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Dos Santos BL, Dos Santos CC, da Silva KC, Nonaka CKV, Souza BSDF, David JM, de Oliveira JVR, Costa MDFD, Butt AM, da Silva VDA, Costa SL. The Phytochemical Agathisflavone Modulates miR146a and miR155 in Activated Microglia Involving STAT3 Signaling. Int J Mol Sci 2024; 25:2547. [PMID: 38473794 DOI: 10.3390/ijms25052547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/23/2024] [Accepted: 02/06/2024] [Indexed: 03/14/2024] Open
Abstract
MicroRNAs (miRs) act as important post-transcriptional regulators of gene expression in glial cells and have been shown to be involved in the pathogenesis of neurodegenerative diseases, including Alzheimer's disease (AD). Here, we investigated the effects of agathisflavone, a biflavonoid purified from the leaves of Cenostigma pyramidale (Tul.), on modulating the expression of miRs and inflammatory mediators in activated microglia. C20 human microglia were exposed to oligomers of the β-amyloid peptide (Aβ, 500 nM) for 4 h or to lipopolysaccharide (LPS, 1 µg/mL) for 24 h and then treated or not with agathisflavone (1 µM) for 24 h. We observed that β-amyloid and LPS activated microglia to an inflammatory state, with increased expression of miR-146a, miR-155, IL1-β, IL-6, and NOS2. Treatment with agathisflavone resulted in a significant reduction in miR146a and miR-155 induced by LPS or Aβ, as well as inflammatory cytokines IL1-β, IL-6, and NOS2. In cells stimulated with Aβ, there was an increase in p-STAT3 expression that was reduced by agathisflavone treatment. These data identify a role for miRs in the anti-inflammatory effect of agathisflavone on microglia in models of neuroinflammation and AD.
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Affiliation(s)
- Balbino Lino Dos Santos
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
- College of Nursing, Federal University of Vale do São Francisco, Av. José de Sá Maniçoba, S/N, Petrolina 56304-917, PE, Brazil
| | - Cleonice Creusa Dos Santos
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Karina Costa da Silva
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Carolina Kymie Vasques Nonaka
- Center of Biotechnology and Cell Therapy, São Rafael Hospital, D'Or Institute for Research and Teaching (IDOR), Salvador 41253-190, BA, Brazil
| | - Bruno Solano de Freitas Souza
- Center of Biotechnology and Cell Therapy, São Rafael Hospital, D'Or Institute for Research and Teaching (IDOR), Salvador 41253-190, BA, Brazil
- Instituto Gonçalo Moniz, Fundação Oswaldo Cruz (FIOCRUZ), Salvador 40296-710, BA, Brazil
| | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, Salvador 40231-300, BA, Brazil
| | - Juciele Valéria Ribeiro de Oliveira
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Maria de Fátima Dias Costa
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
- National Institute of Translational Neuroscience (INNT), Rio de Janeiro 21941-971, RJ, Brazil
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK
| | - Victor Diogenes Amaral da Silva
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
| | - Silvia Lima Costa
- Laboratory of Neurochemistry and Cellular Biology, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon S/N, Salvador 40231-300, BA, Brazil
- National Institute of Translational Neuroscience (INNT), Rio de Janeiro 21941-971, RJ, Brazil
- Instituto de Ciências da Saúde, Av. Reitor Miguel Calmon S/N Vale do Canela, Salvador 40110-902, BA, Brazil
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Fukuyama Y, Kubo M, Harada K. Neurotrophic Natural Products. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2024; 123:1-473. [PMID: 38340248 DOI: 10.1007/978-3-031-42422-9_1] [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: 02/12/2024]
Abstract
Neurotrophins (NGF, BDNF, NT3, NT4) can decrease cell death, induce differentiation, as well as sustain the structure and function of neurons, which make them promising therapeutic agents for the treatment of neurodegenerative disorders. However, neurotrophins have not been very effective in clinical trials mostly because they cannot pass through the blood-brain barrier owing to being high-molecular-weight proteins. Thus, neurotrophin-mimic small molecules, which stimulate the synthesis of endogenous neurotrophins or enhance neurotrophic actions, may serve as promising alternatives to neurotrophins. Small-molecular-weight natural products, which have been used in dietary functional foods or in traditional medicines over the course of human history, have a great potential for the development of new therapeutic agents against neurodegenerative diseases such as Alzheimer's disease. In this contribution, a variety of natural products possessing neurotrophic properties such as neurogenesis, neurite outgrowth promotion (neuritogenesis), and neuroprotection are described, and a focus is made on the chemistry and biology of several neurotrophic natural products.
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Affiliation(s)
- Yoshiyasu Fukuyama
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan.
| | - Miwa Kubo
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
| | - Kenichi Harada
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima, 770-8514, Japan
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Naewla S, Prajit R, Sritawan N, Suwannakot K, Sirichoat A, Aranarochana A, Wigmore P, Welbat JU. Hesperidin ameliorates impairment in hippocampal neural stem cells related to apoptosis induced by methotrexate in adult rats. Biomed Pharmacother 2023; 166:115329. [PMID: 37597319 DOI: 10.1016/j.biopha.2023.115329] [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: 06/07/2023] [Revised: 08/05/2023] [Accepted: 08/12/2023] [Indexed: 08/21/2023] Open
Abstract
Neurogenesis is a process of generating neural stem cells (NSCs) as functional neurons can be decreased after chemotherapy treatments. Methotrexate (MTX) is a folate antagonist that is used for cancer treatment but has negative effects, including oxidative stress, neuronal apoptosis and cognitive impairments. Hesperidin (Hsd), a flavonoid found in citrus fruits, has antioxidant and neuroprotection properties. This study investigated whether Hsd could attenuate impairments of hippocampal neural stem cells related to apoptosis induced by MTX. Spraque-Dawley rats (n = 24) were divided into 4 groups: (1) Vehicle group received propylene glycol (21 days) and 0.9% normal saline (day 8 and 15), (2) Hsd group received 100 mg/kg (21 days), (3) MTX group received 75 mg/kg (days 8 and 15) and (4) MTX+Hsd group received MTX, 75 mg/kg (day 8 and 15) and Hsd 100 mg/kg (21 days). Our results showed that MTX decreased hippocampal neural stem cells including SRY (sex determining region Y)-box 2 (SOX2) and nestin. MTX diminished vascular related (VR) Ki-67 positive cells in the hippocampus but not non-vascular related (NVR) Ki-67. Additionally, MTX reduced SOX2, nestin, postsynaptic density protein 95 (PSD-95) and B-cell lymphoma-2 family of proteins (Bcl-2), whereas Bax and caspase-3 were enhanced in the hippocampal tissues. Interestingly, co-treatment with Hsd and MTX revealed upregulation of SOX2, nestin and VR Ki-67 positive cells as well as elevated SOX2, nestin, PSD-95 and Bcl-2 proteins. Moreover, receiving both Hsd and MTX significantly suppressed increased Bax and caspase-3. These results confirm that Hsd can ameliorate MTX-induced impairments of hippocampal NSC proliferation and neuronal apoptosis.
