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Zhang Y, Sui Z, Zhang Z, Wang C, Li X, Xing F. Cloning, tissue expression and imprinting status analysis of the NDN gene in Dolang sheep. Mol Biol Rep 2024; 51:166. [PMID: 38252343 DOI: 10.1007/s11033-023-08990-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/10/2023] [Indexed: 01/23/2024]
Abstract
BACKGROUND Genomic imprinting refers to expressing parent-specific genes in mammalian diploid cells. The NDN gene is maternally imprinted in humans and mice and correlates with the timing of puberty. This study aimed to investigate its imprinting status and its relationship with the onset of puberty in Dolang sheep. METHODS AND RESULTS In this study, cloning and sequencing obtained the NDN gene cDNA sequence of 1082 bp of Dolang sheep, coding for 325 amino acids. Similarity analysis and phylogenetic tree showed that the NDN gene conformed to the law of speciation and was highly conserved among mammals. RT-qPCR results showed the highest expression of NDN mRNA was found in the hypothalamus at puberty, and the expression was significantly increased and then significantly decreased from prepuberty to postpuberty in the hypothalamus, pituitary, and ovary and oviduct. Based on expressed single nucleotide polymorphism (SNP), the NDN gene was expressed monoallelically in the tissues of adult and neonatal umbilical cords, and the expressed allele was paternally inherited. The NDN promoter region of 3400 bp was obtained by cloning and identified in monoallelic-expressing tissues (hypothalamus, ovary, spleen) as a differentially methylated region (DMR). CONCLUSION These findings will enrich the number of imprinted genes in sheep and suggest that the NDN gene could be a candidate gene for studying puberty initiation in Dolang sheep.
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Affiliation(s)
- Yongjie Zhang
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Zhiyuan Sui
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Zhishuai Zhang
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Chenguang Wang
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Xiaojun Li
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Feng Xing
- College of Animal Science and Technology, Tarim University, Alar, Xinjiang, China.
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China.
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Benatti HR, Prestigiacomo RD, Taghian T, Miller R, King R, Gounis MJ, Celik U, Bertrand S, Tuominen S, Bierfeldt L, Parsley E, Gallagher J, Hall EF, McElroy AW, Sena-Esteves M, Khvorova A, Aronin N, Gray-Edwards HL. Awake intracerebroventricular delivery and safety assessment of oligonucleotides in a large animal model. Mol Ther Methods Clin Dev 2023; 31:101122. [PMID: 37920238 PMCID: PMC10618110 DOI: 10.1016/j.omtm.2023.101122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 09/23/2023] [Indexed: 11/04/2023]
Abstract
Oligonucleotide therapeutics offer great promise in the treatment of previously untreatable neurodegenerative disorders; however, there are some challenges to overcome in pre-clinical studies. (1) They carry a well-established dose-related acute neurotoxicity at the time of administration. (2) Repeated administration into the cerebrospinal fluid may be required for long-term therapeutic effect. Modifying oligonucleotide formulation has been postulated to prevent acute toxicity, but a sensitive and quantitative way to track seizure activity in pre-clinical studies is lacking. The use of intracerebroventricular (i.c.v.) catheters offers a solution for repeated dosing; however, fixation techniques in large animal models are not standardized and are not reliable. Here we describe a novel surgical technique in a sheep model for i.c.v. delivery of neurotherapeutics based on the fixation of the i.c.v. catheter with a 3D-printed anchorage system composed of plastic and ceramic parts, compatible with magnetic resonance imaging, computed tomography, and electroencephalography (EEG). Our technique allowed tracking electrical brain activity in awake animals via EEG and video recording during and for the 24-h period after administration of a novel oligonucleotide in sheep. Its anchoring efficiency was demonstrated for at least 2 months and will be tested for up to a year in ongoing studies.
