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Iranmanesh Z, Dehestani M, Esmaeili-Mahani S. Discovering novel targets of abscisic acid using computational approaches. Comput Biol Chem 2024; 112:108157. [PMID: 39047594 DOI: 10.1016/j.compbiolchem.2024.108157] [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: 05/14/2024] [Revised: 07/16/2024] [Accepted: 07/17/2024] [Indexed: 07/27/2024]
Abstract
Abscisic acid (ABA) is a crucial plant hormone that is naturally produced in various mammalian tissues and holds significant potential as a therapeutic molecule in humans. ABA is selected for this study due to its known roles in essential human metabolic processes, such as glucose homeostasis, immune responses, cardiovascular system, and inflammation regulation. Despite its known importance, the molecular mechanism underlying ABA's action remain largely unexplored. This study employed computational techniques to identify potential human ABA receptors. We screened 64 candidate molecules using online servers and performed molecular docking to assess binding affinity and interaction types with ABA. The stability and dynamics of the best complexes were investigated using molecular dynamics simulation over a 100 ns time period. Root mean square fluctuations (RMSF), root mean square deviation (RMSD), solvent-accessible surface area (SASA), radius of gyration (Rg), free energy landscape (FEL), and principal component analysis (PCA) were analyzed. Next, the molecular mechanics Poisson-Boltzmann surface area (MM-PBSA) method was employed to calculate the binding energies of the complexes based on the simulated data. Our study successfully pinpointed four key receptors responsible for ABA signaling (androgen receptor, glucocorticoid receptor, mineralocorticoid receptor, and retinoic acid receptor beta) that have a strong affinity for binding with ABA and remained structurally stable throughout the simulations. The simulations with Hydralazine as an unrelated ligand were conducted to validate the specificity of the identified receptors for ABA. The findings of this study can contribute to further experimental validation and a better understanding of how ABA functions in humans.
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Affiliation(s)
- Zahra Iranmanesh
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Maryam Dehestani
- Department of Chemistry, Shahid Bahonar University of Kerman, Kerman, Iran.
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2
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Gharib A, Marquez C, Meseguer-Beltran M, Sanchez-Sarasua S, Sanchez-Perez AM. Abscisic acid, an evolutionary conserved hormone: Biosynthesis, therapeutic and diagnostic applications in mammals. Biochem Pharmacol 2024; 229:116521. [PMID: 39251140 DOI: 10.1016/j.bcp.2024.116521] [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: 07/09/2024] [Revised: 08/26/2024] [Accepted: 09/05/2024] [Indexed: 09/11/2024]
Abstract
Abscisic acid (ABA), a phytohormone traditionally recognized for its role in plant stress responses, has recently emerged as a significant player in mammalian defense mechanisms. Like plants, various mammalian cell types synthesize ABA in response to specific health challenges, although the precise pathways remain not fully elucidated. ABA is associated with the regulation of inflammation and insulin signaling, prompting extensive research into its potential as a therapeutic agent for various diseases. ABA exerts its effects through its receptors, particularly PPAR-γ and LANCL-2, which serve as signaling hubs regulating numerous pathways. Through these interactions, ABA profoundly impacts mammalian health, and new ABA targets continue to be identified. Numerous studies in animal models demonstrate ABA's benefit in managing conditions such as neurological and psychiatric disorders, cancer, and malaria infections, all of which involve significant inflammatory dysregulation. In this manuscript we review the studies covering ABA synthesis and release in cell cultures, the signaling pathways regulated by ABA, and how these impact health in preclinical models. Furthermore, we highlight recent research suggesting that measuring ABA levels in human body fluids could serve as a useful biomarker for pathological conditions, providing insights into disease progression and treatment efficacy. This comprehensive review outlines the current understanding of ABA in mammalian pathophysiology, identifying gaps in knowledge, particularly concerning ABA biosynthesis and metabolism in mammals. In addition, this study emphasizes the need for clinical trials to validate the effectiveness of ABA-based therapies and its reliability as a biomarker for various diseases.
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Affiliation(s)
- Amir Gharib
- Neurobiotecnologia Group, Institute of Advanced Materiales (INAM), Universitat Jaume I, Avda. de Vicent Sos Baynat, S/n, 12071 Castelló de La Plana, Spain; Department of Laboratory Sciences, Borujerd Branch, Islamic Azad University, Borujerd, Iran
| | - Carlee Marquez
- Neurobiotecnologia Group, Institute of Advanced Materiales (INAM), Universitat Jaume I, Avda. de Vicent Sos Baynat, S/n, 12071 Castelló de La Plana, Spain
| | - Maria Meseguer-Beltran
- Neurobiotecnologia Group, Institute of Advanced Materiales (INAM), Universitat Jaume I, Avda. de Vicent Sos Baynat, S/n, 12071 Castelló de La Plana, Spain
| | - Sandra Sanchez-Sarasua
- Neurobiotecnologia Group, Institute of Advanced Materiales (INAM), Universitat Jaume I, Avda. de Vicent Sos Baynat, S/n, 12071 Castelló de La Plana, Spain; CNRS UMR 5293, Institut Des Maladies Neurodégénératives, Centre Paul Broca-Nouvelle Aquitaine, University of Bordeaux, Bordeaux, France.
| | - Ana M Sanchez-Perez
- Neurobiotecnologia Group, Institute of Advanced Materiales (INAM), Universitat Jaume I, Avda. de Vicent Sos Baynat, S/n, 12071 Castelló de La Plana, Spain.
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Cheng HY, Wang W, Wang W, Yang MY, Zhou YY. Interkingdom Hormonal Regulations between Plants and Animals Provide New Insight into Food Safety. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4-26. [PMID: 38156955 DOI: 10.1021/acs.jafc.3c04712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Food safety has become an attractive topic among consumers. Raw material production for food is also a focus of social attention. As hormones are widely used in agriculture and human disease control, consumers' concerns about the safety of hormone agents have never disappeared. The present review focuses on the interkingdom regulations of exogenous animal hormones in plants and phytohormones in animals, including physiology and stress resistance. We summarize these interactions to give the public, researchers, and policymakers some guidance and suggestions. Accumulated evidence demonstrates comprehensive hormonal regulation across plants and animals. Animal hormones, interacting with phytohormones, help regulate plant development and enhance environmental resistance. Correspondingly, phytohormones may also cause damage to the reproductive and urinary systems of animals. Notably, the disease-resistant role of phytohormones is revealed against neurodegenerative diseases, cardiovascular disease, cancer, and diabetes. These resistances derive from the control for abnormal cell cycle, energy balance, and activity of enzymes. Further exploration of these cross-kingdom mechanisms would surely be of greater benefit to human health and agriculture development.
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Affiliation(s)
- Hang-Yuan Cheng
- State Key Laboratory of Plant Environmental Resilience, Engineering Research Center of Plant Growth Regulator, Ministry of Education & College of Agronomy and Biotechnology, China Agricultural University, No. 2 Yuanmingyuan Xi Lu, Haidian District, Beijing 100193, China
- State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- College of Advanced Agricultural Sciences, University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Wen Wang
- Human Development Family Studies, Iowa State University, 2330 Palmer Building, Ames, Iowa 50010, United States
| | - Wei Wang
- State Key Laboratory of Plant Environmental Resilience, Engineering Research Center of Plant Growth Regulator, Ministry of Education & College of Agronomy and Biotechnology, China Agricultural University, No. 2 Yuanmingyuan Xi Lu, Haidian District, Beijing 100193, China
| | - Mu-Yu Yang
- State Key Laboratory of Plant Environmental Resilience, Engineering Research Center of Plant Growth Regulator, Ministry of Education & College of Agronomy and Biotechnology, China Agricultural University, No. 2 Yuanmingyuan Xi Lu, Haidian District, Beijing 100193, China
| | - Yu-Yi Zhou
- State Key Laboratory of Plant Environmental Resilience, Engineering Research Center of Plant Growth Regulator, Ministry of Education & College of Agronomy and Biotechnology, China Agricultural University, No. 2 Yuanmingyuan Xi Lu, Haidian District, Beijing 100193, China
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4
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Wong A, Bi C, Chi W, Hu N, Gehring C. Amino acid motifs for the identification of novel protein interactants. Comput Struct Biotechnol J 2022; 21:326-334. [PMID: 36582434 PMCID: PMC9791077 DOI: 10.1016/j.csbj.2022.12.012] [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: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Biological systems consist of multiple components of different physical and chemical properties that require complex and dynamic regulatory loops to function efficiently. The discovery of ever more novel interacting sites in complex proteins suggests that we are only beginning to understand how cellular and biological functions are integrated and tuned at the molecular and systems levels. Here we review recently discovered interacting sites which have been identified through rationally designed amino acid motifs diagnostic for specific molecular functions, including enzymatic activities and ligand-binding properties. We specifically discuss the nature of the latter using as examples, novel hormone recognition and gas sensing sites that occur in moonlighting protein complexes. Drawing evidence from the current literature, we discuss the potential implications at the cellular, tissue, and/or organismal levels of such non-catalytic interacting sites and provide several promising avenues for the expansion of amino acid motif searches to discover hitherto unknown protein interactants and interaction networks. We believe this knowledge will unearth unexpected functions in both new and well-characterized proteins, thus filling existing conceptual gaps or opening new avenues for applications either as drug targets or tools in pharmacology, cell biology and bio-catalysis. Beyond this, motif searches may also support the design of novel, effective and sustainable approaches to crop improvements and the development of new therapeutics.
