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High-probability grants
According to our matching algorithm, Mark A. Parker is the likely recipient of the following grants.
Years |
Recipients |
Code |
Title / Keywords |
Matching score |
2001 — 2002 |
Parker, Mark A |
F31Activity Code Description: To provide predoctoral individuals with supervised research training in specified health and health-related areas leading toward the research degree (e.g., Ph.D.). |
Cell-Cell Interactions in Early Taste Bud Development
DESCRIPTION (provided by applicant): The lining of the mouth and pharynx of vertebrates contains clusters of chemoreceptive cells, called taste buds. Taste buds differentiate directly from the epithelium that lines the oro-pharyngeal cavity. In amphibians, the oro-pharyngeal epithelium develops from the anterior endoderm of the embryo. Cultures of the anterior endoderm produce taste buds without influence from other embryonic tissues. Because these cultures produce a mixture of both taste buds and epithelium, this implies that decisions are made within this tissue which result in some cells becoming taste buds while others become epithelial cells. I propose to examine the role of cell-cell interactions in the specification of taste bud precursor cells (Aim 1). Preliminary experiments have shown that disruption of normal cell contacts during a critical stage of development causes an increase in the number of taste buds produced by the anterior endoderm. The increase in taste bud number observed upon disruption of cell contacts is reminiscent of the effects seen upon disruption of Notch/Delta mediated lateral inhibition. I will determine whether genes involved in the Notch signaling pathway are present in the anterior endoderm during the critical period for cell contacts (Aim 2). Finally, if members of the Notch signaling pathway are present in the anterior endoderm during the critical period I plan to investigate what role they may play in specifying taste bud precursor cells (Aim 3).
|
1 |
2003 — 2005 |
Parker, Mark A |
F32Activity Code Description: To provide postdoctoral research training to individuals to broaden their scientific background and extend their potential for research in specified health-related areas. |
Therapeutic Effects of Stem Cells On Hearing Loss @ Children's Hospital Boston |
0.903 |
2009 — 2011 |
Parker, Mark A |
R03Activity Code Description: To provide research support specifically limited in time and amount for studies in categorical program areas. Small grants provide flexibility for initiating studies which are generally for preliminary short-term projects and are non-renewable. |
Targeted Expression of Atoh1 in Cochlear Supporting Cells @ Genesys Research Institute, Inc.
DESCRIPTION (provided by applicant): This research involves the biological approach to the treatment of hearing loss. It is designed to investigate the mechanisms involved in mammalian hair cell regeneration. The proposed experiments build upon the observation that global expression of the Atoh1 gene in cochlear cells is sufficient for hair cell genesis. This proposal will test the hypothesis that specific populations of cochlear supporting cells are able to differentiate into hair cells. To accomplish this, Atoh1 will be expressed 1) in a dose-dependent manner, and 2) specifically in the cochlear supporting cells that reside directly beneath the hair cells. The basic experimental protocol will be as follows. Cultured murine organs of Corti will be electroporated with an inducible form of Atoh1. Atoh1 expression will be limited to the supporting cells directly beneath the hair cells because it will be placed under the regulatory control of the GFAP promoter (selectively expressed in the inner phalangeal, inner border, pillar and Dieters'cells) and GLAST promoter (inner border and inner phalangeal cell). Next, hair cells will be killed and then Atoh1 will be upregulated in these specific supporting cells. The ability for these specific supporting cell types to develop into hair cells will be observed using time lapse video microscopy, electron microscopy, and immunohistochemical expression of hair cell specific markers such as myosin 7a. Relevance: The long-term goal of this research is to treat hearing loss with more effective therapies than provided by hearing aids or cochlear implants. Specifically, this research is designed to investigate the basic mechanisms by which the auditory sensory cells, or hair cells, can regenerate in mammals. The overall hypothesis is that replacement of lost hair cells will result in a superior therapy for the treatment of hearing loss.
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0.91 |