Cited by 59Liver physiology and pathologyTissue Engineering and Regenerative MedicineGenomics and Chromatin Dynamics

In vivo CRISPR screening identifies BAZ2 chromatin remodelers as druggable regulators of mammalian liver regeneration

Open access
Jia, Yuemeng, Li, Lin, Lin, Yu-Hsuan, Gopal, Purva, Shen, Shunli, Zhou, Kejin, Yu, Xueliang, Sharma, Tripti +4 more·2022·Cell Stem Cell

Abstract

Identifying new pathways that regulate mammalian regeneration is challenging due to the paucity of in vivo screening approaches. We employed pooled CRISPR knockout and activation screening in the regenerating liver to evaluate 165 chromatin regulatory proteins. Both screens identified the imitation-SWI chromatin remodeling components Baz2a and Baz2b, not previously implicated in regeneration. In vivo sgRNA, siRNA, and knockout strategies against either paralog confirmed increased regeneration. Distinct BAZ2-specific bromodomain inhibitors, GSK2801 and BAZ2-ICR, resulted in accelerated liver healing after diverse injuries. Inhibitor-treated mice also exhibited improved healing in an inflammatory bowel disease model, suggesting multi-tissue applicability. Transcriptomics on regenerating livers showed increases in ribosomal and cell cycle mRNAs. Surprisingly, CRISPRa screening to define mechanisms showed that overproducing Rpl10a or Rpl24 was sufficient to drive regeneration, whereas Rpl24 haploinsufficiency was rate limiting for BAZ2 inhibition-mediated regeneration. The discovery of regenerative roles for imitation-SWI components provides immediate strategies to enhance tissue repair.

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Crossref · 10.1016/j.stem.2022.01.001

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  • MOSAICS is distinct from previous Fah KO based regeneration screening systems because it is designed to assess a much higher density of mutant clones during homeostasis, and does not require rapid proliferation based selection of FAH expressing clones.

    “MOSAICS is distinct from previous Fah KO based regeneration screening systems9,10 because it is designed to assess a much higher density of mutant clones during homeostasis, and does not require rapid proliferation based selection of FAH expressing clones.”

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Authors
Jia, Y., Li, L., Lin, Y.-H., Gopal, P., Shen, S., Zhou, K., Yu, X., Sharma, T., Zhang, Y., Siegwart, D. J., Ready, J. M., & Zhu, H.
Affiliations
The University of Texas Southwestern Medical Center (US)
Corresponding author
Zhu, Hao
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2022-03
Volume
29
Issue
3
Pages
372-385.e8
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W4210467898
Cited by
59
References
84
Citations by year
2026: 10 · 2025: 19 · 2024: 14 · 2023: 12 · 2022: 4
FWCI
7.30
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Cancer Institute (R01CA251928)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK111588, R01DK125396)
  • National Institute of Biomedical Imaging and Bioengineering (R01EB025192)
Topics
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
liver regeneration, chromatin remodeling, CRISPR screen, CRISPR activation, bromodomain inhibitors, ribosomal proteins, cell cycle genes, inflammatory bowel disease, tissue repair, haploinsufficiency
MeSH terms
Bromodomain Containing Proteins, Animals, Chromatin, Chromosomal Proteins, Non-Histone, Liver, Liver Regeneration, Mice, Inbred ICR, Hepatocytes, Cell Proliferation, Mice, Clustered Regularly Interspaced Short Palindromic Repeats

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