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Maraghechi P, Aponte MTS, Ecker A, Lázár B, Tóth R, Szabadi NT, Gócza E. Pluripotency-Associated microRNAs in Early Vertebrate Embryos and Stem Cells. Genes (Basel) 2023; 14:1434. [PMID: 37510338 PMCID: PMC10379376 DOI: 10.3390/genes14071434] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/30/2023] Open
Abstract
MicroRNAs (miRNAs), small non-coding RNA molecules, regulate a wide range of critical biological processes, such as proliferation, cell cycle progression, differentiation, survival, and apoptosis, in many cell types. The regulatory functions of miRNAs in embryogenesis and stem cell properties have been extensively investigated since the early years of miRNA discovery. In this review, we will compare and discuss the impact of stem-cell-specific miRNA clusters on the maintenance and regulation of early embryonic development, pluripotency, and self-renewal of embryonic stem cells, particularly in vertebrates.
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Affiliation(s)
- Pouneh Maraghechi
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
| | - Maria Teresa Salinas Aponte
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
| | - András Ecker
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
| | - Bence Lázár
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
- National Centre for Biodiversity and Gene Conservation, Institute for Farm Animal Gene Conservation (NBGK-HGI), Isaszegi str. 200, 2100 Gödöllő, Hungary
| | - Roland Tóth
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
| | - Nikolett Tokodyné Szabadi
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
| | - Elen Gócza
- Department of Animal Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences; Agrobiotechnology and Precision Breeding for Food Security National Laboratory, Szent-Györgyi Albert str. 4, 2100 Gödöllő, Hungary
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Hawke DC, Watson AJ, Betts DH. Selecting Normalizers for MicroRNA RT-qPCR Expression Analysis in Murine Preimplantation Embryos and the Associated Conditioned Culture Media. J Dev Biol 2023; 11:jdb11020017. [PMID: 37092479 PMCID: PMC10123758 DOI: 10.3390/jdb11020017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/13/2023] [Accepted: 03/30/2023] [Indexed: 04/08/2023] Open
Abstract
Normalizing RT-qPCR miRNA datasets that encompass numerous preimplantation embryo stages requires the identification of miRNAs that may be used as stable reference genes. A need has also arisen for the normalization of the accompanying conditioned culture media as extracellular miRNAs may serve as biomarkers of embryo developmental competence. Here, we evaluate the stability of six commonly used miRNA normalization candidates, as well as small nuclear U6, using five different means of evaluation (BestKeeper, NormFinder, geNorm, the comparative Delta Ct method and RefFinder comprehensive analysis) to assess their stability throughout murine preimplantation embryo development from the oocyte to the late blastocyst stages, both in whole embryos and the associated conditioned culture media. In descending order of effectiveness, miR-16, miR-191 and miR-106 were identified as the most stable individual reference miRNAs for developing whole CD1 murine preimplantation embryos, while miR-16, miR-106 and miR-103 were ideal for the conditioned culture media. Notably, the widely used U6 reference was among the least appropriate for normalizing both whole embryo and conditioned media miRNA datasets. Incorporating multiple reference miRNAs into the normalization basis via a geometric mean was deemed beneficial, and combinations of each set of stable miRNAs are further recommended, pending validation on a per experiment basis.
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Affiliation(s)
- David C. Hawke
- Departments of Physiology and Pharmacology & Obstetrics and Gynaecology, Western University, London, ON N6A 3K7, Canada
- Children’s Health Research Institute—Lawson Health Research Institute, London, ON N6C 2R5, Canada
| | - Andrew J. Watson
- Departments of Physiology and Pharmacology & Obstetrics and Gynaecology, Western University, London, ON N6A 3K7, Canada
- Children’s Health Research Institute—Lawson Health Research Institute, London, ON N6C 2R5, Canada
| | - Dean H. Betts
- Departments of Physiology and Pharmacology & Obstetrics and Gynaecology, Western University, London, ON N6A 3K7, Canada
- Children’s Health Research Institute—Lawson Health Research Institute, London, ON N6C 2R5, Canada
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3
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Lázár B, Szabadi NT, Anand M, Tóth R, Ecker A, Urbán M, Aponte MTS, Stepanova G, Hegyi Z, Homolya L, Várkonyi EP, Pain B, Gócza E. Effect of miR-302b MicroRNA Inhibition on Chicken Primordial Germ Cell Proliferation and Apoptosis Rate. Genes (Basel) 2021; 13:genes13010082. [PMID: 35052421 PMCID: PMC8774308 DOI: 10.3390/genes13010082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/16/2021] [Accepted: 12/23/2021] [Indexed: 11/22/2022] Open
Abstract
The primordial germ cells (PGCs) are the precursors for both the oocytes and spermatogonia. Recently, a novel culture system was established for chicken PGCs, isolated from embryonic blood. The possibility of PGC long-term cultivation issues a new advance in germ cell preservation, biotechnology, and cell biology. We investigated the consequence of gga-miR-302b-5P (5P), gga-miR-302b-3P (3P) and dual inhibition (5P/3P) in two male and two female chicken PGC lines. In treated and control cell cultures, the cell number was calculated every four hours for three days by the XLS Imaging system. Comparing the cell number of control and treated lines on the first day, we found that male lines had a higher proliferation rate independently from the treatments. Compared to the untreated ones, the proliferation rate and the number of apoptotic cells were considerably reduced at gga-miR-302b-5P inhibition in all PGC lines on the third day of the cultivation. The control PGC lines showed a significantly higher proliferation rate than 3P inhibited lines on Day 3 in all PGC lines. Dual inhibition of gga-miR-302b mature miRNAs caused a slight reduction in proliferation rate, but the number of apoptotic cells increased dramatically. The information gathered by examining the factors affecting cell proliferation of PGCs can lead to new data in stem cell biology.
