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Radhakrishna U, Radhakrishnan R, Uppala LV, Muvvala SB, Prajapati J, Rawal RM, Bahado-Singh RO, Sadhasivam S. Prenatal opioid exposure significantly impacts placental protein kinase C (PKC) and drug transporters, leading to drug resistance and neonatal opioid withdrawal syndrome. Front Neurosci 2024; 18:1442915. [PMID: 39238930 PMCID: PMC11376091 DOI: 10.3389/fnins.2024.1442915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Accepted: 07/23/2024] [Indexed: 09/07/2024] Open
Abstract
Background Neonatal Opioid Withdrawal Syndrome (NOWS) is a consequence of in-utero exposure to prenatal maternal opioids, resulting in the manifestation of symptoms like irritability, feeding problems, tremors, and withdrawal signs. Opioid use disorder (OUD) during pregnancy can profoundly impact both mother and fetus, disrupting fetal brain neurotransmission and potentially leading to long-term neurological, behavioral, and vision issues, and increased infant mortality. Drug resistance complicates OUD and NOWS treatment, with protein kinase regulation of drug transporters not fully understood. Methods DNA methylation levels of ATP-binding cassette (ABC) and solute carrier (SLC) drug transporters, along with protein kinase C (PKC) genes, were assessed in 96 placental samples using the Illumina Infinium MethylationEPIC array (850K). Samples were collected from three distinct groups: 32 mothers with infants prenatally exposed to opioids who needed pharmacological intervention for NOWS, 32 mothers with prenatally opioid-exposed infants who did not necessitate NOWS treatment, and 32 mothers who were not exposed to opioids during pregnancy. Results We identified 69 significantly differentially methylated SLCs, with 24 hypermethylated and 34 hypomethylated, and 11 exhibiting both types of methylation changes including SLC13A3, SLC15A2, SLC16A11, SLC16A3, SLC19A2, and SLC26A1. We identified methylation changes in 11 ABC drug transporters (ABCA1, ABCA12, ABCA2, ABCB10, ABCB5, ABCC12, ABCC2, ABCC9, ABCE1, ABCC7, ABCB3): 3 showed hypermethylation, 3 hypomethylation, and 5 exhibited both. Additionally, 7 PKC family genes (PRKCQ, PRKAA1, PRKCA, PRKCB, PRKCH, PRKCI, and PRKCZ) showed methylation changes. These genes are associated with 13 pathways involved in NOWS, including ABC transporters, bile secretion, pancreatic secretion, insulin resistance, glutamatergic synapse, and gastric acid secretion. Conclusion We report epigenetic changes in PKC-related regulation of drug transporters, which could improve our understanding of clinical outcomes like drug resistance, pharmacokinetics, drug-drug interactions, and drug toxicity, leading to maternal relapse and severe NOWS. Novel drugs targeting PKC pathways and transporters may improve treatment outcomes for OUD in pregnancy and NOWS.
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Affiliation(s)
- Uppala Radhakrishna
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA, United States
- Department of Obstetrics and Gynecology, Corewell Health William Beaumont University Hospital, Royal Oak, MI, United States
| | - Rupa Radhakrishnan
- Department of Radiology and Imaging Sciences, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Lavanya V Uppala
- College of Information Science & Technology, the University of Nebraska at Omaha, Peter Kiewit Institute, Omaha, NE, United States
| | - Srinivas B Muvvala
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, United States
| | - Jignesh Prajapati
- Department of Biochemistry & Forensic Sciences, Gujarat University, Ahmedabad, India
| | - Rakesh M Rawal
- Department of Medical Biotechnology, Gujarat Biotechnology University, Gandhinagar, Gujarat, India
| | - Ray O Bahado-Singh
- Department of Obstetrics and Gynecology, Corewell Health William Beaumont University Hospital, Royal Oak, MI, United States
| | - Senthilkumar Sadhasivam
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh, Pittsburgh, PA, United States
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Zhao D, Han X, Mu Q, Wu Y, Shan L, Su L, Wang W, Wang P, Kang Y, Wang F. Association of cerebrospinal fluid NPY with peripheral ApoA: a moderation effect of BMI. Nutr Metab (Lond) 2024; 21:52. [PMID: 39054540 PMCID: PMC11270855 DOI: 10.1186/s12986-024-00828-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 07/08/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Apoprotein A-I (ApoA-I) and Apoprotein B (ApoB) have emerged as novel cardiovascular risk biomarkers influenced by feeding behavior. Hypothalamic appetite peptides regulate feeding behavior and impact lipoprotein levels, which effects vary in different weight states. This study explores the intricate relationship between body mass index (BMI), hypothalamic appetite peptides, and apolipoproteins with emphasis on the moderating role of body weight in the association between neuropeptide Y (NPY), ghrelin, orexin A (OXA), oxytocin in cerebrospinal fluid (CSF) and peripheral ApoA-I and ApoB. METHODS In this cross-sectional study, we included participants with a mean age of 31.77 ± 10.25 years, categorized into a normal weight (NW) (n = 73) and an overweight/obese (OW/OB) (n = 117) group based on BMI. NPY, ghrelin, OXA, and oxytocin levels in CSF were measured. RESULTS In the NW group, peripheral ApoA-I levels were higher, while ApoB levels were lower than in the OW/OB group (all p < 0.05). CSF NPY exhibited a positive correlation with peripheral ApoA-I in the NW group (r = 0.39, p = 0.001). Notably, participants with higher CSF NPY levels had higher peripheral ApoA-I levels in the NW group and lower peripheral ApoA-I levels in the OW/OB group, showing the significant moderating effect of BMI on this association (R2 = 0.144, β=-0.54, p < 0.001). The correlation between ghrelin, OXA and oxytocin in CSF and peripheral ApoB in both groups exhibited opposing trends (Ghrelin: r = -0.03 and r = 0.04; OXA: r = 0.23 and r=-0.01; Oxytocin: r=-0.09 and r = 0.04). CONCLUSION This study provides hitherto undocumented evidence that BMI moderates the relationship between CSF NPY and peripheral ApoA-I levels. It also reveals the protective role of NPY in the NW population, contrasting with its risk factor role in the OW/OB population, which was associated with the at-risk for cardiovascular disease.
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Affiliation(s)
- Danyang Zhao
- Medical Neurobiology Lab, Inner Mongolia Medical University, Huhhot, 010110, China
| | - Xiaoli Han
- Clinical Nutrition Department, Friendship hospital of Urumqi in Xinjiang, Urumqi, 830049, China
| | - Qingshuang Mu
- Xinjiang Key Laboratory of Neurological Disorder Research, the Second Affiliated Hospital of Xinjiang Medical University, Urumqi, 830063, China
| | - Yan Wu
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, 100096, China
| | - Ligang Shan
- Department of Anesthesiology, the Second Affiliated Hospital of Xiamen Medical College, Xiamen, 361021, China
| | - Lidong Su
- Department of Anesthesiology, the Third Affiliated Hospital of Inner Mongolia Medical University, BaoGang Hospital, Baotou, 014010, China
| | - Wenyan Wang
- School of Pharmacy, Yantai University, Yantai, 264005, China
| | - Pengxiang Wang
- Medical Neurobiology Lab, Inner Mongolia Medical University, Huhhot, 010110, China
| | - Yimin Kang
- Medical Neurobiology Lab, Inner Mongolia Medical University, Huhhot, 010110, China.
| | - Fan Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, 100096, China.
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Duan M, Xu H, Guo W, Yang H, Duan Y, Wang C. Life cycle assessment of hepatotoxicity induced by cyhalofop-butyl in environmental concentrations on zebrafish in light of gut-liver axis. ENVIRONMENTAL RESEARCH 2024; 252:119135. [PMID: 38740291 DOI: 10.1016/j.envres.2024.119135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/22/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024]
Abstract
Cyhalofop-butyl (CB) poses a significant threat to aquatic organisms, but there is a discrepancy in evidence about hepatotoxicity after prolonged exposure to environmental levels. The aim of this study was to investigate long-term hepatotoxicity and its effects on the gut-liver axis through the exposure of zebrafish to environmental concentrations of CB (0.1,1,10 μg/L) throughout their life cycle. Zebrafish experienced abnormal obesity symptoms and organ index after a prolonged exposure of 120 days. The gut-liver axis was found to be damaged both morphologically and functionally through an analysis of histology, electron microscopy subcellular structure, and liver function. The disruption of the gut-liver axis inflammatory process by CB is suggested by the rise in inflammatory factors and the alteration of inflammatory genes. Furthermore, there was a noticeable alteration in the blood and gut-liver axis biochemical parameters as well as gene expression linked to lipid metabolism, which may led to an imbalance in the gut flora. In conclusion, the connection between the gut-liver axis, intestinal microbiota, and liver leads to the metabolic dysfunction of zebrafish exposed to long-term ambient concentrations of CB, and damaged immune system and liver lipid metabolism. This study gives another knowledge into the hepatotoxicity component of long haul openness to ecological centralization of CB, and might be useful to assess the potential natural and wellbeing dangers of aryloxyphenoxypropionate herbicides.
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Affiliation(s)
- Manman Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing, 100193, China
| | - Hao Xu
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing, 100193, China
| | - Wenli Guo
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing, 100193, China
| | - Hui Yang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing, 100193, China
| | - Yuting Duan
- School of Kinesiology and Health, Capital University of Physical Education and Sports, Beijing, 100191, China
| | - Chengju Wang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Sciences, China Agricultural University, Beijing, 100193, China.
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Xing J, Wang K, Xu YC, Pei ZJ, Yu QX, Liu XY, Dong YL, Li SF, Chen Y, Zhao YJ, Yao F, Ding J, Hu W, Zhou RP. Efferocytosis: Unveiling its potential in autoimmune disease and treatment strategies. Autoimmun Rev 2024; 23:103578. [PMID: 39004157 DOI: 10.1016/j.autrev.2024.103578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 07/06/2024] [Accepted: 07/07/2024] [Indexed: 07/16/2024]
Abstract
Efferocytosis is a crucial process whereby phagocytes engulf and eliminate apoptotic cells (ACs). This intricate process can be categorized into four steps: (1) ACs release "find me" signals to attract phagocytes, (2) phagocytosis is directed by "eat me" signals emitted by ACs, (3) phagocytes engulf and internalize ACs, and (4) degradation of ACs occurs. Maintaining immune homeostasis heavily relies on the efficient clearance of ACs, which eliminates self-antigens and facilitates the generation of anti-inflammatory and immunosuppressive signals that maintain immune tolerance. However, any disruptions occurring at any of the efferocytosis steps during apoptosis can lead to a diminished efficacy in removing apoptotic cells. Factors contributing to this inefficiency encompass dysregulation in the release and recognition of "find me" or "eat me" signals, defects in phagocyte surface receptors, bridging molecules, and other signaling pathways. The inadequate clearance of ACs can result in their rupture and subsequent release of self-antigens, thereby promoting immune responses and precipitating the onset of autoimmune diseases such as systemic lupus erythematosus, rheumatoid arthritis, type 1 diabetes, and multiple sclerosis. A comprehensive understanding of the efferocytosis process and its implications can provide valuable insights for developing novel therapeutic strategies that target this process to prevent or treat autoimmune diseases.
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Affiliation(s)
- Jing Xing
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ke Wang
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Yu-Cai Xu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ze-Jun Pei
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Qiu-Xia Yu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Xing-Yu Liu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Ya-Lu Dong
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; School of pharmacy, Anhui Medical University, Hefei 230032, China
| | - Shu-Fang Li
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Yong Chen
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Ying-Jie Zhao
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Feng Yao
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Jie Ding
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China
| | - Wei Hu
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Ministry of Education, Hefei 230032, China.
| | - Ren-Peng Zhou
- Department of Clinical Pharmacology, the Second Affiliated Hospital of Anhui Medical University, Hefei 230601, China; The Key Laboratory of Anti-inflammatory and Immune Medicine, Anhui Medical University, Ministry of Education, Hefei 230032, China.
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Li B, Zhou X, Liu Y, Zhang Y, Mu Y. Remnant Cholesterol is More Strongly Associated with Arterial Stiffness than Traditional Lipids and Lipid Ratios in the General Chinese Population. J Atheroscler Thromb 2024; 31:587-602. [PMID: 38171806 PMCID: PMC11079499 DOI: 10.5551/jat.64146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 10/22/2023] [Indexed: 01/05/2024] Open
Abstract
AIM Studies on the relationship between remnant cholesterol (RC) and arterial stiffness (AS) are limited. This study aims to investigate the relationship between RC and AS and to explore RC, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), triglycerides (TG), non-HDL-C, LDL-C/HDL-C, TG/HDL-C, lipoprotein combine index (LCI), and TC/HDL-C, which are lipid parameters most strongly associated with AS. METHODS A total of 4653 participants from the REACTION (Risk Evaluation of Cancers in Chinese Diabetic Individuals) study were recruited. AS was defined as a brachial-ankle pulse wave velocity of ≥ 1400 cm/s. Multiple logistic regression analyses were performed to detect its association with lipid parameters (RC, TG, TC, HDL-C, LDL-C, non-HDL-C, LDL-C/HDL-C, TG/HDL-C, LCI, and TC/HDL-C). RESULTS Logistic regression analysis showed that compared with other traditional or non-traditional lipid parameters, the association between RC and AS was the strongest (odds ratio (OR) 1.59, 95% confidence interval (CI) 1.30-1.95, P<0.001). In the stratified analysis, RC was significantly associated with AS in both sexes and at any age, as well as blood glucose, blood pressure, and body mass index levels. Besides, RC and AS were still significantly associated when TG<1.7 mmol/L (OR:1.58, 95% CI: 1.02-2.45, P=0.04), LDL-C <3.4 mmol/L (OR:1.32, 95% CI: 1.01-1.73, P=0.041), HDL-C ≥ 1.0 mmol/L (OR:1.67, 95% CI: 1.34-2.08, P<0.001), or non-HDL-C<4.1 mmol/L (OR: 1.42, 95% CI: 1.10-1.82, P=0.007) are controlled within the appropriate range. CONCLUSION In conclusion, compared with traditional lipids and lipid ratios, RC is more strongly associated with AS. The association between RC and AS remains significant even when TG, LDL-C, HDL-C, or non-HDL-C levels are controlled within the appropriate range.
