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Regeneration of injured muscle from adult stem cells

Scientists have identified a key gene, Pax7, that regulates the transformation of adult stem cells into muscle cells in injured tissue. The study showed that introducing Pax7 to these stem cells can enable them to differentiate into functional muscle cells and aid in tissue repair.

SourcePLOS·JournalPLOS Biology·DateMay 11, 2004

Crowding stem cells' personal space directs their future

Researchers at Johns Hopkins Medicine found that mesenchymal stem cell shape is a critical factor in determining which type of cell they will become. By using micropatterning technology, the team showed that spherical stem cells efficiently transform into fat cell precursors, while those allowed to stretch and flatten move closer to be...

SourceJohns Hopkins Medicine·JournalDevelopmental Cell·DateApr 16, 2004

Embryonic skin cells committed at an early age

Researchers found that embryonic keratinocytes differentiate into skin cells much sooner than cells after birth. The study suggests a higher commitment to differentiation in embryonic skin cells, which may apply to other epithelial tissues.

SourceCell Press·JournalDevelopmental Cell·DateApr 12, 2004

Stem cells appear not to turn into heart cells

Research suggests that bone-marrow-derived stem cells do not differentiate into new heart muscle cells when injected into damaged hearts. Instead, they mature into traditional blood lineage cells. This challenges the idea of using stem cell therapy to repair damaged hearts and raises questions about alternative approaches.

SourceIndiana University·JournalNature·DateMar 21, 2004

Tissue cells can revert to stem cells

Researchers have discovered that tissue cells in clusters of 4 and 8 can revert to a stem-cell state under specific conditions, working just as well as normal stem cells. This finding could provide a new approach for harnessing differentiated cells to enhance tissue repair, similar to animals that can regenerate lost parts.

Profiling the genes that make stem cells

A team of scientists has identified a cluster of 88 genes that may act as molecular markers for the developmental potential of different stem cell types and stages. These findings are consistent with previous research on cellular development and plasticity, and shed light on the molecular pathways guiding development.

SourcePLOS·JournalPLOS Biology·DateDec 22, 2003

Chemical turns stem cells into neurons say scientists at Scripps Research Institute

Researchers have identified small chemical molecules that can direct embryonic stem cells to become neurons, paving the way for potential treatments of neurodegenerative diseases like Parkinson's and Type 1 diabetes. The study provides important insights into the molecular mechanism controlling stem cell fate and may lead to new therap...

SourceScripps Research Institute·JournalProceedings of the National Academy of Sciences·DateJun 2, 2003

Integrins and signaling in psoriasis

Researchers investigate integrin signaling in psoriasis, discovering altered expression of key proteins involved in immune responses. This study sheds light on potential therapeutic targets for treatment of the chronic skin condition.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateAug 15, 2001

Driving differentiation of human embryonic stem cells

Researchers at Howard Hughes Medical Institute successfully directed human embryonic stem cells to differentiate into three germ layers: ectodermal (brain, skin), mesodermal (muscle) and endodermal (liver and pancreas). The study suggests that a combination of growth factors may be needed to achieve specific cell lineages.

SourceHoward Hughes Medical Institute·JournalProceedings of the National Academy of Sciences·DateOct 9, 2000