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Affiliation(s)
- Aloysius Wong
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, Ouhai, Wenzhou, Zhejiang Province 325060, China
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Chuyun Bi
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China
- Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, Ouhai, Wenzhou, Zhejiang Province 325060, China
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Wei Chi
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Ningxin Hu
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, 88 Daxue Road, Ouhai, Wenzhou, Zhejiang Province 325060, China
| | - Chris Gehring
- Department of Chemistry, Biology & Biotechnology, University of Perugia, Perugia 06121, Italy
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Abscisic Acid Improves Insulin Action on Glycemia in Insulin-Deficient Mouse Models of Type 1 Diabetes. Metabolites 2022; 12:metabo12060523. [PMID: 35736456 PMCID: PMC9227369 DOI: 10.3390/metabo12060523] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 01/27/2023] Open
Abstract
Abscisic acid (ABA), a plant hormone, has recently been shown to play a role in glycemia regulation in mammals, by stimulating insulin-independent glucose uptake and metabolism in skeletal muscle. The aim of this study was to test whether ABA could improve glycemic control in a murine model of type 1 diabetes (T1D). Mice were rendered diabetic with streptozotocin and the effect of ABA administration, alone or with insulin, was tested on glycemia. Diabetic mice treated with a single oral dose of ABA and low-dose subcutaneous insulin showed a significantly reduced glycemia profile compared with controls treated with insulin alone. In diabetic mice treated for four weeks with ABA, the effect of low-dose insulin on the glycemia profile after glucose load was significantly improved, and transcription both of the insulin receptor, and of glycolytic enzymes in muscle, was increased. Moreover, a significantly increased transcription and protein expression of AMPK, PGC1-α, and GLUT4 was observed in the skeletal muscle from diabetic mice treated with ABA, compared with untreated controls. ABA supplementation in conjunction with insulin holds the promise of reducing the dose of insulin required in T1D, reducing the risk of hypoglycemia, and improving muscle insulin sensitivity and glucose consumption.
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Huang W, Gu H, Zhan Z, Wang R, Song L, Zhang Y, Zhang Y, Li S, Li J, Zang Y, Li Y, Qian B. The plant hormone abscisic acid stimulates megakaryocyte differentiation from human iPSCs in vitro. Platelets 2021; 33:462-470. [PMID: 34223794 DOI: 10.1080/09537104.2021.1944616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
In the clinic, the supply of platelets is frequently insufficient to meet transfusion needs. To address this issue, many scientists have established the derivation of functional platelets from CD34+ cells or human pluripotent stem cells (PSCs). However, the yield of platelets is still far below what is required. Here we found that the plant hormone abscisic acid (ABA) could increase the generation of megakaryocytes (MKs) and platelets from human induced PSCs (hiPSCs). During platelet derivation, ABA treatment promoted the generation of CD34+/CD45+ HPCs and CD41+ MKs on day 14 and then increased CD41+/CD42b+ MKs and platelets on day 19. Moreover, we found ABA-mediated activation of Akt and ERK1/2 signal pathway through receptors LANCL2 and GRP78 in a PKA-dependent manner on CD34+/CD45+ cells. In conclusion, our data suggest that ABA treatment can promote CD34+/CD45+ HPC proliferation and CD41+ MK differentiation.
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Affiliation(s)
- Weihua Huang
- Department of Transfusion Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai China.,Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Health Committee Key Laboratory of Pediatric Hematology & Oncology, Shanghai, China
| | - Haihui Gu
- Department of Transfusion Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai China
| | - Zhiyan Zhan
- Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Health Committee Key Laboratory of Pediatric Hematology & Oncology, Shanghai, China
| | - Ruoru Wang
- Department of Neurology, The First Affiliated Hospital of Naval Medical University, Shanghai China
| | - Lili Song
- Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Health Committee Key Laboratory of Pediatric Hematology & Oncology, Shanghai, China
| | - Yan Zhang
- Department of Hematology, The First Affiliated Hospital of Naval Medical University, Shanghai China
| | - Yingwen Zhang
- Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Health Committee Key Laboratory of Pediatric Hematology & Oncology, Shanghai, China
| | - Shanshan Li
- Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Health Committee Key Laboratory of Pediatric Hematology & Oncology, Shanghai, China
| | - Jinqi Li
- Department of Transfusion Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai China
| | - Yan Zang
- Department of Transfusion Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai China
| | - Yanxin Li
- Department of Hematology & Oncology, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, National Health Committee Key Laboratory of Pediatric Hematology & Oncology, Shanghai, China
| | - Baohua Qian
- Department of Transfusion Medicine, The First Affiliated Hospital of Naval Medical University, Shanghai China
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7
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Jung Y, Cackowski FC, Yumoto K, Decker AM, Wang Y, Hotchkin M, Lee E, Buttitta L, Taichman RS. Abscisic acid regulates dormancy of prostate cancer disseminated tumor cells in the bone marrow. Neoplasia 2020; 23:102-111. [PMID: 33296752 PMCID: PMC7721692 DOI: 10.1016/j.neo.2020.11.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 11/11/2020] [Accepted: 11/16/2020] [Indexed: 01/26/2023] Open
Abstract
Prostate cancer (PCa) commonly metastasizes to the bone where the cells frequently undergo dormancy. The escape of disseminated tumor cells from cellular dormancy is a major cause of recurrence in marrow. Abscisic acid (ABA), a phytohormone, is known to regulate dormancy of plant seeds and to regulate other stress responses in plants. Recently, ABA was found to be synthesized by mammals cells and has been linked to human disease. Yet the role of ABA in regulating tumor dormancy or reactivation is unknown. We found that ABA is produced by human marrow cells, and exogenous ABA inhibits PCa cell proliferation while increasing the expression of p27, p21, and p16 and decreasing the expression of the proliferation marker, Ki67. Further, ABA significantly increased the percentage of PCa cells in the G0 phase of the cell cycle as well as the duration the cells were arrested in G0. We found that ABA regulates an increase of PPARγ receptor expression and suppressed phosphorylation of mTOR/p70S6K signaling and resulting in the induction of the cellular dormancy. We then confirmed that ABA regulates G0 cell cycle arrest through PPARγ receptor signaling in vitro and under co-culture conditions with osteoblasts. Finally, we demonstrate that ABA regulates PCa dormancy in vivo following intratibial injection in an animal model. Together these data suggest that the ABA and PPARγ signaling pathways contribute to the establishment of PCa cellular dormancy in the bone marrow microenvironment. These findings may suggest critical pathways for targeting metastatic disease.
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Affiliation(s)
- Younghun Jung
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA; Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Frank C Cackowski
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA; Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan School of Medicine, Ann Arbor, MI, USA; Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA
| | - Kenji Yumoto
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Ann M Decker
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Yu Wang
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Megan Hotchkin
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Eunsohl Lee
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA
| | - Laura Buttitta
- Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Russell S Taichman
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, USA; Department of Periodontics, University of Alabama at Birmingham, Birmingham, AL, USA.
