Cited by 50Wnt/β-catenin signaling in development and cancerLiver physiology and pathologyTissue Engineering and Regenerative Medicine

Tissue-targeted R-spondin mimetics for liver regeneration

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Zhang, Zhengjian, Broderick, Caroline, Nishimoto, Marni, Yamaguchi, Teppei, Lee, Sung-Jin, Zhang, Haili, Chen, Hui, Patel, Mehaben +6 more·2020·Scientific Reports

Abstract

R-spondin (RSPO) proteins amplify Wnt signaling and stimulate regeneration in a variety of tissues. To repair tissue in a tissue-specific manner, tissue-targeted RSPO mimetic molecules are desired. Here, we mutated RSPO (RSPO2 F105R/F109A) to eliminate LGR binding while preserving ZNRF3/RNF43 binding and targeted the mutated RSPO to a liver specific receptor, ASGR1. The resulting bi-specific molecule (αASGR1-RSPO2-RA) enhanced Wnt signaling effectively in vitro, and its activity was limited to ASGR1 expressing cells. Systemic administration of αASGR1-RSPO2-RA in mice specifically upregulated Wnt target genes and stimulated cell proliferation in liver but not intestine (which is more responsive to non-targeted RSPO2) in healthy mice, and improved liver function in diseased mice. These results not only suggest that a tissue-specific RSPO mimetic protein can stimulate regeneration in a cell-specific manner, but also provide a blueprint of how a tissue-specific molecule might be constructed for applications in a broader context.

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Crossref · 10.1038/s41598-020-70912-3

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  • Treatment with RSPO ligands or tetravalent FZD-LRP antibodies enhanced WNT/β-catenin signalling, accelerated liver regeneration and increased metabolic function in diverse injury models.

    “Treatment with RSPO ligands44,158 or tetravalent FZD-LRP antibodies25 enhanced WNT/β-catenin signalling, accelerated liver regeneration and increased metabolic function in diverse injury models.”

    From Distinct hepatocyte identities in liver homeostasis and regeneration (2023) · cites this paper as [158]

    The Results section (“Liver-targeted RSPO mimetics improves liver function in diseased mouse models”; page unavailable) reports increased Wnt-target gene expression, a proliferation marker, and faster recovery of a liver-function measure after RSPO treatment. It also reports increased expression of metabolic enzymes, but only suggests a potential metabolic benefit. The experiments use a chronic thioacetamide injury model, not diverse injury models, and do not directly demonstrate accelerated liver regeneration. (LLM, conf=0.85)

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Authors
Zhang, Z., Broderick, C., Nishimoto, M., Yamaguchi, T., Lee, S.-J., Zhang, H., Chen, H., Patel, M., Ye, J., Ponce, A., Brady, J., Baribault, H., Li, Y., & Yeh, W.-C.
Affiliations
Surrozen, Inc. (United States) (US)
Corresponding author
  • Li, Yang
  • Yeh, Wen-Chen
Venue
Scientific Reports
Published
2020-08-18
Volume
10
Issue
1
Pages
13951-13951
ISSN
2045-2322 (ISSN-L)
OpenAlex
W3065573086
Cited by
50
References
29
Citations by year
2025: 8 · 2024: 16 · 2023: 14 · 2022: 9 · 2021: 3
FWCI
2.11
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
Surrozen, Inc.
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
Keywords
R-spondin, RSPO2, Wnt signaling, liver regeneration, ASGR1, liver function, cell proliferation
MeSH terms
R-Spondins, Animals, Cell Line, Humans, Liver Regeneration, Male, Mice, Inbred C57BL, Signal Transduction, Thrombospondins, Intercellular Signaling Peptides and Proteins, Asialoglycoprotein Receptor, Receptors, G-Protein-Coupled, Ubiquitin-Protein Ligases, Cell Proliferation, beta Catenin, Mice, Drug Discovery, HEK293 Cells, Wnt Signaling Pathway

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