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Affiliation(s)
- Bence Lázár
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
- Institute for Farm Animal Gene Conservation, National Centre for Biodiversity and Gene Conservation, 2100 Godollo, Hungary;
| | - Nikolett Tokodyné Szabadi
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
| | - Mahek Anand
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
| | - Roland Tóth
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
| | - András Ecker
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
| | - Martin Urbán
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
| | - Maria Teresa Salinas Aponte
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
| | - Ganna Stepanova
- Faculty of Medicine, Institute of Translational Medicine, Semmelweis University, 1089 Budapest, Hungary;
| | - Zoltán Hegyi
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (Z.H.); (L.H.)
| | - László Homolya
- Institute of Enzymology, Research Centre for Natural Sciences, 1117 Budapest, Hungary; (Z.H.); (L.H.)
| | - Eszter Patakiné Várkonyi
- Institute for Farm Animal Gene Conservation, National Centre for Biodiversity and Gene Conservation, 2100 Godollo, Hungary;
| | - Bertrand Pain
- Stem-Cell and Brain Research Institute, USC1361 INRA, U1208 INSERM, 69675 Bron, France;
| | - Elen Gócza
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 2100 Godollo, Hungary; (B.L.); (N.T.S.); (M.A.); (R.T.); (A.E.); (M.U.); (M.T.S.A.)
- Correspondence:
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Hawke DC, Ahmed DB, Watson AJ, Betts DH. Murine Blastocysts Release Mature MicroRNAs Into Culture Media That Reflect Developmental Status. Front Genet 2021; 12:655882. [PMID: 34122510 PMCID: PMC8193861 DOI: 10.3389/fgene.2021.655882] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/12/2021] [Indexed: 01/01/2023] Open
Abstract
Extracellular microRNA (miRNA) sequences derived from the pre-implantation embryo have attracted interest for their possible contributions to the ongoing embryonic-uterine milieu, as well as their potential for use as accessible biomarkers indicative of embryonic health. Spent culture media microdroplets used to culture late-stage E4.0 murine blastocysts were screened for 641 mature miRNA sequences using a reverse transcription-quantitative polymerase chain reaction-based array. We report here 39 miRNAs exclusively detected in the conditioned media, including the implantation-relevant miR-126a-3p, miR-101a, miR-143, and miR-320, in addition to members of the highly expressed embryonic miR-125 and miR-290 families. Based on these results, an miRNA panel was assembled comprising five members of the miR-290 family (miR-291-295) and five conserved sequences with significance to the embryonic secretome (miR-20a, miR-30c, miR-142-3p, miR-191, and miR-320). Panel profiling of developing embryo cohort lysates and accompanying conditioned media microdroplets revealed extensive similarities in relative quantities of miRNAs and, as a biomarker proof of concept, enabled distinction between media conditioned with differently staged embryos (zygote, 4-cell, and blastocyst). When used to assess media conditioned with embryos of varying degrees of degeneration, the panel revealed increases in all extracellular panel sequences, suggesting cell death is an influential and identifiable factor detectable by this assessment. In situ hybridization of three panel sequences (miR-30c, miR-294, and miR-295) in late-stage blastocysts revealed primarily inner cell mass expression with a significant presence of miR-294 throughout the blastocyst cavity. Furthermore, extracellular miR-290 sequences responded significantly to high centrifugal force, suggesting a substantial fraction of these sequences may exist within a vesicle such as an exosome, microvesicle, or apoptotic bleb. Together, these results support the use of extracellular miRNA to assess embryonic health and enable development of a non-invasive viability diagnostic tool for clinical use.
