxicities were classified and compared according to genotype. Initial screening revealed eleven variants that are associated with PFS. Of these, seven variants in ABCB11 (rs4148768), ABCC3 (rs1051640), ABCG1 (rs1541290), CYP8B1 (rs735320), NR3C1 (rs6169), FMO6P (rs7889839), and GSTM3 (rs7483) were associated with paclitaxel PFS in a multivariate analysis accounting for clinical covariates. Multivariate analysis revealed four SNPs in VKORC1 (rs2884737), SLC22A14 (rs4679028), GSTA2 (rs6577), and DCK (rs4643786) were associated with paclitaxel toxicities. With the exception of a variant in VKORC1, the present study did not find the same genetic outcome associations of other published research on pharmacogenetics variants that affect paclitaxel outcomes. This finding suggests that prior pharmacogenomics research findings may not be reproduced in the most frequently-diagnosed malignancy, lung cancer.
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Affiliation(s)
- Tristan M. Sissung
- Clinical Pharmacology Program, Office of the Clinical Director, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Arun Rajan
- Thoracic and Gastrointestinal Oncology Branch, Office of the Clinical Director, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Gideon M. Blumenthal
- Thoracic and Gastrointestinal Oncology Branch, Office of the Clinical Director, National Cancer Institute, Bethesda, Maryland, United States of America
| | - David J. Liewehr
- Biostatistics and Data Management Section, Office of the Clinical Director, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Seth M. Steinberg
- Biostatistics and Data Management Section, Office of the Clinical Director, National Cancer Institute, Bethesda, Maryland, United States of America
| | - Arlene Berman
- Office of Research Nursing in the Office of the Clinical Director, Office of the Clinical Director, National Cancer Institute, Bethesda, MD, United States of America
| | - Giuseppe Giaccone
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C., United States of America
| | - William D. Figg
- Clinical Pharmacology Program, Office of the Clinical Director, National Cancer Institute, Bethesda, Maryland, United States of America
- * E-mail:
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111
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Bagley J, Williams L, Hyde M, Birriel CR, Iacomini J. Hyperlipidemia and Allograft Rejection. CURRENT TRANSPLANTATION REPORTS 2019; 6:90-98. [PMID: 31934529 DOI: 10.1007/s40472-019-0232-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Purpose of review Advances in the development of immunosuppressive drug regimens have led to impressive survival rates in the year following organ transplantation. However rates of long-term graft dysfunction remain undesirably high. Recently it has been shown that co-morbidities in the patient population may affect graft survival. In mouse models, hyperlipidemia, a co-morbidity present in the majority of cardiac transplant patients, can significantly alter T cell responses to cardiac and skin allografts, and accelerate graft rejection. Here we review recent advances in our understanding of how alterations in lipids affect immune function and graft survival. Recent Findings Recent work in humans has highlighted the importance of controlling low density lipoprotein (LDL) levels in transplant recipients to reduce the development of chronic allograft vasculopathy (CAV). High serum levels of cholesterol containing particles leads to extensive immune system changes to T cell proliferation, differentiation and suppression. Changes in B cell subsets, and the ability of antigen presenting cells to stimulate T cells in hyperlipidemic animals may also contribute to increased organ allograft rejection. Summary Cholesterol metabolism is a critical cellular pathway for proper control of immune cell homeostasis and activation. Increasing evidence in both human, and in mouse models shows that elevated levels of serum cholesterol can have profound impact on the immune system. Hyperlipidemia has been shown to increase T cell activation, alter the development of T helper subsets, increase the inflammatory capacity of antigen presenting cells (APC) and significantly accelerate graft rejection in several models.
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Affiliation(s)
- Jessamyn Bagley
- Tufts University School of Medicine, Department of Immunology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, MA 02111 USA
| | - Linus Williams
- Tufts University School of Medicine, Department of Immunology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, MA 02111 USA
| | - Michael Hyde
- Tufts University School of Medicine, Department of Immunology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, MA 02111 USA
| | - Christian Rosa Birriel
- Tufts University School of Medicine, Department of Immunology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, MA 02111 USA
| | - John Iacomini
- Tufts University School of Medicine, Department of Immunology, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, MA 02111 USA
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112
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Ganjali S, Ricciuti B, Pirro M, Butler AE, Atkin SL, Banach M, Sahebkar A. High-Density Lipoprotein Components and Functionality in Cancer: State-of-the-Art. Trends Endocrinol Metab 2019; 30:12-24. [PMID: 30473465 DOI: 10.1016/j.tem.2018.10.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/26/2018] [Accepted: 10/26/2018] [Indexed: 01/05/2023]
Abstract
Cancer is the second leading cause of death in western countries, and thus represents a major global public health issue. Whilst it is well-recognized that diet, obesity, and smoking are risk factors for cancer, the role of low levels of high-density lipoprotein cholesterol (HDL-C) in cancer is less well appreciated. Conflicting evidence suggests that serum HDL-C levels may be either positively or negatively associated with cancer incidence and mortality. Such disparate associations are supported in part by the multitude of high-density lipoprotein (HDL) functions that can all have an impact on cancer cell biology. The aim of this review is to provide a comprehensive overview of the crosstalk between HDLs and cancer, focusing on the molecular mechanisms underlying this association.
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Affiliation(s)
- Shiva Ganjali
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Biagio Ricciuti
- Department of Medical Oncology, S. Maria della Misericordia Hospital, Perugia, Italy
| | - Matteo Pirro
- Unit of Internal Medicine, Department of Medicine, University of Perugia, Perugia, Italy
| | - Alexandra E Butler
- Diabetes Research Center, Qatar Biomedical Research Institute, Doha, Qatar
| | | | - Maciej Banach
- Department of Hypertension, WAM University Hospital in Lodz, Medical University of Lodz, Zeromskiego 113, Lodz, Poland; Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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113
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Samadi S, Ghayour-Mobarhan M, Mohammadpour A, Farjami Z, Tabadkani M, Hosseinnia M, Miri M, Heydari-Majd M, Mehramiz M, Rezayi M, Ferns GA, Avan A. High-density lipoprotein functionality and breast cancer: A potential therapeutic target. J Cell Biochem 2018; 120:5756-5765. [PMID: 30362608 DOI: 10.1002/jcb.27862] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/19/2018] [Indexed: 12/16/2022]
Abstract
Breast cancer is a major cause of death globally, and particularly in developed countries. Breast cancer is influenced by cholesterol membrane content, by affecting the signaling pathways modulating cell growth, adherence, and migration. Furthermore, steroid hormones are derived from cholesterol and these play a key role in the pathogenesis of breast cancer. Although most findings have reported an inverse association between serum high-density lipoprotein (HDL)-cholesterol level and the risk of breast cancer, there have been some reports of the opposite, and the association therefore remains unclear. HDL is principally known for participating in reverse cholesterol transport and has an inverse relationship with the cardiovascular risk. HDL is heterogeneous, with particles varying in composition, size, and structure, which can be altered under different circumstances, such as inflammation, aging, and certain diseases. It has also been proposed that HDL functionality might have a bearing on the breast cancer. Owing to the potential role of cholesterol in cancer, its reduction using statins, and particularly as an adjuvant during chemotherapy may be useful in the anticancer treatment, and may also be related to the decline in cancer mortality. Reconstituted HDLs have the ability to release chemotherapeutic drugs inside the cell. As a consequence, this may be a novel way to improve therapeutic targeting for the breast cancer on the basis of detrimental impacts of oxidized HDL on cancer development.
