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Pedro Amorim Neto D, Vitor Pereira de Godoy J, Tostes K, Pelegrini Bosque B, Vieira Rodrigues P, Aparecida Rocco S, Luis Sforça M, de Castro Fonseca M. Metabolic Disturbances in the Gut-brain Axis of a Mouse Model of MPTP-induced Parkinsonism Evaluated by Nuclear Magnetic Resonance. Neuroscience 2023; 526:21-34. [PMID: 37331688 DOI: 10.1016/j.neuroscience.2023.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/22/2023] [Accepted: 06/12/2023] [Indexed: 06/20/2023]
Abstract
Parkinson's Disease is a synucleinopathy that primarily affects the dopaminergic cells of the central nervous system, leading to motor and gastrointestinal disturbances. However, intestinal peripheral neurons undergo a similar neurodegeneration process, marked by α-synuclein (αSyn) accumulation and loss of mitochondrial homeostasis. We investigated the metabolic alterations in different biometrics that compose the gut-brain axis (blood, brain, large intestine, and feces) in an MPTP-induced mouse model of sporadic Parkinson's Disease. Animals received escalating administration of MPTP. Tissues and fecal pellets were collected, and the metabolites were identified through the untargeted Nuclear Magnetic Resonance spectroscopic (1H NMR) technique. We found differences in many metabolites from all the tissues evaluated. The differential expression of metabolites in these samples mainly reflects inflammatory aspects, cytotoxicity, and mitochondrial impairment (oxidative stress and energy metabolism) in the animal model used. The direct evaluation of fecal metabolites revealed changes in several classes of metabolites. This data reinforces previous studies showing that Parkinson's disease is associated with metabolic perturbation not only in brain-related tissues, but also in periphery structures such as the gut. In addition, the evaluation of the microbiome and metabolites from gut and feces emerge as promising sources of information for understanding the evolution and progression of sporadic Parkinson's Disease.
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Affiliation(s)
- Dionísio Pedro Amorim Neto
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, Brazil
| | - João Vitor Pereira de Godoy
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Katiane Tostes
- Hospital de Amor, Hospital de Cancer de Barretos, Barretos, São Paulo, Brazil
| | - Beatriz Pelegrini Bosque
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Paulla Vieira Rodrigues
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Silvana Aparecida Rocco
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Mauricio Luis Sforça
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, Brazil
| | - Matheus de Castro Fonseca
- Laboratory of Sarkis Mazmanian, Division of Biology and Biological Engineering, California Institute of Technology, 1200 E. California Boulevard, Pasadena, CA 91125, USA.
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Fonseca MDC, Marazzi-Diniz PHS, Leite MF, Ehrlich BE. Calcium signaling in chemotherapy-induced neuropathy. Cell Calcium 2023; 113:102762. [PMID: 37244172 DOI: 10.1016/j.ceca.2023.102762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 05/29/2023]
Abstract
Alterations in calcium (Ca2+) signaling is a major mechanism in the development of chemotherapy-induced peripheral neuropathy (CIPN), a side effect caused by multiple chemotherapy regimens. CIPN is associated with numbness and incessant tingling in hands and feet which diminishes quality of life during treatment. In up to 50% of survivors, CIPN is essentially irreversible. There are no approved, disease-modifying treatments for CIPN. The only recourse for oncologists is to modify the chemotherapy dose, a situation that can compromise optimal chemotherapy and impact patient outcomes. Here we focus on taxanes and other chemotherapeutic agents that work by altering microtubule assemblies to kill cancer cells, but also have off-target toxicities. There have been many molecular mechanisms proposed to explain the effects of microtubule-disrupting drugs. In neurons, an initiating step in the off-target effects of treatment by taxane is binding to neuronal calcium sensor 1 (NCS1), a sensitive Ca2+ sensor protein that maintains the resting Ca2+ concentration and dynamically enhances responses to cellular stimuli. The taxane/NCS1 interaction causes a Ca2+ surge that starts a pathophysiological cascade of consequences. This same mechanism contributes to other conditions including chemotherapy-induced cognitive impairment. Strategies to prevent the Ca2+ surge are the foundation of current work.
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Affiliation(s)
- Matheus de Castro Fonseca
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, United States.
| | - Paulo H S Marazzi-Diniz
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - M Fatima Leite
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Barbara E Ehrlich
- Department of Pharmacology, School of Medicine, Yale University, New Haven, CT, United States.
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Amorim Neto DP, de Castro Fonseca M. Protocol for rapid obtention and fractionation of anaerobic bacterial conditioned media to study calcium signaling in enteroendocrine cells. STAR Protoc 2022; 3:101486. [PMID: 35755129 PMCID: PMC9214868 DOI: 10.1016/j.xpro.2022.101486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Gut microbiota influences neurodevelopment, behavior and contributes to neurodegenerative disorders. One possible mechanism is the direct modulation of calcium (Ca2+) signaling and protein homeostasis in enteroendocrine cells (EECs), a component of the gut epithelium. Here, we present a protocol to isolate fractions of conditioned media (CM) from the anaerobic bacteria Akkermansia muciniphila and the utilization of this CM to monitor Ca2+ fluctuation in EECs by imaging. This protocol can be adapted and applied to various bacterial cultures and cell types. For complete details on the use and execution of this protocol, please refer to Amorim Neto et al. (2022). Protocol for rapid obtention and fractionation of anaerobic bacterial conditioned media Protocol can be applied to different anaerobic bacterial strains Isolated media can be used to study Ca2+ signaling in several mammalian cells
Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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Affiliation(s)
- Dionisio Pedro Amorim Neto
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, Brazil
| | - Matheus de Castro Fonseca
- Division of Biology and Biological Engineering, California Institute of Technology, 1200 E. California Boulevard, Pasadena, CA, USA.
