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Alves TC, Queiroz FR, de Melo Neto AB, da Rocha Fernandes G, Pais FSM, de Jesus Jeremias W, Babá EH, de Moraes Mourão M, Morais ER, Cabral FJ, do Amaral LR, Caldeira RL, Zech Coelho PM, de Souza Gomes M. Identification and characterization of microRNAs in Biomphalaria tenagophila and comparative analysis of their expression in Schistosoma mansoni-resistant and -susceptible snail populations. Gene 2023; 884:147742. [PMID: 37634882 DOI: 10.1016/j.gene.2023.147742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Schistosomiasis is a neglected tropical disease caused by Schistosoma and affects over 240 million people worldwide. One of the most prominent causative agents is Schistosoma mansoni, which develops inside the intermediate host. Biomphalaria tenagophila is the second most important vector of schistosomiasis in Brazil and the Taim population is completely resistant to infection by S. mansoni. OBJECTIVE This study aims to identify and characterize B. tenagophila microRNAs (miRNAs) and evaluate their differential expression in S. mansoni-susceptible and -resistant populations of B. tenagophila. METHODS Two populations of B. tenagophila snails, susceptible and resistant to S. mansoni infection, were used to investigate the small RNA response of these snails after being infected with the parasite. Small RNA sequencing and quantitative real-time PCR were employed to identify and validate differentially expressed miRNAs. Bioinformatics analysis were performed to identify miRNA precursors and mature and evaluate their differential expression. FINDINGS The study predicted 173 mature miRNAs and 123 precursors. Among them were six Lophotrochozoa-specific miRNAs, three mollusk-specific miRNAs, and six pre-miRNAs in a cluster. The small RNA sequencing and RT-PCR of B. tenagophila samples allowed assessing the expression patterns of miRNAs. MAIN CONCLUSIONS The results obtained may support future studies in Biomphalaria spp., generating a global impact on disease control.
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Affiliation(s)
- Tamires Caixeta Alves
- Bioinformatics and Molecular Analysis Laboratory, Federal University of Uberlândia, Patos de Minas, MG, Brazil
| | - Fábio Ribeiro Queiroz
- René Rachou Institute, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | - Angelo Borges de Melo Neto
- Bioinformatics and Molecular Analysis Laboratory, Federal University of Uberlândia, Patos de Minas, MG, Brazil
| | | | | | | | - Elio Hideo Babá
- René Rachou Institute, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | | | - Enyara Rezende Morais
- Bioinformatics and Molecular Analysis Laboratory, Federal University of Uberlândia, Patos de Minas, MG, Brazil
| | | | | | - Roberta Lima Caldeira
- René Rachou Institute, Oswaldo Cruz Foundation, Belo Horizonte, Minas Gerais, Brazil
| | | | - Matheus de Souza Gomes
- Bioinformatics and Molecular Analysis Laboratory, Federal University of Uberlândia, Patos de Minas, MG, Brazil.
