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Bottone S, Joliot O, Cakil ZV, El Hajji L, Rakotoarison LM, Boncompain G, Perez F, Gautier A. A fluorogenic chemically induced dimerization technology for controlling, imaging and sensing protein proximity. Nat Methods 2023; 20:1553-1562. [PMID: 37640938 DOI: 10.1038/s41592-023-01988-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 07/28/2023] [Indexed: 08/31/2023]
Abstract
Molecular tools enabling the control and observation of the proximity of proteins are essential for studying the functional role of physical distance between two proteins. Here we present CATCHFIRE (chemically assisted tethering of chimera by fluorogenic-induced recognition), a chemically induced proximity technology with intrinsic fluorescence imaging and sensing capabilities. CATCHFIRE relies on genetic fusion to small dimerizing domains that interact upon addition of fluorogenic inducers of proximity that fluoresce upon formation of the ternary assembly, allowing real-time monitoring of the chemically induced proximity. CATCHFIRE is rapid and fully reversible and allows the control and tracking of protein localization, protein trafficking, organelle transport and cellular processes, opening new avenues for studying or controlling biological processes with high spatiotemporal resolution. Its fluorogenic nature allows the design of a new class of biosensors for the study of processes such as signal transduction and apoptosis.
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Affiliation(s)
- Sara Bottone
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, Paris, France
| | | | - Zeyneb Vildan Cakil
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, Paris, France
| | - Lina El Hajji
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, Paris, France
| | - Louise-Marie Rakotoarison
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, Paris, France
| | | | | | - Arnaud Gautier
- Sorbonne Université, École Normale Supérieure, Université PSL, CNRS, Laboratoire des Biomolécules, Paris, France.
- Institut Universitaire de France, Paris, France.
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Hocq R, Bottone S, Gautier A, Pflügl S. A fluorescent reporter system for anaerobic thermophiles. Front Bioeng Biotechnol 2023; 11:1226889. [PMID: 37476481 PMCID: PMC10355840 DOI: 10.3389/fbioe.2023.1226889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 06/23/2023] [Indexed: 07/22/2023] Open
Abstract
Owing to their inherent capacity to make invisible biological processes visible and quantifiable, fluorescent reporter systems have numerous applications in biotechnology. For classical fluorescent protein systems (i.e., GFP and derivatives), chromophore maturation is O2-dependent, restricting their applications to aerobic organisms. In this work, we pioneered the use of the oxygen-independent system FAST (Fluorescence Activating and absorption Shifting tag) in the thermophilic anaerobe Thermoanaerobacter kivui. We developed a modular cloning system that was used to easily clone a library of FAST expression cassettes in an E. coli-Thermoanaerobacter shuttle plasmid. FAST-mediated fluorescence was then assessed in vivo in T. kivui, and we observed bright green and red fluorescence for cells grown at 55°C. Next, we took advantage of this functional reporter system to characterize a set of homologous and heterologous promoters by quantifying gene expression, expanding the T. kivui genetic toolbox. Low fluorescence at 66°C (Topt for T. kivui) was subsequently investigated at the single-cell level using flow cytometry and attributed to plasmid instability at higher temperatures. Adaptive laboratory evolution circumvented this issue and drastically enhanced fluorescence at 66°C. Whole plasmid sequencing revealed the evolved strain carried functional plasmids truncated at the Gram-positive origin of replication, that could however not be linked to the increased fluorescence displayed by the evolved strain. Collectively, our work demonstrates the applicability of the FAST fluorescent reporter systems to T. kivui, paving the way for further applications in thermophilic anaerobes.