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Affiliation(s)
- Binqi Li
- School of Medicine, Nankai University, Tianjin, China
- Department of Endocrinology, First medical center of PLA General Hospital, Beijing, China
| | - Xin Zhou
- Graduate School, Chinese PLA General Hospital, Beijing, China
- Department of Medical Oncology, Senior Department of Oncology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, China>
- The Second Medical Center of Chinese PLA General Hospital, Beijing, China>
| | - Yang Liu
- Department of Endocrinology, Eighth Medical Center of PLA General Hospital, Beijing, China
| | - Yue Zhang
- Department of Endocrinology, First medical center of PLA General Hospital, Beijing, China
| | - Yiming Mu
- School of Medicine, Nankai University, Tianjin, China
- Department of Endocrinology, First medical center of PLA General Hospital, Beijing, China
- Graduate School, Chinese PLA General Hospital, Beijing, China
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Zhong M, Wu Z, Chen Z, Wu L, Zhou J. Geniposide alleviates cholesterol-induced endoplasmic reticulum stress and apoptosis in osteoblasts by mediating the GLP-1R/ABCA1 pathway. J Orthop Surg Res 2024; 19:179. [PMID: 38468352 PMCID: PMC10926581 DOI: 10.1186/s13018-024-04665-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/04/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND Cholesterol (CHO) is an essential component of the body. However, high CHO levels in the body can damage bone mass and promote osteoporosis. CHO accumulation can cause osteoblast apoptosis, which has a negative effect on bone formation. The pathogenesis of osteoporosis is a complicate process that includes oxidative stress, endoplasmic reticulum (ER) stress, and inflammation. Geniposide (GEN) is a natural compound with anti-osteoporotic effect. However, the roles of GEN in osteopathogenesis are still unclear. Our previous studies demonstrated that GEN could reduce the accumulation of CHO in osteoblasts and the activation of ER stress in osteoblasts. However, the molecular mechanism of GEN in inhibiting CHO-induced apoptosis in osteoblasts needs to be further investigated. METHODS MC3T3-E1 cells were treated with osteogenic induction medium (OIM). Ethanol-solubilized cholesterol (100 µM) was used as a stimulator, and 10 µM and 25 µM geniposide was added for treatment. The alterations of protein expression were detected by western blot, and the cell apoptosis was analyzed by a flow cytometer. RESULTS CHO promoted osteoblast apoptosis by activating ER stress in osteoblasts, while GEN alleviated the activation of ER stress and reduced osteoblast apoptosis by activating the GLP-1R/ABCA1 pathway. Inhibition of ABCA1 or GLP-1R could eliminate the protective activity of GEN against CHO-induced ER stress and osteoblast apoptosis. CONCLUSION GEN alleviated CHO-induced ER stress and apoptosis in osteoblasts by mediating the GLP-1R/ABCA1 pathway.
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Affiliation(s)
- Mingliang Zhong
- College of Rehabilitation, Gannan Medical University, Ganzhou, 341000, China
| | - Zhenyu Wu
- First Affiliated Hospital of Gannan Medical University, Ganzhou, 341000, China
| | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Longhuo Wu
- College of Pharmacy, Gannan Medical University, Ganzhou, 341000, China
| | - Jianguo Zhou
- Department of Joint Surgery, Ganzhou People's Hospital, Ganzhou, 341000, China.
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Hao P, Han L, Wu Y, Wang Y, Ruan S, Liu Z, Zhang W, Ding J. TMT-based proteomics analysis of sea urchin (Strongylocentrotus intermedius) under high temperature stress. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2024; 49:101186. [PMID: 38159402 DOI: 10.1016/j.cbd.2023.101186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
In the context of global warming and continuous high temperatures in the northern part of China in summer, the mortality rate of Strongylocentrotus intermedius through the summer reaches 70-80 %. The protein regulatory mechanism of S. intermedius in response to high temperature stress is still unclear. In order to investigate the protein expression of S. intermedius under high temperature stress, the study was conducted with the high-temperature resistant strain of S. intermedius and the control group of S. intermedius. Tandem Mass Tag (TMT) tagging technique was applied to resolve the protein expression profile of S. intermedius in response to high temperature stress. The results showed that, compared to 15 °C,136 DEPs were screened in high-temperature resistant strain groups of S. intermedius under high temperature stress and 87 DEPs were screened in the control group of S. intermedius. There were 33 common differential proteins in the two groups, such as APOLP, HSP 70, CDC37 and CALM. Further Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways analyses revealed that the up-regulated proteins CALM and HSP70 are significantly enriched in the "Phosphatidylinositol signaling system" and "Protein processing in endoplasmic reticulum" in heat-tolerant S. intermedius strains under high temperature stress. The control group of S. intermedius DEPs were significantly enriched in protein processing in the endoplasmic reticulum. These results provide a theoretical basis for the molecular mechanism of sea urchin heat tolerance and fundamental data for sea urchin selection and breeding for high temperature tolerance.
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Affiliation(s)
- Pengfei Hao
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China
| | - Lingshu Han
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China; School of Marine Sciences, Ningbo University, Ningbo, Zhejiang 315832, PR China
| | - Yanglei Wu
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China
| | - Yongjie Wang
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China
| | - Shuchao Ruan
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China
| | - Ziyu Liu
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China
| | - Weijie Zhang
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China
| | - Jun Ding
- Liaoning Provincial Key Laboratory of Northern Aquatic Germplasm Resources and Genetics and Breeding, Dalian Ocean University, Dalian, Liaoning 116023, PR China; Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Dalian Ocean University, Dalian, Liaoning 116023, PR China.
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Cruz-Wegener C, Kutell J, Aldaher L, deHaseth N, Bhattacharya SK, Ziebarth N. Quantifying ABCA1/apoA-1 Signaling Pathways with AFM Imaging and Lipidomic Analysis. Methods Mol Biol 2024; 2816:205-222. [PMID: 38977601 DOI: 10.1007/978-1-0716-3902-3_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/10/2024]
Abstract
The role of lipid metabolic pathways in the pathophysiology of primary open-angle glaucoma (POAG) has been thoroughly elucidated, with pathways involved in lipid-related disorders such as hypercholesterolemia and hyperlipoprotein accumulation being of particular interest. The ABCA1/apoA-1 transduction pathway moderates reverse cholesterol transport (RCT), facilitating the transport of free cholesterol (FC) and phospholipids (PL) and preventing intracellular lipid aggregates in retinal ganglion cells (RGCs) due to excess FCs and PLs. A deficiency of ABCA1 transporters, and thus, dysregulation of the ABCA1/apoA-1 transduction pathway, may potentiate cellular lipid accumulation, which affects the structural and mechanical features of the cholesterol-rich RGC membranes. Atomic force microscopy (AFM) is a cutting-edge imaging technique suitable for imaging topographical surfaces of a biological specimen and determining its mechanical properties and structural features. The versatility and precision of this technique may prove beneficial in understanding the effects of ABCA1/apoA-1 pathway downregulation and decreased cholesterol efflux in RGCs and their membranes. In this protocol, ABCA1-/- RGC mouse models are prepared over the course of 3 days and are then compared with non-knockout ABCA1 RGC mouse models through AFM imaging of topographical surfaces to examine the difference in membrane dynamics of knockout vs. non-knockout models. Intracellular and extracellular levels of lipids are quantified through high-performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS).
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Affiliation(s)
- Carolina Cruz-Wegener
- Bascom Palmer Eye Institute, Miami Integrative Metabolomics Research Center, University of Miami, Miami, FL, USA
| | - Jonah Kutell
- Bascom Palmer Eye Institute, Miami Integrative Metabolomics Research Center, University of Miami, Miami, FL, USA
| | - Louay Aldaher
- Bascom Palmer Eye Institute, Miami Integrative Metabolomics Research Center, University of Miami, Miami, FL, USA
| | - Noa deHaseth
- Bascom Palmer Eye Institute, Miami Integrative Metabolomics Research Center, University of Miami, Miami, FL, USA
- Department of Biomedical Engineering, University of Miami, Coral Gables, USA
| | - Sanjoy K Bhattacharya
- Bascom Palmer Eye Institute, Miller School of Medicine at University of Miami, Miami, FL, USA
- Miami Integrative Metabolomics Research Center, Miami, FL, USA
| | - Noel Ziebarth
- Bascom Palmer Eye Institute, Miami Integrative Metabolomics Research Center, University of Miami, Miami, FL, USA.
- Department of Biomedical Engineering, University of Miami, Coral Gables, USA.
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Zarezade V, Nazeri Z, Azizidoost S, Cheraghzadeh M, Babaahmadi-Rezaei H, Kheirollah A. Paradoxical effect of Aβ on protein levels of ABCA1 in astrocytes, microglia, and neurons isolated from C57BL/6 mice: an in vitro and in silico study to elucidate the effect of Aβ on ABCA1 in the brain cells. J Biomol Struct Dyn 2024; 42:274-287. [PMID: 37105231 DOI: 10.1080/07391102.2023.2201835] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 03/10/2023] [Indexed: 04/29/2023]
Abstract
Impaired cholesterol metabolism has been reported in Alzheimer's disease. Since ABCA1 is one of the main players in the brain's cholesterol homeostasis, here we used the in-vitro and in-silico experiments to investigate the effect of Aβ on ABCA1 protein levels in microglia, astrocytes, and neurons in mice. Microglia, astrocytes, and neurons were cultured and exposed to beta amyloid. ABCA1 in cell lysates was determined by Western blotting, and cholesterol efflux was measured in the conditioned media. Molecular docking, molecular dynamics simulations, and MM-GBSA analysis were conducted to gain a better understanding of the effects of Aβ on ABCA1. In response to Aβ, the protein levels of ABCA1 increase significantly in microglia, astrocytes, and neurons; however, its ability to enhance cholesterol efflux is diminished. Aβ inhibited the function of ABCA1 by obstructing the extracellular tunnel that transports lipids outside the cell, as determined by molecular docking. MD simulation analysis validated these findings. Our results demonstrated that Aβ could increase ABCA1 protein levels in various brain cells, regardless of cell type. Molecular docking, molecular dynamics simulation, and MM-GBSA studies indicate that Aβ has a significant effect on the structural conformation of ABCA1, possibly interfering with its function. We believe that the conformational changes of ABCA1 will inhibit its ability to subsequently release cellular cholesterol. Aβ may obstruct the extracellular tunnel of ABCA1, rendering it less accessible to proteases such as the calpain family, which may explain the increase in ABCA1 levels but decrease in its function.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vahid Zarezade
- Hyperlipidemia Research Center, Department of Clinical Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Zahra Nazeri
- Department of Biochemistry, Medical School, Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Shirin Azizidoost
- Atherosclerosis Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Cheraghzadeh
- Department of Biochemistry, Medical School, Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hossein Babaahmadi-Rezaei
- Hyperlipidemia Research Center, Department of Clinical Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Alireza Kheirollah
- Department of Biochemistry, Medical School, Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Zhang Q, Pan J, Zhu Y, Liu J, Pang Y, Li J, Han P, Gou M, Li J, Su P, Li Q, Chi Y. The metabolic adaptation of bile acids and cholesterol after biliary atresia in lamprey via transcriptome-based analysis. Heliyon 2023; 9:e19107. [PMID: 37636398 PMCID: PMC10450982 DOI: 10.1016/j.heliyon.2023.e19107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 08/02/2023] [Accepted: 08/10/2023] [Indexed: 08/29/2023] Open
Abstract
Lamprey underwent biliary atresia (BA) at its metamorphosis stage. In contrast to patients with BA who develop progressive disease, lamprey can grow and develop normally, suggesting that lamprey has several adaptations for BA. Here we show that adaptive changes in bile acid and cholesterol metabolism are produced after lamprey BA. Among 1102 differentially expressed genes (DGEs) after BA in lamprey, many are enriched in gene ontology (GO) terms and pathways related to steroid metabolism. We find that among the DGEs related to bile acids and cholesterol metabolism, the expression of cytochrome P450 family 7 subfamily A member 1 (CYP7A1), sodium-dependent taurine cotransport polypeptide (NTCP) are significantly downregulated, whereas nuclear receptor farnesoid X receptor (FXR), multidrug resistance-associated protein 3 (MRP3), 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), sterol O-acyltransferase 1 (SOAT1), and ATP binding cassette subfamily A member 1 (ABCA1) are remarkably upregulated. The changes in expression level are also validated by RT-qPCR. Furthermore, the level of high-density lipoprotein-cholesterol (HDL-C) and low-density lipoprotein-cholesterol (LDL-C) in juvenile serum is higher compared to larvae. Taken together, the findings collectively indicate that after BA, lamprey may maintain bile acids and cholesterol homeostasis in liver tissue by inhibiting bile acids synthesis and uptake, promoting its efflux back to circulation, and enhancing cholesterol esterification for storage as lipid droplets and its egress to form nascent HDL (nHDL). Understanding the possible molecular mechanisms of lamprey metabolic adaptation sheds new light on the understanding of the development and treatment of diseases caused by abnormal bile acid and cholesterol metabolism in humans.
