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Stigliano I, Puricelli L, Filmus J, Sogayar MC, Joffe EBDK, Peters MAG. Retraction Note: Glypican-3 regulates migration, adhesion and actin cytoskeleton organization in mammary tumor cells through Wnt signaling modulation. Breast Cancer Res Treat 2024; 203:185. [PMID: 37688668 DOI: 10.1007/s10549-023-07123-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/11/2023]
Affiliation(s)
- Ivan Stigliano
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Mart?n´ 5481 (C1417DTB), Buenos Aires, Argentina
| | - Lydia Puricelli
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Mart?n´ 5481 (C1417DTB), Buenos Aires, Argentina
| | - Jorge Filmus
- Molecular and Cellular Biology Research, Sunnybrook and Women0s College Health Science Center, University of Toronto, Toronto, ON, M4N3M5, Canada
| | - Mari Cleide Sogayar
- Chemistry Institute, University of Sa?õ Paulo, Sa??õ Paulo, 05508-900, Brazil
| | - Elisa Bal de Kier Joffe
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Mart?n´ 5481 (C1417DTB), Buenos Aires, Argentina
| | - Marı A Giselle Peters
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Mart?n´ 5481 (C1417DTB), Buenos Aires, Argentina.
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2
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Buchanan C, Stigliano I, Garay-Malpartida HM, Rodrigues Gomes L, Puricelli L, Sogayar MC, Joffe EBDK, Peters MG. Retraction Note: Glypican-3 reexpression regulates apoptosis in murine adenocarcinoma mammary cells modulating PI3K/Akt and p38MAPK signaling pathways. Breast Cancer Res Treat 2023; 202:213. [PMID: 37667070 DOI: 10.1007/s10549-023-07120-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Affiliation(s)
- C Buchanan
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Martín 5481, C1417DTB, Buenos Aires, Argentina
| | - I Stigliano
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Martín 5481, C1417DTB, Buenos Aires, Argentina
| | - H M Garay-Malpartida
- School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, 05508-900, SP, Brazil
| | - L Rodrigues Gomes
- Chemistry Institute, University of São Paulo, São Paulo, 05508-900, SP, Brazil
| | - L Puricelli
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Martín 5481, C1417DTB, Buenos Aires, Argentina
| | - M C Sogayar
- Chemistry Institute, University of São Paulo, São Paulo, 05508-900, SP, Brazil
| | - E Bal de Kier Joffe
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Martín 5481, C1417DTB, Buenos Aires, Argentina
| | - M G Peters
- Cell Biology Department, Research Area, Institute of Oncology "Angel H. Roffo", University of Buenos Aires, Av. San Martín 5481, C1417DTB, Buenos Aires, Argentina.
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Mantovani MDC, Gabanyi I, Pantanali CA, Santos VR, Corrêa-Giannella MLC, Sogayar MC. Islet transplantation: overcoming the organ shortage. Diabetol Metab Syndr 2023; 15:144. [PMID: 37391848 DOI: 10.1186/s13098-023-01089-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/13/2023] [Indexed: 07/02/2023] Open
Abstract
BACKGROUND Type 1 diabetes mellitus (T1D) is a condition resulting from autoimmune destruction of pancreatic β cells, leading patients to require lifelong insulin therapy, which, most often, does not avoid the most common complications of this disease. Transplantation of isolated pancreatic islets from heart-beating organ donors is a promising alternative treatment for T1D, however, this approach is severely limited by the shortage of pancreata maintained under adequate conditions. METHODS In order to analyze whether and how this problem could be overcome, we undertook a retrospective study from January 2007 to January 2010, evaluating the profile of brain-dead human pancreas donors offered to our Cell and Molecular Therapy NUCEL Center ( www.usp.br/nucel ) and the basis for organ refusal. RESULTS During this time period, 558 pancreata were offered by the São Paulo State Transplantation Central, 512 of which were refused and 46 were accepted for islet isolation and transplantation. Due to the elevated number of refused organs, we decided to analyze the main reasons for refusal in order to evaluate the possibility of improving the organ acceptance rate. The data indicate that hyperglycemia, technical issues, age, positive serology and hyperamylasemia are the top five main causes for declination of a pancreas offer. CONCLUSIONS This study underlines the main reasons to decline a pancreas offer in Sao Paulo-Brazil and provides some guidance to ameliorate the rate of eligible pancreas donors, aiming at improving the islet isolation and transplantation outcome. TRIAL REGISTRATION Protocol CAPPesq number 0742/02/CONEP 9230.
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Affiliation(s)
- Marluce da Cunha Mantovani
- Cell and Molecular Therapy NUCEL Group, School of Medicine, University of São Paulo, Avenida Dr. Arnaldo, 455, São Paulo, 01246-903, SP, Brasil
- Technical Division for Teaching, Research and Innovation Support - DTAPEPI Biotechnology and Innovation Facility, School of Medicine, University of São Paulo Medical School, São Paulo, 01246-903, SP, Brazil
| | - Ilana Gabanyi
- Cell and Molecular Therapy NUCEL Group, School of Medicine, University of São Paulo, Avenida Dr. Arnaldo, 455, São Paulo, 01246-903, SP, Brasil
| | - Carlos Andrés Pantanali
- Gastroenterology Department, School of Medicine, University of São Paulo, São Paulo, 01246-903, SP, Brazil
| | - Vinícius Rocha Santos
- Gastroenterology Department, School of Medicine, University of São Paulo, São Paulo, 01246-903, SP, Brazil
| | - Maria Lúcia Cardillo Corrêa-Giannella
- Cell and Molecular Therapy NUCEL Group, School of Medicine, University of São Paulo, Avenida Dr. Arnaldo, 455, São Paulo, 01246-903, SP, Brasil
- Medical Sciences Department, Laboratory of Carbohydrates and Radioimmunoassay (LIM-18) HCFMUSP, Medical School, University of São Paulo, São Paulo, 01246-903, SP, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy NUCEL Group, School of Medicine, University of São Paulo, Avenida Dr. Arnaldo, 455, São Paulo, 01246-903, SP, Brasil.
- Technical Division for Teaching, Research and Innovation Support - DTAPEPI Biotechnology and Innovation Facility, School of Medicine, University of São Paulo Medical School, São Paulo, 01246-903, SP, Brazil.
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, 05508-000, Brazil.
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4
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Silva IBB, Kimura CH, Colantoni VP, Sogayar MC. Stem cells differentiation into insulin-producing cells (IPCs): recent advances and current challenges. Stem Cell Res Ther 2022; 13:309. [PMID: 35840987 PMCID: PMC9284809 DOI: 10.1186/s13287-022-02977-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [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: 07/24/2021] [Accepted: 06/19/2022] [Indexed: 11/10/2022] Open
Abstract
Type 1 diabetes mellitus (T1D) is a chronic disease characterized by an autoimmune destruction of insulin-producing β-pancreatic cells. Although many advances have been achieved in T1D treatment, current therapy strategies are often unable to maintain perfect control of glycemic levels. Several studies are searching for new and improved methodologies for expansion of β-cell cultures in vitro to increase the supply of these cells for pancreatic islets replacement therapy. A promising approach consists of differentiation of stem cells into insulin-producing cells (IPCs) in sufficient number and functional status to be transplanted. Differentiation protocols have been designed using consecutive cytokines or signaling modulator treatments, at specific dosages, to activate or inhibit the main signaling pathways that control the differentiation of induced pluripotent stem cells (iPSCs) into pancreatic β-cells. Here, we provide an overview of the current approaches and achievements in obtaining stem cell-derived β-cells and the numerous challenges, which still need to be overcome to achieve this goal. Clinical translation of stem cells-derived β-cells for efficient maintenance of long-term euglycemia remains a major issue. Therefore, research efforts have been directed to the final steps of in vitro differentiation, aiming at production of functional and mature β-cells and integration of interdisciplinary fields to generate efficient cell therapy strategies capable of reversing the clinical outcome of T1D.
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Affiliation(s)
- Isaura Beatriz Borges Silva
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, 05360-130, Brazil.,Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Camila Harumi Kimura
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, 05360-130, Brazil
| | - Vitor Prado Colantoni
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, 05360-130, Brazil.,Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, SP, 05508-000, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, 05360-130, Brazil. .,Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, SP, 05508-000, Brazil.
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5
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Aguiar Koga BA, Fernandes LA, Fratini P, Sogayar MC, Carreira ACO. Role of MSC-derived small extracellular vesicles in tissue repair and regeneration. Front Cell Dev Biol 2022; 10:1047094. [PMID: 36935901 PMCID: PMC10014555 DOI: 10.3389/fcell.2022.1047094] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 12/07/2022] [Indexed: 03/05/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are crucial for tissue homeostasis and repair, secreting vesicles to the extracellular environment. Isolated exosomes were shown to affect angiogenesis, immunomodulation and tissue regeneration. Numerous efforts have been dedicated to describe the mechanism of action of these extracellular vesicles (EVs) and guarantee their safety, since the final aim is their therapeutic application in the clinic. The major advantage of applying MSC-derived EVs is their low or inexistent immunogenicity, prompting their use as drug delivery or therapeutic agents, as well as wound healing, different cancer types, and inflammatory processes in the neurological and cardiovascular systems. MSC-derived EVs display no vascular obstruction effects or apparent adverse effects. Their nano-size ensures their passage through the blood-brain barrier, demonstrating no cytotoxic or immunogenic effects. Several in vitro tests have been conducted with EVs obtained from different sources to understand their biology, molecular content, signaling pathways, and mechanisms of action. Application of EVs to human therapies has recently become a reality, with clinical trials being conducted to treat Alzheimer's disease, retina degeneration, and COVID-19 patients. Herein, we describe and compare the different extracellular vesicles isolation methods and therapeutic applications regarding the tissue repair and regeneration process, presenting the latest clinical trial reports.
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Affiliation(s)
- Bruna Andrade Aguiar Koga
- Cell and Molecular Therapy Group (NUCEL), School of Medicine, University of São Paulo, São Paulo, Brazil
- Department of Surgery, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Letícia Alves Fernandes
- Department of Surgery, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Paula Fratini
- Department of Surgery, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Group (NUCEL), School of Medicine, University of São Paulo, São Paulo, Brazil
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, Brazil
| | - Ana Claudia Oliveira Carreira
- Cell and Molecular Therapy Group (NUCEL), School of Medicine, University of São Paulo, São Paulo, Brazil
- Department of Surgery, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
- Center for Natural and Human Sciences, Federal University of ABC, São Paulo, Brazil
- *Correspondence: Ana Claudia Oliveira Carreira, ,
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6
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Facioli R, Lojudice FH, Anauate AC, Maquigussa E, Nishiura JL, Heilberg IP, Sogayar MC, Boim MA. Kidney organoids generated from erythroid progenitors cells of patients with autosomal dominant polycystic kidney disease. PLoS One 2021; 16:e0252156. [PMID: 34339420 PMCID: PMC8328284 DOI: 10.1371/journal.pone.0252156] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 05/11/2021] [Indexed: 11/18/2022] Open
Abstract
Background Kidney organoids have been broadly obtained from commercially available induced pluripotent stem cells (iPSCs); however, it has been a great challenge to efficiently produce renal organoid models from patients with autosomal dominant polycystic kidney disease (ADPKD) that recapitulate both embryogenesis and the mechanisms of cystogenesis. Methods Blood erythroid progenitors (EPs) from two ADPKD patients and one healthy donor (HC) was used as a comparative control to normalize the many technical steps for reprogramming EPs and for the organoids generation. EPs were reprogrammed by an episomal vector into iPSCs, which were differentiated into renal tubular organoids and then stimulated by forskolin to induce cysts formation. Results iPSCs derived from EPs exhibited all characteristics of pluripotency and were able to differentiate into all three germ layers. 3D tubular organoids were generated from single cells after 28 days in Matrigel. HC and ADPKD organoids did not spontaneously form cysts, but upon forskolin stimulation, cysts-like structures were observed in the ADPKD organoids but not in the HC-derived organoids. Conclusion The findings of this study showed that kidney organoids were successfully generated from the blood EP cells of ADPKD patients and a healthy control donor. This approach should contribute as a powerful tool for embryonic kidney development model, which is able to recapitulate the very early pathophysiological mechanisms involved in cytogenesis.
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Affiliation(s)
- Roberta Facioli
- Nephrology Division–Federal University of São Paulo, São Paulo, Brazil
- * E-mail:
| | - Fernando Henrique Lojudice
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | | | - Edgar Maquigussa
- Nephrology Division–Federal University of São Paulo, São Paulo, Brazil
| | | | | | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, SP, Brazil
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Silva DRS, Carreira ACO, Ferreira AO, da Silva MD, Sogayar MC, Miglino MA. Characterization of rat liver bud-derived cells. Tissue Cell 2021; 71:101510. [PMID: 33721789 DOI: 10.1016/j.tice.2021.101510] [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: 06/01/2020] [Revised: 02/03/2021] [Accepted: 02/06/2021] [Indexed: 10/22/2022]
Abstract
Cells derived from the fetal liver have been shown to be a rich source of progenitor stem cells, constituting a promising source for Tissue Engineering and Regenerative Medicine. In this study, embryo and fetal liver-bud derived cells from Fischer 344 rats were obtained at E12.5, E14.5 and E16.5 gestational days and evaluated for cell phenotype, survival and proliferation. Liver transaminase (AST and ALT) and AFP levels were lower in embryo liver-bud-derived cells on day 12.5. Markers for stem cells, cell cycle progression and cell death were differentially expressed in E12.5 cell cultures. Analysis of mitochondrial electric potential on 14.5 and 16.5 days showed a tendency for cells with lower functional or metabolic ability, in comparison to cultures derived from day 12.5. The results demonstrated that the majority of the E16.5 cells were in the G0 / G1 phase. The capacity of synthesis (S) and cellular division (G2 / M) of embryo and fetal liver bud-derived cells was constant over all gestational periods. In conclusion, embryo and fetal liver-bud-derived cells during the periods of 12.5 and 14.5 days, showed expression profile of progenitor cells, cell activity and hematopoietic function in culture.