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Affiliation(s)
- Salinee Naewla
- Department of Basic Medical Science, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Ram Prajit
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Nataya Sritawan
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Kornrawee Suwannakot
- Department of Basic Medical Science, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Apiwat Sirichoat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Anusara Aranarochana
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Peter Wigmore
- Queen's Medical Centre, School of Life Sciences, Medical School, University of Nottingham, Nottingham NG7 2RD, UK
| | - Jariya Umka Welbat
- Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Neurogenesis Research Group, Department of Anatomy, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
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Frota LS, da Rocha MN, Bezerra LL, da Fonseca AM, Marinho ES, de Morais SM. HIF1 inhibition of the biflavonoids against pancreas cancer: drug-likeness, bioavailability, ADMET, PASS, molecular docking, molecular dynamics, and MM/GBSA calculations. J Biomol Struct Dyn 2022:1-12. [PMID: 36002285 DOI: 10.1080/07391102.2022.2112619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Pancreatic cancer is an aggressive disease with a high death rate and is difficult to treat. This disease, in the most cases, is asymptomatic until it progresses to an advanced stage. Therefore, the search for bioactive molecules is urgent to combat pancreatic cancer. Then, this work analyzed the interaction potential of agathisflavone and amentoflavone molecules against the HIF1 target using the ADMET, molecular docking, and molecular dynamics simulations. More recent drug-likeness filters that combine physicochemical and physiological parameters have shown that high polar surface area (TPSA > 75 Å2) drives biflavonoids out of the toxic drug space of Pfizer dataset. Regarding the pharmacokinetic descriptors, it was possible to notice that Amentoflavone showed a better order of passive cell permeability (Papp = 8 × 10-6 cm/s) and better metabolic stability, biotransformed by aromatic hydroxylation reactions by the CYP3A4 isoenzyme on the human liver, that favor its hepatic clearance. The molecular docking and molecular dynamics simulations indicated the high interaction potential and stability between the ligands analyzed (highlighted the amentoflavone molecule), respectively. The MM/GBSA calculations showed that the amentoflavone ligand registered the highest ΔG binding value of -32.6957 kcal/mol with the HIF1 target. Then, this molecule may be used as a potential inhibitor of pancreatic cancer. In this perspective, the present work represents an initial step in the virtual bioprospecting a pharmacological tool for treating of pancreatic cancer.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Lucas Soares Frota
- Graduate Program in Biotechnology, Northeast Biotechnology Network, Faculty of Veterinary Medicine, State University of Ceará, Campus do Itaperi, Fortaleza , Ceara, Brazil
| | - Matheus Nunes da Rocha
- Group of Theoretical Chemistry and Electrochemistry, Faculty of Philosophy Dom Aureliano Matos, State University of Ceara, Limoeiro do Norte, Ceará, Brazil
| | - Lucas Lima Bezerra
- Group of Theoretical Chemistry and Electrochemistry, Faculty of Philosophy Dom Aureliano Matos, State University of Ceara, Limoeiro do Norte, Ceará, Brazil
| | - Aluísio Marques da Fonseca
- Academic Master in Sociobiodiversity and Sustainable Technologies, Institute of Engineering and Sustainable Development, University of International Integration of Afro-Brazilian Lusophony, Auroras Campus, Redenção, CE, Brazil
| | - Emmanuel Silva Marinho
- Group of Theoretical Chemistry and Electrochemistry, Faculty of Philosophy Dom Aureliano Matos, State University of Ceara, Limoeiro do Norte, Ceará, Brazil
| | - Selene Maia de Morais
- Chemistry Course, Science and Technology Center, State University of Ceará, Itaperi Campus, 60714-903, Fortaleza, Ceará, Brazil
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de Almeida MMA, Pieropan F, Footz T, David JM, David JP, da Silva VDA, Dos Santos Souza C, Voronova A, Butt AM, Costa SL. Agathisflavone Modifies Microglial Activation State and Myelination in Organotypic Cerebellar Slices Culture. J Neuroimmune Pharmacol 2022; 17:206-217. [PMID: 33881709 DOI: 10.1007/s11481-021-09991-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 03/10/2021] [Indexed: 12/29/2022]
Abstract
Oligodendrocytes produce the myelin that is critical for rapid neuronal transmission in the central nervous system (CNS). Disruption of myelin has devastating effects on CNS function, as in the demyelinating disease multiple sclerosis (MS). Microglia are the endogenous immune cells of the CNS and play a central role in demyelination and repair. There is a need for new potential therapies that regulate myelination and microglia to promote repair. Agathisflavone (FAB) is a non-toxic flavonoid that is known for its anti-inflammatory and neuroprotective properties. Here, we examined the effects of FAB (5-50 μM) on myelination and microglia in organotypic cerebellar slices prepared from P10-P12 Sox10-EGFP and Plp1-DsRed transgenic mice. Immunofluorescence labeling for myelin basic protein (MBP) and neurofilament (NF) demonstrates that FAB significantly increased the proportion of MBP + /NF + axons but did not affect the overall number of oligodendroglia or axons, or the expression of oligodendroglial proteins CNPase and MBP. FAB is known to be a phytoestrogen, but blockade of α- or β- estrogen receptors (ER) indicated the myelination promoting effects of FAB were not mediated by ER. Examination of microglial responses by Iba1 immunohistochemistry demonstrated that FAB markedly altered microglial morphology, characterized by smaller somata and reduced branching of their processes, consistent with a decreased state of activation, and increased Iba1 protein expression. The results provide evidence that FAB increases the extent of axonal coverage by MBP immunopositive oligodendroglial processes and has a modulatory effect upon microglial cells, which are important therapeutic strategies in multiple neuropathologies.
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Affiliation(s)
- Monique Marylin Alves de Almeida
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Bahia, Brazil
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth, UK
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Francesca Pieropan
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth, UK
| | - Tim Footz
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, Bahia, Brazil
| | - Juceni Pereira David
- Department of Medication, Faculty of Pharmacy, Federal University of Bahia, Bahia, Brazil
| | | | - Cleide Dos Santos Souza
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Bahia, Brazil
- Sheffield Institute for Translational Neuroscience, University of Sheffield, Sheffield, UK
| | - Anastassia Voronova
- Department of Medical Genetics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Science, University of Portsmouth, Portsmouth, UK.
| | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Bahia, Brazil.
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do Nascimento RP, de Jesus LB, Oliveira-Junior MS, Almeida AM, Moreira ELT, Paredes BD, David JM, Souza BSF, de Fátima D Costa M, Butt AM, Silva VDA, Costa SL. Agathisflavone as a Single Therapy or in Association With Mesenchymal Stem Cells Improves Tissue Repair in a Spinal Cord Injury Model in Rats. Front Pharmacol 2022; 13:858190. [PMID: 35479309 PMCID: PMC9037239 DOI: 10.3389/fphar.2022.858190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/28/2022] [Indexed: 12/17/2022] Open
Abstract
Agathisflavone is a flavonoid with anti-neuroinflammatory and myelinogenic properties, being also capable to induce neurogenesis. This study evaluated the therapeutic effects of agathisflavone—both as a pharmacological therapy administered in vivo and as an in vitro pre-treatment aiming to enhance rat mesenchymal stem cells (r)MSCs properties–in a rat model of acute spinal cord injury (SCI). Adult male Wistar rats (n = 6/group) underwent acute SCI with an F-2 Fogarty catheter and after 4 h were treated daily with agathisflavone (10 mg/kg ip, for 7 days), or administered with a single i.v. dose of 1 × 106 rMSCs either unstimulated cells (control) or pretreated with agathisflavone (1 µM, every 2 days, for 21 days in vitro). Control rats (n = 6/group) were treated with a single dose methylprednisolone (MP, 60 mg/kg ip). BBB scale was used to evaluate the motor functions of the animals; after 7 days of treatment, the SCI area was analyzed after H&E staining, and RT-qPCR was performed to analyze the expression of neurotrophins and arginase. Treatment with agathisflavone alone or with of 21-day agathisflavone–treated rMSCs was able to protect the injured spinal cord tissue, being associated with increased expression of NGF, GDNF and arginase, and reduced macrophage infiltrate. In addition, treatment of animals with agathisflavone alone was able to protect injured spinal cord tissue and to increase expression of neurotrophins, modulating the inflammatory response. These results support a pro-regenerative effect of agathisflavone that holds developmental potential for clinical applications in the future.
