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- W2735355232 abstract "Myc proto-oncogenes regulate diverse cellular processes during development, but their roles during morphogenesis of specific tissues are not fully understood. We found that c-myc regulates cell proliferation in mouse lens development and previous genome-wide studies suggested functional roles for N-myc in developing lens. Here, we examined the role of N-myc in mouse lens development. Genetic inactivation of N-myc in the surface ectoderm or lens vesicle impaired eye and lens growth, while late inactivation in lens fibers had no effect. Unexpectedly, defective growth of N-myc-deficient lenses was not associated with alterations in lens progenitor cell proliferation or survival. Notably, N-myc-deficient lens exhibited a delay in degradation of DNA in terminally differentiating lens fiber cells. RNA-sequencing analysis of N-myc-deficient lenses identified a cohort of down-regulated genes associated with fiber cell differentiation that included DNaseIIβ. Further, an integrated analysis of differentially expressed genes in N-myc-deficient lens using normal lens expression patterns of iSyTE, N-myc-binding motif analysis and molecular interaction data from the String database led to the derivation of an N-myc-based gene regulatory network in the lens. Finally, analysis of N-myc and c-myc double-deficient lens demonstrated that these Myc genes cooperate to drive lens growth prior to lens vesicle stage. Together, these findings provide evidence for exclusive and cooperative functions of Myc transcription factors in mouse lens development and identify novel mechanisms by which N-myc regulates cell differentiation during eye morphogenesis." @default.
- W2735355232 created "2017-07-21" @default.
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- W2735355232 date "2017-09-01" @default.
- W2735355232 modified "2023-10-18" @default.
- W2735355232 title "N-myc regulates growth and fiber cell differentiation in lens development" @default.
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- W2735355232 doi "https://doi.org/10.1016/j.ydbio.2017.07.002" @default.
- W2735355232 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5586101" @default.
- W2735355232 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28716713" @default.
- W2735355232 hasPublicationYear "2017" @default.
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