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Tamel Selvan K, Goon JA, Makpol S, Tan JK. Therapeutic Potentials of Microalgae and Their Bioactive Compounds on Diabetes Mellitus. Mar Drugs 2023; 21:462. [PMID: 37755075 PMCID: PMC10532649 DOI: 10.3390/md21090462] [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: 06/28/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 09/28/2023] Open
Abstract
Diabetes mellitus is a metabolic disorder characterized by hyperglycemia due to impaired insulin secretion, insulin resistance, or both. Oxidative stress and chronic low-grade inflammation play crucial roles in the pathophysiology of diabetes mellitus. There has been a growing interest in applying natural products to improve metabolic derangements without the side effects of anti-diabetic drugs. Microalgae biomass or extract and their bioactive compounds have been applied as nutraceuticals or additives in food products and health supplements. Several studies have demonstrated the therapeutic effects of microalgae and their bioactive compounds in improving insulin sensitivity attributed to their antioxidant, anti-inflammatory, and pancreatic β-cell protective properties. However, a review summarizing the progression in this topic is lacking despite the increasing number of studies reporting their anti-diabetic potential. In this review, we gathered the findings from in vitro, in vivo, and human studies to discuss the effects of microalgae and their bioactive compounds on diabetes mellitus and the mechanisms involved. Additionally, we discuss the limitations and future perspectives of developing microalgae-based compounds as a health supplement for diabetes mellitus. In conclusion, microalgae-based supplementation has the potential to improve diabetes mellitus and be applied in more clinical studies in the future.
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Affiliation(s)
| | | | | | - Jen Kit Tan
- Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM), Jalan Ya’acob Latif, Bandar Tun Razak, Cheras, Kuala Lumpur 56000, Malaysia
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2
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Allophylus africanus Stem Bark Extract Modulates the Mitochondrial Apoptotic Pathway in Human Stomach Cancer Cells. Life (Basel) 2023; 13:life13020406. [PMID: 36836763 PMCID: PMC9964695 DOI: 10.3390/life13020406] [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: 12/13/2022] [Revised: 01/04/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
The present work aimed to detail the mechanisms elicited by Allophylus africanus P. Beauv. stem bark extract in human stomach cancer cells and to identify the bioactives underlying the cytotoxicity. MTT reduction and LDH leakage assays allowed characterizing the cytotoxic effects in AGS cells, which were further detailed by morphological analysis using phalloidin and Hoechst 33258. Proapoptotic mechanisms were elucidated through a mitochondrial membrane potential assay and by assessing the impact upon the activity of caspase-9 and -3. The extract displayed selective cytotoxicity against AGS cells. The absence of plasma membrane permeabilization, along with apoptotic body formation, suggested that pro-apoptotic effects triggered cell death. Intrinsic apoptosis pathway activation was verified, as mitochondrial membrane potential decrease and activation of caspase-9 and -3 were observed. HPLC-DAD profiling enabled the identification of two apigenin-di-C-glycosides, vicenin-2 (1) and apigenin-6-C-hexoside-8-C-pentoside (3), as well as three mono-C-glycosides-O-glycosylated derivatives, apigenin-7-O-hexoside-8-C-hexoside (2), apigenin-8-C-(2-rhamnosyl)hexoside (4) and apigenin-6-C-(2-rhamnosyl)hexoside (5). Isovitexin-2″-O-rhamnoside (5) is the main constituent, accounting for nearly 40% of the total quantifiable flavonoid content. Our results allowed us to establish the relationship between the presence of vicenin-2 and other apigenin derivatives with the contribution to the cytotoxic effects on the presented AGS cells. Our findings attest the anticancer potential of A. africanus stem bark against gastric adenocarcinoma, calling for studies to develop herbal-based products and/or the use of apigenin derivatives in chemotherapeutic drug development.
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Yu Z, Zhang J, Liang Z, Wu J, Liu K, You G. Pancreatic Hormone Insulin Modulates Organic Anion Transporter 1 in the Kidney: Regulation via Remote Sensing and Signaling Network. AAPS J 2023; 25:13. [PMID: 36627500 PMCID: PMC10695010 DOI: 10.1208/s12248-022-00778-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/09/2022] [Indexed: 01/11/2023] Open
Abstract
Organic anion transporter 1 (OAT1) expressed in the kidney plays an important role in the elimination of numerous anionic drugs used in the clinic. We report here that insulin, a pancreas-secreted hormone, regulated the expression and activity of kidney-specific OAT1 both in cultured cells and in rats. We showed that treatment of OAT1-expressing cells with insulin led to an increase in OAT1 expression, transport activity, and SUMOylation. Such insulin-induced increase was blocked by afuresertib, a specific inhibitor for protein kinase B (PKB), suggesting insulin regulates OAT1 through PKB signaling pathway. Furthermore, insulin stimulated transport activity and SUMOylation of endogenously expressed OAT1 in rat kidneys. In conclusion, our data support a remote sensing and signaling model, in which OAT1 plays an essential role in intercellular and inter-organ communication and in maintaining local and whole-body homeostasis. Such complex and dedicated communication is carried out by insulin, and PKB signaling and membrane sorting.
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Affiliation(s)
- Zhou Yu
- Department of Pharmaceutics, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA
| | - Jinghui Zhang
- Department of Pharmaceutics, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA
| | - Zhengxuan Liang
- Department of Pharmaceutics, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA
| | - Jingjing Wu
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Kexin Liu
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Guofeng You
- Department of Pharmaceutics, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, New Jersey, 08854, USA.