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Affiliation(s)
- Ravena P do Nascimento
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil
| | - Lívia B de Jesus
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil
| | - Markley S Oliveira-Junior
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil
| | - Aurea M Almeida
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil
| | - Eduardo L T Moreira
- Department of Anatomy, Pathology and Veterinary Clinics, Hospital of Veterinary Medicine, Federal University of Bahia, Salvador, Brazil
| | - Bruno D Paredes
- Center for Biotechnology and Cell Therapy, São Rafael Hospital, D'Or Institute for Research and Education, Salvador, Brazil
| | - Jorge M David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, Salvador, Brazil
| | - Bruno S F Souza
- Center for Biotechnology and Cell Therapy, São Rafael Hospital, D'Or Institute for Research and Education, Salvador, Brazil.,Gonçalo Moniz Institute, FIOCRUZ-BA, Salvador, Brazil
| | - Maria de Fátima D Costa
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil.,INCT-Translational Neuroscience (INCT-TN, BR), Salvador, Brazil
| | - Arthur M Butt
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, United Kingdom
| | - Victor Diogenes A Silva
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil.,INCT for Excitotoxicity and Neuroprotection (INCT-EN, BR), Salvador, Brazil
| | - Silvia L Costa
- Laboratory of Neurochemistry of Cellular Biology, Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Brazil.,Gonçalo Moniz Institute, FIOCRUZ-BA, Salvador, Brazil.,INCT for Excitotoxicity and Neuroprotection (INCT-EN, BR), Salvador, Brazil
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7
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Bastos EMS, da Silva VDA, Costa SL, Hanna SA. Technological Maturity and Systematic Review of Medicinal Plants with Pharmacological Activity in the Central Nervous System. Recent Pat Biotechnol 2021; 15:89-101. [PMID: 33726659 DOI: 10.2174/1872208315666210316110915] [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: 09/30/2020] [Revised: 12/30/2020] [Accepted: 02/09/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Medicinal plants present activities against neurodegenerative diseases with potential for the pharmaceutical industries. Therefore, the objective of this study was to investigate the current panorama of patents and articles of Brazilian medicinal plants with pharmacological activities in the Central Nervous System (CNS), regarding such aspects as the number of patents by countries, areas of knowledge, and technological maturity. METHODS We carry out a technological exploration on the Questel Orbit® platform with the descriptors: Agave sisalana P., Amburana cearenses A., Dimorphandra mollis B., Jatropha curcas L., Poincianella pyramidalis T. and Prosopis juliflora (Sw.) DC. with pharmacological activity and scientific exploration in PubMed and Science Direct associated with the CNS in the title, abstract, and methodology. RESULTS A total of 642 patents were identified between the years 1999-2019. India, China, and Brazil are highlighted, 6th place, out of a total of 48 countries. Of these, 30 patents were not in the National Institute of Industrial Property, and 10% are Brazilian in biotechnology and pharmaceutical products. Eleven articles were used in PubMed and Science Direct with scientific domains (anticancer, neuroprotection and anti-inflammatory). The Federal University of Bahia is highlighted, showing Technology Readiness Levels (TRL4), basic skills of pre-clinical research. CONCLUSION Brazilian public universities have a significant role in the scientific, technological and innovative development of therapeutic assets for CNS.
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Affiliation(s)
- Eduardo M S Bastos
- Postgraduate Program in Intellectual Property and Technology Transfer for Innovation, PROFNIT, Institute of Chemistry, Federal University of Bahia, Campus de Ondina, 40170-290 Salvador, Bahia, Brazil
| | - Victor D A da Silva
- Bio-function Department, Neurochemistry and Cell Biology Laboratory, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Silvia L Costa
- Bio-function Department, Neurochemistry and Cell Biology Laboratory, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Samira A Hanna
- Biointeraction Sciences Department, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, Brazil
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8
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Nascimento RP, Dos Santos BL, da Silva KC, Amaral da Silva VD, de Fátima Costa M, David JM, David JP, Moura-Neto V, Oliveira MDN, Ulrich H, de Faria Lopes GP, Costa SL. Reverted effect of mesenchymal stem cells in glioblastoma treated with agathisflavone and its selective antitumoral effect on cell viability, migration, and differentiation via STAT3. J Cell Physiol 2020; 236:5022-5035. [PMID: 33368262 DOI: 10.1002/jcp.30209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 11/02/2020] [Accepted: 11/26/2020] [Indexed: 12/17/2022]
Abstract
Glioblastoma is the most lethal tumor of the central nervous system, presenting a very poor prognostic, with a survival around 16 months. The interaction of mesenchymal stem cells and tumor cells has been studied, showing a bias in their role favoring or going against aggressiveness. Natural products such as flavonoids have showed their anticancer properties and the synergic potential with the activation of microenvironment cells to inhibit tumor progression. Agathisflavone is a flavonoid studied in neurodegenerative diseases and cancer. The present study investigated the effect of flavonoid in the viability of heterogeneous glioblastoma (GBM) cells considering a coculture or conditioned medium of mesenchymal stem cells (MSCs) effect, as well as the dose-dependent effect of this flavonoid in tumor migration and differentiation via STAT3. Agathisflavone (3-10 μM) induced dose-dependent toxicity to GL-15 and U373 human GBM cells, since 24 h after treatments. It was not toxic to human MSC but modified the pattern of interaction with GBM cells. Agathisflavone also inhibited migration and increased differentiation of human GBM cells, associated with the reduction on the expression of STAT3. These results demonstrate that the flavonoid agathisflavone had a direct anti-glioma effect. However, could be observed its effect in MSCs response that may have an impact in controlling GBM growth and aggressiveness, an important factor to consider for new therapies.
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Affiliation(s)
- Ravena P Nascimento
- Department of Biochemistry and Biophysics, Laboratory of Neurochemistry and Cell Biology, Federal University of Bahia, Salvador, Bahia, Brazil.,Post-graduate Program in Biotechnology, State University of de Feira de Santana - UEFS, Feira de Santana, Bahia, Brazil
| | - Balbino L Dos Santos
- Department of Biochemistry and Biophysics, Laboratory of Neurochemistry and Cell Biology, Federal University of Bahia, Salvador, Bahia, Brazil.,Federal University of Vale do São Francisco, Petrolina, Brazil
| | - Karina C da Silva
- Department of Biochemistry and Biophysics, Laboratory of Neurochemistry and Cell Biology, Federal University of Bahia, Salvador, Bahia, Brazil
| | - Victor D Amaral da Silva
- Department of Biochemistry and Biophysics, Laboratory of Neurochemistry and Cell Biology, Federal University of Bahia, Salvador, Bahia, Brazil.,INCT/CNPq-Neurociência Translacional (INNT), Rio de Janeiro, Brazil
| | - Maria de Fátima Costa
- Department of Biochemistry and Biophysics, Laboratory of Neurochemistry and Cell Biology, Federal University of Bahia, Salvador, Bahia, Brazil.,INCT/CNPq-Neurociência Translacional (INNT), Rio de Janeiro, Brazil
| | - Jorge M David
- Department of General and Inorganic Chemistry, Federal University of Bahia, Bahia, Brazil
| | - Juceni P David
- Department of Medication, Faculty of Pharmacy, Federal University of Bahia, Brazil
| | - Vivaldo Moura-Neto
- INCT/CNPq-Neurociência Translacional (INNT), Rio de Janeiro, Brazil.,State Institute of the Brain Paulo Niemeyer, Rio de Janeiro, Brazil
| | - Mona das N Oliveira
- Department Of Biochemistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Henning Ulrich
- Department Of Biochemistry, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Giselle P de Faria Lopes
- Department of Marine Biotechnology, Institute of Sea Studies Admiral Paulo Moreira (IEAPM), Rio de Janeiro and Research Coordination, Brazilian National Cancer Institute (INCA), Rio de Janeiro, Brazil
| | - Silvia L Costa
- Department of Biochemistry and Biophysics, Laboratory of Neurochemistry and Cell Biology, Federal University of Bahia, Salvador, Bahia, Brazil.,INCT/CNPq-Neurociência Translacional (INNT), Rio de Janeiro, Brazil
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9
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de Almeida MMA, Pieropan F, de Mattos Oliveira L, Dos Santos Junior MC, David JM, David JP, da Silva VDA, Dos Santos Souza C, Costa SL, Butt AM. The flavonoid agathisflavone modulates the microglial neuroinflammatory response and enhances remyelination. Pharmacol Res 2020; 159:104997. [PMID: 32534098 PMCID: PMC7482432 DOI: 10.1016/j.phrs.2020.104997] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 05/27/2020] [Accepted: 06/03/2020] [Indexed: 12/20/2022]
Abstract
Myelin loss is the hallmark of the demyelinating disease multiple sclerosis (MS) and plays a significant role in multiple neurodegenerative diseases. A common factor in all neuropathologies is the central role of microglia, the intrinsic immune cells of the central nervous system (CNS). Microglia are activated in pathology and can have both pro- and anti-inflammatory functions. Here, we examined the effects of the flavonoid agathisflavone on microglia and remyelination in the cerebellar slice model following lysolecithin induced demyelination. Notably, agathisflavone enhances remyelination and alters microglial activation state, as determined by their morphology and cytokine profile. Furthermore, these effects of agathisflavone on remyelination and microglial activation were inhibited by blockade of estrogen receptor α. Thus, our results identify agathisflavone as a novel compound that may act via ER to regulate microglial activation and enhance remyelination and repair.