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Affiliation(s)
- Rémi Hocq
- Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, Vienna, Austria
- Christian Doppler Laboratory for Optimized Expression of Carbohydrate-Active Enzymes, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, Vienna, Austria
| | - Sara Bottone
- Laboratoire des Biomolécules (LBM), Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, École Normale Supérieure, Université PSL, Paris, France
- Institut Universitaire de France, Paris, France
| | - Arnaud Gautier
- Laboratoire des Biomolécules (LBM), Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, École Normale Supérieure, Université PSL, Paris, France
- Institut Universitaire de France, Paris, France
| | - Stefan Pflügl
- Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, Vienna, Austria
- Christian Doppler Laboratory for Optimized Expression of Carbohydrate-Active Enzymes, Institute of Chemical, Environmental and Bioscience Engineering, Technische Universität Wien, Vienna, Austria
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Manoharan GB, Laurini C, Bottone S, Ben Fredj N, Abankwa DK. K-Ras Binds Calmodulin-Related Centrin1 with Potential Implications for K-Ras Driven Cancer Cell Stemness. Cancers (Basel) 2023; 15:3087. [PMID: 37370697 DOI: 10.3390/cancers15123087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
Recent data suggest that K-Ras4B (hereafter K-Ras) can drive cancer cell stemness via calmodulin (CaM)-dependent, non-canonical Wnt-signalling. Here we examined whether another Ca2+-binding protein, the CaM-related centrin1, binds to K-Ras and could mediate some K-Ras functions that were previously ascribed to CaM. While CaM and centrin1 appear to distinguish between peptides that were derived from their classical targets, they both bind to K-Ras in cells. Cellular BRET- and immunoprecipitation data suggest that CaM engages more with K-Ras than centrin1 and that the interaction with the C-terminal membrane anchor of K-Ras is sufficient for this. Surprisingly, binding of neither K-Ras nor its membrane anchor alone to CaM or centrin1 is sensitive to inhibition of prenylation. In support of an involvement of the G-domain of K-Ras in cellular complexes with these Ca2+-binding proteins, we find that oncogenic K-RasG12V displays increased engagement with both CaM and centrin1. This is abrogated by addition of the D38A effector-site mutation, suggesting that K-RasG12V is held together with CaM or centrin1 in complexes with effectors. When treated with CaM inhibitors, the BRET-interaction of K-RasG12V with centrin1 was also disrupted in the low micromolar range, comparable to that with CaM. While CaM predominates in regulating functional membrane anchorage of K-Ras, it has a very similar co-distribution with centrin1 on mitotic organelles. Given these results, a significant overlap of the CaM- and centrin1-dependent functions of K-Ras is suggested.
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Affiliation(s)
- Ganesh Babu Manoharan
- Cancer Cell Biology and Drug Discovery Group, Department of Life Sciences and Medicine, University of Luxembourg, L-4362 Esch-sur-Alzette, Luxembourg
| | - Christina Laurini
- Cancer Cell Biology and Drug Discovery Group, Department of Life Sciences and Medicine, University of Luxembourg, L-4362 Esch-sur-Alzette, Luxembourg
| | - Sara Bottone
- Cancer Cell Biology and Drug Discovery Group, Department of Life Sciences and Medicine, University of Luxembourg, L-4362 Esch-sur-Alzette, Luxembourg
| | - Nesrine Ben Fredj
- Cancer Cell Biology and Drug Discovery Group, Department of Life Sciences and Medicine, University of Luxembourg, L-4362 Esch-sur-Alzette, Luxembourg
| | - Daniel Kwaku Abankwa
- Cancer Cell Biology and Drug Discovery Group, Department of Life Sciences and Medicine, University of Luxembourg, L-4362 Esch-sur-Alzette, Luxembourg
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Sommella E, Badolati N, Riccio G, Salviati E, Bottone S, Dentice M, Campiglia P, Tenore GC, Stornaiuolo M, Novellino E. A Boost in Mitochondrial Activity Underpins the Cholesterol-Lowering Effect of Annurca Apple Polyphenols on Hepatic Cells. Nutrients 2019; 11:E163. [PMID: 30646510 PMCID: PMC6356966 DOI: 10.3390/nu11010163] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 12/21/2018] [Accepted: 01/11/2019] [Indexed: 12/18/2022] Open
Abstract