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Affiliation(s)
- Dara Rúbia Souza Silva
- Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), University of Sao Paulo (USP), Prof. Dr Orlando Marques de Paiva Avenue, 87, University City, Sao Paulo, SP 05508-270, Brazil
| | - Ana Claudia Oliveira Carreira
- Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), University of Sao Paulo (USP), Prof. Dr Orlando Marques de Paiva Avenue, 87, University City, Sao Paulo, SP 05508-270, Brazil; Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of Sao Paulo (USP), Pangaré Street 100, University City, Butanta, SP 05360-130, Brazil
| | - Amanda Olivotti Ferreira
- Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), University of Sao Paulo (USP), Prof. Dr Orlando Marques de Paiva Avenue, 87, University City, Sao Paulo, SP 05508-270, Brazil
| | - Mônica Duarte da Silva
- Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), University of Sao Paulo (USP), Prof. Dr Orlando Marques de Paiva Avenue, 87, University City, Sao Paulo, SP 05508-270, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of Sao Paulo (USP), Pangaré Street 100, University City, Butanta, SP 05360-130, Brazil; Department of Biochemistry, Chemistry Institute, University of Sao Paulo (USP), São Paulo, SP 05508-900, Brazil
| | - Maria Angelica Miglino
- Department of Surgery, School of Veterinary Medicine and Animal Science (FMVZ), University of Sao Paulo (USP), Prof. Dr Orlando Marques de Paiva Avenue, 87, University City, Sao Paulo, SP 05508-270, Brazil.
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8
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Maselli KM, Levin G, Gee KM, Leeflang EJ, Carreira ACO, Sogayar MC, Grikscheit TC. R-Spondin1 enhances wnt signaling and decreases weight loss in short bowel syndrome zebrafish. Biochem Biophys Rep 2021; 25:100874. [PMID: 33437880 PMCID: PMC7788494 DOI: 10.1016/j.bbrep.2020.100874] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/08/2020] [Indexed: 11/17/2022] Open
Abstract
Background R-spondins, including R-spondin 1 (RSPO1), are a family of Wnt ligands that help to activate the canonical Wnt/β-catenin pathway, which is critical for intestinal epithelial cell proliferation and maintenance of intestinal stem cells. This proliferation underpins the epithelial expansion, or intestinal adaptation (IA), that occurs following massive bowel resection and short bowel syndrome (SBS). The purpose of this study was to identify if recombinant human RSPO1 (rhRSPO1) could be serially administered to SBS zebrafish to enhance cellular proliferation and IA. Methods Adult male zebrafish were assigned to four groups: sham + PBS, SBS + PBS, sham + rhRSPO1, and SBS + rhRSPO1. Sham fish had a laparotomy alone. SBS fish had a laparotomy with distal intestinal ligation and creation of a proximal stoma. Fish were weighed at initial surgery and then weekly. rhRSPO1 was administered post-operatively following either a one- or two-week dosing schedule with either 3 or 5 intraperitoneal injections, respectively. Fish were harvested at 7 or 14 days with intestinal segments collected for analysis. Results Repeated intraperitoneal injection of rhRSPO1 was feasible and well tolerated. At 7 days, intestinal epithelial proliferation was increased by rhRSPO1. At 14 days, SBS + rhRSPO1 fish lost significantly less weight than SBS + PBS fish. Measurements of intestinal surface area were not increased by rhRSPO1 administration but immunofluorescent staining for β-catenin and gene expression for cyclin D1 was increased. Conclusions Intraperitoneal injection of rhRSPO1 decreased weight loss in SBS zebrafish with increased β-catenin + cells and cyclin D1 expression at 14 days, indicating improved weight maintenance might result from increased activation of the canonical Wnt pathway. rhRSPO1 decreased weight loss in SBS zebrafish. rhRSPO1 increased intestinal cell epithelial proliferation at 7 days. rhRSPO1 increased β-catenin + cells at 14 days in the intestine of SBS zebrafish. rhRSPO1 increased cyclin D1 expression at 14 days in the intestine of SBS zebrafish.
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Affiliation(s)
- Kathryn M Maselli
- Division of Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA
| | - Gabriel Levin
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil.,Interunits Graduate Program in Biotechnology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Kristin M Gee
- Division of Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA
| | - Elisabeth J Leeflang
- Division of Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA
| | - Ana Claudia O Carreira
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil.,Interunits Graduate Program in Biotechnology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,Department of Surgery, School of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ-USP), São Paulo, SP, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil.,Interunits Graduate Program in Biotechnology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, SP, Brazil
| | - Tracy C Grikscheit
- Division of Pediatric Surgery, Children's Hospital Los Angeles, Los Angeles, CA, 90027, USA.,Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
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9
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Ribeiro PDC, Lojudice FH, Fernandes-Charpiot IMM, Baptista MASF, de Almeida Araújo S, Mendes GEF, Sogayar MC, Abbud-Filho M, Caldas HC. Therapeutic potential of human induced pluripotent stem cells and renal progenitor cells in experimental chronic kidney disease. Stem Cell Res Ther 2020; 11:530. [PMID: 33298161 PMCID: PMC7727202 DOI: 10.1186/s13287-020-02060-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 11/27/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is a global public health problem. Cell therapy using pluripotent stem cells represents an attractive therapeutic approach for the treatment of CKD. METHODS We transplanted mitomycin C (MMC)-treated human induced pluripotent stem cells (hiPSCs) and renal progenitor cells (RPCs) into a CKD rat model system. The RPC and hiPSC cells were characterized by immunofluorescence and qRT-PCR. Untreated 5/6 nephrectomized rats were compared to CKD animals receiving the same amount of MMC-treated hiPSCs or RPCs. Renal function, histology, and immunohistochemistry were evaluated 45 days post-surgery. RESULTS We successfully generated hiPSCs from peripheral blood and differentiated them into RPCs expressing renal progenitor genes (PAX2, WT1, SIX2, and SALL1) and podocyte-related genes (SYNPO, NPHS1). RPCs also exhibited reduced OCT4 expression, confirming the loss of pluripotency. After cell transplantation into CKD rats, the body weight change was significantly increased in both hiPSC and RPC groups, in comparison with the control group. Creatinine clearance (CCr) was preserved only in the hiPSC group. Similarly, the number of macrophages in the kidneys of the hiPSC group reached a statistically significant reduction, when compared to control rats. Both treatments reduced positive staining for the marker α-smooth muscle actin. Histological features showed decreased tubulointerstitial damage (interstitial fibrosis and tubular atrophy) as well as a reduction in glomerulosclerosis in both iPSC and RPC groups. CONCLUSIONS In conclusion, we describe that both MMC-treated hiPSCs and RPCs exert beneficial effects in attenuating CKD progression. Both cell types were equally efficient to reduce histological damage and weight loss caused by CKD. hiPSCs seem to be more efficient than RPCs, possibly due to a paracrine effect triggered by hiPSCs. These results demonstrate that the use of MMC-treated hiPSCs and RPCs improves clinical and histological CKD parameters, avoided tumor formation, and therefore may be a promising cell therapy strategy for CKD.
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Affiliation(s)
- Patrícia de Carvalho Ribeiro
- Laboratory of Immunology and Experimental Transplantation (LITEX), Department of Medicine, FAMERP Medical School, Sao Jose do Rio Preto, SP, Brazil
| | - Fernando Henrique Lojudice
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - Ida Maria Maximina Fernandes-Charpiot
- Laboratory of Immunology and Experimental Transplantation (LITEX), Department of Medicine, FAMERP Medical School, Sao Jose do Rio Preto, SP, Brazil
- Kidney Transplant Unit, Hospital de Base, FAMERP/FUNFARME, Sao Jose do Rio Preto, SP, Brazil
| | - Maria Alice Sperto Ferreira Baptista
- Laboratory of Immunology and Experimental Transplantation (LITEX), Department of Medicine, FAMERP Medical School, Sao Jose do Rio Preto, SP, Brazil
- Kidney Transplant Unit, Hospital de Base, FAMERP/FUNFARME, Sao Jose do Rio Preto, SP, Brazil
| | - Stanley de Almeida Araújo
- Centro de Microscopia Eletrônica, Federal University of Minas Gerais, Belo Horizonte, Brazil
- Instituto de Nefropatologia, Belo Horizonte, Minas Gerais State, Brazil
| | - Gloria Elisa Florido Mendes
- Laboratory of Immunology and Experimental Transplantation (LITEX), Department of Medicine, FAMERP Medical School, Sao Jose do Rio Preto, SP, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, SP, Brazil
| | - Mario Abbud-Filho
- Laboratory of Immunology and Experimental Transplantation (LITEX), Department of Medicine, FAMERP Medical School, Sao Jose do Rio Preto, SP, Brazil.
- Kidney Transplant Unit, Hospital de Base, FAMERP/FUNFARME, Sao Jose do Rio Preto, SP, Brazil.
| | - Heloisa Cristina Caldas
- Laboratory of Immunology and Experimental Transplantation (LITEX), Department of Medicine, FAMERP Medical School, Sao Jose do Rio Preto, SP, Brazil
- Kidney Transplant Unit, Hospital de Base, FAMERP/FUNFARME, Sao Jose do Rio Preto, SP, Brazil
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10
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Levin G, Zuber SM, Squillaro AI, Sogayar MC, Grikscheit TC, Carreira ACO. R-Spondin 1 (RSPO1) Increases Mouse Intestinal Organoid Unit Size and Survival in vitro and Improves Tissue-Engineered Small Intestine Formation in vivo. Front Bioeng Biotechnol 2020; 8:476. [PMID: 32582652 PMCID: PMC7295003 DOI: 10.3389/fbioe.2020.00476] [Citation(s) in RCA: 4] [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: 10/24/2019] [Accepted: 04/23/2020] [Indexed: 12/20/2022] Open
Abstract
Introduction: Cell therapy and tissue engineering has recently emerged as a new option for short bowel syndrome (SBS) treatment, generating tissue engineered small intestine (TESI) from organoid units (OU) and biodegradable scaffolds. The recombinant human R-Spondin 1 (rhRSPO1) protein may be a key player in this process due to its mitogenic activity in intestinal stem cells. Objective: Aiming at optimizing the TESI formation process and advancing this technology closer to the clinic, we evaluated the effects of rhRSPO1 protein on OU culture and TESI formation. Methods: Intestinal OU were isolated from C57BL/6 mice and cultured in Matrigel in the presence or absence of recombinant human rhRSPO1. Throughout the culture, OU growth and survival rates were evaluated, and cells were harvested on day 3. OU were seeded onto biodegradable scaffolds, in the presence or absence of 5 μg of rhRSPO1 and implanted into the omentum of NOD/SCID mice in order to generate TESI. The explants were harvested after 30 days, weighed, fixed in formalin and embedded in paraffin for histological analysis and immunofluorescence for different cell markers. Results: After 3 days, rhRSPO1-treated OU attained a larger size, when compared to the control group, becoming 5.7 times larger on day 6. Increased survival was observed from the second day in culture, with a 2-fold increase in OU survival between days 3 and 6. A 4.8-fold increase of non-phosphorylated β-catenin and increased relative expression of Lgr5 mRNA in the rhRSPO1-treated group confirms activation of the canonical Wnt pathway and suggests maintenance of the OU stem cell niche and associated stemness. After 30 days of in vivo maturation, rhRSPO1-treated TESI presented a larger mass than constructs treated with saline, developing a more mature intestinal epithelium with well-formed villi and crypts. In addition, the efficiency of OU-loaded rhRSPO1-treated scaffolds significantly increased, forming TESI in 100% of the samples (N = 8), of which 40% presented maximum degree of development, as compared to 66.6% in the control group (N = 9). Conclusion: rhRSPO1 treatment improves the culture of mouse intestinal OU, increasing its size and survival in vitro, and TESI formation in vivo, increasing its mass, degree of development and engraftment.
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Affiliation(s)
- Gabriel Levin
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, Brazil.,Interunits Graduate Program in Biotechnology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Developmental Biology and Regenerative Medicine Program, Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Samuel M Zuber
- Developmental Biology and Regenerative Medicine Program, Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Anthony I Squillaro
- Developmental Biology and Regenerative Medicine Program, Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, Brazil.,Interunits Graduate Program in Biotechnology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, Brazil
| | - Tracy C Grikscheit
- Developmental Biology and Regenerative Medicine Program, Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Ana Claudia O Carreira
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo, Brazil.,Interunits Graduate Program in Biotechnology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.,Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
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11
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DeOcesano-Pereira C, Machado RAC, Chudzinski-Tavassi AM, Sogayar MC. Emerging Roles and Potential Applications of Non-Coding RNAs in Glioblastoma. Int J Mol Sci 2020; 21:E2611. [PMID: 32283739 PMCID: PMC7178171 DOI: 10.3390/ijms21072611] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 03/06/2020] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 02/06/2023] Open
Abstract
Non-coding RNAs (ncRNAs) comprise a diversity of RNA species, which do not have the potential to encode proteins. Non-coding RNAs include two classes of RNAs, namely: short regulatory ncRNAs and long non-coding RNAs (lncRNAs). The short regulatory RNAs, containing up to 200 nucleotides, include small RNAs, such as microRNAs (miRNA), short interfering RNAs (siRNAs), piwi-interacting RNAs (piRNAs), and small nucleolar RNAs (snoRNAs). The lncRNAs include long antisense RNAs and long intergenic RNAs (lincRNAs). Non-coding RNAs have been implicated as master regulators of several biological processes, their expression being strictly regulated under physiological conditions. In recent years, particularly in the last decade, substantial effort has been made to investigate the function of ncRNAs in several human diseases, including cancer. Glioblastoma is the most common and aggressive type of brain cancer in adults, with deregulated expression of small and long ncRNAs having been implicated in onset, progression, invasiveness, and recurrence of this tumor. The aim of this review is to guide the reader through important aspects of miRNA and lncRNA biology, focusing on the molecular mechanism associated with the progression of this highly malignant cancer type.