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Affiliation(s)
- Monique Marylin Alves de Almeida
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil; School of Pharmacy and Biomedical Sciences, University of Portsmouth, United Kingdom
| | - Francesca Pieropan
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, United Kingdom
| | | | | | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, Brazil
| | - Juceni Pereira David
- Department of Medication, Faculty of Pharmacy, Federal University of Bahia, Brazil
| | - Victor Diógenes A da Silva
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil
| | - Cleide Dos Santos Souza
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil; Sheffield Institute for Translational Neuroscience, University of Sheffield, United Kingdom
| | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Brazil.
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, United Kingdom.
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Amburana cearensis: Pharmacological and Neuroprotective Effects of Its Compounds. Molecules 2020; 25:molecules25153394. [PMID: 32726999 PMCID: PMC7435960 DOI: 10.3390/molecules25153394] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 07/16/2020] [Accepted: 07/23/2020] [Indexed: 12/11/2022] Open
Abstract
Amburana cearensis A.C. Smith is an endemic tree from Northeastern Brazil used in folk medicine as teas, decocts and syrups for the treatment of various respiratory and inflammatory diseases, since therapeutic properties have been attributed to compounds from its stem bark and seeds. Numerous pharmacological properties of semi-purified extracts and isolated compounds from A. cearensis have been described in several biological systems, ranging from antimicrobial to anti-inflammatory effects. Some of these activities are attributed to coumarins and phenolic compounds, the major compounds present in A. cearensis seed extracts. Multiple lines of research demonstrate these compounds reduce oxidative stress, inflammation and neuronal death induced by glutamate excitotoxicity, events central to most neuropathologies, including Alzheimer’s disease (AD) and Parkinson’s Disease (PD). This review focuses on the botanical aspects, folk medicine use, biological effects and pharmacological activities of A. cearensis compounds and their potential as novel non-toxic drugs for the treatment of neurodegenerative diseases.
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11
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de Amorim VCM, Júnior MSO, da Silva AB, David JM, David JPL, de Fátima Dias Costa M, Butt AM, da Silva VDA, Costa SL. Agathisflavone modulates astrocytic responses and increases the population of neurons in an in vitro model of traumatic brain injury. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1921-1930. [PMID: 32444988 DOI: 10.1007/s00210-020-01905-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 05/10/2020] [Indexed: 12/20/2022]
Abstract
Traumatic brain injury (TBI) is a critical health problem worldwide, with a high incidence rate and potentially severe long-term consequences. Depending on the level of mechanical stress, astrocytes react with complex morphological and functional changes known as reactive astrogliosis. In cases of severe tissue injury, astrocytes proliferate in the area immediately adjacent to the lesion to form the glial scar, which is a major barrier to neuronal regeneration in the central nervous system. The flavonoid agathisflavone has been shown to have neuroprotective, neurogenic, and immunomodulatory effects and could have beneficial effects in situations of TBI. In this study, we investigated the effects of agathisflavone on modulating the responses of astrocytes and neurons to injury, using the in vitro scratch wound model of TBI in primary cultures of rat cerebral cortex. In control conditions, the scratch wound induced an astroglial injury response, characterized by upregulation of glial fibrillary acidic protein (GFAP) and hypertrophy, together with the reduction in proportion of neurons within the lesion site. Treatment with agathisflavone (1 μM) decreased astroglial GFAP expression and hypertrophy and induced an increase in the number of neurons and neurite outgrowth into the lesion site. Agathisflavone also induced increased expression of the neurotrophic factors NGF and GDNF, which are associated with the neuroprotective profile of glial cells. These results demonstrate that in an in vitro model of TBI, the flavonoid agathisflavone modulates the astrocytic injury response and glial scar formation, stimulating neural recomposition.
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Affiliation(s)
- Vanessa Cristina Meira de Amorim
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Markley Silva Oliveira Júnior
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Alessandra Bispo da Silva
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Jorge M David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, R. Barão de Jeremoabo, Salvador, BA, 40170-115, Brazil
| | - Juceni Pereira Lima David
- Department of Medication, Faculty of Pharmacy, Federal University of Bahia, R. Barão de Jeremoabo, Salvador, BA, 40170-115, Brazil
| | - Maria de Fátima Dias Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Science, University of Portsmouth, Winston Churchill Avenue, Portsmouth, PO1 2UP, UK
| | - Victor Diogenes Amaral da Silva
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil.
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12
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Phytoestrogen Agathisflavone Ameliorates Neuroinflammation-Induced by LPS and IL-1β and Protects Neurons in Cocultures of Glia/Neurons. Biomolecules 2020; 10:biom10040562. [PMID: 32272581 PMCID: PMC7225953 DOI: 10.3390/biom10040562] [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: 02/12/2020] [Revised: 02/27/2020] [Accepted: 02/27/2020] [Indexed: 12/27/2022] Open
Abstract
Inflammation and oxidative stress are common aspects of most neurodegenerative diseases in the central nervous system. In this context, microglia and astrocytes are central to mediating the balance between neuroprotective and neurodestructive mechanisms. Flavonoids have potent anti-inflammatory and antioxidant properties. Here, we have examined the anti-inflammatory and neuroprotective potential of the flavonoid agathisflavone (FAB), which is derived from the Brazilian plant Poincianella pyramidalis, in in vitro models of neuroinflammation. Cocultures of neurons/glial cells were exposed to lipopolysaccharide (LPS, 1 µg/mL) or interleukin (IL)-1β (10 ng/mL) for 24 h and treated with FAB (0.1 and 1 µM, 24 h). FAB displayed a significant neuroprotective effect, as measured by nitric oxide (NO) production, Fluoro-Jade B (FJ-B) staining, and immunocytochemistry (ICC) for the neuronal marker β-tubulin and the cell death marker caspase-3, preserving neuronal soma and increasing neurite outgrowth. FAB significantly decreased the LPS-induced microglial proliferation, identified by ICC for Iba-1/bromodeoxyuridine (BrdU) and CD68 (microglia M1 profile marker). In contrast, FAB had no apparent effect on astrocytes, as determined by ICC for glial fibrillary acidic protein (GFAP). Furthermore, FAB protected against the cytodestructive and proinflammatory effects of IL-1β, a key cytokine that is released by activated microglia and astrocytes, and ICC showed that combined treatment of FAB with α and β estrogen receptor antagonists did not affect NF-κB expression. In addition, qPCR analysis demonstrated that FAB decreased the expression of proinflammatory molecules TNF-α, IL-1β, and connexins CCL5 and CCL2, as well as increased the expression of the regulatory molecule IL-10. Together, these findings indicate that FAB has a significant neuroprotective and anti-inflammatory effect in vitro, which may be considered as an adjuvant for the treatment of neurodegenerative diseases.