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Affiliation(s)
- Sara Samadi
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour-Mobarhan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhooshang Mohammadpour
- Department of Clinical Pharmacy, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Farjami
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahla Tabadkani
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Hosseinnia
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehri Miri
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Motahareh Heydari-Majd
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehrane Mehramiz
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Rezayi
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Brighton, UK
| | - Amir Avan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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114
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Harris MT, Hussain SS, Inouye CM, Castle AM, Castle JD. Reinterpretation of the localization of the ATP binding cassette transporter ABCG1 in insulin-secreting cells and insights regarding its trafficking and function. PLoS One 2018; 13:e0198383. [PMID: 30235209 PMCID: PMC6147399 DOI: 10.1371/journal.pone.0198383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 09/04/2018] [Indexed: 01/08/2023] Open
Abstract
The ABC transporter ABCG1 contributes to the regulation of cholesterol efflux from cells and to the distribution of cholesterol within cells. We showed previously that ABCG1 deficiency inhibits insulin secretion by pancreatic beta cells and, based on its immunolocalization to insulin granules, proposed its essential role in forming granule membranes that are enriched in cholesterol. While we confirm elsewhere that ABCG1, alongside ABCA1 and oxysterol binding protein OSBP, supports insulin granule formation, the aim here is to clarify the localization of ABCG1 within insulin-secreting cells and to provide added insight regarding ABCG1's trafficking and sites of function. We show that stably expressed GFP-tagged ABCG1 closely mimics the distribution of endogenous ABCG1 in pancreatic INS1 cells and accumulates in the trans-Golgi network (TGN), endosomal recycling compartment (ERC) and on the cell surface but not on insulin granules, early or late endosomes. Notably, ABCG1 is short-lived, and proteasomal and lysosomal inhibitors both decrease its degradation. Following blockade of protein synthesis, GFP-tagged ABCG1 first disappears from the ER and TGN and later from the ERC and plasma membrane. In addition to aiding granule formation, our findings raise the prospect that ABCG1 may act beyond the TGN to regulate activities involving the endocytic pathway, especially as the amount of transferrin receptor is increased in ABCG1-deficient cells. Thus, ABCG1 may function at multiple intracellular sites and the plasma membrane as a roving sensor and modulator of cholesterol distribution, membrane trafficking and cholesterol efflux.
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Affiliation(s)
- Megan T. Harris
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Syed Saad Hussain
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Candice M. Inouye
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - Anna M. Castle
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
| | - J. David Castle
- Department of Cell Biology, University of Virginia School of Medicine, Charlottesville, Virginia, United States of America
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115
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Gao R, Liang JH, Wang L, Zhu HY, Wu W, Cao L, Fan L, Li JY, Yang T, Xu W. Low serum cholesterol levels predict inferior prognosis and improve NCCN-IPI scoring in diffuse large B cell lymphoma. Int J Cancer 2018; 143:1884-1895. [PMID: 29744861 DOI: 10.1002/ijc.31590] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/15/2018] [Accepted: 04/23/2018] [Indexed: 01/08/2023]
Abstract
Low circulating cholesterol concentration is associated with elevated cancer incidence and mortality. However, the association between cholesterol levels and diffuse large B cell lymphoma (DLBCL) remains unknown. The aim of our study was to evaluate the prognostic value of serum lipid profile in DLBCL. Five hundred and fifty enrolled subjects with detailed serum lipid levels at diagnosis of DLBCL were randomly divided into a training set (n = 367) and a validation set (n = 183) (ratio, 2:1). Multivariate Cox regression analyses screened the prognostic factors associated with progression-free survival (PFS) and overall survival (OS). Performances of models were compared using C-index and area under the curve in internal and external validation. The results showed that decreased levels of total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were associated with unfavorable PFS and OS in the rituximab era, and concurrently low HDL-C together with low LDL-C was an independent prognostic indicator for both PFS and OS. Patients achieving complete remission or partial remission after 6-8 circles of chemotherapies had significantly increased cholesterol levels compared to the levels at DLBCL diagnosis, and HDL-C or LDL-C elevations were correlated with better survival. Furthermore, the predictive and discriminatory capacity of the National Comprehensive Cancer Network (NCCN)-International Prognostic Index (IPI) together with low cholesterol levels was superior to NCCN-IPI alone both in the training and validation set. In conclusion, serum cholesterol levels are simple and routinely tested parameters, which may be good candidates for predicting prognosis in the future clinical practice of DLBCL.
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Affiliation(s)
- Rui Gao
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China.,Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - Jin-Hua Liang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Li Wang
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Hua-Yuan Zhu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Wei Wu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Lei Cao
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Lei Fan
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Jian-Yong Li
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
| | - Tao Yang
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - Wei Xu
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing, China
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116
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Pirro M, Ricciuti B, Rader DJ, Catapano AL, Sahebkar A, Banach M. High density lipoprotein cholesterol and cancer: Marker or causative? Prog Lipid Res 2018; 71:54-69. [DOI: 10.1016/j.plipres.2018.06.001] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 05/15/2018] [Accepted: 06/02/2018] [Indexed: 12/11/2022]
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117
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Natural low- and high-density lipoproteins as mighty bio-nanocarriers for anticancer drug delivery. Cancer Chemother Pharmacol 2018; 82:371-382. [DOI: 10.1007/s00280-018-3626-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 06/12/2018] [Indexed: 02/07/2023]
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118
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Rodrigues NV, Correia DV, Mensurado S, Nóbrega-Pereira S, deBarros A, Kyle-Cezar F, Tutt A, Hayday AC, Norell H, Silva-Santos B, Dias S. Low-Density Lipoprotein Uptake Inhibits the Activation and Antitumor Functions of Human Vγ9Vδ2 T Cells. Cancer Immunol Res 2018; 6:448-457. [PMID: 29358174 DOI: 10.1158/2326-6066.cir-17-0327] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 11/14/2017] [Accepted: 01/08/2018] [Indexed: 11/16/2022]
Abstract
Vγ9Vδ2 T cells, the main subset of γδ T lymphocytes in human peripheral blood, are endowed with antitumor functions such as cytotoxicity and IFNγ production. These functions are triggered upon T-cell receptor-dependent activation by non-peptidic prenyl pyrophosphates ("phosphoantigens") that are selective agonists of Vγ9Vδ2 T cells, and which have been evaluated in clinical studies. Because phosphoantigens have shown interindividual variation in Vγ9Vδ2 T-cell activities, we asked whether metabolic resources, namely lipids such as cholesterol, could affect phosphoantigen-mediated Vγ9Vδ2 T-cell activation and function. We show here that Vγ9Vδ2 T cells express the LDL receptor upon activation and take up LDL cholesterol. Resulting changes, such as decreased mitochondrial mass and reduced ATP production, correlate with downregulation of Vγ9Vδ2 T-cell activation and functionality. In particular, the expression of IFNγ, NKG2D, and DNAM-1 were reduced upon LDL cholesterol treatment of phosphoantigen-expanded Vγ9Vδ2 T cells. As a result, their capacity to target breast cancer cells was compromised both in vitro and in an in vivo xenograft mouse model. Thus, this study describes the role of LDL cholesterol as an inhibitor of the antitumor functions of phosphoantigen-activated Vγ9Vδ2 T cells. Our observations have implications for therapeutic applications dependent on Vγ9Vδ2 T cells. Cancer Immunol Res; 6(4); 448-57. ©2018 AACR.
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Affiliation(s)
- Neidy V Rodrigues
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal.,Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Programa de Pós-Graduação Ciência para o Desenvolvimento, Oeiras, Portugal.,Faculdade de Ciência e Tecnologia, Uni-CV, Campus do Palmarejo, Praia, Cabo Verde
| | - Daniel V Correia
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Sofia Mensurado
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | | | - Ana deBarros
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | | | - Andrew Tutt
- King's College London, London, United Kingdom.,Institute of Cancer Research, London, United Kingdom
| | - Adrian C Hayday
- King's College London, London, United Kingdom.,Francis Crick Institute, London, United Kingdom
| | - Haakan Norell
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal
| | - Bruno Silva-Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal.
| | - Sérgio Dias
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Portugal.
