Neighborly care keeps stem cells young

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An immunofluorescence image of the tip of the Drosophila testis showing male germline stem cells and their daughters (green) responding to self renewal signals from the stem cell niche. Somatic stem cells known as cyst progenitor cells and differenti ...
An immunofluorescence image of the tip of the Drosophila testis, showing male germline stem cells and their daughters (green) responding to self renewal signals from the stem cell niche. Somatic stem cells, known as cyst progenitor cells, and differentiating cyst cells are labeled in red. Credit: Dr. Monica Boyle

A stem cells’ immediate neighborhood, a specialized environment also known as the stem cell niche, provides crucial support needed for stem cell maintenance. But nothing lasts forever, found scientists at the Salk Institute for Biological Studies. During the aging process, the level of support drops off, diminishing the stem cells’ ability to replenish themselves (self-renew) indefinitely.


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All News summaries for October 10, 2007

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