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4
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Sulfianti A, Firdausi N, Nurhadi N, Ngatinem N, Agustini K, Ningsih S. Antidiabetic activity of Anredera cordifolia (Ten.) Stennis extracts with different ethanol percentages: an evaluation based on in vitro, in vivo, and molecular studies. PHARMACIA 2023. [DOI: 10.3897/pharmacia.70.e94899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Anredera cordifolia (Ten.) Stennis, also known as Binahong (B), is an Indonesian plant used to treat diabetes. The purpose of this study was to determine the best extragent for preparing Binahong extract as an antidiabetic agent using different concentrations of ethanol (50%, 70%, and 96%), labelled as BE50%, BE70%, and BE96%. An alpha-glucosidase inhibiting assay was used to assess the activity. The most active extract was tested in vivo assay using an oral glucose tolerance test (OGTT) and alloxan-high feed diet (alloxan-HFD)-induced diabetes in rats, with glucose level and beta cell Langerhans repair as parameters. A molecular assay was also performed to look into the expression of homeostasis regulator genes on 3T3-L1 adipose cells. The results showed that 96% ethanol extract (BE96%) inhibited alpha-glucosidase the most effectively (IC50 119.78± 11.14 μg/mL). The in vivo assay revealed that the treatment BE96% at 250 mg/kg BW for 21 consecutive days significantly reduced plasma glucose levels in Type 2 DM rats compared to the control group (p ≤ .05) with improved of Langerhans beta cells. BE96% also significantly reduced postprandial glucose levels. At the cellular level, Oil-Red-O staining revealed that differentiated adipocytes treated with BE96% had the highest lipid absorbance (p ≤ .05), compared to the control. BE96% significantly increased the expression of Glucose Transporter Isoform 4 (GLUT4) at the molecular level. It could be concluded that BE96% exhibited the best antidiabetic properties.
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5
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Optimizing of the extraction conditions for anthocyanin’s from purple corn flour (Zea mays L): evidences on selected properties of optimized extract. Food Chem X 2022; 17:100521. [DOI: 10.1016/j.fochx.2022.100521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022] Open
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How to Use Respiratory Chain Inhibitors in Toxicology Studies-Whole-Cell Measurements. Int J Mol Sci 2022; 23:ijms23169076. [PMID: 36012337 PMCID: PMC9409450 DOI: 10.3390/ijms23169076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/01/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022] Open
Abstract
Mitochondrial electron transport chain (ETC) inhibition is a phenomenon interesting in itself and serves as a tool for studying various cellular processes. Despite the fact that searching the term “rotenone” in PubMed returns more than 6900 results, there are many discrepancies regarding the directions of changes reported to be caused by this RTC inhibitor in the delicate redox balance of the cell. Here, we performed a multifaceted study of the popular ETC inhibitors rotenone and antimycin A, involving assessment of mitochondrial membrane potential and the production of hydrogen peroxide and superoxide anions at cellular and mitochondrial levels over a wide range of inhibitor concentrations (1 nmol/dm3–100 µmol/dm3). All measurements were performed with whole cells, with accompanying control of ATP levels. Antimycin A was more potent in hindering HepG2 cells’ abilities to produce ATP, decreasing ATP levels even at a 1 nmol/dm3 concentration, while in the case of rotenone, a 10,000-times greater concentration was needed to produce a statistically significant decrease. The amount of hydrogen peroxide produced in the course of antimycin A biological activity increased rapidly at low concentrations and decreased below control level at a high concentration of 100 µmol/dm3. While both inhibitors influenced cellular superoxide anion production in a comparable manner, rotenone caused a greater increase in mitochondrial superoxide anions compared to a modest impact for antimycin A. IC50 values for rotenone and antimycin A with respect to HepG2 cell survival were of the same order of magnitude, but the survival curve of cells treated with rotenone was clearly biphasic, suggesting a concentration-dependent mode of biological action. We propose a clear experimental setup allowing for complete and credible analysis of the redox state of cells under stress conditions which allows for better understanding of the effects of ETC inhibition.
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Frezza C, Bozzato G, Sciubba F, Serafini I, Franceschin M, Curini R, Cianfaglione K, Venditti A, Bianco A, Serafini M, Foddai S. Phytochemical analysis on the aerial parts of Teucrium capitatum L. with aspects of chemosystematics and ethnobotany. Nat Prod Res 2022:1-10. [PMID: 35648096 DOI: 10.1080/14786419.2022.2081967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The phytochemical analysis on the aerial parts of Teucrium capitatum L. collected from a new population in Central Italy, led to the identification of eight compounds, i.e. pheophytin a (1), poliumoside (2), apigenin (3), luteolin (4), cirsimaritin (5), cirsiliol (6), 8-O-acetyl-harpagide (7) and teucardoside (8) belonging to four different classes of secondary metabolites. Pheophytin a (1) represents a newly identified compound in the genus whereas compounds (7-8) are newly identified compound in the species. The chemotaxonomic and ethnobotanical aspects relative to the presence of these compounds were widely discussed suggesting important conclusions for both.