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Affiliation(s)
- Qipeng Zhang
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Jilong Pan
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Yingying Zhu
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Jindi Liu
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Yue Pang
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Jiarui Li
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Pengju Han
- College of Life Sciences, Sichuan University, Sichuan, China
| | - Meng Gou
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Jun Li
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Peng Su
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Qingwei Li
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Yan Chi
- College of Life Sciences, Liaoning Normal University, Dalian, 116081, China
- Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
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Yang W, Wang S, Zhao Y, Jiang Q, Loor JJ, Tian Y, Fan W, Li M, Zhang B, Cao J, Xu C. Regulation of cholesterol metabolism during high fatty acid-induced lipid deposition in calf hepatocytes. J Dairy Sci 2023:S0022-0302(23)00370-3. [PMID: 37419743 DOI: 10.3168/jds.2022-23136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Accepted: 02/23/2023] [Indexed: 07/09/2023]
Abstract
Cholesterol in the circulation is partly driven by changes in feed intake, but aspects of cholesterol metabolism during development of fatty liver are not well known. The objective of this study was to investigate mechanisms of cholesterol metabolism in calf hepatocytes challenged with high concentrations of fatty acids (FA). To address mechanistic insights regarding cholesterol metabolism, liver samples were collected from healthy control dairy cows (n = 6; 7-13 d in milk) and cows with fatty liver (n = 6; 7-11 d in milk). In vitro, hepatocytes isolated from 3 healthy female calves (1 d old) were challenged with or without a mix of 1.2 mM FA to induce metabolic stress. In addition, hepatocytes were processed with 10 µmol/L of the cholesterol synthesis inhibitor simvastatin or 6 µmol/L of the cholesterol intracellular transport inhibitor U18666A with or without the 1.2 mM FA mix. To evaluate the role of cholesterol addition, hepatocytes were treated with 0.147 mg/mL methyl-β-cyclodextrin (MβCD + FA) or 0.147 mg/mL MβCD with or without 10 and 100 µmol/L cholesterol before incubation with FA (CHO10 + FA and CHO100 + FA). In vivo data from liver biopsies were analyzed by 2-tailed unpaired Student's t-test. Data from in vitro calf hepatocytes were analyzed by one-way ANOVA. Compared with healthy cows, blood plasma total cholesterol and plasma low-density lipoprotein cholesterol content in cows with fatty liver was markedly lower, whereas the hepatic total cholesterol content did not differ. In contrast, compared with healthy controls, the triacylglycerol content in the liver and the content of FA, β-hydroxybutyrate, and aspartate aminotransferase in the plasma of cows with fatty liver were greater. The results revealed that both fatty liver in vivo and challenge of calf hepatocytes with 1.2 mM FA in vitro led to greater mRNA and protein abundance of sterol regulatory element binding transcription factor 1 (SREBF1) and fatty acid synthase (FASN). In contrast, mRNA and protein abundance of sterol regulatory element binding transcription factor 2 (SREBF2), acyl coenzyme A-cholesterol acyltransferase, and ATP-binding cassette subfamily A member 1 (ABCA1) were lower. Compared with the FA group, the cholesterol synthesis inhibitor simvastatin led to greater protein abundance of microsomal triglyceride transfer protein and mRNA abundance of SREBF2, 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR), ACAT2, and lower ABCA1 and FASN protein abundance. In contrast, compared with the FA group, the cholesterol intracellular transport inhibitor U18666A + FA led to greater total cholesterol concentration and greater protein and mRNA abundance of FASN. Compared with the MβCD + FA group, the addition of 10 µmol/L cholesterol led to greater concentration of cholesteryl ester and excretion of apolipoprotein B100, and greater protein and mRNA abundance of ABCA1 and microsomal triglyceride transfer protein, and lower concentration of malondialdehyde. Overall, a reduction in cholesterol synthesis promoted FA metabolism in hepatocytes likely to relieve the oxidative stress caused by the high FA load. The data suggest that maintenance of normal cholesterol synthesis promotes very low-density lipoprotein excretion and can reduce lipid accumulation and oxidative stress in dairy cows that experience fatty liver.
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Affiliation(s)
- Wei Yang
- College of Veterinary Medicine, China Agricultural University, Haidian District, Beijing 100193, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Shuang Wang
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Yingying Zhao
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Qianming Jiang
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL 61801
| | - Juan J Loor
- Mammalian NutriPhysioGenomics, Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Urbana, IL 61801
| | - Yan Tian
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Wenwen Fan
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Ming Li
- Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Bingbing Zhang
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China
| | - Jie Cao
- College of Veterinary Medicine, China Agricultural University, Haidian District, Beijing 100193, China.
| | - Chuang Xu
- College of Veterinary Medicine, China Agricultural University, Haidian District, Beijing 100193, China; Heilongjiang Provincial Key Laboratory of Prevention and Control of Bovine Diseases, College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
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Zhang H, Wang J, Sun J, Wang Q, Guo L, Ju X. Regulatory mechanism underlying liver X receptor effects on the tumor microenvironment, inflammation and tumorigenesis. Expert Opin Ther Targets 2023; 27:989-998. [PMID: 37753584 DOI: 10.1080/14728222.2023.2264513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 09/25/2023] [Indexed: 09/28/2023]
Abstract
INTRODUCTION Liver X receptors (LXRs) have emerged as novel targets for tumor treatment. LXRs within the tumor microenvironment show the capacity to impact tumorigenesis and tumor development by regulating the infiltration of immune cells and release of cytokines to moderate inflammation. AREAS COVERED In this review, we present a systematic description of recent progress in understanding the impact of LXRs on the tumor microenvironment and tumorigenesis. We also summarize the antitumor effects mediated by LXRs via their regulation of cytokine expression. Additionally, we discuss the limitations of LXR research in tumor studies to date. EXPERT OPINION Previous studies have demonstrated abnormal LXR expression in tumor tissues, and activation of LXRs has been shown to inhibit tumorigenesis and promote apoptosis in tumor cells. However, LXRs can also affect tumorigenesis by regulating immune cell functions within the tumor immune microenvironment. By summarizing the impact of LXRs on immune cells, we provide new insights into the multifaceted nature of LXRs as antitumor targets.
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Affiliation(s)
- Heng Zhang
- Department of General Surgery, Nanjing Lishui District People's Hospital, Zhongda Hospital Lishui Branch, Southeast University, Nanjing, China
| | - Jing Wang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Jiang Sun
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Qiang Wang
- School of Life Sciences, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Lanfang Guo
- Department of Clinical Laboratory Medicine, The Fourth People's Hospital of Jiangsu University, Zhenjiang, Jiangsu, China
| | - Xiaoli Ju
- School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
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13
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Choi HY, Choi S, Iatan I, Ruel I, Genest J. Biomedical Advances in ABCA1 Transporter: From Bench to Bedside. Biomedicines 2023; 11:biomedicines11020561. [PMID: 36831097 PMCID: PMC9953649 DOI: 10.3390/biomedicines11020561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
ATP-binding cassette transporter A1 (ABCA1) has been identified as the molecular defect in Tangier disease. It is biochemically characterized by absence of high-density lipoprotein cholesterol (HDL-C) in the circulation, resulting in the accumulation of cholesterol in lymphoid tissues. Accumulation of cholesterol in arteries is an underlying cause of atherosclerosis, and HDL-C levels are inversely associated with the presence of atherosclerotic cardiovascular disease (ASCVD). ABCA1 increases HDL-C levels by driving the generation of new HDL particles in cells, and cellular cholesterol is removed in the process of HDL generation. Therefore, pharmacological strategies that promote the HDL biogenic process by increasing ABCA1 expression and activity have been intensively studied to reduce ASCVD. Many ABCA1-upregulating agents have been developed, and some have shown promising effects in pre-clinical studies, but no clinical trials have met success yet. ABCA1 has long been an attractive drug target, but the failed clinical trials have indicated the difficulty of therapeutic upregulation of ABCA1, as well as driving us to: improve our understanding of the ABCA1 regulatory system; to develop more specific and sophisticated strategies to upregulate ABCA1 expression; and to search for novel druggable targets in the ABCA1-dependent HDL biogenic process. In this review, we discuss the beginning, recent advances, challenges and future directions in ABCA1 research aimed at developing ABCA1-directed therapies for ASCVD.
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Affiliation(s)
- Hong Y. Choi
- Research Institute of the McGill University Health Centre, Montréal, QC H4A 3J1, Canada
- Correspondence: ; Tel.: +1-514-934-1934 (ext. 35796)
| | - Senna Choi
- Research Institute of the McGill University Health Centre, Montréal, QC H4A 3J1, Canada
| | - Iulia Iatan
- Centre for Heart Lung Innovation, Department of Medicine, St. Paul’s Hospital, University of British Columbia, Vancouver, BC V6Z 1Y6, Canada
| | - Isabelle Ruel
- Research Institute of the McGill University Health Centre, Montréal, QC H4A 3J1, Canada
| | - Jacques Genest
- Research Institute of the McGill University Health Centre, Montréal, QC H4A 3J1, Canada
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Microglia and Cholesterol Handling: Implications for Alzheimer's Disease. Biomedicines 2022; 10:biomedicines10123105. [PMID: 36551857 PMCID: PMC9775660 DOI: 10.3390/biomedicines10123105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/24/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022] Open
Abstract
Cholesterol is essential for brain function and structure, however altered cholesterol metabolism and transport are hallmarks of multiple neurodegenerative conditions, including Alzheimer's disease (AD). The well-established link between apolipoprotein E (APOE) genotype and increased AD risk highlights the importance of cholesterol and lipid transport in AD etiology. Whereas more is known about the regulation and dysregulation of cholesterol metabolism and transport in neurons and astrocytes, less is known about how microglia, the immune cells of the brain, handle cholesterol, and the subsequent implications for the ability of microglia to perform their essential functions. Evidence is emerging that a high-cholesterol environment, particularly in the context of defects in the ability to transport cholesterol (e.g., expression of the high-risk APOE4 isoform), can lead to chronic activation, increased inflammatory signaling, and reduced phagocytic capacity, which have been associated with AD pathology. In this narrative review we describe how cholesterol regulates microglia phenotype and function, and discuss what is known about the effects of statins on microglia, as well as highlighting areas of future research to advance knowledge that can lead to the development of novel therapies for the prevention and treatment of AD.
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Starzak M, Stanek A, Jakubiak GK, Cholewka A, Cieślar G. Arterial Stiffness Assessment by Pulse Wave Velocity in Patients with Metabolic Syndrome and Its Components: Is It a Useful Tool in Clinical Practice? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191610368. [PMID: 36012003 PMCID: PMC9407885 DOI: 10.3390/ijerph191610368] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 08/17/2022] [Accepted: 08/18/2022] [Indexed: 05/07/2023]
Abstract
Metabolic syndrome (MS) is not a single disease but a cluster of metabolic disorders associated with increased risk for development of diabetes mellitus and its complications. Currently, the definition of MS published in 2009 is widely used, but there are more versions of the diagnostic criteria, making it difficult to conduct scientific discourse in this area. Increased arterial stiffness (AS) can predict the development of cardiovascular disease both in the general population and in patients with MS. Pulse wave velocity (PWV), as a standard method to assess AS, may point out subclinical organ damage in patients with hypertension. The decrease in PWV level during antihypertensive therapy can identify a group of patients with better outcomes independently of their reduction in blood pressure. The adverse effect of metabolic disturbances on arterial function can be offset by an adequate program of exercises, which includes mainly aerobic physical training. Non-insulin-based insulin resistance index can predict AS due to a strong positive correlation with PWV. The purpose of this paper is to present the results of the review of the literature concerning the relationship between MS and its components, and AS assessed by PWV, including clinical usefulness of PWV measurement in patients with MS and its components.
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Affiliation(s)
- Monika Starzak
- Department and Clinic of Internal Medicine, Angiology, and Physical Medicine, Specialistic Hospital No. 2 in Bytom, Batorego 15 St., 41-902 Bytom, Poland
| | - Agata Stanek
- Department and Clinic of Internal Medicine, Angiology, and Physical Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Batorego 15 St., 41-902 Bytom, Poland
- Correspondence: or
| | - Grzegorz K. Jakubiak
- Department and Clinic of Internal Medicine, Angiology, and Physical Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Batorego 15 St., 41-902 Bytom, Poland
| | - Armand Cholewka
- Faculty of Science and Technology, University of Silesia, Bankowa 12 St., 40-007 Katowice, Poland
| | - Grzegorz Cieślar
- Department and Clinic of Internal Medicine, Angiology, and Physical Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Batorego 15 St., 41-902 Bytom, Poland
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Lewandowski CT, Laham MS, Thatcher GR. Remembering your A, B, C's: Alzheimer's disease and ABCA1. Acta Pharm Sin B 2022; 12:995-1018. [PMID: 35530134 PMCID: PMC9072248 DOI: 10.1016/j.apsb.2022.01.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/27/2021] [Accepted: 01/07/2022] [Indexed: 12/24/2022] Open
Abstract
The function of ATP binding cassette protein A1 (ABCA1) is central to cholesterol mobilization. Reduced ABCA1 expression or activity is implicated in Alzheimer's disease (AD) and other disorders. Therapeutic approaches to boost ABCA1 activity have yet to be translated successfully to the clinic. The risk factors for AD development and progression, including comorbid disorders such as type 2 diabetes and cardiovascular disease, highlight the intersection of cholesterol transport and inflammation. Upregulation of ABCA1 can positively impact APOE lipidation, insulin sensitivity, peripheral vascular and blood–brain barrier integrity, and anti-inflammatory signaling. Various strategies towards ABCA1-boosting compounds have been described, with a bias toward nuclear hormone receptor (NHR) agonists. These agonists display beneficial preclinical effects; however, important side effects have limited development. In particular, ligands that bind liver X receptor (LXR), the primary NHR that controls ABCA1 expression, have shown positive effects in AD mouse models; however, lipogenesis and unwanted increases in triglyceride production are often observed. The longstanding approach, focusing on LXRβ vs. LXRα selectivity, is over-simplistic and has failed. Novel approaches such as phenotypic screening may lead to small molecule NHR modulators that elevate ABCA1 function without inducing lipogenesis and are clinically translatable.