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Affiliation(s)
- David Connor Hawke
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Department of Obstetrics and Gynecology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Children's Health Research Institute-LHRI, London, ON, Canada
| | - Danyal Baber Ahmed
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Department of Obstetrics and Gynecology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Children's Health Research Institute-LHRI, London, ON, Canada
| | - Andrew John Watson
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Department of Obstetrics and Gynecology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Children's Health Research Institute-LHRI, London, ON, Canada
| | - Dean Harvey Betts
- Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Department of Obstetrics and Gynecology, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada.,Children's Health Research Institute-LHRI, London, ON, Canada
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5
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Hawke DC, Watson AJ, Betts DH. Extracellular vesicles, microRNA and the preimplantation embryo: non-invasive clues of embryo well-being. Reprod Biomed Online 2020; 42:39-54. [PMID: 33303367 DOI: 10.1016/j.rbmo.2020.11.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/05/2020] [Accepted: 11/15/2020] [Indexed: 12/16/2022]
Abstract
Elective single embryo transfer is rapidly becoming the standard of care in assisted reproductive technology for patients under the age of 35 years with a good prognosis. Clinical pregnancy rates have become increasingly dependent on the selection of a single viable embryo for transfer, and diagnostic techniques facilitating this selection continue to develop. Current progress in elucidating the extracellular vesicle and microRNA components of the embryonic secretome is reviewed, and the potential for these findings to improve clinical embryo selection discussed. Key results have shown that extracellular vesicles and microRNAs are rapidly detectable constituents of the embryonic secretome. Evidence suggests that the vesicular population is largely exosomal in nature, secreted at all stages of preimplantation development and capable of traversing the zona pellucida. Both extracellular vesicle and microRNA concentrations within the secretome are elevated for blastocysts with diminished developmental competence, as indicated either by degeneracy or implantation failure, whereas studies have yet to firmly correlate individual microRNA sequences with pregnancy outcome. These emerging correlations support the viability of extracellular vesicles and microRNAs as the basis for a new diagnostic test to supplement or replace morphokinetic assessment.
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Affiliation(s)
- David Connor Hawke
- Department of Physiology and Pharmacology; Department of Obstetrics and Gynaecology, Schulich School of Medicine and Dentistry, Western University, London Ontario N6A 5C1, Canada; Children's Health Research Institute; Lawson Health Research Institute, London Ontario, Canada
| | - Andrew John Watson
- Department of Physiology and Pharmacology; Department of Obstetrics and Gynaecology, Schulich School of Medicine and Dentistry, Western University, London Ontario N6A 5C1, Canada; Children's Health Research Institute; Lawson Health Research Institute, London Ontario, Canada
| | - Dean Harvey Betts
- Department of Physiology and Pharmacology; Department of Obstetrics and Gynaecology, Schulich School of Medicine and Dentistry, Western University, London Ontario N6A 5C1, Canada; Children's Health Research Institute; Lawson Health Research Institute, London Ontario, Canada.
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6
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Haig D, Mainieri A. The Evolution of Imprinted microRNAs and Their RNA Targets. Genes (Basel) 2020; 11:genes11091038. [PMID: 32899179 PMCID: PMC7564603 DOI: 10.3390/genes11091038] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/26/2020] [Accepted: 09/01/2020] [Indexed: 12/19/2022] Open
Abstract
Mammalian genomes contain many imprinted microRNAs. When an imprinted miRNA targets an unimprinted mRNA their interaction may have different fitness consequences for the loci encoding the miRNA and mRNA. In one possible outcome, the mRNA sequence evolves to evade regulation by the miRNA by a simple change of target sequence. Such a response is unavailable if the targeted sequence is strongly constrained by other functions. In these cases, the mRNA evolves to accommodate regulation by the imprinted miRNA. These evolutionary dynamics are illustrated using the examples of the imprinted C19MC cluster of miRNAs in primates and C2MC cluster in mice that are paternally expressed in placentas. The 3′ UTR of PTEN, a gene with growth-related and metabolic functions, appears to be an important target of miRNAs from both clusters.
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7
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The effect of dual inhibition of Ras-MEK-ERK and GSK3β pathways on development of in vitro cultured rabbit embryos. ZYGOTE 2020; 28:183-190. [PMID: 32192548 DOI: 10.1017/s0967199419000753] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Dual inhibition (2i) of Ras-MEK-ERK and GSK3β pathways enables the derivation of embryo stem cells (ESCs) from refractory mouse strains and, for permissive strains, allows ESC derivation with no external protein factor stimuli involvement. In addition, blocking of ERK signalling in 8-cell-stage mouse embryos leads to ablation of GATA4/6 expression in hypoblasts, suggesting fibroblast growth factor (FGF) dependence of hypoblast formation in the mouse. In human, bovine or porcine embryos, the hypoblast remains unaffected or displays slight-to-moderate reduction in cell number. In this study, we demonstrated that segregation of the hypoblast and the epiblast in rabbit embryos is FGF independent and 2i treatment elicits only a limited reinforcement in favour of OCT4-positive epiblast populations against the GATA4-/6-positive hypoblast population. It has been previously shown that TGFβ/Activin A inhibition overcomes the pervasive differentiation and inhomogeneity of rat iPSCs, rat ESCs and human iPSCs while prompting them to acquire naïve properties. However, TGFβ/Activin A inhibition, alone or together with Rho-associated, coiled-coil containing protein kinase (ROCK) inhibition, was not compatible with the viability of rabbit embryos according to the ultrastructural analysis of preimplantation rabbit embryos by electron microscopy. In rabbit models ovulation upon mating allows the precise timing of progression of the pregnancy. It produces several embryos of the desired stage in one pregnancy and a relatively short gestation period, making the rabbit embryo a suitable model to discover the cellular functions and mechanisms of maintenance of pluripotency in embryonic cells and the embryo-derived stem cells of other mammals.
