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Etiological characterization of multiple recombinant lineages of TJ-C6 porcine reproductive and respiratory syndrome virus in Tianjin, Northern China.
Vet Res Commun
January 2025
College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, No.22, Jinjing Road, Xiqing District, Tianjin, 300384, China.
Recent outbreaks of PRRSV in live attenuated vaccine-immunized pig farms in Tianjin, China have raised questions about the etiological characteristics and pathogenicity of the PRRSV variant, which remains unknown. In this study, a multiple lineages recombinant PRRSV strain named TJ-C6, was isolated and identified. Phylogenetic trees and genome homology analyses revealed that TJ-C6 belonged to lineage 1.
View Article and Find Full Text PDFFam170a deficiency causes male infertility by impairing histone-to-protamine exchange during mouse spermiogenesis.
Nucleic Acids Res
January 2025
Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong 226001, China.
Chromatin remodeling, which involves the histone-to-protamine exchange process during spermiogenesis, is crucial for sperm nuclear condensation and male fertility. However, the key regulators and underlying molecular mechanisms involved in this process remain largely unexplored. In this study, we discovered that deficiency in the family with sequence similarity 170 member A (Fam170a) led to abnormal sperm nuclear morphology and male infertility in mice, mirroring the observation of very low Fam170a transcription levels in sperm of infertile men with teratozoospermia.
View Article and Find Full Text PDFOpen Rotaxane Surgery: What Molecular Editing Can Offer to Supramolecular Chemistry?
Chempluschem
January 2025
University of Wroclaw: Uniwersytet Wroclawski, Chemistry, 14 F. Joliot-Curie 14, 50383, Wroclaw, POLAND.
The skeletal editing approach represents a paradigm shift in organic synthesis by directly targeting the molecular skeleton instead of relying on often long and complicated series of organic transformations. Recent advancements in nitrogen atom deletion reactions have enabled unprecedented late-stage, precise modifications of bioactive compounds and complex natural products, influencing a seemingly distant field such as supramolecular chemistry. In a recent contribution, the Leigh group demonstrated the extrusion of a nitrogen atom from an axle of a [2]rotaxane, extending the applicability of molecular editing to complex, mechanically interlocked architectures.
View Article and Find Full Text PDFMultiple gene-deletion vaccinia virus Tiantan strain against mpox.
Virol J
January 2025
Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, 130122, People's Republic of China.
Monkeypox virus (MPXV) is an important zoonotic pathogenic virus, which poses serious threats to public health. MPXV infection can be prevented by immunization against the variola virus. Because of the safety risks and side effects of vaccination with live vaccinia virus (VACV) strain Tian Tan (VTT), we constructed two gene-deleted VTT recombinants (TTVAC7 and TTVC5).
View Article and Find Full Text PDFGenome-Wide Approach Identifies Natural Large-Fragment Deletion in ASFV Strains Circulating in Italy During 2023.
Pathogens
January 2025
National Reference Laboratory (NRL) for Swine Fever, Istituto Zooprofilattico Sperimentale dell' Umbria e delle Marche "Togo Rosati", 06126 Perugia, Italy.
African swine fever (ASF), characterized by high mortality rates in infected animals, remains a significant global veterinary and economic concern, due to the widespread distribution of ASF virus (ASFV) genotype II across five continents. In this study, ASFV strains collected in Italy during 2022-2023 from two geographical clusters, North-West (Alessandria) and Calabria, were fully sequenced. In addition, an in vivo experiment in pigs was performed.
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