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119
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Chang H, Wei JW, Chen K, Zhang S, Han F, Lu LX, Xiao WW, Gao YH. Apolipoprotein A-I Is a Prognosticator of Nasopharyngeal Carcinoma in the Era of Intensity-modulated Radiotherapy. J Cancer 2018; 9:702-710. [PMID: 29556328 PMCID: PMC5858492 DOI: 10.7150/jca.22836] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 12/08/2017] [Indexed: 02/07/2023] Open
Abstract
Background: In the era of intensity-modulated radiotherapy (IMRT), distant metastasis remains the major cause of death from nasopharyngeal carcinoma (NPC). This study aimed to evaluate the clinical value of pretreatment serum lipid profiles in predicting clinical outcome of NPC. Methodology / Principal Findings: A total of 1927 consecutive patients who had untreated NPC and completed radical IMRT between Jan. 2010 and Dec. 2011 were retrospectively reviewed. Pretreatment serum lipid indexes including total cholesterol, triglyceride, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, apolipoprotein A-I (apoAI) and apolipoprotein B were analyzed for their association with survivals, together with the clinical features (age, sex, pathological type, anemia, chemotherapy sequence and Epstein-Barr virus deoxyribonucleic acid). Hazard ratio (HR) and 95% confidence interval (CI) were calculated for each independent prognosticator. After univariate and multivariate survival analysis, low apoAI level (< 1.125 mmol/L) appeared to predict poor 5-year overall survival (OS), disease-free survival (DFS) and distant-metastasis-free survival (DMFS).The HRs were 1.549 (95% CI, 1.137-2.109), 1.293 (95% CI, 1.047-1.597) and 1.288 (95% CI, 1.022-1.623), respectively. Subgroup survival analysis showed that the apoAI maintained predicting independence for OS, DFS and DMFS in patients with locally advanced NPC, even in those treated with concurrent chemoradiotherapy. Conclusions / Significance: NPC patient with low serum level of pretreatment apoAI might be at risk of distant metastasis. Treatment aiming to eradicate distant metastasis might improve survival of these patients.
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Affiliation(s)
- Hui Chang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Jia-Wang Wei
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Kai Chen
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Shu Zhang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Fei Han
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Li-Xia Lu
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Wei-Wei Xiao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
| | - Yuan-Hong Gao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China; Collaborative Innovation Center of Cancer Medicine; Guangzhou, Guangdong 510060, China
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120
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Yamauchi Y, Rogers MA. Sterol Metabolism and Transport in Atherosclerosis and Cancer. Front Endocrinol (Lausanne) 2018; 9:509. [PMID: 30283400 PMCID: PMC6157400 DOI: 10.3389/fendo.2018.00509] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 08/14/2018] [Indexed: 01/22/2023] Open
Abstract
Cholesterol is a vital lipid molecule for mammalian cells, regulating fluidity of biological membranes, and serving as an essential constituent of lipid rafts. Mammalian cells acquire cholesterol from extracellular lipoproteins and from de novo synthesis. Cholesterol biosynthesis generates various precursor sterols. Cholesterol undergoes metabolic conversion into oxygenated sterols (oxysterols), bile acids, and steroid hormones. Cholesterol intermediates and metabolites have diverse and important cellular functions. A network of molecular machineries including transcription factors, protein modifiers, sterol transporters/carriers, and sterol sensors regulate sterol homeostasis in mammalian cells and tissues. Dysfunction in metabolism and transport of cholesterol, sterol intermediates, and oxysterols occurs in various pathophysiological settings such as atherosclerosis, cancers, and neurodegenerative diseases. Here we review the cholesterol, intermediate sterol, and oxysterol regulatory mechanisms and intracellular transport machineries, and discuss the roles of sterols and sterol metabolism in human diseases.
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Affiliation(s)
- Yoshio Yamauchi
- Nutri-Life Science Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, Japan
- AMED-CREST, Japan Agency for Medical Research and Development, Tokyo, Japan
- *Correspondence: Yoshio Yamauchi
| | - Maximillian A. Rogers
- Division of Cardiovascular Medicine, Center for Interdisciplinary Cardiovascular Sciences, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
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Abstract
PURPOSE OF REVIEW Hyperlipidemia is a comorbidity affecting a significant number of transplant patients despite treatment with cholesterol lowering drugs. Recently, it has been shown that hyperlipidemia can significantly alter T-cell responses to cardiac allografts in mice, and graft rejection is accelerated in dyslipidemic mice. Here, we review recent advances in our understanding of hyperlipidemia in graft rejection. RECENT FINDINGS Hyperlipidemic mice have significant increases in serum levels of proinflammatory cytokines, and neutralization of interleukin 17 (IL-17) slows graft rejection, suggesting that IL-17 production by Th17 cells was necessary but not sufficient for rejection. Hyperlipidemia also causes an increase in alloreactive T-cell responses prior to antigen exposure. Analysis of peripheral tolerance mechanisms indicated that this was at least in part due to alterations in FoxP3 T cells that led to reduced Treg function and the expansion of FoxP3 CD4 T cells expressing low levels of CD25. Functionally, alterations in Treg function prevented the ability to induce operational tolerance to fully allogeneic heart transplants through costimulatory-molecule blockade, a strategy that requires Tregs. SUMMARY These findings highlight the importance of considering the contribution of inflammatory comorbidities to cardiac allograft rejection, and point to the potential importance of managing hyperlipidemia in the transplant population.
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122
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Sui X, Lei L, Chen L, Xie T, Li X. Inflammatory microenvironment in the initiation and progression of bladder cancer. Oncotarget 2017; 8:93279-93294. [PMID: 29190997 PMCID: PMC5696263 DOI: 10.18632/oncotarget.21565] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 09/08/2017] [Indexed: 12/18/2022] Open
Abstract
Accumulating evidence suggests the idea that chronic inflammation may play a critical role in various malignancies including bladder cancer and long-term treatment with non-steroidal anti-inflammatory drugs (NSAIDs) is significantly effective in reducing certain cancer incidence and mortality. However, the molecular mechanisms leading to malignant transformation and the progression of bladder cancer in a chronically inflammatory environment remain largely unknown. In this review, we will describe the role of inflammation in the formation and development of bladder cancer and summarize the possible molecular mechanisms by which chronic inflammation regulates cell immune response, proliferation and metastasis. Understanding the novel function orchestrating inflammation and bladder cancer will hopefully provide us insights into their future clinical significance in preventing bladder carcinogenesis and progression.
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Affiliation(s)
- Xinbing Sui
- Department of Medical Oncology Holistic Integrative Oncology Institutes and Holistic Integrative Pharmacy Institutes, The Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, China.,Department of Medical Oncology Holistic Integrative Cancer Center of Traditional Chinese and Western Medicine, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Liming Lei
- Department of Cardiovascular Surgery of Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Laboratory of South China Structural Heart Disease, Guangzhou, China
| | - Liuxi Chen
- Department of Medical Oncology, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Tian Xie
- Department of Medical Oncology Holistic Integrative Oncology Institutes and Holistic Integrative Pharmacy Institutes, The Affiliated Hospital of Hangzhou Normal University, College of Medicine, Hangzhou Normal University, Hangzhou, China.,Department of Medical Oncology Holistic Integrative Cancer Center of Traditional Chinese and Western Medicine, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Xue Li
- Departments of Urology and Pathology, Boston Children's Hospital, Boston, MA, USA.,Department of Surgery, Harvard Medical School, Boston, MA, USA
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123
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Nano J, Ghanbari M, Wang W, de Vries PS, Dhana K, Muka T, Uitterlinden AG, van Meurs JBJ, Hofman A, Franco OH, Pan Q, Murad SD, Dehghan A. Epigenome-Wide Association Study Identifies Methylation Sites Associated With Liver Enzymes and Hepatic Steatosis. Gastroenterology 2017. [PMID: 28624579 DOI: 10.1053/j.gastro.2017.06.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND & AIMS Epigenetic mechanisms might be involved in the regulation of liver enzyme level. We aimed to identify CpG sites at which DNA methylation levels are associated with blood levels of liver enzymes and hepatic steatosis. METHODS We conducted an epigenome-wide association study in whole blood for liver enzyme levels, including gamma-glutamyl transferase (GGT), alanine aminotransferase (ALT), and aspartate aminotransferase (AST), among a discovery set of 731 participants of the Rotterdam Study and sought replication in a non-overlapping sample of 719 individuals. Significant DNA methylation changes were further analyzed to evaluate their relation with hepatic steatosis. Expression levels of the top identified gene were measured in 9 human liver cell lines and compared with expression profiles of its potential targets associated with lipid traits. The candidate gene was subsequently knocked down in human hepatoma cells using lentiviral vectors expressing small hairpin RNAs. RESULTS Eight probes annotated to SLC7A11, SLC1A5, SLC43A1, PHGDH, PSORS1C1, SREBF1, ANKS3 were associated with GGT and 1 probe annotated to SLC7A11 was associated with ALT after Bonferroni correction (1.0 × 10-7). No probe was identified for AST levels. Four probes for GGT levels including cg06690548 (SLC7A11), cg11376147 (SLC43A1), cg22304262 (SLC1A5), and cg14476101 (PHGDH), and 1 for ALT cg06690548 (SLC7A11) were replicated. DNA methylation at SLC7A11 was associated with reduced risk of hepatic steatosis in participants (odds ratio, 0.69; 95% CI= 0.55-0.93; P value: 2.7 × 10-3). In functional experiments, SLC7A11 was highly expressed in human liver cells; its expression is positively correlated with expression of a panel of lipid-associated genes, indicating a role of SLC7A11 in lipid metabolism. CONCLUSIONS Our results provide new insights into epigenetic mechanisms associated with markers of liver function and hepatic steatosis, laying the groundwork for future diagnostic and therapeutic applications.