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Magnone M, Sturla L, Guida L, Spinelli S, Begani G, Bruzzone S, Fresia C, Zocchi E. Abscisic Acid: A Conserved Hormone in Plants and Humans and a Promising Aid to Combat Prediabetes and the Metabolic Syndrome. Nutrients 2020; 12:nu12061724. [PMID: 32526875 PMCID: PMC7352484 DOI: 10.3390/nu12061724] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/03/2020] [Accepted: 06/03/2020] [Indexed: 12/25/2022] Open
Abstract
Abscisic acid (ABA) is a hormone with a very long evolutionary history, dating back to the earliest living organisms, of which modern (ABA-producing) cyanobacteria are likely the descendants, well before separation of the plant and animal kingdoms, with a conserved role as a signal regulating cell responses to environmental challenges. In mammals, nanomolar ABA controls the metabolic response to glucose availability by stimulating glucose uptake in skeletal muscle and adipose tissue with an insulin-independent mechanism and increasing energy expenditure in the brown and white adipose tissues. Activation by ABA of AMP-dependent kinase (AMPK), in contrast to the insulin-induced activation of AMPK-inhibiting Akt, is responsible for stimulation of GLUT4-mediated muscle glucose uptake, and for the browning effect on white adipocytes. Intake of micrograms per Kg body weight of ABA improves glucose tolerance in both normal and in borderline subjects and chronic intake of such a dose of ABA improves blood glucose, lipids and morphometric parameters (waist circumference and body mass index) in borderline subjects for prediabetes and the metabolic syndrome. This review summarizes the most recent results obtained in vivo with microgram amounts of ABA, the role of the receptor LANCL2 in the hormone’s action and the significance of the endowment by mammals of two different hormones controlling the metabolic response to glucose availability. Finally, open issues in need of further investigation and perspectives for the clinical use of nutraceutical ABA are discussed.
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Affiliation(s)
- Mirko Magnone
- Nutravis S.r.l., Via Corsica 2/19, 16128 Genova, Italy
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
- Correspondence: (M.M.); (E.Z.); Tel.: +39-10-3538131 (M.M.); +39-10-3538161 (E.Z.)
| | - Laura Sturla
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
| | - Lucrezia Guida
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
| | - Sonia Spinelli
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
| | - Giulia Begani
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
| | - Santina Bruzzone
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
| | - Chiara Fresia
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, 10010 N Torrey Pines Rd, La Jolla, CA 92037, USA;
| | - Elena Zocchi
- Department of Experimental Medicine, University of Genova, 16132 Genova, Italy; (L.S.); (L.G.); (S.S.); (G.B.); (S.B.)
- Correspondence: (M.M.); (E.Z.); Tel.: +39-10-3538131 (M.M.); +39-10-3538161 (E.Z.)
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Magnone M, Emionite L, Guida L, Vigliarolo T, Sturla L, Spinelli S, Buschiazzo A, Marini C, Sambuceti G, De Flora A, Orengo AM, Cossu V, Ferrando S, Barbieri O, Zocchi E. Insulin-independent stimulation of skeletal muscle glucose uptake by low-dose abscisic acid via AMPK activation. Sci Rep 2020; 10:1454. [PMID: 31996711 PMCID: PMC6989460 DOI: 10.1038/s41598-020-58206-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 01/07/2020] [Indexed: 02/07/2023] Open
Abstract
Abscisic acid (ABA) is a plant hormone active also in mammals where it regulates, at nanomolar concentrations, blood glucose homeostasis. Here we investigated the mechanism through which low-dose ABA controls glycemia and glucose fate. ABA stimulated uptake of the fluorescent glucose analog 2-NBDG by L6, and of [18F]-deoxy-glucose (FDG) by mouse skeletal muscle, in the absence of insulin, and both effects were abrogated by the specific AMPK inhibitor dorsomorphin. In L6, incubation with ABA increased phosphorylation of AMPK and upregulated PGC-1α expression. LANCL2 silencing reduced all these ABA-induced effects. In vivo, low-dose oral ABA stimulated glucose uptake and storage in the skeletal muscle of rats undergoing an oral glucose load, as detected by micro-PET. Chronic treatment with ABA significantly improved the AUC of glycemia and muscle glycogen content in CD1 mice exposed to a high-glucose diet. Finally, both acute and chronic ABA treatment of hypoinsulinemic TRPM2-/- mice ameliorated the glycemia profile and increased muscle glycogen storage. Altogether, these results suggest that low-dose oral ABA might be beneficial for pre-diabetic and diabetic subjects by increasing insulin-independent skeletal muscle glucose disposal through an AMPK-mediated mechanism.
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Affiliation(s)
- Mirko Magnone
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy. .,Nutravis S.r.l., Via Corsica 2/19, 16128, Genova, Italy.
| | - Laura Emionite
- Animal Facility, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy
| | - Lucrezia Guida
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy
| | - Tiziana Vigliarolo
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy
| | - Laura Sturla
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy
| | - Sonia Spinelli
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy
| | - Ambra Buschiazzo
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy
| | - Cecilia Marini
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy.,CNR Institute of Bioimages and Molecular Physiology, Milan, Italy.,Department of Health Sciences, Via A. Pastore 1, Genova, Italy
| | - Gianmario Sambuceti
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy.,CNR Institute of Bioimages and Molecular Physiology, Milan, Italy.,Department of Health Sciences, Via A. Pastore 1, Genova, Italy
| | - Antonio De Flora
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy
| | - Anna Maria Orengo
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy
| | - Vanessa Cossu
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy
| | - Sara Ferrando
- Department of Earth, Environmental and Life Sciences, University of Genova, Corso Europa 26, Genova, Italy
| | - Ottavia Barbieri
- Animal Facility, IRCCS Ospedale Policlinico San Martino, Largo Benzi 10, 16132, Genova, Italy
| | - Elena Zocchi
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1, 16132, Genova, Italy.
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Booz V, Christiansen CB, Kuhre RE, Saltiel MY, Sociali G, Schaltenberg N, Fischer AW, Heeren J, Zocchi E, Holst JJ, Bruzzone S. Abscisic acid stimulates the release of insulin and of GLP-1 in the rat perfused pancreas and intestine. Diabetes Metab Res Rev 2019; 35:e3102. [PMID: 30468287 DOI: 10.1002/dmrr.3102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 10/07/2018] [Accepted: 11/19/2018] [Indexed: 01/28/2023]
Abstract
AIMS Previous results indicate that nanomolar concentrations of abscisic acid (ABA) stimulate insulin release from β-pancreatic cells in vitro and that oral ABA at 50 mg/kg increases plasma GLP-1 in the fasted rat. The aim of this study was to test the effect of ABA on the perfused rat pancreas and intestine, to verify the insulin- and incretin-releasing actions of ABA in controlled physiological models. MATERIALS AND METHODS Rat pancreas and small intestine were perfused with solutions containing ABA at high-micromolar concentrations, or control secretagogues. Insulin and GLP-1 concentrations in the venous effluent were analysed by radioimmunoassay, and ABA levels were determined by ELISA. RESULTS High micromolar concentrations of ABA induced GLP-1 secretion from the proximal half of the small intestine and insulin secretion from pancreas. GLP-1 stimulated ABA secretion from pancreas in a biphasic manner. Notably, a positive correlation was found between the ABA area under the curve (AUC) and the insulin AUC upon GLP-1 administration. CONCLUSION Our results indicate the existence of a cross talk between GLP-1 and ABA, whereby ABA stimulates GLP-1 secretion, and vice versa. Release of ABA could be considered as a new promising molecule in the strategy of type 2 diabetes treatment and as a new endogenous hormone in the regulation of glycaemia.
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Affiliation(s)
- Valeria Booz
- Department of Experimental Medicine, Section of Biochemistry, and CEBR, University of Genova, Genoa, Italy
| | - Charlotte Bayer Christiansen
- NovoNordisk Foundation Center for Metabolic Research and Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Rune Ehrenreich Kuhre
- NovoNordisk Foundation Center for Metabolic Research and Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Monika Yosifova Saltiel
- NovoNordisk Foundation Center for Metabolic Research and Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Giovanna Sociali
- Department of Experimental Medicine, Section of Biochemistry, and CEBR, University of Genova, Genoa, Italy
| | - Nicola Schaltenberg
- Department of Biochemistry and Molecular Biology II: Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Alexander W Fischer
- Department of Biochemistry and Molecular Biology II: Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jörg Heeren
- Department of Biochemistry and Molecular Biology II: Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Elena Zocchi
- Department of Experimental Medicine, Section of Biochemistry, and CEBR, University of Genova, Genoa, Italy
| | - Jens J Holst
- NovoNordisk Foundation Center for Metabolic Research and Department of Biomedical Sciences, Panum Institute, University of Copenhagen, Copenhagen, Denmark
| | - Santina Bruzzone
- Department of Experimental Medicine, Section of Biochemistry, and CEBR, University of Genova, Genoa, Italy
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11
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Rational Discovery of (+) (S) Abscisic Acid as a Potential Antifungal Agent: a Repurposing Approach. Sci Rep 2018; 8:8565. [PMID: 29867091 PMCID: PMC5986790 DOI: 10.1038/s41598-018-26998-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 05/14/2018] [Indexed: 12/20/2022] Open
Abstract
Fungal infections are spreading widely worldwide, and the types of treatment are limited due to the lack of diverse therapeutic agents and their associated side effects and toxicity. The discovery of new antifungal classes is vital and critical. We discovered the antifungal activity of abscisic acid through a rational drug design methodology that included the building of homology models for fungal chorismate mutases and a pharmacophore model derived from a transition state inhibitor. Ligand-based virtual screening resulted in some hits that were filtered using molecular docking and molecular dynamic simulations studies. Both in silico methods and in vitro antifungal assays were used as tools to select and validate the abscisic acid repurposing. Abscisic acid inhibition assays confirmed the inhibitory effect of abscisic acid on chorismate mutase through the inhibition of phenylpyruvate production. The repositioning of abscisic acid, the well-known and naturally occurring plant growth regulator, as a potential antifungal agent because of its suggested action as an inhibitor to several fungal chorismate mutases was the main result of this work.