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Affiliation(s)
- Carlos DeOcesano-Pereira
- Center of Excellence in New Target Discovery (CENTD), Butantan Institute, 1500 Vital Brazil Avenue, São Paulo 05503-900 SP, Brazil; (C.D.-P.); (A.M.C.-T.)
| | - Raquel A. C. Machado
- Department of Life Science and Medicine, University of Luxembourg, Campus Belval, Avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg;
| | - Ana Marisa Chudzinski-Tavassi
- Center of Excellence in New Target Discovery (CENTD), Butantan Institute, 1500 Vital Brazil Avenue, São Paulo 05503-900 SP, Brazil; (C.D.-P.); (A.M.C.-T.)
| | - Mari Cleide Sogayar
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo 05508-000, Brazil
- Cell and Molecular Therapy Center (NUCEL), School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil
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Pereira TF, Levin G, DeOcesano-Pereira C, Caodaglio AS, Fujita A, Tonso A, Sogayar MC. Fluorescence-based method is more accurate than counting-based methods for plotting growth curves of adherent cells. BMC Res Notes 2020; 13:57. [PMID: 32019595 PMCID: PMC7001368 DOI: 10.1186/s13104-020-4914-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 07/16/2019] [Accepted: 01/22/2020] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVE Cell growth curves constitute one of the primary assays employed to analyze cell proliferation dynamics of in vitro cultured cells under specific culture conditions. From the cell growth curve, it is possible to assess the behavior of proliferating cells under different conditions, such as drug treatment and genomic editions. Traditionally, growth curves for adherent cells are obtained by seeding the cells in multiple-well plates and counting the total number of cells at different time points. Here, we compare this traditional method to the fluorescence-based method, which is based on the CFSE fluorescence decay over time. RESULTS The fluorescence-based method is not dependent on the determination of the total number of cells, but rather is approached by assessing the fluorescence of a sample of single cells from a cell population at different time points after plating. Therefore, this method is not biased due to either cell loss during harvesting or to the presence of cellular debris and cell clumps. Moreover, the fluorescence-based method displays lower variation among different measurements of the same time point, which increases the reliability on the determination of lag, log and stationary phase transitions.
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Affiliation(s)
- Túlio Felipe Pereira
- Cell and Molecular Therapy Center (NUCEL), Department of Internal Medicine, School of Medicine, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP, 05360-130, Brazil
- Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, SP, Brazil
| | - Gabriel Levin
- Cell and Molecular Therapy Center (NUCEL), Department of Internal Medicine, School of Medicine, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP, 05360-130, Brazil
| | - Carlos DeOcesano-Pereira
- Cell and Molecular Therapy Center (NUCEL), Department of Internal Medicine, School of Medicine, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP, 05360-130, Brazil
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, São Paulo, SP, Brazil
| | - Amanda Schiersner Caodaglio
- Cell and Molecular Therapy Center (NUCEL), Department of Internal Medicine, School of Medicine, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP, 05360-130, Brazil
| | - André Fujita
- Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo, São Paulo, SP, Brazil
| | - Aldo Tonso
- Department of Chemical Engineering, Polytechnic School, University of São Paulo, São Paulo, SP, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), Department of Internal Medicine, School of Medicine, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP, 05360-130, Brazil.
- Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo, SP, Brazil.
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Levin G, Koga BAA, Belchior GG, Carreira ACO, Sogayar MC. Production, purification and characterization of recombinant human R-spondin1 (RSPO1) protein stably expressed in human HEK293 cells. BMC Biotechnol 2020; 20:5. [PMID: 31959207 PMCID: PMC6971977 DOI: 10.1186/s12896-020-0600-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 07/05/2019] [Accepted: 01/13/2020] [Indexed: 02/07/2023] Open
Abstract
Background The R-Spondin proteins comprise a family of secreted proteins, known for their important roles in cell proliferation, differentiation and death, by inducing the Wnt pathway. Several studies have demonstrated the importance of RSPOs in regulation of a number of tissue-specific processes, namely: bone formation, skeletal muscle tissue development, proliferation of pancreatic β-cells and intestinal stem cells and even cancer. RSPO1 stands out among RSPOs molecules with respect to its potential therapeutic use, especially in the Regenerative Medicine field, due to its mitogenic activity in stem cells. Here, we generated a recombinant human RSPO1 (rhRSPO1) using the HEK293 cell line, obtaining a purified, characterized and biologically active protein product to be used in Cell Therapy. The hRSPO1 coding sequence was synthesized and subcloned into a mammalian cell expression vector. HEK293 cells were stably co-transfected with the recombinant expression vector containing the hRSPO1 coding sequence and a hygromycin resistance plasmid, selected for hygror and subjected to cell clones isolation. Results rhRSPO1 was obtained, in the absence of serum, from culture supernatants of transfected HEK293 cells and purified using a novel purification strategy, involving two sequential chromatographic steps, namely: heparin affinity chromatography, followed by a molecular exclusion chromatography, designed to yield a high purity product. The purified protein was characterized by Western blotting, mass spectrometry and in vitro (C2C12 cells) and in vivo (BALB/c mice) biological activity assays, confirming the structural integrity and biological efficacy of this human cell expression system. Furthermore, rhRSPO1 glycosylation analysis allowed us to describe, for the first time, the glycan composition of this oligosaccharide chain, confirming the presence of an N-glycosylation in residue Asn137 of the polypeptide chain, as previously described. In addition, this analysis revealing the presence of glycan structures such as terminal sialic acid, N-acetylglucosamine and/or galactose. Conclusion Therefore, a stable platform for the production and purification of recombinant hRSPO1 from HEK293 cells was generated, leading to the production of a purified, fully characterized and biologically active protein product to be applied in Tissue Engineering.
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Affiliation(s)
- Gabriel Levin
- Cell and Molecular Therapy Center (NUCEL), Medical School, University of São Paulo, Edifício NUCEL, Rua Pangaré, 100 (Cidade Universitária), São Paulo, SP, 05360-130, Brazil
| | - Bruna Andrade Aguiar Koga
- Cell and Molecular Therapy Center (NUCEL), Medical School, University of São Paulo, Edifício NUCEL, Rua Pangaré, 100 (Cidade Universitária), São Paulo, SP, 05360-130, Brazil.,Department of Surgery, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, 13635-900, Brazil
| | - Gustavo Gross Belchior
- Cell and Molecular Therapy Center (NUCEL), Medical School, University of São Paulo, Edifício NUCEL, Rua Pangaré, 100 (Cidade Universitária), São Paulo, SP, 05360-130, Brazil
| | - Ana Claudia Oliveira Carreira
- Cell and Molecular Therapy Center (NUCEL), Medical School, University of São Paulo, Edifício NUCEL, Rua Pangaré, 100 (Cidade Universitária), São Paulo, SP, 05360-130, Brazil. .,Department of Surgery, School of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP, 13635-900, Brazil.
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL), Medical School, University of São Paulo, Edifício NUCEL, Rua Pangaré, 100 (Cidade Universitária), São Paulo, SP, 05360-130, Brazil. .,Biochemistry Department, Chemistry Institute, University of São Paulo, Sao Paulo, SP, 05508-000, Brazil.
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14
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Ribeiro TO, Silveira BM, Meira MC, Carreira ACO, Sogayar MC, Meyer R, Fortuna V. Investigating the potential of the secretome of mesenchymal stem cells derived from sickle cell disease patients. PLoS One 2019; 14:e0222093. [PMID: 31665139 PMCID: PMC6821040 DOI: 10.1371/journal.pone.0222093] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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] [Received: 05/27/2019] [Accepted: 08/21/2019] [Indexed: 02/07/2023] Open
Abstract
Sickle cell disease (SCD) is a monogenic red cell disorder associated with multiple vascular complications, microvessel injury and wound-healing deficiency. Although stem cell transplantation with bone marrow-derived mesenchymal stem cells (BMSC) can promote wound healing and tissue repair in SCD patients, therapeutic efficacy is largely dependent on the paracrine activity of the implanted BM stromal cells. Since in vitro expansion and culture conditions are known to modulate the innate characteristics of BMSCs, the present study investigated the effects of normoxic and hypoxic cell-culture preconditioning on the BMSC secretome, in addition to the expression of paracrine molecules that induce angiogenesis and skin regeneration. BMSCs derived from SCD patients were submitted to culturing under normoxic (norCM) and hypoxic (hypoCM) conditions. We found that hypoxically conditioned cells presented increased expression and secretion of several well-characterized trophic growth factors (VEGF, IL8, MCP-1, ANG) directly linked to angiogenesis and tissue repair. The hypoCM secretome presented stronger angiogenic potential than norCM, both in vitro and in vivo, as evidenced by HUVEC proliferation, survival, migration, sprouting formation and in vivo angiogenesis. After local application in a murine wound-healing model, HypoCM showed significantly improved wound closure, as well as enhanced neovascularization in comparison to untreated controls. In sum, the secretome of hypoxia-preconditioned BMSC has increased expression of trophic factors involved in angiogenesis and skin regeneration. Considering that these preconditioned media are easily obtainable, this strategy represents an alternative to stem cell transplantation and could form the basis of novel therapies for vascular regeneration and wound healing in individuals with sickle cell disease.
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Affiliation(s)
- Tiago O. Ribeiro
- Health Science Institute, Federal University of Bahia, Salvador, BA, Brazil
| | - Brysa M. Silveira
- Health Science Institute, Federal University of Bahia, Salvador, BA, Brazil
| | - Mercia C. Meira
- Health Science Institute, Federal University of Bahia, Salvador, BA, Brazil
| | - Ana C. O. Carreira
- Cell and Molecular Therapy Center NUCEL-NETCEM, School of Medicine, Internal Medicine Department, University of São Paulo, São Paulo, SP, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center NUCEL-NETCEM, School of Medicine, Internal Medicine Department, University of São Paulo, São Paulo, SP, Brazil
- Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo, SP, Brazil
| | - Roberto Meyer
- Health Science Institute, Federal University of Bahia, Salvador, BA, Brazil
| | - Vitor Fortuna
- Health Science Institute, Federal University of Bahia, Salvador, BA, Brazil
- * E-mail:
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15
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Deocesano-Pereira C, Machado RAC, De Jesus-Ferreira HC, Marchini T, Pereira TF, Carreira ACO, Sogayar MC. Functional impact of the long non-coding RNA MEG3 deletion by CRISPR/Cas9 in the human triple negative metastatic Hs578T cancer cell line. Oncol Lett 2019; 18:5941-5951. [PMID: 31788068 PMCID: PMC6865607 DOI: 10.3892/ol.2019.10969] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 06/26/2019] [Indexed: 12/24/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) serve critical roles in regulating cellular homeostasis, and their deregulated expression/activity is associated with neoplastic transformation. The maternally expressed gene 3 (MEG3) has been extensively described as a tumor suppressor gene in different types of cancer, including breast cancer. Interestingly, using a panel of seven different breast cancer cell lines, the present study revealed that MEG3 is highly expressed in the triple negative metastatic human Hs578T breast cancer cell line, which is refractory to different therapeutic approaches. Therefore, the present study aimed to investigate the phenotypic impact of MEG3 deletion in this cell line. Using the CRISPR/Cas9 system, complete knockout (KO) of MEG3 was achieved. Deletion was confirmed by genomic PCR and reverse transcription-quantitative PCR. The MEG3_KO cell population displaying the highest efficiency of genomic editing was selected for phenotypic in vitro assays, including wound scratch and Transwell assays, flow cytometry and immunofluorescence. The results demonstrated that MEG3 deletion increased cell proliferation, anchorage-independent cell growth and cell motility, which was consistent with its well-known tumor suppressor function. However, the present study revealed that MEG3_KO also lead to decreased cell invasiveness ability, supporting previous evidence that MEG3 modulates epithelial-to-mesenchymal inducing factors. The present study demonstrated that deletion of MEG3 promoted an increase in transforming growth factor β and N-cadherin protein levels and significant reduction in matrix metallopeptidase 2, zinc-finger E-box binding homeobox 1 and collagen type III α1 chain gene expression levels. Additionally, MEG3_KO cells displayed significant resistance to doxorubicin treatment, demonstrating the role of this lncRNA in cancer cell survival by regulating apoptosis. The present study highlighted the utility of CRISPR/Cas9 for anticancer studies of intergenic lncRNAs and demonstrated that, although Hs578T cells express MEG3 at high levels, these cells display mechanisms to escape the growth suppression effects of this lncRNA. Notably, the detailed pathological mechanisms of MEG3 concerning tumor metastasis remain to be elucidated prior to applying MEG3 expression/activation in future therapeutic approaches for breast cancer treatment.
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Affiliation(s)
- Carlos Deocesano-Pereira
- Cell and Molecular Therapy Center, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil
| | - Raquel Arminda Carvalho Machado
- Cell and Molecular Therapy Center, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil.,Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo 05508-000 SP, Brazil
| | - Henrique Cesar De Jesus-Ferreira
- Cell and Molecular Therapy Center, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil.,Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo 05508-000 SP, Brazil
| | - Thiago Marchini
- Cell and Molecular Therapy Center, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil
| | - Tulio Felipe Pereira
- Cell and Molecular Therapy Center, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil.,Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo 05508-000 SP, Brazil
| | | | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil.,Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo 05508-000 SP, Brazil
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16
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Spindola A, Targa ADS, Rodrigues LS, Winnischofer SMB, Lima MMS, Sogayar MC, Trombetta-Lima M. Increased Mmp/Reck Expression Ratio Is Associated with Increased Recognition Memory Performance in a Parkinson's Disease Animal Model. Mol Neurobiol 2019; 57:837-847. [PMID: 31493243 DOI: 10.1007/s12035-019-01740-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/12/2019] [Accepted: 08/19/2019] [Indexed: 02/08/2023]
Abstract
Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder worldwide. Among its non-motor symptoms, sleep disorders are extremely common, being linked to cognitive and memory disruption. The microenvironment, particularly the extracellular matrix (ECM), is deeply involved in memory consolidation as well as in neuropathological processes, such as inflammation, damage to the blood-brain barrier and neuronal death. To better understand ECM dynamics in PD memory disturbances, we investigated the orchestrated expression of Mmps (Mmp-3, Mmp-7, and Mmp-9) and their modulators (Reck and Timp-3) in a rotenone-induced PD model. Also, we introduced an additional intervention in the memory process through rapid eye movement sleep deprivation (REMSD). We observed a REMSD-induced trend in reversing the memory impairment caused by rotenone administration. Associated to this phenotype, we observed a significant increase in Mmp-7/Reck and Mmp-9/Reck mRNA expression ratio in the substantia nigra and Mmp-9/Reck ratio in the hypothalamus. Moreover, the positive correlation of Mmp/Reck expression ratios between the substantia nigra and the striatum, observed upon rotenone infusion, was reversed by REMSD. Taken together, our results suggest a potential orchestrated association between an increase in Mmp-7 and Mmp-9/Reck expression ratios in the substantia nigra and a possible positive effect on cognitive performance in subjects affected by PD.