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Avelino TM, García-Arévalo M, Torres FR, Goncalves Dias MM, Domingues RR, de Carvalho M, Fonseca MDC, Rodrigues VKT, Leme AFP, Figueira ACM. Mass spectrometry-based proteomics of 3D cell culture: A useful tool to validate culture of spheroids and organoids. SLAS Discov 2022; 27:167-174. [PMID: 35058185 DOI: 10.1016/j.slasd.2021.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Worldwide obesity, defined as abnormal or excessive fat accumulation that may result in different comorbidities, is considered a pandemic condition that has nearly tripled in the last 45 years. Most studies on obesity use animal models or adipocyte monolayer cell culture to investigate adipose tissue. However, besides monolayer cell culture approaches do not fully recapitulate the physiology of living organisms, there is a growing need to reduce or replace animals in research. In this context, the development of 3D self-organized structures has provided models that better reproduce the in vitro aspects of the in vivo physiology in comparison to traditional monolayer cell culture. Besides, recent advances in omics technologies have allowed us to characterize these cultures at the proteome, metabolome, transcription factor, DNA-binding and transcriptomic levels. These two combined approaches, 3D culture and omics, have provided more realistic data about determined conditions. Thereby, here we focused on the development of an obesity study pipeline including proteomic analysis to validate adipocyte-derived spheroids. Through the combination of collected mass spectrometry data from differentiated 3T3-L1 spheroids and from murine white adipose tissue (WAT), we identified 1732 proteins in both samples. By using a comprehensive proteomic analysis, we observed that the in vitro 3D culture of differentiated adipocytes shares important molecular pathways with the WAT, including expression of proteins involved in central metabolic process of the adipose tissue. Together, our results show a combination of an orthogonal method and an image-based analysis that constitutes a useful pipeline to be applied in 3D adipocyte culture.
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Affiliation(s)
- Thayna Mendonca Avelino
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio); State University of Campinas (UNICAMP), Department of Pharmacology Science
| | - Marta García-Arévalo
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio)
| | - Felipe Rafael Torres
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio)
| | - Marieli Mariano Goncalves Dias
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio); State University of Campinas (UNICAMP), Department of Molecular and Functional Biology
| | - Romenia Ramos Domingues
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio)
| | - Murilo de Carvalho
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio)
| | - Matheus de Castro Fonseca
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio)
| | | | - Adriana Franco Paes Leme
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio)
| | - Ana Carolina Migliorini Figueira
- National Center of Research in Energy and Materials (CNPEM), National Laboratory of Bioscience (LNBio); State University of Campinas (UNICAMP), Department of Pharmacology Science; State University of Campinas (UNICAMP), Department of Molecular and Functional Biology.
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Rodrigues PV, de Godoy JVP, Bosque BP, Amorim Neto DP, Tostes K, Palameta S, Garcia-Rosa S, Tonoli CCC, de Carvalho HF, de Castro Fonseca M. Transcellular propagation of fibrillar α-synuclein from enteroendocrine to neuronal cells requires cell-to-cell contact and is Rab35-dependent. Sci Rep 2022; 12:4168. [PMID: 35264710 PMCID: PMC8907230 DOI: 10.1038/s41598-022-08076-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 03/02/2022] [Indexed: 01/15/2023] Open
Abstract
Parkinson’s disease (PD) is a neurodegenerative condition featured by motor dysfunction, death of midbrain dopaminergic neurons and accumulation of α-synuclein (αSyn) aggregates. Growing evidence suggests that PD diagnosis happens late in the disease progression and that the pathology may originate much earlier in the enteric nervous system (ENS) before advancing to the brain, via autonomic fibers. It was recently described that a specific cell type from the gut epithelium named enteroendocrine cells (EECs) possess many neuron-like properties including αSyn expression. By facing the gut lumen and being directly connected with αSyn-containing enteric neurons in a synaptic manner, EECs form a neural circuit between the gastrointestinal tract and the ENS, thereby being a possible key player in the outcome of PD in the gut. We have characterized the progression and the cellular mechanisms involved in αSyn pre-formed fibrils (PFFs) transfer from EECs to neuronal cells. We show that brain organoids efficiently internalize αSyn PFF seeds which triggers the formation of larger intracellular inclusions. In addition, in the enteroendocrine cell line STC-1 and in the neuronal cell line SH-SY5Y, αSyn PFFs induced intracellular calcium (Ca2+) oscillations on an extracellular Ca2+ source-dependent manner and triggered αSyn fibrils internalization by endocytosis. We characterized the spread of αSyn PFFs from enteroendocrine to neuronal cells and showed that this process is dependent on physical cell-to-cell contact and on Rab35 GTPase. Lastly, inhibition of Rab35 increases the clearance of αSyn fibrils by redirecting them to the lysosomal compartment. Therefore, our results reveal mechanisms that contribute to the understanding of how seeded αSyn fibrils promote the progression of αSyn pathology from EECs to neuronal cells shifting the focus of PD etiology to the ENS.
