The seventh iteration of the reference genome assembly for Rattus norvegicus-mRatBN7.2-corrects numerous misplaced segments and reduces base-level errors by approximately 9-fold and increases contiguity by 290-fold compared with its predecessor. Gene annotations are now more complete, improving the mapping precision of genomic, transcriptomic, and proteomics datasets. We jointly analyzed 163 short-read whole-genome sequencing datasets representing 120 laboratory rat strains and substrains using mRatBN7.2. We defined ∼20.0 million sequence variations, of which 18,700 are predicted to potentially impact the function of 6,677 genes. We also generated a new rat genetic map from 1,893 heterogeneous stock rats and annotated transcription start sites and alternative polyadenylation sites. The mRatBN7.2 assembly, along with the extensive analysis of genomic variations among rat strains, enhances our understanding of the rat genome, providing researchers with an expanded resource for studies involving rats.

• Klíčová slova
• Rnor_6.0, genetic map, heterogeneous stock, hybrid rat diversity panel, inbred strains, mRatBN7.2, phylogenetic tree, rat, recombinant inbred, reference genome,
• MeSH
• anotace sekvence MeSH
• genetická variace genetika   MeSH
• genom * genetika   MeSH
• genomika * MeSH
• krysa rodu Rattus MeSH
• sekvenování celého genomu MeSH
• zvířata MeSH
• Check Tag
• krysa rodu Rattus MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH

The seventh iteration of the reference genome assembly for Rattus norvegicus-mRatBN7.2-corrects numerous misplaced segments and reduces base-level errors by approximately 9-fold and increases contiguity by 290-fold compared to its predecessor. Gene annotations are now more complete, significantly improving the mapping precision of genomic, transcriptomic, and proteomics data sets. We jointly analyzed 163 short-read whole genome sequencing datasets representing 120 laboratory rat strains and substrains using mRatBN7.2. We defined ~20.0 million sequence variations, of which 18.7 thousand are predicted to potentially impact the function of 6,677 genes. We also generated a new rat genetic map from 1,893 heterogeneous stock rats and annotated transcription start sites and alternative polyadenylation sites. The mRatBN7.2 assembly, along with the extensive analysis of genomic variations among rat strains, enhances our understanding of the rat genome, providing researchers with an expanded resource for studies involving rats.

• Klíčová slova
• Genetic Map, Heterogeneous Stock, Hybrid Rat Diversity Panel, Inbred Strains, Phylogenetic Tree, Rat, Recombinant Inbred, Reference Genome, Rnor_6.0, mRatBN7.2,
• Publikační typ
• časopisecké články MeSH
• preprinty MeSH

We describe a protocol for high-efficiency germline transgenesis and sustained transgene expression in two important biomedical models, the mouse and the rat, by using the Sleeping Beauty transposon system. The procedure is based on co-injection of synthetic mRNA encoding the SB100X hyperactive transposase, together with circular plasmid DNA carrying a transgene construct flanked by binding sites for the transposase, into the pronuclei of fertilized oocytes. Upon translation of the transposase mRNA, enzyme-mediated excision of the transgene cassettes from the injected plasmids followed by permanent genomic insertion produces stable transgenic animals. Generation of a germline-transgenic founder animal by using this protocol takes ∼3 months. Transposon-mediated transgenesis compares favorably in terms of both efficiency and reliable transgene expression with classic pronuclear microinjection, and it offers comparable efficacies to lentiviral approaches without limitations on vector design, issues of transgene silencing, and the toxicity and biosafety concerns of working with viral vectors.

• MeSH
• geneticky modifikovaná zvířata * MeSH
• hlodavci genetika   MeSH
• krysa rodu Rattus MeSH
• mikroinjekce MeSH
• myši inbrední C57BL MeSH
• myši transgenní MeSH
• myši MeSH
• potkani inbrední F344 MeSH
• potkani transgenní MeSH
• technika přenosu genů * MeSH
• transgeny MeSH
• transposasy genetika   MeSH
• transpozibilní elementy DNA * MeSH
• vazebná místa MeSH
• zárodečné buňky MeSH
• zvířata MeSH
• Check Tag
• krysa rodu Rattus MeSH
• mužské pohlaví MeSH
• myši MeSH
• ženské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• transposasy MeSH
• transpozibilní elementy DNA * MeSH