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Affiliation(s)
- Jana Nano
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Mohsen Ghanbari
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Wenshi Wang
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Paul S de Vries
- Human Genetics Center, University of Texas Health Science Center at Houston, Houston, Texas
| | - Klodian Dhana
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | - Taulant Muka
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - André G Uitterlinden
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Albert Hofman
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts
| | | | - Oscar H Franco
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Qiuwei Pan
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Sarwa Darwish Murad
- Department of Gastroenterology and Hepatology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Abbas Dehghan
- Department of Biostatistics and Epidemiology, MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London.
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124
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Zamanian-Daryoush M, Lindner DJ, DiDonato JA, Wagner M, Buffa J, Rayman P, Parks JS, Westerterp M, Tall AR, Hazen SL. Myeloid-specific genetic ablation of ATP-binding cassette transporter ABCA1 is protective against cancer. Oncotarget 2017; 8:71965-71980. [PMID: 29069761 PMCID: PMC5641104 DOI: 10.18632/oncotarget.18666] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 05/23/2017] [Indexed: 02/07/2023] Open
Abstract
Increased circulating levels of apolipoprotein A-I (apoA-I), the major protein of high-density lipoprotein (HDL), by genetic manipulation or infusion, protects against melanoma growth and metastasis. Herein, we explored potential roles in melanoma tumorigenesis for host scavenger receptor class B, type 1 (SR-B1), and ATP-binding cassette transporters A1 (ABCA1) and G1 (ABCG1), all mediators of apoA-I and HDL sterol and lipid transport function. In a syngeneic murine melanoma tumor model, B16F10, mice with global deletion of SR-B1 expression exhibited increased plasma HDL cholesterol (HDLc) levels and decreased tumor volume, indicating host SR-B1 does not directly contribute to HDL-associated anti-tumor activity. In mice with myeloid-specific loss of ABCA1 (Abca1-M/-M ; A1-M/-M), tumor growth was inhibited by ∼4.8-fold relative to wild type (WT) animals. Abcg1-M/-M (G1-M/-M) animals were also protected by 2.5-fold relative to WT, with no further inhibition of tumor growth in Abca1/Abcg1 myeloid-specific double knockout animals (DKO). Analyses of tumor-infiltrating immune cells revealed a correlation between tumor protection and decreased presence of the immune suppressive myeloid-derived suppressor cell (MDSC) subsets, Ly-6G+Ly-6CLo and Ly-6GnegLy-6CHi cells. The growth of the syngeneic MB49 murine bladder cancer cells was also inhibited in A1-M/-M mice. Collectively, our studies provide further evidence for an immune modulatory role for cholesterol homeostasis pathways in cancer.
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Affiliation(s)
| | - Daniel J. Lindner
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Joseph A. DiDonato
- Department of Cellular & Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Matthew Wagner
- Department of Cellular & Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Jennifer Buffa
- Department of Cellular & Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Patricia Rayman
- Department of Immunology, Cleveland Clinic, Cleveland, OH 44195, USA
| | - John S. Parks
- Department of Internal Medicine, Section on Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA
| | - Marit Westerterp
- Department of Medicine, Columbia University, College of Physicians and Surgeons 8-401, New York, NY 10032, USA
| | - Alan R. Tall
- Department of Medicine, Columbia University, College of Physicians and Surgeons 8-401, New York, NY 10032, USA
| | - Stanley L. Hazen
- Department of Cellular & Molecular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
- Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, OH 44195, USA
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125
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Riella LV, Bagley J, Iacomini J, Alegre ML. Impact of environmental factors on alloimmunity and transplant fate. J Clin Invest 2017; 127:2482-2491. [PMID: 28481225 DOI: 10.1172/jci90596] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Although gene-environment interactions have been investigated for many years to understand people's susceptibility to autoimmune diseases or cancer, a role for environmental factors in modulating alloimmune responses and transplant outcomes is only now beginning to emerge. New data suggest that diet, hyperlipidemia, pollutants, commensal microbes, and pathogenic infections can all affect T cell activation, differentiation, and the kinetics of graft rejection. These observations reveal opportunities for novel therapeutic interventions to improve graft outcomes as well as for noninvasive biomarker discovery to predict or diagnose graft deterioration before it becomes irreversible. In this Review, we will focus on the impact of these environmental factors on immune function and, when known, on alloimmune function, as well as on transplant fate.
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Affiliation(s)
- Leonardo V Riella
- Schuster Family Transplantation Research Center, Renal Division, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Jessamyn Bagley
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, Massachusetts, USA
| | - John Iacomini
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Sackler School of Biomedical Sciences Programs in Immunology and Genetics, Boston, Massachusetts, USA
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126
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Tian C, Huang D, Yu Y, Zhang J, Fang Q, Xie C. ABCG1 as a potential oncogene in lung cancer. Exp Ther Med 2017; 13:3189-3194. [PMID: 28588672 PMCID: PMC5450787 DOI: 10.3892/etm.2017.4393] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 11/18/2016] [Indexed: 12/19/2022] Open
Abstract
ATP-binding cassette transporter G1 (ABCG1) is a member of the ABC transporter family and regulates cellular cholesterol homeostasis. It has important roles in cholesterol homeostasis and tumor immunity, which has, however, not been reported in lung cancer. The present study showed that ABCG1 protein is upregulated in lung cancer compared with adjacent normal tissues and furthermore, aberrant ABCG1 expression was detected in lung cancer cell lines. ABCG1 was shown to promote the proliferation of HKULC4 lung cancer cells. Moreover, ABCG1 was found to regulate proliferation-, apoptosis- and cancer stem cell-associated markers in HKULC4 cells, implying that ABCG1 has important roles not only in the regulation of proliferation but also of apoptosis and cancer stem cells. A microRNA microarray analysis showed that ABCG1 significantly downregulated miR-29a, -b and -c expression in HKULC4 cells. Finally, it was demonstrated that ABCG1 promoted the migration and invasion in HKULC4 cells. Thus, ABCG1 may be a novel therapeutic target to improve the treatment of non-small cell lung cancer.
