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Initial Characterization of WDR5B Reveals a Role in the Proliferation of Retinal Pigment Epithelial Cells

Cells, ISSN: 2073-4409, Vol: 13, Issue: 14
2024
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    Citations
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  • 1
    Mentions
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    Social Media
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  • Mentions
    1
    • News Mentions
      1
      • News
        1

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University of California Researchers Describe Research in Biology (Initial Characterization of WDR5B Reveals a Role in the Proliferation of Retinal Pigment Epithelial Cells)

2024 AUG 12 (NewsRx) -- By a News Reporter-Staff News Editor at Genomics & Genetics Daily -- A new study on biology is now available.

Article Description

The chromatin-associated protein WDR5 has been widely studied due to its role in histone modification and its potential as a pharmacological target for the treatment of cancer. In humans, the protein with highest sequence homology to WDR5 is encoded by the retrogene WDR5B, which remains unexplored. Here, we used CRISPR-Cas9 genome editing to generate WDR5B knockout and WDR5B-FLAG knock-in cell lines for further characterization. In contrast to WDR5, WDR5B exhibits low expression in pluripotent cells and is upregulated upon neural differentiation. Loss or shRNA depletion of WDR5B impairs cell growth and increases the fraction of non-viable cells in proliferating retinal pigment epithelial (RPE) cultures. CUT&RUN chromatin profiling in RPE and neural progenitors indicates minimal WDR5B enrichment at established WDR5 binding sites. These results suggest that WDR5 and WDR5B exhibit several divergent biological properties despite sharing a high degree of sequence homology.

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