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Affiliation(s)
- Hector Ribeiro Benatti
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Rachel D. Prestigiacomo
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Toloo Taghian
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
| | - Rachael Miller
- Department of Endocrinology, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- RNA Therapeutic Institute, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Robert King
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
| | - Matthew J. Gounis
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
| | - Ugur Celik
- Center for Clinical Research, UMass Chan Medical School, 55 N Lake Ave, Worcester MA 01655, USA
| | - Stephanie Bertrand
- Cummings School of Veterinary Medicine, Tufts University, Grafton MA 01536, USA
| | - Susan Tuominen
- Department of Animal Medicine, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Lindsey Bierfeldt
- Department of Animal Medicine, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Elizabeth Parsley
- Cummings School of Veterinary Medicine, Tufts University, Grafton MA 01536, USA
| | - Jillian Gallagher
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Erin F. Hall
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Abigail W. McElroy
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Miguel Sena-Esteves
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- Department of Neurology, UMass Chan Medical School, 368 Plantation Street, Worcester MA 01605, USA
| | - Anastasia Khvorova
- RNA Therapeutic Institute, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Neil Aronin
- Department of Endocrinology, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- RNA Therapeutic Institute, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
| | - Heather L. Gray-Edwards
- Horae Gene Therapy Center, UMass Chan Medical School, 368 Plantation Street, Worcester, MA 01605, USA
- Department of Radiology, UMass Chan Medical School, 55 N Lake Ave, Worcester, MA 01655, USA
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Zhang Y, Sui Z, Zhang Z, Wang C, Li X, Xing F. Analysis of the Imprinting Status and Expression of the MAGEL2 Gene During Initiation at Puberty in the Dolang Sheep. DNA Cell Biol 2023; 42:689-696. [PMID: 37843913 DOI: 10.1089/dna.2023.0166] [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] [Indexed: 10/17/2023] Open
Abstract
Genomic imprinting refers to the expression of parent-specific genes in diploid mammalian cells. MAGEL2 gene is a maternally imprinted gene that has been identified in mice and humans and is associated with the onset of puberty. The purpose of this study was to investigate its imprinting status and its relationship with the onset of puberty in Dolang sheep. The sequence of 3734 bp cDNA of MAGEL2 in Dolang sheep was obtained by cloning and sequencing, encoding 1173 amino acids. The results of the nucleotide and amino acid similarity analysis showed that it was highly conserved among different mammalian species. The MAGEL2 gene was expressed monoallelically in the tissues of adult and neonatal umbilical cords, and the expressed allele was paternally inherited. Real Time quantitative PCR (RT-qPCR) results showed that the MAGEL2 gene was highly expressed in the hypothalamus and pituitary gland, increased significantly from prepuberty to puberty, and decreased significantly after puberty. This study suggests that MAGEL2 is a paternally expressed and maternally imprinted gene in Dolang sheep, which may be involved in the initiation of puberty in Dolang sheep. This study provides a theoretical basis for further research on the mechanism of the imprinted gene MAGEL2 regulating the onset of puberty in sheep, and provides a new idea for the future research on the mechanism of onset of puberty in sheep.
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Affiliation(s)
- Yongjie Zhang
- College of Animal Science and Technology, Tarim University, Xinjiang Production and Construction Corps, Alar, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Zhiyuan Sui
- College of Animal Science and Technology, Tarim University, Xinjiang Production and Construction Corps, Alar, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Zhishuai Zhang
- College of Animal Science and Technology, Tarim University, Xinjiang Production and Construction Corps, Alar, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Chenguang Wang
- College of Animal Science and Technology, Tarim University, Xinjiang Production and Construction Corps, Alar, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Xiaojun Li
- College of Animal Science and Technology, Tarim University, Xinjiang Production and Construction Corps, Alar, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
| | - Feng Xing
- College of Animal Science and Technology, Tarim University, Xinjiang Production and Construction Corps, Alar, China
- Key Laboratory of Tarim Animal Husbandry Science and Technology, Xinjiang Production and Construction Corps, Alar, China
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