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8
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Pendzialek SM, Knelangen JM, Schindler M, Gürke J, Grybel KJ, Gocza E, Fischer B, Navarrete Santos A. Trophoblastic microRNAs are downregulated in a diabetic pregnancy through an inhibition of Drosha. Mol Cell Endocrinol 2019; 480:167-179. [PMID: 30447248 DOI: 10.1016/j.mce.2018.11.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/11/2018] [Accepted: 11/11/2018] [Indexed: 12/21/2022]
Abstract
MicroRNAs are promising biological markers for prenatal diagnosis. They regulate placental development and are present in maternal plasma. Maternal metabolic diseases are major risk factors for placental deterioration. We analysed the influence of a maternal insulin-dependent diabetes mellitus on microRNA expression in maternal plasma and in blastocysts employing an in vivo rabbit diabetic pregnancy model and an in vitro embryo culture in hyperglycaemic and hypoinsulinaemic medium. Maternal diabetes led to a marked downregulation of Dicer protein in embryoblast cells and Drosha protein in trophoblast cells. MiR-27b, miR-141 and miR-191 were decreased in trophoblast cells and in maternal plasma of diabetic rabbits. In vitro studies indicate, that maternal hyperglycaemia and hypoinsulinaemia partially contribute to the downregulation of trophoblastic microRNAs. As the altered microRNA expression was detectable in maternal plasma, too, the plasma microRNA signature could serve as an early biological marker for the prediction of trophoblast function during a diabetic pregnancy.
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Affiliation(s)
- S Mareike Pendzialek
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany.
| | - Julia M Knelangen
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany
| | - Maria Schindler
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany
| | - Jacqueline Gürke
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany
| | - Katarzyna J Grybel
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany
| | - Elen Gocza
- Agricultural Biotechnology Institute (ABC), National Agricultural Research and Innovation Centre (NARIC), Szent-Györgyi Albert u. 4, 2100, Gödöllő, Hungary
| | - Bernd Fischer
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany
| | - Anne Navarrete Santos
- Department of Anatomy and Cell Biology, Martin Luther University Faculty of Medicine, Grosse Steinstrasse 52, 06097, Halle (Saale), Germany
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Cruz L, Romero JAA, Iglesia RP, Lopes MH. Extracellular Vesicles: Decoding a New Language for Cellular Communication in Early Embryonic Development. Front Cell Dev Biol 2018; 6:94. [PMID: 30211159 PMCID: PMC6121069 DOI: 10.3389/fcell.2018.00094] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/30/2018] [Indexed: 01/08/2023] Open
Abstract
The blastocyst inner cell mass (ICM) that gives rise to a whole embryo in vivo can be derived and cultured in vitro as embryonic stem cells (ESCs), which retain full developmental potential. ICM cells receive, from diverse sources, complex molecular and spatiotemporal signals that orchestrate the finely-tuned processes associated with embryogenesis. Those instructions come, continuously, from themselves and from surrounding cells, such as those present in the trophectoderm and primitive endoderm (PrE). A key component of the ICM niche are the extracellular vesicles (EVs), produced by distinct cell types, that carry and transfer key molecules that regulate target cells and modulate cell renewal or cell fate. A growing number of studies have demonstrated the extracellular circulation of morphogens, a group of classical regulators of embryo development, are carried by EVs. miRNAs are also an important cargo of the EVs that have been implicated in tissue morphogenesis and have gained special attention due to their ability to regulate protein expression through post-transcriptional modulation, thereby influencing cell phenotype. This review explores the emerging evidence supporting the role of EVs as an additional mode of intercellular communication in early embryonic and ESCs differentiation.
