Transcriptomics

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Tagger–a Swiss army knife for multiomics to dissect cell type-specific mechanisms of gene expression in mice [Ribo-Tag-RNA-seq]


ABSTRACT: We developed a knock-in mouse line that combines four enrichment tools to study gene regulatory networks of the brain and other complex tissues. As a result, chromatin, nascent RNA, translating mRNA and mature miRNA can be purified from specific cell populations. Specifically, we developed "Tagger" – a Cre and/or Flp recombinase-dependent mouse model that expresses four proteins to enable purification of distinct populations of cellular nucleic acids from specific cell types. Upon activation by cell type-directed recombinases, cells of a desired population express: 1) exogenous uracil phoshoribosyltransferase (UPRT) for tagging nascent total RNA with thiol groups upon administration of 4-thiouracil (4TU, TU-Tag), 2) epitope-tagged large ribosomal subunit protein 22 (Rpl22) to co-immunoprecipitate (co-IP) ribosome-bound mRNA (RiboTag), 3) epitope-tagged Argonaute 2 (Ago2, a component of the RNA-induced silencing complex) to co-IP mature miRNA (AgoTag), and 4) nucleus-directed mKate2 red fluorescent protein, providing good tissue penetrating transmission properties for in vivo imaging and a fluorescent nuclear tag (NucTag) for FACS enrichment of nuclei for chromatin studies.

ORGANISM(S): Mus musculus

PROVIDER: GSE123420 | GEO | 2019/10/30

REPOSITORIES: GEO

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