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Affiliation(s)
- Paulla Vieira Rodrigues
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - João Vitor Pereira de Godoy
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Beatriz Pelegrini Bosque
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Dionísio Pedro Amorim Neto
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Katiane Tostes
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil
| | - Soledad Palameta
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil
| | - Sheila Garcia-Rosa
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil
| | - Celisa Caldana Costa Tonoli
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil
| | | | - Matheus de Castro Fonseca
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo, 13083-100, Brazil. .,Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil. .,Laboratory of Sarkis Mazmanian, Division of Biology and Biological Engineering, California Institute of Technology, 1200 E. California Boulevard, Pasadena, CA, USA.
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Amorim Neto DP, Bosque BP, Pereira de Godoy JV, Rodrigues PV, Meneses DD, Tostes K, Costa Tonoli CC, Faustino de Carvalho H, González-Billault C, de Castro Fonseca M. Akkermansia muciniphila induces mitochondrial calcium overload and α -synuclein aggregation in an enteroendocrine cell line. iScience 2022; 25:103908. [PMID: 35243260 PMCID: PMC8881719 DOI: 10.1016/j.isci.2022.103908] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/06/2021] [Accepted: 02/08/2022] [Indexed: 12/12/2022] Open
Abstract
The gut microbiota influence neurodevelopment, modulate behavior, and contribute to neurodegenerative disorders. Several studies have consistently reported a greater abundance of Akkermansia muciniphila in Parkinson disease (PD) fecal samples. Therefore, we investigated whether A.muciniphila-conditioned medium (CM) could initiate α-synuclein (αSyn) misfolding in enteroendocrine cells (EEC) — a component of the gut epithelium featuring neuron-like properties. We found that A. muciniphila CM composition is influenced by the ability of the strain to degrade mucin. Our in vitro experiments showed that the protein-enriched fraction of mucin-free CM induces RyR-mediated Ca2+ release and increased mitochondrial Ca2+ uptake leading to ROS generation and αSyn aggregation. Oral administration of A. muciniphila cultivated in the absence of mucin to mice led to αSyn aggregation in cholecystokinin (CCK)-positive EECs but no motor deficits were observed. Noteworthy, buffering mitochondrial Ca2+ reverted the damaging effects observed. These molecular insights offer evidence that bacterial proteins can induce αSyn aggregation in EECs. Gut bacterium Akkermansia muciniphila is increased in patients with Parkinson disease A. muciniphila-conditioned medium induces mitochondrial Ca2+ overload in EECs Mitochondrial Ca2+ overload leads to ROS generation and αSyn aggregation in vitro Buffering mitochondrial Ca2+ inhibits A. muciniphila-induced αSyn aggregation
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Affiliation(s)
- Dionísio Pedro Amorim Neto
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Beatriz Pelegrini Bosque
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - João Vitor Pereira de Godoy
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Paulla Vieira Rodrigues
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
| | - Dario Donoso Meneses
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
| | - Katiane Tostes
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
| | - Celisa Caldana Costa Tonoli
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
| | | | - Christian González-Billault
- Department of Biology, Faculty of Sciences and Department of Neurosciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Department of Neurosciences, Faculty of Medicine, Universidad de Chile, Santiago, Chile
- Geroscience Center for Brain Health and Metabolism, Santiago, Chile
- The Buck Institute for Research on Aging, Novato, CA 94945, USA
| | - Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., 13083-100 Campinas, São Paulo, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, São Paulo, Brazil
- Corresponding author
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7
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de Castro Fonseca M, de Oliveira JF, Araujo BHS, Canateli C, do Prado PFV, Amorim Neto DP, Bosque BP, Rodrigues PV, de Godoy JVP, Tostes K, Filho HVR, Nascimento AFZ, Saito A, Tonoli CCC, Batista FAH, de Oliveira PSL, Figueira AC, Souza da Costa S, Krepischi ACV, Rosenberg C, Westfahl H, da Silva AJR, Franchini KG. Molecular and cellular basis of hyperassembly and protein aggregation driven by a rare pathogenic mutation in DDX3X. iScience 2021; 24:102841. [PMID: 34381968 PMCID: PMC8335631 DOI: 10.1016/j.isci.2021.102841] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/21/2021] [Accepted: 07/08/2021] [Indexed: 12/30/2022] Open
Abstract
Current studies estimate that 1–3% of females with unexplained intellectual disability (ID) present de novo splice site, nonsense, frameshift, or missense mutations in the DDX3X protein (DEAD-Box Helicase 3 X-Linked). However, the cellular and molecular mechanisms by which DDX3X mutations impair brain development are not fully comprehended. Here, we show that the ID-linked missense mutation L556S renders DDX3X prone to aggregation. By using a combination of biophysical assays and imaging approaches, we demonstrate that this mutant assembles solid-like condensates and amyloid-like fibrils. Although we observed greatly reduced expression of the mutant allele in a patient who exhibits skewed X inactivation, this appears to be enough to sequestrate healthy proteins into solid-like ectopic granules, compromising cell function. Therefore, our data suggest ID-linked DDX3X L556S mutation as a disorder arising from protein misfolding and aggregation. DDX3X mutations skew X-inactivation and are found in 1-3% of unexplained ID in females DDX3X mutant proteins assemble solid-like condensates and amyloid-like fibrils Aberrant granules formed by DDX3X mutants sequestrate healthy DDX3X protein ID-linked DDX3X L556S mutation decreases cell viability and induces apoptosis
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Affiliation(s)
- Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Juliana Ferreira de Oliveira
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Bruno Henrique Silva Araujo
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Camila Canateli
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Paula Favoretti Vital do Prado
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Dionísio Pedro Amorim Neto
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - Beatriz Pelegrini Bosque