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Affiliation(s)
- Claudio Frezza
- Dipartimento di Biologia Ambientale, Università di Roma "La Sapienza", Rome, Italy
| | - Gianluca Bozzato
- Dipartimento di Biologia Ambientale, Università di Roma "La Sapienza", Rome, Italy
| | - Fabio Sciubba
- Dipartimento di Biologia Ambientale, Università di Roma "La Sapienza", Rome, Italy.,NMR Lab: Università di Roma "La Sapienza", Rome, Italy
| | - Ilaria Serafini
- Dipartimento di Chimica, Università di Roma "La Sapienza", Rome, Italy
| | - Marco Franceschin
- Dipartimento di Chimica, Università di Roma "La Sapienza", Rome, Italy
| | - Roberta Curini
- Dipartimento di Chimica, Università di Roma "La Sapienza", Rome, Italy
| | | | | | | | - Mauro Serafini
- Dipartimento di Biologia Ambientale, Università di Roma "La Sapienza", Rome, Italy
| | - Sebastiano Foddai
- Dipartimento di Biologia Ambientale, Università di Roma "La Sapienza", Rome, Italy
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Mata-Torres G, Andrade-Cetto A, Espinoza-Hernández F. Approaches to Decrease Hyperglycemia by Targeting Impaired Hepatic Glucose Homeostasis Using Medicinal Plants. Front Pharmacol 2021; 12:809994. [PMID: 35002743 PMCID: PMC8733686 DOI: 10.3389/fphar.2021.809994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 11/30/2021] [Indexed: 11/29/2022] Open
Abstract
Liver plays a pivotal role in maintaining blood glucose levels through complex processes which involve the disposal, storage, and endogenous production of this carbohydrate. Insulin is the hormone responsible for regulating hepatic glucose production and glucose storage as glycogen, thus abnormalities in its function lead to hyperglycemia in obese or diabetic patients because of higher production rates and lower capacity to store glucose. In this context, two different but complementary therapeutic approaches can be highlighted to avoid the hyperglycemia generated by the hepatic insulin resistance: 1) enhancing insulin function by inhibiting the protein tyrosine phosphatase 1B, one of the main enzymes that disrupt the insulin signal, and 2) direct regulation of key enzymes involved in hepatic glucose production and glycogen synthesis/breakdown. It is recognized that medicinal plants are a valuable source of molecules with special properties and a wide range of scaffolds that can improve hepatic glucose metabolism. Some molecules, especially phenolic compounds and terpenoids, exhibit a powerful inhibitory capacity on protein tyrosine phosphatase 1B and decrease the expression or activity of the key enzymes involved in the gluconeogenic pathway, such as phosphoenolpyruvate carboxykinase or glucose 6-phosphatase. This review shed light on the progress made in the past 7 years in medicinal plants capable of improving hepatic glucose homeostasis through the two proposed approaches. We suggest that Coreopsis tinctoria, Lithocarpus polystachyus, and Panax ginseng can be good candidates for developing herbal medicines or phytomedicines that target inhibition of hepatic glucose output as they can modulate the activity of PTP-1B, the expression of gluconeogenic enzymes, and the glycogen content.
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Affiliation(s)
| | - Adolfo Andrade-Cetto
- Laboratorio de Etnofarmacología, Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico
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In-vivo and in-vitro evaluation of therapeutic potential of β- Carotene in diabetes. J Diabetes Metab Disord 2021; 20:1621-1630. [PMID: 34900813 DOI: 10.1007/s40200-021-00912-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 10/02/2021] [Indexed: 10/20/2022]
Abstract
The present study was performed to investigate the therapeutic potential of β- Carotene against STZ induced diabetes by using in vivo and in vitro models. MTT assay was performed to check the cytotoxic effect of β- Carotene in HepG2 liver cells which were treated with β- Carotene (10, 20 μM). The anti-diabetic activity was examined by estimating different enzymes in cell lines. Further, we validated activity by using in vitro models. Male Albino Wistar rats were divided into five groups each group contain six animals (n = 6). The diabetes was induced via intraperitoneal injection of STZ and the β- Carotene was treated with daily doses of 10 and 20 mg/kg for 14 days. After the last dose of β- Carotene, rats were sacrificed and the biochemical parameters were estimated in liver homogenate. The disease control group showed an elevation in the level of cytokine as well as ROS and β- Carotene-treated animals showed a reduction in the level of cytokine and normal content of anti-oxidant enzyme in liver tissue homogenate. We found β- Carotene had no toxic effect on HepG2 liver cells. In the case of the glucose utilization assay, it was found that glucose uptake level was significantly increased with the increasing concentrations of β-Carotene. In conclusion β- Carotene improves glucose metabolism along with oxidative status in STZ-induced diabetic rats.
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Kou YB, Yan XQ, Jing QY, Zhang SH, Liu ZZ, Wei YX, Wang YG. LIGHT (TNFSF14) inhibits glucose uptake of adipocytes by downregulating GLUT4 expression via AKT signaling pathway. Biochem Biophys Res Commun 2021; 583:106-113. [PMID: 34735871 DOI: 10.1016/j.bbrc.2021.10.061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/24/2021] [Accepted: 10/25/2021] [Indexed: 11/22/2022]
Abstract
Glucose homeostasis of adipocytes could be regulated by immune-adipose crosstalk. In order to investigate the effects of Lymphotoxin-like inducible protein that competes with glycoprotein D for herpesvirus entry on T cells (LIGHT) on glucose metabolism, we performed the present study. Our results showed that LIGHT deficiency improved glucose tolerance and enhanced glucose consumption of inguinal white adipose tissue (iWAT) under high fat diet. Consistently, Light overexpression could inhibit glucose uptake during the process of white adipogenesis. Mechanistically, LIGHT interacted with lymphotoxin-β receptor (LTβR) to attenuate AKT pathway leading to downregulation of glucose transporter-4 (GLUT4) expression, which resulted in glucose uptake inhibition. In summary, our findings revealed LIGHT-LTβR-AKT-GLUT4 axis as a regulator of glucose uptake in adipose tissue, which suggested the pivotal role of LIGHT in maintaining glucose homeostasis.
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Affiliation(s)
- Yan-Bo Kou
- Jiangsu Key Laboratory of Immunity and Metabolism, Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, China.
| | - Xiao-Qing Yan
- Laboratory of Emergency Medicine, Second Clinical Medical College, Xuzhou Medical University, Xuzhou, China
| | - Qi-Yue Jing
- Jiangsu Key Laboratory of Immunity and Metabolism, Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Sheng-Han Zhang
- Jiangsu Key Laboratory of Immunity and Metabolism, Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Zhuan-Zhuan Liu
- Jiangsu Key Laboratory of Immunity and Metabolism, Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Yan-Xia Wei
- Jiangsu Key Laboratory of Immunity and Metabolism, Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Yu-Gang Wang
- Jiangsu Key Laboratory of Immunity and Metabolism, Laboratory of Infection and Immunity, Department of Pathogenic Biology and Immunology, Xuzhou Medical University, Xuzhou, China.