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Affiliation(s)
- Chunyan Tian
- Department of Health Care and Geriatrics, Yidu Central Hospital Affiliated to Weifang Medical University, Qingzhou, Shandong 262500, P.R. China
| | - Di Huang
- Department of Clinical Medicine, Medical School of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yanli Yu
- Department of Health Care and Geriatrics, Yidu Central Hospital Affiliated to Weifang Medical University, Qingzhou, Shandong 262500, P.R. China
| | - Jihong Zhang
- Department of Critical Care Medicine (ICU), Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Qingxin Fang
- Department of Health Care and Geriatrics, Yidu Central Hospital Affiliated to Weifang Medical University, Qingzhou, Shandong 262500, P.R. China
| | - Chao Xie
- The Third Department of Internal Medicine, Shandong Cancer Hospital, Jinan, Shandong 250017, P.R. China
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127
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Growth Hormone Receptor Knockdown Sensitizes Human Melanoma Cells to Chemotherapy by Attenuating Expression of ABC Drug Efflux Pumps. Discov Oncol 2017; 8:143-156. [PMID: 28293855 DOI: 10.1007/s12672-017-0292-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Accepted: 03/02/2017] [Indexed: 12/16/2022] Open
Abstract
Melanoma remains one of the most therapy-resistant forms of human cancer despite recent introductions of highly efficacious targeted therapies. The intrinsic therapy resistance of human melanoma is largely due to abundant expression of a repertoire of xenobiotic efflux pumps of the ATP-binding cassette (ABC) transporter family. Here, we report that GH action is a key mediator of chemotherapeutic resistance in human melanoma cells. We investigated multiple ABC efflux pumps (ABCB1, ABCB5, ABCB8, ABCC1, ABCC2, ABCG1, and ABCG2) reportedly associated with melanoma drug resistance in different human melanoma cells and tested the efficacy of five different anti-cancer compounds (cisplatin, doxorubicin, oridonin, paclitaxel, vemurafenib) with decreased GH action. We found that GH treatment of human melanoma cells upregulates expression of multiple ABC transporters and increases the EC50 of melanoma drug vemurafenib. Also, vemurafenib-resistant melanoma cells had upregulated levels of GH receptor (GHR) expression as well as ABC efflux pumps. GHR knockdown (KD) using siRNA in human melanoma cells treated with sub-EC50 doses of anti-tumor compounds resulted in significantly increased drug retention, decreased cell proliferation and increased drug efficacy, compared to mock-transfected controls. Our set of findings identify an unknown mechanism of GH regulation in mediating melanoma drug resistance and validates GHR as a unique therapeutic target for sensitizing highly therapy-resistant human melanoma cells to lower doses of anti-cancer drugs.
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128
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de Aguiar Vallim TQ, Lee E, Merriott DJ, Goulbourne CN, Cheng J, Cheng A, Gonen A, Allen RM, Palladino END, Ford DA, Wang T, Baldán Á, Tarling EJ. ABCG1 regulates pulmonary surfactant metabolism in mice and men. J Lipid Res 2017; 58:941-954. [PMID: 28264879 DOI: 10.1194/jlr.m075101] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/03/2017] [Indexed: 12/27/2022] Open
Abstract
Idiopathic pulmonary alveolar proteinosis (PAP) is a rare lung disease characterized by accumulation of surfactant. Surfactant synthesis and secretion are restricted to epithelial type 2 (T2) pneumocytes (also called T2 cells). Clearance of surfactant is dependent upon T2 cells and macrophages. ABCG1 is highly expressed in both T2 cells and macrophages. ABCG1-deficient mice accumulate surfactant, lamellar body-loaded T2 cells, lipid-loaded macrophages, B-1 lymphocytes, and immunoglobulins, clearly demonstrating that ABCG1 has a critical role in pulmonary homeostasis. We identify a variant in the ABCG1 promoter in patients with PAP that results in impaired activation of ABCG1 by the liver X receptor α, suggesting that ABCG1 basal expression and/or induction in response to sterol/lipid loading is essential for normal lung function. We generated mice lacking ABCG1 specifically in either T2 cells or macrophages to determine the relative contribution of these cell types on surfactant lipid homeostasis. These results establish a critical role for T2 cell ABCG1 in controlling surfactant and overall lipid homeostasis in the lung and in the pathogenesis of human lung disease.
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Affiliation(s)
- Thomas Q de Aguiar Vallim
- Department of Medicine, University of California Los Angeles, Los Angeles, CA 90095.,Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095.,Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA 90095.,Johnson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA 90095
| | - Elinor Lee
- Department of Medicine, University of California Los Angeles, Los Angeles, CA 90095.,Division of Pulmonary and Critical Care Medicine, University of California Los Angeles, Los Angeles, CA 90095
| | - David J Merriott
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095
| | | | - Joan Cheng
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095
| | - Angela Cheng
- Department of Biological Chemistry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095
| | - Ayelet Gonen
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
| | - Ryan M Allen
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University, St. Louis, MO 63104
| | - Elisa N D Palladino
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University, St. Louis, MO 63104.,Center for Cardiovascular Research, School of Medicine, Saint Louis University, St. Louis, MO 63104
| | - David A Ford
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University, St. Louis, MO 63104.,Center for Cardiovascular Research, School of Medicine, Saint Louis University, St. Louis, MO 63104
| | - Tisha Wang
- Department of Medicine, University of California Los Angeles, Los Angeles, CA 90095.,Division of Pulmonary and Critical Care Medicine, University of California Los Angeles, Los Angeles, CA 90095
| | - Ángel Baldán
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University, St. Louis, MO 63104
| | - Elizabeth J Tarling
- Department of Medicine, University of California Los Angeles, Los Angeles, CA 90095 .,Molecular Biology Institute, University of California Los Angeles, Los Angeles, CA 90095.,Johnson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA 90095
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129
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Tie G, Yan J, Khair L, Messina JA, Deng A, Kang J, Fazzio T, Messina LM. Hypercholesterolemia Increases Colorectal Cancer Incidence by Reducing Production of NKT and γδ T Cells from Hematopoietic Stem Cells. Cancer Res 2017; 77:2351-2362. [PMID: 28249902 DOI: 10.1158/0008-5472.can-16-1916] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 10/31/2016] [Accepted: 02/24/2017] [Indexed: 12/12/2022]
Abstract
Obesity will soon surpass smoking as the most preventable cause of cancer. Hypercholesterolemia, a common comorbidity of obesity, has been shown to increase cancer risk, especially colorectal cancer. However, the mechanism by which hypercholesterolemia or any metabolic disorder increases cancer risk remains unknown. In this study, we show that hypercholesterolemia increases the incidence and pathologic severity of colorectal neoplasia in two independent mouse models. Hypocholesterolemia induced an oxidant stress-dependent increase in miR101c, which downregulated Tet1 in hematopoietic stem cells (HSC), resulting in reduced expression of genes critical to natural killer T cell (NKT) and γδ T-cell differentiation. These effects reduced the number and function of terminally differentiated NKT and γδ T cells in the thymus, the colon submucosa, and during early tumorigenesis. These results suggest a novel mechanism by which a metabolic disorder induces epigenetic changes to reduce lineage priming of HSC toward immune cells, thereby compromising immunosurveillance against cancer. Cancer Res; 77(9); 2351-62. ©2017 AACR.
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Affiliation(s)
- Guodong Tie
- Diabetes Center of Excellence and Division of Vascular and Endovascular Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Jinglian Yan
- Diabetes Center of Excellence and Division of Vascular and Endovascular Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Lyne Khair
- Diabetes Center of Excellence and Division of Vascular and Endovascular Surgery, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Julia A Messina
- Division of Infectious Diseases, Duke University School of Medicine, Durham, North Carolina
| | - April Deng
- Department of Pathology, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Joonsoo Kang
- Department of Pathology, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Thomas Fazzio
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Louis M Messina
- Diabetes Center of Excellence and Division of Vascular and Endovascular Surgery, University of Massachusetts Medical School, Worcester, Massachusetts.
