The Australian sheep blowfly, Lucilia cuprina, is the most important economic insect pest for the sheep industries in Australia and New Zealand. piggyBac-mediated germ-line transformation of L. cuprina was achieved with a helper plasmid that had the Drosophila melanogaster hsp70 promoter controlling expression of the transposase and a piggyBac vector with an EGFP marker gene. Two transformant lines were obtained, at a frequency of approximately 1-2% per fertile G0. One of these lines has a single copy of the transgene, the other most likely has four copies. This is the first report of germ-line transformation of L. cuprina and is an important step towards the generation of engineered strains that would be suitable for male-only release eradication/suppression programmes.
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http://dx.doi.org/10.1046/j.0962-1075.2001.00301.x | DOI Listing |
Stem Cell Res
February 2025
Key Laboratory of Tropical Translational Medicine of Ministry of Education & Key Laboratory of Brain Science Research Transformation in Tropical Environment of Hainan Province, Department of Biochemistry and Molecular Biology, School of Basic Medicine and Life Sciences, Hainan Medical University, Haikou, Hainan 571199, China; Hainan Provincial Key Laboratory for Human Reproductive Medicine and Genetic Research, Key Laboratory of Reproductive Health Diseases Research and Translation (Hainan Medical University), Ministry of Education, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, China; Department of Reproductive Medicine, Hainan Provincial Clinical Research Center for Thalassemia, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, China; National Center for International Research "China-Myanmar Joint Research Center for Prevention and Treatment of Regional Major Disease" by the Ministry of Science and Technology of China, Haikou, Hainan 571101, China; Haikou Key Laboratory for Preservation of Human Genetic Resource, The First Affiliated Hospital of Hainan Medical University, Hainan Medical University, Haikou, Hainan 571101, China. Electronic address:
Human embryonic stem cell (hESC) lines are vital tools for studying gene function, disease modeling, and therapy. We generated a USP9Y knockout hESC line using CRISPR-Cas9 in the male-derived H1 line. Targeted deletion of the USP9Y gene was confirmed via PCR and sequencing.
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December 2024
Stowers Institute for Medical Research, Kansas City, MO, 64110, USA; Howard Hughes Medical Institute, Stowers Institute for Medical Research, Kansas City, MO, 64110, USA. Electronic address:
The cell nuclei of Ophisthokonts, the eukaryotic supergroup defined by fungi and metazoans, is remarkable in the constancy of their double-membraned structure in both somatic and germ cells. Such remarkable structural conservation underscores common and ancient evolutionary origins. Yet, the dynamics of disassembly and reassembly displayed by Ophisthokont nuclei vary extensively.
View Article and Find Full Text PDFAnat Rec (Hoboken)
December 2024
Department of Comparative Anatomy, Institute of Zoology and Biomedical Research, Faculty of Biology, Jagiellonian University, Krakow, Poland.
Chameleons are a family of lizards distinguished by several unique features related to their arboreal lifestyles, such as a ballistic tongue, skin color changes, independent movement of both eyes, a prehensile tail, and cleft hands and feet. The veiled chameleon (Chamaeleo calyptratus) has been proposed as a promising model species for studying squamate biology. Despite its potential, the developmental biology of this species remains poorly understood, particularly in terms of gonadal development.
View Article and Find Full Text PDFFly (Austin)
December 2025
Department of Biology, Indian Institute of Science Education & Research, Pune, India.
Proper formation and specification of Primordial Germ Cells (PGCs) is of special significance as they gradually transform into Germline Stem Cells (GSCs) that are ultimately responsible for generating the gametes. Intriguingly, not only the PGCs constitute the only immortal cell type but several specific determinants also underlying PGC specification such as Vasa, Nanos and Germ-cell-less are conserved through evolution. In , PGC formation and specification depends on two independent factors, the maternally deposited specialized cytoplasm (or germ plasm) enriched in germline determinants, and the mechanisms that execute the even partitioning of these determinants between the daughter cells.
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December 2024
Kavli Institute for Theoretical Physics, University of California, Santa Barbara, Santa Barbara, United States.
Shape changes of epithelia during animal development, such as convergent extension, are achieved through the concerted mechanical activity of individual cells. While much is known about the corresponding large-scale tissue flow and its genetic drivers, fundamental questions regarding local control of contractile activity on the cellular scale and its embryo-scale coordination remain open. To address these questions, we develop a quantitative, model-based analysis framework to relate cell geometry to local tension in recently obtained time-lapse imaging data of gastrulating embryos.
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