Reduction in cholesterol blood levels represents one of the therapeutic goals to achieve in order to reduce the occurrence of cardiovascular diseases. Commonly, this goal is attempted by promoting healthy lifestyle behaviors and low-fat diets. Recently, several nutraceuticals have been shown to possess cholesterol-lowering properties and are becoming common over the counter products. Among others, apple polyphenols efficiently lower total cholesterol levels in humans and impact overall lipid metabolism. Malus Pumila Miller cv Annurca is an apple native to Southern Italy presenting one of the highest content of procyanidin B2, a dimeric procyanidin. Tested in clinical trials, the oral consumption of an Annurca polyphenolic extract (AAE) exerted a cholesterol-lowering effect similar to the statins Atorvastatin and Simvastatin. Despite AAE activity, the analysis of the molecular mechanism behind its cholesterol-lowering effect is unclear. Using isotope labeling and high-resolution mass spectrometry approaches we here performed a metabolic profiling of in vitro cultured human hepatocytes treated with AAE to reveal its mechanism of action. The results show that AAE acts differently than statins. The extract reprograms hepatic cell metabolism and promotes mitochondrial respiration, lipolysis and fatty acid β-oxidation. Citrate and acetyl-CoA, both necessary for the production of cholesterol, are diverted to the Krebs Cycle by AAE, that, ultimately, lowers cholesterogenesis and fatty acid synthesis.
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Affiliation(s)
- Eduardo Sommella
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy.
| | - Nadia Badolati
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Gennaro Riccio
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Emanuela Salviati
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy.
- PhD Program in Drug Discovery and Development, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy.
| | - Sara Bottone
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Monica Dentice
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80149 Naples, Italy.
| | - Pietro Campiglia
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, SA, Italy.
| | - Gian Carlo Tenore
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Mariano Stornaiuolo
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Ettore Novellino
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
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Riccio G, Sommella E, Badolati N, Salviati E, Bottone S, Campiglia P, Dentice M, Tenore GC, Stornaiuolo M, Novellino E. Annurca Apple Polyphenols Protect Murine Hair Follicles from Taxane Induced Dystrophy and Hijacks Polyunsaturated Fatty Acid Metabolism toward β-Oxidation. Nutrients 2018; 10:nu10111808. [PMID: 30463345 PMCID: PMC6267362 DOI: 10.3390/nu10111808] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 10/31/2018] [Accepted: 11/14/2018] [Indexed: 11/16/2022] Open
Abstract
Chemotherapy-induced alopecia (CIA) is a common side effect of conventional chemotherapy and represents a major problem in clinical oncology. Even months after the end of chemotherapy, many cancer patients complain of hair loss, a condition that is psychologically difficult to manage. CIA disturbs social and sexual interactions and causes anxiety and depression. Synthetic drugs protecting from CIA and endowed with hair growth stimulatory properties are prescribed with caution by oncologists. Hormones, growth factors, morphogens could unwontedly protect tumour cells or induce cancer cell proliferation and are thus considered incompatible with many chemotherapy regimens. Nutraceuticals, on the contrary, have been shown to be safe and effective treatment options for hair loss. We here show that polyphenols from Malus Pumila Miller cv Annurca are endowed with hair growth promoting activity and can be considered a safe alternative to avoid CIA. In vitro, Annurca Apple Polyphenolic Extract (AAE) protects murine Hair Follicles (HF) from taxanes induced dystrophy. Moreover, in virtue of its mechanism of action, AAE is herein proven to be compatible with chemotherapy regimens. AAE forces HFs to produce ATP using mitochondrial β-oxidation, reducing Pentose Phosphate Pathway (PPP) rate and nucleotides production. As consequence, DNA replication and mitosis are not stimulated, while a pool of free amino acids usually involved in catabolic reactions are spared for keratin production. Moreover, measuring the effect exerted on Poly Unsaturated Fatty Acid (PUFA) metabolism, we prove that AAE promotes hair-growth by increasing the intracellular levels of Prostaglandins F2α (PGF2α) and by hijacking PUFA catabolites toward β-oxidation.