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12
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Olds CL, Glennon EKK, Luckhart S. Abscisic acid: new perspectives on an ancient universal stress signaling molecule. Microbes Infect 2018; 20:484-492. [PMID: 29408537 DOI: 10.1016/j.micinf.2018.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 01/06/2023]
Abstract
Few biological molecules have as far reaching and dynamic effects as abscisic acid (ABA). In this review, we draw together the often segregated fields of plant, animal, and human biology to highlight ABA biosynthesis, signaling and physiological effects with examples of host-pathogen interactions to emphasize the cross-kingdom biology of this ancient signaling molecule.
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Affiliation(s)
- Cassandra L Olds
- Department of Entomology, Plant Pathology and Nematology, University of Idaho, 875 Perimeter Drive MS 2329, Moscow, ID, 83844-2329, USA; Center for Health in the Human Ecosystem, University of Idaho, 875 Perimeter Drive MS 1122, Moscow, ID, 83844-1122, USA.
| | - Elizabeth K K Glennon
- Center for Infectious Disease Research, 307 Westlake Ave N, Suite 500, Seattle, WA, 98109, USA
| | - Shirley Luckhart
- Department of Entomology, Plant Pathology and Nematology, University of Idaho, 875 Perimeter Drive MS 2329, Moscow, ID, 83844-2329, USA; Center for Health in the Human Ecosystem, University of Idaho, 875 Perimeter Drive MS 1122, Moscow, ID, 83844-1122, USA; Department of Biological Sciences, University of Idaho 875 Perimeter Drive, MS 3051, Moscow, ID, 83844-3051, USA
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13
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Glennon EKK, Torrevillas BK, Morrissey SF, Ejercito JM, Luckhart S. Abscisic acid induces a transient shift in signaling that enhances NF-κB-mediated parasite killing in the midgut of Anopheles stephensi without reducing lifespan or fecundity. Parasit Vectors 2017; 10:333. [PMID: 28705245 PMCID: PMC5508651 DOI: 10.1186/s13071-017-2276-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 07/06/2017] [Indexed: 12/28/2022] Open
Abstract
Background Abscisic acid (ABA) is naturally present in mammalian blood and circulating levels can be increased by oral supplementation. We showed previously that oral ABA supplementation in a mouse model of Plasmodium yoelii 17XNL infection reduced parasitemia and gametocytemia, spleen and liver pathology, and parasite transmission to the mosquito Anopheles stephensi fed on these mice. Treatment of cultured Plasmodium falciparum with ABA at levels detected in our model had no effects on asexual growth or gametocyte formation in vitro. However, ABA treatment of cultured P. falciparum immediately prior to mosquito feeding significantly reduced oocyst development in A. stephensi via ABA-dependent synthesis of nitric oxide (NO) in the mosquito midgut. Results Here we describe the mechanisms of effects of ABA on mosquito physiology, which are dependent on phosphorylation of TGF-β-activated kinase 1 (TAK1) and associated with changes in homeostatic gene expression and activity of kinases that are central to metabolic regulation in the midgut epithelium. Collectively, the timing of these effects suggests a transient physiological shift that enhances NF-κB-dependent innate immunity without significantly altering mosquito lifespan or fecundity. Conclusions ABA is a highly conserved regulator of immune and metabolic homeostasis within the malaria vector A. stephensi with potential as a transmission-blocking supplemental treatment. Electronic supplementary material The online version of this article (doi:10.1186/s13071-017-2276-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elizabeth K K Glennon
- Department of Medical Microbiology and Immunology, University of California at Davis, Davis, CA, USA.,Center for Infectious Disease Research, Seattle, WA, USA
| | - Brandi K Torrevillas
- Department of Medical Microbiology and Immunology, University of California at Davis, Davis, CA, USA.,Department of Entomology, Plant Pathology and Nematology, University of Idaho, Moscow, ID, USA.,Department of Biological Sciences, University of Idaho, Moscow, ID, USA
| | - Shannon F Morrissey
- Department of Medical Microbiology and Immunology, University of California at Davis, Davis, CA, USA
| | - Jadrian M Ejercito
- Department of Medical Microbiology and Immunology, University of California at Davis, Davis, CA, USA.,Department of Entomology, University of California at Riverside, Riverside, CA, USA
| | - Shirley Luckhart
- Department of Medical Microbiology and Immunology, University of California at Davis, Davis, CA, USA. .,Department of Entomology, Plant Pathology and Nematology, University of Idaho, Moscow, ID, USA. .,Department of Biological Sciences, University of Idaho, Moscow, ID, USA.
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14
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Zocchi E, Hontecillas R, Leber A, Einerhand A, Carbo A, Bruzzone S, Tubau-Juni N, Philipson N, Zoccoli-Rodriguez V, Sturla L, Bassaganya-Riera J. Abscisic Acid: A Novel Nutraceutical for Glycemic Control. Front Nutr 2017; 4:24. [PMID: 28660193 PMCID: PMC5468461 DOI: 10.3389/fnut.2017.00024] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 05/19/2017] [Indexed: 01/03/2023] Open
Abstract
Abscisic acid is naturally present in fruits and vegetables, and it plays an important role in managing glucose homeostasis in humans. According to the latest U.S. dietary survey, about 92% of the population might have a deficient intake of ABA due to their deficient intake of fruits and vegetables. This review summarizes the in vitro, preclinical, mechanistic, and human translational findings obtained over the past 15 years in the study of the role of ABA in glycemic control. In 2007, dietary ABA was first reported to ameliorate glucose tolerance and obesity-related inflammation in mice. The most recent findings regarding the topic of ABA and its proposed receptor lanthionine synthetase C-like 2 in glycemic control and their interplay with insulin and glucagon-like peptide-1 suggest a major role for ABA in the physiological response to a glucose load in humans. Moreover, emerging evidence suggests that the ABA response might be dysfunctional in diabetic subjects. Follow on intervention studies in healthy individuals show that low-dose dietary ABA administration exerts a beneficial effect on the glycemia and insulinemia profiles after oral glucose load. These recent findings showing benefits in humans, together with extensive efficacy data in mouse models of diabetes and inflammatory disease, suggest the need for reference ABA values and its possible exploitation of the glycemia-lowering effects of ABA for preventative purposes. Larger clinical studies on healthy, prediabetic, and diabetic subjects are needed to determine whether addressing the widespread dietary ABA deficiency improves glucose control in humans.
