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Here we assess the utility of several transgenic\n                    <jats:italic>Cre<\/jats:italic>\n                    lines, along with a viral approach, for targeting cerebellar Purkinje cells (PCs) in mice. Using a combination of a fluorescent reporter line (\n                    <jats:italic>Ai14<\/jats:italic>\n                    ) to indicate\n                    <jats:italic>Cre<\/jats:italic>\n                    -mediated recombination and a floxed Dystroglycan line (\n                    <jats:italic>\n                      Dag1\n                      <jats:sup>flox<\/jats:sup>\n                    <\/jats:italic>\n                    ), we show that reporter expression does not always align precisely with loss of protein. The commonly used\n                    <jats:italic>\n                      Pcp2\n                      <jats:sup>Cre<\/jats:sup>\n                    <\/jats:italic>\n                    line exhibits a gradual mosaic pattern of\n                    <jats:italic>Cre<\/jats:italic>\n                    recombination in PCs from Postnatal Day 7 (P7) to P14, while loss of Dag1 protein is not complete until P30.\n                    <jats:italic>\n                      Ptf1a\n                      <jats:sup>Cre<\/jats:sup>\n                    <\/jats:italic>\n                    drives recombination in precursor cells that give rise to GABAergic neurons in the embryonic cerebellum, including PCs and molecular layer interneurons. However, due to its transient expression in precursors,\n                    <jats:italic>\n                      Ptf1a\n                      <jats:sup>Cre<\/jats:sup>\n                    <\/jats:italic>\n                    results in stochastic loss of Dag1 protein in these neurons.\n                    <jats:italic>\n                      Nestin\n                      <jats:sup>Cre<\/jats:sup>\n                    <\/jats:italic>\n                    , which is often described as a \u201cpan-neuronal\u201d\n                    <jats:italic>Cre<\/jats:italic>\n                    line for the central nervous system, does not drive\n                    <jats:italic>Cre<\/jats:italic>\n                    -mediated recombination in PCs. We identify a\n                    <jats:italic>\n                      Calb1\n                      <jats:sup>Cre<\/jats:sup>\n                    <\/jats:italic>\n                    line that drives efficient and complete recombination in embryonic PCs, resulting in loss of Dag1 protein before the period of synaptogenesis.\n                    <jats:italic>AAV8<\/jats:italic>\n                    -mediated delivery of\n                    <jats:italic>Cre<\/jats:italic>\n                    at P0 results in gradual transduction of PCs during the second postnatal week, with loss of Dag1 protein not reaching appreciable levels until P35. These results characterize several tools for targeting conditional deletions in cerebellar PCs at different developmental stages and illustrate the importance of validating the loss of protein following recombination.\n                  <\/jats:p>","DOI":"10.1523\/eneuro.0149-24.2024","type":"journal-article","created":{"date-parts":[[2024,5,22]],"date-time":"2024-05-22T13:50:15Z","timestamp":1716385815000},"page":"ENEURO.0149-24.2024","source":"Crossref","is-referenced-by-count":12,"title":["Tools for\n                    <i>Cre<\/i>\n                    -Mediated Conditional Deletion of Floxed Alleles from Developing Cerebellar Purkinje Cells"],"prefix":"10.1523","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2319-6109","authenticated-orcid":false,"given":"Jennifer N.","family":"Jahncke","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5094-5270","authenticated-orcid":false,"given":"Kevin M.","family":"Wright","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"393","published-online":{"date-parts":[[2024,5,22]]},"reference":[{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2202-5-4"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.2","doi-asserted-by":"publisher","DOI":"10.1002\/cne.901450402"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.3","doi-asserted-by":"publisher","DOI":"10.1007\/s11248-019-00177-8"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.4","doi-asserted-by":"publisher","DOI":"10.1242\/dmm.003087"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.5","doi-asserted-by":"publisher","DOI":"10.1002\/1526-968X(200011\/12)28:3\/4<93::AID-GENE10>3.0.CO;2-W"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.6","doi-asserted-by":"publisher","DOI":"10.1016\/0006-8993(93)90584-A"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.7","doi-asserted-by":"publisher","DOI":"10.1016\/j.neuroscience.2009.01.032"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.8","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.4074-07.2008"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.9","doi-asserted-by":"publisher","DOI":"10.3389\/fnmol.2020.00164"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.10","doi-asserted-by":"publisher","DOI":"10.1126\/science.adi1024"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.11","doi-asserted-by":"publisher","DOI":"10.1016\/S0092-8674(02)00907-8"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.12","doi-asserted-by":"publisher","DOI":"10.1002\/neu.480070609"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.13","doi-asserted-by":"publisher","DOI":"10.1016\/j.cell.2018.06.035"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.14","doi-asserted-by":"publisher","DOI":"10.1016\/0169-328X(95)00056-X"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.15","doi-asserted-by":"publisher","DOI":"10.1523\/JNEUROSCI.2890-08.2008"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.16","doi-asserted-by":"publisher","DOI":"10.1006\/dbio.1998.8971"},{"key":"2024060310551994000_11.6.ENEURO.0149-24.2024.17","doi-asserted-by":"crossref","unstructured":"Feil S , Valtcheva N , Feil R (2009) Inducible cre mice. 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