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130
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Baek SH, Kim KI, Yoon KS, Kim TH, Kim SY. Genome-wide association scans for idiopathic osteonecrosis of the femoral head in a Korean population. Mol Med Rep 2016; 15:750-758. [PMID: 28000841 PMCID: PMC5364851 DOI: 10.3892/mmr.2016.6036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Accepted: 11/11/2016] [Indexed: 01/24/2023] Open
Abstract
Osteonecrosis of the femoral head (ONFH) is a multifactorial disease and is associated with genetic predisposition, and exposure to certain risk factors. In particular, idiopathic ONFH in twins and the clustering of cases in families have indicated that genetic factors are involved. However, the majority of cases of ONFH are sporadic and various studies have demonstrated that differences in the study design and/or the ethnic groups analyzed leads to different results. The present study performed one of the first genome-wide association studies to identify genetic loci that may increase the risk of idiopathic ONFH. In total, 217 patients with idiopathic ONFH and 217 control samples, without ONFH, were genotyped using Axiom™ chips. Following quality control, 509,886 single-nucleotide polymorphisms (SNPs) were included in the association analysis to identify genetic variants that may influence susceptibility to idiopathic ONFH. The lowest P-value identified by the current study was for an association with rs220324 (P=3.57×10-7), an SNP that is located near to the uromodulin-like 1 gene region on chromosome 21q22.3, although none of the SNPs reached the traditional genome-wide significance level of 5×10–8. However, the DnaJ heat shock protein family (Hsp40) member C6 (DNAJC6) locus, a region between 65.37 and 65.67 Mb located on chromosome 1p31.3, harbored a cluster of SNPs that were associated with idiopathic ONFH at a significance level of P<1×10–5. Four variants, rs10493374, rs12032616, rs17127529 and rs6679032, with marginal associations were located in and around the DNAJC6 locus and were in strong linkage disequilibrium with each other. In conclusion, the current study did not identify any SNPs that were associated with idiopathic ONFH at a genome-wide significance level, however, the results suggest that future studies should investigate the effects of SNPs in the DNAJC6 gene on the idiopathic ONFH risk.
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Affiliation(s)
- Seung-Hoon Baek
- Department of Orthopedic Surgery, Graduate School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
| | - Kang-Il Kim
- Department of Orthopedic Surgery, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung-Sik Yoon
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Tae-Ho Kim
- Biomedical Research Institute, Kyungpook National University Hospital, Daegu 41940, Republic of Korea
| | - Shin-Yoon Kim
- Department of Orthopedic Surgery, Graduate School of Medicine, Kyungpook National University, Daegu 41944, Republic of Korea
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131
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Clinically used selective estrogen receptor modulators affect different steps of macrophage-specific reverse cholesterol transport. Sci Rep 2016; 6:32105. [PMID: 27601313 PMCID: PMC5013287 DOI: 10.1038/srep32105] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 07/29/2016] [Indexed: 11/19/2022] Open
Abstract
Selective estrogen receptor modulators (SERMs) are widely prescribed drugs that alter cellular and whole-body cholesterol homeostasis. Here we evaluate the effect of SERMs on the macrophage-specific reverse cholesterol transport (M-RCT) pathway, which is mediated by HDL. Treatment of human and mouse macrophages with tamoxifen, raloxifene or toremifene induced the accumulation of cytoplasmic vesicles of acetyl-LDL-derived free cholesterol. The SERMs impaired cholesterol efflux to apolipoprotein A-I and HDL, and lowered ABCA1 and ABCG1 expression. These effects were not altered by the antiestrogen ICI 182,780 nor were they reproduced by 17β-estradiol. The treatment of mice with tamoxifen or raloxifene accelerated HDL-cholesteryl ester catabolism, thereby reducing HDL-cholesterol concentrations in serum. When [3H]cholesterol-loaded macrophages were injected into mice intraperitoneally, tamoxifen, but not raloxifene, decreased the [3H]cholesterol levels in serum, liver and feces. Both SERMs downregulated liver ABCG5 and ABCG8 protein expression, but tamoxifen reduced the capacity of HDL and plasma to promote macrophage cholesterol efflux to a greater extent than raloxifene. We conclude that SERMs interfere with intracellular cholesterol trafficking and efflux from macrophages. Tamoxifen, but not raloxifene, impair M-RCT in vivo. This effect is primarily attributable to the tamoxifen-mediated reduction of the capacity of HDL to promote cholesterol mobilization from macrophages.
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132
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Wang Y, Wang ZQ, Wang FH, Lei XF, Yan SM, Wang DS, Zhang F, Xu RH, Wang LY, Li YH. Predictive value of chemotherapy-related high-density lipoprotein cholesterol (HDL) elevation in patients with colorectal cancer receiving adjuvant chemotherapy: an exploratory analysis of 851 cases. Oncotarget 2016; 7:57290-57300. [PMID: 27344180 PMCID: PMC5302989 DOI: 10.18632/oncotarget.10145] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 06/03/2016] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The phenomenon of chemotherapy-related lipid alterations has been reported based on a small number of patients and varies among different cancers. However, little is known about these alterations in colorectal cancer (CRC) patients. RESULTS Patients in cohort 1, but not in cohort 2, exhibited significantly increased cholesterol, triglyceride, HDL-C, and ApoA-I levels, and decreased LDL-C and ApoB levels after adjuvant chemotherapy. Patients with chemotherapy-related HDL-C elevation exhibited better 3-year DFS (84.5% vs. 73%, P = 0.001) and 7-year OS (82% vs. 70%, P = 0.002) than those without. Similarly, the 3-year DFS (83.3% vs. 77.6%, P = 0.008) and 7-year OS (81% vs. 74.6%, P = 0.040) were superior in chemotherapy-related ApoA-I elevation patients. However, only HDL-C elevation remained an independent prognostic value in the multivariate Cox model. METHODS Eight hundred fifty-one CRC patients with curative-intent resection were retrospectively analyzed. Six hundred sixty-seven receiving fluoropyrimidine-based adjuvant chemotherapy for more than 3 months were enrolled in cohort 1. The lipid alterations before and after chemotherapy were studied. Simultaneously, 184 patients not treated with chemotherapy (cohort 2) were included as a control for the comparisons of lipids alterations within 1 month after resection and at half-year follow-up. Furthermore, these significant alterations were investigated with respect to the prognostic value of disease-free survival (DFS) and overall survival (OS). An internal validation was performed. CONCLUSION We observed significant changes in the levels of various lipids in CRC patients receiving adjuvant chemotherapy. Furthermore, chemotherapy-related HDL-C elevation was determined to be an independent prognostic indicator for superior DFS and OS.
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Affiliation(s)
- Yun Wang
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Zhi-qiang Wang
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Feng-hua Wang
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Xue-fen Lei
- Department of Medical Oncology, The Second Affiliated Hospital of Kunming Medical University, Kunming, P.R. China
| | - Shu-mei Yan
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - De-shen Wang
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Fei Zhang
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Rui-hua Xu
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
| | - Ling-yun Wang
- Department of Gastroenterology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, P.R. China
| | - Yu-hong Li
- Sate Key Laboratory of Oncology in South China, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P.R. China
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China
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133
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Cheng HY, Gaddis DE, Wu R, McSkimming C, Haynes LD, Taylor AM, McNamara CA, Sorci-Thomas M, Hedrick CC. Loss of ABCG1 influences regulatory T cell differentiation and atherosclerosis. J Clin Invest 2016; 126:3236-46. [PMID: 27482882 DOI: 10.1172/jci83136] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 06/02/2016] [Indexed: 01/09/2023] Open
Abstract
ATP-binding cassette transporter G1 (ABCG1) promotes cholesterol accumulation and alters T cell homeostasis, which may contribute to progression of atherosclerosis. Here, we investigated how the selective loss of ABCG1 in T cells impacts atherosclerosis in LDL receptor-deficient (LDLR-deficient) mice, a model of the disease. In LDLR-deficient mice fed a high-cholesterol diet, T cell-specific ABCG1 deficiency protected against atherosclerotic lesions. Furthermore, T cell-specific ABCG1 deficiency led to a 30% increase in Treg percentages in aorta and aorta-draining lymph nodes (LNs) of these mice compared with animals with only LDLR deficiency. When Abcg1 was selectively deleted in Tregs of LDLR-deficient mice, we observed a 30% increase in Treg percentages in aorta and aorta-draining LNs and reduced atherosclerosis. In the absence of ABCG1, intracellular cholesterol accumulation led to downregulation of the mTOR pathway, which increased the differentiation of naive CD4 T cells into Tregs. The increase in Tregs resulted in reduced T cell activation and increased IL-10 production by T cells. Last, we found that higher ABCG1 expression in Tregs was associated with a higher frequency of these cells in human blood samples. Our study indicates that ABCG1 regulates T cell differentiation into Tregs, highlighting a pathway by which cholesterol accumulation can influence T cell homeostasis in atherosclerosis.
