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© Research
Publication : Current opinion in cell biology

Stem cell identity and template DNA strand segregation

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Current opinion in cell biology - 25 Nov 2008

Tajbakhsh S

Link to Pubmed [PMID] – 18996191

Curr. Opin. Cell Biol. 2008 Dec;20(6):716-22

The quest for stem cell properties to distinguish their identity from that of committed daughters has led to a re-investigation of the notion that DNA strands are not equivalent, and ‘immortal’ DNA strands are retained in stem cells whereas newly replicated DNA strands segregate to the differentiating daughter cell during mitosis. Whether this process occurs only in stem cells, and also in all tissues, remains unclear. That individual chromosomes can be also partitioned non-randomly raises the question if this phenomenon is related to the immortal DNA hypothesis, and it underscores the need for high-resolution techniques to observe these events empirically. Although initially postulated as a mechanism to avoid DNA replication errors, alternative views including epigenetic regulation and sister chromatid silencing may provide insights into this process.

http://www.ncbi.nlm.nih.gov/pubmed/18996191