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There is a need for reporter stem cell lines to allow in vitro studies on retinal progenitors and photoreceptors and their developmental dynamics or properties and to test therapeutic approaches. The isolation of pure progenitor populations or photoreceptor precursors may serve for drug, gene, and cell therapy development. Here, we generated a dual-reporter mouse embryonic stem cell line Crx-GFP;Rax-mCherry enabling the visualization or isolation of photoreceptors and retinal progenitors from retinal organoid settings. From day 4 organoids, we isolated mCherry-positive cells to assess their early retinal progenitor identity with proliferation tests as well as transcriptomic and proteomic profiling. The timing of eye field transcription factor expression at the transcriptomic and protein levels is in accordance with mouse retinogenesis. This new line will be helpful for rapidly investigating biological questions or testing therapeutics before using human induced pluripotent stem cells (iPSCs), which require a much longer time for retinal organoid formation.<\/jats:p>","DOI":"10.3390\/cells14040252","type":"journal-article","created":{"date-parts":[[2025,2,11]],"date-time":"2025-02-11T09:36:05Z","timestamp":1739266565000},"page":"252","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Generation of a Double Reporter mES Cell Line to Simultaneously Trace the Generation of Retinal Progenitors and Photoreceptors"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3378-7084","authenticated-orcid":false,"given":"Oleksandr","family":"Zabiegalov","sequence":"first","affiliation":[{"name":"Unit of Retinal Degeneration and Regeneration, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2986-4489","authenticated-orcid":false,"given":"Adeline","family":"Berger","sequence":"additional","affiliation":[{"name":"Unit of Epigenetics of Ocular Diseases, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5594-9913","authenticated-orcid":false,"given":"Dhryata","family":"Kamdar","sequence":"additional","affiliation":[{"name":"Ophthalmic Genetics Group, Institute of Molecular and Clinical Ophthalmology, 4031 Basel, Switzerland"},{"name":"Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kabirou","family":"Adamou","sequence":"additional","affiliation":[{"name":"Group for Retinal Disorders Research, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chuanxi","family":"Tian","sequence":"additional","affiliation":[{"name":"Unit of Retinal Degeneration and Regeneration, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martial","family":"Mbefo","sequence":"additional","affiliation":[{"name":"Unit of Retinal Degeneration and Regeneration, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mathieu","family":"Quinodoz","sequence":"additional","affiliation":[{"name":"Ophthalmic Genetics Group, Institute of Molecular and Clinical Ophthalmology, 4031 Basel, Switzerland"},{"name":"Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6644-5414","authenticated-orcid":false,"given":"Florian","family":"Udry","sequence":"additional","affiliation":[{"name":"Unit of Retinal Degeneration and Regeneration, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0733-9950","authenticated-orcid":false,"given":"Carlo","family":"Rivolta","sequence":"additional","affiliation":[{"name":"Ophthalmic Genetics Group, Institute of Molecular and Clinical Ophthalmology, 4031 Basel, Switzerland"},{"name":"Department of Ophthalmology, University of Basel, 4031 Basel, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1006-9733","authenticated-orcid":false,"given":"Corinne","family":"Kostic","sequence":"additional","affiliation":[{"name":"Group for Retinal Disorders Research, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yvan","family":"Arsenijevic","sequence":"additional","affiliation":[{"name":"Unit of Retinal Degeneration and Regeneration, Department of Ophthalmology, University of Lausanne, 1004 Lausanne, Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"388","DOI":"10.1016\/j.molmed.2022.03.001","article-title":"Strategies of Pluripotent Stem Cell-Based Therapy for Retinal Degeneration: Update and Challenges","volume":"28","author":"Maeda","year":"2022","journal-title":"Trends Mol. 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