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Related Experiment Video

Updated: May 22, 2026

Protocol for Human Blastoids Modeling Blastocyst Development and Implantation

Protocol for Human Blastoids Modeling Blastocyst Development and Implantation

Published on: August 10, 2022

Rethinking the blastema.

Jeong S Hyun¹, Michael T Chung, Victor W Wong

¹Stanford, Calif. From the Hagey Laboratory for Pediatric Regenerative Medicine, the Division of Plastic and Reconstructive Surgery, Department of Surgery, and the Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine.

Plastic and Reconstructive Surgery

|May 1, 2012

Summary

This summary is machine-generated.

Limb regeneration varies by species, with some capable of full limb restoration. Recent research indicates that tissue-resident stem cells are key to this conserved regenerative ability.

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Adult Mouse Digit Amputation and Regeneration: A Simple Model to Investigate Mammalian Blastema Formation and Intramembranous Ossification

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Published on: July 12, 2019

Area of Science:

Developmental Biology
Regenerative Medicine
Comparative Biology

Background:

Tissue regeneration, including limb regrowth, is observed across diverse species, with varying regenerative capacities.
Limb regeneration initiates with blastema formation, historically attributed to dedifferentiation of pluripotent cells.
Alternative theories involve transdifferentiation and tissue-specific stem cells contributing to regeneration.

Purpose of the Study:

To investigate the cellular mechanisms underlying limb regeneration.
To clarify the role of different cell types in blastema formation.
To determine if specific stem cell populations are conserved across species for regeneration.

Main Methods:

Review of existing literature on limb regeneration.
Analysis of recent studies employing advanced cellular and molecular techniques.
Comparative analysis of regenerative processes in different animal models.

Main Results:

Evidence suggests tissue-resident stem cells play a crucial role in limb regeneration.
These stem cells appear to be an evolutionarily conserved mechanism for regeneration.
The contribution of dedifferentiation and transdifferentiation is being re-evaluated in light of stem cell findings.

Conclusions:

Tissue-resident stem cells are a conserved mechanism for limb regeneration across species.
This finding challenges previous theories solely based on dedifferentiation.
Understanding these stem cells opens new avenues for regenerative medicine.