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - Paulla Vieira Rodrigues
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - João Vitor Pereira de Godoy
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil.,Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - Katiane Tostes
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Helder Veras Ribeiro Filho
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Andrey Fabricio Ziem Nascimento
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Angela Saito
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Celisa Caldana Costa Tonoli
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Fernanda Aparecida Heleno Batista
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Paulo Sergio Lopes de Oliveira
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Ana Carolina Figueira
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil
| | - Silvia Souza da Costa
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Ana Cristina Victorino Krepischi
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Carla Rosenberg
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, São Paulo, Brazil
| | - Harry Westfahl
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Antônio José Roque da Silva
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Kleber Gomes Franchini
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 10000 Giuseppe Maximo Scolfaro St., Campinas, São Paulo 13083-100, Brazil.,Department of Internal Medicine, School of Medicine, University of Campinas, Campinas, Brazil
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8
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Rodrigues PV, Tostes K, Bosque BP, de Godoy JVP, Amorim Neto DP, Dias CSB, Fonseca MDC. Illuminating the Brain With X-Rays: Contributions and Future Perspectives of High-Resolution Microtomography to Neuroscience. Front Neurosci 2021; 15:627994. [PMID: 33815039 PMCID: PMC8010130 DOI: 10.3389/fnins.2021.627994] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/26/2021] [Indexed: 12/27/2022] Open
Abstract
The assessment of three-dimensional (3D) brain cytoarchitecture at a cellular resolution remains a great challenge in the field of neuroscience and constant development of imaging techniques has become crucial, particularly when it comes to offering direct and clear obtention of data from macro to nano scales. Magnetic resonance imaging (MRI) and electron or optical microscopy, although valuable, still face some issues such as the lack of contrast and extensive sample preparation protocols. In this context, x-ray microtomography (μCT) has become a promising non-destructive tool for imaging a broad range of samples, from dense materials to soft biological specimens. It is a new supplemental method to be explored for deciphering the cytoarchitecture and connectivity of the brain. This review aims to bring together published works using x-ray μCT in neurobiology in order to discuss the achievements made so far and the future of this technique for neuroscience.
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Affiliation(s)
- Paulla Vieira Rodrigues
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - Katiane Tostes
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Beatriz Pelegrini Bosque
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - João Vitor Pereira de Godoy
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - Dionisio Pedro Amorim Neto
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
- Department of Structural and Functional Biology, State University of Campinas, Campinas, Brazil
| | - Carlos Sato Baraldi Dias
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
| | - Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, Brazil
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9
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Lima Filho ACM, França A, Florentino RM, Dos Santos ML, de Oliveira Lemos F, Missiaggia DG, Fonseca RC, Gustavo Oliveira A, Ananthanarayanan M, Guerra MT, de Castro Fonseca M, Vidigal PVT, Lima CX, Nathanson MH, Fatima Leite M. Inositol 1,4,5-trisphosphate receptor type 3 plays a protective role in hepatocytes during hepatic ischemia-reperfusion injury. Cell Calcium 2020; 91:102264. [PMID: 32957029 DOI: 10.1016/j.ceca.2020.102264] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 01/02/2023]
Abstract
Hepatic ischemia-reperfusion injury is seen in a variety of clinical conditions, including hepatic thrombosis, systemic hypotension, and liver transplantation. Calcium (Ca2+) signaling mediates several pathophysiological processes in the liver, but it is not known whether and how intracellular Ca2+ channels are involved in the hepatocellular events secondary to ischemia-reperfusion. Using an animal model of hepatic ischemia-reperfusion injury, we observed a progressive increase in expression of the type 3 isoform of the inositol trisphosphate receptor (ITPR3), an intracellular Ca2+ channel that is not normally expressed in healthy hepatocytes. ITPR3 expression was upregulated, at least in part, by a combination of demethylation of the ITPR3 promoter region and the increased transcriptional activity of the nuclear factor of activated T-cells (NFAT). Additionally, expression of pro-inflammatory interleukins and necrotic surface area were less pronounced in livers of control animals compared to liver-specific ITPR3 KO mice subjected to hepatic damage. Corroborating these findings, ITPR3 expression and activation of NFAT were observed in hepatocytes of liver biopsies from patients who underwent liver ischemia caused by thrombosis after organ transplant. Together, these results are consistent with the idea that ITPR3 expression in hepatocytes plays a protective role during hepatic injury induced by ischemia-reperfusion.
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Affiliation(s)
| | - Andressa França
- Department of Molecular Medicine, Federal University of Minas Gerais (UFMG), MG, Brazil.
| | - Rodrigo M Florentino
- Department of Biophysics and Physiology, Federal University of Minas Gerais (UFMG), MG, Brazil.
| | | | | | | | | | - André Gustavo Oliveira
- Department of Biophysics and Physiology, Federal University of Minas Gerais (UFMG), MG, Brazil.
| | | | - Mateus T Guerra
- Section of Digestive Disease, Department of Internal Medicine, Yale University School of Medicine, CT, United States.
| | - Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials, SP, Brazil.
| | | | - Cristiano Xavier Lima
- Department of Surgery, Medicine School of Federal University of Minas Gerais (UFMG), MG, United States.
| | - Michael H Nathanson
- Section of Digestive Disease, Department of Internal Medicine, Yale University School of Medicine, CT, United States.
| | - M Fatima Leite
- Department of Biophysics and Physiology, Federal University of Minas Gerais (UFMG), MG, Brazil.