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Affiliation(s)
- Lilian Cruz
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Jenny A A Romero
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Rebeca P Iglesia
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Marilene H Lopes
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Xiao W, Hu Y, Tong Y, Cai M, He H, Liu B, Shi Y, Wang J, Qin Y, Lai S. Landscape of long non-coding RNAs in Trichophyton mentagrophytes-induced rabbit dermatophytosis lesional skin and normal skin. Funct Integr Genomics 2018; 18:401-410. [PMID: 29560532 DOI: 10.1007/s10142-018-0601-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 02/12/2018] [Accepted: 03/09/2018] [Indexed: 11/30/2022]
Abstract
Emerging evidences suggest that long non-coding RNAs (lncRNAs) play important role in disease development. However, the role of rabbit lncRNAs in the pathogenesis of dermatophytosis remains elusive. The present study aimed to study and characterize lncRNA transcriptome in 8 T. mentagrophytes-induced female rabbit dermatophytosis lesional (TM) and 4 normal saline-infected (NS) skin biopsies using RNAseq. We identified 5883 lncRNAs in 12 strand-specific RNA-seq libraries and found 64 differentially expressed lncRNAs (q < 0.05) in TM relative to NS. As in other mammalian counterparts, rabbit lncRNAs were distributed in all chromosomes except the Y chromosome and were generally smaller in size and fewer in exon numbers compared to protein coding genes. Next, co-expression analysis revealed that 107 pairs between 32 DE lncRNAs and 96 protein coding genes showed a highly correlated expression (|r| > 0.8). Moreover, miRPara analysis of the lncRNAs revealed 173 lncRNAs with precursor sequences for 9561 probable novel miRNAs. Finally, q-PCR results validated the RNA-seq results with eight randomly selected lncRNAs. To the best of our knowledge, this is the first report on rabbit lncRNAs, and our results highlighted the potential role of lncRNAs in the pathogenesis of dermatophytosis.
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Affiliation(s)
- Wudian Xiao
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yongsong Hu
- Chengdu Agricultural College, Chengdu, 611130, China
| | - Yan Tong
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Mingcheng Cai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
| | - Hongbing He
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
| | - Buwei Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yu Shi
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jie Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yinghe Qin
- College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
| | - Songjia Lai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China.
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11
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Guo S, Yang Y, Yang Z, You H, Shi Y, Hu Z, Meng Z, Xiao J. Improving myocardial fractional flow reserve in coronary atherosclerosis via CX37 gene silence: a preclinical validation study in pigs. Interact Cardiovasc Thorac Surg 2018; 26:139-145. [PMID: 29049831 DOI: 10.1093/icvts/ivx218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 05/30/2017] [Indexed: 12/16/2023] Open
Abstract
OBJECTIVES The purpose of this study was to evaluate the effect of CX37 gene silence on myocardial fractional flow reserve (FFR). METHODS A total of 90 male pigs were randomly divided into saline, mock and 3 different doses (5, 10 and 20 µl) of CX37 viral suspension groups that could induce coronary plaque formation with high-fat diet. After performing myocardial FFR by intravascular ultrasound, different doses of CX37 viral suspension, saline and mock small interfering RNA (siRNA) were transfected into the related coronary. The FFR, the myocardial enzymes and the cardiac structures and functions of the pigs were detected at baseline, 4th, 8th and 12th week after transfection, respectively. RESULTS Repeated measures analysis of variance comparison showed that the difference in the FFR among the 5 groups was statistically significant (F = 27.0, P < 0.01). Post hoc analysis showed that FFR were highest in the siRNA CX37 group (20 µl), followed by the siRNA CX37 group (10 µl) and the siRNA CX37 group (5 µl), and lowest in the mock and saline groups. Left ventricular end-diastolic diameter was significantly smaller and ejection fraction was obviously higher in the 3 siRNA CX37 groups compared with the untreated groups. CONCLUSIONS Our study showed that FFR levels increased along with decreased doses of siRNA CX37 lentivirus, indicating that siRNA CX37 lentivirus may reduce the risk of coronary atherosclerosis and provide a potential approach to treat coronary heart disease.