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Affiliation(s)
- Adauto Spindola
- Núcleo de Terapia Celular e Molecular (NUCEL), Faculdade de Medicina, Universidade de São Paulo, Sao Paulo, SP, 05360-130, Brazil
| | - Adriano D S Targa
- Laboratório de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil.,Departamento de Farmacologia, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil
| | - Lais Soares Rodrigues
- Laboratório de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil.,Departamento de Farmacologia, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil
| | - Sheila Maria Brochado Winnischofer
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil.,Departamento de Biologia Celular e Molecular, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil
| | - Marcelo M S Lima
- Laboratório de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil.,Departamento de Farmacologia, Universidade Federal do Paraná, Curitiba, 81531-990, Brazil
| | - Mari Cleide Sogayar
- Núcleo de Terapia Celular e Molecular (NUCEL), Faculdade de Medicina, Universidade de São Paulo, Sao Paulo, SP, 05360-130, Brazil.,Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Sao Paulo, SP, 05508-000, Brazil
| | - Marina Trombetta-Lima
- Núcleo de Terapia Celular e Molecular (NUCEL), Faculdade de Medicina, Universidade de São Paulo, Sao Paulo, SP, 05360-130, Brazil.
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Baptista MS, Alves MJM, Arantes GM, Armelin HA, Augusto O, Baldini RL, Basseres DS, Bechara EJH, Bruni-Cardoso A, Chaimovich H, Colepicolo Neto P, Colli W, Cuccovia IM, Da-Silva AM, Di Mascio P, Farah SC, Ferreira C, Forti FL, Giordano RJ, Gomes SL, Gueiros Filho FJ, Hoch NC, Hotta CT, Labriola L, Lameu C, Machini MT, Malnic B, Marana SR, Medeiros MHG, Meotti FC, Miyamoto S, Oliveira CC, Souza-Pinto NC, Reis EM, Ronsein GE, Salinas RK, Schechtman D, Schreier S, Setubal JC, Sogayar MC, Souza GM, Terra WR, Truzzi DR, Ulrich H, Verjovski-Almeida S, Winck FV, Zingales B, Kowaltowski AJ. Where do we aspire to publish? A position paper on scientific communication in biochemistry and molecular biology. ACTA ACUST UNITED AC 2019; 52:e8935. [PMID: 31482979 PMCID: PMC6719344 DOI: 10.1590/1414-431x20198935] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 05/28/2019] [Accepted: 07/19/2019] [Indexed: 11/21/2022]
Abstract
The scientific publication landscape is changing quickly, with an enormous increase in options and models. Articles can be published in a complex variety of journals that differ in their presentation format (online-only or in-print), editorial organizations that maintain them (commercial and/or society-based), editorial handling (academic or professional editors), editorial board composition (academic or professional), payment options to cover editorial costs (open access or pay-to-read), indexation, visibility, branding, and other aspects. Additionally, online submissions of non-revised versions of manuscripts prior to seeking publication in a peer-reviewed journal (a practice known as pre-printing) are a growing trend in biological sciences. In this changing landscape, researchers in biochemistry and molecular biology must re-think their priorities in terms of scientific output dissemination. The evaluation processes and institutional funding for scientific publications should also be revised accordingly. This article presents the results of discussions within the Department of Biochemistry, University of São Paulo, on this subject.
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Affiliation(s)
- M S Baptista
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M J M Alves
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G M Arantes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - H A Armelin
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - O Augusto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R L Baldini
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - D S Basseres
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E J H Bechara
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A Bruni-Cardoso
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - H Chaimovich
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P Colepicolo Neto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - W Colli
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - I M Cuccovia
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A M Da-Silva
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S C Farah
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C Ferreira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F L Forti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R J Giordano
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S L Gomes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F J Gueiros Filho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - N C Hoch
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C T Hotta
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L Labriola
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C Lameu
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M T Machini
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - B Malnic
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S R Marana
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M H G Medeiros
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F C Meotti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Miyamoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C C Oliveira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - N C Souza-Pinto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E M Reis
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G E Ronsein
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R K Salinas
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - D Schechtman
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Schreier
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - J C Setubal
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M C Sogayar
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G M Souza
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - W R Terra
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - D R Truzzi
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - H Ulrich
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Verjovski-Almeida
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F V Winck
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - B Zingales
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A J Kowaltowski
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
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18
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Leal-Lopes C, Grazioli G, Mares-Guia TR, Coelho-Sampaio T, Sogayar MC. Polymerized laminin incorporation into alginate-based microcapsules reduces pericapsular overgrowth and inflammation. J Tissue Eng Regen Med 2019; 13:1912-1922. [PMID: 31348601 DOI: 10.1002/term.2942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 11/27/2018] [Revised: 07/05/2019] [Accepted: 07/11/2019] [Indexed: 11/08/2022]
Abstract
Cell encapsulation coats cells with an artificial membrane to preserve their physical and functional integrity. Different approaches try to develop more functional and biocompatible materials to avoid cell loss after transplantation due to inflammatory reaction, one of the main causes for graft failure. In this study, the LN-Biodritin biomaterial, based on alginate, chondroitin sulfate, and laminin, previously developed by our group, was further improved by replacing laminin by polylaminin, an artificial laminin polymer with anti-inflammatory properties, generating the new biomaterial polyLN-Biodritin. Capsules containing polylaminin are stable, do not induce macrophage activation in vitro, and are also able to prevent macrophage activation by encapsulated human pancreatic islets in vitro, preserving their glucose-stimulated insulin secretion potential. In addition, when empty capsules containing polylaminin were implanted into immunocompetent mice, the inflammatory response towards the implant was attenuated, when compared with capsules without polylaminin. The results indicate that polylaminin incorporation leads to lower levels of pericapsular growth on the capsules surface, lower infiltration of cells into the peritoneal cavity, and lower production of proinflammatory cytokines, both at the implant site (interleukin-12p70 (IL-12p70), tumor necrosis factor-α (TNF-α), monocyte chemotactic protein-1 (MCP-1), and interferon-γ (IFN-γ)) and systemically (IL-12p70 and TNF-α). Therefore, polylaminin incorporation into the microcapsules polymer attenuates the host posttransplantation immune response against implanted microcapsules, being likely to favor maintenance of engrafted encapsulated cells.
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Affiliation(s)
- Camila Leal-Lopes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Núcleo de Terapia Celular e Molecular (NUCEL), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Gisella Grazioli
- Núcleo de Terapia Celular e Molecular (NUCEL), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Thiago R Mares-Guia
- Núcleo de Terapia Celular e Molecular (NUCEL), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Tatiana Coelho-Sampaio
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mari Cleide Sogayar
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, Brazil.,Núcleo de Terapia Celular e Molecular (NUCEL), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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19
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Dourado Alcorte M, Sogayar MC, Demasi MA. Patent landscape of molecular and cellular targeted therapies for recessive dystrophic epidermolysis bullosa. Expert Opin Ther Pat 2019; 29:327-337. [PMID: 31017019 DOI: 10.1080/13543776.2019.1608181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Recessive Dystrophic Epidermolysis Bullosa (RDEB) is a monogenetic inherited genodermatosis associated with deleterious mutations in the gene encoding type VII collagen (COL7A1). COL7A1 is essential for promoting attachment of the epidermis to the dermis, and its dysfunction may lead to generalized mucosal and cutaneous blistering associated to severe deformities. Currently, management of RDEB patients is limited to supportive care, being aimed at treating and preventing common complications associated with this condition. There is a great demand to develop targeted therapies for this devastating disease and RDEB research advances are currently being translated into clinical trials. AREAS COVERED Based on the literature and patent search, the authors have grouped the RDEB targeted therapies into five categories: a) cell-based therapies; b) gene therapy; c) protein replacement therapy; d) molecular therapy based on exon skipping; and e) drug-mediated premature termination codon read-through. The patent searching strategy involved inquiring Google and USPTO patent databases to reveal companies and institutions that are active in the area of RDEB targeted therapies. EXPERT OPINION The patent landscape related to targeted therapies for RDEB is quite heterogeneous, with each targeted therapeutic approach being associated with its own challenges in achieving robust patent protection and identifying opportunities for future development.
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Affiliation(s)
| | - Mari Cleide Sogayar
- a NUCEL - School of Medicine , University of Sao Paulo , São Paulo , SP , Brazil
| | - Marcos Angelo Demasi
- a NUCEL - School of Medicine , University of Sao Paulo , São Paulo , SP , Brazil
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20
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Machado RAC, Schneider H, DeOcesano-Pereira C, Lichtenstein F, Andrade F, Fujita A, Trombetta-Lima M, Weller M, Bowman-Colin C, Sogayar MC. CHD7 promotes glioblastoma cell motility and invasiveness through transcriptional modulation of an invasion signature. Sci Rep 2019; 9:3952. [PMID: 30850678 PMCID: PMC6408455 DOI: 10.1038/s41598-019-39564-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 10/08/2018] [Accepted: 01/10/2019] [Indexed: 01/21/2023] Open
Abstract
Chromatin remodeler proteins exert an important function in promoting dynamic modifications in the chromatin architecture, performing a central role in regulating gene transcription. Deregulation of these molecular machines may lead to striking perturbations in normal cell function. The CHD7 gene is a member of the chromodomain helicase DNA-binding family and, when mutated, has been shown to be the cause of the CHARGE syndrome, a severe developmental human disorder. Moreover, CHD7 has been described to be essential for neural stem cells and it is also highly expressed or mutated in a number of human cancers. However, its potential role in glioblastoma has not yet been tested. Here, we show that CHD7 is up-regulated in human glioma tissues and we demonstrate that CHD7 knockout (KO) in LN-229 glioblastoma cells suppresses anchorage-independent growth and spheroid invasion in vitro. Additionally, CHD7 KO impairs tumor growth and increases overall survival in an orthotopic mouse xenograft model. Conversely, ectopic overexpression of CHD7 in LN-428 and A172 glioblastoma cell lines increases cell motility and invasiveness in vitro and promotes LN-428 tumor growth in vivo. Finally, RNA-seq analysis revealed that CHD7 modulates a specific transcriptional signature of invasion-related target genes. Further studies should explore clinical-translational implications for glioblastoma treatment.
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Affiliation(s)
- Raquel A C Machado
- Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo 05508-000 SP, Brazil.,Cell and Molecular Therapy Center (NUCEL), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil
| | - Hannah Schneider
- Laboratory of Molecular Neuro-Oncology, Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Carlos DeOcesano-Pereira
- Cell and Molecular Therapy Center (NUCEL), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil.,Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, São Paulo, SP, Brazil
| | - Flavio Lichtenstein
- Centre of Excellence in New Target Discovery (CENTD), Butantan Institute, São Paulo, SP, Brazil
| | - Fernando Andrade
- Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo, São Paulo, Brazil
| | - André Fujita
- Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo, São Paulo, Brazil
| | - Marina Trombetta-Lima
- Cell and Molecular Therapy Center (NUCEL), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil
| | - Michael Weller
- Laboratory of Molecular Neuro-Oncology, Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland
| | - Christian Bowman-Colin
- Cell and Molecular Therapy Center (NUCEL), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil. .,Dana Farber Cancer Institute, Harvard Medical School, 1 Jimmi Fund Way - SM808, Boston, MA, USA.
| | - Mari Cleide Sogayar
- Department of Biochemistry, Chemistry Institute, University of São Paulo, São Paulo 05508-000 SP, Brazil. .,Cell and Molecular Therapy Center (NUCEL), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo 05360-130 SP, Brazil.
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21
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Levin G, Coelho TM, Nóbrega NG, Trombetta-Lima M, Sogayar MC, Carreira ACO. Spatio-temporal expression profile of matrix metalloproteinase (Mmp) modulators Reck and Sparc during the rat ovarian dynamics. Reprod Biol Endocrinol 2018; 16:116. [PMID: 30424792 PMCID: PMC6234678 DOI: 10.1186/s12958-018-0422-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 10/14/2018] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Matrix metalloproteinases (Mmps) and their tissue inhibitors (Timps) are widely recognized as crucial factors for extracellular matrix remodeling in the ovary and are involved in follicular growth, ovulation, luteinization, and luteolysis during the estrous cycle. Recently, several genes have been associated to the modulation of Mmps activity, including Basigin (Bsg), which induces the expression of Mmps in rat ovaries; Sparc, a TGF-β modulator that is related to increased expression of Mmps in cancer; and Reck, which is associated with Mmps inhibition. However, the expression pattern of Mmp modulators in ovary dynamics is still largely uncharacterized. METHODS To characterize the expression pattern of Mmps network members in ovary dynamics, we analyzed the spatio-temporal expression pattern of Reck and Sparc, as well as of Mmp2, Mmp9 and Mmp14 proteins, by immunohistochemistry (IHC), in pre-pubertal rat ovaries obtained from an artificial cycle induced by eCG/hCG, in the different phases of the hormone-induced estrous cycle. We also determined the gene expression profiles of Mmps (2, 9, 13 14), Timps (1, 2, 3), Sparc, Bsg, and Reck to complement this panel. RESULTS IHC analysis revealed that Mmp protein expression peaks at the early stages of folliculogenesis and ovulation, decreases during ovulation-luteogenesis transition and luteogenesis, increasing again during corpus luteum maintenance and luteolysis. The protein expression patterns of these metalloproteinases and Sparc were inverse relative to the pattern displayed by Reck. We observed that the gene expression peaks of Mmps inhibitors Reck and Timp2 were closely paraleled by Mmp2 and Mmp9 suppression. The opposite was also true: increased Mmp2 and Mmp9 expression was concomitant to reduced Reck and Timp2 levels. CONCLUSION Therefore, our results generate a spatio-temporal expression profile panel of Mmps and their regulators, suggesting that Reck and Sparc seem to play a role during ovarian dynamics: Reck as a possible inhibitor and Sparc as an inducer of Mmps.