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10
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Borghi F, Silva C, da Silva PC, Ferrucci DL, Morais CL, Conceição-Vertamatti AG, Carvalho HF, Fonseca MDC, Vieira AS, Grassi-Kassisse DM. The influence of hypertensive environment on adipose tissue remodeling measured by fluorescence lifetime imaging in spontaneously hypertensive rats. Mol Cell Endocrinol 2020; 506:110758. [PMID: 32057944 DOI: 10.1016/j.mce.2020.110758] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/10/2020] [Accepted: 02/10/2020] [Indexed: 12/20/2022]
Abstract
There is a lack of information correlating low adiposity with hypertension experienced by Spontaneous Hypertensive Rats (SHR) or overweight and normotension in Wistar-Kyoto (WKY). We aimed to investigate this lipodystrophy phenomenon by measuring fluorescence lifetime (FLIM), optical redox ratio (ORR), serum levels of hypothalamic-pituitary-adrenal (HPA) and/or hypothalamic-pituitary-thyroid (HPT) hormones axes between Wistar, WKY and SHR before and after establishment of hypertension. Under high blood pressure, we evaluated serum adipokines. Brown adipose tissue was characterized as lower ORR and shorter FLIM compared to white adipose tissue. HPT axis showed a crucial role in the SHR adipose tissue configuration by attenuating whitening. The increased adiposity in WKY may act as a preventive agent for hypertension, since SHR, with low adiposity, establishes the disease. The hypertensive environment can highlight key adipokines that may result in new therapeutic approaches to the treatment of adiposity dysfunctions and hypertension.
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Affiliation(s)
- Filipy Borghi
- LABEEST, Laboratory of Stress Study, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Carolina Silva
- LABEEST, Laboratory of Stress Study, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Priscila Cristina da Silva
- LABEEST, Laboratory of Stress Study, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Danilo Lopes Ferrucci
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Camila Lidiane Morais
- LABEEST, Laboratory of Stress Study, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Ana Gabriela Conceição-Vertamatti
- LABEEST, Laboratory of Stress Study, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Hernandes Faustino Carvalho
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970, Campinas, Sao Paulo, Brazil
| | - André Schwambach Vieira
- Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil
| | - Dora Maria Grassi-Kassisse
- LABEEST, Laboratory of Stress Study, Department of Structural and Functional Biology, Institute of Biology, University of Campinas, UNICAMP, 13083-862, Campinas, SP, Brazil.
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11
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Dias CSB, Neto DPA, Baraldi GL, Fonseca MDC. Comparative analysis of sample preparation protocols of soft biological tissues for morphometric studies using synchrotron-based X-ray microtomography. J Synchrotron Radiat 2019; 26:2013-2023. [PMID: 31721746 DOI: 10.1107/s1600577519011299] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
The spread of microtomography as a tool for visualization of soft tissues has had a significant impact on a better understanding of complex biological systems. This technique allows a detailed three-dimensional quantitative view of the specimen to be obtained, correlating its morphological organization with its function, providing valuable insights on the functionality of the tissue. Regularly overlooked, but of great importance, proper sample mounting and preparation are fundamental for achieving the highest possible image quality even for the high-resolution imaging systems currently under development. Here, a quantitative analysis compares some of the most common sample-mounting strategies used for synchrotron-based X-ray microtomography of soft tissues: alcoholic-immersion, paraffin-embedding and critical-point drying. These three distinct sample-mounting strategies were performed on the same specimen in order to investigate their impact on sample morphology regardless of individual sample variation. In that sense, the alcoholic-immersion strategy, although causing less shrinkage to the tissue, proved to be the most unsuitable approach for a high-throughput high-resolution imaging experiment due to sample drifting. Also, critical-point drying may present some interesting advantages regarding image quality but is also incompatible with a high-throughput experiment. Lastly, paraffin-embedding is shown to be the most suitable strategy for current soft tissue microtomography experiments. Such detailed analysis of biological sample-mounting strategies for synchrotron-based X-ray microtomography are expected to offer valuable insights on the best approach for using this technique for 3D imaging of soft tissues and following morphometric analysis.