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Vallée A. Association Between Lipids and Arterial Stiffness for Primary Cardiovascular Prevention in a General Middle-Aged European Population. Front Cardiovasc Med 2022; 9:899841. [PMID: 35711343 PMCID: PMC9197205 DOI: 10.3389/fcvm.2022.899841] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 05/03/2022] [Indexed: 11/13/2022] Open
Abstract
Background Dyslipidemia contributes to the progression of arterial stiffness (AS). The purpose of this study was to investigate the association of the different lipid parameters with arterial stiffness index (ASI) in a middle-aged population free of cardiovascular (CV) disease. Methods Among 71,326 volunteers from the UK Biobank population, total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), lipoprotein (a) [Lp(a)], apolipoproteins A and B (Apo A and Apo B), and ASI were measured. Values for non-HDL, TC/HDL, TG/HDL, and LDL/HDL were calculated. AS was defined as an ASI > 10 m/s. Associations between lipid parameters and ASI were performed using multiple linear logistic regressions. The results reported from univariate models were the squared partial correlation coefficient, r 2, and from multivariate models, the adjusted coefficient of determination, R 2, to describe the contribution of ASI variability for each lipid parameter. Results We found that TG/HDL was mainly associated with ASI [β = 0.53 (0.01), r 2 = 3.66%, p < 0.001 and adjusted β = 0.21 (0.01), R 2 = 13.58%, p < 0.001] and AS [odds ratio (OR) = 1.86 (1.80-1.92), r 2 = 1.65%, p < 0.001 and adjusted OR = 1.15 (1.13-1.17), R 2 = 8.54%, p < 0.001] rather than the others. TG/HDL remained the only lipid parameter that showed added value in linear multivariate models. TG/HDL remained less associated with AS than age (r 2 = 5.55%, p < 0.001), mean blood pressure (BP; r 2 = 5.31%, p < 0.001), and gender (r 2 = 4.44%, p < 0.001), but more highly associated than body mass index (BMI; r 2 = 1.95%, p < 0.001), heart rate (HR; r 2 = 0.81%, p < 0.001), fasting glucose (r 2 = 0.18%, p < 0.001), tobacco (r 2 = 0.05%, p < 0.001), and glomerular filtration rate (GFR; r 2 = 0.01%, p < 0.001). Conclusions In primary CV prevention, lipids, especially through the TG/HDL ratio, could be more instructive in preventing the increase in AS than other modifiable factors.
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Affiliation(s)
- Alexandre Vallée
- Department of Epidemiology-Data-Biostatistics, Delegation of Clinical Research and Innovation (DRCI), Foch Hospital, Suresnes, France
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Shim SY, Yoon HY, Yee J, Han JM, Gwak HS. Association between ABCA1 Gene Polymorphisms and Plasma Lipid Concentration: A Systematic Review and Meta-Analysis. J Pers Med 2021; 11:jpm11090883. [PMID: 34575660 PMCID: PMC8466567 DOI: 10.3390/jpm11090883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 08/25/2021] [Accepted: 08/26/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Although ABCA1 gene polymorphisms may be associated with the plasma lipid concentration, the literature has not shown a consistent pattern. In this study, we attempted to elucidate the association between the ABCA1 69C>T, 825V>I, and 230R>C polymorphisms and the plasma lipid concentration through a systematic review and meta-analysis. METHODS We selected studies published up to October 2020 in the PubMed, Web of Science, and Embase databases according to inclusion and exclusion criteria. The mean difference (MD) and 95% confidence interval (CI) were used to assess the relationship between the presence of ABCA1 69C>T, 825V>I, and 230R>C and plasma lipid levels. Meta-analysis was performed using Review Manager (version 5.3). Both Begg's test and Egger's regression test of the funnel plot were performed using R Studio software (version 3.6.0) to identify publication bias. RESULTS We analyzed the data on the ABCA1 69C>T polymorphism involving 14,843 subjects in 11 studies, 825V>I polymorphism involving 2580 subjects in 5 studies, and 230R>C polymorphism involving 4834 subjects in 4 studies. The T allele carriers in 69C>T, II carriers in 825V>I, and C carriers in 230R>C had lower high-density lipoprotein cholesterol levels; the MD (95% CI) was -0.05 mmol/L (95% CI: -0.09 to -0.01, p = 0.02), -0.05 mmol/L (95% CI: -0.09 to -0.00, p = 0.03), and -0.1 mmol/mL (95% CI: -0.12 to -0.07 mmol/L, p < 0.00001), respectively. In the case of 230R>C, the serum total cholesterol concentration of C carriers was significantly lower than that of RR carriers (-0.2 mmol/L, 95% CI: -0.3 to -0.11, p < 0.0001). CONCLUSION This meta-analysis demonstrates that the ABCA1 69C>T, 825V>I, and 230R>C polymorphisms could affect the plasma lipid concentration. As the plasma lipid concentration may be related to various diseases, ABCA1 genotyping could be useful for the management of lipid levels.
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Affiliation(s)
- Sun-Young Shim
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea; (S.-Y.S.); (H.-Y.Y.); (J.Y.)
- Graduate School of Clinical Biohealth, Ewha Womans University, Seoul 03760, Korea
| | - Ha-Young Yoon
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea; (S.-Y.S.); (H.-Y.Y.); (J.Y.)
| | - Jeong Yee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea; (S.-Y.S.); (H.-Y.Y.); (J.Y.)
| | - Ji-Min Han
- College of Pharmacy, Chungbuk National University, Cheongju-si 28160, Chungcheongbuk-do, Korea
- Correspondence: (J.-M.H.); (H.-S.G.); Tel.: +82-43-249-1387 (J.-M.H.); +82-2-3277-4376 (H.-S.G.); Fax: +82-43-268-2732 (J.-M.H.); +82-2-3277-3051 (H.-S.G.)
| | - Hye-Sun Gwak
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul 03760, Korea; (S.-Y.S.); (H.-Y.Y.); (J.Y.)
- Graduate School of Clinical Biohealth, Ewha Womans University, Seoul 03760, Korea
- Correspondence: (J.-M.H.); (H.-S.G.); Tel.: +82-43-249-1387 (J.-M.H.); +82-2-3277-4376 (H.-S.G.); Fax: +82-43-268-2732 (J.-M.H.); +82-2-3277-3051 (H.-S.G.)
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19
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Coremans C, Delporte C, Cotton F, Van De Borne P, Boudjeltia KZ, Van Antwerpen P. Mass Spectrometry for the Monitoring of Lipoprotein Oxidations by Myeloperoxidase in Cardiovascular Diseases. Molecules 2021; 26:molecules26175264. [PMID: 34500696 PMCID: PMC8434463 DOI: 10.3390/molecules26175264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 01/14/2023] Open
Abstract
Oxidative modifications of HDLs and LDLs by myeloperoxidase (MPO) are regularly mentioned in the context of atherosclerosis. The enzyme adsorbs on protein moieties and locally produces oxidizing agents to modify specific residues on apolipoproteins A-1 and B-100. Oxidation of lipoproteins by MPO (Mox) leads to dysfunctional Mox-HDLs associated with cholesterol-efflux deficiency, and Mox-LDLs that are no more recognized by the LDL receptor and become proinflammatory. Several modification sites on apoA-1 and B-100 that are specific to MPO activity are described in the literature, which seem relevant in patients with cardiovascular risk. The most appropriate analytical method to assess these modifications is based on liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). It enables the oxidized forms of apoA-1and apoB-100 to be quantified in serum, in parallel to a quantification of these apolipoproteins. Current standard methods to quantify apolipoproteins are based on immunoassays that are well standardized with good analytical performances despite the cost and the heterogeneity of the commercialized kits. Mass spectrometry can provide simultaneous measurements of quantity and quality of apolipoproteins, while being antibody-independent and directly detecting peptides carrying modifications for Mox-HDLs and Mox-LDLs. Therefore, mass spectrometry is a potential and reliable alternative for apolipoprotein quantitation.
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Affiliation(s)
- Catherine Coremans
- RD3-Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles, 1050 Brussels, Belgium; (C.D.); (P.V.A.)
- Correspondence: ; Tel.: +32-2-650-5331
| | - Cédric Delporte
- RD3-Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles, 1050 Brussels, Belgium; (C.D.); (P.V.A.)
| | - Frédéric Cotton
- Laboratoire Hospitalier Universitaire de Bruxelles (LHUB-ULB), Department of Clinical Chemistry, Université Libre de Bruxelles (ULB), 1000 Brussels, Belgium;
| | - Phillipe Van De Borne
- Department of Cardiology Erasme Hospital, Université Libre de Bruxelles, 1070 Brussels, Belgium;
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine (ULB 222 Unit), CHU-Charleroi, ISPPC Hôpital Vésale, Université Libre de Bruxelles, 6110 Montigny-Le-Tilleul, Belgium;
| | - Pierre Van Antwerpen
- RD3-Pharmacognosy, Bioanalysis and Drug Discovery, Faculty of Pharmacy, Université Libre de Bruxelles, 1050 Brussels, Belgium; (C.D.); (P.V.A.)
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Kothari V, Tang J, He Y, Kramer F, Kanter JE, Bornfeldt KE. ADAM17 Boosts Cholesterol Efflux and Downstream Effects of High-Density Lipoprotein on Inflammatory Pathways in Macrophages. Arterioscler Thromb Vasc Biol 2021; 41:1854-1873. [PMID: 33882688 PMCID: PMC8159900 DOI: 10.1161/atvbaha.121.315145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Vishal Kothari
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute
| | - Jingjing Tang
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute
| | - Yi He
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute
| | - Farah Kramer
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute
| | - Jenny E. Kanter
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute
| | - Karin E. Bornfeldt
- Department of Medicine, Division of Metabolism, Endocrinology and Nutrition, UW Medicine Diabetes Institute
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA 98109
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21
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Kılıç A, Baydar O, Elçik D, Apaydın Z, Can MM. Role of dyslipidemia in early vascular aging syndrome. Turk J Med Sci 2021; 51:727-734. [PMID: 33356026 PMCID: PMC8203140 DOI: 10.3906/sag-2008-165] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/26/2020] [Indexed: 12/18/2022] Open
Abstract
Background/aim Arterial stiffness, known as a predictor of early vascular aging, was defined as the main determinant of cardiovascular mortality and morbidity. However, the relationship between lipid profile and increased arterial stiffness is not clear. The aim of this study is to investigate the relationship between lipid profiles and increased arterial stiffness in patients with early vascular aging syndrome. Materials and methods A total of 1582 participants —504 (31.8%) of were male and the mean age was 52.8 ±14.2 years— were included in the study . Patients who applied to the hospital for various reasons and who had undergone 24-h blood pressure Holter monitoring were included in this study. Patients were divided into four groups according to pulse wave velocity (PWV) quartiles (Q1 (<6.3), Q2 (6.3–7.4), Q3 (7.5–8.8), Q4 (>8.8)). Results We found that in the highest PWV group, patients had higher systolic blood pressure (SBP), diastolic blood pressure (DBP), glucose, blood urea nitrogen (BUN), creatinine, urinary albumin excretion (UAE), uric acid(UA), total cholesterol (TC), low-density lipoprotein ( LDL-C), triglycerid (TG), and non- high-density lipoprotein (HDL-C ) levels. Additionally, diabetes mellitus (dm), age, non-HDL-C, and TG/ HDL-C levels were detected as independent risk factors of increased PWV in ordinal logistic regression analysis. Conclusion Our study demonstrates that lipid parameters are strongly correlated with increased PWVvalue and early vascular aging. In daily clinical practice, TG\HDL-C ratio, known as atherogenic index, might be used routinely for predicted of early vascular aging and subclinical atherosclerosis.
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Affiliation(s)
- Alparslan Kılıç
- Department of Cardiology, Koç University Hospital, İstanbul, Turkey
| | - Onur Baydar
- Department of Cardiology, Koç University Hospital, İstanbul, Turkey
| | - Deniz Elçik
- Department of Cardiology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Ziya Apaydın
- Department of Cardiology, Haseki Training and Research Hospital, İstanbul, Turkey
| | - Mehmet Mustafa Can
- Department of Cardiology, Haseki Training and Research Hospital, İstanbul, Turkey
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Tsui PF, Chern CY, Lien CF, Lin FY, Tsai CS, Tsai MC, Lin CS. An octimibate derivative, Oxa17, enhances cholesterol efflux and exerts anti-inflammatory and atheroprotective effects in experimental atherosclerosis. Biochem Pharmacol 2021; 188:114581. [PMID: 33895158 DOI: 10.1016/j.bcp.2021.114581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 12/22/2022]
Abstract
Atherosclerotic cardiovascular diseases (ASCVDs), associated with vascular inflammation and lipid dysregulation, are responsible for high morbidity and mortality rates globally. For ASCVD treatment, cholesterol efflux plays an atheroprotective role in ameliorating inflammation and lipid dysregulation. To develop a multidisciplinary agent for promoting cholesterol efflux, octimibate derivatives were screened and investigated for the expression of ATP-binding cassette transporter A1 (ABCA1). Western blotting and qPCR analysis were conducted to determine the molecular mechanism associated with ABCA1 expression in THP-1 macrophages; results revealed that Oxa17, an octimibate derivative, enhanced ABCA1 expression through liver X receptors alpha (LXRα) activation but not through the microRNA pathway. We also investigated the role of Oxa17 in high-fat diet (HFD)-fed mice used as an in vivo atherosclerosis-prone model. In ldlr-/- mice, Oxa17 increased plasma high-density lipoprotein (HDL) and reduced plaque formation in the aorta. Plaque stability improved via reduction of macrophage accumulation and via narrowing of the necrotic core size under Oxa17 treatment. Our study demonstrates that Oxa17 is a novel and potential agent for ASCVD treatment with atheroprotective and anti-inflammatory properties.