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134
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Torres-Castro I, Arroyo-Camarena ÚD, Martínez-Reyes CP, Gómez-Arauz AY, Dueñas-Andrade Y, Hernández-Ruiz J, Béjar YL, Zaga-Clavellina V, Morales-Montor J, Terrazas LI, Kzhyshkowska J, Escobedo G. Human monocytes and macrophages undergo M1-type inflammatory polarization in response to high levels of glucose. Immunol Lett 2016; 176:81-9. [DOI: 10.1016/j.imlet.2016.06.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 05/27/2016] [Accepted: 06/03/2016] [Indexed: 12/17/2022]
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135
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Wang Y, Liu H, Ready NE, Su L, Wei Y, Christiani DC, Wei Q. Genetic variants in ABCG1 are associated with survival of nonsmall-cell lung cancer patients. Int J Cancer 2016; 138:2592-601. [PMID: 26757251 PMCID: PMC5294935 DOI: 10.1002/ijc.29991] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 12/14/2015] [Indexed: 01/01/2023]
Abstract
Cell membrane transporters and metabolic enzymes play a crucial role in the transportation of a wide variety of substrates that maintain homeostasis in biological processes. We explored associations between genetic variants in these genes and survival of nonsmall-cell lung cancer (NSCLC) patients by reanalyzing two datasets from published genome-wide association studies (GWASs). In the discovery by using the GWAS dataset of the Prostate, Lung, Colorectal and Ovarian (PLCO) Cancer Screening Trial, we evaluated associations of 1,245 single-nucleotide polymorphisms (SNPs) in genes of four transporter families and two metabolic enzyme families with survival of 1,185 NSCLC patients. We then performed a replication analysis in the Harvard University Lung Cancer study (LCS) with 984 NSCLC patients. Multivariate Cox proportional hazards regression and false discovery rate (FDR) corrections were performed to evaluate the associations. We identified that 21 genotyped SNPs in eight gene regions were significantly associated with survival with FDR ≤ 0.1 in the discovery dataset. Subsequently, we confirmed six SNPs, which were putative functional, in ABCG1 of the ATP-binding cassette transporter family in the replication dataset. In the pooled analysis, two tagging (at r(2) > 0.8 for linkage disequilibrium with other replicated SNPs)/functional SNPs were independently associated with survival: rs225388 G > A [adjusted hazards ratio (HR) = 1.12, 95% confidence interval (CI) = 1.03-1.20, Ptrend = 4.6 × 10(-3)] and rs225390 A > G (adjusted HR = 1.16, 95% CI = 1.07-1.25, Ptrend = 3.8 × 10(-4) ). Our results indicated that genetic variants of ABCG1 may be predictors of survival of NSCLC patients.
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Affiliation(s)
- Yanru Wang
- Duke Cancer Institute, Duke University Medical Center,
Durham, NC 27710, USA
- Department of Medicine, Duke University School of Medicine,
Durham, NC 27710, USA
| | - Hongliang Liu
- Duke Cancer Institute, Duke University Medical Center,
Durham, NC 27710, USA
- Department of Medicine, Duke University School of Medicine,
Durham, NC 27710, USA
| | - Neal E. Ready
- Duke Cancer Institute, Duke University Medical Center,
Durham, NC 27710, USA
- Department of Medicine, Duke University School of Medicine,
Durham, NC 27710, USA
| | - Li Su
- Departments of Environmental Health and Department of
Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA
| | - Yongyue Wei
- Departments of Environmental Health and Department of
Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA
| | - David C. Christiani
- Departments of Environmental Health and Department of
Epidemiology, Harvard School of Public Health, Boston, MA 02115, USA
- Department of Medicine, Massachusetts General Hospital,
Boston, MA 02114, USA
| | - Qingyi Wei
- Duke Cancer Institute, Duke University Medical Center,
Durham, NC 27710, USA
- Department of Medicine, Duke University School of Medicine,
Durham, NC 27710, USA
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136
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Ge Z, Zhu W, Peng J, Deng X, Li C. Persimmon tannin regulates the expression of genes critical for cholesterol absorption and cholesterol efflux by LXRα independent pathway. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.02.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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137
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Baek AE, Nelson ER. The Contribution of Cholesterol and Its Metabolites to the Pathophysiology of Breast Cancer. Discov Oncol 2016; 7:219-28. [PMID: 27020054 DOI: 10.1007/s12672-016-0262-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 03/17/2016] [Indexed: 02/07/2023] Open
Abstract
As the most common cancer in women, one in eight will develop invasive breast cancer over their lifetime making it the second most common cause of cancer-related death among women. Of the many known risk factors for developing breast cancer, obesity stands out as prominent and modifiable. Interestingly, elevated cholesterol is highly associated with obesity and has emerged as an independent risk factor for breast cancer onset and recurrence. This indicates that cholesterol also contributes to the breast cancer pathogenicity of obesity. This review highlights our current understanding of the mechanisms by which cholesterol impacts breast cancer. Key preclinical studies have been highlighted, including the discussion of homeostatic control of cholesterol levels, signaling by cholesterol metabolites through the estrogen receptors, cholesterol formation of lipid rafts and subsequent signaling, and the potential roles of cholesterol in creating a pro-inflammatory tumor microenvironment. Future directions and avenues for therapeutic exploitation are also considered.
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Affiliation(s)
- Amy E Baek
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, 407 S. Goodwin Ave (MC-114), Urbana, IL, 61801, USA
| | - Erik R Nelson
- Department of Molecular and Integrative Physiology, University of Illinois at Urbana-Champaign, 407 S. Goodwin Ave (MC-114), Urbana, IL, 61801, USA. .,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA. .,University of Illinois Cancer Center, Chicago, IL, USA.
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138
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Gu X, Huang Y, Levison BS, Gerstenecker G, DiDonato AJ, Hazen LB, Lee J, Gogonea V, DiDonato JA, Hazen SL. Identification of Critical Paraoxonase 1 Residues Involved in High Density Lipoprotein Interaction. J Biol Chem 2015; 291:1890-1904. [PMID: 26567339 DOI: 10.1074/jbc.m115.678334] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Indexed: 11/06/2022] Open
Abstract
Paraoxonase 1 (PON1) is a high density lipoprotein (HDL)-associated protein with atherosclerosis-protective and systemic anti-oxidant functions. We recently showed that PON1, myeloperoxidase, and HDL bind to one another in vivo forming a functional ternary complex (Huang, Y., Wu, Z., Riwanto, M., Gao, S., Levison, B. S., Gu, X., Fu, X., Wagner, M. A., Besler, C., Gerstenecker, G., Zhang, R., Li, X. M., Didonato, A. J., Gogonea, V., Tang, W. H., et al. (2013) J. Clin. Invest. 123, 3815-3828). However, specific residues on PON1 involved in the HDL-PON1 interaction remain unclear. Unambiguous identification of protein residues involved in docking interactions to lipid surfaces poses considerable methodological challenges. Here we describe a new strategy that uses a novel synthetic photoactivatable and click chemistry-taggable phospholipid probe, which, when incorporated into HDL, was used to identify amino acid residues on PON1 that directly interact with the lipoprotein phospholipid surface. Several specific PON1 residues (Leu-9, Tyr-185, and Tyr-293) were identified through covalent cross-links with the lipid probes using affinity isolation coupled to liquid chromatography with on-line tandem mass spectrometry. Based upon the crystal structure for PON1, the identified residues are all localized in relatively close proximity on the surface of PON1, defining a domain that binds to the HDL lipid surface. Site-specific mutagenesis of the identified PON1 residues (Leu-9, Tyr-185, and Tyr-293), coupled with functional studies, reveals their importance in PON1 binding to HDL and both PON1 catalytic activity and stability. Specifically, the residues identified on PON1 provide important structural insights into the PON1-HDL interaction. More generally, the new photoactivatable and affinity-tagged lipid probe developed herein should prove to be a valuable tool for identifying contact sites supporting protein interactions with lipid interfaces such as found on cell membranes or lipoproteins.