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Affiliation(s)
- Suxia Guo
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Ying Yang
- Department of Cardiology, Affiliated People's Hospital of Nanjing Medical University in Wuxi and People's Hospital of Wuxi City, Wuxi, Jiangsu, China
| | - Zhenyu Yang
- Department of Cardiology, Affiliated People's Hospital of Nanjing Medical University in Wuxi and People's Hospital of Wuxi City, Wuxi, Jiangsu, China
| | - Huayan You
- Department of Cardiology, Affiliated People's Hospital of Nanjing Medical University in Wuxi and People's Hospital of Wuxi City, Wuxi, Jiangsu, China
| | - Yunke Shi
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhao Hu
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhaohui Meng
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jianming Xiao
- Department of Cardiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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Tapponnier Y, Afanassieff M, Aksoy I, Aubry M, Moulin A, Medjani L, Bouchereau W, Mayère C, Osteil P, Nurse-Francis J, Oikonomakos I, Joly T, Jouneau L, Archilla C, Schmaltz-Panneau B, Peynot N, Barasc H, Pinton A, Lecardonnel J, Gocza E, Beaujean N, Duranthon V, Savatier P. Reprogramming of rabbit induced pluripotent stem cells toward epiblast and chimeric competency using Krüppel-like factors. Stem Cell Res 2017; 24:106-117. [PMID: 28889080 DOI: 10.1016/j.scr.2017.09.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/24/2017] [Accepted: 09/01/2017] [Indexed: 12/22/2022] Open
Abstract
Rabbit induced pluripotent stem cells (rbiPSCs) possess the characteristic features of primed pluripotency as defined in rodents and primates. In the present study, we reprogrammed rbiPSCs using human Krüppel-like factors (KLFs) 2 and 4 and cultured them in a medium supplemented with fetal calf serum and leukemia inhibitory factor. These cells (designated rbEKA) were propagated by enzymatic dissociation for at least 30 passages, during which they maintained a normal karyotype. This new culturing protocol resulted in transcriptional and epigenetic reconfiguration, as substantiated by the expression of transcription factors and the presence of histone modifications associated with naïve pluripotency. Furthermore, microarray analysis of rbiPSCs, rbEKA cells, rabbit ICM cells, and rabbit epiblast showed that the global gene expression profile of the reprogrammed rbiPSCs was more similar to that of rabbit ICM and epiblast cells. Injection of rbEKA cells into 8-cell stage rabbit embryos resulted in extensive colonization of ICM in 9% early-blastocysts (E3.5), epiblast in 10% mid-blastocysts (E4.5), and embryonic disk in 1.4% pre-gastrulae (E6). Thus, these results indicate that KLF2 and KLF4 triggered the conversion of rbiPSCs into epiblast-like, embryo colonization-competent PSCs. Our results highlight some of the requirements to achieve bona fide chimeric competency.
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Affiliation(s)
- Yann Tapponnier
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Marielle Afanassieff
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France.
| | - Irène Aksoy
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Maxime Aubry
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Anaïs Moulin
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Lucas Medjani
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Wilhelm Bouchereau
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Chloé Mayère
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Pierre Osteil
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Jazmine Nurse-Francis
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Ioannis Oikonomakos
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | - Thierry Joly
- ISARA-Lyon, F-69007 Lyon, France; VetAgroSup, UPSP ICE, F-69280 Marcy l'Etoile, France
| | - Luc Jouneau
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | - Catherine Archilla
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | | | - Nathalie Peynot
- UMR BDR, INRA, ENVA, Université Paris Saclay, 78350 Jouy-en-Josas, France
| | - Harmonie Barasc
- INRA, UMR 444, Génétique Cellulaire, F-31076 Toulouse, France; ENVT, F-31076 Toulouse, France
| | - Alain Pinton
- INRA, UMR 444, Génétique Cellulaire, F-31076 Toulouse, France; ENVT, F-31076 Toulouse, France
| | - Jérome Lecardonnel
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Elen Gocza
- Agricultural Biotechnology Institute, H-2100 Gödöllo, Hungary
| | - Nathalie Beaujean
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France
| | | | - Pierre Savatier
- Univ Lyon, Université Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, INRA USC 1361, 69500 Bron, France.
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Noli L, Capalbo A, Dajani Y, Cimadomo D, Bvumbe J, Rienzi L, Ubaldi FM, Ogilvie C, Khalaf Y, Ilic D. Human Embryos Created by Embryo Splitting Secrete Significantly Lower Levels of miRNA-30c. Stem Cells Dev 2016; 25:1853-1862. [PMID: 27612589 DOI: 10.1089/scd.2016.0212] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Studies reporting term pregnancy and the production of genetically identical offspring from isolated blastomeres of early stage embryos have been carried out in small and large animals. However, very little is known about the effects of embryo splitting on the development and reproductive competency of human embryos. In this study, we investigated the effects of embryo splitting on profile of microRNAs (miRNAs) detected in their spent blastocyst medium (SBM) by comparative analysis of miRNA profiles in SBM of human twin embryos created by blastomere biopsy and SBM of blastocysts that resulted in a healthy pregnancy and live birth following embryo transfer. The profile of miRNA secretion in in vitro culture media consistently distinguishes twin from control embryos. We found that six miRNAs are significantly more abundant in SBM from twin embryos, while nine are significantly more abundant in SBM from euploid implanted blastocysts. These nine include miRNA-30c, a previously reported marker of blastocyst implantation potential. Furthermore, 22.9% of miRNAs secreted by twin embryos were never detected in SBM from normal reproductively competent blastocysts, or from trophectoderm (TE) samples from normal blastocysts donated for the research. The miRNA profile, unique to twin blastocysts, might be a result of differential lineage commitment in these embryos.