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Affiliation(s)
- Gennaro Riccio
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Eduardo Sommella
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
| | - Nadia Badolati
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Emanuela Salviati
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
- PhD Program in Drug Discovery and Development, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
| | - Sara Bottone
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Pietro Campiglia
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
| | - Monica Dentice
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80149 Naples, Italy.
| | - Gian Carlo Tenore
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Mariano Stornaiuolo
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Ettore Novellino
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
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Badolati N, Sommella E, Riccio G, Salviati E, Heintz D, Bottone S, Di Cicco E, Dentice M, Tenore G, Campiglia P, Stornaiuolo M, Novellino E. Annurca Apple Polyphenols Ignite Keratin Production in Hair Follicles by Inhibiting the Pentose Phosphate Pathway and Amino Acid Oxidation. Nutrients 2018; 10:nu10101406. [PMID: 30279339 PMCID: PMC6213762 DOI: 10.3390/nu10101406] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 09/25/2018] [Accepted: 09/26/2018] [Indexed: 12/17/2022] Open
Abstract
Patterned hair loss (PHL) affects around 50% of the adult population worldwide. The negative impact that this condition exerts on people’s life quality has boosted the appearance of over-the-counter products endowed with hair-promoting activity. Nutraceuticals enriched in polyphenols have been recently shown to promote hair growth and counteract PHL. Malus pumila Miller cv. Annurca is an apple native to Southern Italy presenting one of the highest contents of Procyanidin B2. We have recently shown that oral consumption of Annurca polyphenolic extracts (AAE) stimulates hair growth, hair number, hair weight and keratin content in healthy human subjects. Despite its activity, the analysis of the molecular mechanism behind its hair promoting effect is still partially unclear. In this work we performed an unprecedented metabolite analysis of hair follicles (HFs) in mice topically treated with AAE. The metabolomic profile, based on a high-resolution mass spectrometry approach, revealed that AAE re-programs murine HF metabolism. AAE acts by inhibiting several NADPH dependent reactions. Glutaminolysis, pentose phosphate pathway, glutathione, citrulline and nucleotide synthesis are all halted in vivo by the treatment of HFs with AAE. On the contrary, mitochondrial respiration, β-oxidation and keratin production are stimulated by the treatment with AAE. The metabolic shift induced by AAE spares amino acids from being oxidized, ultimately keeping them available for keratin biosynthesis.
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Affiliation(s)
- Nadia Badolati
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Eduardo Sommella
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
| | - Gennaro Riccio
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Emanuela Salviati
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
- PhD Program in Drug Discovery and Development, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
| | - Dimitri Heintz
- Plant Imaging and Mass Spectrometry, Institut de Biologie Moleculaire des Plantes, CNRS, Universite de Strasbourg, 67000 Strasbourg, France.
| | - Sara Bottone
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Emery Di Cicco
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80149 Naples, Italy.
| | - Monica Dentice
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Via Pansini 5, 80149 Naples, Italy.
| | - Giancarlo Tenore
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Pietro Campiglia
- Department of Pharmacy, School of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, I-84084 Fisciano, Italy.
| | - Mariano Stornaiuolo
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
| | - Ettore Novellino
- Department of Pharmacy, University of Naples Federico II. Via Montesano 49, 80149 Naples, Italy.
