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Llobat L. Pluripotency and Growth Factors in Early Embryonic Development of Mammals: A Comparative Approach. Vet Sci 2021; 8:vetsci8050078. [PMID: 34064445 PMCID: PMC8147802 DOI: 10.3390/vetsci8050078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 12/24/2022] Open
Abstract
The regulation of early events in mammalian embryonic development is a complex process. In the early stages, pluripotency, cellular differentiation, and growth should occur at specific times and these events are regulated by different genes that are expressed at specific times and locations. The genes related to pluripotency and cellular differentiation, and growth factors that determine successful embryonic development are different (or differentially expressed) among mammalian species. Some genes are fundamental for controlling pluripotency in some species but less fundamental in others, for example, Oct4 is particularly relevant in bovine early embryonic development, whereas Oct4 inhibition does not affect ovine early embryonic development. In addition, some mechanisms that regulate cellular differentiation do not seem to be clear or evolutionarily conserved. After cellular differentiation, growth factors are relevant in early development, and their effects also differ among species, for example, insulin-like growth factor improves the blastocyst development rate in some species but does not have the same effect in mice. Some growth factors influence genes related to pluripotency, and therefore, their role in early embryo development is not limited to cell growth but could also involve the earliest stages of development. In this review, we summarize the differences among mammalian species regarding the regulation of pluripotency, cellular differentiation, and growth factors in the early stages of embryonic development.
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Affiliation(s)
- Lola Llobat
- Research Group Microbiological Agents Associated with Animal Reproduction (PROVAGINBIO), Department of Animal Production and Health, Veterinary Public Health and Food Science and Technology (PASAPTA) Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, 46113 Valencia, Spain
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Morales-Prieto DM, Barth E, Murrieta-Coxca JM, Favaro RR, Gutiérrez-Samudio RN, Chaiwangyen W, Ospina-Prieto S, Gruhn B, Schleußner E, Marz M, Markert UR. Identification of miRNAs and associated pathways regulated by Leukemia Inhibitory Factor in trophoblastic cell lines. Placenta 2019; 88:20-27. [PMID: 31586768 DOI: 10.1016/j.placenta.2019.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 08/06/2019] [Accepted: 09/10/2019] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Leukemia Inhibitory Factor (LIF) regulates behavior of trophoblast cells and their interaction with immune and endothelial cells. In vitro, trophoblast cell response to LIF may vary depending on the cell model. Reported differences in the miRNA profile of trophoblastic cells may be responsible for these observations. Therefore, miRNA expression was investigated in four trophoblastic cell lines under LIF stimulation followed by in silico analysis of altered miRNAs and their associated pathways. METHODS Low density TaqMan miRNA assays were used to quantify levels of 762 mature miRNAs under LIF stimulation in three choriocarcinoma-derived (JEG-3, ACH-3P and AC1-M59) and a trophoblast immortalized (HTR-8/SVneo) cell lines. Expression of selected miRNAs was confirmed in primary trophoblast cells and cell lines by qPCR. Targets and associated pathways of the differentially expressed miRNAs were inferred from the miRTarBase followed by a KEGG Pathway Enrichment Analysis. HTR-8/SVneo and JEG-3 cells were transfected with miR-21-mimics and expression of miR-21 targets was assessed by qPCR. RESULTS A similar number of miRNAs changed in each tested cell line upon LIF stimulation, however, low coincidence of individual miRNA species was observed and occurred more often among choriocarcinoma-derived cells (complete data set at http://www.ncbi.nlm.nih.gov/geo/ under GEO accession number GSE130489). Altered miRNAs were categorized into pathways involved in human diseases, cellular processes and signal transduction. Six cascades were identified as significantly enriched, including JAK/STAT and TGFB-SMAD. Upregulation of miR-21-3p was validated in all cell lines and primary cells and STAT3 was confirmed as its target. DISCUSSION Dissimilar miRNA responses may be involved in differences of LIF effects on trophoblastic cell lines.
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Affiliation(s)
| | - Emanuel Barth
- Friedrich-Schiller-University Jena, Faculty of Mathematics and Computer Science, RNA Bioinformatics and High Throughput Analysis, Germany; Leibniz Institute for Age Research, Fritz Lipman Institute (FLI), Beutenbergstrasse 11, 07745, Jena, Germany
| | - Jose Martín Murrieta-Coxca
- Placenta-Labor, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany; Departamento de Inmunología, Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Mexico City, Mexico
| | - Rodolfo R Favaro
- Placenta-Labor, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
| | | | - Wittaya Chaiwangyen
- Placenta-Labor, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
| | | | - Bernd Gruhn
- Children's Hospital, Friedrich-Schiller University Jena, Kochstraße 2, 07745, Jena, Germany
| | - Ekkehard Schleußner
- Placenta-Labor, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany
| | - Manja Marz
- Friedrich-Schiller-University Jena, Faculty of Mathematics and Computer Science, RNA Bioinformatics and High Throughput Analysis, Germany; Leibniz Institute for Age Research, Fritz Lipman Institute (FLI), Beutenbergstrasse 11, 07745, Jena, Germany; European Virus Bioinformatics Center, Leutragraben 1, 07743, Jena, Germany
| | - Udo R Markert
- Placenta-Labor, Jena University Hospital, Am Klinikum 1, 07747, Jena, Germany.
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