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Affiliation(s)
- Carlos Sato Baraldi Dias
- Brazilian Synchrotron Light National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Maximo Scolfaro 10000, Campinas, São Paulo 13083-970, Brazil
| | - Dionísio Pedro Amorim Neto
- Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Maximo Scolfaro 10000, Campinas, São Paulo 13083-970, Brazil
| | - Giovanni Lenzi Baraldi
- Brazilian Synchrotron Light National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Maximo Scolfaro 10000, Campinas, São Paulo 13083-970, Brazil
| | - Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials (CNPEM), Giuseppe Maximo Scolfaro 10000, Campinas, São Paulo 13083-970, Brazil
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12
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Nunes Dos Santos K, Florentino RM, França A, Lima Filho ACM, Santos MLD, Missiaggia D, Fonseca MDC, Brasil Costa I, Vidigal PVT, Nathanson MH, Lemos FDO, Leite MF. Polymorphism in the Promoter Region of NFE2L2 Gene Is a Genetic Marker of Susceptibility to Cirrhosis Associated with Alcohol Abuse. Int J Mol Sci 2019; 20:E3589. [PMID: 31340446 PMCID: PMC6678089 DOI: 10.3390/ijms20143589] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/12/2019] [Accepted: 07/15/2019] [Indexed: 12/12/2022] Open
Abstract
Alcoholic liver disease (ALD) is a highly prevalent spectrum of pathologies caused by alcohol overconsumption. Morbidity and mortality related to ALD are increasing worldwide, thereby demanding strategies for early diagnosis and detection of ALD predisposition. A potential candidate as a marker for ALD susceptibility is the transcription factor nuclear factor erythroid-related factor 2 (Nrf2), codified by the nuclear factor erythroid 2-related factor 2 gene (NFE2L2). Nrf2 regulates expression of proteins that protect against oxidative stress and inflammation caused by alcohol overconsumption. Here, we assessed genetic variants of NFE2L2 for association with ALD. Specimens from patients diagnosed with cirrhosis caused by ALD were genotyped for three NFE2L2 single nucleotide polymorphisms (SNP) (SNPs: rs35652124, rs4893819, and rs6721961). Hematoxylin & eosin and immunohistochemistry were performed to determine the inflammatory score and Nrf2 expression, respectively. SNPs rs4893819 and rs6721961 were not specifically associated with ALD, but analysis of SNP rs35652124 suggested that this polymorphism predisposes to ALD. Furthermore, SNP rs35652124 was associated with a lower level of Nrf2 expression. Moreover, liver samples from ALD patients with this polymorphism displayed more severe inflammatory activity. Together, these findings provide evidence that the SNP rs35652124 variation in the Nrf2-encoding gene NFE2L2 is a potential genetic marker for susceptibility to ALD.
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Affiliation(s)
| | | | - Andressa França
- Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | | | | | - Dabny Missiaggia
- Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
| | - Matheus de Castro Fonseca
- Laboratório Nacional de Biociências (LNBio), Centro de Pesquisa em Energia e Materiais (CNPEM), Campinas, SP 13083-970, Brazil
| | - Igor Brasil Costa
- Instituto de Pesquisas Evandro Chagas - IEC, Ananindeua, PA 67030-000, Brazil
| | | | - Michael H Nathanson
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT 06510, USA
| | | | - M Fatima Leite
- Universidade Federal de Minas Gerais, Belo Horizonte, MG 31270-901, Brazil
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13
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Vicentino ARR, Carneiro VC, Allonso D, Guilherme RDF, Benjamim CF, Dos Santos HAM, Xavier F, Pyrrho ADS, Gomes JDAS, Fonseca MDC, de Oliveira RC, Pereira TA, Ladislau L, Lambertucci JR, Fantappié MR. Emerging Role of HMGB1 in the Pathogenesis of Schistosomiasis Liver Fibrosis. Front Immunol 2018; 9:1979. [PMID: 30258438 PMCID: PMC6143665 DOI: 10.3389/fimmu.2018.01979] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/13/2018] [Indexed: 12/11/2022] Open
Abstract
In chronic schistosomiasis, liver fibrosis is linked to portal hypertension, which is a condition associated with high mortality and morbidity. High mobility group box 1 (HMGB1) was originally described as a nuclear protein that functions as a structural co-factor in transcriptional regulation. However, HMGB1 can also be secreted into the extracellular milieu under appropriate signal stimulation. Extracellular HMGB1 acts as a multifunctional cytokine that contributes to infection, injury, inflammation, and immune responses by binding to specific cell-surface receptors. HMGB1 is involved in fibrotic diseases. From a clinical perspective, HMGB1 inhibition may represent a promising therapeutic approach for treating tissue fibrosis. In this study, we demonstrate elevated levels of HMGB1 in the sera in experimental mice or in patients with schistosomiasis. Using immunohistochemistry, we demonstrated that HMGB1 trafficking in the hepatocytes of mice suffering from acute schistosomiasis was inhibited by Glycyrrhizin, a well-known HMGB1 direct inhibitor, as well as by DIC, a novel and potential anti-HMGB1 compound. HMGB1 inhibition led to significant downregulation of IL-6, IL4, IL-5, IL-13, IL-17A, which are involved in the exacerbation of the immune response and liver fibrogenesis. Importantly, infected mice that were treated with DIC or GZR to inhibit HMGB1 pro-inflammatory activity showed a significant increase in survival and a reduction of over 50% in the area of liver fibrosis. Taken together, our findings indicate that HMGB1 is a key mediator of schistosomotic granuloma formation and liver fibrosis and may represent an outstanding target for the treatment of schistosomiasis.