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Affiliation(s)
- Gabriel Levin
- 0000 0004 1937 0722grid.11899.38NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP 05360-130 Brazil
| | - Tatiane Maldonado Coelho
- 0000 0004 1937 0722grid.11899.38NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP 05360-130 Brazil
- 0000 0004 1937 0722grid.11899.38Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo, SP 05508-000 Brazil
| | - Nathali Guimarães Nóbrega
- 0000 0004 1937 0722grid.11899.38NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP 05360-130 Brazil
| | - Marina Trombetta-Lima
- 0000 0004 1937 0722grid.11899.38NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP 05360-130 Brazil
- 0000 0004 1937 0722grid.11899.38Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo, SP 05508-000 Brazil
| | - Mari Cleide Sogayar
- 0000 0004 1937 0722grid.11899.38NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP 05360-130 Brazil
- 0000 0004 1937 0722grid.11899.38Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo, SP 05508-000 Brazil
| | - Ana Claudia Oliveira Carreira
- 0000 0004 1937 0722grid.11899.38NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Cidade Universitária, São Paulo, SP 05360-130 Brazil
- 0000 0004 1937 0722grid.11899.38Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo, SP 05508-000 Brazil
- 0000 0004 1937 0722grid.11899.38Department of Surgery, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP 05508-270 Brazil
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22
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Lobba ARM, Carreira ACO, Cerqueira OLD, Fujita A, DeOcesano-Pereira C, Osorio CAB, Soares FA, Rameshwar P, Sogayar MC. High CD90 (THY-1) expression positively correlates with cell transformation and worse prognosis in basal-like breast cancer tumors. PLoS One 2018; 13:e0199254. [PMID: 29949609 PMCID: PMC6021101 DOI: 10.1371/journal.pone.0199254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 12/23/2017] [Accepted: 06/04/2018] [Indexed: 01/15/2023] Open
Abstract
Breast cancer is the most prevalent cancer among women, with the basal-like triple negative (TNBC) being the most agressive one, displaying the poorest prognosis within the ductal carcinoma subtype. Due to the lack of adequate molecular targets, the diagnosis and treatment of patients with the TNBC phenotype has been a great challenge. In a previous work, we identified CD90/Thy-1 as being highly expressed in the aggressive high malignancy grade Hs578T basal-like breast tumor cell line, pointing to this molecule as a promising breast tumor marker, which should be further investigated. Here, CD90 expression was analyzed in human breast cancer samples and its functional role was investigated to better assess the oncogenic nature of CD90 in mammary cells. Quantification of CD90 expression in human breast cancer samples, by tissue microarray, showed that high CD90 positivity correlates with metastasis and poor patient survival in the basal-like subtype. The functional genetic approach, by overexpression in the CD90 cDNA in a basal-like normal mammary cell line (MCF10A) and knockdown in a highly malignant cell line (Hs578T), allowed us to demonstrate that CD90 is involved with several cellular processes that lead to malignant transformation, such as: morphological change, increased cell proliferation, invasiveness, metastasis and activation of the EGFR pathway. Therefore, our results reveal that CD90 is involved with malignant transformation in breast cancer cell lines and is correlated with metastasis and poor patient survival in the basal-like subtype, being considered as a promising new breast cancer target.
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Affiliation(s)
- Aline Ramos Maia Lobba
- NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, Brazil
| | - Ana Claudia Oliveira Carreira
- NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, Brazil
| | - Otto Luiz Dutra Cerqueira
- NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - André Fujita
- Department of Computer Science, Institute of Mathematics and Statistics, University of São Paulo, São Paulo, Brazil
| | - Carlos DeOcesano-Pereira
- NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
| | | | | | - Pranela Rameshwar
- Department of Medicine, Rutgers New Jersey Medical School, Newark, New Jersey, United States of America
| | - Mari Cleide Sogayar
- NUCEL (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
- Biochemistry Department, Chemistry Institute, University of São Paulo, São Paulo, Brazil
- * E-mail:
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23
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Velloso FJ, Sogayar MC, Correa RG. Expression and in vitro assessment of tumorigenicity for NOD1 and NOD2 receptors in breast cancer cell lines. BMC Res Notes 2018; 11:222. [PMID: 29615116 PMCID: PMC5883347 DOI: 10.1186/s13104-018-3335-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Accepted: 03/28/2018] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Immune-related pathways have been frequently associated to tumorigenesis. NOD1 and NOD2 are innate immune receptors responsible for sensing a subset of bacterial-derived components, and to further translate these pathogenic signals through pro-inflammatory and survival pathways. NOD1 and NOD2 have been further associated with tumorigenesis, particularly in gastrointestinal cancers. NOD1 has also been suggested to be a tumor suppressor gene in a model of estrogen receptor-dependent breast cancer. Contrarily, NOD2 polymorphisms are associated with higher risk of breast cancer, with no tumor suppressor role being reported. To better delineate this issue, we investigated NOD1 and NOD2 expression in a panel of breast cancer cell lines, as well as their potential impact in breast tumorigenesis based on in vitro assays. RESULTS The highly invasive Hs578T breast cell line presented the second highest NOD1 expression and the lowest NOD2 expression in our panel. Therefore, we investigated whether NOD1 and/or NOD2 might act as a tumor suppressor in this cell model. Our studies indicate that overexpression of either NOD1 or NOD2 reduces cell proliferation and increases clonogenic potential in vitro. Elucidation of NOD1 and NOD2 effects on tumor cell viability and proliferation may unveil potential targets for future therapeutic intervention.
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Affiliation(s)
- Fernando J Velloso
- Cell and Molecular Therapy Center (NUCEL-NETCEM), Internal Medicine Department, School of Medicine, University of São Paulo (USP), São Paulo, SP, 05360-130, Brazil
| | - Mari Cleide Sogayar
- Cell and Molecular Therapy Center (NUCEL-NETCEM), Internal Medicine Department, School of Medicine, University of São Paulo (USP), São Paulo, SP, 05360-130, Brazil
| | - Ricardo G Correa
- Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Rd., La Jolla, CA, 92037, USA.
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24
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Assis-Ribas T, Forni MF, Winnischofer SMB, Sogayar MC, Trombetta-Lima M. Extracellular matrix dynamics during mesenchymal stem cells differentiation. Dev Biol 2018; 437:63-74. [PMID: 29544769 DOI: 10.1016/j.ydbio.2018.03.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 02/05/2018] [Accepted: 03/02/2018] [Indexed: 12/18/2022]
Abstract
Mesenchymal stem cells (MSCs) are stromal cells that display self-renewal and multipotent differentiation capacity. The repertoire of mature cells generated ranges but is not restricted to: fat, bone and cartilage. Their potential importance for both cell therapy and maintenance of in vivo homeostasis is indisputable. Nonetheless, both their in vivo identity and use in cell therapy remain elusive. A drawback generated by this fact is that little is known about the MSC niche and how it impacts differentiation and homeostasis maintenance. Hence, the roles played by the extracellular matrix (ECM) and its main regulators namely: the Matrix Metalloproteinases (MMPs) and their counteracting inhibitors (TIMPs and RECK) upon stem cells differentiation are only now beginning to be unveiled. Here, we will focus on mesenchymal stem cells and review the main mechanisms involved in adipo, chondro and osteogenesis, discussing how the extracellular matrix can impact not only lineage commitment, but, also, their survival and potentiality. This review critically analyzes recent work in the field in an effort towards a better understanding of the roles of Matrix Metalloproteinases and their inhibitors in the above-cited events.
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Affiliation(s)
- Thais Assis-Ribas
- NUCEL-NETCEM-Faculdade de Medicina, Departamento de Clínica Médica, Universidade de São Paulo, São Paulo, SP 05360-120, Brazil
| | - Maria Fernanda Forni
- Instituto de Química, Departamento de Bioquímica, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil
| | | | - Mari Cleide Sogayar
- NUCEL-NETCEM-Faculdade de Medicina, Departamento de Clínica Médica, Universidade de São Paulo, São Paulo, SP 05360-120, Brazil; Instituto de Química, Departamento de Bioquímica, Universidade de São Paulo, São Paulo, SP 05508-000, Brazil
| | - Marina Trombetta-Lima
- NUCEL-NETCEM-Faculdade de Medicina, Departamento de Clínica Médica, Universidade de São Paulo, São Paulo, SP 05360-120, Brazil.
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25
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Velloso FJ, Bianco AF, Farias JO, Torres NE, Ferruzo PY, Anschau V, Jesus-Ferreira HC, Chang THT, Sogayar MC, Zerbini LF, Correa RG. The crossroads of breast cancer progression: insights into the modulation of major signaling pathways. Onco Targets Ther 2017; 10:5491-5524. [PMID: 29200866 PMCID: PMC5701508 DOI: 10.2147/ott.s142154] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [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] [Indexed: 12/13/2022] Open
Abstract
Cancer is the disease with highest public health impact in developed countries. Particularly, breast cancer has the highest incidence in women worldwide and the fifth highest mortality in the globe, imposing a significant social and economic burden to society. The disease has a complex heterogeneous etiology, being associated with several risk factors that range from lifestyle to age and family history. Breast cancer is usually classified according to the site of tumor occurrence and gene expression profiling. Although mutations in a few key genes, such as BRCA1 and BRCA2, are associated with high breast cancer risk, the large majority of breast cancer cases are related to mutated genes of low penetrance, which are frequently altered in the whole population. Therefore, understanding the molecular basis of breast cancer, including the several deregulated genes and related pathways linked to this pathology, is essential to ensure advances in early tumor detection and prevention. In this review, we outline key cellular pathways whose deregulation has been associated with breast cancer, leading to alterations in cell proliferation, apoptosis, and the delicate hormonal balance of breast tissue cells. Therefore, here we describe some potential breast cancer-related nodes and signaling concepts linked to the disease, which can be positively translated into novel therapeutic approaches and predictive biomarkers.
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Affiliation(s)
| | | | | | | | | | - Valesca Anschau
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | | | - Ted Hung-Tse Chang
- Cancer Genomics Group, International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town, South Africa
| | | | - Luiz F Zerbini
- Cancer Genomics Group, International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town, South Africa
| | - Ricardo G Correa
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA, USA
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de Carvalho MPN, Queiroz-Hazarbassanov NGT, de Oliveira Massoco C, Sant'Anna SS, Lourenço MM, Levin G, Sogayar MC, Grego KF, Catão-Dias JL. Functional characterization of neotropical snakes peripheral blood leukocytes subsets: Linking flow cytometry cell features, microscopy images and serum corticosterone levels. Dev Comp Immunol 2017; 74:144-153. [PMID: 28414083 DOI: 10.1016/j.dci.2017.04.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Revised: 04/11/2017] [Accepted: 04/11/2017] [Indexed: 05/11/2023]
Abstract
Reptiles are the unique ectothermic amniotes, providing the key link between ectothermic anamniotes fish and amphibians, and endothermic birds and mammals; becoming an important group to study with the aim of providing significant knowledge into the evolutionary history of vertebrate immunity. Classification systems for reptiles' leukocytes have been described by their appearance rather than function, being still inconsistent. With the advent of modern techniques and the establishment of analytical protocols for snakes' blood by flow cytometry, we bring a qualitative and quantitative assessment of innate activities presented by snakes' peripheral blood leukocytes, thereby linking flow cytometric features with fluorescent and light microscopy images. Moreover, since corticosterone is an important immunomodulator in reptiles, hormone levels of all blood samples were measured. We provide novel and additional information which should contribute to better understanding of the development of the immune system of reptiles and vertebrates.
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Affiliation(s)
- Marcelo Pires Nogueira de Carvalho
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, Avenida Orlando Marques de Paiva, 87, São Paulo CEP: 05508-270, Brazil.
| | | | - Cristina de Oliveira Massoco
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, Avenida Orlando Marques de Paiva, 87, São Paulo CEP: 05508-270, Brazil
| | - Sávio Stefanini Sant'Anna
- Laboratory of Herpetology, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo CEP: 05503-900, Brazil
| | - Mariana Mathias Lourenço
- Laboratory of Herpetology, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo CEP: 05503-900, Brazil
| | - Gabriel Levin
- NUCEL/NETCEM (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Vila Butantã, São Paulo CEP: 05360-130, Brazil
| | - Mari Cleide Sogayar
- NUCEL/NETCEM (Cell and Molecular Therapy Center), Internal Medicine Department, Medical School, University of São Paulo, Rua Pangaré, 100, Vila Butantã, São Paulo CEP: 05360-130, Brazil; Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo CEP: 05508-000, Brazil
| | - Kathleen Fernandes Grego
- Laboratory of Herpetology, Butantan Institute, Avenida Vital Brazil, 1500, São Paulo CEP: 05503-900, Brazil
| | - José Luiz Catão-Dias
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, Avenida Orlando Marques de Paiva, 87, São Paulo CEP: 05508-270, Brazil
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Trombetta-Lima M, Winnischofer SMB, Demasi MAA, Astorino Filho R, Carreira ACO, Wei B, de Assis-Ribas T, Konig MS, Bowman-Colin C, Oba-Shinjo SM, Marie SKN, Stetler-Stevenson W, Sogayar MC. Isolation and characterization of novel RECK tumor suppressor gene splice variants. Oncotarget 2016; 6:33120-33. [PMID: 26431549 PMCID: PMC4741753 DOI: 10.18632/oncotarget.5305] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 03/18/2015] [Accepted: 09/15/2015] [Indexed: 01/09/2023] Open
Abstract
Glioblastoma multiforme is the most common and lethal of the central nervous system glial-derived tumors. RECK suppresses tumor invasion by negatively regulating at least three members of the matrix metalloproteinase family: MMP-9, MMP-2, and MT1-MMP. A positive correlation has been observed between the abundance of RECK expression in tumor samples and a more favorable prognosis for patients with several types of tumors. In the present study, novel alternatively spliced variants of the RECK gene: RECK-B and RECK-I were isolated by RT-PCR and sequenced. The expression levels and profiles of these alternative RECK transcripts, as well as canonical RECK were determined in tissue samples of malignant astrocytomas of different grades and in a normal tissue RNA panel by qRT-PCR. Our results show that higher canonical RECK expression, accompanied by a higher canonical to alternative transcript expression ratio, positively correlates with higher overall survival rate after chemotherapeutic treatment of GBM patients. U87MG and T98G cells over-expressing the RECK-B alternative variant display higher anchorage-independent clonal growth and do not display modulation of, respectively, MMP-2 and MMP-9 expression. Our findings suggest that RECK transcript variants might have opposite roles in GBM biology and the ratio of their expression levels may be informative for the prognostic outcome of GBM patients.