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Affiliation(s)
- Pi-Fen Tsui
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Division of Cardiology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
| | - Ching-Yuh Chern
- Department of Applied Chemistry, National Chiayi University, Chiayi City 60004, Taiwan
| | - Chih-Feng Lien
- Division of Cardiology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
| | - Feng-Yen Lin
- Taipei Heart Research Institute and Departments of Internal Medicine, Taipei Medical University, Taipei 11031, Taiwan; Division of Cardiology and Cardiovascular Research Center, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan
| | - Chien-Sung Tsai
- Division of Cardiovascular Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan; Department and Graduate Institute of Pharmacology, National Defense Medical Center, Taipei 11490, Taiwan; Institute of Pharmacy, I.M. Sechenov First Moscow State Medical University, Moscow 119991, Russia
| | - Min-Chien Tsai
- Department of Physiology and Biophysics, Graduate Institute of Physiology, National Defense Medical Center, Taipei 11490, Taiwan
| | - Chin-Sheng Lin
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan; Division of Cardiology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan.
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Effects of Four Weeks of High-Intensity Intermittent Training and Continuous Walking on Atherogenic Indices of Obese Middle-Aged Men. MEDICAL LABORATORY JOURNAL 2021. [DOI: 10.52547/mlj.15.2.42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Efficacy of Polyphenols in the Management of Dyslipidemia: A Focus on Clinical Studies. Nutrients 2021; 13:nu13020672. [PMID: 33669729 PMCID: PMC7922034 DOI: 10.3390/nu13020672] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/15/2021] [Accepted: 02/16/2021] [Indexed: 02/06/2023] Open
Abstract
Polyphenols (PLPs), phytochemicals found in a wide range of plant-based foods, have gained extensive attention in view of their antioxidant, anti-inflammatory, immunomodulatory and several additional beneficial activities. The health-promoting effects noted in animal models of various non-communicable diseases explain the growing interest in these molecules. In particular, in vitro and animal studies reported an attenuation of lipid disorders in response to PLPs. However, despite promising preclinical investigations, the effectiveness of PLPs in human dyslipidemia (DLP) is less clear and necessitates revision of available literature. Therefore, the present review analyzes the role of PLPs in managing clinical DLP, notably by dissecting their potential in ameliorating lipid/lipoprotein metabolism and alleviating hyperlipidemia, both postprandially and in long-term interventions. To this end, PubMed was used for article search. The search terms included polyphenols, lipids, triglycerides, cholesterol, LDL-cholesterol and /or HDL-cholesterol. The critical examination of the trials published to date illustrates certain benefits on blood lipids along with co-morbidities in participant’s health status. However, inconsistent results document significant research gaps, potentially owing to study heterogeneity and lack of rigor in establishing PLP bioavailability during supplementation. This underlines the need for further efforts in order to elucidate and support a potential role of PLPs in fighting DLP.
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25
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Computational SNP Analysis and Molecular Simulation Revealed the Most Deleterious Missense Variants in the NBD1 Domain of Human ABCA1 Transporter. Int J Mol Sci 2020; 21:ijms21207606. [PMID: 33066695 PMCID: PMC7589834 DOI: 10.3390/ijms21207606] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/12/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022] Open
Abstract
The ATP-binding cassette transporter A1 (ABCA1) is a membrane-bound exporter protein involved in regulating serum HDL level by exporting cholesterol and phospholipids to load up in lipid-poor ApoA-I and ApoE, which allows the formation of nascent HDL. Mutations in the ABCA1 gene, when presents in both alleles, disrupt the canonical function of ABCA1, which associates with many disorders related to lipid transport. Although many studies have reported the phenotypic effects of a large number of ABCA1 variants, the pathological effect of non-synonymous polymorphisms (nsSNPs) in ABCA1 remains elusive. Therefore, aiming at exploring the structural and functional consequences of nsSNPs in ABCA1, in this study, we employed an integrated computational approach consisting of nine well-known in silico tools to identify damaging SNPs and molecular dynamics (MD) simulation to get insights into the magnitudes of the damaging effects. In silico tools revealed four nsSNPs as being most deleterious, where the two SNPs (G1050V and S1067C) are identified as the highly conserved and functional disrupting mutations located in the NBD1 domain. MD simulation suggested that both SNPs, G1050V and S1067C, changed the overall structural flexibility and dynamics of NBD1, and induced substantial alteration in the structural organization of ATP binding site. Taken together, these findings direct future studies to get more insights into the role of these variants in the loss of the ABCA1 function.
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26
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Ding L, Zhang L, Shi H, Xue C, Yanagita T, Zhang T, Wang Y. The Protective Effect of Dietary EPA‐Enriched Ethanolamine Plasmalogens against Hyperlipidemia in Aged Mice. EUR J LIPID SCI TECH 2020. [DOI: 10.1002/ejlt.202000179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lin Ding
- College of Food Science and Engineering Ocean University of China No.5 Yushan Road Qingdao 266003 P. R. China
| | - Lingyu Zhang
- College of Food Science and Engineering Ocean University of China No.5 Yushan Road Qingdao 266003 P. R. China
| | - Haohao Shi
- College of Food Science and Engineering Ocean University of China No.5 Yushan Road Qingdao 266003 P. R. China
| | - Changhu Xue
- College of Food Science and Engineering Ocean University of China No.5 Yushan Road Qingdao 266003 P. R. China
- Laboratory for Marine Drugs and Bioproducts Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao 266237 P. R. China
| | - Teruyoshi Yanagita
- Laboratory of Nutrition Biochemistry Department of Applied Biochemistry and Food Science Saga University Saga 840‐8502 Japan
| | - Tiantian Zhang
- College of Food Science and Engineering Ocean University of China No.5 Yushan Road Qingdao 266003 P. R. China
| | - Yuming Wang
- College of Food Science and Engineering Ocean University of China No.5 Yushan Road Qingdao 266003 P. R. China
- Laboratory for Marine Drugs and Bioproducts Pilot National Laboratory for Marine Science and Technology (Qingdao) Qingdao 266237 P. R. China
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27
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Frambach SJCM, de Haas R, Smeitink JAM, Rongen GA, Russel FGM, Schirris TJJ. Brothers in Arms: ABCA1- and ABCG1-Mediated Cholesterol Efflux as Promising Targets in Cardiovascular Disease Treatment. Pharmacol Rev 2020; 72:152-190. [PMID: 31831519 DOI: 10.1124/pr.119.017897] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Atherosclerosis is a leading cause of cardiovascular disease worldwide, and hypercholesterolemia is a major risk factor. Preventive treatments mainly focus on the effective reduction of low-density lipoprotein cholesterol, but their therapeutic value is limited by the inability to completely normalize atherosclerotic risk, probably due to the disease complexity and multifactorial pathogenesis. Consequently, high-density lipoprotein cholesterol gained much interest, as it appeared to be cardioprotective due to its major role in reverse cholesterol transport (RCT). RCT facilitates removal of cholesterol from peripheral tissues, including atherosclerotic plaques, and its subsequent hepatic clearance into bile. Therefore, RCT is expected to limit plaque formation and progression. Cellular cholesterol efflux is initiated and propagated by the ATP-binding cassette (ABC) transporters ABCA1 and ABCG1. Their expression and function are expected to be rate-limiting for cholesterol efflux, which makes them interesting targets to stimulate RCT and lower atherosclerotic risk. This systematic review discusses the molecular mechanisms relevant for RCT and ABCA1 and ABCG1 function, followed by a critical overview of potential pharmacological strategies with small molecules to enhance cellular cholesterol efflux and RCT. These strategies include regulation of ABCA1 and ABCG1 expression, degradation, and mRNA stability. Various small molecules have been demonstrated to increase RCT, but the underlying mechanisms are often not completely understood and are rather unspecific, potentially causing adverse effects. Better understanding of these mechanisms could enable the development of safer drugs to increase RCT and provide more insight into its relation with atherosclerotic risk. SIGNIFICANCE STATEMENT: Hypercholesterolemia is an important risk factor of atherosclerosis, which is a leading pathological mechanism underlying cardiovascular disease. Cholesterol is removed from atherosclerotic plaques and subsequently cleared by the liver into bile. This transport is mediated by high-density lipoprotein particles, to which cholesterol is transferred via ATP-binding cassette transporters ABCA1 and ABCG1. Small-molecule pharmacological strategies stimulating these transporters may provide promising options for cardiovascular disease treatment.
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Affiliation(s)
- Sanne J C M Frambach
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences (S.J.C.M.F., G.A.R., F.G.M.R., T.J.J.S.), Radboud Center for Mitochondrial Medicine (S.J.C.M.F., R.d.H., J.A.M.S., F.G.M.R., T.J.J.S.), Department of Pediatrics (R.d.H., J.A.M.S.), and Department of Internal Medicine, Radboud Institute for Health Sciences (G.A.R.), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ria de Haas
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences (S.J.C.M.F., G.A.R., F.G.M.R., T.J.J.S.), Radboud Center for Mitochondrial Medicine (S.J.C.M.F., R.d.H., J.A.M.S., F.G.M.R., T.J.J.S.), Department of Pediatrics (R.d.H., J.A.M.S.), and Department of Internal Medicine, Radboud Institute for Health Sciences (G.A.R.), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan A M Smeitink
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences (S.J.C.M.F., G.A.R., F.G.M.R., T.J.J.S.), Radboud Center for Mitochondrial Medicine (S.J.C.M.F., R.d.H., J.A.M.S., F.G.M.R., T.J.J.S.), Department of Pediatrics (R.d.H., J.A.M.S.), and Department of Internal Medicine, Radboud Institute for Health Sciences (G.A.R.), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Gerard A Rongen
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences (S.J.C.M.F., G.A.R., F.G.M.R., T.J.J.S.), Radboud Center for Mitochondrial Medicine (S.J.C.M.F., R.d.H., J.A.M.S., F.G.M.R., T.J.J.S.), Department of Pediatrics (R.d.H., J.A.M.S.), and Department of Internal Medicine, Radboud Institute for Health Sciences (G.A.R.), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frans G M Russel
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences (S.J.C.M.F., G.A.R., F.G.M.R., T.J.J.S.), Radboud Center for Mitochondrial Medicine (S.J.C.M.F., R.d.H., J.A.M.S., F.G.M.R., T.J.J.S.), Department of Pediatrics (R.d.H., J.A.M.S.), and Department of Internal Medicine, Radboud Institute for Health Sciences (G.A.R.), Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tom J J Schirris
- Department of Pharmacology and Toxicology, Radboud Institute for Molecular Life Sciences (S.J.C.M.F., G.A.R., F.G.M.R., T.J.J.S.), Radboud Center for Mitochondrial Medicine (S.J.C.M.F., R.d.H., J.A.M.S., F.G.M.R., T.J.J.S.), Department of Pediatrics (R.d.H., J.A.M.S.), and Department of Internal Medicine, Radboud Institute for Health Sciences (G.A.R.), Radboud University Medical Center, Nijmegen, The Netherlands
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Chen L, Lam JCW, Tang L, Hu C, Liu M, Lam PKS, Zhou B. Probiotic Modulation of Lipid Metabolism Disorders Caused by Perfluorobutanesulfonate Pollution in Zebrafish. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:7494-7503. [PMID: 32459962 DOI: 10.1021/acs.est.0c02345] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
To determine whether and how probiotic supplement can alter gut microbiota dysbiosis and lipid metabolism disorders caused by perfluorobutanesulfonate (PFBS), the present study exposed adult zebrafish to 0, 10, and 100 μg/L PFBS for 28 days, with or without dietary administration of probiotic Lactobacillus rhamnosus. Regarding intestinal health and gut microbiota, probiotic supplement altered the innate toxicities of PFBS, depending on exposure concentration and the sex of the fish. Lactobacillus genus correlated positively (P < 0.001; r > 0.5) with other beneficial bacteria in the gut microbiota, thereby indirectly regulating host metabolic activities. In female fish, the PFBS and probiotic combination enhanced fatty acid synthesis and β-oxidation, but mitigated the accumulation of cholesterol in the blood compared with PFBS single exposure, highlighting the benefits of the probiotic to host health. In male zebrafish, probiotic administration antagonized the PFBS-induced disturbances of bile acid metabolism, presumably via farnesoid X receptor signaling. However, coexposure to PFBS and probiotic caused significant accumulation of triglyceride in male livers (2.6-fold relative to the control), implying the induction of hepatic steatosis. Overall, the present study underlined the potential of probiotics to modulate gut microbial dysbiosis and lipid metabolism disorders caused by PFBS exposure, which could provide implications to the application of probiotics in aquaculture.