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Affiliation(s)
- Laila Noli
- 1 Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London and Assisted Conception Unit, Guys' Hospital , London, United Kingdom
| | - Antonio Capalbo
- 2 GENERA, Centre for Reproductive Medicine , Clinica Valle Giulia, Rome, Italy .,3 GENETYX, Molecular Genetics Laboratory , Vicenza, Italy
| | - Yaser Dajani
- 1 Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London and Assisted Conception Unit, Guys' Hospital , London, United Kingdom
| | - Danilo Cimadomo
- 2 GENERA, Centre for Reproductive Medicine , Clinica Valle Giulia, Rome, Italy .,3 GENETYX, Molecular Genetics Laboratory , Vicenza, Italy
| | - Jean Bvumbe
- 1 Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London and Assisted Conception Unit, Guys' Hospital , London, United Kingdom
| | - Laura Rienzi
- 2 GENERA, Centre for Reproductive Medicine , Clinica Valle Giulia, Rome, Italy .,3 GENETYX, Molecular Genetics Laboratory , Vicenza, Italy
| | - Filippo Maria Ubaldi
- 2 GENERA, Centre for Reproductive Medicine , Clinica Valle Giulia, Rome, Italy .,3 GENETYX, Molecular Genetics Laboratory , Vicenza, Italy
| | - Caroline Ogilvie
- 4 Genetics Laboratories, Guy's Hospital , London, United Kingdom
| | - Yacoub Khalaf
- 1 Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London and Assisted Conception Unit, Guys' Hospital , London, United Kingdom
| | - Dusko Ilic
- 1 Division of Women's Health, Faculty of Life Sciences and Medicine, King's College London and Assisted Conception Unit, Guys' Hospital , London, United Kingdom
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15
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Osteil P, Moulin A, Santamaria C, Joly T, Jouneau L, Aubry M, Tapponnier Y, Archilla C, Schmaltz-Panneau B, Lecardonnel J, Barasc H, Mouney-Bonnet N, Genthon C, Roulet A, Donnadieu C, Acloque H, Gocza E, Duranthon V, Afanassieff M, Savatier P. A Panel of Embryonic Stem Cell Lines Reveals the Variety and Dynamic of Pluripotent States in Rabbits. Stem Cell Reports 2016; 7:383-398. [PMID: 27594588 PMCID: PMC5032405 DOI: 10.1016/j.stemcr.2016.07.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 07/27/2016] [Accepted: 07/28/2016] [Indexed: 01/11/2023] Open
Abstract
Conventional rabbit embryonic stem cell (ESC) lines are derived from the inner cell mass (ICM) of pre-implantation embryos using methods and culture conditions that are established for primate ESCs. In this study, we explored the capacity of the rabbit ICM to give rise to ESC lines using conditions similar to those utilized to generate naive ESCs in mice. On single-cell dissociation and culture in fibroblast growth factor 2 (FGF2)-free, serum-supplemented medium, rabbit ICMs gave rise to ESC lines lacking the DNA-damage checkpoint in the G1 phase like mouse ESCs, and with a pluripotency gene expression profile closer to the rabbit ICM/epiblast profiles. These cell lines can be converted to FGF2-dependent ESCs after culture in conventional conditions. They can also colonize the rabbit pre-implantation embryo. These results indicate that rabbit epiblast cells can be coaxed toward different types of pluripotent stem cells and reveal the dynamics of pluripotent states in rabbit ESCs.
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Affiliation(s)
- Pierre Osteil
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France; INRA, USC1361, 69500 Bron, France; Embryology Unit, Children's Medical Research Institute, CMRI, Westmead, NSW 2145, Australia
| | - Anaïs Moulin
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Claire Santamaria
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Thierry Joly
- ISARA-Lyon, 69007 Lyon, France; VetAgroSup, UPSP ICE, 69280 Marcy l'Etoile, France
| | - Luc Jouneau
- UMR BDR, INRA, ENVA, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Maxime Aubry
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Yann Tapponnier
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France
| | - Catherine Archilla
- UMR BDR, INRA, ENVA, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | | | - Jérôme Lecardonnel
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - Harmonie Barasc
- INRA, UMR 444, Génétique Cellulaire, 31076 Toulouse, France; ENVT, 31076 Toulouse, France
| | - Nathalie Mouney-Bonnet
- INRA, UMR 444, Génétique Cellulaire, 31076 Toulouse, France; ENVT, 31076 Toulouse, France
| | - Clémence Genthon
- INRA, UMR1388 Génétique, Physiologie et Systèmes d'Elevage, 31326 Castanet Tolosan, France
| | - Alain Roulet
- INRA, UMR1388 Génétique, Physiologie et Systèmes d'Elevage, 31326 Castanet Tolosan, France
| | - Cécile Donnadieu
- INRA, UMR1388 Génétique, Physiologie et Systèmes d'Elevage, 31326 Castanet Tolosan, France
| | - Hervé Acloque
- INRA, UMR1388 Génétique, Physiologie et Systèmes d'Elevage, 31326 Castanet Tolosan, France
| | - Elen Gocza
- NARIC, Agricultural Biotechnology Institute, 2100 Gödöllo, Hungary
| | | | - Marielle Afanassieff
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France; INRA, USC1361, 69500 Bron, France.
| | - Pierre Savatier
- Univ Lyon, Université Lyon 1, INSERM, Stem Cell and Brain Research Institute U1208, 69500 Bron, France.