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13
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The influence of exogenous methyl jasmonate on the germination and, content and composition of flavonoids in extracts from seedlings of yellow and narrow-leafed lupine. J Food Compost Anal 2020. [DOI: 10.1016/j.jfca.2019.103398] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Dumitru G, El-Nashar HAS, Mostafa NM, Eldahshan OA, Boiangiu RS, Todirascu-Ciornea E, Hritcu L, Singab ANB. Agathisflavone isolated from Schinus polygamus (Cav.) Cabrera leaves prevents scopolamine-induced memory impairment and brain oxidative stress in zebrafish (Danio rerio). PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 58:152889. [PMID: 30901660 DOI: 10.1016/j.phymed.2019.152889] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 03/10/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Agathisflavone, a biflavonoid isolated from Schinus polygamus (Cav.) Cabrera leaves been reported to promote various biological activities such as anti-inflammatory properties, promoting cognition and preventing cancer, antioxidant and antiapoptotic activities. PURPOSE Here, we tested the hypothesis whether anxiety, amnesia, and brain oxidative stress induced by scopolamine could be counteracted in zebrafish model by agathisflavone and tried to ascertain the underlying mechanism. METHODS Agathisflavone (1, 3 and 5 µg/l) was administered by immersion to zebrafish once daily for 8 days period. Anxiety and memory impairment were induced with scopolamine (100 µM) and measured with the novel tank diving test (NTT) and the Y-maze test. Zebrafish were divided into seven groups (n = 20/group): first group - control, second group - scopolamine (100 μM), the third, fourth and fifth group - agathisflavone treatment groups (FAB, 1 µg/l, 3 µg/l, and 5 µg/l), the sixth group - imipramine (IMP, 20 mg/l, as the positive control in NTT test), and the seventh group - donepezil group (DP, 10 mg/l, as the positive control in Y-maze test). The identification of the agathisflavone was done by spectroscopy, and the structure of the compound was confirmed by (-) Electrospray Ionisation Mass Spectrometry (ESI-MS). The brain oxidative status and acetylcholinesterase (AChE) activity were also investigated. RESULTS Agathisflavone from Schinus polygamus (Cav.) Cabrera leaves was identified. Also, we demonstrated that agathisflavone significantly reversed scopolamine-induced behavioral score alteration in the NTT and Y-maze tests. Consequently, agathisflavone promoted inhibition of AChE activity and restored the brain antioxidant status. CONCLUSION Our results demonstrate that agathisflavone promotes brain antioxidant action and ameliorates scopolamine-induced anxiety and memory deficits in zebrafish.
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Affiliation(s)
- Gabriela Dumitru
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, Iasi 700505, Romania
| | - Heba A S El-Nashar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt
| | - Nada M Mostafa
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt
| | - Omayma A Eldahshan
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt
| | - Razvan Stefan Boiangiu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, Iasi 700505, Romania
| | - Elena Todirascu-Ciornea
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, Iasi 700505, Romania
| | - Lucian Hritcu
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University of Iasi, Bd. Carol I, No. 11, Iasi 700505, Romania.
| | - Abdel Nasser B Singab
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, Cairo 11566, Egypt.
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Islam MT, Zihad SMNK, Rahman MS, Sifat N, Khan MR, Uddin SJ, Rouf R. Agathisflavone: Botanical sources, therapeutic promises, and molecular docking study. IUBMB Life 2019; 71:1192-1200. [DOI: 10.1002/iub.2053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/04/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Muhammad Torequl Islam
- Department for Management of Science and Technology DevelopmentTon Duc Thang University Ho Chi Minh City Vietnam
- Faculty of PharmacyTon Duc Thang University Ho Chi Minh City Vietnam
| | - S. M. Neamul Kabir Zihad
- Pharmacy Discipline, Life Science SchoolKhulna University Khulna Bangladesh
- Department of PharmacyAtish Dipankar University of Science & Technology Dhaka Bangladesh
| | - Md. Shamim Rahman
- Biotechnology & Genetic Engineering Discipline, Life Science SchoolKhulna University Khulna Bangladesh
| | - Nazifa Sifat
- Pharmacy Discipline, Life Science SchoolKhulna University Khulna Bangladesh
| | - Md. Roich Khan
- Department of Pharmacy, Life Science FacultyBangabandhu Sheikh Mujibur Rahman Science & Technology University Gopalganj Bangladesh
| | - Shaikh Jamal Uddin
- Pharmacy Discipline, Life Science SchoolKhulna University Khulna Bangladesh
| | - Razina Rouf
- Department of Pharmacy, Life Science FacultyBangabandhu Sheikh Mujibur Rahman Science & Technology University Gopalganj Bangladesh
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16
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Lopes Andrade AW, Dias Ribeiro Figueiredo D, Torequl Islam M, Viana Nunes AM, da Conceição Machado K, da Conceição Machado K, Uddin SJ, Ahmed Shilpi J, Rouf R, de Carvalho Melo-Cavalcante AA, David JM, Mubarak MS, Pereira Costa J. Toxicological evaluation of the biflavonoid, agathisflavone in albino Swiss mice. Biomed Pharmacother 2019; 110:68-73. [DOI: 10.1016/j.biopha.2018.11.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/02/2018] [Accepted: 11/10/2018] [Indexed: 12/27/2022] Open
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Andrade AWL, Machado KDC, Machado KDC, Figueiredo DDR, David JM, Islam MT, Uddin SJ, Shilpi JA, Costa JP. In vitro antioxidant properties of the biflavonoid agathisflavone. Chem Cent J 2018; 12:75. [PMID: 29959550 PMCID: PMC6026112 DOI: 10.1186/s13065-018-0443-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/22/2018] [Indexed: 12/14/2022] Open
Abstract
Purpose Free radicals are considered as the causative agents of a variety of acute and chronic pathologies. Natural antioxidants have drawn attention of the researchers in recent years for their ability to scavenge free radicals with minimal or even no side effects. This study evaluates the antioxidant capacity of agathisflavone, a naturally occurring biflavonoid by a number of in vitro methods. Methods Agathisflavone was subjected to DPPH, ABTS, OH and NO radical scavenging assay, reducing potential and inhibition of lipid peroxidation (TBARS) test using trolox as a standard. Results Agathisflavone showed concentration-dependent antioxidant activity against all types of free radicals used in this study. The antioxidant capacity, reducing potential and inhibition of lipid peroxidation showed by agathisflavone were comparable to that of trolox. Conclusion Agathisflavone exhibited antioxidant capacity, which suggests considering this biflavonoid for the use in the prevention and/or treatment of diseases precipitated by oxidative stress.