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Affiliation(s)
- Lianguo Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - James C W Lam
- Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong SAR, P. R. China
| | - Lizhu Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chenyan Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430072, P. R. China
| | - Mengyuan Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Paul K S Lam
- State Key Laboratory of Marine Pollution and Department of Chemistry, City University of Hong Kong, Kowloon, Hong Kong SAR, P. R. China
| | - Bingsheng Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
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Mohamed Bakrim N, Mohd Shah ANS, Talib NA, Ab Rahman J, Abdullah A. Identification of Haptoglobin as a Potential Biomarker in Young Adults with Acute Myocardial Infarction by Proteomic Analysis. Malays J Med Sci 2020; 27:64-76. [PMID: 32788843 PMCID: PMC7409576 DOI: 10.21315/mjms2020.27.2.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 03/22/2020] [Indexed: 01/01/2023] Open
Abstract
Background Acute myocardial infarction (AMI) molecular research in young adults is still limited. The aim of this study is to identify AMI proteomic biomarker(s) in young adults. Methods This study comprised of two phases namely discovery and verification. In the discovery phase, proteins in the pooled plasma samples from young male adults between 18 and 45 years (10 AMI patients and 10 controls) were separated using two-dimensional electrophoresis. The protein spots that were expressed differently in the AMI patients were identified via matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry. The plasma concentrations of these proteins were quantified using enzyme-linked immunosorbent assay during the verification phase (40 AMI patients and 80 controls). Results Haptoglobin (Hp), apolipoprotein AI (Apo AI) and apolipoprotein AIV (Apo AIV) were up-regulated in the discovery phase. In the verification phase, the plasma concentration of Hp was significantly higher in AMI patients than the controls (P < 0.001). Logistic regression showed an association between Hp and AMI in young adults (odds ratio [OR] = 1.016, 95% CI: 1.002–1.030, P = 0.025) independent of other AMI risk factors. Hp was significantly correlated with high sensitivity C-reactive protein (hs-CRP) (r = 0.424, P < 0.001). Conclusion In young adults with AMI, plasma Hp concentrations were elevated and it is independently associated with AMI. A positive correlation with hs-CRP suggests Hp could be a potential biomarker of AMI in young adults.
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Affiliation(s)
- Norbaiyah Mohamed Bakrim
- Department of Basic Medical Sciences, Kulliyyah of Medicine, International Islamic University Malaysia, Pahang, Malaysia
| | - Aida Nur Sharini Mohd Shah
- Department of Internal Medicine, Kulliyyah of Medicine, International Islamic University Malaysia, Pahang, Malaysia
| | - Norlelawati A Talib
- Department of Pathology and Laboratory Medicine, Kulliyyah of Medicine, International Islamic University Malaysia, Pahang, Malaysia
| | - Jamalludin Ab Rahman
- Department of Community Medicine, Kulliyyah of Medicine, International Islamic University Malaysia, Pahang, Malaysia
| | - Aszrin Abdullah
- Department of Basic Medical Sciences, Kulliyyah of Medicine, International Islamic University Malaysia, Pahang, Malaysia
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ABCA1 gene R1587K polymorphism could be associated with metabolic syndrome and increased plasma triglyceride concentration in adults from northern Mexico. NUTR HOSP 2020; 37:944-950. [DOI: 10.20960/nh.03087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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Liu H, Deng Y, Wu L, Li Y, Lin N, Li W, Dong X, Ma L. Interleukin-1β Regulates Lipid Homeostasis in Human Glomerular Mesangial Cells. J Nutr Health Aging 2020; 24:246-250. [PMID: 32115603 DOI: 10.1007/s12603-019-1302-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Recent studies have shown that hyperlipidemia is closely related to the progression of kidney disease and glomerulosclerosis has similar pathophysiological mechanisms with atherosclerosis. Atherosclerosis is essentially a chronic inflammatory process and various kidney diseases are characterized by a micro-inflammatory state. Hyperlipidemia levels are not parallel to the degree of glomerulosclerosis, inflammatory factors together with lipids may contribute to the pathogenesis of glomerulosclerosis. Therefore, it is key to clarify lipid-mediated renal injury through studying the mechanism by which inflammation affects cholesterol homeostasis at the cellular level. Intracellular lipid homeostasis involves both lipid uptake and excretion, therefore in this study, we aimed to explore whether interleukin-1β (IL-1β) promotes the uptake of oxidized low-density lipoprotein (Ox-LDL) to increase in intracellular lipid levels, and to clarify the effect of IL-1β on the expression of lectin-like oxidized LDL receptor 1 (LOX-1) and ATP-binding cassette transporter A1 (ABCA1), which may regulate cholesterol homeostasis in human mesangial cells (HMCs). METHODS The effect of IL-1β on uptake of Ox-LDL labeled with fluorescent Dil (Dil-Ox-LDL) by HMCs was observed using laser confocal microscopy. The effect of IL-1β on LOX-1 and ABCA1 expression in HMCs was detected by polymerase chain reaction and western blotting. RESULTS Laser confocal microscopy revealed that HMCs took up Dil-Ox-LDL. Treatment of HMCs with 5 ng/ml IL-1β for 24 h significantly increased uptake of Dil-Ox-LDL. IL-1β also promoted LOX-1 mRNA and protein expression in a dose-dependent manner. Moreover, ABCA1 mRNA and protein expression were reduced by IL-1β in lipid-loaded HMCs in a dose-dependent manner. CONCLUSIONS IL-1β promotes the uptake of Ox-LDL and expression of LOX-1 in HMCs, whereas it inhibits expression of ABCA1 under lipid load. The imbalance in intracellular cholesterol resulted by IL-1β can in turn transform HMCs into foam cells and aggravate glomerulosclerosis.
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Affiliation(s)
- H Liu
- Dr. Hua Liu, Department of Nephrology, Xuan Wu Hospital, Capital Medical University, Beijing 100053, China, e-mail: , Tel: +(86)18911651038; Dr. Lina Ma, Department of Geriatrics, Xuan Wu Hospital, Capital Medical University, Beijing 100053, China, e-mail: , Tel: +(86)17600107787
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Karan S, Mohapatra A, Sahoo PK, Garg LC, Dixit A. Structural-functional characterization of recombinant Apolipoprotein A-I fromLabeo rohitademonstrates heat-resistant antimicrobial activity. Appl Microbiol Biotechnol 2019; 104:145-159. [DOI: 10.1007/s00253-019-10204-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/09/2019] [Accepted: 10/19/2019] [Indexed: 12/20/2022]
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Grinman DY, Careaga VP, Wellberg EA, Dansey MV, Kordon EC, Anderson SM, Maier MS, Burton G, MacLean PS, Rudolph MC, Pecci A. Liver X receptor-α activation enhances cholesterol secretion in lactating mammary epithelium. Am J Physiol Endocrinol Metab 2019; 316:E1136-E1145. [PMID: 30964702 PMCID: PMC6620573 DOI: 10.1152/ajpendo.00548.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 04/01/2019] [Accepted: 04/04/2019] [Indexed: 11/22/2022]
Abstract
Liver X receptors (LXRs) are ligand-dependent transcription factors activated by cholesterol metabolites. These receptors induce a suite of target genes required for de novo synthesis of triglycerides and cholesterol transport in many tissues. Two different isoforms, LXRα and LXRβ, have been well characterized in liver, adipocytes, macrophages, and intestinal epithelium among others, but their contribution to cholesterol and fatty acid efflux in the lactating mammary epithelium is poorly understood. We hypothesize that LXR regulates lipogenesis during milk fat production in lactation. Global mRNA analysis of mouse mammary epithelial cells (MECs) revealed multiple LXR/RXR targets upregulated sharply early in lactation compared with midpregnancy. LXRα is the primary isoform, and its protein levels increase throughout lactation in MECs. The LXR agonist GW3965 markedly induced several genes involved in cholesterol transport and lipogenesis and enhanced cytoplasmic lipid droplet accumulation in the HC11 MEC cell line. Importantly, in vivo pharmacological activation of LXR increased the milk cholesterol percentage and induced sterol regulatory element-binding protein 1c (Srebp1c) and ATP-binding cassette transporter a7 (Abca7) expression in MECs. Cumulatively, our findings identify LXRα as an important regulator of cholesterol incorporation into the milk through key nodes of de novo lipogenesis, suggesting a potential therapeutic target in women with difficulty initiating lactation.
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Affiliation(s)
- Diego Y Grinman
- Instituto de Fisiología, Biología Molecular y Neurociencias, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
| | - Valeria P Careaga
- Unidad De Microanálisis Y Métodos Físicos Aplicados a la Química Orgánica, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires, Buenos Aires , Argentina
| | - Elizabeth A Wellberg
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Denver, Colorado
| | - María V Dansey
- Unidad De Microanálisis Y Métodos Físicos Aplicados a la Química Orgánica, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Buenos Aires , Argentina
| | - Edith C Kordon
- Instituto de Fisiología, Biología Molecular y Neurociencias, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Buenos Aires , Argentina
| | - Steven M Anderson
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Denver, Colorado
| | - Marta S Maier
- Unidad De Microanálisis Y Métodos Físicos Aplicados a la Química Orgánica, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires, Buenos Aires , Argentina
| | - Gerardo Burton
- Unidad De Microanálisis Y Métodos Físicos Aplicados a la Química Orgánica, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales , Universidad de Buenos Aires, Buenos Aires , Argentina
| | - Paul S MacLean
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado, Anschutz Medical Campus, Denver, Colorado
| | - Michael C Rudolph
- Division of Endocrinology, Metabolism, and Diabetes, University of Colorado, Anschutz Medical Campus, Denver, Colorado
| | - Adali Pecci
- Instituto de Fisiología, Biología Molecular y Neurociencias, CONICET, Universidad de Buenos Aires , Buenos Aires , Argentina
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Buenos Aires , Argentina
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Inhibiting Extracellular Cathepsin D Reduces Hepatic Steatosis in Sprague⁻Dawley Rats †. Biomolecules 2019; 9:biom9050171. [PMID: 31060228 PMCID: PMC6571693 DOI: 10.3390/biom9050171] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/28/2019] [Accepted: 05/02/2019] [Indexed: 12/30/2022] Open
Abstract
Dietary and lifestyle changes are leading to an increased occurrence of non-alcoholic fatty liver disease (NAFLD). Using a hyperlipidemic murine model for non-alcoholic steatohepatitis (NASH), we have previously demonstrated that the lysosomal protease cathepsin D (CTSD) is involved with lipid dysregulation and inflammation. However, despite identifying CTSD as a major player in NAFLD pathogenesis, the specific role of extracellular CTSD in NAFLD has not yet been investigated. Given that inhibition of intracellular CTSD is highly unfavorable due to its fundamental physiological function, we here investigated the impact of a highly specific and potent small-molecule inhibitor of extracellular CTSD (CTD-002) in the context of NAFLD. Treatment of bone marrow-derived macrophages with CTD-002, and incubation of hepatic HepG2 cells with a conditioned medium derived from CTD-002-treated macrophages, resulted in reduced levels of inflammation and improved cholesterol metabolism. Treatment with CTD-002 improved hepatic steatosis in high fat diet-fed rats. Additionally, plasma levels of insulin and hepatic transaminases were significantly reduced upon CTD-002 administration. Collectively, our findings demonstrate for the first time that modulation of extracellular CTSD can serve as a novel therapeutic modality for NAFLD.
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Development of a Synthetic 3-ketosteroid Δ 1-dehydrogenase for the Generation of a Novel Catabolic Pathway Enabling Cholesterol Degradation in Human Cells. Sci Rep 2019; 9:5969. [PMID: 30979909 PMCID: PMC6461610 DOI: 10.1038/s41598-019-42046-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Accepted: 03/22/2019] [Indexed: 01/05/2023] Open
Abstract
Cholesterol is an essential component of membranes, which is acquired by cells via receptor-mediated endocytosis of lipoproteins or via de novo synthesis. In specialized cells, anabolic enzymes metabolize cholesterol, generating steroid hormones or bile acids. However, surplus cholesterol cannot be catabolized due to the lack of enzymes capable of degrading the cholestane ring. The inability to degrade cholesterol becomes evident in the development and progression of cardiovascular disease, where the accumulation of cholesterol/cholesteryl-esters in macrophages can elicit a maladaptive immune response leading to the development and progression of atherosclerosis. The discovery of cholesterol catabolic pathways in Actinomycetes led us to the hypothesis that if enzymes enabling cholesterol catabolism could be genetically engineered and introduced into human cells, the atherosclerotic process may be prevented or reversed. Comparison of bacterial enzymes that degrade cholesterol to obtain carbon and generate energy with the action of human enzymes revealed that humans lack a 3-ketosteroid Δ1-dehydrogenase (Δ1-KstD), which catalyzes the C-1 and C-2 desaturation of ring A. Here we describe the construction, heterologous expression, and actions of a synthetic humanized Δ1-KstD expressed in Hep3B and U-937 cells, providing proof that one of three key enzymes required for cholesterol ring opening can be functionally expressed in human cells.
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Zhao TY, Lei S, Huang L, Wang YN, Wang XN, Zhou PP, Xu XJ, Zhang L, Xu LW, Yang L. Associations of Genetic Variations in ABCA1 and Lifestyle Factors with Coronary Artery Disease in a Southern Chinese Population with Dyslipidemia: A Nested Case-Control Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16050786. [PMID: 30836684 PMCID: PMC6427557 DOI: 10.3390/ijerph16050786] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 02/06/2019] [Accepted: 02/26/2019] [Indexed: 01/22/2023]
Abstract
Coronary artery disease has become a major health concern over the past several decades. We aimed to explore the association of single nucleotide polymorphisms (SNPs) in the ATP-binding cassette subfamily A member 1 (ABCA1) and lifestyle factors with coronary artery disease (CAD) in dyslipidemia. This nested case-control study included 173 patients with CAD and 500 matched control individuals (1:3, case: control) from a district in southern China. We collected medical reports, lifestyle details, and blood samples of individuals with dyslipidemia and used the polymerase chain reaction-ligase detection reaction method to genotype the SNPs. The CC genotype of the additive and recessive models of rs4149339, together with regular intake of fried foods or dessert, increased the risk of CAD (adjusted odd ratio (OR) = 1.91, p = 0.030; adjusted OR = 1.97, p = 0.017; adjusted OR = 1.80, p = 0.002; adjusted OR = 1.98, p = 0.001). The AT + AA genotype of the dominant model of rs4743763 and moderate/heavy physical activity reduced the risk of CAD (adjusted OR = 0.66, p = 0.030; adjusted OR = 0.44, p = 0.001). The CT + CC genotype of the dominant model of rs2472386 reduced the risk of CAD only in males (adjusted OR = 0.36, p = 0.001). The interaction between rs4149339 and rs4743763 of ABCA1 and haplotype CTT (comprising rs4149339, rs4743763, and rs2472386) appeared to increase the risk of CAD (relative excess risk due to interaction (RERI) = 3.19, p = 0.045; OR = 1.49, p = 0.019). Polymorphisms of rs4149339, rs4743763 and rs2472386 in ABCA1 and three lifestyle factors (physical activity, fried food intake, and dessert intake) were associated with CAD in people with dyslipidemia in southern China. These results provide the theoretical basis for gene screening and the prevention of chronic cardiovascular diseases.