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11
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Hamed YS, Abdin M, Rayan AM, Saleem Akhtar HM, Zeng X. Synergistic inhibition of isolated flavonoids from Moringa oleifera leaf on α-glucosidase activity. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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12
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Komakula SB, Tiwari AK, Singh S. A novel quantitative assay for analysis of GLUT4 translocation using high content screening. Biomed Pharmacother 2021; 133:111032. [PMID: 33378945 DOI: 10.1016/j.biopha.2020.111032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 11/11/2020] [Accepted: 11/15/2020] [Indexed: 12/23/2022] Open
Abstract
Insulin resistance is associated with obesity and can lead to several metabolic disorders including type II diabetes, nonalcoholic fatty liver disease and cardiovascular problems. Search for the small molecules which can either induce or mimic the insulin action are of great interest and can be utilized to manage insulin resistance. There are several dietary phytochemicals which can potentially have insulinomimetic action. Nevertheless, high throughput screening methods to test efficiency of small molecules to act as an insulinomimetic are not fully established. In this paper we have performed chemical screen analysis based on GLUT4 translocation using a cell line CHO-HIRC-myc-GLUT4 eGFP that expresses GLUT4-GFP in association with human Insulin receptor. We have established a high content screening-based method which can track and quantify the GLUT4 translocation from perinuclear area to the cell membrane. The assay involves measuring fluorescence intensity in a defined perinuclear area and a defined area along the cell membrane; and the results are expressed as the ratio of fluorescence intensity in the perinuclear to membrane area. The assay could collect real time data of GLUT4 translocation from thousand of cells/ sample and from many such samples in one experiment. We validated the assay using Insulin, insulin mimics/sensitizers and insulin inhibitors. The agonist or antagonists were analyzed for their ability to enhance or block the GLUT4 translocation independent of insulin. The outcome of the assay was correlated by performing glucose uptake assay using differentiated 3T3L1 cells. Using this platform we further identified several plant extracts which had the insulin mimetic action. We confirmed that these plant extracts were non-toxic to the beta cells using RIN mf5cells and 3T3L1 cells. We have identified plant extracts with the potential insulinomimetic action using novel high-content screening approach; these can be further tested for their efficiency in-vivo in pre-clinical trials.
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Affiliation(s)
- SaiSantosh Babu Komakula
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India; Department of Experimental Biology, Wrocław University of Environmental and Life Sciences, Wroclaw, Poland
| | | | - Shashi Singh
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India.
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13
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Fernandes AS, Nascimento TC, Pinheiro PN, de Rosso VV, de Menezes CR, Jacob-Lopes E, Zepka LQ. Insights on the intestinal absorption of chlorophyll series from microalgae. Food Res Int 2020; 140:110031. [PMID: 33648259 DOI: 10.1016/j.foodres.2020.110031] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 11/10/2020] [Accepted: 12/13/2020] [Indexed: 12/22/2022]
Abstract
The bioaccessibility and subsequent uptake by Caco-2 human intestinal cells of chlorophyll pigments from Scenedesmus obliquus were determined for the first time. In order to evaluate the impact of different types of the matrix on bioaccessibility of chlorophyll from microalgae, three different products were evaluated: isolated chlorophyll extract (ICE); wet ultrasonicated biomass (WUB); and whole dried biomass (WDB). The samples were submitted to in vitro digestion model according to the INFOGEST protocol, and Caco-2 cells determined the intestinal uptake. Chlorophyll pigments were determined by HPLC-PDA-MS/MS. A total of ten chlorophyll pigments (8,318.48 µg g-1) were separated in S. obliquus biomass, with chlorophyll a (3,507.76 µg g-1) and pheophytin a' (1,598.09 µg g-1) the major ones. After in vitro digestion, all tested products showed bioaccessible chlorophylls. However, the total bioaccessibility results were as follows: ICE (33.45%), WUB (2.65%), WDB (0.33%). Five compounds were bioaccessible in ICE, three in WUB, and one in WDB. The hydroxypheophytin a showed the highest bioaccessibility (212%) in ICE, while pheophytin a' in WUB (11%) and WDB (2%). As a result, bioavailability estimates of ICE using the Caco-2 cell showed hydroxypheophytin a (102.53%), followed by pheophytin a' (64.69%) as the chlorophyll pigments most abundant in intestinal cells. In summary, from a nutritional perspective, these three types of the matrix (WDB, WUB, and ICE) influence the promotion of chlorophyll bioaccessibility. In this way, the data suggest that chlorophylls bioaccessibility from ICE is greater than that in WDB and WUB. Therefore, ICE should be considered a product that provides bioavailable chlorophyll and could be the best choice, such as ingredients in the development of functional foods chlorophyll-based.
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Affiliation(s)
- Andrêssa S Fernandes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Tatiele C Nascimento
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Pricila N Pinheiro
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Veridiana V de Rosso
- Department of Biosciences, Federal University of São Paulo (UNIFESP), Rua Silva Jardim 136, Santos 11015-020, Brazil
| | - Cristiano R de Menezes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Eduardo Jacob-Lopes
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil
| | - Leila Q Zepka
- Department of Food Technology and Science, Federal University of Santa Maria (UFSM), P.O. Box 5021, Santa Maria 97105-900, Brazil.
