A Counter Gradient of Activin A and Follistatin Instructs the Timing of Hair Cell Differentiation in the Murine Cochlea

    May 2019
    Meenakshi Prajapati-DiNubila, Ana Benito-Gonzalez, Erin Golden, Shuran Zhang, Angelika Doetzlhofer
    Image of study
    TLDR Activin A and follistatin control when ear hair cells form in mice.
    In 2019, researchers investigated the role of Activin A and its antagonist, follistatin (FST), in hair cell differentiation in the murine cochlea. They discovered that Activin A and follistatin are key regulators of this process. Activin A was found to promote hair cell differentiation, with its signaling within the auditory sensory epithelium timing the longitudinal gradient of hair cell differentiation. Follistatin, on the other hand, maintained pro-sensory cells in a proliferative and undifferentiated state, and its overexpression delayed hair cell differentiation. However, this delay was almost completely abolished when combined with Activin A treatment. The study also revealed a novel mechanism where Activin-type signaling regulates a radial gradient of terminal mitosis within the auditory sensory epithelium, limiting the number of inner hair cells produced. The researchers concluded that a counter gradient of Activin A and follistatin instructs the timing of hair cell differentiation in the cochlea.
    Discuss this study in the Community →

    Related Community Posts Join

    1 / 1 results

      community How do people afford finasteride/dutasteride?

      in Treatment  27 upvotes 10 months ago
      People discuss the high cost of brand name finasteride and dutasteride, suggesting generics as cheaper alternatives. They share prices from various regions, highlighting significant cost differences.

    Similar Research

    5 / 514 results