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Affiliation(s)
- Tian-Yu Zhao
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
- Medical School, Shihezi University, Shihezi 832000, China.
| | - Song Lei
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
- Medical School, Shihezi University, Shihezi 832000, China.
| | - Liu Huang
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Yi-Nan Wang
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Xiao-Ni Wang
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Ping-Pu Zhou
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Xiao-Jun Xu
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Long Zhang
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Liang-Wen Xu
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
| | - Lei Yang
- Medical School, Hangzhou Normal University, Hangzhou 310000, China.
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Fazel F, Naghibzadeh A, Mohammad Ramezanpour R, Bagheri R, Hamidi A, Rashidlamir A. Effect of Aerobic Exercise with and without Green Coffee Supplementation on Serum Apolipoprotein B and Atherogenic Indices of Overweight Men. MEDICAL LABORATORY JOURNAL 2019. [DOI: 10.29252/mlj.13.3.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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Proteomic Analysis of Liver from Human Lipoprotein(a) Transgenic Mice Shows an Oxidative Stress and Lipid Export Response. BIOMED RESEARCH INTERNATIONAL 2018; 2018:4963942. [PMID: 30596094 PMCID: PMC6286786 DOI: 10.1155/2018/4963942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/11/2018] [Indexed: 12/26/2022]
Abstract
Background Mouse models of hypercholesterolaemia have been used to identify arterial proteins involved in atherosclerosis. As the liver is extremely sensitive to dyslipidemia, one might expect major changes in the abundance of liver proteins in these models even before atherosclerosis develops. Methods Lipid levels were measured and a proteomic approach was used to quantify proteins in the livers of mice with an elevated low-density lipoprotein (LDL) and the presence of lipoprotein(a) [Lp(a)] but no atherosclerosis. Results The livers of Lp(a) mice showed an increased triglyceride but reduced phospholipid and oxidised lipid content. Two-dimensional gel electrophoresis and mass spectrometry analysis identified 24 liver proteins with significantly increased abundance in Lp(a) mice (P<0.05). A bioinformatic analysis of the 24 proteins showed the major effect was that of an enhanced antioxidant and lipid efflux response with significant increases in antioxidant (Park7, Gpx1, Prdx6, and Sod1) and lipid metabolism proteins (Fabp4, Acaa2, apoA4, and ApoA1). Interestingly, human liver cells treated with Lp(a) showed significant increases in Gpx1 and Prdx6 but not Sod1 or Park7. Conclusions The presence of human LDL and Lp(a) in mice promotes an enhanced flux of lipids into the liver which elicits an antioxidant and lipid export response before the onset of atherosclerosis. The antioxidant response can be reproduced in human liver cells treated with Lp(a).
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Identifying genetic markers associated with susceptibility to cardiovascular diseases. Future Sci OA 2018; 5:FSO350. [PMID: 30652019 PMCID: PMC6331704 DOI: 10.4155/fsoa-2018-0031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 09/18/2018] [Indexed: 12/25/2022] Open
Abstract
The development of cardiovascular diseases (CVDs) is due to a complex interaction between the genome and the environment. Understanding how genetic differences in individuals contribute to their susceptibility to CVDs can help guide practitioners to give the best advice to achieve a favorable outcome for the patient. As genome technologies evolve, genotyping of individuals could be available to all patients using a simple saliva test. Large-scale genome-wide association studies and meta analyses have provided powerful insights into polymorphisms that may be predictive of disease and an individual's response to certain nutrients, but moving forward it is imperative that these insights can be applied in the medical setting to reduce the incidence and mortality of CVDs. Cardiovascular diseases (CVDs) are the leading cause of death worldwide, and while most CVDs can be prevented by adopting a healthy lifestyle, this is only half the story. Evidence suggests changes in an individual's genes or DNA can cause some form of CVDs, highlighting a complex relationship between genes and the environment. Genotyping, a process used to determine genetic differences within an individual's DNA, can provide doctors with relevant information to identify individuals who are at high risk of developing CVDs. This would allow treatment to begin early and encourage individuals to adopt a healthy lifestyle to reduce their risk.
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Li BQ, Zhong YC, Wang X. Plasma oxidized high-density lipoprotein and glycated apolipoprotein A-I concentrations in ST-segment elevation myocardial infarction patients with stress hyperglycaemia or high thrombus burden. Ups J Med Sci 2018; 123:158-166. [PMID: 30259778 PMCID: PMC6198222 DOI: 10.1080/03009734.2018.1494229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND High-density lipoprotein (HDL) particles exert many beneficial actions that may help protect against cardiovascular disease. However, recent work has demonstrated that HDL can be oxidized and glycated under certain circumstances and may become pro-atherogenic. The present study investigated the impact of oxidized high-density lipoprotein (ox-HDL) and glycated apolipoprotein A-I (gly-ApoA-I) in patients presenting with ST-elevation myocardial infarction (STEMI). METHODS We assessed 55 consecutive patients with STEMI. Patients were divided into: (1) a stress hyperglycaemia (SH) and a no SH group; and (2) a high thrombus burden (HTB) group and a low thrombus burden (LTB) group. Meanwhile, 48 healthy volunteers were recruited as controls. Plasma ox-HDL and gly-ApoA-I concentrations were measured on admission and 7 days after admission. RESULTS Higher concentrations of ox-HDL and gly-ApoA-I were found in the STEMI group than in the control group on admission and at d7. Further subgroup analysis showed that ox-HDL and gly-ApoA-I were higher in the SH group than in the no SH group at both time points; the HTB group had higher ox-HDL and ox-HDL/HDL-C levels than the LTB group on admission and at d7. However, gly-ApoA-I and the relative intensity of ApoA-I glycation showed no significant differences between the HTB and LTB groups. CONCLUSIONS The present data indicate that: (1) SH is associated with increased plasma concentrations of ox-HDL and gly-ApoA-I and therefore aggressive treatment is recommended; and (2) that ox-HDL and ox-HDL/HDL-C were higher in the HTB group and may be used to quantify thrombus burden.
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Affiliation(s)
- Bing-Qiang Li
- The First Affiliated Hospital, and College of Clinical Medicine, Henan University of Science and Technology, Luoyang, P. R. China
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Yu-Cheng Zhong
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
| | - Xiang Wang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P.R. China
- CONTACT Xiang Wang Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan430022, P.R. China
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Liang Z, Li W, Yang S, Liu Z, Sun X, Gao X, Yu G. Tangier disease may cause early onset of atherosclerotic cerebral infarction: A case report. Medicine (Baltimore) 2018; 97:e12472. [PMID: 30278532 PMCID: PMC6181625 DOI: 10.1097/md.0000000000012472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
RATIONALE The present study explored the relationship between the adenosine triphosphate (ATP)-binding cassette A1 (ABCA1) gene, atherosclerosis, and cerebral infarction. The diagnosis and treatment ideas of stroke caused by Tangier disease via the summary of the diagnosis and treatment process of one case with juvenile stroke were explored. The relevant literature on the clinical manifestations, laboratory examinations, and treatment of Tangier disease was reviewed. PATIENT CONCERNS The brain magnetic resonance imaging (MRI) of a juvenile man with acute onset of sudden right limb weakness and speechlessness revealed infarct lesions. The laboratory tests found low serum high-density lipoprotein (HDL), while further genetic testing identified ABCD1 gene mutation. The mother also carried the mutant gene. DIAGNOSES Tangier disease was diagnosed. INTERVENTIONS Statin treatment was administered for platelet aggregation. OUTCOMES After 3 years of follow-up, the patient was declared to be in a stable condition. LESSONS ABCA1 gene mutation caused early onset of atherosclerosis, leading to the occurrence of cerebral infarction. The cerebral infarction associated with reduced high-density lipoprotein (HDL), was under intensive focus with respect to ABCA1 gene. Child and Juvenile stroke patients with low HDL should not be excluded from the possibility of Tangier disease.
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Affiliation(s)
- Zhigang Liang
- Department of Neurology, Yantai YuHuangDing Hospital Affiliated to Qingdao University, Yantai, Shandong
| | - Wei Li
- Department of Neurology, Beijing Tiantan Hospital, Beijing, China
| | - Shaowan Yang
- Department of Neurology, Yantai YuHuangDing Hospital Affiliated to Qingdao University, Yantai, Shandong
| | - Zhuli Liu
- Department of Neurology, Yantai YuHuangDing Hospital Affiliated to Qingdao University, Yantai, Shandong
| | - Xuwen Sun
- Department of Neurology, Yantai YuHuangDing Hospital Affiliated to Qingdao University, Yantai, Shandong
| | - Xiaoyu Gao
- Department of Neurology, Yantai YuHuangDing Hospital Affiliated to Qingdao University, Yantai, Shandong
| | - Guoping Yu
- Department of Neurology, Yantai YuHuangDing Hospital Affiliated to Qingdao University, Yantai, Shandong
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Kallol S, Huang X, Müller S, Ontsouka CE, Albrecht C. Novel Insights into Concepts and Directionality of Maternal⁻Fetal Cholesterol Transfer across the Human Placenta. Int J Mol Sci 2018; 19:ijms19082334. [PMID: 30096856 PMCID: PMC6121295 DOI: 10.3390/ijms19082334] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 07/14/2018] [Accepted: 07/23/2018] [Indexed: 12/19/2022] Open
Abstract
Cholesterol is indispensable for cellular membrane composition and function. It is also a precursor for the synthesis of steroid hormones, which promote, among others, the maturation of fetal organs. A role of the ATP-binding-cassette-transporter-A1 (ABCA1) in the transport of maternal cholesterol to the fetus was suggested by transferring cholesterol to apolipoprotein-A-1 (apo-A1), but the directionality of the apoA-1/ABCA1-dependent cholesterol transport remains unclear. We isolated primary trophoblasts from term placentae to test the hypotheses that (1) apoA-1/ABCA1 dispatches cholesterol mainly towards the fetus to support fetal developmental maturation at term, and (2) differentiated syncytiotrophoblasts (STB) exert higher cholesterol transport activity than undifferentiated cytotrophoblasts (CTB). As experimental models, we used (1) trophoblast monolayers grown on Transwell® system consisting of apical (maternal-like) and basal (fetal-like) compartments, and (2) trophoblasts grown on conventional culture plates at CTB and STB stages. Surprisingly, apoA-1-mediated cholesterol efflux operated almost exclusively at the apical-maternal side, where ABCA1 was also localized by immunofluorescence. We found greater cholesterol efflux capacity in STB, which was increased by liver-X-receptor agonist treatment and decreased by ABCA1 inhibition. We conclude that at term the apoA-1/ABCA1 pathway is rather involved in cholesterol transport to the mother than in transfer to the fully developed fetus.
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Affiliation(s)
- Sampada Kallol
- Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, CH-3012 Bern, Switzerland.
| | - Xiao Huang
- Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, CH-3012 Bern, Switzerland.
- Swiss National Center of Competence in Research, NCCR TransCure, University of Bern, CH-3012 Bern, Switzerland.
| | - Stefan Müller
- Department of BioMedical Research, University of Bern, CH-3012 Bern, Switzerland.
| | - Corneille Edgar Ontsouka
- Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, CH-3012 Bern, Switzerland.
| | - Christiane Albrecht
- Institute of Biochemistry and Molecular Medicine, Faculty of Medicine, University of Bern, CH-3012 Bern, Switzerland.
- Swiss National Center of Competence in Research, NCCR TransCure, University of Bern, CH-3012 Bern, Switzerland.
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Dahli L, Atrahimovich D, Vaya J, Khatib S. Lyso-DGTS lipid isolated from microalgae enhances PON1 activities in vitro and in vivo, increases PON1 penetration into macrophages and decreases cellular lipid accumulation. Biofactors 2018; 44:299-310. [PMID: 29659105 DOI: 10.1002/biof.1427] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 03/06/2018] [Accepted: 03/16/2018] [Indexed: 12/21/2022]
Abstract
High-density lipoprotein (HDL) plays an important role in preventing atherosclerosis. The antioxidant effect of HDL is mostly associated with paraoxonase 1 (PON1) activity. Increasing PON1 activity using nutrients might improve HDL function and quality and thus, decrease atherosclerotic risk. We previously isolated and identified a novel active compound, lyso-DGTS (C20:5,0) from Nannochloropsis sp. ethanol extract. In the present study, its effect on PON1 activities was examined and the mechanism by which the compound affects PON1 activity was explored. Lyso-DGTS elevated recombinant PON1 (rePON1) lactonase and esterase activities in a dose- and time-responsive manner, and further stabilized and preserved rePON1 lactonase activity. Incubation of lyso-DGTS with human serum for 4 h at 37 °C also increased PON1 lactonase activity in a dose-responsive manner. Using tryptophan-fluorescence-quenching assay, lyso-DGTS was found to interact with rePON1 spontaneously with negative free energy (ΔG = -22.87 kJ mol-1 at 25 °C). Thermodynamic parameters and molecular modeling calculations showed that the main interaction of lyso-DGTS with the enzyme is through a hydrogen bond with supporting van der Waals interactions. Furthermore, lyso-DGTS significantly increased rePON1 influx into macrophages and prevented lipid accumulation in macrophages stimulated with oxidized low-density lipid dose-dependently. In vivo supplementation of lyso-DGTS to the circulation of mice fed a high-fat diet via osmotic mini-pumps implanted subcutaneously significantly increased serum PON1 lactonase activity and decreased serum glucose concentrations to the level of mice fed a normal diet. Our findings suggest a beneficial effect of lyso-DGTS on increasing PON1 activity and thus, improving HDL quality and atherosclerotic risk factors. © 2018 BioFactors, 44(3):299-310, 2018.