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14
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Yu L, Shang D, Lang L, Liu Y, Yu M, Song D, Jia S, Han S, Li C, Liu J, Xu Y, Zhang X. TMF, a natural dihydroflavonoid isolated from Scutellaria javanica Jungh, stimulates anticancer activity of s180 cancer-bearing mice, induces apoptosis, inhibits invasion and migration on HepG-2 cells. JOURNAL OF ETHNOPHARMACOLOGY 2020; 263:113072. [PMID: 32738393 DOI: 10.1016/j.jep.2020.113072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/07/2020] [Accepted: 05/31/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE 5-hydroxy-7,8,2',6'-tetramethoxy flavanone (TMF) is a dihydroflavonoid extracted from Scutellaria javanica Jungh. It is a species of genus Scutellaria, and a representative southern herb and Li nationality medicine. The plant has been used as an ethnic medicine in treating cancer and the main components are dihydroflavonoids. However, the underlying mechanisms are yet to be elucidated. AIM OF THE STUDY The present study aimed at investigating the efficacy of TMF in cancer and the underlying mechanisms. MATERIALS AND METHODS The s180 cancer-bearing mice experiment in vivo was designed to study the tumor growth inhibition of TMF. Also, we investigated the latent mechanism of TMF induced apoptosis and the inhibitory action of TMF on the metastasis and proliferation in HepG-2 cells. The in vitro experimental groups were treated with TMF or hydroxycamptothecine (HCPT) for 24 h. Apoptosis was detected by flow cytometry. Caspase-3 activity was detected by ELISA. The expressions of PCNA, Bcl-2, Bax, p53, E-Cadherin, MMP-9, MMP-2, STAT3, p-STAT3, JAK2, p-JAK2, AKT, p-AKT, ERK1/2 and p-ERK1/2 were examined by Western blot. RESULTS After oral administration of TMF in s180 cancer-bearing mice, tumor growth in vivo was suppressed significantly. The MTT assay result and the reduction of PCAN proved that TMF could inhibit HepG-2 cells proliferation. TMF also caused dose-dependent apoptosis on HepG-2 cells. The experimental results showed that the expression of Bcl-2 was reduced, and the expressions of caspase-3, Bax and p53 were increased. Therefore, we speculated that TMF-induced apoptosis might be achieved by regulating the p53-Bcl-2/Bax-caspase-3 pathways. Transwell cell migration and invasion assay showed that treatment with TMF inhibited the invasion and migration in HepG-2 cells. The expressions of MMP-9 and MMP-2 were decreased while that of E-cadherin was enhanced significantly by TMF. Additionally, the expressions of p-JAK2, p-STAT3, p-AKT and p-ERK1/2 were decreased, but those of JAK2, STAT3, AKT and ERK1/2 remained unchanged. Thus, it is indicated that TMF induced apoptosis and inhibited proliferation and metastasis on HepG-2 cells via JAK2/STAT3, MAPK/ERK and PI3K/AKT pathways. CONCLUSION The present results demonstrated that TMF could stimulate anticancer activity of s180 cancer-bearing mice, induce apoptosis, and inhibit invasion and migration on HepG-2 cells. Our findings displayed a systematic insight into the mechanisms underlying anticancer action of TMF, and provided a better understanding of its use for cancer.
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Affiliation(s)
- Lei Yu
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Dongyu Shang
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China; Engineering Research Center of Natural Anticancer Drugs, Ministry of Education, Harbin, 150076, PR China.
| | - Lang Lang
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Yingjie Liu
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Miao Yu
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Dongxue Song
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Shaohua Jia
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Shuang Han
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China; Engineering Research Center of Natural Anticancer Drugs, Ministry of Education, Harbin, 150076, PR China.
| | - Chuandi Li
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China; Engineering Research Center of Natural Anticancer Drugs, Ministry of Education, Harbin, 150076, PR China.
| | - Jun Liu
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Ying Xu
- College of Pharmacy, Engineering Research Center for Medicine, Harbin University of Commerce, Harbin, 150076, PR China.
| | - Xiaopo Zhang
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical Herbs, School of Pharmacy, Hainan Medical University, Haikou, 57199, PR China.
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Wang X, Feng A, Yuan P, Fu Y, Bai Z, Zhou N, Zheng X. The total flavonoids from Selaginella tamariscina (beauv.) Spring improve glucose and lipid metabolism in db/db mice. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2020; 23:1286-1292. [PMID: 33149860 PMCID: PMC7585538 DOI: 10.22038/ijbms.2020.40532.9594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Objectives This study aimed to investigate the glucose and lipid metabolism improving effect of the total flavonoids from Selaginella tamariscina (Beauv.) Spring (TFST) on db/db mice, and to study its mechanism of action. Materials and Methods The db/db mice were divided into 5 groups: the normal group (NC), the diabetic group (DM), the gliclazide group (GZ), the DM+TFST (110 mg/kg), and the DM+TFST (220 mg/kg). The body weight, blood glucose, INS, GC, TC, TG, LDL, and HDL were detected. HE staining was used to observe the liver and pancreas. Urine was tested by UPLC-QTOF-MS to study the metabolic differences of each group, coupled with SIMCA-P13.0 for PCA and OPLS-DA analysis, to identify potential biomarkers, find the metabolic pathway. Western blot was used to examine liver tissue of mice for studying effect of TFST on the PPAR-γ/PI3K/GLU4 pathway. Results TFST can reduce the weight and levels of TC, TG, and LDL-C, increase the level of GC in blood, and reduce the fat accumulation and inflammation in the liver, and repair the islet cell. 13 biomarkers were identified, they are mainly involved in amino acid metabolism, and purine and pyrimidine metabolism. The results of Western blot show TFST can improve the utilization rate of GLU4 by regulating PPAR-γ and PI3K expression in the liver of db/db mice. Conclusion TFST can improve glucose and lipid metabolism of DM, which relates to regulation of the PPAR-γ/PI3K/GLU4 signaling pathway, and affect the amino acid metabolism, purine, and pyrimidine metabolism.
