1
|
Drummer C, Vogt EJ, Heistermann M, Roshani B, Becker T, Mätz-Rensing K, Kues WA, Kügler S, Behr R. Generation and Breeding of EGFP-Transgenic Marmoset Monkeys: Cell Chimerism and Implications for Disease Modeling. Cells 2021; 10:505. [PMID: 33673402 PMCID: PMC7996964 DOI: 10.3390/cells10030505] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/18/2021] [Accepted: 02/22/2021] [Indexed: 02/07/2023] Open
Abstract
Genetic modification of non-human primates (NHP) paves the way for realistic disease models. The common marmoset is a NHP species increasingly used in biomedical research. Despite the invention of RNA-guided nucleases, one strategy for protein overexpression in NHP is still lentiviral transduction. We generated three male and one female enhanced green fluorescent protein (EGFP)-transgenic founder marmosets via lentiviral transduction of natural preimplantation embryos. All founders accomplished germline transmission of the transgene by natural mating, yielding 20 transgenic offspring together (in total, 45 pups; 44% transgenic). This demonstrates that the transgenic gametes are capable of natural fertilization even when in competition with wildtype gametes. Importantly, 90% of the transgenic offspring showed transgene silencing, which is in sharp contrast to rodents, where the identical transgene facilitated robust EGFP expression. Furthermore, we consistently discovered somatic, but so far, no germ cell chimerism in mixed wildtype/transgenic litters. Somatic cell chimerism resulted in false-positive genotyping of the respective wildtype littermates. For the discrimination of transgenic from transgene-chimeric animals by polymerase chain reaction on skin samples, a chimeric cell depletion protocol was established. In summary, it is possible to establish a cohort of genetically modified marmosets by natural mating, but specific requirements including careful promoter selection are essential.
Collapse
Affiliation(s)
- Charis Drummer
- Platform Degenerative Diseases, German Primate Center–Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
- DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, 37099 Göttingen, Germany
| | - Edgar-John Vogt
- Platform Degenerative Diseases, German Primate Center–Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
| | - Michael Heistermann
- Endocrinology Laboratory, German Primate Center–Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
| | - Berit Roshani
- Unit of Infection Models, German Primate Center–Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
| | - Tamara Becker
- Primate Husbandry, German Primate Center–Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
| | - Kerstin Mätz-Rensing
- Pathology Unit, German Primate Center–Leibniz-Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
| | - Wilfried A. Kues
- Friedrich-Loeffler-Institut, Institut für Nutztiergenetik, Mariensee, 31535 Neustadt, Germany;
| | - Sebastian Kügler
- Center for Nanoscale Microscopy and Physiology of the Brain (CNMPB) at Department of Neurology, University of Göttingen, Waldweg 33, 37073 Göttingen, Germany;
| | - Rüdiger Behr
- Platform Degenerative Diseases, German Primate Center–Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany;
- DZHK (German Center for Cardiovascular Research), Partner Site Göttingen, 37099 Göttingen, Germany
| |
Collapse
|
2
|
Vogt EJ, Tokuhiro K, Guo M, Dale R, Yang G, Shin SW, Movilla MJ, Shroff H, Dean J. Anchoring cortical granules in the cortex ensures trafficking to the plasma membrane for post-fertilization exocytosis. Nat Commun 2019; 10:2271. [PMID: 31118423 PMCID: PMC6531442 DOI: 10.1038/s41467-019-10171-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 09/24/2018] [Accepted: 04/24/2019] [Indexed: 01/13/2023] Open
Abstract
Following fertilization, cortical granules exocytose ovastacin, a metalloendopeptidase that cleaves ZP2 in the zona pellucida surrounding mouse eggs to prevent additional sperm binding. Using high- and super-resolution imaging with ovastacinmCherry as a fluorescent marker, we characterize cortical granule dynamics at single granule resolution in transgenic mouse eggs. Newly-developed imaging protocols provide an unprecedented view of vesicular dynamics near the plasma membrane in mouse eggs. We discover that cortical granule anchoring in the cortex is dependent on maternal MATER and document that myosin IIA is required for biphasic trafficking to the plasma membrane. We observe local clearance of cortical actin during exocytosis and determine that pharmacologic or genetic disruption of trafficking to the plasma membrane impairs secretion of cortical granules and results in polyspermy. Thus, the regulation of cortical granule dynamics at the cortex-plasma membrane interface is critical for exocytosis and the post-fertilization block to sperm binding that ensures monospermic fertilization.
Collapse
Affiliation(s)
- Edgar-John Vogt
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
- Charité - Universitätsmedizin Berlin, Augustenburger Platz 1, 13353, Berlin, Germany
| | - Keizo Tokuhiro
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
- Department of Genome Editing, Institute of Biomedical Science, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka, 573-1010, Japan
| | - Min Guo
- Section on High Resolution Optical Imaging, NIBIB, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Ryan Dale
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
- Bioinformatics and Scientific Programming Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Guanghui Yang
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Seung-Wook Shin
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Maria Jimenez Movilla
- Department of Cell Biology and Histology, Medical School, University of Murcia, IMIB, 30100, Murcia, Spain
| | - Hari Shroff
- Section on High Resolution Optical Imaging, NIBIB, National Institutes of Health, Bethesda, MD, 20892, USA
- Advanced Imaging and Microscopy Resource, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Jurrien Dean
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD, 20892, USA.
| |
Collapse
|