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Affiliation(s)
- Marina Trombetta-Lima
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.,NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil
| | | | - Marcos Angelo Almeida Demasi
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.,NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil
| | - Renato Astorino Filho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.,NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil
| | - Ana Claudia Oliveira Carreira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.,NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil
| | - Beiyang Wei
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4605, USA
| | - Thais de Assis-Ribas
- NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil
| | | | - Christian Bowman-Colin
- NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil.,Dana Farber Cancer Institute, Harvard Medical School, Cambridge, MA, 02138, USA
| | - Sueli Mieko Oba-Shinjo
- NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil.,Departmento de Neurologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 01246-000, Brazil
| | - Suely Kazue Nagahashi Marie
- NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil.,Departmento de Neurologia, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 01246-000, Brazil
| | - William Stetler-Stevenson
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892-4605, USA
| | - Mari Cleide Sogayar
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo 05508-000 SP, Brazil.,NUCEL-NETCEM-Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, 05360-120, Brazil
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28
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Gonçalves F, de Moraes MS, Ferreira LB, Carreira ACO, Kossugue PM, Boaro LCC, Bentini R, Garcia CRDS, Sogayar MC, Arana-Chavez VE, Catalani LH. Combination of Bioactive Polymeric Membranes and Stem Cells for Periodontal Regeneration: In Vitro and In Vivo Analyses. PLoS One 2016; 11:e0152412. [PMID: 27031990 PMCID: PMC4816539 DOI: 10.1371/journal.pone.0152412] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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] [Received: 08/05/2015] [Accepted: 03/14/2016] [Indexed: 11/18/2022] Open
Abstract
Regeneration of periodontal tissues requires a concerted effort to obtain consistent and predictable results in vivo. The aim of the present study was to test a new family of bioactive polymeric membranes in combination with stem cell therapy for periodontal regeneration. In particular, the novel polyester poly(isosorbide succinate-co-L-lactide) (PisPLLA) was compared with poly(L-lactide) (PLLA). Both polymers were combined with collagen (COL), hydroxyapatite (HA) and the growth factor bone morphogenetic protein-7 (BMP7), and their osteoinductive capacity was evaluated via in vitro and in vivo experiments. Membranes composed of PLLA/COL/HA or PisPLLA/COL/HA were able to promote periodontal regeneration and new bone formation in fenestration defects in rat jaws. According to quantitative real-time polymerase chain reaction (qRT-PCR) and Alizarin Red assays, better osteoconductive capacity and increased extracellular mineralization were observed for PLLA/COL/HA, whereas better osteoinductive properties were associated with PisPLLA/COL/HA. We concluded that membranes composed of either PisPLLA/COL/HA or PLLA/COL/HA present promising results in vitro as well as in vivo and that these materials could be potentially applied in periodontal regeneration.
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Affiliation(s)
- Flávia Gonçalves
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
| | - Míriam Santos de Moraes
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–090
| | - Lorraine Braga Ferreira
- Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
| | - Ana Cláudia Oliveira Carreira
- NUCEL/NETCEM—Núcleo de Terapia Celular e Molecular, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil, 05360–130
| | - Patrícia Mayumi Kossugue
- NUCEL/NETCEM—Núcleo de Terapia Celular e Molecular, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil, 05360–130
| | - Letícia Cristina Cidreira Boaro
- Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
| | - Ricardo Bentini
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
| | - Célia Regina da Silva Garcia
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–090
| | - Mari Cleide Sogayar
- NUCEL/NETCEM—Núcleo de Terapia Celular e Molecular, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brasil, 05360–130
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
| | - Victor Elias Arana-Chavez
- Departamento de Biomateriais e Biologia Oral, Faculdade de Odontologia, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
| | - Luiz Henrique Catalani
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil, 05508–000
- * E-mail:
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29
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Forni MF, Ramos Maia Lobba A, Pereira Ferreira AH, Sogayar MC. Simultaneous Isolation of Three Different Stem Cell Populations from Murine Skin. PLoS One 2015; 10:e0140143. [PMID: 26462205 PMCID: PMC4604199 DOI: 10.1371/journal.pone.0140143] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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] [Received: 05/03/2015] [Accepted: 09/21/2015] [Indexed: 01/10/2023] Open
Abstract
The skin is a rich source of readily accessible stem cells. The level of plasticity afforded by these cells is becoming increasingly important as the potential of stem cells in Cell Therapy and Regenerative Medicine continues to be explored. Several protocols described single type stem cell isolation from skin; however, none of them afforded simultaneous isolation of more than one population. Herein, we describe the simultaneous isolation and characterization of three stem cell populations from the dermis and epidermis of murine skin, namely Epidermal Stem Cells (EpiSCs), Skin-derived Precursors (SKPs) and Mesenchymal Stem Cells (MSCs). The simultaneous isolation was possible through a simple protocol based on culture selection techniques. These cell populations are shown to be capable of generating chondrocytes, adipocytes, osteocytes, terminally differentiated keratinocytes, neurons and glia, rendering this protocol suitable for the isolation of cells for tissue replenishment and cell based therapies. The advantages of this procedure are far-reaching since the skin is not only the largest organ in the body, but also provides an easily accessible source of stem cells for autologous graft.
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Affiliation(s)
- Maria Fernanda Forni
- Núcleo de Terapia Celular e Molecular (NUCEL/NETCEM), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, 05360-130 SP, Brasil
- Instituto de Química, Departamento de Bioquímica, Universidade de São Paulo, São Paulo, 05508-000 SP, Brasil
| | - Aline Ramos Maia Lobba
- Núcleo de Terapia Celular e Molecular (NUCEL/NETCEM), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, 05360-130 SP, Brasil
| | - Alexandre Hamilton Pereira Ferreira
- Núcleo de Terapia Celular e Molecular (NUCEL/NETCEM), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, 05360-130 SP, Brasil
| | - Mari Cleide Sogayar
- Núcleo de Terapia Celular e Molecular (NUCEL/NETCEM), Departamento de Clínica Médica, Faculdade de Medicina, Universidade de São Paulo, São Paulo, 05360-130 SP, Brasil
- Instituto de Química, Departamento de Bioquímica, Universidade de São Paulo, São Paulo, 05508-000 SP, Brasil
- * E-mail:
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Carreira ACO, Zambuzzi WF, Rossi MC, Astorino Filho R, Sogayar MC, Granjeiro JM. Bone Morphogenetic Proteins: Promising Molecules for Bone Healing, Bioengineering, and Regenerative Medicine. Vitam Horm 2015; 99:293-322. [PMID: 26279381 DOI: 10.1016/bs.vh.2015.06.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Bone morphogenetic proteins (BMPs), glycoproteins secreted by some cells, are members of the TGF-β superfamily that have been implicated in a wide variety of roles. Currently, about 20 different BMPs have been identified and grouped into subfamilies, according to similarities with respect to their amino acid sequences. It has been shown that BMPs are secreted growth factors involved in mesenchymal stem cell differentiation, also being reported to control the differentiation of cancer stem cells. BMPs initiate signaling from the cell surface by binding to two different receptors (R: Type I and II). The heterodimeric formation of type I R and II R may occur before or after BMP binding, inducing signal transduction pathways through SMADs. BMPs may also signal through SMAD-independent pathways via mitogen-activated protein kinases (ERK, p38MAPKs, JNK). BMPs may act in an autocrine or paracrine manner, being regulated by specific antagonists, namely: noggin and chordin. Genetic engineering allows the production of large amounts of BMPs for clinical use, and clinical trials have shown the benefits of FDA-approved recombinant human BMPs 2 and 7. Several materials from synthetic to natural sources have been tested as BMP carriers, ranging from hydroxyapatite, and organic polymers to collagen. Bioactive membranes doped with BMPs are promising options, acting to accelerate and enhance osteointegration. The development of smart materials, mainly based on biopolymers and bone-like calcium phosphates, appears to provide an attractive alternative for delivering BMPs in an adequately controlled fashion. BMPs have revealed a promising future for the fields of Bioengineering and Regenerative Medicine. In this chapter, we review and discuss the data on BMP structure, mechanisms of action, and possible clinical applications.
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Affiliation(s)
- Ana Claudia Oliveira Carreira
- NUCEL-NETCEM (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Willian Fernando Zambuzzi
- Department of Chemistry and Biochemistry, Biosciences Institute, UNESP, Universidade Estadual Paulista, Botucatu, Brazil
| | - Mariana Correa Rossi
- Department of Chemistry and Biochemistry, Biosciences Institute, UNESP, Universidade Estadual Paulista, Botucatu, Brazil
| | - Renato Astorino Filho
- NUCEL-NETCEM (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil
| | - Mari Cleide Sogayar
- NUCEL-NETCEM (Cell and Molecular Therapy Center), Internal Medicine Department, School of Medicine, University of São Paulo, São Paulo, Brazil; Chemistry Institute, Biochemistry Department, São Paulo, Brazil
| | - José Mauro Granjeiro
- Bioengineering Division, National Institute of Metrology, Quality, and Technology, Duque de Caxias, Brazil; Department of Dental Materials, Dental School, Fluminense Federal University, Niteroi, Brazil.
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31
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O Carreira AC, Halcsik E, de Sá PM, Zattar F, Granjeiro JM, Sogayar MC. Recombinant human BMPs 2 and 4 expressed in mammalian cells aiming at bone tissue engineering and stem cell proliferation and differentiation. BMC Proc 2014. [PMCID: PMC4204353 DOI: 10.1186/1753-6561-8-s4-p84] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Carreira AC, Alves GG, Zambuzzi WF, Sogayar MC, Granjeiro JM. Bone Morphogenetic Proteins: structure, biological function and therapeutic applications. Arch Biochem Biophys 2014; 561:64-73. [PMID: 25043976 DOI: 10.1016/j.abb.2014.07.011] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [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: 04/07/2014] [Revised: 07/01/2014] [Accepted: 07/08/2014] [Indexed: 01/09/2023]
Abstract
Bone Morphogenetic Proteins (BMPs) are multifunctional secreted cytokines, which belong to the TGF-β superfamily. These glycoproteins act as a disulfide-linked homo- or heterodimers, being potent regulators of bone and cartilage formation and repair, cell proliferation during embryonic development and bone homeostasis in the adult. BMPs are promising molecules for tissue engineering and bone therapy. The present review discusses this family of proteins, their structure and biological function, their therapeutic applications and drawbacks, their effects on mesenchymal stem cells differentiation, and the cell signaling pathways involved in this process.
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Affiliation(s)
- Ana Claudia Carreira
- Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo 05508-000, Brazil; NUCEL-NETCEM Cell and Molecular Therapy Center, Medical Clinics Department, School of Medicine, University of São Paulo, São Paulo, 05508-000 SP, Brazil.
| | - Gutemberg Gomes Alves
- Cell and Molecular Biology Department, Institute of Biology, Fluminense Federal University, Niterói, RJ, Brazil.
| | - William Fernando Zambuzzi
- Department of Chemistry and Biochemistry, Biosciences Institute, UNESP: Universidade Estadual Paulista, Botucatu, SP, Brazil.
| | - Mari Cleide Sogayar
- Chemistry Institute, Biochemistry Department, University of São Paulo, São Paulo 05508-000, Brazil; NUCEL-NETCEM Cell and Molecular Therapy Center, Medical Clinics Department, School of Medicine, University of São Paulo, São Paulo, 05508-000 SP, Brazil.
| | - José Mauro Granjeiro
- Bioengineering Division, National Institute of Metrology, Quality, and Technology, Duque de Caxias, RJ, Brazil; Department of Dental Materials, Dental School, Fluminense Federal University, Niteroi, RJ, Brazil.
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Molina ES, Fujita A, Sogayar MC, Demasi MA. A quantitative and humane tail bleeding assay for efficacy evaluation of antihaemophilic factors in haemophilia A mice. Haemophilia 2014; 20:e392-8. [PMID: 24975823 DOI: 10.1111/hae.12484] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2014] [Indexed: 01/28/2023]
Abstract
The tail bleeding model using haemophilic mice has been used as one of the standard assays for efficacy evaluation of novel antihaemophilic therapies at the preclinical level. A number of different configurations and endpoints have been proposed in the literature for this model, hindering interlaboratory comparisons. A particular configuration, known as the tail bleeding survival assay (TBS), adopted by several groups, involves measuring the ability of conscious haemophilic mice to survive exsanguination following tail transection. Major limitations to this configuration include ethical constraints and impaired quantitative determinations. The aim of this study was to standardize and validate a quantitative haemostatic assay for evaluation of antihaemophilic therapies employing an alternative to TBS, which involves a more humane endpoint associated with stable clot formation. Haemophilic mice were treated with vehicle or different doses of two antihaemophilic reference products licensed in Brazil. The haemostatic response was evaluated by our quantitative tail bleeding haemostatic assay (qTBA) over a period of 120 min and then quantified by dose-response modelling. We demonstrate that our qTBA method allows a direct relationship between the number of animals which achieved full haemostatic response and the dosage of both antihaemophilic factors evaluated over 120 min. In addition, the method sensitivity is suitable to demonstrate the conversion from a severe to a moderate haemophilia phenotype. Our proposed qTBA is easy to implement and constitutes an alternative and more ethical endpoint, which could be effectively used as a surrogate to the commonly employed survival endpoint, allowing quantitative haemostatic response evaluation associated with stable clot formation.
