PROJECT 1 The Genetic and Epigenetic Basis for FSIHD We have demonstrated that FSHD is caused by a contraction-cfepencfenf (FSHD1) or contractionindependent (FSHD2) change in chromatin structure of D4Z4 only when this contraction occurs on a specific genetic background (4qA161). This leads to the hypothesis that a change in D4Z4 chromatin structure on the 4qA161 haplotype is essential for FSHD pathology. Therefore, the long-term goal is to identify the specific DNA sequences and the epigenetic modifications that together confer pathogenicity to 4qA161.
Aim 1 will identify and functionally characterize the disease haplotype-specific sequence variants of the distal repeat unit and flanking pLAM sequence. Recent studies identified this part of the FSHD locus as the minimal essential region;
Aim 2 will identify and functionally characterize the chromatin structure of this minimal essential region test the hypothesis that the D4Z4 repeats regulate DUX4 expression and have a biological role in early embryonic development;
and Aim 3 will determine the genetic and epigenetic characteristics of D4Z4 in human ES cells to establish the developmental role of D4Z4 in relation to the clinical features of FSHD.

Public Health Relevance

The significance of these studies is that identifying the genetic and epigenetic conditions required for FSHD will provide fundamental insight into the pathophysiology of FSHD as well as providing new avenues for interventional therapies.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Research Program Projects (P01)
Project #
5P01NS069539-05
Application #
8634145
Study Section
National Institute of Neurological Disorders and Stroke Initial Review Group (NSD)
Project Start
Project End
Budget Start
2014-04-01
Budget End
2015-03-31
Support Year
5
Fiscal Year
2014
Total Cost
Indirect Cost
Name
Fred Hutchinson Cancer Research Center
Department
Type
DUNS #
City
Seattle
State
WA
Country
United States
Zip Code
98109
Hendrickson, Peter G; Doráis, Jessie A; Grow, Edward J et al. (2017) Conserved roles of mouse DUX and human DUX4 in activating cleavage-stage genes and MERVL/HERVL retrotransposons. Nat Genet 49:925-934
Campbell, Amy E; Oliva, Jonathan; Yates, Matthew P et al. (2017) BET bromodomain inhibitors and agonists of the beta-2 adrenergic receptor identified in screens for compounds that inhibit DUX4 expression in FSHD muscle cells. Skelet Muscle 7:16
Jagannathan, Sujatha; Bradley, Robert K (2017) Congenital myotonic dystrophy-an RNA-mediated disease across a developmental continuum. Genes Dev 31:1067-1068
Feng, Qing; Jagannathan, Sujatha; Bradley, Robert K (2017) The RNA Surveillance Factor UPF1 Represses Myogenesis via Its E3 Ubiquitin Ligase Activity. Mol Cell 67:239-251.e6
Lemmers, Richard Jlf; van der Vliet, Patrick J; Balog, Judit et al. (2017) Deep characterization of a common D4Z4 variant identifies biallelic DUX4 expression as a modifier for disease penetrance in FSHD2. Eur J Hum Genet :
Shadle, Sean C; Zhong, Jun Wen; Campbell, Amy E et al. (2017) DUX4-induced dsRNA and MYC mRNA stabilization activate apoptotic pathways in human cell models of facioscapulohumeral dystrophy. PLoS Genet 13:e1006658
Mason, Amanda G; Slieker, Roderick C; Balog, Judit et al. (2017) SMCHD1 regulates a limited set of gene clusters on autosomal chromosomes. Skelet Muscle 7:12
van den Boogaard, Marlinde L; Lemmers, Richard J F L; Camaño, Pilar et al. (2016) Double SMCHD1 variants in FSHD2: the synergistic effect of two SMCHD1 variants on D4Z4 hypomethylation and disease penetrance in FSHD2. Eur J Hum Genet 24:78-85
Mul, Karlien; van den Boogaard, Marlinde L; van der Maarel, Silvère M et al. (2016) Integrating clinical and genetic observations in facioscapulohumeral muscular dystrophy. Curr Opin Neurol 29:606-13
Knopp, Paul; Krom, Yvonne D; Banerji, Christopher R S et al. (2016) DUX4 induces a transcriptome more characteristic of a less-differentiated cell state and inhibits myogenesis. J Cell Sci 129:3816-3831

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