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Affiliation(s)
- Elena Zocchi
- Department of Experimental Medicine, Section of Biochemistry and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Raquel Hontecillas
- BioTherapeutics Inc., Blacksburg, VA, United States.,Nutritional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech, Blacksburg, VA, United States
| | - Andrew Leber
- BioTherapeutics Inc., Blacksburg, VA, United States
| | | | - Adria Carbo
- BioTherapeutics Inc., Blacksburg, VA, United States
| | - Santina Bruzzone
- Department of Experimental Medicine, Section of Biochemistry and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Nuria Tubau-Juni
- Nutritional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech, Blacksburg, VA, United States
| | | | | | - Laura Sturla
- Department of Experimental Medicine, Section of Biochemistry and Center of Excellence for Biomedical Research, University of Genoa, Genoa, Italy
| | - Josep Bassaganya-Riera
- BioTherapeutics Inc., Blacksburg, VA, United States.,Nutritional Immunology and Molecular Medicine Laboratory, Biocomplexity Institute of Virginia Tech, Blacksburg, VA, United States
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15
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Malara A, Fresia C, Di Buduo CA, Soprano PM, Moccia F, Balduini C, Zocchi E, De Flora A, Balduini A. The Plant Hormone Abscisic Acid Is a Prosurvival Factor in Human and Murine Megakaryocytes. J Biol Chem 2017; 292:3239-3251. [PMID: 28049729 DOI: 10.1074/jbc.m116.751693] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 12/23/2016] [Indexed: 11/06/2022] Open
Abstract
Abscisic acid (ABA) is a phytohormone involved in pivotal physiological functions in higher plants. Recently, ABA has been proven to be also secreted and active in mammals, where it stimulates the activity of innate immune cells, mesenchymal and hematopoietic stem cells, and insulin-releasing pancreatic β cells through a signaling pathway involving the second messenger cyclic ADP-ribose (cADPR). In addition to behaving like an animal hormone, ABA also holds promise as a nutraceutical plant-derived compound in humans. Many biological functions of ABA in mammals are mediated by its binding to the LANCL-2 receptor protein. A putative binding of ABA to GRP78, a key regulator of endoplasmic reticulum stress, has also been proposed. Here we investigated the role of exogenous ABA in modulating thrombopoiesis, the process of platelet generation. Our results demonstrate that expression of both LANCL-2 and GRP78 is up-regulated during hematopoietic stem cell differentiation into mature megakaryocytes (Mks). Functional ABA receptors exist in mature Mks because ABA induces an intracellular Ca2+ increase ([Ca2+] i ) through PKA activation and subsequent cADPR generation. In vitro exposure of human or murine hematopoietic progenitor cells to 10 μm ABA does not increase recombinant thrombopoietin (rTpo)-dependent Mk differentiation or platelet release. However, under conditions of cell stress induced by rTpo and serum deprivation, ABA stimulates, in a PKA- and cADPR-dependent fashion, the mitogen-activated kinase ERK 1/2, resulting in the modulation of lymphoma 2 (Bcl-2) family members, increased Mk survival, and higher rates of platelet production. In conclusion, we demonstrate that ABA is a prosurvival factor for Mks in a Tpo-independent manner.
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Affiliation(s)
- Alessandro Malara
- Departments of Molecular Medicine, Laboratories of Biotechnology, IRCCS San Matteo Foundation
| | - Chiara Fresia
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Genova 16132, Italy
| | | | - Paolo Maria Soprano
- Departments of Molecular Medicine, Laboratories of Biotechnology, IRCCS San Matteo Foundation
| | - Francesco Moccia
- Biology and Biotechnology, University of Pavia, Pavia 27100, Italy
| | - Cesare Balduini
- Biology and Biotechnology, University of Pavia, Pavia 27100, Italy
| | - Elena Zocchi
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Genova 16132, Italy
| | - Antonio De Flora
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Genova 16132, Italy
| | - Alessandra Balduini
- Departments of Molecular Medicine, Laboratories of Biotechnology, IRCCS San Matteo Foundation; Department of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155.
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16
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Lievens L, Pollier J, Goossens A, Beyaert R, Staal J. Abscisic Acid as Pathogen Effector and Immune Regulator. FRONTIERS IN PLANT SCIENCE 2017; 8:587. [PMID: 28469630 PMCID: PMC5395610 DOI: 10.3389/fpls.2017.00587] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 03/31/2017] [Indexed: 05/18/2023]
Abstract
Abscisic acid (ABA) is a sesquiterpene signaling molecule produced in all kingdoms of life. To date, the best known functions of ABA are derived from its role as a major phytohormone in plant abiotic stress resistance. Different organisms have developed different biosynthesis and signal transduction pathways related to ABA. Despite this, there are also intriguing common themes where ABA often suppresses host immune responses and is utilized by pathogens as an effector molecule. ABA also seems to play an important role in compatible mutualistic interactions such as mycorrhiza and rhizosphere bacteria with plants, and possibly also the animal gut microbiome. The frequent use of ABA in inter-species communication could be a possible reason for the wide distribution and re-invention of ABA as a signaling molecule in different organisms. In humans and animal models, it has been shown that ABA treatment or nutrient-derived ABA is beneficial in inflammatory diseases like colitis and type 2 diabetes, which confer potential to ABA as an interesting nutraceutical or pharmacognostic drug. The anti-inflammatory activity, cellular metabolic reprogramming, and other beneficial physiological and psychological effects of ABA treatment in humans and animal models has sparked an interest in this molecule and its signaling pathway as a novel pharmacological target. In contrast to plants, however, very little is known about the ABA biosynthesis and signaling in other organisms. Genes, tools and knowledge about ABA from plant sciences and studies of phytopathogenic fungi might benefit biomedical studies on the physiological role of endogenously generated ABA in humans.
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Affiliation(s)
- Laurens Lievens
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIBGhent, Belgium
- Department of Biomedical Molecular Biology, Ghent UniversityGhent, Belgium
| | - Jacob Pollier
- VIB-UGent Center for Plant Systems Biology, VIBGhent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGhent, Belgium
| | - Alain Goossens
- VIB-UGent Center for Plant Systems Biology, VIBGhent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent UniversityGhent, Belgium
| | - Rudi Beyaert
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIBGhent, Belgium
- Department of Biomedical Molecular Biology, Ghent UniversityGhent, Belgium
| | - Jens Staal
- Unit of Molecular Signal Transduction in Inflammation, VIB-UGent Center for Inflammation Research, VIBGhent, Belgium
- Department of Biomedical Molecular Biology, Ghent UniversityGhent, Belgium
- *Correspondence: Jens Staal
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17
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Ubaidillah M, Safitri FA, Jo JH, Lee SK, Hussain A, Mun BG, Chung IK, Yun BW, Kim KM. Roles of plant hormones and anti-apoptosis genes during drought stress in rice (Oryza sativa L.). 3 Biotech 2016; 6:247. [PMID: 28330319 PMCID: PMC5114211 DOI: 10.1007/s13205-016-0564-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 11/03/2016] [Indexed: 12/18/2022] Open
Abstract
We previously identified the rice (Oryza sativa) senescence-associated gene OsSAP which encodes a highly conserved protein involved in anti-apoptotic activity. This novel Bax suppressor-related gene regulates tolerance to multiple stresses in yeast. Here, we show the effects of drought stress on leaf and root tissues of plants over-expressing OsSAP in relation to the levels of phytohormones, abscisic acid (ABA), jasmonic acid (JA), indole-3-carboxylic acid (ICA), gibberellic acid (GA3), and zeatin. Results showed that rice plants over-expressing SAP were tolerant to drought stress compared to wild type and the plants over-expressing AtBI-1, which is a homolog of the human Bax inhibitor-1 in Arabidopsis. ABA and JA levels in OsSAP and AtBI-1 transgenic plants consistently increased up to at least 3 days after drought treatment, whereas lower GA3 levels were recorded during early drought period. Comparison between control and transgenic plants overexpressing anti-apoptosis genes OsSAP and AtBI-1 resulted in different patterns of hormone levels, indicating that these genes are involved in the plant responses to drought stress and present an opportunity for further study on drought stress tolerance in rice and other plant species.
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Affiliation(s)
- Mohammad Ubaidillah
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566, Korea
| | - Fika Ayu Safitri
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566, Korea
| | - Jun-Hyeon Jo
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu, 41566, Korea
| | - Sang-Kyu Lee
- Research Institute of Pharmaceutical Sciences, College of Pharmacy, Kyungpook National University, Daegu, 41566, Korea
| | - Adil Hussain
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566, Korea
- Department of Agriculture, Abdul Wali Khan University, Mardan, Pakistan
| | - Bong-Gyu Mun
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566, Korea
| | - Il Kyung Chung
- Department of Biotechnology, Catholic University of Daegu, Gyeongsan-Si, Gyeongbuk, 38430, Korea
| | - Byung-Wook Yun
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566, Korea.
| | - Kyung-Min Kim
- Division of Plant Biosciences, School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National University, Daegu, 41566, Korea.
