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Related Experiment Video

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RSPO1, a potent inducer of pancreatic β cell neogenesis.

Serena Silvano1, Tiziana Napolitano1, Magali Plaisant1

  • 1DiogenX, 180 Avenue du Prado, 13008 Marseille, France.

Cell Reports. Medicine
|May 8, 2025
PubMed
Summary

Researchers discovered RSPO1, a Wnt/β-catenin pathway agonist, can induce pancreatic beta cell replication. This finding offers new hope for diabetes treatment by promoting beta cell neogenesis.

Keywords:
Rspo1Wnt/β-catenin signalingdiabetesendocrine pancreasislets of Langerhansβ cell replication

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Area of Science:

  • Endocrinology
  • Regenerative Medicine
  • Molecular Biology

Background:

  • Pancreatic beta cell neogenesis is a promising area for diabetes research.
  • Discovery of non-toxic compounds that induce beta cell regeneration is crucial.
  • The Wnt/β-catenin pathway plays a role in cell growth and development.

Purpose of the Study:

  • To identify novel compounds that can induce pancreatic beta cell neogenesis.
  • To investigate the potential of RSPO1 as a therapeutic agent for diabetes.

Main Methods:

  • In vitro, ex vivo, and in vivo studies were conducted.
  • RSPO1's effect on Wnt/β-catenin signaling in beta cells was assessed.
  • Chemically induced and autoimmune diabetes models were used.
  • Treatment of transplanted human islets with RSPO1 was performed.

Main Results:

  • RSPO1 significantly increased beta cell neogenesis across all tested models.
  • RSPO1 activated Wnt/β-catenin signaling in beta cells.
  • RSPO1 administration prevented chemically induced and autoimmune diabetes.
  • An optimized RSPO1 analog enabled weekly administration and diabetes prevention.
  • RSPO1 treatment of human islets resulted in a 2.78-fold increase in functional beta cells within 60 days.

Conclusions:

  • RSPO1 is a potent inducer of pancreatic beta cell neogenesis.
  • RSPO1 demonstrates therapeutic potential for treating diabetes by promoting beta cell regeneration.
  • These findings offer a novel therapeutic strategy for diabetes alternative therapies.