Summary: WHICHLOCI is a program that determines the relative discriminatory power of alternate genetic loci and loci combinations for population assignment of individuals.
Availability: http://www.oregonstate.edu/dept/comes/genetics/software.htm
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| http://dx.doi.org/10.1093/bioinformatics/btg172 | DOI Listing |
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Adult bi-paternal offspring generated through direct modification of imprinted genes in mammals.
Cell Stem Cell
January 2025
State Key Laboratory of Organ Regeneration and Reconstruction, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China; Bejing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China. Electronic address:
Imprinting abnormalities pose a significant challenge in applications involving embryonic stem cells, induced pluripotent stem cells, and animal cloning, with no universal correction method owing to their complexity and stochastic nature. In this study, we targeted these defects at their source-embryos from same-sex parents-aiming to establish a stable, maintainable imprinting pattern de novo in mammalian cells. Using bi-paternal mouse embryos, which exhibit severe imprinting defects and are typically non-viable, we introduced frameshift mutations, gene deletions, and regulatory edits at 20 key imprinted loci, ultimately achieving the development of fully adult animals, albeit with a relatively low survival rate.
View Article and Find Full Text PDFThe genetic architecture of resistance to flubendiamide insecticide in Helicoverpa armigera (Hübner).
PLoS One
January 2025
Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba, São Paulo, Brazil.
Insecticide resistance is a major problem in food production, environmental sustainability, and human health. The cotton bollworm Helicoverpa armigera is a globally distributed crop pest affecting over 300 crop species. H.
View Article and Find Full Text PDFCross-trait GWAS in COVID-19 and systemic sclerosis reveals novel genes implicated in fibrotic and inflammation pathways.
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Department of Cell Biology and Immunology, Institute of Parasitology and Biomedicine López-Neyra, CSIC, Granada, Spain.
Objectives: COVID-19 and systemic sclerosis (SSc) share multiple similarities in their clinical manifestations, alterations in immune response, and therapeutic options. These resemblances have also been identified in other immune-mediated inflammatory diseases where a common genetic component has been found. Thus, we decided to evaluate for the first time this shared genetic architecture with SSc.
View Article and Find Full Text PDFGenomic Footprints of Hybridisation in North Atlantic Eels (Anguilla anguilla and A. rostrata).
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Department of Biology, Aarhus University, Aarhus C, Denmark.
Understanding interspecific introgressive hybridisation and the biological significance of introgressed variation remains an important goal in population genomics. European (Anguilla anguilla) and American eel (A. rostrata) represent a remarkable case of hybridisation.
View Article and Find Full Text PDFAn evolved, orthogonal ssDNA generator for targeted hypermutation of multiple genomic loci.
Nucleic Acids Res
January 2025
Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
Achieving targeted hypermutation of specific genomic sequences without affecting other regions remains a key challenge in continuous evolution. To address this, we evolved a T7 RNA polymerase (RNAP) mutant that synthesizes single-stranded DNA (ssDNA) instead of RNA in vivo, while still exclusively recognizing the T7 promoter. By increasing the error rate of the T7 RNAP mutant, it generates mutated ssDNA that recombines with homologous sequences in the genome, leading to targeted genomic hypermutation.
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