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Affiliation(s)
- Xiaolan Wang
- Henan University of Chinese Medicine, Zhengzhou, China.,The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
| | - Aozi Feng
- First Affiliated Hospital, Jinan University, Guangzhou, China
| | - Peipei Yuan
- Henan University of Chinese Medicine, Zhengzhou, China
| | - Yang Fu
- Henan University of Chinese Medicine, Zhengzhou, China
| | - Zhiyao Bai
- Henan University of Chinese Medicine, Zhengzhou, China
| | - Ning Zhou
- Henan University of Chinese Medicine, Zhengzhou, China
| | - Xiaoke Zheng
- Henan University of Chinese Medicine, Zhengzhou, China.,The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, China
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16
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Xu L, Chen Y, Chen Z, Gao X, Wang C, Panichayupakaranant P, Chen H. Ultrafiltration isolation, physicochemical characterization, and antidiabetic activities analysis of polysaccharides from green tea, oolong tea, and black tea. J Food Sci 2020; 85:4025-4032. [PMID: 33037621 DOI: 10.1111/1750-3841.15485] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 09/05/2020] [Accepted: 09/10/2020] [Indexed: 02/05/2023]
Affiliation(s)
- Leilei Xu
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China
| | - Yue Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China
| | - Zhongqin Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China
| | - Xudong Gao
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China
| | - Chunli Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China
| | - Pharkphoom Panichayupakaranant
- Phytomedicine and Pharmaceutical Biotechnology Excellence Center, Faculty of Pharmaceutical Sciences Prince of Songkla University Hat‐Yai Songkhla 90112 Thailand
| | - Haixia Chen
- Tianjin Key Laboratory for Modern Drug Delivery & High‐Efficiency, School of Pharmaceutical Science and Technology Tianjin University Tianjin 300072 P. R. China
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Rivera Diaz PA, Gómez Camargo DE, Ondo-Méndez A, Gómez-Alegría CJ. A colorimetric bioassay for quantitation of both basal and insulin-induced glucose consumption in 3T3-L1 adipose cells. Heliyon 2020; 6:e03422. [PMID: 32140580 PMCID: PMC7049645 DOI: 10.1016/j.heliyon.2020.e03422] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 01/24/2020] [Accepted: 02/12/2020] [Indexed: 11/21/2022] Open
Abstract
Introduction The quantitation of glucose consumption in animal cell cultures is mainly based on the use of radiolabeled or fluorescent analogues, resulting in expensive and tedious procedures, requiring special equipment and, sometimes, with potential health and environmental risks. Objectives The objective of this work was to evaluate the application of a blood plasma colorimetric assay to quantify glucose consumption in in vitro cultures of adipose cells. Methods We worked with 3T3-L1 adipose cells differentiated by 7–8 days, which were exposed to different initial glucose concentrations (5.5, 2.8 and 1.4 mM) for variable times, either in the absence or the presence of 100 nM insulin. Using a commercial colorimetric glucose assay, extracellular glucose was determined, and glucose uptake was calculated as the difference between the initial and final glucose concentration. Results The colorimetric assay allowed us to quantify glucose uptake in our cell model, observing a linear response over time (r2≥0.9303) to the different glucose concentrations, both in the basal and insulin-induced condition. The insulin-stimulated glucose consumption was higher than basal consumption at all glucose concentrations evaluated, but significant differences were observed at 120-, 360- and 480-min in glucose 5.5 mM (p ≤ 0.01, n = 5), and 240 min in glucose 1.4 mM (p ≤ 0.01, n = 5). A Vmax of 4.1 and 5.9 nmol/ml/min (basal and insulin-induced, respectively) and a Km of 1.1 mM (same in basal vs insulin-stimulated) were calculated. The bioassay was also useful in a pharmacological context: in glucose 1.4 mM, glucose consumption showed an effect that depended on insulin concentration, with a calculated EC50 of 18.4 ± 1.1 nM. Conclusions A simple and low-cost bioassay is proposed to quantify glucose consumption in 3T3-L1 adipose cells.
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Affiliation(s)
- Paola A. Rivera Diaz
- Universidad Nacional de Colombia, Sede Bogotá, Facultad de Ciencias, Departamento de Farmacia, Grupo de investigación UNIMOL, Av. Carrera 30 #45-03, Bogotá, Código Postal 111321, Colombia
| | - Doris E. Gómez Camargo
- Universidad de Cartagena, Facultad de Medicina, Doctorado en Medicina Tropical del SUE Caribe, Grupo UNIMOL, Cartagena, Colombia
| | - Alejandro Ondo-Méndez
- Universidad del Rosario, Escuela de Medicina y Ciencias de la Salud, Grupo de Investigación Clínica, Colombia
| | - Claudio J. Gómez-Alegría
- Universidad Nacional de Colombia, Sede Bogotá, Facultad de Ciencias, Departamento de Farmacia, Grupo de investigación UNIMOL, Av. Carrera 30 #45-03, Bogotá, Código Postal 111321, Colombia
- Corresponding author.
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18
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Wang Y, Lian H, Wang X, Zheng T, Yu X, Chen R, Huang Z, Lv Y, Zhao A, Gao J. Characterization of the Active Components of the Multimerized sTNFRIIAdiponectin Fusion Protein Showing Both TNFα-Antagonizing and Glucose Uptake-Promoting Activities. Endocr Metab Immune Disord Drug Targets 2020; 20:1081-1089. [PMID: 31965947 DOI: 10.2174/1871530320666200121100449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/11/2019] [Accepted: 11/13/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The sTNFRII-adiponectin fusion protein previously showed strong TNFα antagonistic activity. However, the fusion protein exists as mixture of different multimers. The aim of the present study was to characterize its active components. METHODS In this study, the fusion protein was isolated and purified by Ni-NTA affinity and gel exclusion chromatography, and further identified by Coomassie staining and western blotting. The TNFα antagonistic and glucose uptake-promoting activities were determined in vitro. The glucose detection kit and 2- NBDG (2-deoxy-2-[(7-nitro-2,1,3-benzoxadiazol-4-yl)amino]-D-glucose) were used to measure their effects on glucose metabolism (including glucose consumption and glucose uptake in HepG2 and H9C2 cells). The effect of the fusion protein on glucose uptake was also examined in free fatty acid (FFA)- induced insulin resistance cell model. RESULTS The sTNFRII-adiponectin fusion protein was found to exist in three forms: 250 kDa (hexamer), 130 kDa (trimer), and 60 kDa (monomer), with the final purity of 90.2%, 60.1%, and 81.6%, respectively. The fusion protein could effectively antagonize the killing effect of TNFα in L929 cells, and the multimer was found to be superior to the monomer. In addition, the fusion protein could increase glucose consumption without impacting the number of cells (HepG2, H9C2 cells) in a dosedependent manner. Mechanistically, glucose uptake was found to be enhanced by the translocation of GLUT4. However, it could not improve glucose uptake in the cell model of insulin resistance. CONCLUSION In summary, the active components of the fusion protein are hexamers and trimers. The hexamer and trimer of sTNFRII-adiponectin fusion protein had both TNFα-antagonizing and glucose uptake-promoting activities, although neither of them could improve glucose uptake in the cell model of insulin resistance.
