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In vivo Clonal Tracking of Hematopoietic Stem and Progenitor Cells Marked by Five Fluorescent Proteins using Confocal and Multiphoton Microscopy
Published on: August 6, 2014
Stem cell plasticity: a new image of the bone marrow stem cell
1Department of Hematology-Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA. Edwin.Horwitz@stjude.org
Current Opinion in Pediatrics
|January 25, 2003
Summary
Stem cell plasticity, the ability of stem cells to differentiate into unexpected cell types, remains unproven. Further research using animal models and clinical trials is essential to advance stem cell science.
Area of Science:
- Stem cell biology
- Hematopoietic stem cell research
- Cell differentiation plasticity
Background:
- The traditional view holds that tissue stem cells self-renew and differentiate only into lineages of their tissue of origin.
- Recent studies suggest significant stem cell plasticity, challenging this established paradigm.
- Hematopoietic stem cells (HSCs) have been a primary focus for investigating differentiation plasticity.
Purpose of the Study:
- To critically evaluate the evidence for stem cell plasticity, particularly in hematopoietic stem cells.
- To address the ongoing debate regarding the extent and validity of stem cell differentiation plasticity.
- To outline future research directions for advancing stem cell biology and its therapeutic applications.
Main Methods:
- Review of existing literature on stem cell differentiation and plasticity.
- Analysis of studies investigating hematopoietic stem cell behavior.
- Consideration of evidence from animal models and early clinical trials.
Main Results:
- The concept of strict stem cell plasticity has not been rigorously demonstrated to date.
- Conflicting studies exist regarding the differentiation potential of hematopoietic stem cells.
- Evidence supporting broad stem cell plasticity remains inconclusive.
Conclusions:
- Stem cell plasticity, as strictly defined, requires further robust scientific validation.
- Advancing the field necessitates well-designed animal models to resolve outstanding questions.
- Pilot clinical trials are crucial for exploring the therapeutic potential of stem cells based on validated plasticity.
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