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Affiliation(s)
- E S Molina
- Department of Biochemistry Chemistry Institute, NUCEL-NETCEM, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
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Abstract
Tissue engineering currently constitutes a complex, multidisciplinary field exploring ideal sources of cells in combination with scaffolds or delivery systems in order to form a new, functional organ to replace native organ lack or loss. Short bowel syndrome (SBS) is a life-threatening condition with high morbidity and mortality rates in children. Current therapeutic strategies consist of costly and risky allotransplants that demand lifelong immunosuppression. A promising alternative is the implantation of autologous organoid units (OU) to create a tissue-engineered small intestine (TESI). This strategy is proven to be stem cell and mesenchyme dependent. Intestinal stem cells (ISCs) are located at the base of the crypt and are responsible for repopulating the cycling mucosa up to the villus tip. The stem cell niche governs the biology of ISCs and, together with the rest of the epithelium, communicates with the underlying mesenchyme to sustain intestinal homeostasis. Biopharmaceuticals are broadly used in the clinic to activate or enhance known signaling pathways and may greatly contribute to the development of a full-thickness intestine by increasing mucosal surface area, improving blood supply, and determining stem cell fate. This review will focus on tissue engineering as a means of building the new small intestine, highlighting the importance of stem cells and recombinant peptide growth factors as biopharmaceuticals.
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Affiliation(s)
| | - Mari Cleide Sogayar
- Biochemistry Department, Chemistry Institute, University of São Paulo, Brazil; Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, Brazil
| | - Tracy Cannon Grikscheit
- Developmental Biology and Regenerative Medicine Program, Saban Research Institute, Children׳s Hospital Los Angeles, Los Angeles, California.
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Stumm CL, Halcsik E, Landgraf RG, Camara NOS, Sogayar MC, Jancar S. Lung remodeling in a mouse model of asthma involves a balance between TGF-β1 and BMP-7. PLoS One 2014; 9:e95959. [PMID: 24781156 PMCID: PMC4004563 DOI: 10.1371/journal.pone.0095959] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 04/01/2014] [Indexed: 11/18/2022] Open
Abstract
A key event in chronic allergic asthma is the TGF-β-induced activation of fibroblasts into α-SMA-positive myofibroblasts which synthesize type-I collagen. In the present study we investigated the effect of the anti-fibrotic molecule BMP-7 in asthma. Balb/c mice were immunized i.p. with ovalbumin in alum and challenged every 2 days with ovalbumin aerosol (two or six challenges for acute and chronic protocols, respectively). The lung was evaluated for: α-SMA and type-I collagen by immunohistochemistry; BMP-7 and TGF- β1 gene expression by qRT-PCR; type-I collagen and Smads 2 and 3 by immunoblotting; mucus by PSA staining. Type-I collagen around bronchi, α-SMA, mucus secretion, TGF- β1 and BMP-7 gene expression were all increased in asthma. The TGF- β1/BMP-7 ratio was higher in the chronic group and correlated with higher levels of collagen. Fibroblasts isolated from asthmatic and healthy lungs produced type-I collagen upon stimulation with TGF- β1 via phosphorylation of Smad-2, Smad-3. Pre-treatment of the fibroblasts with BMP-7 reduced collagen production and Smads phosphorylation. Intranasal treatment of asthmatic mice with recombinant BMP-7 during the immunization protocol reduced lung inflammation and type I collagen deposition. These results suggest a protective role for BMP-7 in lung allergic inflammation, opposing the pro-fibrotic effects of TGF- β1.
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Affiliation(s)
| | - Erik Halcsik
- Department of Biochemistry, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - Niels Olsen Saraiva Camara
- Department of Immunology, University of Sao Paulo, Sao Paulo, SP, Brazil; Division of Nephrology, Federal University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - Sonia Jancar
- Department of Immunology, University of Sao Paulo, Sao Paulo, SP, Brazil
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Nogueira AB, Sogayar MC, Colquhoun A, Siqueira SA, Nogueira AB, Marchiori PE, Teixeira MJ. Existence of a potential neurogenic system in the adult human brain. J Transl Med 2014; 12:75. [PMID: 24655332 PMCID: PMC3998109 DOI: 10.1186/1479-5876-12-75] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [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: 12/25/2013] [Accepted: 03/13/2014] [Indexed: 01/17/2023] Open
Abstract
Background Prevailingly, adult mammalian neurogenesis is thought to occur in discrete, separate locations known as neurogenic niches that are best characterized in the subgranular zone (SGZ) of the dentate gyrus and in the subventricular zone (SVZ). The existence of adult human neurogenic niches is controversial. Methods The existence of neurogenic niches was investigated with neurogenesis marker immunostaining in histologically normal human brains obtained from autopsies. Twenty-eight adult temporal lobes, specimens from limbic structures and the hypothalamus of one newborn and one adult were examined. Results The neural stem cell marker nestin stained circumventricular organ cells and the immature neuronal marker doublecortin (DCX) stained hypothalamic and limbic structures adjacent to circumventricular organs; both markers stained a continuous structure running from the hypothalamus to the hippocampus. The cell proliferation marker Ki-67 was detected predominately in structures that form the septo-hypothalamic continuum. Nestin-expressing cells were located in the fimbria-fornix at the insertion of the choroid plexus; ependymal cells in this structure expressed the putative neural stem cell marker CD133. From the choroidal fissure in the temporal lobe, a nestin-positive cell layer spread throughout the SVZ and subpial zone. In the subpial zone, a branch of this layer reached the hippocampal sulcus and ended in the SGZ (principally in the newborn) and in the subiculum (principally in the adults). Another branch of the nestin-positive cell layer in the subpial zone returned to the optic chiasm. DCX staining was detected in the periventricular and middle hypothalamus and more densely from the mammillary body to the subiculum through the fimbria-fornix, thus running through the principal neuronal pathway from the hippocampus to the hypothalamus. The column of the fornix forms part of this pathway and appears to coincide with the zone previously identified as the human rostral migratory stream. Partial co-labeling with DCX and the neuronal marker βIII-tubulin was also observed. Conclusions Collectively, these findings suggest the existence of an adult human neurogenic system that rises from the circumventricular organs and follows, at minimum, the circuitry of the hypothalamus and limbic system.
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Affiliation(s)
- Adriano Barreto Nogueira
- Division of Neurosurgery Clinic, Hospital das Clínicas, Faculty of Medicine, University of São Paulo, Avenida Dr, Eneas de Carvalho Aguiar 255, 05403-900 São Paulo, Brazil.
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Carreira AC, Lojudice FH, Halcsik E, Navarro RD, Sogayar MC, Granjeiro JM. Bone morphogenetic proteins: facts, challenges, and future perspectives. J Dent Res 2014; 93:335-45. [PMID: 24389809 DOI: 10.1177/0022034513518561] [Citation(s) in RCA: 229] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Bone morphogenetic proteins (BMPs) are members of the TGF-β superfamily, acting as potent regulators during embryogenesis and bone and cartilage formation and repair. Cell and molecular biology approaches have unveiled the great complexity of BMP action, later confirmed by transgenic animal studies. Genetic engineering allows for the production of large amounts of BMPs for clinical use, but they have systematically been associated with a delivery system, such as type I collagen and calcium phosphate ceramics, to ensure controlled release and to maximize their biological activity at the surgical site, avoiding systemic diffusion. Clinical orthopedic studies have shown the benefits of FDA-approved recombinant human BMPs (rhBMPs) 2 and 7, but side effects, such as swelling, seroma, and increased cancer risk, have been reported, probably due to high BMP dosage. Several studies have supported the use of BMPs in periodontal regeneration, sinus lift bone-grafting, and non-unions in oral surgery. However, the clinical use of BMPs is growing mainly in off-label applications, with robust evidence to ascertain rhBMPs' safety and efficacy through well-designed, randomized, and double-blind clinical trials. Here we review and discuss the critical data on BMP structure, mechanisms of action, and possible clinical applications.
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Affiliation(s)
- A C Carreira
- Biochemistry Department, Chemistry Institute, and Cell and Molecular Therapy Center NUCEL-NETCEM, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
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Halcsik E, Forni MF, Fujita A, Verano-Braga T, Jensen ON, Sogayar MC. New insights in osteogenic differentiation revealed by mass spectrometric assessment of phosphorylated substrates in murine skin mesenchymal cells. BMC Cell Biol 2013; 14:47. [PMID: 24148232 PMCID: PMC3819743 DOI: 10.1186/1471-2121-14-47] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [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: 04/16/2013] [Accepted: 10/09/2013] [Indexed: 01/15/2023] Open
Abstract
Background Bone fractures and loss represent significant costs for the public health system and often affect the patients quality of life, therefore, understanding the molecular basis for bone regeneration is essential. Cytokines, such as IL-6, IL-10 and TNFα, secreted by inflammatory cells at the lesion site, at the very beginning of the repair process, act as chemotactic factors for mesenchymal stem cells, which proliferate and differentiate into osteoblasts through the autocrine and paracrine action of bone morphogenetic proteins (BMPs), mainly BMP-2. Although it is known that BMP-2 binds to ActRI/BMPR and activates the SMAD 1/5/8 downstream effectors, little is known about the intracellular mechanisms participating in osteoblastic differentiation. We assessed differences in the phosphorylation status of different cellular proteins upon BMP-2 osteogenic induction of isolated murine skin mesenchymal stem cells using Triplex Stable Isotope Dimethyl Labeling coupled with LC/MS. Results From 150 μg of starting material, 2,264 proteins were identified and quantified at five different time points, 235 of which are differentially phosphorylated. Kinase motif analysis showed that several substrates display phosphorylation sites for Casein Kinase, p38, CDK and JNK. Gene ontology analysis showed an increase in biological processes related with signaling and differentiation at early time points after BMP2 induction. Moreover, proteins involved in cytoskeleton rearrangement, Wnt and Ras pathways were found to be differentially phosphorylated during all timepoints studied. Conclusions Taken together, these data, allow new insights on the intracellular substrates which are phosphorylated early on during differentiation to BMP2-driven osteoblastic differentiation of skin-derived mesenchymal stem cells.
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Affiliation(s)
| | | | | | | | | | - Mari Cleide Sogayar
- Chemistry Institute, Department of Biochemistry, Cell and Molecular Therapy Center (NUCEL/NETCEM), School of Medicine, University of São Paulo, São Paulo 05508-000, SP, Brazil.
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Barcala Tabarrozzi AE, Castro CN, Dewey RA, Sogayar MC, Labriola L, Perone MJ. Cell-based interventions to halt autoimmunity in type 1 diabetes mellitus. Clin Exp Immunol 2013; 171:135-46. [PMID: 23286940 DOI: 10.1111/cei.12019] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/22/2012] [Indexed: 12/13/2022] Open
Abstract
Type 1 diabetes mellitus (T1DM) results from death of insulin-secreting β cells mediated by self-immune cells, and the consequent inability of the body to maintain insulin levels for appropriate glucose homeostasis. Probably initiated by environmental factors, this disease takes place in genetically predisposed individuals. Given the autoimmune nature of T1DM, therapeutics targeting immune cells involved in disease progress have been explored over the last decade. Several high-cost trials have been attempted to prevent and/or reverse T1DM. Although a definitive solution to cure T1DM is not yet available, a large amount of information about its nature and development has contributed greatly to both the improvement of patient's health care and design of new treatments. In this study, we discuss the role of different types of immune cells involved in T1DM pathogenesis and their therapeutic potential as targets and/or modified tools to treat patients. Recently, encouraging results and new approaches to sustain remnant β cell mass and to increase β cell proliferation by different cell-based means have emerged. Results coming from ongoing clinical trials employing cell therapy designed to arrest T1DM will probably proliferate in the next few years. Strategies under consideration include infusion of several types of stem cells, dendritic cells and regulatory T cells, either manipulated genetically ex vivo or non-manipulated. Their use in combination approaches is another therapeutic alternative. Cell-based interventions, without undesirable side effects, directed to block the uncontrollable autoimmune response may become a clinical reality in the next few years for the treatment of patients with T1DM.
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Affiliation(s)
- A E Barcala Tabarrozzi
- Instituto de Investigación en Biomedicina de Buenos Aires (IBioBA), CONICET, Instituto Partner de la Sociedad Max Planck, Buenos Aires
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Gabanyi I, Lojudice FH, Kossugue PM, Rebelato E, Demasi MA, Sogayar MC. VP22 herpes simplex virus protein can transduce proteins into stem cells. Braz J Med Biol Res 2013; 46:121-7. [PMID: 23369972 PMCID: PMC3854363 DOI: 10.1590/1414-431x20122148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 07/13/2012] [Accepted: 10/02/2012] [Indexed: 12/02/2022] Open
Abstract
The type I herpes simplex virus VP22 tegument protein is abundant and well known
for its ability to translocate proteins from one cell to the other. In spite of
some reports questioning its ability to translocate proteins by attributing the
results observed to fixation artifacts or simple attachment to the cell
membrane, VP22 has been used to deliver several proteins into different cell
types, triggering the expected cell response. However, the question of the
ability of VP22 to enter stem cells has not been addressed. We investigated
whether VP22 could be used as a tool to be applied in stem cell research and
differentiation due to its capacity to internalize other proteins without
altering the cell genome. We generated a VP22.eGFP construct to evaluate whether
VP22 could be internalized and carry another protein with it into two different
types of stem cells, namely adult human dental pulp stem cells and mouse
embryonic stem cells. We generated a VP22.eGFP fusion protein and demonstrated
that, in fact, it enters stem cells. Therefore, this system may be used as a
tool to deliver various proteins into stem cells, allowing stem cell research,
differentiation and the generation of induced pluripotent stem cells in the
absence of genome alterations.