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Affiliation(s)
- Yao Wang
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Hui Lian
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xitong Wang
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Tianyu Zheng
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Xiaoxiao Yu
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Ruzhang Chen
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zhiyong Huang
- Department of Thoracic Surgery Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yinxiang Lv
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
| | - Ai Zhao
- Department of Hematology Shunde Hospital, Southern Medical University, Foshan, China; 4Zhejiang Qixin Biotech, Wenzhou, China
| | - Jimin Gao
- Zhejiang Provincial Key Laboratory of Technology & Application of Model Organisms, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, China
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Casado-Díaz A, Dorado G, Quesada-Gómez JM. Influence of olive oil and its components on mesenchymal stem cell biology. World J Stem Cells 2019; 11:1045-1064. [PMID: 31875868 PMCID: PMC6904865 DOI: 10.4252/wjsc.v11.i12.1045] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/29/2019] [Accepted: 11/05/2019] [Indexed: 02/06/2023] Open
Abstract
Extra virgin olive oil is characterized by its high content of unsaturated fatty acid residues in triglycerides, mainly oleic acid, and the presence of bioactive and antioxidant compounds. Its consumption is associated with lower risk of suffering chronic diseases and unwanted processes linked to aging, due to the antioxidant capacity and capability of its components to modulate cellular signaling pathways. Consumption of olive oil can alter the physiology of mesenchymal stem cells (MSCs). This may explain part of the healthy effects of olive oil consumption, such as prevention of unwanted aging processes. To date, there are no specific studies on the action of olive oil on MSCs, but effects of many components of such food on cell viability and differentiation have been evaluated. The objective of this article is to review existing literature on how different compounds of extra virgin olive oil, including residues of fatty acids, vitamins, squalene, triterpenes, pigments and phenols, affect MSC maintenance and differentiation, in order to provide a better understanding of the healthy effects of this food. Interestingly, most studies have shown a positive effect of these compounds on MSCs. The collective findings support the hypothesis that at least part of the beneficial effects of extra virgin olive oil consumption on health may be mediated by its effects on MSCs.
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Affiliation(s)
- Antonio Casado-Díaz
- CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofía, Córdoba 14004, Spain
| | - Gabriel Dorado
- Departement Bioquímica y Biología Molecular, Campus Rabanales C6-1-E17, Campus de Excelencia Internacional Agroalimentario (ceiA3), Universidad de Córdoba, CIBERFES, Córdoba 14071, Spain
| | - José Manuel Quesada-Gómez
- Unidad de Gestión Clínica de Endocrinología y Nutrición, CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), Hospital Universitario Reina Sofía, Córdoba 14004, Spain
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20
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Ibrahim MA, Serem JC, Bester MJ, Neitz AW, Gaspar ARM. New Antidiabetic Targets of α-Glucosidase Inhibitory Peptides, SVPA, SEPA, STYV and STY: Inhibitory Effects on Dipeptidyl Peptidase-IV and Lipid Accumulation in 3T3-L1 Differentiated Adipocytes with Scavenging Activities Against Methylglyoxal and Reactive Oxygen Species. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-019-09993-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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21
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Freitas S, Silva NG, Sousa ML, Ribeiro T, Rosa F, Leão PN, Vasconcelos V, Reis MA, Urbatzka R. Chlorophyll Derivatives from Marine Cyanobacteria with Lipid-Reducing Activities. Mar Drugs 2019; 17:md17040229. [PMID: 30999602 PMCID: PMC6520785 DOI: 10.3390/md17040229] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/11/2019] [Accepted: 04/14/2019] [Indexed: 12/12/2022] Open
Abstract
Marine organisms, particularly cyanobacteria, are important resources for the production of bioactive secondary metabolites for the treatment of human diseases. In this study, a bioassay-guided approach was used to discover metabolites with lipid-reducing activity. Two chlorophyll derivatives were successfully isolated, the previously described 132-hydroxy-pheophytin a (1) and the new compound 132-hydroxy-pheofarnesin a (2). The structure elucidation of the new compound 2 was established based on one- and two-dimensional (1D and 2D) NMR spectroscopy and mass spectrometry. Compounds 1 and 2 showed significant neutral lipid-reducing activity in the zebrafish Nile red fat metabolism assay after 48 h of exposure with a half maximal effective concentration (EC50) of 8.9 ± 0.4 µM for 1 and 15.5 ± 1.3 µM for 2. Both compounds additionally reduced neutral lipid accumulation in 3T3-L1 multicellular spheroids of murine preadipocytes. Molecular profiling of mRNA expression of some target genes was evaluated for the higher potent compound 1, which indicated altered peroxisome proliferator activated receptor gamma (PPARγ) mRNA expression. Lipolysis was not affected. Different food materials (Spirulina, Chlorella, spinach, and cabbage) were evaluated for the presence of 1, and the cyanobacterium Spirulina, with GRAS (generally regarded as safe) status for human consumption, contained high amounts of 1. In summary, known and novel chlorophyll derivatives were discovered from marine cyanobacteria with relevant lipid-reducing activities, which in the future may be developed into nutraceuticals.
