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Related Experiment Video

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Optimization of Renal Organoid and Organotypic Culture for Vascularization, Extended Development, and Improved Microscopy Imaging
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Kidney regeneration using developing xenoembryo.

Akira Fukui1, Takashi Yokoo

  • 1Division of Nephrology and Hypertension, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan.

Current Opinion in Organ Transplantation
|February 20, 2015
PubMed
Summary

Researchers are advancing kidney regeneration using human mesenchymal stem cells (hMSCs) in developing embryos. Future neokidney generation from patient cells shows promise for clinical applications.

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Area of Science:

  • Regenerative Medicine
  • Stem Cell Biology
  • Urology

Background:

  • Kidney disease affects millions globally, necessitating novel therapeutic strategies.
  • Current treatments like dialysis and transplantation have limitations.
  • Regenerative medicine offers a potential solution for kidney repair and replacement.

Purpose of the Study:

  • To review recent progress in kidney regeneration.
  • To highlight a study using developing xenoembryos for differentiating human mesenchymal stem cells (hMSCs).
  • To outline the principles, advances, and challenges in generating neokidneys.

Main Methods:

  • Utilizing developing xenoembryos to differentiate human mesenchymal stem cells (hMSCs).
  • Employing glial cell-derived neurotrophic factor-expressing hMSCs for chimeric nephron formation.
  • Using blastocyst complementation with mouse pluripotent stem cells in Sall1 knockout mouse blastocysts.
  • Introducing a suicide gene in ER-E2F1 mice to eliminate xenotissues.

Main Results:

  • Successfully differentiated functional chimeric nephrons from hMSCs in developing mammalian embryos.
  • Demonstrated the feasibility of using mesenchymal stem cells (MSCs) from dialysis patients for kidney regeneration.
  • Eliminated xenotissues in transgenic mice, paving the way for xenogeneic-free regeneration.

Conclusions:

  • Kidney tissue can be generated using pluripotent stem cells or MSCs.
  • Current regenerated kidney tissue size and function are insufficient for transplantation.
  • Neokidney generation exclusively from patient-derived cells is a future goal, despite remaining ethical and technical challenges.