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Affiliation(s)
- Loureen Dahli
- Department of Oxidative Stress and Human Diseases, MIGAL-Galilee Research Institute, Kiryat Shmona 11016, Israel
- Department of Biotechnology, Tel-Hai College, Upper Galilee 12210, Israel
| | - Dana Atrahimovich
- Department of Oxidative Stress and Human Diseases, MIGAL-Galilee Research Institute, Kiryat Shmona 11016, Israel
| | - Jacob Vaya
- Department of Oxidative Stress and Human Diseases, MIGAL-Galilee Research Institute, Kiryat Shmona 11016, Israel
- Department of Biotechnology, Tel-Hai College, Upper Galilee 12210, Israel
| | - Soliman Khatib
- Department of Oxidative Stress and Human Diseases, MIGAL-Galilee Research Institute, Kiryat Shmona 11016, Israel
- Department of Biotechnology, Tel-Hai College, Upper Galilee 12210, Israel
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Cheon EJ, Cha DH, Cho SK, Noh HM, Park S, Kang SM, Gee HY, Lee SH. Novel association between CDKAL1 and cholesterol efflux capacity: Replication after GWAS-based discovery. Atherosclerosis 2018; 273:21-27. [PMID: 29674289 DOI: 10.1016/j.atherosclerosis.2018.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 03/09/2018] [Accepted: 04/11/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS Although the importance of the functional properties of high-density lipoprotein (HDL) has been increasingly emphasized, studies on the genetic factors associated with HDL function are highly limited. The aim of this study was to identify genetic variants associated with an individual's cholesterol efflux capacity (CEC) using a genome-wide association study approach. METHODS This study included a discovery group of 607 subjects with coronary artery disease and an independent replication group of 158 subjects. CEC was assessed using a radioisotope and ApoB-depleted serum. Genome-wide associations between the adjusted CEC and genotyped and imputed variants were examined with linear regression, assuming an additive genetic model. Finally, adjustments were made for confounding parameters to assess the independence of associations and to determine R2 of overall model on CEC. RESULTS In the discovery group, 631 variants showed significant association with CEC, and five of them were found to correlate with CEC in the replication group. One of them was located near LOC541471 in 2q13, whereas the other four (rs117835232, rs117252933, rs118064592, and rs150434350) were located in CDKAL1 in 6p22.3. The association between the presence of any CDKAL1 variant and CEC was significant after adjustment for clinical and laboratory variables. High-density lipoprotein-cholesterol levels also showed a very significant association with CEC. Body mass index, current alcohol use, triglycerides levels, low-density lipoprotein-cholesterol levels and statin use showed borderline associations with CEC. CONCLUSIONS We identified and replicated genetic variants associated with CEC using a genome-wide association study-based approach. CDKAL1 variants showed correlations with CEC independent of HDL-cholesterol levels and other clinical characteristics.
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Affiliation(s)
- Eun Jeong Cheon
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Do Hyeon Cha
- Yonsei University College of Medicine, Seoul, South Korea
| | - Sung Kweon Cho
- Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Hye-Min Noh
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Sungha Park
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, South Korea; Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Seok-Min Kang
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, South Korea; Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Heon Yung Gee
- Department of Pharmacology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, South Korea.
| | - Sang-Hak Lee
- Cardiovascular Research Institute, Yonsei University College of Medicine, Seoul, South Korea; Division of Cardiology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea.
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Brassard D, Arsenault BJ, Boyer M, Bernic D, Tessier-Grenier M, Talbot D, Tremblay A, Levy E, Asztalos B, Jones PJH, Couture P, Lamarche B. Saturated Fats from Butter but Not from Cheese Increase HDL-Mediated Cholesterol Efflux Capacity from J774 Macrophages in Men and Women with Abdominal Obesity. J Nutr 2018; 148:573-580. [PMID: 29659963 PMCID: PMC7328473 DOI: 10.1093/jn/nxy014] [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: 09/07/2017] [Accepted: 01/16/2018] [Indexed: 12/27/2022] Open
Abstract
Background Recent evidence suggests that the association between dietary saturated fatty acids (SFAs) and coronary artery disease risk varies according to food sources. How SFAs from butter and cheese influence HDL-mediated cholesterol efflux capacity (CEC), a key process in reverse cholesterol transport, is currently unknown. Objective In a predefined secondary analysis of a previously published trial, we have examined how diets rich in SFAs from either cheese or butter influence HDL-mediated CEC, compared with diets rich in either monounsaturated fatty acids (MUFAs) or polyunsaturated fatty acids (PUFAs). Methods In a randomized crossover controlled consumption trial, 46 men and women with abdominal obesity consumed 5 isocaloric diets, each for 4 wk. Two diets were rich in SFAs either from cheese (CHEESE) or butter (BUTTER) [12.4-12.6% of energy (%E) as SFAs, 32%E as fat, 52%E as carbohydrates]. In 2 other diets, SFAs (5.8%E) were replaced with either MUFAs from refined olive oil (MUFA) or PUFAs from corn oil (PUFA). Finally, a lower fat and carbohydrate diet was used as a control (5.8%E as SFAs, 25.0%E as fat, 59%E as carbohydrates; CHO). Post-diet HDL-mediated CEC was determined ex vivo using radiolabelled J774 macrophages incubated with apolipoprotein B-depleted serum from the participants. Results Mean (±SD) age was 41.4 ± 14.2 y, and waist circumference was 107.6 ± 11.5 cm in men and 94.3 ± 12.4 cm in women. BUTTER and MUFA increased HDL-mediated CEC compared with CHEESE (+4.3%, P = 0.026 and +4.7%, P = 0.031, respectively). Exploring the significant diet × sex interaction (P = 0.044) revealed that the increase in HDL-mediated CEC after BUTTER compared with CHEESE was significant among men (+6.0%, P = 0.047) but not women (+2.9%, P = 0.19), whereas the increase after MUFA compared with CHEESE was significant among women (+9.1%, P = 0.008) but not men (-0.6%, P = 0.99). Conclusion These results provide evidence of a food matrix effect modulating the impact of dairy SFAs on HDL-mediated CEC with potential sex-related differences that deserve further investigation. This trial was registered at clinicaltrials.gov as NCT02106208.
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Affiliation(s)
- Didier Brassard
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Benoît J Arsenault
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Marjorie Boyer
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Daniela Bernic
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Maude Tessier-Grenier
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Denis Talbot
- Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Angelo Tremblay
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Emile Levy
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Bela Asztalos
- Cardiovascular Nutrition Laboratory, Human Nutrition Research Center on Aging, Tufts University, Boston, MA
| | - Peter JH Jones
- Richardson Centre for Functional Foods and Nutraceuticals (RCFFN), University of Manitoba, Winnipeg, Canada
| | - Patrick Couture
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada
| | - Benoît Lamarche
- Institute of Nutrition and Functional Foods (INAF), School of Nutrition, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ) and Department of Medicine, Department of Social and Preventive Medicine, CHU de Quebec Research Center, and Department of Kinesiology, Faculty of Medicine, Laval University, Quebec, Canada,Address correspondence to BL (e-mail: )
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Kim MJ, Lee YJ, Yoon YS, Kim M, Choi JH, Kim HS, Kang JL. Apoptotic cells trigger the ABCA1/STAT6 pathway leading to PPAR-γ expression and activation in macrophages. J Leukoc Biol 2018; 103:885-895. [PMID: 29603355 DOI: 10.1002/jlb.2a0817-341rr] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 02/06/2017] [Accepted: 02/25/2018] [Indexed: 11/12/2022] Open
Abstract
The signal transducer and activator of transcription 6 (STAT6) transcription factor activates peroxisome proliferator-activated receptor gamma (PPAR-γ)-regulated gene expression in immune cells. We investigated proximal membrane signaling that was initiated in macrophages after exposure to apoptotic cells that led to enhanced PPAR-γ expression and activity, using specific siRNAs for ABCA1, STAT6, and PPAR-γ, or their antagonists. The interactions between mouse bone marrow-derived macrophages or RAW 264.7 cells and apoptotic Jurkat cells, but not viable cells, resulted in the induction of STAT6 phosphorylation as well as PPAR-γ expression and activation. Knockdown of ATP-binding cassette transporter A1 (ABCA1) after the transfection of macrophages with ABCA1-specific siRNAs reduced apoptotic cell-induced STAT6 phosphorylation as well as PPAR-γ mRNA and protein expression. ABCA1 knockdown also reduced apoptotic cell-induced liver X receptor α (LXR-α) mRNA and protein expression. Moreover, inhibition of STAT6 with specific siRNAs or the pharmacological inhibitor AS1517499AS reversed the induction of PPAR-γ, LXR-α, and ABCA1 by apoptotic Jurkat cells. PPAR-γ-specific siRNAs or the PPAR-γ antagonist GW9662 inhibited apoptotic cell-induced increases in LXR-α and ABCA1 mRNA and protein levels. Thus, these results indicate that apoptotic cells trigger the ABCA1/STAT6 pathway, leading to the activation of the PPAR-γ/LXR-α/ABCA1 pathway in macrophages.
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Affiliation(s)
- Myeong-Joo Kim
- Department of Physiology, Ewha Womans University, Seoul, Korea
| | - Ye-Ji Lee
- Department of Physiology, Ewha Womans University, Seoul, Korea
| | - Young-So Yoon
- Department of Physiology, Ewha Womans University, Seoul, Korea
| | - Minsuk Kim
- Department of Pharmacology, Ewha Womans University, Seoul, Korea.,Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Ji Ha Choi
- Department of Pharmacology, Ewha Womans University, Seoul, Korea.,Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Hee-Sun Kim
- Department of Molecular Medicine, Ewha Womans University, Seoul, Korea.,Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Jihee Lee Kang
- Department of Physiology, Ewha Womans University, Seoul, Korea.,Tissue Injury Defense Research Center, College of Medicine, Ewha Womans University, Seoul, Korea
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Tang W, Ma W, Ding H, Lin M, Xiang L, Lin G, Zhang Z. Adenylyl cyclase 1 as a major isoform to generate cAMP signaling for apoA-1-mediated cholesterol efflux pathway. J Lipid Res 2018; 59:635-645. [PMID: 29444935 DOI: 10.1194/jlr.m082297] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 02/06/2018] [Indexed: 02/06/2023] Open
Abstract
HDL apoA-1-mediated cholesterol efflux pathway requires multiple cellular proteins and signal transduction processes, including adenylyl cyclase (AC)/cAMP signaling. Due to the existence of multiple transmembrane AC isoforms, it was not known how many AC isoforms are expressed and which ones are essential for cholesterol efflux in macrophage foam cells. These questions were investigated in THP-1 macrophages in this study. Quantitative RT-PCR detected mRNAs for all nine transmembrane AC isoforms, but only the mRNA and protein of the AC1 isoform were consistently upregulated by cholesterol loading and apoA-1. AC1 shRNA interference decreased AC1 mRNA and protein levels, resulting in reduction of apoA-1-mediated cAMP production and cholesterol efflux, while the intracellular cholesterol levels remained high. Confocal microscopy showed that apoA-1 promoted translocation of cholesterol and formation of cholesterol-apoA-1 complexes (protrusions) on the cholesterol-loaded macrophage surface. AC1 shRNA-interfered macrophages showed no translocation of cholesterol to the cell surface. AC1 shRNA interference also disrupted cellular localization of the intracellular cholesterol indicator protein adipophillin, and the expression as well as surface translocation of ABCA1. Together, our results show that AC1 is a major isoform for apoA-1-activated cAMP signaling to promote cholesterol transport and exocytosis to the surface of THP-1 macrophage foam cells.
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Affiliation(s)
- Wanze Tang
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808
| | - Weilie Ma
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808
| | - Hang Ding
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808
| | - Margarita Lin
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808
| | - Le Xiang
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808
| | - Guorong Lin
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808.
| | - Zhizhen Zhang
- Department of Biochemistry and Molecular Biology, Guangdong Medical University, Dongguan, Guangdong, China 523808.
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Sasaki K, Tachikawa M, Uchida Y, Hirano S, Kadowaki F, Watanabe M, Ohtsuki S, Terasaki T. ATP-Binding Cassette Transporter A Subfamily 8 Is a Sinusoidal Efflux Transporter for Cholesterol and Taurocholate in Mouse and Human Liver. Mol Pharm 2018; 15:343-355. [DOI: 10.1021/acs.molpharmaceut.7b00679] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kazunari Sasaki
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Masanori Tachikawa
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Yasuo Uchida
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Satoshi Hirano
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Fumito Kadowaki
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Michitoshi Watanabe
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
| | - Sumio Ohtsuki
- Department of Pharmaceutical Microbiology, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8555, Japan
| | - Tetsuya Terasaki
- Membrane Transport
and Drug Targeting Laboratory, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai 980-8578, Japan
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Taghipoor Asramy A, Ghanbari-Niaki A, Hakemi S, Naghizadeh Qomi M, Moghanny Bashi MM. Effect of 12 Weeks of Intense Endurance Training and Bee Pollen Consumption on ABCA1 Gene Expression in Small Intestine, Liver and Gastrocnemius Muscle of Male Rats. MEDICAL LABORATORY JOURNAL 2018. [DOI: 10.29252/mlj.12.1.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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