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Affiliation(s)
- Amanda R R Vicentino
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Vitor C Carneiro
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Diego Allonso
- Departamento de Biotecnologia Farmacêutica, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Rafael de Freitas Guilherme
- Departamento de Farmacologia Básica e Clínica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Claudia F Benjamim
- Departamento de Farmacologia Básica e Clínica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Hílton A M Dos Santos
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Fabíola Xavier
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Dos Santos Pyrrho
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Juliana de Assis Silva Gomes
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | - Thiago A Pereira
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, United States
| | - Leandro Ladislau
- Departamento de Farmacologia Básica e Clínica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - José R Lambertucci
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marcelo R Fantappié
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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14
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Fonseca MDC, Araujo BHS, Dias CSB, Archilha NL, Neto DPA, Cavalheiro E, Westfahl H, da Silva AJR, Franchini KG. High-resolution synchrotron-based X-ray microtomography as a tool to unveil the three-dimensional neuronal architecture of the brain. Sci Rep 2018; 8:12074. [PMID: 30104676 PMCID: PMC6089932 DOI: 10.1038/s41598-018-30501-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 08/01/2018] [Indexed: 11/09/2022] Open
Abstract
The assessment of neuronal number, spatial organization and connectivity is fundamental for a complete understanding of brain function. However, the evaluation of the three-dimensional (3D) brain cytoarchitecture at cellular resolution persists as a great challenge in the field of neuroscience. In this context, X-ray microtomography has shown to be a valuable non-destructive tool for imaging a broad range of samples, from dense materials to soft biological specimens, arisen as a new method for deciphering the cytoarchitecture and connectivity of the brain. In this work we present a method for imaging whole neurons in the brain, combining synchrotron-based X-ray microtomography with the Golgi-Cox mercury-based impregnation protocol. In contrast to optical 3D techniques, the approach shown here does neither require tissue slicing or clearing, and allows the investigation of several cells within a 3D region of the brain.
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Affiliation(s)
- Matheus de Castro Fonseca
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil.
| | - Bruno Henrique Silva Araujo
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
| | - Carlos Sato Baraldi Dias
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
| | - Nathaly Lopes Archilha
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
| | - Dionísio Pedro Amorim Neto
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
| | - Esper Cavalheiro
- Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP/EPM), Zip Code 04021-001, São Paulo, São Paulo, Brazil
| | - Harry Westfahl
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
| | - Antônio José Roque da Silva
- Brazilian Synchrotron Light National Laboratory (LNLS), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
| | - Kleber Gomes Franchini
- Brazilian Biosciences National Laboratory (LNBio), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, Sao Paulo, Brazil
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15
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Fonseca MDC, França A, Florentino RM, Fonseca RC, Lima Filho ACM, Vidigal PTV, Oliveira AG, Dubuquoy L, Nathanson MH, Leite MF. Cholesterol-enriched membrane microdomains are needed for insulin signaling and proliferation in hepatic cells. Am J Physiol Gastrointest Liver Physiol 2018; 315:G80-G94. [PMID: 29471671 PMCID: PMC6109708 DOI: 10.1152/ajpgi.00008.2018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Hepatocyte proliferation during liver regeneration is a well-coordinated process regulated by the activation of several growth factor receptors, including the insulin receptor (IR). The IR can be localized in part to cholesterol-enriched membrane microdomains, but the role of such domains in insulin-mediated events in hepatocytes is not known. We investigated whether partitioning of IRs into cholesterol-enriched membrane rafts is important for the mitogenic effects of insulin in the hepatic cells. IR and lipid rafts were labeled in HepG2 cells and primary rat hepatocytes. Membrane cholesterol was depleted in vitro with metyl-β-cyclodextrin (MβCD) and in vivo with lovastatin. Insulin-induced calcium (Ca2+) signals studies were examined in HepG2 cells and in freshly isolated rat hepatocytes as well as in whole liver in vivo by intravital confocal imaging. Liver regeneration was studied by 70% partial hepatectomy (PH), and hepatocyte proliferation was assessed by PCNA staining. A subpopulation of IR was found in membrane microdomains enriched in cholesterol. Depletion of cholesterol from plasma membrane resulted in redistribution of the IR along the cells, which was associated with impaired insulin-induced nuclear Ca2+ signals, a signaling event that regulates hepatocyte proliferation. Cholesterol depletion also led to ERK1/2 hyper-phosphorylation. Lovastatin administration to rats decreased hepatic cholesterol content, disrupted lipid rafts and decreased insulin-induced Ca2+ signaling in hepatocytes, and delayed liver regeneration after PH. Therefore, membrane cholesterol content and lipid rafts integrity showed to be important for the proliferative effects of insulin in hepatic cells. NEW & NOTEWORTHY One of insulin's actions is to stimulate liver regeneration. Here we show that a subpopulation of insulin receptors is in a specialized cholesterol-enriched region of the cell membrane and this subfraction is important for insulin's proliferative effects.