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Affiliation(s)
- Sara Freitas
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
- FCUP, Faculty of Science, Department of Biology, University of Porto, Rua do Campo, Alegre, 4169-007 Porto, Portugal.
| | - Natália Gonçalves Silva
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Maria Lígia Sousa
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Tiago Ribeiro
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Filipa Rosa
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Pedro N Leão
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Vitor Vasconcelos
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
- FCUP, Faculty of Science, Department of Biology, University of Porto, Rua do Campo, Alegre, 4169-007 Porto, Portugal.
| | - Mariana Alves Reis
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Ralph Urbatzka
- Interdisciplinary Center of Marine and Environmental Research (CIIMAR/CIMAR), University of Porto, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
- FCUP, Faculty of Science, Department of Biology, University of Porto, Rua do Campo, Alegre, 4169-007 Porto, Portugal.
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Su L, Wu R, Chen X, Hou W, Ruan BH. FITC-labeled d-glucose analog is suitable as a probe for detecting insulin-dependent glucose uptake. Bioorg Med Chem Lett 2018; 28:3560-3563. [PMID: 30293953 DOI: 10.1016/j.bmcl.2018.09.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 09/19/2018] [Indexed: 11/28/2022]
Abstract
The detection of the insulin-dependent glucose uptake is a vital part in the research of diabetes. To establish a sensitive assay for measuring glucose uptake in living cells, we synthesized a FITC linked d-glucosamine 2 as a probe. 2 was obtained by the reaction of commercially available d-glucosamine hydrochloride and FITC and was determined as a single anomeric form by 1H NMR and 13C NMR. 2 exhibited good water solubility and stability. An uptake assay in HepG2 cells with or without insulin demonstrated that FITC showed strong cellular uptake, whereas uptake of 2 is much less but is insulin dependent. This suggests that 2 is specifically transported into cells through a receptor that is regulated by insulin and has potential application in screening of compounds or genes that regulate the insulin-dependence in cell-based assays.
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Affiliation(s)
- Lin Su
- College of Pharmaceutical Science, Institute of Drug Development & Chemical Biology (IDD & CB), Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Rui Wu
- College of Pharmaceutical Science, Institute of Drug Development & Chemical Biology (IDD & CB), Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xinrou Chen
- College of Pharmaceutical Science, Institute of Drug Development & Chemical Biology (IDD & CB), Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Wei Hou
- College of Pharmaceutical Science, Institute of Drug Development & Chemical Biology (IDD & CB), Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Benfang Helen Ruan
- College of Pharmaceutical Science, Institute of Drug Development & Chemical Biology (IDD & CB), Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China.
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Causes and solutions to “globesity”: The new fa(s)t alarming global epidemic. Food Chem Toxicol 2018; 121:173-193. [DOI: 10.1016/j.fct.2018.08.071] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/10/2018] [Accepted: 08/29/2018] [Indexed: 12/12/2022]
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Csepregi R, Temesfői V, Sali N, Poór M, W Needs P, A Kroon P, Kőszegi T. A One-Step Extraction and Luminescence Assay for Quantifying Glucose and ATP Levels in Cultured HepG2 Cells. Int J Mol Sci 2018; 19:E2670. [PMID: 30205572 PMCID: PMC6163413 DOI: 10.3390/ijms19092670] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 08/31/2018] [Accepted: 08/31/2018] [Indexed: 12/25/2022] Open
Abstract
A fluorescence-based enzymatic microplate intracellular glucose assay was designed and fully validated. The method was tested in a hepatocellular cancer cell line (HepG2). Our novel one-step extraction reagent gave stable cell lysates for glucose, adenosine triphosphate (ATP), and total protein determination from the same sample. Limit of detection for glucose was 0.13 µM (26 pmol/well), which is superior to commercially available glucose assays. Both intra- and interday assay imprecision in HepG2 cultures were less than 12% coefficient of variance (CV). In cell lysates spiked with glucose, recovery at two levels varied between 83.70% and 91.81%, and both linearity and stability were acceptable. HepG2 cells treated with agents affecting glucose uptake/metabolism (phloretin, quercetin, quercetin-3'-sulfate, NaF, 3-bromopyruvate, NaN₃, oligomycin A, ochratoxin A, cytochalasin B, and anti-GLUT1 antibody) showed dose-dependent changes in glucose and ATP levels without total protein (cell) loss. Finally, we performed flow cytometric glucose uptake measurement in the treated cells using 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino]-2-deoxyglucose fluorescent glucose analog. Glucose uptake did not always mirror the intracellular glucose levels, which most likely reflects the differences between the two methodologies. However, interpreting data obtained by both methods and taking ATP/protein levels at the same time, one can get information on the mode of action of the compounds.
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Affiliation(s)
- Rita Csepregi
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság u. 13, H-7624 Pécs, Hungary.
- János Szentágothai Research Center, Ifjúság u. 20, H-7624 Pécs, Hungary.
| | - Viktória Temesfői
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság u. 13, H-7624 Pécs, Hungary.
- János Szentágothai Research Center, Ifjúság u. 20, H-7624 Pécs, Hungary.
| | - Nikolett Sali
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság u. 13, H-7624 Pécs, Hungary.
| | - Miklós Poór
- János Szentágothai Research Center, Ifjúság u. 20, H-7624 Pécs, Hungary.
- Department of Pharmacology, Faculty of Pharmacy, University of Pécs, Szigeti u. 12, H-7624 Pécs, Hungary.
| | - Paul W Needs
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, UK.
| | - Paul A Kroon
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, UK.
| | - Tamás Kőszegi
- Department of Laboratory Medicine, Medical School, University of Pécs, Ifjúság u. 13, H-7624 Pécs, Hungary.
- János Szentágothai Research Center, Ifjúság u. 20, H-7624 Pécs, Hungary.
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