Tag Archive for 'Transcription factor'

MyoD Helps Stem Cells Proliferate in Response to Muscle Injury

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Stem Man
on 16 December 2011
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The master regulator of muscle differentiation, MyoD, functions early in myogenesis to help stem cells proliferate in response to muscle injury, according to researchers at Case Western Reserve University.
The study appears online Jan. 4 in the Journal of Cell Biology.

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Dentistry Of Future? Gene Responsible For Formation Of Enamel Discovered

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Stem Man
on 26 February 2009
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Seal of the University of Zurich
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A team of researchers lead by Dr Thimios Mitsiadis at the University of Zurich, Switzerland, has identified a gene responsible for the formation of enamel, which is the key component of the teeth. The experiments were accomplished in mice carrying a deletion of the transcription factor Tbx1, a gene that plays a principal role in several human malformations (heart, thymus, parathyroid, face, and teeth) associated to the DiGeorge syndrome.

“Subjects afflicted by DiGeorge syndrome exhibit teeth with enamel defects. We have demonstrated that a direct link between impaired Tbx1 function and enamel defects exists. Enamel forms via the mineralization of specific enamel proteins that are secreted by dental epithelial cells called ameloblasts. Our results clearly show that teeth of Tbx1 null mice lacked enamel and ameloblasts,” explains Prof Mitsiadis.

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