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Affiliation(s)
- I Gabanyi
- Universidade de São Paulo, Centro de Terapia Celular e Molecular, Departamento de Bioquímica, Instituto de Química, São Paulo, SP, Brasil
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Lobba ARM, Forni MF, Carreira ACO, Sogayar MC. Differential expression of CD90 and CD14 stem cell markers in malignant breast cancer cell lines. Cytometry A 2012; 81:1084-91. [PMID: 23090904 DOI: 10.1002/cyto.a.22220] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 09/19/2012] [Accepted: 09/21/2012] [Indexed: 01/15/2023]
Abstract
The recently emerged concept of cancer stem cell (CSC) has led to a new hypothesis on the basis for tumor progression. Basically, the CSC theory hypothesizes the presence of a hierarchically organized and relatively rare cell population, which is responsible for tumor initiation, self-renewal, and maintenance, in addition to accumulation of mutation and resistance to chemotherapy. CSCs have recently been described in breast cancer. Different genetic markers have been used to isolate breast CSCs, none of which have been correlated with the tumorigenicity or metastatic potential of the cells, limiting their precise characterization and clinical application in the development of therapeutic protocols. Here, we sought for subpopulations of CSCs by analyzing 10 judiciously chosen stem cell markers in a normal breast cell line (MCF10-A) and in four human breast cancer cell lines (MCF-7, MDA-MB-231, MDA-MB-435, and Hs578-T) displaying different degrees of metastatic and invasiveness potential. We were able to identify two markers, which are differentially expressed in nontumorigenic versus tumor cells. The CD90 marker was highly expressed in the malignant cell lines. Interestingly, the CD14 molecule displayed higher expression levels in the nontumorigenic cell line. Therefore, we demonstrated that these two markers, which are more commonly used to isolate and characterize stem cells, are differentially expressed in breast tumor cells, when compared with nontumorigenic breast cells.
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Affiliation(s)
- A R M Lobba
- Biochemistry Department, Chemistry Institute, Cell and Molecular Therapy Center (NUCEL), University of São Paulo, 05508-000 São Paulo, Brazil
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Forni MF, Loureiro RR, Cristovam PC, Bonatti JA, Sogayar MC, Gomes JÁP. Comparison Between Different Biomaterial Scaffolds for Limbal-Derived Stem Cells Growth and Enrichment. Curr Eye Res 2012; 38:27-34. [DOI: 10.3109/02713683.2012.733053] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Gomes LR, Terra LF, Sogayar MC, Labriola L. Epithelial-mesenchymal transition: implications in cancer progression and metastasis. Curr Pharm Biotechnol 2012; 12:1881-90. [PMID: 21470131 DOI: 10.2174/138920111798377102] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Accepted: 06/01/2010] [Indexed: 11/22/2022]
Abstract
During the past few years, Epithelial-Mesenchymal Transition (EMT) has emerged as one of the most hot spots in clinical research. Its existence in human tumors can form the basis for explaining characteristics of cancer progression and metastasis, as well as certain cases of drug resistance and relapses after treatment. These cellular responses are tightly regulated by intracellular signaling pathways evoked by humoral factors that include growth factors, chemokines and cytokines. Indeed, several gene regulatory programs known to promote EMT during development have recently been discovered to play key roles in cancer progression. A deeper understanding of the cellular and molecular basis of these different programs should aid in both the development of better diagnosis methods, as well as of specific treatments for invasive cancer. In this review we set out to summarize recent novel insights into the molecular players underlying EMT and its relation with cancer progression and metastasis.
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Affiliation(s)
- L R Gomes
- Departamento de Bioquímica, Instituto de Química –USP, São Paulo, Brasil
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Terra LF, Garay-Malpartida MH, Wailemann RAM, Sogayar MC, Labriola L. Recombinant human prolactin promotes human beta cell survival via inhibition of extrinsic and intrinsic apoptosis pathways. Diabetologia 2011; 54:1388-97. [PMID: 21394492 DOI: 10.1007/s00125-011-2102-z] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 02/04/2011] [Indexed: 11/25/2022]
Abstract
AIMS/HYPOTHESIS Transplantation of pancreatic islets constitutes a promising alternative treatment for type 1 diabetes. However, it is limited by the shortage of organ donors. Previous results from our laboratory have demonstrated beneficial effects of recombinant human prolactin (rhPRL) treatment on beta cell cultures. We therefore investigated the role of rhPRL action in human beta cell survival, focusing on the molecular mechanisms involved in this process. METHODS Human pancreatic islets were isolated using an automated method. Islet cultures were pre-treated in the absence or presence of rhPRL and then subjected to serum starvation or cytokine treatment. Beta cells were labelled with Newport green and apoptosis was evaluated using flow cytometry analysis. Levels of BCL2 gene family members were studied by quantitative RT-PCR and western blot. Caspase-8, -9 and -3 activity, as well as nitric oxide production, were evaluated by fluorimetric assays. RESULTS The proportion of apoptotic beta cells was significantly lowered in the presence of rhPRL under both cell death-induced conditions. We also demonstrated that cytoprotection may involve an increase of BCL2/BAX ratio, as well as inhibition of caspase-8, -9 and -3. CONCLUSIONS/INTERPRETATION Our study provides relevant evidence for a protective effect of lactogens on human beta cell apoptosis. The results also suggest that the improvement of cell survival may involve, at least in part, inhibition of cell death pathways controlled by the BCL2 gene family members. These findings are highly relevant for improvement of the islet isolation procedure and for clinical islet transplantation.
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Affiliation(s)
- L F Terra
- NUCEL, University of São Paulo, São Paulo, Brazil
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Lobba ARM, Forni MFPAD, Perozzi C, Carreira ACO, Labriola L, Sogayar MC. Abstract 3872: Differentially expressed stem cell markers in breast cancer stem cells. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-3872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The recently emerged concept of cancer stem cell (CSC) has led to a new hypothesis about tumor progression. Basically, the CSC theory hypothesizes the presence of a hierarchically organized, relatively rare population of cells, which is responsible for tumor initiation, self-renewal and maintenance, in addition to mutation accumulation and resistance to chemotherapy. CSCs have recently been described in breast cancer. Different markers have been used to isolate breast cancer stem cells; however, none of these proved to be very efficient. Furthermore, the lack of specific markers limits a precise characterization of these cells and their clinical application, especially in the development of therapeutic protocols. In the present work, we set out to search for enriched subpopulations of CSCs. To this end, we investigated the profile of different surface markers in normal and tumoral breast cancer cell lines. We analyzed the expression of cd44, cd31, cd90, cd200, cd14, cd34, cd31, cd105, c-kit, abcg2 and cd29 in MCF10-A, MCF-7, MDA-MB-231, MDA-MB-435 and Hs578-T cells lines using quantitative RT-PCR. As a result of this effort, we were able to identify two distinct markers presenting differential expression between normal and tumor cells. While one marker was increased in the malignant cells lines, the other one presented higher levels of expression in the normal cell line. Based on this study, we propose a new set of markers, which should allow both isolation and characterization of breast cancer stem cells. Upon informed consent, a number of normal and tumor human breast samples are currently being collected for the final proof of concept. These results contribute not only to a deeper understanding of the Biology of CSCs, but, also, to the development of optimized therapeutical approaches to breast cancer.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 3872. doi:10.1158/1538-7445.AM2011-3872
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Fujita A, Sato JR, Angelo M, Demasi A, Yamaguchi R, Shimamura T, Ferreira CE, Sogayar MC, Miyano S. Inferring contagion in regulatory networks. IEEE/ACM Trans Comput Biol Bioinform 2011; 8:570-576. [PMID: 20479499 DOI: 10.1109/tcbb.2010.40] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Several gene regulatory network models containing concepts of directionality at the edges have been proposed. However, only a few reports have an interpretable definition of directionality. Here, differently from the standard causality concept defined by Pearl, we introduce the concept of contagion in order to infer directionality at the edges, i.e., asymmetries in gene expression dependences of regulatory networks. Moreover, we present a bootstrap algorithm in order to test the contagion concept. This technique was applied in simulated data and, also, in an actual large sample of biological data. Literature review has confirmed some genes identified by contagion as actually belonging to the TP53 pathway.
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Affiliation(s)
- André Fujita
- A. Fujita is with the Computational Science Research Program, RIKEN, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan.
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de Oliveira Demarchi ACC, Zambuzzi WF, Paiva KBS, da Silva-Valenzuela MDG, Nunes FD, de Cássia Sávio Figueira R, Sasahara RM, Demasi MAA, Winnischofer SMB, Sogayar MC, Granjeiro JM. Development of secondary palate requires strict regulation of ECM remodeling: sequential distribution of RECK, MMP-2, MMP-3, and MMP-9. Cell Tissue Res 2010; 340:61-9. [PMID: 20165883 DOI: 10.1007/s00441-010-0931-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2009] [Accepted: 01/15/2010] [Indexed: 11/29/2022]
Abstract
We have evaluated RECK (reversion-inducing-cysteine-rich protein with Kazal motifs), MMP-2 (matrix metalloproteinase-2), MMP-3, and MMP-9 involvement during palate development in mice by using various techniques. Immunohistochemical features revealed the distribution of RECK, MMP-2, and MMP-3 in the mesenchymal tissue and in the midline epithelial seam at embryonic day 13 (E13), MMPs-2, -3, and -9 being particularly expressed at E14 and E14.5. In contrast, RECK was weakly immunostained at these times. Involvement of MMPs was validated by measuring not only their protein expression, but also their activity (zymograms). In situ hybridization signal (ISH) for RECK transcript was distributed in mesenchymal and epithelial regions within palatal shelves at all periods evaluated. Importantly, the results from ISH analysis were in accord with those obtained by real-time polymerase chain reaction. The expression of RECK was found to be temporally regulated, which suggested possible roles in palatal ontogeny. Taken together, our results clearly show that remodeling of the extracellular matrix is finely modulated during secondary palate development and occurs in a sequential manner.
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Buchanan C, Stigliano I, Garay-Malpartida HM, Rodrigues Gomes L, Puricelli L, Sogayar MC, Bal de Kier Joffé E, Peters MG. Glypican-3 reexpression regulates apoptosis in murine adenocarcinoma mammary cells modulating PI3K/Akt and p38MAPK signaling pathways. Breast Cancer Res Treat 2010; 119:559-74. [PMID: 19288189 DOI: 10.1007/s10549-009-0362-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Accepted: 02/28/2009] [Indexed: 10/21/2022]
Abstract
Glypican-3 (GPC3) is a proteoglycan involved in proliferation and cell survival. Several reports demonstrated that GPC3 is downregulated in some tumors, such as breast cancer. Previously, we determined that GPC3 reexpression in the murine mammary adenocarcinoma LM3 cells induced an impairment of their invasive and metastatic capacities, associated with a decrease of their motility and an increase of their cell death. We demonstrated that GPC3 inhibits canonical Wnt signaling, as well as it activates non canonical pathway. Now, we identified signaling pathways responsible for the pro-apoptotic role of GPC3 in LM3 cells. We found for the first time that GPC3 inhibits the PI3K/Akt anti-apoptotic pathway while it stimulates the p38MAPK stress-activated one. We report a concomitant modulation of CDK inhibitors as well as of pro- and anti-apoptotic molecules. Our results provide new clues regarding the mechanism involved in the modulation induced by GPC3 of mammary tumor cell growth and survival.
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Affiliation(s)
- C Buchanan
- Cell Biology Department, Research Area, Institute of Oncology Angel H. Roffo, University of Buenos Aires, Av. San Martín 5481, C1417DTB Buenos Aires, Argentina
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Barbosa LF, Cerqueira FM, Macedo AFA, Garcia CCM, Angeli JPF, Schumacher RI, Sogayar MC, Augusto O, Carrì MT, Di Mascio P, Medeiros MHG. Increased SOD1 association with chromatin, DNA damage, p53 activation, and apoptosis in a cellular model of SOD1-linked ALS. Biochim Biophys Acta Mol Basis Dis 2010; 1802:462-71. [PMID: 20097285 DOI: 10.1016/j.bbadis.2010.01.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 12/23/2009] [Accepted: 01/15/2010] [Indexed: 12/16/2022]
Abstract
Mutations in the gene encoding cytosolic Cu,Zn-superoxide dismutase (SOD1) have been linked to familial amyotrophic lateral sclerosis (FALS). However the molecular mechanisms of motor neuron death are multi-factorial and remain unclear. Here we examined DNA damage, p53 activity and apoptosis in SH-SY5Y human neuroblastoma cells transfected to achieve low-level expression of either wild-type or mutant Gly(93)-->Ala (G93A) SOD1, typical of FALS. DNA damage was investigated by evaluating the levels of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo) and DNA strand breaks. Significantly higher levels of DNA damage, increased p53 activity, and a greater percentage of apoptotic cells were observed in SH-SY5Y cells transfected with G93A SOD1 when compared to cells overexpressing wild-type SOD1 and untransfected cells. Western blot, FACS, and confocal microscopy analysis demonstrated that G93A SOD1 is present in the nucleus in association with DNA. Nuclear G93A SOD1 has identical superoxide dismutase activity but displays increased peroxidase activity when compared to wild-type SOD1. These results indicate that the G93A mutant SOD1 association with DNA might induce DNA damage and trigger the apoptotic response by activating p53. This toxic activity of mutant SOD1 in the nucleus may play an important role in the complex mechanisms associated with motor neuron death observed in ALS pathogenesis.
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Affiliation(s)
- Livea F Barbosa
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brazil
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Mantovani MDC, da Conceição MM, Ferreira AJS, Labriola L, dos Santos PB, Tonso A, Pereira CA, El-Dorry H, Sogayar MC. Immobilization of primary cultures of insulin-releasing human pancreatic cells. Islets 2009; 1:224-31. [PMID: 21099276 DOI: 10.4161/isl.1.3.9695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Transplantation of pancreatic islets isolated from organ donors constitutes a promising alternative treatment for type1 Diabetes, however, it is severely limited by the shortage of organ donors. Ex-vivo islet cell cultures appear as an attractive but still elusive approach for curing type 1 Diabetes. It has recently been shown that, even in the absence of fibrotic overgrowth, several factors, such as insufficient nutrition of the islet core, represent a major barrier for long-term survival of islets grafts. The use of immobilized dispersed cells may contribute to solve this problem due to conceivably easier nutritional and oxygen support to the cells. Therefore, we set out to establish an immobilization method for primary cultures of human pancreatic cells by adsorption onto microcarriers (MCs). Dispersed human islets cells were seeded onto Cytodex1 microcarriers and cultured in bioreactors for up to eight days. The cell number increased and islet cells maintained their insulin secretion levels throughout the time period studied. Moreover, the cells also presented a tendency to cluster upon five days culturing. Therefore, this procedure represents a useful tool for controlled studies on islet cells physiology and, also, for biotechnological applications.
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