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18
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Jiao C, Yang R, Gu Z. Cyclic ADP-ribose and IP3 mediate abscisic acid-induced isoflavone accumulation in soybean sprouts. Biochem Biophys Res Commun 2016; 479:530-536. [PMID: 27664703 DOI: 10.1016/j.bbrc.2016.09.104] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2016] [Accepted: 09/20/2016] [Indexed: 10/21/2022]
Abstract
In this study, the roles of ABA-cADPR-Ca2+ and ABA-IP3-Ca2+ signaling pathways in UV-B-induced isoflavone accumulation in soybean sprouts were investigated. Results showed that abscisic acid (ABA) up regulated cyclic ADP-ribose (cADPR) and inositol 1,4,5-trisphosphate (IP3) levels in soybean sprouts under UV-B radiation. Furthermore, cADPR and IP3, as second messengers of UV-B-triggered ABA, induced isoflavone accumulation by up-regulating proteins and genes expression and activity of isoflavone biosynthetic-enzymes (chalcone synthase, CHS; isoflavone synthase, IFS). After Ca2+ was chelated by EGTA, isoflavone content decreased. Overall, ABA-induced cADPR and IP3 up regulated isoflavone accumulation which was mediated by Ca2+ signaling via enhancing the expression of proteins and genes participating in isoflavone biosynthesis in soybean sprouts under UV-B radiation.
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Affiliation(s)
- Caifeng Jiao
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Runqiang Yang
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China
| | - Zhenxin Gu
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, People's Republic of China.
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19
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G-protein coupling and nuclear translocation of the human abscisic acid receptor LANCL2. Sci Rep 2016; 6:26658. [PMID: 27222287 PMCID: PMC4879523 DOI: 10.1038/srep26658] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 04/27/2016] [Indexed: 02/03/2023] Open
Abstract
Abscisic acid (ABA), a long known phytohormone, has been recently demonstrated to be present also in humans, where it targets cells of the innate immune response, mesenchymal and hemopoietic stem cells and cells involved in the regulation of systemic glucose homeostasis. LANCL2, a peripheral membrane protein, is the mammalian ABA receptor. We show that N-terminal glycine myristoylation causes LANCL2 localization to the plasmamembrane and to cytoplasmic membrane vesicles, where it interacts with the α subunit of a Gi protein and starts the ABA signaling pathway via activation of adenylate cyclase. Demyristoylation of LANCL2 by chemical or genetic means triggers its nuclear translocation. Nuclear enrichment of native LANCL2 is also induced by ABA treatment. Therefore human LANCL2 is a non-transmembrane G protein-coupled receptor susceptible to hormone-induced nuclear translocation.
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20
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Abscisic acid influx into human nucleated cells occurs through the anion exchanger AE2. Int J Biochem Cell Biol 2016; 75:99-103. [PMID: 27015766 DOI: 10.1016/j.biocel.2016.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Revised: 02/09/2016] [Accepted: 03/17/2016] [Indexed: 11/24/2022]
Abstract
Abscisic acid (ABA) is a hormone conserved from cyanobacteria to higher plants, where it regulates responses to environmental stimuli. ABA also plays a role in mammalian physiology, pointedly in inflammatory responses and in glycemic control. As the animal ABA receptor is on the intracellular side of the plasma membrane, a transporter is required for the hormone's action. Here we demonstrate that ABA transport in human nucleated cells occurs via the anion exchanger AE2. Together with the recent demonstration that ABA influx into human erythrocytes occurs via Band 3, this result identifies the AE family members as the mammalian ABA transporters.
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21
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Magnone M, Ameri P, Salis A, Andraghetti G, Emionite L, Murialdo G, De Flora A, Zocchi E. Microgram amounts of abscisic acid in fruit extracts improve glucose tolerance and reduce insulinemia in rats and in humans. FASEB J 2015; 29:4783-93. [DOI: 10.1096/fj.15-277731] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 07/20/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Mirko Magnone
- Department of Experimental MedicineSection of Biochemistry and Center of Excellence for Biomedical ResearchUniversity of GenoaGenoaItaly
| | - Pietro Ameri
- Department of Internal MedicineUniversity of GenoaGenoaItaly
| | - Annalisa Salis
- Department of Experimental MedicineSection of Biochemistry and Center of Excellence for Biomedical ResearchUniversity of GenoaGenoaItaly
| | | | - Laura Emionite
- Animal Facility, Istituto di Ricovero e Cura a Carattere Scientifico, Azienda Ospedaliera Universitaria San Martino, Istituto Scientifico TumoriGenoaItaly
| | | | - Antonio De Flora
- Department of Experimental MedicineSection of Biochemistry and Center of Excellence for Biomedical ResearchUniversity of GenoaGenoaItaly
| | - Elena Zocchi
- Department of Experimental MedicineSection of Biochemistry and Center of Excellence for Biomedical ResearchUniversity of GenoaGenoaItaly
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22
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Vigliarolo T, Guida L, Millo E, Fresia C, Turco E, De Flora A, Zocchi E. Abscisic acid transport in human erythrocytes. J Biol Chem 2015; 290:13042-52. [PMID: 25847240 DOI: 10.1074/jbc.m114.629501] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Indexed: 11/06/2022] Open
Abstract
Abscisic acid (ABA) is a plant hormone involved in the response to environmental stress. Recently, ABA has been shown to be present and active also in mammals, where it stimulates the functional activity of innate immune cells, of mesenchymal and hemopoietic stem cells, and insulin-releasing pancreatic β-cells. LANCL2, the ABA receptor in mammalian cells, is a peripheral membrane protein that localizes at the intracellular side of the plasma membrane. Here we investigated the mechanism enabling ABA transport across the plasmamembrane of human red blood cells (RBC). Both influx and efflux of [(3)H]ABA occur across intact RBC, as detected by radiometric and chromatographic methods. ABA binds specifically to Band 3 (the RBC anion transporter), as determined by labeling of RBC membranes with biotinylated ABA. Proteoliposomes reconstituted with human purified Band 3 transport [(3)H]ABA and [(35)S]sulfate, and ABA transport is sensitive to the specific Band 3 inhibitor 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid. Once inside RBC, ABA stimulates ATP release through the LANCL2-mediated activation of adenylate cyclase. As ATP released from RBC is known to exert a vasodilator response, these results suggest a role for plasma ABA in the regulation of vascular tone.
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Affiliation(s)
- Tiziana Vigliarolo
- From the Department of Experimental Medicine, Section of Biochemistry, and
| | - Lucrezia Guida
- From the Department of Experimental Medicine, Section of Biochemistry, and
| | - Enrico Millo
- the Center of Excellence for Biomedical Research, University of Genova, Genova 16132, Italy and
| | - Chiara Fresia
- From the Department of Experimental Medicine, Section of Biochemistry, and
| | - Emilia Turco
- the Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino 10126, Italy
| | - Antonio De Flora
- From the Department of Experimental Medicine, Section of Biochemistry, and
| | - Elena Zocchi
- From the Department of Experimental Medicine, Section of Biochemistry, and
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23
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Kennedy DO. Polyphenols and the human brain: plant “secondary metabolite” ecologic roles and endogenous signaling functions drive benefits. Adv Nutr 2014; 5:515-33. [PMID: 25469384 PMCID: PMC4188223 DOI: 10.3945/an.114.006320] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Flavonoids and other polyphenols are ubiquitous plant chemicals that fulfill a range of ecologic roles for their home plant, including protection from a range of biotic and abiotic stressors and a pivotal role in the management of pathogenic and symbiotic soil bacteria and fungi. They form a natural part of the human diet, and evidence suggests that their consumption is associated with the beneficial modulation of a number of health-related variables, including those related to cardiovascular and brain function. Over recent years, the consensus as to the mechanisms responsible for these effects in humans has shifted away from polyphenols having direct antioxidant effects and toward their modulation of cellular signal transduction pathways. To date, little consideration has been given to the question of why, rather than how, these plant-derived chemicals might exert these effects. Therefore, this review summarizes the evidence suggesting that polyphenols beneficially affect human brain function and describes the current mechanistic hypotheses explaining these effects. It then goes on to describe the ecologic roles and potential endogenous signaling functions that these ubiquitous phytochemicals play within their home plant and discusses whether these functions drive their beneficial effects in humans via a process of “cross-kingdom” signaling predicated on the many conserved similarities in plant, microbial, and human cellular signal transduction pathways.