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Guo S, Zhu J, Yang Z, Feng J, Li K, Wang R, Yang X. Reduction of connexin 37 expression by RNA interference decreases atherosclerotic plaque formation. Mol Med Rep 2015; 11:2664-70. [PMID: 25483389 DOI: 10.3892/mmr.2014.3053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 06/05/2014] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to examine the effects of connexin 37 (Cx37) interference on atherosclerotic plaques. Lentiviruses expressing small interfering RNA (siRNA) of Cx37 were constructed, and were shown to significantly knockdown the mRNA and protein expression of Cx37 in vitro. Sixty pigs on a high‑fat diet were randomly divided into three treatment groups of saline, mock or Cx37 siRNA, to induce plaque formation. The Cx37 lentiviral suspension was transfected into the abdominal aortic plaques of pigs. Plaque characteristics were detected by intravascular ultrasound and the expression of Cx37 mRNA was detected by semi‑quantitative polymerase chain reaction. The expression of Cx37 protein was analyzed by western blot analysis. Two months after lentivirus transfection, Cx37 mRNA levels were decreased by 38% in the Cx37 siRNA group, by 60% in the mock‑siRNA group and by 63% in the saline group (P<0.05). The mock group showed no significant changes in Cx37 expression as compared with the saline group. Cx37 protein expression was lower in the Cx37 siRNA‑treated group as compared with the other groups (0.21±0.07 vs. 0.65±0.06 vs. 0.54±0.07). The percentage of plaque necrosis at 10 months (two months following RNAi) was decreased in the Cx37 siRNA group as compared with that at eight months, prior to RNAi (5.26±2.11 vs. 7.83±1.03%, P<0.05). In the mock‑siRNA and saline groups, no differences (P=0.074, 0.061, respectively) were observed. In the Cx37 siRNA group, plaque volumes following 10 months decreased relative to those following eight months, prior to RNAi (21.03±6.24 vs. 31.23±10.23, P<0.01). By contrast, in the mock siRNA and saline groups, plaque volumes after 10 months were increased relative to those following eight months (38.54±13.56 vs. 32.12±11.21 mm3, 37.36±14.21 vs. 30.21±12.02 mm3, P=0.031, P=0.027). Atherosclerotic plaque formation was effectively decreased through the downregulation of Cx37 mRNA using Cx37 siRNA.
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Affiliation(s)
- Suxia Guo
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Jihong Zhu
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| | - Zhenyu Yang
- Department of Cardiology, The Affiliated Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi, Jiangsu 214023, P.R. China
| | - Jian Feng
- Department of Cardiology, The Affiliated Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi, Jiangsu 214023, P.R. China
| | - Kulin Li
- Department of Cardiology, The Affiliated Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi, Jiangsu 214023, P.R. China
| | - Ruxing Wang
- Department of Cardiology, The Affiliated Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi, Jiangsu 214023, P.R. China
| | - Xiangjun Yang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
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Zhao D, Jia P, Wang W, Zhang G. VEGF-mediated suppression of cell proliferation and invasion by miR-410 in osteosarcoma. Mol Cell Biochem 2014; 400:87-95. [PMID: 25385479 DOI: 10.1007/s11010-014-2265-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 10/29/2014] [Indexed: 12/12/2022]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that post-transcriptionally regulate gene expression. The aberrant expression of miRNA has become a major focus in cancer research. This study aimed to investigate the importance of miR-410 in the diagnosis and therapy of osteosarcoma (OS). Western blot analysis showed that the expression of VEGF was higher in Saos-2 and MG-63 cells than that in three other OS cell lines. We also found that miR-410 was lowly expressed and inversely correlated with VEGF expression in OS specimens. Over-expression of miR-410 had a greater repression on VEGF expression than other candidate VEGF-targeting miRNAs. Luciferase reporter assay demonstrated that miR-410 directly decreased VEGF expression by targeting its 3'-untranslated region. Further investigation demonstrated the regulation of miR-410 in OS cells via VEGF. In vitro MTT assay, Transwell, and flow cytometry showed that transfection of the miR-410 expression plasmid inhibited cell proliferation and contributed to apoptosis in OS cells. Moreover, restoration of VEGF reversed the effect of miR-410 on OS cells, and upregulated the expression of phosphorylated AKT. Finally, overexpression of miR-410 also showed a negative effect on tumor growth in vivo. Our findings suggest a cooperative relationship between miR-410 and VEGF in OS cell regulation. This information may help researchers to better understand miRNA regulation in cancer and provide a rationale for developing miRNA-based strategies for OS treatment.
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Affiliation(s)
- Dong Zhao
- Department of Orthopedics, Affiliated Hospital, Logistics University of Chinese People's Armed Police Forces, No. 220 Chenglin Road, Hedong district, Tianjin, 300162, China,
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