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Affiliation(s)
| | | | - Katia da Conceição Machado
- Laboratory of Research in Experimental Neurochemistry, Federal University of Piauí (UFPI), Teresina, Brazil
| | | | | | - Muhammad Torequl Islam
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam. .,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
| | - Shaikh Jamal Uddin
- Pharmacy Discipline, School of Life Sciences, Khulna University, Khulna, 9208, Bangladesh
| | - Jamil A Shilpi
- Pharmacy Discipline, School of Life Sciences, Khulna University, Khulna, 9208, Bangladesh
| | - Jéssica Pereira Costa
- Laboratory of Research in Experimental Neurochemistry, Federal University of Piauí (UFPI), Teresina, Brazil
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Chirumbolo S, Bjørklund G. Agathisflavone and GABAA receptors in the biflavone-mediated action on rat primary cortical neurons. Neurotoxicology 2018. [DOI: 10.1016/j.neuro.2018.03.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dos Santos Souza C, Grangeiro MS, Lima Pereira EP, Dos Santos CC, da Silva AB, Sampaio GP, Ribeiro Figueiredo DD, David JM, David JP, da Silva VDA, Butt AM, Lima Costa S. Agathisflavone, a flavonoid derived from Poincianella pyramidalis (Tul.), enhances neuronal population and protects against glutamate excitotoxicity. Neurotoxicology 2018; 65:85-97. [PMID: 29425760 DOI: 10.1016/j.neuro.2018.02.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/16/2018] [Accepted: 02/02/2018] [Indexed: 01/01/2023]
Abstract
Flavonoids are bioactive compounds that are known to be neuroprotective against glutamate-mediated excitotoxicity, one of the major causes of neurodegeneration. The mechanisms underlying these effects are unresolved, but recent evidence indicates flavonoids may modulate estrogen signaling, which can delay the onset and ameliorate the severity of neurodegenerative disorders. Furthermore, the roles played by glial cells in the neuroprotective effects of flavonoids are poorly understood. The aim of this study was to investigate the effects of the flavonoid agathisflavone (FAB) in primary neuron-glial co-cultures from postnatal rat cerebral cortex. Compared to controls, treatment with FAB significantly increased the number of neuronal progenitors and mature neurons, without increasing astrocytes or microglia. These pro-neuronal effects of FAB were suppressed by antagonists of estrogen receptors (ERα and ERβ). In addition, treatment with FAB significantly reduced cell death induced by glutamate and this was associated with reduced expression levels of pro-inflammatory (M1) microglial cytokines, including TNFα, IL1β and IL6, which are associated with neurotoxicity, and increased expression of IL10 and Arginase 1, which are associated with anti-inflammatory (M2) neuroprotective microglia. We also observed that FAB increased neuroprotective trophic factors, such as BDNF, NGF, NT4 and GDNF. The neuroprotective effects of FAB were also associated with increased expression of glutamate regulatory proteins in astrocytes, namely glutamine synthetase (GS) and Excitatory Amino Acid Transporter 1 (EAAT1). These findings indicate that FAB acting via estrogen signaling stimulates production of neurons in vitro and enhances the neuroprotective properties of microglia and astrocytes to significantly ameliorate glutamate-mediated neurotoxicity.
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Affiliation(s)
- Cleide Dos Santos Souza
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil
| | - Maria Socorro Grangeiro
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil
| | - Erica Patricia Lima Pereira
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil
| | - Cleonice Creusa Dos Santos
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil
| | - Alessandra Bispo da Silva
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil
| | - Geraldo Pedral Sampaio
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil
| | | | - Jorge Mauricio David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Universidade Federal da Bahia, Brazil
| | - Juceni Pereira David
- Departament of Medication, Faculty of Pharmacy, Universidade Federal da Bahia, Brazil
| | | | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Science, University of Portsmouth, United Kingdom
| | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Universidade Federal da Bahia, Brazil.
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Venditti A, Frezza C, Campanelli C, Foddai S, Bianco A, Serafini M. Phytochemical analysis of the ethanolic extract of Agathis robusta (C. Moore ex F. Muell.) F.M. Bailey. Nat Prod Res 2017; 31:1604-1611. [DOI: 10.1080/14786419.2017.1288625] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Claudio Frezza
- Dipartimento di Biologia Ambientale, Università di Roma ‘La Sapienza’, Rome, Italy
| | - Chiara Campanelli
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma ‘La Sapienza’, Rome, Italy
| | - Sebastiano Foddai
- Dipartimento di Biologia Ambientale, Università di Roma ‘La Sapienza’, Rome, Italy
| | | | - Mauro Serafini
- Dipartimento di Biologia Ambientale, Università di Roma ‘La Sapienza’, Rome, Italy
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21
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Covington CL, Junior FMS, Silva JHS, Kuster RM, de Amorim MB, Polavarapu PL. Atropoisomerism in Biflavones: The Absolute Configuration of (-)-Agathisflavone via Chiroptical Spectroscopy. JOURNAL OF NATURAL PRODUCTS 2016; 79:2530-2537. [PMID: 27723329 DOI: 10.1021/acs.jnatprod.6b00395] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The first natural occurrence in optically active form of the dimeric flavonoid agathisflavone and definition of its axial chirality using chiroptical spectroscopic methods are described. The experimental electronic circular dichroism, electronic dissymmetry factor, optical rotatory dispersion, vibrational circular dichroism (VCD), and vibrational dissymmetry factor spectra of agathisflavone are presented and analyzed with their corresponding quantum chemical predictions to definitively assign the axial chirality of (-)-agathisflavone as (aS).
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Affiliation(s)
- Cody L Covington
- Department of Chemistry, Vanderbilt University , Nashville, Tennessee 37235, United States
| | - Fernando M S Junior
- Department of Chemistry, Vanderbilt University , Nashville, Tennessee 37235, United States
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Jessica H S Silva
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Ricardo M Kuster
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Mauro B de Amorim
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro , 21941-902, Rio de Janeiro, RJ, Brazil
| | - Prasad L Polavarapu
- Department of Chemistry, Vanderbilt University , Nashville, Tennessee 37235, United States
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22
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Nascimento JM, Garcia S, Saia-Cereda VM, Santana AG, Brandao-Teles C, Zuccoli GS, Junqueira DG, Reis-de-Oliveira G, Baldasso PA, Cassoli JS, Martins-de-Souza D. Proteomics and molecular tools for unveiling missing links in the biochemical understanding of schizophrenia. Proteomics Clin Appl 2016; 10:1148-1158. [DOI: 10.1002/prca.201600021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 06/21/2016] [Accepted: 07/14/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Juliana M. Nascimento
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Sheila Garcia
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Verônica M. Saia-Cereda
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Aline G. Santana
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Caroline Brandao-Teles
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Giuliana S. Zuccoli
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Danielle G. Junqueira
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Guilherme Reis-de-Oliveira
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Paulo A. Baldasso
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Juliana S. Cassoli
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
| | - Daniel Martins-de-Souza
- Department of Biochemistry and Tissue Biology; Laboratory of Neuroproteomics; Institute of Biology; University of Campinas (UNICAMP); Campinas São Paulo Brazil
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Garcez PP, Loiola EC, Madeiro da Costa R, Higa LM, Trindade P, Delvecchio R, Nascimento JM, Brindeiro R, Tanuri A, Rehen SK. Zika virus impairs growth in human neurospheres and brain organoids. Science 2016; 352:816-8. [PMID: 27064148 DOI: 10.1126/science.aaf6116] [Citation(s) in RCA: 839] [Impact Index Per Article: 104.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 04/04/2016] [Indexed: 12/28/2022]
Abstract
Since the emergence of Zika virus (ZIKV), reports of microcephaly have increased considerably in Brazil; however, causality between the viral epidemic and malformations in fetal brains needs further confirmation. We examined the effects of ZIKV infection in human neural stem cells growing as neurospheres and brain organoids. Using immunocytochemistry and electron microscopy, we showed that ZIKV targets human brain cells, reducing their viability and growth as neurospheres and brain organoids. These results suggest that ZIKV abrogates neurogenesis during human brain development.
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Affiliation(s)
- Patricia P Garcez
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | | | | | - Luiza M Higa
- Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pablo Trindade
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil
| | - Rodrigo Delvecchio
- Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana Minardi Nascimento
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil. Institute of Biology, State University of Campinas, Campinas, Brazil
| | - Rodrigo Brindeiro
- Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Amilcar Tanuri
- Institute of Biology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Stevens K Rehen
- D'Or Institute for Research and Education (IDOR), Rio de Janeiro, Brazil. Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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24
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Impact of Plant-Derived Flavonoids on Neurodegenerative Diseases. Neurotox Res 2016; 30:41-52. [PMID: 26951456 DOI: 10.1007/s12640-016-9600-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/24/2015] [Accepted: 01/21/2016] [Indexed: 12/27/2022]
Abstract
Neurodegenerative disorders have a common characteristic that is the involvement of different cell types, typically the reactivity of astrocytes and microglia, characterizing gliosis, which in turn contributes to the neuronal dysfunction and or death. Flavonoids are secondary metabolites of plant origin widely investigated at present and represent one of the most important and diversified among natural products phenolic groups. Several biological activities are attributed to this class of polyphenols, such as antitumor activity, antioxidant, antiviral, and anti-inflammatory, among others, which give significant pharmacological importance. Our group have observed that flavonoids derived from Brazilian plants Dimorphandra mollis Bent., Croton betulaster Müll. Arg., e Poincianella pyramidalis Tul., botanical synonymous Caesalpinia pyramidalis Tul. also elicit a broad spectrum of responses in astrocytes and neurons in culture as activation of astrocytes and microglia, astrocyte associated protection of neuronal progenitor cells, neuronal differentiation and neuritogenesis. It was observed the flavonoids also induced neuronal differentiation of mouse embryonic stem cells and human pluripotent stem cells. Moreover, with the objective of seeking preclinical pharmacological evidence of these molecules, in order to assess its future use in the treatment of neurodegenerative disorders, we have evaluated the effects of flavonoids in preclinical in vitro models of neuroinflammation associated with Parkinson's disease and glutamate toxicity associated with ischemia. In particular, our efforts have been directed to identify mechanisms involved in the changes in viability, morphology, and glial cell function induced by flavonoids in cultures of glial cells and neuronal cells alone or in interactions and clarify the relation with their neuroprotective and morphogetic effects.
