Hair Cell Regeneration Research

Discussion in 'Your Living Room' started by John of Ohio, Jun 20, 2014.

  1. John of Ohio

    John of Ohio Active Member

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    May 17, 2014
    A journal article has just appeared, where it it claimed that hair cells might be restored from auditory stem cells:

    Abstract
    The spiral ganglion is an essential functional component of the peripheral auditory system. Most types of hearing
    loss are associated with spiral ganglion cell degeneration which is irreversible due to the inner ear’s lack of regenerative
    capacity. Recent studies revealed the existence of stem cells in the postnatal spiral ganglion, which
    gives rise to the hope that these cells might be useful for regenerative inner ear therapies. Here, we provide
    an in-depth analysis of sphere-forming stem cells isolated from the spiral ganglion of postnatal mice. We
    show that spiral ganglion spheres have characteristics similar to neurospheres isolated from the brain. Importantly,
    spiral ganglion sphere cells maintain their major stem cell characteristics after repeated propagation,
    which enables the culture of spheres for an extended period of time. In this work, we also demonstrate that differentiated
    sphere-derived cell populations not only adopt the immunophenotype of mature spiral ganglion cells
    but also develop distinct ultrastructural features of neurons and glial cells. Thus, our work provides further evidence
    that self-renewing spiral ganglion stem cells might serve as a promising source for the regeneration of lost
    auditory neurons.


    http://online.liebertpub.com/doi/pdf/10.1089/biores.2014.0016


    Of course, any of this with restorative clinical application is in the distant future. Hope, nonetheless.

    --John of Ohio
     

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