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Affiliation(s)
- Xiaodong Gu
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and
| | - Ying Huang
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and
| | - Bruce S Levison
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and
| | - Gary Gerstenecker
- the Department of Chemistry, Cleveland State University, Cleveland, Ohio 44115
| | - Anthony J DiDonato
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and
| | - Leah B Hazen
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and.
| | - Joonsue Lee
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and
| | - Valentin Gogonea
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and; the Department of Chemistry, Cleveland State University, Cleveland, Ohio 44115
| | - Joseph A DiDonato
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and
| | - Stanley L Hazen
- From the Department of Cellular and Molecular Medicine, Center for Cardiovascular Diagnostics and Prevention, and; Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio 44195 and
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139
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Zamanian-Daryoush M, DiDonato JA. Apolipoprotein A-I and Cancer. Front Pharmacol 2015; 6:265. [PMID: 26617517 PMCID: PMC4642354 DOI: 10.3389/fphar.2015.00265] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 10/23/2015] [Indexed: 12/22/2022] Open
Abstract
High-density lipoprotein (HDL) and apolipoprotein A-I (apoA-I), the predominant protein in plasma HDL, have long been the focus of intense studies in the field of atherosclerosis and cardiovascular disease. ApoA-I, in large part, is responsible for HDL assembly and its main atheroprotective function, that of shuttling excess cholesterol from peripheral tissues to the liver for excretion (reverse cholesterol transport). Recently, a protective role for HDL in cancer was suggested from several large clinical studies where an inverse relationship between plasma HDL-cholesterol (HDL-C) levels and risk of developing cancer was noted. This notion has now been tested and found to be supported in mouse tumor studies, where increasing levels of apoA-I/HDL were discovered to protect against tumor development and provision of human apoA-I was therapeutic against established tumors. This mini-review discusses the emerging role of apoA-I in tumor biology and its potential as cancer therapeutic.
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Affiliation(s)
- Maryam Zamanian-Daryoush
- Department of Cellular and Molecular Medicine, and Center for Cardiovascular Diagnostics and Prevention, Cleveland Clinic, Cleveland OH, USA
| | - Joseph A DiDonato
- Department of Cellular and Molecular Medicine, and Center for Cardiovascular Diagnostics and Prevention, Cleveland Clinic, Cleveland OH, USA
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140
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Tan HY, Wang N, Man K, Tsao SW, Che CM, Feng Y. Autophagy-induced RelB/p52 activation mediates tumour-associated macrophage repolarisation and suppression of hepatocellular carcinoma by natural compound baicalin. Cell Death Dis 2015; 6:e1942. [PMID: 26492375 PMCID: PMC4632300 DOI: 10.1038/cddis.2015.271] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Revised: 08/06/2015] [Accepted: 08/24/2015] [Indexed: 12/16/2022]
Abstract
The plasticity of tumour-associated macrophages (TAMs) has implicated an influential role in hepatocellular carcinoma (HCC). Repolarisation of TAM towards M1 phenotype characterises an immune-competent microenvironment that favours tumour regression. To investigate the role and mechanism of TAM repolarisation in suppression of HCC by a natural compound baicalin, Orthotopic HCC implantation model was used to investigate the effect of baicalin on HCC; liposome-clodronate was introduced to suppress macrophage populations in mice; bone marrow-derived monocytes (BMDMs) were induced to unpolarised, M1-like, M2-like macrophages and TAM using different conditioned medium. We observed that oral administration of baicalin (50 mg/kg) completely blocked orthotopic growth of implanted HCC. Suppression of HCC by baicalin was diminished when mice macrophage was removed by clodronate treatment. Baicalin induced repolarisation of TAM to M1-like phenotype without specific toxicity to either phenotype of macrophages. Baicalin initiated TAM reprogramming to M1-like macrophage, and promoted pro-inflammatory cytokines production. Co-culturing of HCC cells with baicalin-treated TAMs resulted in reduced proliferation and motility in HCC. Baicalin had minimal effect on derivation of macrophage polarisation factors by HCC cells, while directly induced repolarisation of TAM and M2-like macrophage. This effect was associated with elevated autophagy, and transcriptional activation of RelB/p52 pathway. Suppression of autophagy or RelB abolished skewing of baicalin-treated TAM. Autophagic degradation of TRAF2 in baicalin-treated TAM might be responsible for RelB/p52 activation. Our findings unveil the essential role of TAM repolarisation in suppressive effect of baicalin on HCC, which requires autophagy-associated activation of RelB/p52.
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Affiliation(s)
- H-Y Tan
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - N Wang
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
| | - K Man
- Department of Surgery, The University of Hong Kong, Hong Kong, China
| | - S-W Tsao
- Department of Anatomy, The University of Hong Kong, Hong Kong, China
| | - C-M Che
- State Key Laboratory of Synthetic Chemistry, Chemical Biology Center and Department of Chemistry, The University of Hong Kong, Hong Kong, China
| | - Y Feng
- School of Chinese Medicine, The University of Hong Kong, Hong Kong, China
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141
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Aleidi SM, Howe V, Sharpe LJ, Yang A, Rao G, Brown AJ, Gelissen IC. The E3 ubiquitin ligases, HUWE1 and NEDD4-1, are involved in the post-translational regulation of the ABCG1 and ABCG4 lipid transporters. J Biol Chem 2015; 290:24604-13. [PMID: 26296893 DOI: 10.1074/jbc.m115.675579] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Indexed: 11/06/2022] Open
Abstract
The ATP-binding cassette transporter ABCG1 has an essential role in cellular cholesterol homeostasis, and dysregulation has been associated with a number of high burden diseases. Previous studies reported that ABCG1 is ubiquitinated and degraded via the ubiquitin proteasome system. However, so far the molecular mechanism, including the identity of any of the rate-limiting ubiquitination enzymes, or E3 ligases, is unknown. Using liquid chromatography mass spectrometry, we identified two HECT domain E3 ligases associated with ABCG1, named HUWE1 (HECT, UBA, and WWE domain containing 1, E3 ubiquitin protein ligase) and NEDD4-1 (Neural precursor cell-expressed developmentally down regulated gene 4), of which the latter is the founding member of the NEDD4 family of ubiquitin ligases. Silencing both HUWE1 and NEDD4-1 in cells overexpressing human ABCG1 significantly increased levels of the ABCG1 monomeric and dimeric protein forms, however ABCA1 protein expression was unaffected. In addition, ligase silencing increased ABCG1-mediated cholesterol export to HDL in cells overexpressing the transporter as well as in THP-1 macrophages. Reciprocally, overexpression of both ligases resulted in a significant reduction in protein levels of both the ABCG1 monomeric and dimeric forms. Like ABCG1, ABCG4 protein levels and cholesterol export activity were significantly increased after silencing both HUWE1 and NEDD4-1 in cells overexpressing this closely related ABC half-transporter. In summary, we have identified for the first time two E3 ligases that are fundamental enzymes in the post-translational regulation of ABCG1 and ABCG4 protein levels and cellular cholesterol export activity.
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Affiliation(s)
- Shereen M Aleidi
- From the Faculty of Pharmacy, The University of Sydney, Sydney NSW 2006 and
| | - Vicky Howe
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney NSW 2052 Australia
| | - Laura J Sharpe
- From the Faculty of Pharmacy, The University of Sydney, Sydney NSW 2006 and School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney NSW 2052 Australia
| | - Alryel Yang
- From the Faculty of Pharmacy, The University of Sydney, Sydney NSW 2006 and
| | - Geetha Rao
- From the Faculty of Pharmacy, The University of Sydney, Sydney NSW 2006 and
| | - Andrew J Brown
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney NSW 2052 Australia
| | - Ingrid C Gelissen
- From the Faculty of Pharmacy, The University of Sydney, Sydney NSW 2006 and
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