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25
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Souza CS, Paulsen BS, Devalle S, Lima Costa S, Borges HL, Rehen SK. Commitment of human pluripotent stem cells to a neural lineage is induced by the pro-estrogenic flavonoid apigenin. ACTA ACUST UNITED AC 2015. [DOI: 10.3402/arb.v2.29244] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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26
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da Costa RFM, Kormann ML, Galina A, Rehen SK. Valproate Disturbs Morphology and Mitochondrial Membrane Potential in Human Neural Cells. ACTA ACUST UNITED AC 2015. [DOI: 10.1089/aivt.2015.0016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
| | - Michelle Louise Kormann
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Antonio Galina
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Stevens Kastrup Rehen
- D'Or Institute for Research and Education, Rio de Janeiro, Brazil
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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27
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Acquarone M, de Melo TM, Meireles F, Brito-Moreira J, Oliveira G, Ferreira ST, Castro NG, Tovar-Moll F, Houzel JC, Rehen SK. Mitomycin-treated undifferentiated embryonic stem cells as a safe and effective therapeutic strategy in a mouse model of Parkinson's disease. Front Cell Neurosci 2015; 9:97. [PMID: 25904842 PMCID: PMC4389407 DOI: 10.3389/fncel.2015.00097] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 03/04/2015] [Indexed: 12/21/2022] Open
Abstract
Parkinson’s disease (PD) is an incurable progressive neurodegenerative disorder. Clinical presentation of PD stems largely from the loss of dopaminergic neurons in the nigrostriatal dopaminergic pathway, motivating experimental strategies of replacement based on cell therapy. Transplantation of dopaminergic neurons derived from embryonic stem cells significantly improves motor functions in rodent and non-human primate models of PD. However, protocols to generate dopaminergic neurons from embryonic stem cells generally meet with low efficacy and high risk of teratoma formation upon transplantation. To address these issues, we have pre-treated undifferentiated mouse embryonic stem cells (mESCs) with the DNA alkylating agent mitomycin C (MMC) before transplantation. MMC treatment of cultures prevented tumorigenesis in a 12 week follow-up after mESCs were injected in nude mice. In 6-OH-dopamine-lesioned mice, intrastriatal injection of MMC-treated mESCs markedly improved motor function without tumor formation for as long as 15 months. Furthermore, we show that halting mitotic activity of undifferentiated mESCs induces a four-fold increase in dopamine release following in vitro differentiation. Our findings indicate that treating mESCs with MMC prior to intrastriatal transplant is an effective to strategy that could be further investigated as a novel alternative for treatment of PD.
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Affiliation(s)
- Mariana Acquarone
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, Brazil
| | - Thiago M de Melo
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, Brazil
| | - Fernanda Meireles
- D'Or Institute for Research and Education (IDOR) Rio de Janeiro, Brazil
| | - Jordano Brito-Moreira
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro Rio de Janeiro, Brazil
| | - Gabriel Oliveira
- Oswaldo Cruz Institute, Oswaldo Cruz Foundation Rio de Janeiro, Brazil
| | - Sergio T Ferreira
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro Rio de Janeiro, Brazil
| | - Newton G Castro
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, Brazil
| | - Fernanda Tovar-Moll
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, Brazil ; D'Or Institute for Research and Education (IDOR) Rio de Janeiro, Brazil
| | - Jean-Christophe Houzel
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, Brazil
| | - Stevens K Rehen
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro Rio de Janeiro, Brazil ; D'Or Institute for Research and Education (IDOR) Rio de Janeiro, Brazil
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28
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Chen P, Chen JZ, Shao CY, Li CY, Zhang YD, Lu WJ, Fu Y, Gu P, Fan X. Treatment with retinoic acid and lens epithelial cell-conditioned medium in vitro directed the differentiation of pluripotent stem cells towards corneal endothelial cell-like cells. Exp Ther Med 2014; 9:351-360. [PMID: 25574197 PMCID: PMC4280952 DOI: 10.3892/etm.2014.2103] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 11/07/2014] [Indexed: 12/13/2022] Open
Abstract
Embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs) have extensive self-renewal capacity and the potential to differentiate into all tissue-specific cell lineages, including corneal endothelial cells (CECs). They are a promising prospect for the future of regenerative medicine. The method of derivation of CECs from ESCs and iPSCs, however, remains to be elucidated. In this study, mouse ESCs and iPSCs were induced to differentiate into CECs using CEC embryonic development events as a guide. All-trans retinoic acid (RA) treatment during the embryoid body (EB) differentiation step was used to promote neural crest (NC) cell differentiation as first step and was followed by a second induction in CEC- or lens epithelial cell (LEC)-conditioned medium (CM) to ultimately generate CEC-like cells. During the corresponding differentiation stages, NC developmental markers and CEC differentiation markers were detected at the protein level using immunocytochemistry (ICC) and at the mRNA level by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). During the first stage, the data indicated that 4 days of treatment with 1 μM RA starting on day 4 of EB formation favored NC cell differentiation and that plating on gelatin-coated plates led to cell migration out of the EBs. The second-stage differentiation results showed that the CM, particularly the LEC-CM, enhanced the yield of polygonal cells with CEC-specific marker expression shown by ICC and RT-qPCR. This study demonstrates that mouse ESCs and iPSCs were induced and expressed CEC differentiation markers when subjected to a two-step inducement process, suggesting that they are a promising resource for corneal endothelium failure replacement therapy in the future.
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Affiliation(s)
- Ping Chen
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China ; Department of Ophthalmology, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Jun-Zhao Chen
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Chun-Yi Shao
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Chuan-Yin Li
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Yi-Dan Zhang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Wen-Juan Lu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Yao Fu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Ping Gu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
| | - Xianqun Fan
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, P.R. China
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29
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Xu SL, Zhu KY, Bi CWC, Yan L, Men SWX, Dong TTX, Tsim KWK. Flavonoids, derived from traditional Chinese medicines, show roles in the differentiation of neurons: possible targets in developing health food products. ACTA ACUST UNITED AC 2014; 99:292-9. [PMID: 24339039 DOI: 10.1002/bdrc.21054] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 10/28/2013] [Indexed: 12/25/2022]
Abstract
Flavonoids, a family of phenolic compounds, are distributed in a variety of fruits, vegetables, tea, and wine. More importantly, many flavonoids are served as the active ingredients in traditional Chinese herbal medicines, which in general do not have side effects. Several lines of evidence support that flavonoids have impacts on many aspects of human health, including anti-tumor, anti-oxidation, and anti-inflammation. Recently, there is significant attention focused on the neuronal beneficial effects of flavonoids, including the promotion of nervous system development, neuroprotection against neurotoxin stress, as well as the promotion of memory, learning, and cognitive functions. Here, the activities of flavonoids on the development of nervous system are being summarized and discussed. The flavonoids from diverse herbal medicines have significant effects in different developmental stages of nervous systems, including neuronal stem cell differentiation, neurite outgrowth, and neuronal plasticity. These findings imply that flavonoids are potential candidates for the development of health supplements in preventing birth defects and neuronal diseases.