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Affiliation(s)
- Matheus de Castro Fonseca
- 1Brazilian Biosciences National Laboratory, Brazilian Center for Research in Energy and Materials, Campinas, Sao Paulo, Brazil,2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Andressa França
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,3Department of Molecular Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Rodrigo Machado Florentino
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Roberta Cristelli Fonseca
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,4Center for Gastrointestinal Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | - Paula Teixeira Vieira Vidigal
- 5Department of Pathological Anatomy and Forensic Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - André Gustavo Oliveira
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,4Center for Gastrointestinal Biology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Laurent Dubuquoy
- 6Lille Inflammation Research International Center–UMR995, INSERM, University of Lille, Lille, France
| | - Michael H. Nathanson
- 7Section of Digestive Diseases, Department of Internal Medicine, Yale University, New Haven, Connecticut
| | - M. Fátima Leite
- 2Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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16
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Guimarães E, Machado R, Fonseca MDC, França A, Carvalho C, Araújo e Silva AC, Almeida B, Cassini P, Hissa B, Drumond L, Gonçalves C, Fernandes G, De Brot M, Moraes M, Barcelos L, Ortega JM, Oliveira A, Leite MF. Inositol 1, 4, 5-trisphosphate-dependent nuclear calcium signals regulate angiogenesis and cell motility in triple negative breast cancer. PLoS One 2017; 12:e0175041. [PMID: 28376104 PMCID: PMC5380351 DOI: 10.1371/journal.pone.0175041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 03/20/2017] [Indexed: 01/19/2023] Open
Abstract
Increases in nuclear calcium concentration generate specific biological outcomes that differ from those resulting from increased cytoplasmic calcium. Nuclear calcium effects on tumor cell proliferation are widely appreciated; nevertheless, its involvement in other steps of tumor progression is not well understood. Therefore, we evaluated whether nuclear calcium is essential in other additional stages of tumor progression, including key steps associated with the formation of the primary tumor or with the metastatic cascade. We found that nuclear calcium buffering impaired 4T1 triple negative breast cancer growth not just by decreasing tumor cell proliferation, but also by enhancing tumor necrosis. Moreover, nuclear calcium regulates tumor angiogenesis through a mechanism that involves the upregulation of the anti-angiogenic C-X-C motif chemokine 10 (CXCL10-IP10). In addition, nuclear calcium buffering regulates breast tumor cell motility, culminating in less cell invasion, likely due to enhanced vinculin expression, a focal adhesion structural protein. Together, our results show that nuclear calcium is essential for triple breast cancer angiogenesis and cell migration and can be considered as a promising strategic target for triple negative breast cancer therapy.
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Affiliation(s)
- Erika Guimarães
- Department of Molecular Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Rodrigo Machado
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Matheus de Castro Fonseca
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Brazilian National Laboratory for Biosciences, Center for Research in Energy and Materials, Campinas, Brazil
| | - Andressa França
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Clarissa Carvalho
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Brígida Almeida
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Puebla Cassini
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Bárbara Hissa
- Department of Physics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Luciana Drumond
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Carlos Gonçalves
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Gabriel Fernandes
- Genomics Sciences and Biotechnology of Universidade Católica de Brasília, Brasília, Brazil
| | - Marina De Brot
- Department of Pathological Anatomy, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Márcio Moraes
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Lucíola Barcelos
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - José Miguel Ortega
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - André Oliveira
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - M. Fátima Leite
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
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de Castro Fonseca M, Aguiar CJ, da Rocha Franco JA, Gingold RN, Leite MF. GPR91: expanding the frontiers of Krebs cycle intermediates. Cell Commun Signal 2016; 14:3. [PMID: 26759054 PMCID: PMC4709936 DOI: 10.1186/s12964-016-0126-1] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 01/04/2016] [Indexed: 12/19/2022] Open
Abstract
Since it was discovered, the citric acid cycle has been known to be central to cell metabolism and energy homeostasis. Mainly found in the mitochondrial matrix, some of the intermediates of the Krebs cycle are also present in the blood stream. Currently, there are several reports that indicate functional roles for Krebs intermediates out of its cycle. Succinate, for instance, acts as an extracellular ligand by binding to a G-protein coupled receptor, known as GPR91, expressed in kidney, liver, heart, retinal cells and possibly many other tissues, leading to a wide array of physiological and pathological effects. Through GPR91, succinate is involved in functions such as regulation of blood pressure, inhibition of lipolysis in white adipose tissue, development of retinal vascularization, cardiac hypertrophy and activation of stellate hepatic cells by ischemic hepatocytes. Along the current review, these new effects of succinate through GPR91 will be explored and discussed.
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Affiliation(s)
- Matheus de Castro Fonseca
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil.
| | - Carla J Aguiar
- Centro Universitário Estácio de Sá, Belo Horizonte, MG, Brazil.
| | - Joao Antônio da Rocha Franco
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil.
| | - Rafael N Gingold
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil.
| | - M Fatima Leite
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Av. Antonio Carlos 6627, Belo Horizonte, MG, CEP: 31270-901, Brazil.
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Leite LF, Gomez RS, Fonseca MDC, Gomez MV, Guatimosim C. Effect of intravenous anesthetic propofol on synaptic vesicle exocytosis at the frog neuromuscular junction. Acta Pharmacol Sin 2011; 32:31-7. [PMID: 21113178 DOI: 10.1038/aps.2010.175] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AIM To investigate the presynaptic effects of propofol, a short-acting intravenous anesthetic, in the frog neuromuscular junction. METHODS Frog cutaneous pectoris nerve muscle preparations were prepared. A fluorescent tool (FM1-43) was used to visualize the effect of propofol on synaptic vesicle exocytosos in the frog neuromuscular junction. RESULTS Low concentrations of propofol, ranging from 10 to 25 μmol/L, enhanced spontaneous vesicle exocytosis monitored by FM1-43 in a Ca(2+)-dependent and Na(+)-independent fashion. Higher concentrations of propofol (50, 100, and 200 μmol/L) had no effect on spontaneous exocytosis. By contrast, higher concentrations of propofol inhibited the Na(+)-dependent exocytosis evoked by 4-aminopyridine but did not affect the Na(+)-independent exocytosis evoked by KCl. This action was similar and non-additive with that observed by tetrodotoxin, a Na(+) channel blocker. CONCLUSION Our data suggest that propofol has a dose-dependent presynaptic effect at the neuromuscular transmission which may help to understand some of the clinical effects of this agent on neuromuscular function.
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