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Paces J, Nic M, Novotny T, Svoboda P. Literature review of baseline information to support the risk assessment of RNAi‐based GM plants. ACTA ACUST UNITED AC 2017. [PMCID: PMC7163844 DOI: 10.2903/sp.efsa.2017.en-1246] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jan Paces
- Institute of Molecular Genetics of the Academy of Sciences of the Czech Republic (IMG)
| | | | | | - Petr Svoboda
- Institute of Molecular Genetics of the Academy of Sciences of the Czech Republic (IMG)
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Lens Biology is a Dimension of Neurobiology. Neurochem Res 2017; 42:933-942. [DOI: 10.1007/s11064-016-2156-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 12/12/2016] [Accepted: 12/19/2016] [Indexed: 01/02/2023]
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4
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Wu Y, Zhong A, Zheng H, Jiang M, Xia Z, Yu J, Chen L, Huang X. Expression of Flotilin-2 and Acrosome Biogenesis Are Regulated by MiR-124 during Spermatogenesis. PLoS One 2015; 10:e0136671. [PMID: 26313572 PMCID: PMC4551675 DOI: 10.1371/journal.pone.0136671] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/06/2015] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRNAs) are a class of short non-coding RNA molecules, which diversely regulate gene expression in organisms. Although the regulatory role of these small RNA molecules has been recently explored in animal spermatogenesis, the role of miR-124 in male germ cells is poorly defined. In our previous study, flotillin-2 was investigated as a novel Golgi-related protein involved in sperm acrosome biogenesis. The current study was designed to analyze the contribution of miR-124 in the regulation of flotillin-2 expression during mouse acrosome biogenesis. Luciferase assays revealed the target effects of miR-124 on flotillin-2 expression. Following intratesticular injection of miR-124 in 3-week-old male mice, quantitative real-time RT-PCR and western blot analysis were employed to confirm the function of miR-124 in regulating flotillin-2 after 48 hours. Sperm abnormalities were assessed 3 weeks later by ordinary optical microscopy, the acrosome abnormalities were also assessed by PNA staining and transmission electron microscopy. The results showed the proportion of sperm acrosome abnormalities was significantly higher than that of the control group. The expression of flotillin-2 and caveolin-1 was significantly downregulated during acrosome biogenesis. These results indicated that miR-124 could potentially play a role in caveolin-independent vesicle trafficking and modulation of flotillin-2 expression in mouse acrosome biogenesis.
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Affiliation(s)
- Yibo Wu
- Department of Reproductive Medicine, Affiliated hospital of Jiangnan University, Wuxi, Jiangsu Province, China
| | - Ahong Zhong
- Department of Obstetrics and Gynecology, The Fourth Affiliated Hospital of Soochow University, Wuxi, Jiangsu Province, China
| | - Haoyu Zheng
- State Key laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Min Jiang
- State Key laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Zhengrong Xia
- State Key laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Jinjin Yu
- Department of Obstetrics and Gynecology, The Fourth Affiliated Hospital of Soochow University, Wuxi, Jiangsu Province, China
| | - Ling Chen
- Department of Reproductive Medicine, Affiliated hospital of Jiangnan University, Wuxi, Jiangsu Province, China
- * E-mail: (XH); (LC)
| | - Xiaoyan Huang
- State Key laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu Province, China
- * E-mail: (XH); (LC)
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Yoshida MA, Ogura A, Ikeo K, Shigeno S, Moritaki T, Winters GC, Kohn AB, Moroz LL. Molecular Evidence for Convergence and Parallelism in Evolution of Complex Brains of Cephalopod Molluscs: Insights from Visual Systems. Integr Comp Biol 2015; 55:1070-83. [PMID: 26002349 DOI: 10.1093/icb/icv049] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Coleoid cephalopods show remarkable evolutionary convergence with vertebrates in their neural organization, including (1) eyes and visual system with optic lobes, (2) specialized parts of the brain controlling learning and memory, such as vertical lobes, and (3) unique vasculature supporting such complexity of the central nervous system. We performed deep sequencing of eye transcriptomes of pygmy squids (Idiosepius paradoxus) and chambered nautiluses (Nautilus pompilius) to decipher the molecular basis of convergent evolution in cephalopods. RNA-seq was complemented by in situ hybridization to localize the expression of selected genes. We found three types of genomic innovations in the evolution of complex brains: (1) recruitment of novel genes into morphogenetic pathways, (2) recombination of various coding and regulatory regions of different genes, often called "evolutionary tinkering" or "co-option", and (3) duplication and divergence of genes. Massive recruitment of novel genes occurred in the evolution of the "camera" eye from nautilus' "pinhole" eye. We also showed that the type-2 co-option of transcription factors played important roles in the evolution of the lens and visual neurons. In summary, the cephalopod convergent morphological evolution of the camera eyes was driven by a mosaic of all types of gene recruitments. In addition, our analysis revealed unexpected variations of squids' opsins, retinochromes, and arrestins, providing more detailed information, valuable for further research on intra-ocular and extra-ocular photoreception of the cephalopods.