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Scarfì S. Purinergic receptors and nucleotide processing ectoenzymes: Their roles in regulating mesenchymal stem cell functions. World J Stem Cells 2014; 6:153-162. [PMID: 24772242 PMCID: PMC3999773 DOI: 10.4252/wjsc.v6.i2.153] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 02/10/2014] [Accepted: 03/12/2014] [Indexed: 02/06/2023] Open
Abstract
Human mesenchymal stem cells (MSCs) are a rare population of non-hematopoietic stem cells with multilineage potential, originally identified in the bone marrow. Due to the lack of a single specific marker, MSCs can be recognized and isolated by a series of features such as plastic adherence, a panel of surface markers, the clonogenic and the differentiation abilities. The recognized role of MSCs in the regulation of hemopoiesis, in cell-degeneration protection and in the homeostasis of mesodermal tissues through their differentiation properties, justifies the current interest in identifying the biochemical signals produced by MSCs and their active crosstalk in tissue environments. Only recently have extracellular nucleotides (eNTPs) and their metabolites been included among the molecular signals produced by MSCs. These molecules are active on both ionotropic and metabotropic receptors present in most cell types. MSCs possess a significant display of these receptors and of nucleotide processing ectoenzymes on their plasma membrane. Thus, from their niche, MSCs give a significant contribution to the complex signaling network of eNTPs and its derivatives. Recent studies have demonstrated the multifaceted aspects of eNTP metabolism and their signal transduction in MSCs and revealed important roles in specifying differentiation lineages and modulating MSC physiology and communication with other cells. This review discusses the roles of eNTPs, their receptors and ectoenzymes, and the relevance of the signaling network and MSC functions, and also focuses on the importance of this emerging area of interest for future MSC-based cell therapies.
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25
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Grozio A, Gonzalez VM, Millo E, Sturla L, Vigliarolo T, Bagnasco L, Guida L, D'Arrigo C, De Flora A, Salis A, Martin EM, Bellotti M, Zocchi E. Selection and characterization of single stranded DNA aptamers for the hormone abscisic Acid. Nucleic Acid Ther 2013; 23:322-31. [PMID: 23971905 PMCID: PMC3760064 DOI: 10.1089/nat.2013.0418] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The hormone abscisic acid (ABA) is a small molecule involved in pivotal physiological functions in higher plants. Recently, ABA has been also identified as an endogenous hormone in mammals, regulating different cell functions including inflammatory processes, stem cell expansion, insulin release, and glucose uptake. Aptamers are short, single-stranded (ss) oligonucleotidesable to recognize target molecules with high affinity. The small size of the ABA molecule represented a challenge for aptamer development and the aim of this study was to develop specific anti-ABA DNA aptamers. Biotinylated abscisic acid (bio-ABA) was immobilized on streptavidin-coated magnetic beads. DNA aptamers against bio-ABA were selected with 7 iterative rounds of the systematic evolution of ligands by exponential enrichment method (SELEX), each round comprising incubation of the ABA-binding beads with the ssDNA sequences, DNA elution, electrophoresis, and polymerase chain reaction (PCR) amplification. The PCR product was cloned and sequenced. The binding affinity of several clones was determined using bio-ABA immobilized on streptavidin-coated plates. Aptamer 2 and aptamer 9 showed the highest binding affinity, with dissociation constants values of 0.98 ± 0.14 μM and 0.80 ± 0.07 μM, respectively. Aptamers 2 and 9 were also able to bind free, unmodified ABA and to discriminate between different ABA enantiomers and isomers. Our findings indicate that ssDNA aptamers can selectively bind ABA and could be used for the development of ABA quantitation assays.
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Affiliation(s)
- Alessia Grozio
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Genova, Italy
| | - Victor M. Gonzalez
- Departamento de Bioquímica-Investigación, IRYCIS-Hospital Ramón y Cajal, Madrid, Spain
| | - Enrico Millo
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
| | - Laura Sturla
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
| | - Tiziana Vigliarolo
- Department of Experimental Medicine, Section of Biochemistry, University of Genova, Genova, Italy
| | - Luca Bagnasco
- Department of Internal Medicine, University of Genova, Genova, Italy
| | - Lucrezia Guida
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
| | - Cristina D'Arrigo
- Institute for Macromolecular Studies, National Research Council, Genova, Italy
| | - Antonio De Flora
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
| | - Annalisa Salis
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
| | - Elena M. Martin
- Departamento de Bioquímica-Investigación, IRYCIS-Hospital Ramón y Cajal, Madrid, Spain
| | - Marta Bellotti
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
| | - Elena Zocchi
- Center of Excellence for Biomedical Research (CEBR), University of Genova, Genova, Italy
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Bruzzone S, Guse AH. Cycling assay for determining intracellular cyclic adp-ribose levels. Cold Spring Harb Protoc 2013; 2013:564-8. [PMID: 23734016 DOI: 10.1101/pdb.prot072991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Cyclic ADP-ribose (cADPR) is a Ca(2+)-mobilizing second messenger involved in the regulation of various physiological processes. The ability to detect changes in endogenous cADPR is a fundamental step in the identification of its role in signal transduction triggered by hormones and other stimuli. Because the intracellular concentration of cADPR can be very low, depending on the expression level of the ADP-ribosyl cyclase activity (forming cADPR and nicotinamide from NAD) in the cell type of interest, very sensitive and selective methods are required. The method presented here exploits the ability of the ADP-ribosyl cyclase to catalyze the reverse reaction (i.e., to synthesize NAD stoichiometrically starting from cADPR) in the presence of an excess of nicotinamide. The generation of NAD can be coupled to a cycling assay using the enzymes alcohol dehydrogenase and diaphorase. The former reduces NAD to NADH in the presence of ethanol and the latter oxidizes NADH to NAD in the presence of resazurin and flavin mononucleotide. The formation of the fluorescent reduced resazurin (resofurin) can be detected with a plate reader. Thus, this cycling assay for cADPR determination can be considered a high-throughput method, potentially screening cADPR concentration simultaneously in many samples.
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Affiliation(s)
- Santina Bruzzone
- Department of Experimental Medicine (DIMES), Section of Biochemistry, University of Genova, 16132 Genova, Italy.
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27
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Tossi V, Cassia R, Bruzzone S, Zocchi E, Lamattina L. ABA says NO to UV-B: a universal response? TRENDS IN PLANT SCIENCE 2012; 17:510-7. [PMID: 22698377 DOI: 10.1016/j.tplants.2012.05.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 04/24/2012] [Accepted: 05/03/2012] [Indexed: 05/21/2023]
Abstract
Abscisic acid (ABA) signaling pathways have been widely characterized in plants, whereas the function of ABA in animals is less well understood. However, recent advances show ABA production by a wide range of lower animals and higher mammals. This enables a new evaluation of ABA signaling pathways in different organisms in response to common environmental stress, such as ultraviolet (UV)-B. In this opinion article, we propose that the induction of common signaling components, such as ABA, nitric oxide (NO) and Ca(2+), in plant and animal cells in response to high doses of UV-B, suggests that the evolution of a general mechanism activated by UV-B is conserved in divergent multicellular organisms challenged by a changing common environment.
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Affiliation(s)
- Vanesa Tossi
- Instituto de Investigaciones Biológicas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata, Argentina
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28
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Abscisic acid ameliorates the systemic sclerosis fibroblast phenotype in vitro. Biochem Biophys Res Commun 2012; 422:70-4. [PMID: 22560900 DOI: 10.1016/j.bbrc.2012.04.107] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 04/20/2012] [Indexed: 11/22/2022]
Abstract
The phytohormone abscisic acid (ABA) has been recently identified as an endogenous hormone in humans, regulating different cell functions, including inflammatory processes, insulin release and glucose uptake. Systemic sclerosis (SSc) is a chronic inflammatory disease resulting in fibrosis of skin and internal organs. In this study, we investigated the effect of exogenous ABA on fibroblasts obtained from healthy subjects and from SSc patients. Migration of control fibroblasts induced by ABA was comparable to that induced by transforming growth factor-β (TGF-β). Conversely, migration toward ABA, but not toward TGF-β, was impaired in SSc fibroblasts. In addition, ABA increased cell proliferation in fibroblasts from SSc patients, but not from healthy subjects. Most importantly, presence of ABA significantly decreased collagen deposition by SSc fibroblasts, at the same time increasing matrix metalloproteinase-1 activity and decreasing the expression level of tissue inhibitor of metalloproteinase (TIMP-1). Thus, exogenously added ABA appeared to revert some of the functions altered in SSc fibroblasts to a normal phenotype. Interestingly, ABA levels in plasma from SSc patients were found to be significantly lower than in healthy subjects. UV-B irradiation induced an almost 3-fold increase in ABA content in SSc cultures. Altogether, these results suggest that the fibrotic skin lesions in SSc patients could benefit from exposure to high(er) ABA levels.