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Riccio G, Bottone S, La Regina G, Badolati N, Passacantilli S, Rossi GB, Accardo A, Dentice M, Silvestri R, Novellino E, Stornaiuolo M. A Negative Allosteric Modulator of WNT Receptor Frizzled 4 Switches into an Allosteric Agonist. Biochemistry 2018; 57:839-851. [DOI: 10.1021/acs.biochem.7b01087] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Gennaro Riccio
- Department
of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Sara Bottone
- Department
of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Giuseppe La Regina
- Istituto
Pasteur-Fondazione Cenci Bolognetti, Dipartimento di Chimica e Tecnologie
del Farmaco, Sapienza University of Rome, Rome, Italy
| | - Nadia Badolati
- Department
of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Sara Passacantilli
- Istituto
Pasteur-Fondazione Cenci Bolognetti, Dipartimento di Chimica e Tecnologie
del Farmaco, Sapienza University of Rome, Rome, Italy
| | - Giovanni Battista Rossi
- Gastroenterology
and gastrointestinal endoscopy unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
| | - Antonella Accardo
- Department
of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Monica Dentice
- Department
of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Romano Silvestri
- Istituto
Pasteur-Fondazione Cenci Bolognetti, Dipartimento di Chimica e Tecnologie
del Farmaco, Sapienza University of Rome, Rome, Italy
| | - Ettore Novellino
- Department
of Pharmacy, University of Naples Federico II, Naples, Italy
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Riccio G, Maisto M, Bottone S, Badolati N, Rossi GB, Tenore GC, Stornaiuolo M, Novellino E. WNT Inhibitory Activity of Malus Pumila miller cv Annurca and Malus domestica cv Limoncella Apple Extracts on Human Colon-Rectal Cells Carrying Familial Adenomatous Polyposis Mutations. Nutrients 2017; 9:nu9111262. [PMID: 29156563 PMCID: PMC5707734 DOI: 10.3390/nu9111262] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/02/2017] [Accepted: 11/15/2017] [Indexed: 12/21/2022] Open
Abstract
Inhibitors of the Wingless-related Integration site (WNT)/β-catenin pathway have recently been under consideration as potential chemopreventive agents against Familial Adenomatous Polyposis (FAP). This autosomal-dominant syndrome is caused by germline mutations in the gene coding for the protein APC and leads to hyperactivation of the WNT/β-catenin signaling pathway, uncontrolled intestinal cell proliferation and formation of adenocarcinomas. The aim of the present work was to: (i) test, on in vitro cultures of cells carrying FAP mutations and on ex vivo biopsies of FAP patients, the WNT inhibitory activity of extracts from two common southern Italian apples, Malus pumila Miller cv. 'Annurca' and Malus domestica cv 'Limoncella'; (ii) identify the mechanisms underpinning their activities and; (iii) evaluate their potency upon gastrointestinal digestion. We here show that both Annurca and Limoncella apple extracts act as WNT inhibitors, mostly thanks to their polyphenolic contents. They inhibit the pathway in colon cells carrying FAP mutations with active dilutions falling in ranges close to consumer-relevant concentrations. Food-grade manufacturing of apple extracts increases their WNT inhibitory activity as result of the conversion of quercetin glycosides into the aglycone quercetin, a potent WNT inhibitor absent in the fresh fruit extract. However, in vitro simulated gastrointestinal digestion severely affected WNT inhibitory activity of apple extracts, as result of a loss of polyphenols. In conclusion, our results show that apple extracts inhibit the WNT pathway in colon cells carrying FAP mutations and represent a potential nutraceutical alternative for the treatment of this pathology. Enteric coating is advisable to preserve the activity of the extracts in the colon-rectal section of the digestive tract.
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Affiliation(s)
- Gennaro Riccio
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
| | - Maria Maisto
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
| | - Sara Bottone
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
| | - Nadia Badolati
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
| | - Giovanni Battista Rossi
- Gastroenterology and Gastrointestinal Endoscopy Unit, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, 80131 Naples, Italy.
| | - Gian Carlo Tenore
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
| | - Mariano Stornaiuolo
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
| | - Ettore Novellino
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy.
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Hesterly S, Bottone S. Forewarned is forearmed--project iatrogenesis. Calif Nurse 1978; 74:2. [PMID: 251434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Bottone S. Collective bargaining: an approach to implementing professional standards. Fla Nurse 1968; 16:3-11. [PMID: 5189045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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