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Affiliation(s)
- M A Yoshida
- *Research Fellow of the Japan Society for the Promotion of Science; Center for Information Biology, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan; Center for Information Biology, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan
| | - A Ogura
- Department of Computer Bioscience, Nagahama Institute of Bio-science and Technology, 1266 Tamura, Nagahama, Shiga 526-0829 Japan
| | - K Ikeo
- Center for Information Biology, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka 411-8540, Japan
| | - S Shigeno
- Department for Marine Biodiversity Research, Japan Agency for Marine-Earth Science and Technology, 2-15, Natsushima, Yokosuka, Kanagawa 237-0061, Japan
| | - T Moritaki
- Toba Aquarium, 3-3-6 Toba, Toba, Mie 517-8517, Japan
| | - G C Winters
- The Whitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA; Department of Neuroscience, University of Florida, Gainesville, FL 32611, USA
| | - A B Kohn
- The Whitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA
| | - L L Moroz
- The Whitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA; Department of Neuroscience, University of Florida, Gainesville, FL 32611, USA; **McKnight Brain Institute, University of Florida, Gainesville, FL 32611, USA
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Jin Z, Xu S, Yu H, Yang B, Zhao H, Zhao G. miR-125b inhibits Connexin43 and promotes glioma growth. Cell Mol Neurobiol 2013; 33:1143-8. [PMID: 24046143 DOI: 10.1007/s10571-013-9980-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 08/22/2013] [Indexed: 12/22/2022]
Abstract
MicroRNA is strongly associated with tumor growth and development. This study examined the potential roles of miR-125b in glioma growth. We found that miR-125b promotes glioma cell line growth and clone formation, and protects the glioma cells from apoptosis in vitro. The miR-125b-transfected glioma cells also demonstrated increased growth after in vivo transplantation. We further identified that miR-125b inhibits Connexin43 expression, and the overexpression of Connexin43 antagonizes the effects of miR-125b in cell growth and anti-apoptosis. We conclude that miR-125b regulates glioma growth partly through Connexin43 protein.
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Affiliation(s)
- Zheng Jin
- Department of Neurosurgery, The First Hospital, Jilin University, Jilin, China
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Frederikse PH, Kasinathan C, Kleiman NJ. Parallels between neuron and lens fiber cell structure and molecular regulatory networks. Dev Biol 2012; 368:255-60. [PMID: 22641011 DOI: 10.1016/j.ydbio.2012.05.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Revised: 05/18/2012] [Accepted: 05/19/2012] [Indexed: 11/26/2022]
Abstract
Studies over the past fifty years have identified extensive similarities between neurons and elongated fiber cells that make up in the interior of the ocular lens. Electron micrographs showed parallels in the organization of their intracellular vesicle transport machinery and between lens fiber cell lateral protrusions and dendritic spines. Consistent with those observations, a number of gene products first characterized as highly neuron-preferred in their expression were also demonstrated in lens fiber cells. Going further, a fundamental network of regulatory factors with critical roles in determining the neuronal phenotype were also identified in lenses, and showed a corresponding mutually exclusive distribution of neural and non-neural factor isoforms in mitotic lens epithelial cells and post-mitotic fiber cells consistent with their interlocking functions in neural cells. These included REST/NRSF transcription factors, members of major RNA binding protein families, and "brain-specific" miRNAs that were each shown to have global roles in governing neural and non-neural gene expression and alternative transcript splicing in vertebrates. This review discusses these extensive parallels between neurons and fiber cells and implications regarding common themes in lens and neural cell physiology and disease, which may also suggest related evolutionary processes.
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Affiliation(s)
- Peter H Frederikse
- Department of Pharmacology and Physiology, UMDNJ-New Jersey Medical School, 185 South Orange Avenue, MSB H645, Newark, NJ 07103, United States.
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