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Affiliation(s)
- Sherry L Xu
- Division of Life Science and Center for Chinese Medicine, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
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30
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2,4-dinitrophenol induces neural differentiation of murine embryonic stem cells. Stem Cell Res 2013; 11:1407-16. [DOI: 10.1016/j.scr.2013.09.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Revised: 09/02/2013] [Accepted: 09/27/2013] [Indexed: 11/20/2022] Open
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31
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Oberbauer E, Urmann C, Steffenhagen C, Bieler L, Brunner D, Furtner T, Humpel C, Bäumer B, Bandtlow C, Couillard-Despres S, Rivera FJ, Riepl H, Aigner L. Chroman-like cyclic prenylflavonoids promote neuronal differentiation and neurite outgrowth and are neuroprotective. J Nutr Biochem 2013; 24:1953-62. [PMID: 24070601 DOI: 10.1016/j.jnutbio.2013.06.005] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 05/23/2013] [Accepted: 06/07/2013] [Indexed: 12/18/2022]
Abstract
Flavonoids target a variety of pathophysiological mechanisms and are therefore increasingly considered as compounds encompassed with therapeutic potentials in diseases such as cancer, diabetes, arteriosclerosis, and neurodegenerative diseases and mood disorders. Hops (Humulus lupulus L.) is rich in flavonoids such as the flavanone 8-prenylnaringenin, which is the most potent phytoestrogen identified so far, and the prenylchalcone xanthohumol, which has potent tumor-preventive, anti-inflammatory and antiviral activities. In the present study, we questioned whether hops-derived prenylflavonoids and synthetic derivatives thereof act on neuronal precursor cells and neuronal cell lines to induce neuronal differentiation, neurite outgrowth and neuroprotection. Therefore, mouse embryonic forebrain-derived neural precursors and Neuro2a neuroblastoma-derived cells were stimulated with the prenylflavonoids of interest, and their potential to activate the promoter of the neuronal fate-specific doublecortin gene and to stimulate neuronal differentiation and neurite outgrowth was analyzed. In this screening, we identified highly "neuroactive" compounds, which we termed "enhancement of neuronal differentiation factors" (ENDFs). The most potent molecule, ENDF1, was demonstrated to promote neuronal differentiation of neural stem cells and neurite outgrowth of cultured dorsal root ganglion neurons and protected neuronal PC12 cells from cobalt chloride-induced as well as cholinergic neurons of the nucleus basalis of Meynert from deafferentation-induced cell death. The results indicate that hops-derived prenylflavonoids such as ENDFs might be powerful molecules to promote neurogenesis, neuroregeneration and neuroprotection in cases of chronic neurodegenerative diseases, acute brain and spinal cord lesion and age-associated cognitive impairments.
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Affiliation(s)
- Eleni Oberbauer
- Institute of Molecular Regenerative Medicine, Paracelsus Medical University Salzburg, Salzburg, Austria; Spinal Cord Injury and Tissue Regeneration Center Salzburg, Paracelsus Medical University Salzburg, Salzburg, Austria
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32
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Paulsen BDS, de Moraes Maciel R, Galina A, Souza da Silveira M, dos Santos Souza C, Drummond H, Nascimento Pozzatto E, Silva H, Chicaybam L, Massuda R, Setti-Perdigão P, Bonamino M, Belmonte-de-Abreu PS, Castro NG, Brentani H, Rehen SK. Altered oxygen metabolism associated to neurogenesis of induced pluripotent stem cells derived from a schizophrenic patient. Cell Transplant 2013; 21:1547-59. [PMID: 21975034 DOI: 10.3727/096368911x600957] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Schizophrenia has been defined as a neurodevelopmental disease that causes changes in the process of thoughts, perceptions, and emotions, usually leading to a mental deterioration and affective blunting. Studies have shown altered cell respiration and oxidative stress response in schizophrenia; however, most of the knowledge has been acquired from postmortem brain analyses or from nonneural cells. Here we describe that neural cells, derived from induced pluripotent stem cells generated from skin fibroblasts of a schizophrenic patient, presented a twofold increase in extramitochondrial oxygen consumption as well as elevated levels of reactive oxygen species (ROS), when compared to controls. This difference in ROS levels was reverted by the mood stabilizer valproic acid. Our model shows evidence that metabolic changes occurring during neurogenesis are associated with schizophrenia, contributing to a better understanding of the development of the disease and highlighting potential targets for treatment and drug screening.
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Affiliation(s)
- Bruna da Silveira Paulsen
- Laboratório Nacional de Células-Tronco Embrionárias, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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33
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Cardoso SC, Stelling MP, Paulsen BS, Rehen SK. Synchrotron radiation X-ray microfluorescence reveals polarized distribution of atomic elements during differentiation of pluripotent stem cells. PLoS One 2011; 6:e29244. [PMID: 22195032 PMCID: PMC3241705 DOI: 10.1371/journal.pone.0029244] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Accepted: 11/23/2011] [Indexed: 12/29/2022] Open
Abstract
The mechanisms underlying pluripotency and differentiation in embryonic and reprogrammed stem cells are unclear. In this work, we characterized the pluripotent state towards neural differentiated state through analysis of trace elements distribution using the Synchrotron Radiation X-ray Fluorescence Spectroscopy. Naive and neural-stimulated embryoid bodies (EB) derived from embryonic and induced pluripotent stem (ES and iPS) cells were irradiated with a spatial resolution of 20 µm to make elemental maps and qualitative chemical analyses. Results show that these embryo-like aggregates exhibit self-organization at the atomic level. Metallic elements content rises and consistent elemental polarization pattern of P and S in both mouse and human pluripotent stem cells were observed, indicating that neural differentiation and elemental polarization are strongly correlated.
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Affiliation(s)
- Simone C. Cardoso
- Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mariana P. Stelling
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Bruna S. Paulsen
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Stevens K. Rehen
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Hospital Universitário Clementino Fraga Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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34
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Retinoic acid-treated pluripotent stem cells undergoing neurogenesis present increased aneuploidy and micronuclei formation. PLoS One 2011; 6:e20667. [PMID: 21674001 PMCID: PMC3108948 DOI: 10.1371/journal.pone.0020667] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Accepted: 05/09/2011] [Indexed: 11/19/2022] Open
Abstract
The existence of loss and gain of chromosomes, known as aneuploidy, has been previously described within the central nervous system. During development, at least one-third of neural progenitor cells (NPCs) are aneuploid. Notably, aneuploid NPCs may survive and functionally integrate into the mature neural circuitry. Given the unanswered significance of this phenomenon, we tested the hypothesis that neural differentiation induced by all-trans retinoic acid (RA) in pluripotent stem cells is accompanied by increased levels of aneuploidy, as previously described for cortical NPCs in vivo. In this work we used embryonal carcinoma (EC) cells, embryonic stem (ES) cells and induced pluripotent stem (iPS) cells undergoing differentiation into NPCs. Ploidy analysis revealed a 2-fold increase in the rate of aneuploidy, with the prevalence of chromosome loss in RA primed stem cells when compared to naïve cells. In an attempt to understand the basis of neurogenic aneuploidy, micronuclei formation and survivin expression was assessed in pluripotent stem cells exposed to RA. RA increased micronuclei occurrence by almost 2-fold while decreased survivin expression by 50%, indicating possible mechanisms by which stem cells lose their chromosomes during neural differentiation. DNA fragmentation analysis demonstrated no increase in apoptosis on embryoid bodies treated with RA, indicating that cell death is not the mandatory fate of aneuploid NPCs derived from pluripotent cells. In order to exclude that the increase in aneuploidy was a spurious consequence of RA treatment, not related to neurogenesis, mouse embryonic fibroblasts were treated with RA under the same conditions and no alterations in chromosome gain or loss were observed. These findings indicate a correlation amongst neural differentiation, aneuploidy, micronuclei formation and survivin downregulation in pluripotent stem cells exposed to RA, providing evidence that somatically generated chromosomal variation accompanies neurogenesis in vitro.
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