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According to our matching algorithm, Katherine Schreiber is the likely recipient of the following grants.
| Years |
Recipients |
Code |
Title / Keywords |
Matching
score |
| 2012 — 2013 |
Schreiber, Katherine |
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. |
Altered Mtor Signaling Associated With Lmna Mutations. @ Buck Institute For Research On Aging
DESCRIPTION (provided by applicant): A component of the nuclear substructure, A-type lamins (encoded by LMNA), are targets for mutation in a range of diseases termed laminopathies. The most commonly occurring affect skeletal muscle and cardiac function, with LMNA mutations resulting in muscular dystrophy (EDMD2/3 and LGMD1B) and dilated cardiomyopathy with conduction defects (CMD1A). The molecular mechanisms causing pathology in these diseases are poorly understood. In preliminary studies, we find that tissues from mice lacking A-type lamins exhibit elevated mTOR signaling that contributes to pathology. The fundamental goals of this proposal are to determine the mechanistic links between altered A-type lamin function, elevated mTOR activation and cardiac disease. The central hypothesis is that A-type lamin's function at the nuclear periphery is important for controlling signal transduction pathways that in turn impact mTOR activation. Aim 1 is devoted to connecting signaling pathways leading from reduced lamin A/C expression to enhanced mTOR signaling, focusing on MAP kinase activation as a potential link. In the second Aim, I describe experimental approaches to determine the consequences of aberrantly elevated mTOR signaling in cardiac and skeletal muscle tissue, focusing on a novel microRNA (miRNA) pathway that we have identified. Lastly, the efficacy of rapamycin in two other mouse models that more closely resemble human pathology will be examined. PUBLIC HEALTH RELEVANCE: LMNA mutations result in over 13 different syndromes, termed laminopathies, resulting in disease phenotypes ranging from muscular dystrophy to accelerated aging, of which there are no effective therapies. The molecular events underlying pathology remain poorly understood and this proposal will derive a molecular understanding of disease progression in mouse models resembling human laminopathies. Importantly, our findings have the potential to extend beyond diseases caused by LMNA mutations to cardiac and possibly skeletal muscle diseases themselves.
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0.903 |