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29
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Tao R, Sun HY, Lau CP, Tse HF, Lee HC, Li GR. Cyclic ADP ribose is a novel regulator of intracellular Ca2+ oscillations in human bone marrow mesenchymal stem cells. J Cell Mol Med 2012; 15:2684-96. [PMID: 21251217 PMCID: PMC4373437 DOI: 10.1111/j.1582-4934.2011.01263.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Bone marrow mesenchymal stem cells (MSCs) are a promising cell source for regenerative medicine. However, the cellular biology of these cells is not fully understood. The present study characterizes the cyclic ADP-ribose (cADPR)-mediated Ca(2+) signals in human MSCs and finds that externally applied cADPR can increase the frequency of spontaneous intracellular Ca(2+) (Ca(2+) (i) ) oscillations. The increase was abrogated by a specific cADPR antagonist or an inositol trisphosphate receptor (IP3R) inhibitor, but not by ryanodine. In addition, the cADPR-induced increase of Ca(2+) (i) oscillation frequency was prevented by inhibitors of nucleoside transporter or by inhibitors of the transient receptor potential cation melastatin-2 (TRPM2) channel. RT-PCR revealed mRNAs for the nucleoside transporters, concentrative nucleoside transporters 1/2 and equilibrative nucleoside transporters 1/3, IP3R1/2/3 and the TRPM2 channel, but not those for ryanodine receptors and CD38 in human MSCs. Knockdown of the TRPM2 channel by specific short interference RNA abolished the effect of cADPR on the Ca(2+) (i) oscillation frequency, and prevented the stimulation of proliferation by cADPR. Moreover, cADPR remarkably increased phosphorylated extracellular-signal-regulated kinases 1/2 (ERK1/2), but not Akt or p38 mitogen-activated protein kinase (MAPK). However, cADPR had no effect on adipogenesis or osteogenesis in human MSCs. Our results indicate that cADPR is a novel regulator of Ca(2+) (i) oscillations in human MSCs. It permeates the cell membrane through the nucleoside transporters and increases Ca(2+) oscillation via activation of the TRPM2 channel, resulting in enhanced phosphorylation of ERK1/2 and, thereby, stimulation of human MSC proliferation. This study delineates an alternate signalling pathway of cADPR that is distinct from its well-established role of serving as a Ca(2+) messenger for mobilizing the internal Ca(2+) stores. Whether cADPR can be used clinically for stimulating marrow function in patients with marrow disorders remains to be further studied.
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Affiliation(s)
- Rong Tao
- Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
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30
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Magnone M, Sturla L, Jacchetti E, Scarfì S, Bruzzone S, Usai C, Guida L, Salis A, Damonte G, De Flora A, Zocchi E. Autocrine abscisic acid plays a key role in quartz-induced macrophage activation. FASEB J 2012; 26:1261-1271. [PMID: 22042223 DOI: 10.1096/fj.11-187351] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Inhalation of quartz induces silicosis, a lung disease where alveolar macrophages release inflammatory mediators, including prostaglandin-E(2) (PGE(2)) and tumor necrosis factor α (TNF-α). Here we report the pivotal role of abscisic acid (ABA), a recently discovered human inflammatory hormone, in silica-induced activation of murine RAW264.7 macrophages and of rat alveolar macrophages (AMs). Stimulation of both RAW264.7 cells and AMs with quartz induced a significant increase of ABA release (5- and 10-fold, respectively), compared to untreated cells. In RAW264.7 cells, autocrine ABA released after quartz stimulation sequentially activates the plasma membrane receptor LANCL2 and NADPH oxidase, generating a Ca(2+) influx resulting in NFκ B nuclear translocation and PGE(2) and TNF-α release (3-, 2-, and 3.5-fold increase, respectively, compared to control, unstimulated cells). Quartz-stimulated RAW264.7 cells silenced for LANCL2 or preincubated with a monoclonal antibody against ABA show an almost complete inhibition of NFκ B nuclear translocation and PGE(2) and TNF-α release compared to controls electroporated with a scramble oligonucleotide or preincubated with an unrelated antibody. AMs showed similar early and late ABA-induced responses as RAW264.7 cells. These findings identify ABA and LANCL2 as key mediators in quartz-induced inflammation, providing possible new targets for antisilicotic therapy.
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Affiliation(s)
- Mirko Magnone
- DIMES, Section of Biochemistry, University of Genova, Viale Benedetto XV, 1 16132 Genova, Italy.
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31
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Li HH, Hao RL, Wu SS, Guo PC, Chen CJ, Pan LP, Ni H. Occurrence, function and potential medicinal applications of the phytohormone abscisic acid in animals and humans. Biochem Pharmacol 2011; 82:701-12. [DOI: 10.1016/j.bcp.2011.06.042] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Revised: 06/30/2011] [Accepted: 06/30/2011] [Indexed: 01/22/2023]
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32
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Takezawa D, Komatsu K, Sakata Y. ABA in bryophytes: how a universal growth regulator in life became a plant hormone? JOURNAL OF PLANT RESEARCH 2011; 124:437-53. [PMID: 21416316 DOI: 10.1007/s10265-011-0410-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 02/11/2011] [Indexed: 05/03/2023]
Abstract
Abscisic acid (ABA) is not a plant-specific compound but one found in organisms across kingdoms from bacteria to animals, suggesting that it is a ubiquitous and versatile substance that can modulate physiological functions of various organisms. Recent studies have shown that plants developed an elegant system for ABA sensing and early signal transduction mechanisms to modulate responses to environmental stresses for survival in terrestrial conditions. ABA-induced increase in stress tolerance has been reported not only in vascular plants but also in non-vascular bryophytes. Since bryophytes are the key group of organisms in the context of plant evolution, clarification of their ABA-dependent processes is important for understanding evolutionary adaptation of land plants. Molecular approaches using Physcomitrella patens have revealed that ABA plays a role in dehydration stress tolerance in mosses, which comprise a major group of bryophytes. Furthermore, we recently reported that signaling machinery for ABA responses is also conserved in liverworts, representing the most basal members of extant land plant lineage. Conservation of the mechanism for ABA sensing and responses in angiosperms and basal land plants suggests that acquisition of this mechanism for stress tolerance in vegetative tissues was one of the critical evolutionary events for adaptation to the land. This review describes the role of ABA in basal land plants as well as non-land plant organisms and further elaborates on recent progress in molecular studies of model bryophytes by comparative and functional genomic approaches.
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Affiliation(s)
- Daisuke Takezawa
- Graduate School of Science and Engineering, Institute for Environmental Science and Technology, Saitama University, Saitama 338-8570, Japan.
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33
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Fruscione F, Scarfì S, Ferraris C, Bruzzone S, Benvenuto F, Guida L, Uccelli A, Salis A, Usai C, Jacchetti E, Ilengo C, Scaglione S, Quarto R, Zocchi E, De Flora A. Regulation of human mesenchymal stem cell functions by an autocrine loop involving NAD+ release and P2Y11-mediated signaling. Stem Cells Dev 2010; 20:1183-98. [PMID: 20964598 DOI: 10.1089/scd.2010.0295] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In several cell types, a regulated efflux of NAD(+) across Connexin 43 hemichannels (Cx43 HC) can occur, and extracellular NAD(+) (NAD(+)(e)) affects cell-specific functions. We studied the capability of bone marrow-derived human mesenchymal stem cells (MSC) to release intracellular NAD(+) through Cx43 HC. NAD(+) efflux, quantified by a sensitive enzymatic cycling assay, was significantly upregulated by low extracellular Ca(2+) (5-6-fold), by shear stress (13-fold), and by inflammatory conditions (3.1- and 2.5-fold in cells incubated with lipopolysaccharide (LPS) or at 39°C, respectively), as compared with untreated cells, whereas it was downregulated in Cx43-siRNA-transfected MSC (by 53%) and by cell-to-cell contact (by 45%). Further, we show that NAD(+)(e) activates the purinergic receptor P2Y(11) and a cyclic adenosin monophosphate (cAMP)/cyclic ADP-ribose/[Ca(2+)](i) signaling cascade, involving the opening, unique to MSC, of L-type Ca(2+) channels. Extracellular NAD(+) enhanced nuclear translocation of cAMP/Ca(2+)-dependent transcription factors. Moreover, NAD(+), either extracellularly added or autocrinally released, resulted in stimulation of MSC functions, including proliferation, migration, release of prostaglandin E(2) and cytokines, and downregulation of T lymphocyte proliferation compared with controls. No detectable modifications of MSC markers and of adipocyte or osteocyte differentiation were induced by NAD(+)(e). Controls included Cx43-siRNA transfected and/or NAD(+)-glycohydrolase-treated MSC (autocrine effects), and NAD(+)-untreated or P2Y(11)-siRNA-transfected MSC (exogenous NAD(+)). These findings suggest a potential beneficial role of NAD(+)(e) in modulating MSC functions relevant to MSC-based cell therapies.
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