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Transcriptional profiling in facioscapulohumeral muscular dystrophy to identify candidate biomarkers

ABSTRACT: Facioscapulohumeral muscular dystrophy (FSHD) is a progressive neuromuscular disorder caused by contractions of repetitive elements within the macrosatellite D4Z4 on chromosome 4q35. In order to develop mRNA-based biomarkers of affected muscles, we used GeneChip Gene 1.0 ST arrays for global analysis of gene expression in muscle biopsy specimens obtained from FSHD subjects and their unaffected first degree relatives. FSHD typically affects biceps muscles more severely than deltoid muscles. To examine muscle-specific expression changes associated with FSHD while controlling for background genetic variation, we analyzed RNA extracted from both biceps and deltoids of FSHD subjects and unaffected first-degree relatives.

ORGANISM(S): Homo sapiens

SUBMITTER: Fedik Rahimov

PROVIDER: E-GEOD-36398 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Transcriptional profiling in facioscapulohumeral muscular dystrophy to identify candidate biomarkers.

Rahimov Fedik F King Oliver D OD Leung Doris G DG Bibat Genila M GM Emerson Charles P CP Kunkel Louis M LM Wagner Kathryn R KR

Proceedings of the National Academy of Sciences of the United States of America 20120917 40

Facioscapulohumeral muscular dystrophy (FSHD) is a progressive neuromuscular disorder caused by contractions of repetitive elements within the macrosatellite D4Z4 on chromosome 4q35. The pathophysiology of FSHD is unknown and, as a result, there is currently no effective treatment available for this disease. To better understand the pathophysiology of FSHD and develop mRNA-based biomarkers of affected muscles, we compared global analysis of gene expression in two distinct muscles obtained from a ...[more]

PMID: 22988124

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Transcriptional profiling in facioscapulohumeral muscular dystrophy to identify candidate biomarkers

Project description:Facioscapulohumeral muscular dystrophy (FSHD) is a progressive neuromuscular disorder caused by contractions of repetitive elements within the macrosatellite D4Z4 on chromosome 4q35. In order to develop mRNA-based biomarkers of affected muscles, we used GeneChip Gene 1.0 ST arrays for global analysis of gene expression in muscle biopsy specimens obtained from FSHD subjects and their unaffected first degree relatives.

2012-09-19 | GSE36398 | GEO

Rbfox1 downregulation and altered Calpain 3 splicing by FRG1 in a mouse model of facioscapulohumeral muscular dystrophy (FSHD).

Project description:FRG1 over-expression results in an FSHD-like phenotype in mice. Muscles (vastus lateralis and biceps brachii) from wild type and FRG1 over-expressing mice were compared at 4 and 13 weeks of age by splicing sensitive microarray. Comparisons at 4 different time points/muscles were performed between groups of 3 each FRG1 and WT mice.

2012-12-01 | E-GEOD-32073 | biostudies-arrayexpress

Rbfox1 downregulation and altered Calpain 3 splicing by FRG1 in a mouse model of facioscapulohumeral muscular dystrophy (FSHD).

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Project description:Muscle biopsies from biceps and deltoid were taken from 5 patients with FSHD, 5 asymptomatic carriers and 5 normal controls. The genome-wide expression patterns were compared using Affymetrix U133 Plus 2.0 chips. Keywords: Facioscapulohumeral, FSHD, muscular dystrophy Gene expression profiles were generated for 15 individuals (5 affected patients, 5 asymptomatic carriers and 5 healthy controls)

2009-03-04 | E-GEOD-15090 | biostudies-arrayexpress

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Gene expression analysis of FSHD muscle with different MRI pattern

Project description:Objective: to focus on the molecular mechanisms involved in the dystrophic process that leads to selective wasting of single muscles or muscle groups in Facioscapulohumeral muscular dystrophy (FSHD). By muscle MRI we observed that T2-short tau inversion recovery (T2-STIR) sequences identify two different patterns in which each muscle can be found before the irreversible dystrophic alteration, marked as T1-weighted sequence hyperintensity. We studied these conditions in order to obtain further information on the disease pathogenesis. Design: histopathology, gene expression profiling and real time PCR were performed on muscle biopsies. Subjects: muscles (n=8) with different MRI pattern (T1-weighted normal/T2-STIR normal and T1-weighted normal/T2-STIR hyperintense) from FSHD patients. Data were also compared with inflammatory myopathies (n=7), dysferlinopathies (n=4) and normal controls (n=7). Results: myopathic and inflammatory changes characterize T2-STIR hyperintense FSHD muscles, at variance with T2-STIR normal muscles. These two states can be easily distinguished from each other by their transcriptional profile. Comparison of T2-STIR hyperintense FSHD muscles with muscles of inflammatory myopathies shows peculiar changes, although many alterations are shared among these conditions. Conclusions: at the single muscle level, different stages of the disease correspond to the two MRI patterns. T2-STIR hyperintense FSHD muscles are more similar to inflammatory myopathies than to T2-STIR normal FSHD muscles or other muscular dystrophies, and share with them upregulation of genes involved in innate and adaptive immunity. Our data suggest that selective inflammation, together with perturbation in biological processes such as neoangiogenesis, lipid metabolism and adipokine production, may play a role in FSHD progression. 26 samples of human muscle muscle tissue were analysed using the Illumina beadchip technology.

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A human pluripotent stem cell model of FSHD-affected skeletal muscles

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